Merge branch 'master' of git://git.denx.de/u-boot

Signed-off-by: Stefano Babic <sbabic@denx.de>

1 files changed, 65 insertions, 27 deletions

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 23072fdfc3..b5a02c3382 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -25,6 +25,8 @@
 
 struct mtd_info;
 struct nand_flash_dev;
+struct device_node;
+
 /* Scan and identify a NAND device */
 extern int nand_scan(struct mtd_info *mtd, int max_chips);
 /*
@@ -144,6 +146,14 @@ typedef enum {
 /* Enable Hardware ECC before syndrome is read back from flash */
 #define NAND_ECC_READSYN	2
 
+/*
+ * Enable generic NAND 'page erased' check. This check is only done when
+ * ecc.correct() returns -EBADMSG.
+ * Set this flag if your implementation does not fix bitflips in erased
+ * pages and you want to rely on the default implementation.
+ */
+#define NAND_ECC_GENERIC_ERASED_CHECK	BIT(0)
+
 /* Bit mask for flags passed to do_nand_read_ecc */
 #define NAND_GET_DEVICE		0x80
 
@@ -179,6 +189,12 @@ typedef enum {
 /* Device supports subpage reads */
 #define NAND_SUBPAGE_READ	0x00001000
 
+/*
+ * Some MLC NANDs need data scrambling to limit bitflips caused by repeated
+ * patterns.
+ */
+#define NAND_NEED_SCRAMBLING	0x00002000
+
 /* Options valid for Samsung large page devices */
 #define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG
 
@@ -203,6 +219,11 @@ typedef enum {
  * before calling nand_scan_tail.
  */
 #define NAND_BUSWIDTH_AUTO      0x00080000
+/*
+ * This option could be defined by controller drivers to protect against
+ * kmap'ed, vmalloc'ed highmem buffers being passed from upper layers
+ */
+#define NAND_USE_BOUNCE_BUFFER	0x00100000
 
 /* Options set by nand scan */
 /* bbt has already been read */
@@ -292,15 +313,15 @@ struct nand_onfi_params {
 	__le16 t_r;
 	__le16 t_ccs;
 	__le16 src_sync_timing_mode;
-	__le16 src_ssync_features;
+	u8 src_ssync_features;
 	__le16 clk_pin_capacitance_typ;
 	__le16 io_pin_capacitance_typ;
 	__le16 input_pin_capacitance_typ;
 	u8 input_pin_capacitance_max;
 	u8 driver_strength_support;
 	__le16 t_int_r;
-	__le16 t_ald;
-	u8 reserved4[7];
+	__le16 t_adl;
+	u8 reserved4[8];
 
 	/* vendor */
 	__le16 vendor_revision;
@@ -423,7 +444,7 @@ struct nand_jedec_params {
 	__le16 input_pin_capacitance_typ;
 	__le16 clk_pin_capacitance_typ;
 	u8 driver_strength_support;
-	__le16 t_ald;
+	__le16 t_adl;
 	u8 reserved4[36];
 
 	/* ECC and endurance block */
@@ -466,12 +487,19 @@ struct nand_hw_control {
  * @total:	total number of ECC bytes per page
  * @prepad:	padding information for syndrome based ECC generators
  * @postpad:	padding information for syndrome based ECC generators
+ * @options:	ECC specific options (see NAND_ECC_XXX flags defined above)
  * @layout:	ECC layout control struct pointer
  * @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)
+ * @correct:	function for ECC correction, matching to ECC generator (sw/hw).
+ *		Should return a positive number representing the number of
+ *		corrected bitflips, -EBADMSG if the number of bitflips exceed
+ *		ECC strength, or any other error code if the error is not
+ *		directly related to correction.
+ *		If -EBADMSG is returned the input buffers should be left
+ *		untouched.
  * @read_page_raw:	function to read a raw page without ECC. This function
  *			should hide the specific layout used by the ECC
  *			controller and always return contiguous in-band and
@@ -509,6 +537,7 @@ struct nand_ecc_ctrl {
 	int strength;
 	int prepad;
 	int postpad;
+	unsigned int options;
 	struct nand_ecclayout	*layout;
 	void *priv;
 	void (*hwctl)(struct mtd_info *mtd, int mode);
@@ -519,16 +548,16 @@ struct nand_ecc_ctrl {
 	int (*read_page_raw)(struct mtd_info *mtd, struct nand_chip *chip,
 			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);
+			const uint8_t *buf, int oob_required, int page);
 	int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip,
 			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, int page);
 	int (*write_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
 			uint32_t offset, uint32_t data_len,
-			const uint8_t *data_buf, int oob_required);
+			const uint8_t *data_buf, int oob_required, int page);
 	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
-			const uint8_t *buf, int oob_required);
+			const uint8_t *buf, int oob_required, int page);
 	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,
@@ -556,6 +585,7 @@ struct nand_buffers {
 
