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Commit | Line | Data |
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ac7eb8a3 | 1 | /* |
ff94bc40 | 2 | * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al. |
932394ac | 3 | * |
78e9e71c | 4 | * SPDX-License-Identifier: GPL-2.0+ |
ff94bc40 | 5 | * |
932394ac WD |
6 | */ |
7 | ||
8 | #ifndef __MTD_MTD_H__ | |
9 | #define __MTD_MTD_H__ | |
cfa460ad | 10 | |
ff94bc40 | 11 | #ifndef __UBOOT__ |
932394ac | 12 | #include <linux/types.h> |
ff94bc40 HS |
13 | #include <linux/uio.h> |
14 | #include <linux/notifier.h> | |
15 | #include <linux/device.h> | |
16 | ||
17 | #include <mtd/mtd-abi.h> | |
18 | ||
19 | #include <asm/div64.h> | |
20 | #else | |
21 | #include <linux/compat.h> | |
dfe64e2c | 22 | #include <mtd/mtd-abi.h> |
1221ce45 | 23 | #include <linux/errno.h> |
ff94bc40 | 24 | #include <div64.h> |
932394ac | 25 | |
cfa460ad | 26 | #define MAX_MTD_DEVICES 32 |
ff94bc40 | 27 | #endif |
932394ac | 28 | |
53677ef1 | 29 | #define MTD_ERASE_PENDING 0x01 |
932394ac WD |
30 | #define MTD_ERASING 0x02 |
31 | #define MTD_ERASE_SUSPEND 0x04 | |
ff94bc40 HS |
32 | #define MTD_ERASE_DONE 0x08 |
33 | #define MTD_ERASE_FAILED 0x10 | |
932394ac | 34 | |
ff94bc40 | 35 | #define MTD_FAIL_ADDR_UNKNOWN -1LL |
8d2effea | 36 | |
d438d508 | 37 | /* |
ff94bc40 HS |
38 | * If the erase fails, fail_addr might indicate exactly which block failed. If |
39 | * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level | |
40 | * or was not specific to any particular block. | |
d438d508 | 41 | */ |
932394ac WD |
42 | struct erase_info { |
43 | struct mtd_info *mtd; | |
8d2effea SR |
44 | uint64_t addr; |
45 | uint64_t len; | |
46 | uint64_t fail_addr; | |
932394ac WD |
47 | u_long time; |
48 | u_long retries; | |
ff94bc40 HS |
49 | unsigned dev; |
50 | unsigned cell; | |
932394ac WD |
51 | void (*callback) (struct erase_info *self); |
52 | u_long priv; | |
53 | u_char state; | |
54 | struct erase_info *next; | |
6d41419f | 55 | int scrub; |
932394ac WD |
56 | }; |
57 | ||
58 | struct mtd_erase_region_info { | |
ff94bc40 HS |
59 | uint64_t offset; /* At which this region starts, from the beginning of the MTD */ |
60 | uint32_t erasesize; /* For this region */ | |
61 | uint32_t numblocks; /* Number of blocks of erasesize in this region */ | |
cfa460ad WJ |
62 | unsigned long *lockmap; /* If keeping bitmap of locks */ |
63 | }; | |
64 | ||
cfa460ad WJ |
65 | /** |
66 | * struct mtd_oob_ops - oob operation operands | |
67 | * @mode: operation mode | |
68 | * | |
69 | * @len: number of data bytes to write/read | |
70 | * | |
71 | * @retlen: number of data bytes written/read | |
72 | * | |
73 | * @ooblen: number of oob bytes to write/read | |
74 | * @oobretlen: number of oob bytes written/read | |
75 | * @ooboffs: offset of oob data in the oob area (only relevant when | |
dfe64e2c | 76 | * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW) |
cfa460ad WJ |
77 | * @datbuf: data buffer - if NULL only oob data are read/written |
78 | * @oobbuf: oob data buffer | |
79 | * | |
ff94bc40 | 80 | * Note, it is allowed to read more than one OOB area at one go, but not write. |
cfa460ad WJ |
81 | * The interface assumes that the OOB write requests program only one page's |
82 | * OOB area. | |
83 | */ | |
84 | struct mtd_oob_ops { | |
dfe64e2c | 85 | unsigned int mode; |
cfa460ad WJ |
86 | size_t len; |
87 | size_t retlen; | |
88 | size_t ooblen; | |
89 | size_t oobretlen; | |
90 | uint32_t ooboffs; | |
91 | uint8_t *datbuf; | |
92 | uint8_t *oobbuf; | |
932394ac WD |
93 | }; |
94 | ||
68ec9c85 PK |
95 | #ifdef CONFIG_SYS_NAND_MAX_OOBFREE |
96 | #define MTD_MAX_OOBFREE_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_OOBFREE | |
97 | #else | |
98 | #define MTD_MAX_OOBFREE_ENTRIES_LARGE 32 | |
99 | #endif | |
100 | ||
