mtd: resync with Linux-3.7.1
This patch is essentially an update of u-boot MTD subsystem to
the state of Linux-3.7.1 with exclusion of some bits:
- the update is concentrated on NAND, no onenand or CFI/NOR/SPI
flashes interfaces are updated EXCEPT for API changes.
- new large NAND chips support is there, though some updates
have got in Linux-3.8.-rc1, (which will follow on top of this patch).
To produce this update I used tag v3.7.1 of linux-stable repository.
The update was made using application of relevant patches,
with changes relevant to U-Boot-only stuff sticked together
to keep bisectability. Then all changes were grouped together
to this patch.
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
[scottwood@freescale.com: some eccstrength and build fixes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index 8b13b10..69412e4 100644
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -316,7 +316,6 @@
#define CONFIG_SYS_HUSH_PARSER
/* Video */
-#define CONFIG_FSL_DIU_FB
#ifdef CONFIG_FSL_DIU_FB
#define CONFIG_SYS_DIU_ADDR (CONFIG_SYS_CCSRBAR + 0x10000)
@@ -336,7 +335,6 @@
#endif
#ifndef CONFIG_FSL_DIU_FB
-#define CONFIG_ATI
#endif
#ifdef CONFIG_ATI
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 8cbcdae..71292b1 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -81,32 +81,53 @@
#define NAND_BBT_LASTBLOCK 0x00000010
/* The bbt is at the given page, else we must scan for the bbt */
#define NAND_BBT_ABSPAGE 0x00000020
-/* The bbt is at the given page, else we must scan for the bbt */
-#define NAND_BBT_SEARCH 0x00000040
/* bbt is stored per chip on multichip devices */
#define NAND_BBT_PERCHIP 0x00000080
/* bbt has a version counter at offset veroffs */
#define NAND_BBT_VERSION 0x00000100
/* Create a bbt if none exists */
#define NAND_BBT_CREATE 0x00000200
+/*
+ * Create an empty BBT with no vendor information. Vendor's information may be
+ * unavailable, for example, if the NAND controller has a different data and OOB
+ * layout or if this information is already purged. Must be used in conjunction
+ * with NAND_BBT_CREATE.
+ */
+#define NAND_BBT_CREATE_EMPTY 0x00000400
/* Search good / bad pattern through all pages of a block */
-#define NAND_BBT_SCANALLPAGES 0x00000400
+#define NAND_BBT_SCANALLPAGES 0x00000800
/* Scan block empty during good / bad block scan */
-#define NAND_BBT_SCANEMPTY 0x00000800
+#define NAND_BBT_SCANEMPTY 0x00001000
/* Write bbt if neccecary */
-#define NAND_BBT_WRITE 0x00001000
+#define NAND_BBT_WRITE 0x00002000
/* Read and write back block contents when writing bbt */
-#define NAND_BBT_SAVECONTENT 0x00002000
+#define NAND_BBT_SAVECONTENT 0x00004000
/* Search good / bad pattern on the first and the second page */
-#define NAND_BBT_SCAN2NDPAGE 0x00004000
+#define NAND_BBT_SCAN2NDPAGE 0x00008000
/* Search good / bad pattern on the last page of the eraseblock */
-#define NAND_BBT_SCANLASTPAGE 0x00008000
-/* Chip stores bad block marker on BOTH 1st and 6th bytes of OOB */
-#define NAND_BBT_SCANBYTE1AND6 0x00100000
-/* The nand_bbt_descr was created dynamicaly and must be freed */
-#define NAND_BBT_DYNAMICSTRUCT 0x00200000
-/* The bad block table does not OOB for marker */
-#define NAND_BBT_NO_OOB 0x00400000
+#define NAND_BBT_SCANLASTPAGE 0x00010000
+/*
+ * Use a flash based bad block table. By default, OOB identifier is saved in
+ * OOB area. This option is passed to the default bad block table function.
+ */
+#define NAND_BBT_USE_FLASH 0x00020000
+/*
+ * Do not store flash based bad block table marker in the OOB area; store it
+ * in-band.