 /**
  * struct nand_chip - NAND Private Flash Chip Data
+ * @mtd:		MTD device registered to the MTD framework
  * @IO_ADDR_R:		[BOARDSPECIFIC] address to read the 8 I/O lines of the
  *			flash device
  * @IO_ADDR_W:		[BOARDSPECIFIC] address to write the 8 I/O lines of the
@@ -571,10 +601,6 @@ struct nand_buffers {
  * @block_markbad:	[REPLACEABLE] mark a block bad
  * @cmd_ctrl:		[BOARDSPECIFIC] hardwarespecific function for controlling
  *			ALE/CLE/nCE. Also used to write command and address
- * @init_size:		[BOARDSPECIFIC] hardwarespecific function for setting
- *			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 accessing
  *			device ready/busy line. If set to NULL no access to
  *			ready/busy is available and the ready/busy information
@@ -659,6 +685,7 @@ struct nand_buffers {
  */
 
 struct nand_chip {
+	struct mtd_info mtd;
 	void __iomem *IO_ADDR_R;
 	void __iomem *IO_ADDR_W;
 
@@ -668,11 +695,9 @@ struct nand_chip {
 	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
 	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
 	void (*select_chip)(struct mtd_info *mtd, int chip);
-	int (*block_bad)(struct mtd_info *mtd, loff_t ofs, int getchip);
+	int (*block_bad)(struct mtd_info *mtd, loff_t ofs);
 	int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
 	void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);
-	int (*init_size)(struct mtd_info *mtd, struct nand_chip *this,
-			u8 *id_data);
 	int (*dev_ready)(struct mtd_info *mtd);
 	void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column,
 			int page_addr);
@@ -739,6 +764,26 @@ struct nand_chip {
 	void *priv;
 };
 
+static inline struct nand_chip *mtd_to_nand(struct mtd_info *mtd)
+{
+	return container_of(mtd, struct nand_chip, mtd);
+}
+
+static inline struct mtd_info *nand_to_mtd(struct nand_chip *chip)
+{
+	return &chip->mtd;
+}
+
+static inline void *nand_get_controller_data(struct nand_chip *chip)
+{
+	return chip->priv;
+}
+
+static inline void nand_set_controller_data(struct nand_chip *chip, void *priv)
+{
+	chip->priv = priv;
+}
+
 /*
  * NAND Flash Manufacturer ID Codes
  */
@@ -852,7 +897,6 @@ struct nand_manufacturers {
 extern struct nand_flash_dev nand_flash_ids[];
 extern struct nand_manufacturers nand_manuf_ids[];
 
-extern int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd);
 extern int nand_default_bbt(struct mtd_info *mtd);
 extern int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);
 extern int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs);
@@ -877,7 +921,6 @@ extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len,
  * @chip_delay:		R/B delay value in us
  * @options:		Option flags, e.g. 16bit buswidth
  * @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
  */
 struct platform_nand_chip {
@@ -885,7 +928,6 @@ struct platform_nand_chip {
 	int chip_offset;
 	int nr_partitions;
 	struct mtd_partition *partitions;
-	struct nand_ecclayout *ecclayout;
 	int chip_delay;
 	unsigned int options;
 	unsigned int bbt_options;
@@ -934,15 +976,6 @@ struct platform_nand_data {
 	struct platform_nand_ctrl ctrl;
 };
 
-/* Some helpers to access the data structures */
-static inline
-struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd)
-{
-	struct nand_chip *chip = mtd->priv;
-
-	return chip->priv;
-}
-
 #ifdef CONFIG_SYS_NAND_ONFI_DETECTION
 /* return the supported features. */
 static inline int onfi_feature(struct nand_chip *chip)
@@ -1060,4 +1093,9 @@ struct nand_sdr_timings {
 
 /* get timing characteristics from ONFI timing mode. */
 const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode);
+
+int nand_check_erased_ecc_chunk(void *data, int datalen,
+				void *ecc, int ecclen,
+				void *extraoob, int extraooblen,
+				int threshold);
 #endif /* __LINUX_MTD_NAND_H */