101 | #ifdef CONFIG_SYS_NAND_MAX_ECCPOS | |
102 | #define MTD_MAX_ECCPOS_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_ECCPOS | |
103 | #else | |
2580a2a7 | 104 | #define MTD_MAX_ECCPOS_ENTRIES_LARGE 680 |
68ec9c85 | 105 | #endif |
13f3b04f BB |
106 | /** |
107 | * struct mtd_oob_region - oob region definition | |
108 | * @offset: region offset | |
109 | * @length: region length | |
110 | * | |
111 | * This structure describes a region of the OOB area, and is used | |
112 | * to retrieve ECC or free bytes sections. | |
113 | * Each section is defined by an offset within the OOB area and a | |
114 | * length. | |
115 | */ | |
116 | struct mtd_oob_region { | |
117 | u32 offset; | |
118 | u32 length; | |
119 | }; | |
120 | ||
121 | /* | |
122 | * struct mtd_ooblayout_ops - NAND OOB layout operations | |
123 | * @ecc: function returning an ECC region in the OOB area. | |
124 | * Should return -ERANGE if %section exceeds the total number of | |
125 | * ECC sections. | |
126 | * @free: function returning a free region in the OOB area. | |
127 | * Should return -ERANGE if %section exceeds the total number of | |
128 | * free sections. | |
129 | */ | |
130 | struct mtd_ooblayout_ops { | |
131 | int (*ecc)(struct mtd_info *mtd, int section, | |
132 | struct mtd_oob_region *oobecc); | |
133 | int (*free)(struct mtd_info *mtd, int section, | |
134 | struct mtd_oob_region *oobfree); | |
135 | }; | |
68ec9c85 PK |
136 | |
137 | /* | |
ff94bc40 HS |
138 | * Internal ECC layout control structure. For historical reasons, there is a |
139 | * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained | |
140 | * for export to user-space via the ECCGETLAYOUT ioctl. | |
141 | * nand_ecclayout should be expandable in the future simply by the above macros. | |
68ec9c85 PK |
142 | */ |
143 | struct nand_ecclayout { | |
ff94bc40 HS |
144 | __u32 eccbytes; |
145 | __u32 eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE]; | |
146 | __u32 oobavail; | |
68ec9c85 PK |
147 | struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE]; |
148 | }; | |
149 | ||
ff94bc40 HS |
150 | struct module; /* only needed for owner field in mtd_info */ |
151 | ||
932394ac WD |
152 | struct mtd_info { |
153 | u_char type; | |
ff94bc40 HS |
154 | uint32_t flags; |
155 | uint64_t size; // Total size of the MTD | |
932394ac | 156 | |
fa82f871 | 157 | /* "Major" erase size for the device. Naïve users may take this |
932394ac WD |
158 | * to be the only erase size available, or may use the more detailed |
159 | * information below if they desire | |
160 | */ | |
ff94bc40 | 161 | uint32_t erasesize; |
cfa460ad WJ |
162 | /* Minimal writable flash unit size. In case of NOR flash it is 1 (even |
163 | * though individual bits can be cleared), in case of NAND flash it is | |
164 | * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR | |
165 | * it is of ECC block size, etc. It is illegal to have writesize = 0. | |
166 | * Any driver registering a struct mtd_info must ensure a writesize of | |
167 | * 1 or larger. | |
168 | */ | |
ff94bc40 HS |
169 | uint32_t writesize; |
170 | ||
171 | /* | |
172 | * Size of the write buffer used by the MTD. MTD devices having a write | |
173 | * buffer can write multiple writesize chunks at a time. E.g. while | |
174 | * writing 4 * writesize bytes to a device with 2 * writesize bytes | |
175 | * buffer the MTD driver can (but doesn't have to) do 2 writesize | |
176 | * operations, but not 4. Currently, all NANDs have writebufsize | |
177 | * equivalent to writesize (NAND page size). Some NOR flashes do have | |
178 | * writebufsize greater than writesize. | |
179 | */ | |
180 | uint32_t writebufsize; | |
932394ac | 181 | |
ff94bc40 HS |
182 | uint32_t oobsize; // Amount of OOB data per block (e.g. 16) |
183 | uint32_t oobavail; // Available OOB bytes per block | |
184 | ||
