35 	struct mtd_info *mtd;  member
42 	return fixed_size_llseek(file, offset, orig, mfi->mtd->size);  in mtdchar_lseek()
50 	struct mtd_info *mtd;  in mtdchar_open()  local
59 	mtd = get_mtd_device(NULL, devnum);  in mtdchar_open()
61 	if (IS_ERR(mtd))  in mtdchar_open()
62 		return PTR_ERR(mtd);  in mtdchar_open()
64 	if (mtd->type == MTD_ABSENT) {  in mtdchar_open()
70 	if ((file->f_mode & FMODE_WRITE) && !(mtd->flags & MTD_WRITEABLE)) {  in mtdchar_open()
80 	mfi->mtd = mtd;  in mtdchar_open()
85 	put_mtd_device(mtd);  in mtdchar_open()
94 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_close()  local
100 		mtd_sync(mtd);  in mtdchar_close()
102 	put_mtd_device(mtd);  in mtdchar_close()
131 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_read()  local
141 	if (*ppos + count > mtd->size) {  in mtdchar_read()
142 		if (*ppos < mtd->size)  in mtdchar_read()
143 			count = mtd->size - *ppos;  in mtdchar_read()
151 	kbuf = mtd_kmalloc_up_to(mtd, &size);  in mtdchar_read()
160 			ret = mtd_read_fact_prot_reg(mtd, *ppos, len,  in mtdchar_read()
164 			ret = mtd_read_user_prot_reg(mtd, *ppos, len,  in mtdchar_read()
176 			ret = mtd_read_oob(mtd, *ppos, &ops);  in mtdchar_read()
181 			ret = mtd_read(mtd, *ppos, len, &retlen, kbuf);  in mtdchar_read()
221 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_write()  local
231 	if (*ppos >= mtd->size)  in mtdchar_write()
234 	if (*ppos + count > mtd->size)  in mtdchar_write()
235 		count = mtd->size - *ppos;  in mtdchar_write()
240 	kbuf = mtd_kmalloc_up_to(mtd, &size);  in mtdchar_write()
257 			ret = mtd_write_user_prot_reg(mtd, *ppos, len,  in mtdchar_write()
271 			ret = mtd_write_oob(mtd, *ppos, &ops);  in mtdchar_write()
277 			ret = mtd_write(mtd, *ppos, len, &retlen, kbuf);  in mtdchar_write()
312 	struct mtd_info *mtd = mfi->mtd;  in otp_select_filemode()  local
317 		if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) ==  in otp_select_filemode()
324 		if (mtd_read_user_prot_reg(mtd, -1, 0, &retlen, NULL) ==  in otp_select_filemode()
340 static int mtdchar_writeoob(struct file *file, struct mtd_info *mtd,  in mtdchar_writeoob()  argument
344 	struct mtd_info *master  = mtd_get_master(mtd);  in mtdchar_writeoob()
357 	ops.ooboffs = start & (mtd->writesize - 1);  in mtdchar_writeoob()
362 	if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs))  in mtdchar_writeoob()
369 	start &= ~((uint64_t)mtd->writesize - 1);  in mtdchar_writeoob()
370 	ret = mtd_write_oob(mtd, start, &ops);  in mtdchar_writeoob()
382 static int mtdchar_readoob(struct file *file, struct mtd_info *mtd,  in mtdchar_readoob()  argument
394 	ops.ooboffs = start & (mtd->writesize - 1);  in mtdchar_readoob()
399 	if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs))  in mtdchar_readoob()
406 	start &= ~((uint64_t)mtd->writesize - 1);  in mtdchar_readoob()
407 	ret = mtd_read_oob(mtd, start, &ops);  in mtdchar_readoob()