+ */
+#define NAND_BBT_NO_OOB 0x00040000
+/*
+ * Do not write new bad block markers to OOB; useful, e.g., when ECC covers
+ * entire spare area. Must be used with NAND_BBT_USE_FLASH.
+ */
+#define NAND_BBT_NO_OOB_BBM 0x00080000
+
+/*
+ * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr
+ * was allocated dynamicaly and must be freed in nand_release(). Has no meaning
+ * in nand_chip.bbt_options.
+ */
+#define NAND_BBT_DYNAMICSTRUCT 0x80000000
/* The maximum number of blocks to scan for a bbt */
#define NAND_BBT_SCAN_MAXBLOCKS 4
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 141c960..6f44abd 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -9,7 +9,8 @@
#include <linux/types.h>
#include <div64.h>
-#include <linux/mtd/mtd-abi.h>
+#include <mtd/mtd-abi.h>
+#include <asm/errno.h>
#define MTD_CHAR_MAJOR 90
#define MTD_BLOCK_MAJOR 31
@@ -65,22 +66,6 @@
unsigned long *lockmap; /* If keeping bitmap of locks */
};
-/*
- * oob operation modes
- *
- * MTD_OOB_PLACE: oob data are placed at the given offset
- * MTD_OOB_AUTO: oob data are automatically placed at the free areas
- * which are defined by the ecclayout
- * MTD_OOB_RAW: mode to read raw data+oob in one chunk. The oob data
- * is inserted into the data. Thats a raw image of the
- * flash contents.
- */
-typedef enum {
- MTD_OOB_PLACE,
- MTD_OOB_AUTO,
- MTD_OOB_RAW,
-} mtd_oob_mode_t;
-
/**
* struct mtd_oob_ops - oob operation operands
* @mode: operation mode
@@ -92,7 +77,7 @@
* @ooblen: number of oob bytes to write/read
* @oobretlen: number of oob bytes written/read
* @ooboffs: offset of oob data in the oob area (only relevant when
- * mode = MTD_OOB_PLACE)
+ * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW)
* @datbuf: data buffer - if NULL only oob data are read/written
* @oobbuf: oob data buffer
*
@@ -101,7 +86,7 @@
* OOB area.
*/
struct mtd_oob_ops {
- mtd_oob_mode_t mode;
+ unsigned int mode;
size_t len;
size_t retlen;
size_t ooblen;
@@ -133,13 +118,25 @@
u_int32_t oobsize; /* Amount of OOB data per block (e.g. 16) */
u_int32_t oobavail; /* Available OOB bytes per block */
+ /*
+ * read ops return -EUCLEAN if max number of bitflips corrected on any
+ * one region comprising an ecc step equals or exceeds this value.
+ * Settable by driver, else defaults to ecc_strength. User can override
+ * in sysfs. N.B. The meaning of the -EUCLEAN return code has changed;
+ * see Documentation/ABI/testing/sysfs-class-mtd for more detail.
+ */
+ unsigned int bitflip_threshold;
+
/* Kernel-only stuff starts here. */
const char *name;
int index;
- /* ecc layout structure pointer - read only ! */
+ /* ECC layout structure pointer - read only! */
struct nand_ecclayout *ecclayout;
+ /* max number of correctible bit errors per ecc step */
+ unsigned int ecc_strength;
+
/* Data for variable erase regions. If numeraseregions is zero,
* it means that the whole device has erasesize as given above.
*/
@@ -147,25 +144,17 @@
struct mtd_erase_region_info *eraseregions;
/*
- * Erase is an asynchronous operation. Device drivers are supposed
- * to call instr->callback() whenever the operation completes, even
- * if it completes with a failure.
- * Callers are supposed to pass a callback function and wait for it
- * to be called before writing to the block.
+ * Do not call via these pointers, use corresponding mtd_*()
+ * wrappers instead.
