+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al.
*
- * SPDX-License-Identifier: GPL-2.0+
- *
*/
#ifndef __MTD_MTD_H__
#else
#include <linux/compat.h>
#include <mtd/mtd-abi.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
+#include <linux/list.h>
#include <div64.h>
+#if IS_ENABLED(CONFIG_DM)
+#include <dm/device.h>
+#endif
#define MAX_MTD_DEVICES 32
#endif
* mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW)
* @datbuf: data buffer - if NULL only oob data are read/written
* @oobbuf: oob data buffer
- *
- * Note, it is allowed to read more than one OOB area at one go, but not write.
- * The interface assumes that the OOB write requests program only one page's
- * OOB area.
*/
struct mtd_oob_ops {
unsigned int mode;
#else
#define MTD_MAX_ECCPOS_ENTRIES_LARGE 680
#endif
+/**
+ * struct mtd_oob_region - oob region definition
+ * @offset: region offset
+ * @length: region length
+ *
+ * This structure describes a region of the OOB area, and is used
+ * to retrieve ECC or free bytes sections.
+ * Each section is defined by an offset within the OOB area and a
+ * length.
+ */
+struct mtd_oob_region {
+ u32 offset;
+ u32 length;
+};
+
+/*
+ * struct mtd_ooblayout_ops - NAND OOB layout operations
+ * @ecc: function returning an ECC region in the OOB area.
+ * Should return -ERANGE if %section exceeds the total number of
+ * ECC sections.
+ * @free: function returning a free region in the OOB area.
+ * Should return -ERANGE if %section exceeds the total number of
+ * free sections.
+ */
+struct mtd_ooblayout_ops {
+ int (*ecc)(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobecc);
+ int (*free)(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobfree);
+};
/*
* Internal ECC layout control structure. For historical reasons, there is a
#endif
int index;
+ /* OOB layout description */
+ const struct mtd_ooblayout_ops *ooblayout;
+
/* ECC layout structure pointer - read only! */
struct nand_ecclayout *ecclayout;
struct udevice *dev;
#endif
int usecount;
+
+ /* MTD devices do not have any parent. MTD partitions do. */
+ struct mtd_info *parent;
+
+ /*
+ * Offset of the partition relatively to the parent offset.
+ * Is 0 for real MTD devices (ie. not partitions).
+ */
+ u64 offset;
+
+ /*
+ * List node used to add an MTD partition to the parent
+ * partition list.
+ */
+ struct list_head node;
+
+ /*
+ * List of partitions attached to this MTD device (the parent
+ * MTD device can itself be a partition).
+ */
+ struct list_head partitions;
};
+#if IS_ENABLED(CONFIG_DM)
+static inline void mtd_set_of_node(struct mtd_info *mtd,
+ const struct device_node *np)
+{
+ mtd->dev->node.np = np;
+}
+
+static inline const struct device_node *mtd_get_of_node(struct mtd_info *mtd)
+{
+ return mtd->dev->node.np;
+}
+#else
+struct device_node;
+
+static inline void mtd_set_of_node(struct mtd_info *mtd,
+ const struct device_node *np)
+{
+}
+
+static inline const struct device_node *mtd_get_of_node(struct mtd_info *mtd)
+{
+ return NULL;
+}
+#endif
+
+static inline bool mtd_is_partition(const struct mtd_info *mtd)
+{
+ return mtd->parent;
+}
+
+static inline bool mtd_has_partitions(const struct mtd_info *mtd)
+{
+ return !list_empty(&mtd->partitions);
+}
+
+bool mtd_partitions_used(struct mtd_info *master);
+
+int mtd_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobecc);
+int mtd_ooblayout_find_eccregion(struct mtd_info *mtd, int eccbyte,
+ int *section,
+ struct mtd_oob_region *oobregion);
+int mtd_ooblayout_get_eccbytes(struct mtd_info *mtd, u8 *eccbuf,
+ const u8 *oobbuf, int start, int nbytes);