185 | /* | |
186 | * If erasesize is a power of 2 then the shift is stored in | |
187 | * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize. | |
188 | */ | |
189 | unsigned int erasesize_shift; | |
190 | unsigned int writesize_shift; | |
191 | /* Masks based on erasesize_shift and writesize_shift */ | |
192 | unsigned int erasesize_mask; | |
193 | unsigned int writesize_mask; | |
ac7eb8a3 | 194 | |
dfe64e2c SL |
195 | /* |
196 | * read ops return -EUCLEAN if max number of bitflips corrected on any | |
197 | * one region comprising an ecc step equals or exceeds this value. | |
198 | * Settable by driver, else defaults to ecc_strength. User can override | |
199 | * in sysfs. N.B. The meaning of the -EUCLEAN return code has changed; | |
200 | * see Documentation/ABI/testing/sysfs-class-mtd for more detail. | |
201 | */ | |
202 | unsigned int bitflip_threshold; | |
203 | ||
ff94bc40 HS |
204 | // Kernel-only stuff starts here. |
205 | #ifndef __UBOOT__ | |
c45912d8 | 206 | const char *name; |
ff94bc40 HS |
207 | #else |
208 | char *name; | |
209 | #endif | |
932394ac WD |
210 | int index; |
211 | ||
13f3b04f BB |
212 | /* OOB layout description */ |
213 | const struct mtd_ooblayout_ops *ooblayout; | |
214 | ||
dfe64e2c | 215 | /* ECC layout structure pointer - read only! */ |
cfa460ad | 216 | struct nand_ecclayout *ecclayout; |
932394ac | 217 | |
ff94bc40 HS |
218 | /* the ecc step size. */ |
219 | unsigned int ecc_step_size; | |
220 | ||
dfe64e2c SL |
221 | /* max number of correctible bit errors per ecc step */ |
222 | unsigned int ecc_strength; | |
223 | ||
932394ac | 224 | /* Data for variable erase regions. If numeraseregions is zero, |
ac7eb8a3 | 225 | * it means that the whole device has erasesize as given above. |
932394ac WD |
226 | */ |
227 | int numeraseregions; | |
ac7eb8a3 | 228 | struct mtd_erase_region_info *eraseregions; |
932394ac | 229 | |
c45912d8 | 230 | /* |
dfe64e2c SL |
231 | * Do not call via these pointers, use corresponding mtd_*() |
232 | * wrappers instead. | |
c45912d8 | 233 | */ |
dfe64e2c | 234 | int (*_erase) (struct mtd_info *mtd, struct erase_info *instr); |
ff94bc40 | 235 | #ifndef __UBOOT__ |
dfe64e2c | 236 | int (*_point) (struct mtd_info *mtd, loff_t from, size_t len, |
ff94bc40 HS |
237 | size_t *retlen, void **virt, resource_size_t *phys); |
238 | int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len); | |
239 | #endif | |
240 | unsigned long (*_get_unmapped_area) (struct mtd_info *mtd, | |
241 | unsigned long len, | |
242 | unsigned long offset, | |
243 | unsigned long flags); | |
dfe64e2c | 244 | int (*_read) (struct mtd_info *mtd, loff_t from, size_t len, |
ff94bc40 | 245 | size_t *retlen, u_char *buf); |
dfe64e2c | 246 | int (*_write) (struct mtd_info *mtd, loff_t to, size_t len, |
ff94bc40 HS |
247 | size_t *retlen, const u_char *buf); |
248 | int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len, | |
249 | size_t *retlen, const u_char *buf); | |
dfe64e2c | 250 | int (*_read_oob) (struct mtd_info *mtd, loff_t from, |
ff94bc40 | 251 | struct mtd_oob_ops *ops); |
dfe64e2c | 252 | int (*_write_oob) (struct mtd_info *mtd, loff_t to, |
ff94bc40 | 253 | struct mtd_oob_ops *ops); |
4e67c571 HS |
254 | int (*_get_fact_prot_info) (struct mtd_info *mtd, size_t len, |
255 | size_t *retlen, struct otp_info *buf); | |
dfe64e2c | 256 | int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, |
ff94bc40 | 257 | size_t len, size_t *retlen, u_char *buf); |
4e67c571 HS |
258 | int (*_get_user_prot_info) (struct mtd_info *mtd, size_t len, |
259 | size_t *retlen, struct otp_info *buf); | |
dfe64e2c | 260 | int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from, |
ff94bc40 HS |
261 | size_t len, size_t *retlen, u_char *buf); |
262 | int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to, | |