*/
- int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
-
- /* This stuff for eXecute-In-Place */
- /* phys is optional and may be set to NULL */
- int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
+ int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
+ int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, phys_addr_t *phys);
-
- /* We probably shouldn't allow XIP if the unpoint isn't a NULL */
- void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
-
-
- int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
- int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
+ void (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+ int (*_read) (struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf);
+ int (*_write) (struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf);
/* In blackbox flight recorder like scenarios we want to make successful
writes in interrupt context. panic_write() is only intended to be
@@ -174,24 +163,35 @@
longer, this function can break locks and delay to ensure the write
succeeds (but not sleep). */
- int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
+ int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
- int (*read_oob) (struct mtd_info *mtd, loff_t from,
+ int (*_read_oob) (struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops);
- int (*write_oob) (struct mtd_info *mtd, loff_t to,
+ int (*_write_oob) (struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops);
-
+ int (*_get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+ size_t len);
+ int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
+ size_t len, size_t *retlen, u_char *buf);
+ int (*_get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
+ size_t len);
+ int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+ size_t len, size_t *retlen, u_char *buf);
+ int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, u_char *buf);
+ int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
+ size_t len);
+ void (*_sync) (struct mtd_info *mtd);
+ int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+ int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+ int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs);
+ int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
/*
- * Methods to access the protection register area, present in some
- * flash devices. The user data is one time programmable but the
- * factory data is read only.
+ * If the driver is something smart, like UBI, it may need to maintain
+ * its own reference counting. The below functions are only for driver.
*/
- int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
- int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
- int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
- int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
- int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
- int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len);
+ int (*_get_device) (struct mtd_info *mtd);
+ void (*_put_device) (struct mtd_info *mtd);
/* XXX U-BOOT XXX */
#if 0
@@ -201,18 +201,6 @@
*/
int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
#endif
-
- /* Sync */
- void (*sync) (struct mtd_info *mtd);
-
- /* Chip-supported device locking */
- int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
- int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
-
- /* Bad block management functions */
- int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
- int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
-
/* XXX U-BOOT XXX */
#if 0
struct notifier_block reboot_notifier; /* default mode before reboot */
@@ -227,15 +215,59 @@
struct module *owner;
int usecount;
-
- /* If the driver is something smart, like UBI, it may need to maintain
- * its own reference counting. The below functions are only for driver.
- * The driver may register its callbacks. These callbacks are not
- * supposed to be called by MTD users */
- int (*get_device) (struct mtd_info *mtd);
- void (*put_device) (struct mtd_info *mtd);
};
+int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
+int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+ u_char *buf);
+int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+ const u_char *buf);
+int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
+ 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_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+ size_t len);
+int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf);
+int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf,
+ size_t len);
+int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf);
+int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, u_char *buf);
+int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len);
+
+/* XXX U-BOOT XXX */
+#if 0
+int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
+ unsigned long count, loff_t to, size_t *retlen);
+#endif
+
+static inline void mtd_sync(struct mtd_info *mtd)
+{
+ if (mtd->_sync)
+ mtd->_sync(mtd);
+}
+
+int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs);
+int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs);
+
static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
{
do_div(sz, mtd->erasesize);
@@ -247,6 +279,16 @@
return do_div(sz, mtd->erasesize);
}
+static inline int mtd_has_oob(const struct mtd_info *mtd)
+{
+ return mtd->_read_oob && mtd->_write_oob;
+}
+
+static inline int mtd_can_have_bb(const struct mtd_info *mtd)
+{
+ return !!mtd->_block_isbad;
+}
+
/* Kernel-side ioctl definitions */
extern int add_mtd_device(struct mtd_info *mtd);
@@ -269,12 +311,6 @@
extern void register_mtd_user (struct mtd_notifier *new);
extern int unregister_mtd_user (struct mtd_notifier *old);
-
-int default_mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
- unsigned long count, loff_t to, size_t *retlen);
-
-int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs,
- unsigned long count, loff_t from, size_t *retlen);
#endif
#ifdef CONFIG_MTD_PARTITIONS
@@ -296,17 +332,34 @@
#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)
+
+static inline int mtd_is_bitflip(int err) {
+ return err == -EUCLEAN;
+}
+
+static inline int mtd_is_eccerr(int err) {
+ return err == -EBADMSG;
+}
+
+static inline int mtd_is_bitflip_or_eccerr(int err) {
+ return mtd_is_bitflip(err) || mtd_is_eccerr(err);
+}
#endif /* __MTD_MTD_H__ */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 98bf255..2055584 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -46,7 +46,7 @@
* is supported now. If you add a chip with bigger oobsize/page
* adjust this accordingly.