443 static int shrink_ecclayout(struct mtd_info *mtd,  in shrink_ecclayout()  argument
449 	if (!mtd || !to)  in shrink_ecclayout()
458 		ret = mtd_ooblayout_ecc(mtd, section++, &oobregion);  in shrink_ecclayout()
475 		ret = mtd_ooblayout_free(mtd, i, &oobregion);  in shrink_ecclayout()
491 static int get_oobinfo(struct mtd_info *mtd, struct nand_oobinfo *to)  in get_oobinfo()  argument
496 	if (!mtd || !to)  in get_oobinfo()
505 		ret = mtd_ooblayout_ecc(mtd, section++, &oobregion);  in get_oobinfo()
524 		ret = mtd_ooblayout_free(mtd, i, &oobregion);  in get_oobinfo()
541 static int mtdchar_blkpg_ioctl(struct mtd_info *mtd,  in mtdchar_blkpg_ioctl()  argument
556 		if (mtd_is_partition(mtd))  in mtdchar_blkpg_ioctl()
562 		return mtd_add_partition(mtd, p.devname, p.start, p.length);  in mtdchar_blkpg_ioctl()
569 		return mtd_del_partition(mtd, p.pno);  in mtdchar_blkpg_ioctl()
576 static void adjust_oob_length(struct mtd_info *mtd, uint64_t start,  in adjust_oob_length()  argument
585 	start_page = mtd_div_by_ws(start, mtd);  in adjust_oob_length()
586 	end_page = mtd_div_by_ws(start + ops->len - 1, mtd);  in adjust_oob_length()
587 	oob_per_page = mtd_oobavail(mtd, ops);  in adjust_oob_length()
594 mtdchar_write_ioctl(struct mtd_info *mtd, struct mtd_write_req __user *argp)  in mtdchar_write_ioctl()  argument
596 	struct mtd_info *master = mtd_get_master(mtd);  in mtdchar_write_ioctl()
622 	if (check_add_overflow(req.start, req.len, &end) || end > mtd->size)  in mtdchar_write_ioctl()
625 	datbuf_len = min_t(size_t, req.len, mtd->erasesize);  in mtdchar_write_ioctl()
632 	oobbuf_len = min_t(size_t, req.ooblen, mtd->erasesize);  in mtdchar_write_ioctl()
656 		if (ops.len == mtd->erasesize)  in mtdchar_write_ioctl()
657 			ops.len -= mtd_mod_by_ws(req.start + ops.len, mtd);  in mtdchar_write_ioctl()
666 		adjust_oob_length(mtd, req.start, &ops);  in mtdchar_write_ioctl()
674 		ret = mtd_write_oob(mtd, req.start, &ops);  in mtdchar_write_ioctl()
693 mtdchar_read_ioctl(struct mtd_info *mtd, struct mtd_read_req __user *argp)  in mtdchar_read_ioctl()  argument
695 	struct mtd_info *master = mtd_get_master(mtd);  in mtdchar_read_ioctl()
729 	if (check_add_overflow(req.start, req.len, &end) || end > mtd->size) {  in mtdchar_read_ioctl()
734 	datbuf_len = min_t(size_t, req.len, mtd->erasesize);  in mtdchar_read_ioctl()
743 	oobbuf_len = min_t(size_t, req.ooblen, mtd->erasesize);  in mtdchar_read_ioctl()
770 		if (ops.len == mtd->erasesize)  in mtdchar_read_ioctl()
771 			ops.len -= mtd_mod_by_ws(req.start + ops.len, mtd);  in mtdchar_read_ioctl()
773 		ret = mtd_read_oob(mtd, (loff_t)req.start, &ops);  in mtdchar_read_ioctl()
827 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_ioctl()  local
828 	struct mtd_info *master = mtd_get_master(mtd);  in mtdchar_ioctl()
881 		if (copy_to_user(argp, &(mtd->numeraseregions), sizeof(int)))  in mtdchar_ioctl()
894 		if (ur_idx >= mtd->numeraseregions)  in mtdchar_ioctl()
897 		kr = &(mtd->eraseregions[ur_idx]);  in mtdchar_ioctl()