263 | size_t len, size_t *retlen, u_char *buf); | |
dfe64e2c | 264 | int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, |
ff94bc40 HS |
265 | size_t len); |
266 | #ifndef __UBOOT__ | |
267 | int (*_writev) (struct mtd_info *mtd, const struct kvec *vecs, | |
268 | unsigned long count, loff_t to, size_t *retlen); | |
269 | #endif | |
dfe64e2c SL |
270 | void (*_sync) (struct mtd_info *mtd); |
271 | int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); | |
272 | int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len); | |
ff94bc40 | 273 | int (*_is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len); |
86a720aa | 274 | int (*_block_isreserved) (struct mtd_info *mtd, loff_t ofs); |
dfe64e2c SL |
275 | int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs); |
276 | int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); | |
ff94bc40 HS |
277 | #ifndef __UBOOT__ |
278 | int (*_suspend) (struct mtd_info *mtd); | |
279 | void (*_resume) (struct mtd_info *mtd); | |
0195a7bb | 280 | void (*_reboot) (struct mtd_info *mtd); |
ff94bc40 | 281 | #endif |
ac7eb8a3 | 282 | /* |
dfe64e2c SL |
283 | * If the driver is something smart, like UBI, it may need to maintain |
284 | * its own reference counting. The below functions are only for driver. | |
932394ac | 285 | */ |
dfe64e2c SL |
286 | int (*_get_device) (struct mtd_info *mtd); |
287 | void (*_put_device) (struct mtd_info *mtd); | |
cfa460ad | 288 | |
ff94bc40 HS |
289 | #ifndef __UBOOT__ |
290 | /* Backing device capabilities for this device | |
291 | * - provides mmap capabilities | |
292 | */ | |
293 | struct backing_dev_info *backing_dev_info; | |
294 | ||
cfa460ad WJ |
295 | struct notifier_block reboot_notifier; /* default mode before reboot */ |
296 | #endif | |
297 | ||
298 | /* ECC status information */ | |
299 | struct mtd_ecc_stats ecc_stats; | |
300 | /* Subpage shift (NAND) */ | |
301 | int subpage_sft; | |
302 | ||
932394ac WD |
303 | void *priv; |
304 | ||
305 | struct module *owner; | |
ff94bc40 HS |
306 | #ifndef __UBOOT__ |
307 | struct device dev; | |
d8587993 TC |
308 | #else |
309 | struct udevice *dev; | |
ff94bc40 | 310 | #endif |
932394ac WD |
311 | int usecount; |
312 | }; | |
313 | ||
13f3b04f BB |
314 | int mtd_ooblayout_ecc(struct mtd_info *mtd, int section, |
315 | struct mtd_oob_region *oobecc); | |
316 | int mtd_ooblayout_find_eccregion(struct mtd_info *mtd, int eccbyte, | |
317 | int *section, | |
318 | struct mtd_oob_region *oobregion); | |
319 | int mtd_ooblayout_get_eccbytes(struct mtd_info *mtd, u8 *eccbuf, | |
320 | const u8 *oobbuf, int start, int nbytes); | |
321 | int mtd_ooblayout_set_eccbytes(struct mtd_info *mtd, const u8 *eccbuf, | |
322 | u8 *oobbuf, int start, int nbytes); | |
323 | int mtd_ooblayout_free(struct mtd_info *mtd, int section, | |
324 | struct mtd_oob_region *oobfree); | |
325 | int mtd_ooblayout_get_databytes(struct mtd_info *mtd, u8 *databuf, | |
326 | const u8 *oobbuf, int start, int nbytes); | |
327 | int mtd_ooblayout_set_databytes(struct mtd_info *mtd, const u8 *databuf, | |
328 | u8 *oobbuf, int start, int nbytes); | |
329 | int mtd_ooblayout_count_freebytes(struct mtd_info *mtd); | |
330 | int mtd_ooblayout_count_eccbytes(struct mtd_info *mtd); | |
331 | ||
332 | static inline void mtd_set_ooblayout(struct mtd_info *mtd, | |
333 | const struct mtd_ooblayout_ops *ooblayout) | |
334 | { | |
335 | mtd->ooblayout = ooblayout; | |
336 | } | |
337 | ||
ceee07b6 SW |
338 | static inline int mtd_oobavail(struct mtd_info *mtd, struct mtd_oob_ops *ops) |
339 | { | |
340 | return ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize; | |
341 | } | |
342 | ||
dfe64e2c | 343 | int mtd_erase(struct mtd_info *mtd, struct erase_info *instr); |
ff94bc40 HS |
344 | #ifndef __UBOOT__ |
345 | int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, | |