*/
-#define NAND_MAX_OOBSIZE 576
+#define NAND_MAX_OOBSIZE 640
#define NAND_MAX_PAGESIZE 8192
/*
@@ -82,6 +82,8 @@
#define NAND_CMD_READID 0x90
#define NAND_CMD_ERASE2 0xd0
#define NAND_CMD_PARAM 0xec
+#define NAND_CMD_GET_FEATURES 0xee
+#define NAND_CMD_SET_FEATURES 0xef
#define NAND_CMD_RESET 0xff
#define NAND_CMD_LOCK 0x2a
@@ -142,7 +144,7 @@
#define NAND_ECC_READ 0
/* Reset Hardware ECC for write */
#define NAND_ECC_WRITE 1
-/* Enable Hardware ECC before syndrom is read back from flash */
+/* Enable Hardware ECC before syndrome is read back from flash */
#define NAND_ECC_READSYN 2
/* Bit mask for flags passed to do_nand_read_ecc */
@@ -153,9 +155,7 @@
* Option constants for bizarre disfunctionality and real
* features.
*/
-/* Chip can not auto increment pages */
-#define NAND_NO_AUTOINCR 0x00000001
-/* Buswitdh is 16 bit */
+/* Buswidth is 16 bit */
#define NAND_BUSWIDTH_16 0x00000002
/* Device supports partial programming without padding */
#define NAND_NO_PADDING 0x00000004
@@ -179,12 +179,6 @@
* This happens with the Renesas AG-AND chips, possibly others.
*/
#define BBT_AUTO_REFRESH 0x00000080
-/*
- * Chip does not require ready check on read. true
- * for all large page devices, as they do not support
- * autoincrement.
- */
-#define NAND_NO_READRDY 0x00000100
/* Chip does not allow subpage writes */
#define NAND_NO_SUBPAGE_WRITE 0x00000200
@@ -202,34 +196,21 @@
(NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK)
/* Macros to identify the above */
-#define NAND_CANAUTOINCR(chip) (!(chip->options & NAND_NO_AUTOINCR))
#define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING))
#define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG))
#define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK))
#define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))
/* Non chip related options */
-/*
- * Use a flash based bad block table. OOB identifier is saved in OOB area.
- * This option is passed to the default bad block table function.
- */
-#define NAND_USE_FLASH_BBT 0x00010000
/* This option skips the bbt scan during initialization. */
-#define NAND_SKIP_BBTSCAN 0x00020000
+#define NAND_SKIP_BBTSCAN 0x00010000
/*
* This option is defined if the board driver allocates its own buffers
* (e.g. because it needs them DMA-coherent).
*/
-#define NAND_OWN_BUFFERS 0x00040000
+#define NAND_OWN_BUFFERS 0x00020000
/* Chip may not exist, so silence any errors in scan */
-#define NAND_SCAN_SILENT_NODEV 0x00080000
-/*
- * If passed additionally to NAND_USE_FLASH_BBT then BBT code will not touch
- * the OOB area.