909 		info.type	= mtd->type;  in mtdchar_ioctl()
910 		info.flags	= mtd->flags;  in mtdchar_ioctl()
911 		info.size	= mtd->size;  in mtdchar_ioctl()
912 		info.erasesize	= mtd->erasesize;  in mtdchar_ioctl()
913 		info.writesize	= mtd->writesize;  in mtdchar_ioctl()
914 		info.oobsize	= mtd->oobsize;  in mtdchar_ioctl()
952 			ret = mtd_erase(mtd, erase);  in mtdchar_ioctl()
967 			ret = mtdchar_writeoob(file, mtd, buf.start, buf.length,  in mtdchar_ioctl()
981 			ret = mtdchar_readoob(file, mtd, buf.start, buf.length,  in mtdchar_ioctl()
994 			ret = mtdchar_writeoob(file, mtd, buf.start, buf.length,  in mtdchar_ioctl()
1008 			ret = mtdchar_readoob(file, mtd, buf.start, buf.length,  in mtdchar_ioctl()
1016 		ret = mtdchar_write_ioctl(mtd,  in mtdchar_ioctl()
1023 		ret = mtdchar_read_ioctl(mtd,  in mtdchar_ioctl()
1035 		ret = mtd_lock(mtd, einfo.start, einfo.length);  in mtdchar_ioctl()
1046 		ret = mtd_unlock(mtd, einfo.start, einfo.length);  in mtdchar_ioctl()
1057 		ret = mtd_is_locked(mtd, einfo.start, einfo.length);  in mtdchar_ioctl()
1069 		ret = get_oobinfo(mtd, &oi);  in mtdchar_ioctl()
1084 		return mtd_block_isbad(mtd, offs);  in mtdchar_ioctl()
1093 		return mtd_block_markbad(mtd, offs);  in mtdchar_ioctl()
1119 			ret = mtd_get_fact_prot_info(mtd, 4096, &retlen, buf);  in mtdchar_ioctl()
1122 			ret = mtd_get_user_prot_info(mtd, 4096, &retlen, buf);  in mtdchar_ioctl()
1151 			ret = mtd_lock_user_prot_reg(mtd, oinfo.start, oinfo.length);  in mtdchar_ioctl()
1153 			ret = mtd_erase_user_prot_reg(mtd, oinfo.start, oinfo.length);  in mtdchar_ioctl()
1169 		shrink_ecclayout(mtd, usrlay);  in mtdchar_ioctl()
1179 		if (copy_to_user(argp, &mtd->ecc_stats,  in mtdchar_ioctl()
1196 			if (!mtd_has_oob(mtd))  in mtdchar_ioctl()
1218 			ret = mtdchar_blkpg_ioctl(mtd, &a);  in mtdchar_ioctl()
1236 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_unlocked_ioctl()  local
1237 	struct mtd_info *master = mtd_get_master(mtd);  in mtdchar_unlocked_ioctl()
1262 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_compat_ioctl()  local
1263 	struct mtd_info *master = mtd_get_master(mtd);  in mtdchar_compat_ioctl()
1283 			ret = mtdchar_writeoob(file, mtd, buf.start,  in mtdchar_compat_ioctl()
1298 			ret = mtdchar_readoob(file, mtd, buf.start,  in mtdchar_compat_ioctl()
1322 		ret = mtdchar_blkpg_ioctl(mtd, &a);  in mtdchar_compat_ioctl()
1350 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_get_unmapped_area()  local
1357 	if (len > mtd->size || pgoff >= (mtd->size >> PAGE_SHIFT))  in mtdchar_get_unmapped_area()
1361 	if (offset > mtd->size - len)  in mtdchar_get_unmapped_area()
1364 	ret = mtd_get_unmapped_area(mtd, len, offset, flags);  in mtdchar_get_unmapped_area()
1372 	return mtd_mmap_capabilities(mfi->mtd);  in mtdchar_mmap_capabilities()
1383 	struct mtd_info *mtd = mfi->mtd;  in mtdchar_mmap()  local
1384 	struct map_info *map = mtd->priv;  in mtdchar_mmap()