346 | void **virt, resource_size_t *phys); | |
347 | int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len); | |
348 | #endif | |
349 | unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len, | |
350 | unsigned long offset, unsigned long flags); | |
dfe64e2c SL |
351 | int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, |
352 | u_char *buf); | |
353 | int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, | |
354 | const u_char *buf); | |
355 | int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, | |
356 | const u_char *buf); | |
357 | ||
358 | int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops); | |
359 | ||
360 | static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to, | |
361 | struct mtd_oob_ops *ops) | |
362 | { | |
363 | ops->retlen = ops->oobretlen = 0; | |
364 | if (!mtd->_write_oob) | |
365 | return -EOPNOTSUPP; | |
366 | if (!(mtd->flags & MTD_WRITEABLE)) | |
367 | return -EROFS; | |
368 | return mtd->_write_oob(mtd, to, ops); | |
369 | } | |
370 | ||
4e67c571 HS |
371 | int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen, |
372 | struct otp_info *buf); | |
dfe64e2c SL |
373 | int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, |
374 | size_t *retlen, u_char *buf); | |
4e67c571 HS |
375 | int mtd_get_user_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen, |
376 | struct otp_info *buf); | |
dfe64e2c SL |
377 | int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, |
378 | size_t *retlen, u_char *buf); | |
379 | int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len, | |
380 | size_t *retlen, u_char *buf); | |
381 | int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len); | |
382 | ||
ff94bc40 | 383 | #ifndef __UBOOT__ |
dfe64e2c SL |
384 | int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs, |
385 | unsigned long count, loff_t to, size_t *retlen); | |
386 | #endif | |
387 | ||
388 | static inline void mtd_sync(struct mtd_info *mtd) | |
389 | { | |
390 | if (mtd->_sync) | |
391 | mtd->_sync(mtd); | |
392 | } | |
393 | ||
394 | int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len); | |
395 | int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len); | |
396 | int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len); | |
86a720aa | 397 | int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs); |
dfe64e2c SL |
398 | int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs); |
399 | int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs); | |
400 | ||
ff94bc40 HS |
401 | #ifndef __UBOOT__ |
402 | static inline int mtd_suspend(struct mtd_info *mtd) | |
403 | { | |
404 | return mtd->_suspend ? mtd->_suspend(mtd) : 0; | |
405 | } | |
406 | ||
407 | static inline void mtd_resume(struct mtd_info *mtd) | |
408 | { | |
409 | if (mtd->_resume) | |
410 | mtd->_resume(mtd); | |
411 | } | |
412 | #endif | |
413 | ||
8d2effea SR |
414 | static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd) |
415 | { | |
ff94bc40 HS |
416 | if (mtd->erasesize_shift) |
417 | return sz >> mtd->erasesize_shift; | |
8d2effea SR |
418 | do_div(sz, mtd->erasesize); |
419 | return sz; | |
420 | } | |
421 | ||
422 | static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd) | |
423 | { | |
ff94bc40 HS |
424 | if (mtd->erasesize_shift) |
425 | return sz & mtd->erasesize_mask; | |
8d2effea SR |
426 | return do_div(sz, mtd->erasesize); |
427 | } | |
932394ac | 428 | |
ff94bc40 HS |
429 | static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd) |
430 | { | |
431 | if (mtd->writesize_shift) | |
432 | return sz >> mtd->writesize_shift; | |
433 | do_div(sz, mtd->writesize); | |
434 | return sz; | |
435 | } | |
436 | ||
437 | static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd) | |
438 | { | |
439 | if (mtd->writesize_shift) | |
440 | return sz & mtd->writesize_mask; | |