- */
-#define NAND_USE_FLASH_BBT_NO_OOB 0x00800000
-/* Create an empty BBT with no vendor information if the BBT is available */
-#define NAND_CREATE_EMPTY_BBT 0x01000000
+#define NAND_SCAN_SILENT_NODEV 0x00040000
/* Options set by nand scan */
/* bbt has already been read */
@@ -244,6 +225,21 @@
/* Keep gcc happy */
struct nand_chip;
+/* ONFI timing mode, used in both asynchronous and synchronous mode */
+#define ONFI_TIMING_MODE_0 (1 << 0)
+#define ONFI_TIMING_MODE_1 (1 << 1)
+#define ONFI_TIMING_MODE_2 (1 << 2)
+#define ONFI_TIMING_MODE_3 (1 << 3)
+#define ONFI_TIMING_MODE_4 (1 << 4)
+#define ONFI_TIMING_MODE_5 (1 << 5)
+#define ONFI_TIMING_MODE_UNKNOWN (1 << 6)
+
+/* ONFI feature address */
+#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1
+
+/* ONFI subfeature parameters length */
+#define ONFI_SUBFEATURE_PARAM_LEN 4
+
struct nand_onfi_params {
/* rev info and features block */
/* 'O' 'N' 'F' 'I' */
@@ -326,27 +322,32 @@
};
/**
- * struct nand_ecc_ctrl - Control structure for ecc
- * @mode: ecc mode
- * @steps: number of ecc steps per page
- * @size: data bytes per ecc step
- * @bytes: ecc bytes per step
- * @total: total number of ecc bytes per page
- * @prepad: padding information for syndrome based ecc generators
- * @postpad: padding information for syndrome based ecc generators
+ * struct nand_ecc_ctrl - Control structure for ECC
+ * @mode: ECC mode
+ * @steps: number of ECC steps per page
+ * @size: data bytes per ECC step
+ * @bytes: ECC bytes per step
+ * @strength: max number of correctible bits per ECC step
+ * @total: total number of ECC bytes per page
+ * @prepad: padding information for syndrome based ECC generators
+ * @postpad: padding information for syndrome based ECC generators
* @layout: ECC layout control struct pointer
- * @priv: pointer to private ecc control data
- * @hwctl: function to control hardware ecc generator. Must only
+ * @priv: pointer to private ECC control data
+ * @hwctl: function to control hardware ECC generator. Must only
* be provided if an hardware ECC is available
- * @calculate: function for ecc calculation or readback from ecc hardware
- * @correct: function for ecc correction, matching to ecc generator (sw/hw)
+ * @calculate: function for ECC calculation or readback from ECC hardware
+ * @correct: function for ECC correction, matching to ECC generator (sw/hw)
* @read_page_raw: function to read a raw page without ECC
* @write_page_raw: function to write a raw page without ECC
- * @read_page: function to read a page according to the ecc generator
+ * @read_page: function to read a page according to the ECC generator
+ * requirements; returns maximum number of bitflips corrected in
+ * any single ECC step, 0 if bitflips uncorrectable, -EIO hw error
+ * @read_subpage: function to read parts of the page covered by ECC;
+ * returns same as read_page()
+ * @write_page: function to write a page according to the ECC generator
* requirements.
- * @read_subpage: function to read parts of the page covered by ECC.
- * @write_page: function to write a page according to the ecc generator
- * requirements.
+ * @write_oob_raw: function to write chip OOB data without ECC
+ * @read_oob_raw: function to read chip OOB data without ECC
* @read_oob: function to read chip OOB data
* @write_oob: function to write chip OOB data
*/
@@ -356,6 +357,7 @@
int size;
int bytes;
int total;
+ int strength;
int prepad;
int postpad;
struct nand_ecclayout *layout;
@@ -366,25 +368,28 @@
int (*correct)(struct mtd_info *mtd, uint8_t *dat, uint8_t *read_ecc,
uint8_t *calc_ecc);
int (*read_page_raw)(struct mtd_info *mtd, struct nand_chip *chip,
- uint8_t *buf, int page);
- void (*write_page_raw)(struct mtd_info *mtd, struct nand_chip *chip,
- const uint8_t *buf);
+ uint8_t *buf, int oob_required, int page);
+ int (*write_page_raw)(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required);
int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip,
- uint8_t *buf, int page);
+ uint8_t *buf, int oob_required, int page);
int (*read_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
uint32_t offs, uint32_t len, uint8_t *buf);
- void (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
- const uint8_t *buf);
- int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page,
- int sndcmd);
+ int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int oob_required);
+ int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip,
+ int page);
+ int (*read_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip,
+ int page);
+ int (*read_oob)(struct mtd_info *mtd, struct nand_chip *chip, int page);
int (*write_oob)(struct mtd_info *mtd, struct nand_chip *chip,
int page);
};
/**
* struct nand_buffers - buffer structure for read/write
- * @ecccalc: buffer for calculated ecc
- * @ecccode: buffer for ecc read from flash
+ * @ecccalc: buffer for calculated ECC
+ * @ecccode: buffer for ECC read from flash
* @databuf: buffer for data - dynamically sized
*
* Do not change the order of buffers. databuf and oobrbuf must be in
@@ -418,7 +423,7 @@
* mtd->oobsize, mtd->writesize and so on.