+int mtd_ooblayout_set_eccbytes(struct mtd_info *mtd, const u8 *eccbuf,
+ u8 *oobbuf, int start, int nbytes);
+int mtd_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobfree);
+int mtd_ooblayout_get_databytes(struct mtd_info *mtd, u8 *databuf,
+ const u8 *oobbuf, int start, int nbytes);
+int mtd_ooblayout_set_databytes(struct mtd_info *mtd, const u8 *databuf,
+ u8 *oobbuf, int start, int nbytes);
+int mtd_ooblayout_count_freebytes(struct mtd_info *mtd);
+int mtd_ooblayout_count_eccbytes(struct mtd_info *mtd);
+
+static inline void mtd_set_ooblayout(struct mtd_info *mtd,
+ const struct mtd_ooblayout_ops *ooblayout)
+{
+ mtd->ooblayout = ooblayout;
+}
+
static inline int mtd_oobavail(struct mtd_info *mtd, struct mtd_oob_ops *ops)
{
return ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize;
const u_char *buf);
int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops);
-
-static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
- struct mtd_oob_ops *ops)
-{
- ops->retlen = ops->oobretlen = 0;
- if (!mtd->_write_oob)
- return -EOPNOTSUPP;
- if (!(mtd->flags & MTD_WRITEABLE))
- return -EROFS;
- return mtd->_write_oob(mtd, to, ops);
-}
+int mtd_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops);
int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
struct otp_info *buf);
}
#endif
-#ifdef __UBOOT__
-/*
- * Debugging macro and defines
- */
-#define MTD_DEBUG_LEVEL0 (0) /* Quiet */
-#define MTD_DEBUG_LEVEL1 (1) /* Audible */
-#define MTD_DEBUG_LEVEL2 (2) /* Loud */
-#define MTD_DEBUG_LEVEL3 (3) /* Noisy */
-
-#ifdef CONFIG_MTD_DEBUG
-#define pr_debug(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define MTDDEBUG(n, args...) \
- do { \
- if (n <= CONFIG_MTD_DEBUG_VERBOSE) \
- printk(KERN_INFO args); \
- } while(0)
-#else /* CONFIG_MTD_DEBUG */
-#define pr_debug(args...)
-#define MTDDEBUG(n, args...) \
- do { \
- if (0) \
- printk(KERN_INFO args); \
- } while(0)
-#endif /* CONFIG_MTD_DEBUG */
-#define pr_info(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define pr_warn(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define pr_err(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define pr_crit(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define pr_cont(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#define pr_notice(args...) MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-#endif
-
static inline int mtd_is_bitflip(int err) {
return err == -EUCLEAN;
}
/* drivers/mtd/mtdcore.h */
int add_mtd_device(struct mtd_info *mtd);
int del_mtd_device(struct mtd_info *mtd);
+
+#ifdef CONFIG_MTD_PARTITIONS
int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
+#else
+static inline int add_mtd_partitions(struct mtd_info *mtd,
+ const struct mtd_partition *parts,
+ int nparts)
+{
+ return 0;
+}
+
+static inline int del_mtd_partitions(struct mtd_info *mtd)
+{
+ return 0;
+}
+#endif
+
+struct mtd_info *__mtd_next_device(int i);
+#define mtd_for_each_device(mtd) \
+ for ((mtd) = __mtd_next_device(0); \
+ (mtd) != NULL; \
+ (mtd) = __mtd_next_device(mtd->index + 1))
int mtd_arg_off(const char *arg, int *idx, loff_t *off, loff_t *size,
loff_t *maxsize, int devtype, uint64_t chipsize);
void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset,
const uint64_t length, uint64_t *len_incl_bad,
int *truncated);
+bool mtd_dev_list_updated(void);
+
+/* drivers/mtd/mtd_uboot.c */
+int mtd_search_alternate_name(const char *mtdname, char *altname,
+ unsigned int max_len);
+
#endif
#endif /* __MTD_MTD_H__ */
projects / platform / kernel / u-boot.git / blobdiff