441 | return do_div(sz, mtd->writesize); | |
442 | } | |
443 | ||
dfe64e2c SL |
444 | static inline int mtd_has_oob(const struct mtd_info *mtd) |
445 | { | |
446 | return mtd->_read_oob && mtd->_write_oob; | |
447 | } | |
448 | ||
ff94bc40 HS |
449 | static inline int mtd_type_is_nand(const struct mtd_info *mtd) |
450 | { | |
451 | return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH; | |
452 | } | |
453 | ||
dfe64e2c SL |
454 | static inline int mtd_can_have_bb(const struct mtd_info *mtd) |
455 | { | |
456 | return !!mtd->_block_isbad; | |
457 | } | |
458 | ||
932394ac WD |
459 | /* Kernel-side ioctl definitions */ |
460 | ||
ff94bc40 HS |
461 | struct mtd_partition; |
462 | struct mtd_part_parser_data; | |
463 | ||
464 | extern int mtd_device_parse_register(struct mtd_info *mtd, | |
465 | const char * const *part_probe_types, | |
466 | struct mtd_part_parser_data *parser_data, | |
467 | const struct mtd_partition *defparts, | |
468 | int defnr_parts); | |
469 | #define mtd_device_register(master, parts, nr_parts) \ | |
470 | mtd_device_parse_register(master, NULL, NULL, parts, nr_parts) | |
471 | extern int mtd_device_unregister(struct mtd_info *master); | |
932394ac | 472 | extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num); |
ff94bc40 HS |
473 | extern int __get_mtd_device(struct mtd_info *mtd); |
474 | extern void __put_mtd_device(struct mtd_info *mtd); | |
cfa460ad | 475 | extern struct mtd_info *get_mtd_device_nm(const char *name); |
932394ac | 476 | extern void put_mtd_device(struct mtd_info *mtd); |
ff94bc40 HS |
477 | |
478 | ||
479 | #ifndef __UBOOT__ | |
932394ac WD |
480 | struct mtd_notifier { |
481 | void (*add)(struct mtd_info *mtd); | |
482 | void (*remove)(struct mtd_info *mtd); | |
483 | struct list_head list; | |
484 | }; | |
485 | ||
ff94bc40 | 486 | |
932394ac WD |
487 | extern void register_mtd_user (struct mtd_notifier *new); |
488 | extern int unregister_mtd_user (struct mtd_notifier *old); | |
932394ac | 489 | #endif |
ff94bc40 | 490 | void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size); |
932394ac | 491 | |
932394ac WD |
492 | #ifdef CONFIG_MTD_PARTITIONS |
493 | void mtd_erase_callback(struct erase_info *instr); | |
494 | #else | |
495 | static inline void mtd_erase_callback(struct erase_info *instr) | |
496 | { | |
497 | if (instr->callback) | |
498 | instr->callback(instr); | |
499 | } | |
500 | #endif | |
501 | ||
dfe64e2c SL |
502 | static inline int mtd_is_bitflip(int err) { |
503 | return err == -EUCLEAN; | |
504 | } | |
505 | ||
506 | static inline int mtd_is_eccerr(int err) { | |
507 | return err == -EBADMSG; | |
508 | } | |
509 | ||
510 | static inline int mtd_is_bitflip_or_eccerr(int err) { | |
511 | return mtd_is_bitflip(err) || mtd_is_eccerr(err); | |
512 | } | |
932394ac | 513 | |
0195a7bb HS |
514 | unsigned mtd_mmap_capabilities(struct mtd_info *mtd); |
515 | ||
ff94bc40 HS |
516 | #ifdef __UBOOT__ |
517 | /* drivers/mtd/mtdcore.h */ | |
518 | int add_mtd_device(struct mtd_info *mtd); | |
ddf7bcfa | 519 | int del_mtd_device(struct mtd_info *mtd); |
ff94bc40 HS |
520 | int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int); |
521 | int del_mtd_partitions(struct mtd_info *); | |
09c32807 HS |
522 | |
523 | int mtd_arg_off(const char *arg, int *idx, loff_t *off, loff_t *size, | |
f18d1116 | 524 | loff_t *maxsize, int devtype, uint64_t chipsize); |
09c32807 | 525 | int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off, |
f18d1116 MY |
526 | loff_t *size, loff_t *maxsize, int devtype, |
527 | uint64_t chipsize); | |
59441ac3 SR |
528 | |
529 | /* drivers/mtd/mtdcore.c */ | |
530 | void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset, | |
531 | const uint64_t length, uint64_t *len_incl_bad, | |
532 | int *truncated); | |
ff94bc40 | 533 | #endif |
932394ac | 534 | #endif /* __MTD_MTD_H__ */ |