* @id_data contains the 8 bytes values of NAND_CMD_READID.
* Return with the bus width.
- * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing
+ * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accessing
* device ready/busy line. If set to NULL no access to
* ready/busy is available and the ready/busy information
* is read from the chip status register.
@@ -426,17 +431,17 @@
* commands to the chip.
* @waitfunc: [REPLACEABLE] hardwarespecific function for wait on
* ready.
- * @ecc: [BOARDSPECIFIC] ecc control ctructure
+ * @ecc: [BOARDSPECIFIC] ECC control structure
* @buffers: buffer structure for read/write
* @hwcontrol: platform-specific hardware control structure
- * @ops: oob operation operands
* @erase_cmd: [INTERN] erase command write function, selectable due
* to AND support.
* @scan_bbt: [REPLACEABLE] function to scan bad block table
* @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring
* data from array to read regs (tR).
* @state: [INTERN] the current state of the NAND device
- * @oob_poi: poison value buffer
+ * @oob_poi: "poison value buffer," used for laying out OOB data
+ * before writing
* @page_shift: [INTERN] number of address bits in a page (column
* address bits).
* @phys_erase_shift: [INTERN] number of address bits in a physical eraseblock
@@ -445,10 +450,14 @@
* @options: [BOARDSPECIFIC] various chip options. They can partly
* be set to inform nand_scan about special functionality.
* See the defines for further explanation.
+ * @bbt_options: [INTERN] bad block specific options. All options used
+ * here must come from bbm.h. By default, these options
+ * will be copied to the appropriate nand_bbt_descr's.
* @badblockpos: [INTERN] position of the bad block marker in the oob
* area.
- * @badblockbits: [INTERN] number of bits to left-shift the bad block
- * number
+ * @badblockbits: [INTERN] minimum number of set bits in a good block's
+ * bad block marker position; i.e., BBM == 11110111b is
+ * not bad when badblockbits == 7
* @cellinfo: [INTERN] MLC/multichip data from chip ident
* @numchips: [INTERN] number of physical chips
* @chipsize: [INTERN] the size of one chip for multichip arrays
@@ -460,7 +469,9 @@
* non 0 if ONFI supported.
* @onfi_params: [INTERN] holds the ONFI page parameter when ONFI is
* supported, 0 otherwise.
- * @ecclayout: [REPLACEABLE] the default ecc placement scheme
+ * @onfi_set_features [REPLACEABLE] set the features for ONFI nand
+ * @onfi_get_features [REPLACEABLE] get the features for ONFI nand
+ * @ecclayout: [REPLACEABLE] the default ECC placement scheme
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash
* lookup.
@@ -468,9 +479,9 @@
* @badblock_pattern: [REPLACEABLE] bad block scan pattern used for initial
* bad block scan.
* @controller: [REPLACEABLE] a pointer to a hardware controller
- * structure which is shared among multiple independend
+ * structure which is shared among multiple independent
* devices.
- * @priv: [OPTIONAL] pointer to private chip date
+ * @priv: [OPTIONAL] pointer to private chip data
* @errstat: [OPTIONAL] hardware specific function to perform
* additional error status checks (determine if errors are
* correctable).
@@ -501,10 +512,16 @@
int (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state,
int status, int page);
int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
- const uint8_t *buf, int page, int cached, int raw);
+ const uint8_t *buf, int oob_required, int page,
+ int cached, int raw);
+ int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ int feature_addr, uint8_t *subfeature_para);
+ int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ int feature_addr, uint8_t *subfeature_para);
int chip_delay;
unsigned int options;
+ unsigned int bbt_options;
int page_shift;
int phys_erase_shift;
@@ -534,8 +551,6 @@
struct nand_buffers *buffers;
struct nand_hw_control hwcontrol;
- struct mtd_oob_ops ops;
-
uint8_t *bbt;
struct nand_bbt_descr *bbt_td;
struct nand_bbt_descr *bbt_md;
@@ -557,6 +572,8 @@
#define NAND_MFR_HYNIX 0xad
#define NAND_MFR_MICRON 0x2c
#define NAND_MFR_AMD 0x01
+#define NAND_MFR_MACRONIX 0xc2
+#define NAND_MFR_EON 0x92
/**
* struct nand_flash_dev - NAND Flash Device ID Structure
@@ -615,9 +632,9 @@
* @partitions: mtd partition list
* @chip_delay: R/B delay value in us
* @options: Option flags, e.g. 16bit buswidth
- * @ecclayout: ecc layout info structure
+ * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH
+ * @ecclayout: ECC layout info structure
* @part_probe_types: NULL-terminated array of probe types
- * @priv: hardware controller specific settings
*/
struct platform_nand_chip {
int nr_chips;
@@ -627,8 +644,8 @@
struct nand_ecclayout *ecclayout;
int chip_delay;
unsigned int options;
+ unsigned int bbt_options;
const char **part_probe_types;
- void *priv;
};
/* Keep gcc happy */
@@ -650,6 +667,7 @@
int (*dev_ready)(struct mtd_info *mtd);
void (*select_chip)(struct mtd_info *mtd, int chip);
void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);
+ unsigned char (*read_byte)(struct mtd_info *mtd);
void *priv;
};
@@ -679,4 +697,23 @@
void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
uint8_t nand_read_byte(struct mtd_info *mtd);
+/* return the supported asynchronous timing mode. */
+
+#ifdef CONFIG_SYS_NAND_ONFI_DETECTION
+static inline int onfi_get_async_timing_mode(struct nand_chip *chip)
+{
+ if (!chip->onfi_version)
+ return ONFI_TIMING_MODE_UNKNOWN;
+ return le16_to_cpu(chip->onfi_params.async_timing_mode);
+}
+
+/* return the supported synchronous timing mode. */
+static inline int onfi_get_sync_timing_mode(struct nand_chip *chip)
+{
+ if (!chip->onfi_version)
+ return ONFI_TIMING_MODE_UNKNOWN;
+ return le16_to_cpu(chip->onfi_params.src_sync_timing_mode);
+}
+#endif
+
#endif /* __LINUX_MTD_NAND_H */
diff --git a/include/linux/string.h b/include/linux/string.h
index e9b134d..8e44855 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -85,6 +85,9 @@
#ifndef __HAVE_ARCH_MEMCHR
extern void * memchr(const void *,int,__kernel_size_t);
#endif
+#ifndef __HAVE_ARCH_MEMCHR_INV
+void *memchr_inv(const void *, int, size_t);
+#endif
#ifdef __cplusplus
}
diff --git a/include/linux/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
similarity index 65%
rename from include/linux/mtd/mtd-abi.h
rename to include/mtd/mtd-abi.h
index 8bdd231..d51c1ab 100644
--- a/include/linux/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -24,6 +24,25 @@
unsigned char __user *ptr;
};
+/*
+ * MTD operation modes
+ *
+ * @MTD_OPS_PLACE_OOB: OOB data are placed at the given offset (default)
+ * @MTD_OPS_AUTO_OOB: OOB data are automatically placed at the free areas
+ * which are defined by the internal ecclayout
+ * @MTD_OPS_RAW: data are transferred as-is, with no error correction;
+ * this mode implies %MTD_OPS_PLACE_OOB
+ *
+ * These modes can be passed to ioctl(MEMWRITE) and are also used internally.
+ * See notes on "MTD file modes" for discussion on %MTD_OPS_RAW vs.
+ * %MTD_FILE_MODE_RAW.
+ */
+enum {
+ MTD_OPS_PLACE_OOB = 0,
+ MTD_OPS_AUTO_OOB = 1,
+ MTD_OPS_RAW = 2,
+};
+
#define MTD_ABSENT 0
#define MTD_RAM 1
#define MTD_ROM 2
@@ -82,24 +101,42 @@
uint32_t locked;
};
+/* Get basic MTD characteristics info (better to use sysfs) */
#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
+/* Erase segment of MTD */
#define MEMERASE _IOW('M', 2, struct erase_info_user)
+/* Write out-of-band data from MTD */
#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
+/* Read out-of-band data from MTD */
#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
+/* Lock a chip (for MTD that supports it) */
#define MEMLOCK _IOW('M', 5, struct erase_info_user)
+/* Unlock a chip (for MTD that supports it) */
#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
+/* Get the number of different erase regions */
#define MEMGETREGIONCOUNT _IOR('M', 7, int)
+/* Get information about the erase region for a specific index */
#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
+/* Get info about OOB modes (e.g., RAW, PLACE, AUTO) - legacy interface */
#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
+/* Check if an eraseblock is bad */
#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
+/* Mark an eraseblock as bad */
#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
+/* Set OTP (One-Time Programmable) mode (factory vs. user) */
#define OTPSELECT _IOR('M', 13, int)
+/* Get number of OTP (One-Time Programmable) regions */
#define OTPGETREGIONCOUNT _IOW('M', 14, int)
+/* Get all OTP (One-Time Programmable) info about MTD */
#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
+/* Lock a given range of user data (must be in mode %MTD_FILE_MODE_OTP_USER) */
#define OTPLOCK _IOR('M', 16, struct otp_info)
+/* Get ECC layout (deprecated) */
#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
+/* Get statistics about corrected/uncorrected errors */
#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
+/* Set MTD mode on a per-file-descriptor basis (see "MTD file modes") */
#define MTDFILEMODE _IO('M', 19)
/*
@@ -146,7 +183,21 @@
};
/*
- * Read/write file modes for access to MTD
+ * MTD file modes - for read/write access to MTD
+ *
+ * @MTD_FILE_MODE_NORMAL: OTP disabled, ECC enabled
+ * @MTD_FILE_MODE_OTP_FACTORY: OTP enabled in factory mode
+ * @MTD_FILE_MODE_OTP_USER: OTP enabled in user mode
+ * @MTD_FILE_MODE_RAW: OTP disabled, ECC disabled
+ *
+ * These modes can be set via ioctl(MTDFILEMODE). The mode mode will be retained
+ * separately for each open file descriptor.
+ *
+ * Note: %MTD_FILE_MODE_RAW provides the same functionality as %MTD_OPS_RAW -
+ * raw access to the flash, without error correction or autoplacement schemes.
+ * Wherever possible, the MTD_OPS_* mode will override the MTD_FILE_MODE_* mode
+ * (e.g., when using ioctl(MEMWRITE)), but in some cases, the MTD_FILE_MODE is
+ * used out of necessity (e.g., `write()', ioctl(MEMWRITEOOB64)).
*/
enum mtd_file_modes {
MTD_MODE_NORMAL = MTD_OTP_OFF,
diff --git a/include/nand.h b/include/nand.h
index 4f96523..26190e4 100644
--- a/include/nand.h
+++ b/include/nand.h
@@ -56,17 +56,17 @@
static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
{
- return info->read(info, ofs, *len, (size_t *)len, buf);
+ return mtd_read(info, ofs, *len, (size_t *)len, buf);
}
static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
{
- return info->write(info, ofs, *len, (size_t *)len, buf);
+ return mtd_write(info, ofs, *len, (size_t *)len, buf);
}
static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
{
- return info->block_isbad(info, ofs);
+ return mtd_block_isbad(info, ofs);
}
static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
@@ -78,7 +78,7 @@
instr.len = size;
instr.callback = 0;
- return info->erase(info, &instr);
+ return mtd_erase(info, &instr);
}