4 files changed, 170 insertions, 32 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 8cc0e2fb6894..a1b0b4c8fd79 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -204,12 +204,12 @@ struct mtd_info {
                           struct mtd_oob_ops *ops);
         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 (*_get_fact_prot_info) (struct mtd_info *mtd, size_t len,
+                                    size_t *retlen, struct otp_info *buf);
         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 (*_get_user_prot_info) (struct mtd_info *mtd, size_t len,
+                                    size_t *retlen, struct otp_info *buf);
         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,
@@ -278,12 +278,12 @@ static inline int mtd_write_oob(struct mtd_info *mtd, loff_t to,
         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_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
+                           struct otp_info *buf);
 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_get_user_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
+                           struct otp_info *buf);
 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,
diff --git a/include/linux/mtd/mtdram.h b/include/linux/mtd/mtdram.h
index 68891313875d..628a6a21ddf0 100644
--- a/include/linux/mtd/mtdram.h
+++ b/include/linux/mtd/mtdram.h
@@ -3,6 +3,6 @@
 
 #include <linux/mtd/mtd.h>
 int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
-                        unsigned long size, char *name);
+                        unsigned long size, const char *name);
 
 #endif /* __MTD_MTDRAM_H__ */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 9e6c8f9f306e..450d61ec7f06 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -52,14 +52,6 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 #define NAND_MAX_CHIPS          8
 
 /*
- * This constant declares the max. oobsize / page, which
- * is supported now. If you add a chip with bigger oobsize/page
- * adjust this accordingly.
- */
-#define NAND_MAX_OOBSIZE        744
-#define NAND_MAX_PAGESIZE       8192
-
-/*
  * Constants for hardware specific CLE/ALE/NCE function
  *
  * These are bits which can be or'ed to set/clear multiple
@@ -219,6 +211,9 @@ struct nand_chip;
 /* ONFI feature address */
 #define ONFI_FEATURE_ADDR_TIMING_MODE   0x1
 
+/* Vendor-specific feature address (Micron) */
+#define ONFI_FEATURE_ADDR_READ_RETRY    0x89
+
 /* ONFI subfeature parameters length */
 #define ONFI_SUBFEATURE_PARAM_LEN       4
 
@@ -279,16 +274,17 @@ struct nand_onfi_params {
         __le16 io_pin_capacitance_typ;
         __le16 input_pin_capacitance_typ;
         u8 input_pin_capacitance_max;
-        u8 driver_strenght_support;
+        u8 driver_strength_support;
         __le16 t_int_r;
         __le16 t_ald;
         u8 reserved4[7];
 
         /* vendor */
-        u8 reserved5[90];
+        __le16 vendor_revision;
+        u8 vendor[88];
 
         __le16 crc;
-} __attribute__((packed));
+} __packed;
 
 #define ONFI_CRC_BASE   0x4F4E
 
@@ -326,6 +322,104 @@ struct onfi_ext_param_page {
          */
 } __packed;
 
+struct nand_onfi_vendor_micron {
+        u8 two_plane_read;
+        u8 read_cache;
+        u8 read_unique_id;
+        u8 dq_imped;
+        u8 dq_imped_num_settings;
+        u8 dq_imped_feat_addr;
+        u8 rb_pulldown_strength;
+        u8 rb_pulldown_strength_feat_addr;
+        u8 rb_pulldown_strength_num_settings;
+        u8 otp_mode;
+        u8 otp_page_start;
+        u8 otp_data_prot_addr;
+        u8 otp_num_pages;
+        u8 otp_feat_addr;
+        u8 read_retry_options;
+        u8 reserved[72];
+        u8 param_revision;
+} __packed;
+
+struct jedec_ecc_info {
+        u8 ecc_bits;
+        u8 codeword_size;
+        __le16 bb_per_lun;
+        __le16 block_endurance;
+        u8 reserved[2];
+} __packed;
+
+/* JEDEC features */
+#define JEDEC_FEATURE_16_BIT_BUS        (1 << 0)
+
+struct nand_jedec_params {
+        /* rev info and features block */
+        /* 'J' 'E' 'S' 'D'  */
+        u8 sig[4];
+        __le16 revision;
+        __le16 features;
+        u8 opt_cmd[3];
+        __le16 sec_cmd;
+        u8 num_of_param_pages;
+        u8 reserved0[18];
+
+        /* manufacturer information block */
+        char manufacturer[12];
+        char model[20];
+        u8 jedec_id[6];
+        u8 reserved1[10];
+
+        /* memory organization block */
+        __le32 byte_per_page;
+        __le16 spare_bytes_per_page;
+        u8 reserved2[6];
+        __le32 pages_per_block;
+        __le32 blocks_per_lun;
+        u8 lun_count;
+        u8 addr_cycles;
+        u8 bits_per_cell;
+        u8 programs_per_page;
+        u8 multi_plane_addr;
+        u8 multi_plane_op_attr;
+        u8 reserved3[38];
+
+        /* electrical parameter block */
+        __le16 async_sdr_speed_grade;
+        __le16 toggle_ddr_speed_grade;
+        __le16 sync_ddr_speed_grade;
+        u8 async_sdr_features;
+        u8 toggle_ddr_features;
+        u8 sync_ddr_features;
+        __le16 t_prog;
+        __le16 t_bers;
+        __le16 t_r;
+        __le16 t_r_multi_plane;
+        __le16 t_ccs;
+        __le16 io_pin_capacitance_typ;
+        __le16 input_pin_capacitance_typ;
+        __le16 clk_pin_capacitance_typ;
+        u8 driver_strength_support;
+        __le16 t_ald;
+        u8 reserved4[36];
+
+        /* ECC and endurance block */
+        u8 guaranteed_good_blocks;
+        __le16 guaranteed_block_endurance;
+        struct jedec_ecc_info ecc_info[4];
+        u8 reserved5[29];
+
+        /* reserved */
+        u8 reserved6[148];
+
+        /* vendor */
+        __le16 vendor_rev_num;
+        u8 reserved7[88];
+
+        /* CRC for Parameter Page */
+        __le16 crc;
+} __packed;
+
 /**
  * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independent devices
  * @lock:               protection lock
@@ -394,7 +488,7 @@ struct nand_ecc_ctrl {
         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);
+                        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);
@@ -411,17 +505,17 @@ struct nand_ecc_ctrl {
 
 /**
  * struct nand_buffers - buffer structure for read/write
- * @ecccalc:    buffer for calculated ECC
- * @ecccode:    buffer for ECC read from flash
- * @databuf:    buffer for data - dynamically sized
+ * @ecccalc:    buffer pointer for calculated ECC, size is oobsize.
+ * @ecccode:    buffer pointer for ECC read from flash, size is oobsize.
+ * @databuf:    buffer pointer for data, size is (page size + oobsize).
  *
  * Do not change the order of buffers. databuf and oobrbuf must be in
  * consecutive order.
  */
 struct nand_buffers {
-        uint8_t ecccalc[NAND_MAX_OOBSIZE];
-        uint8_t ecccode[NAND_MAX_OOBSIZE];
-        uint8_t databuf[NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE];
+        uint8_t *ecccalc;
+        uint8_t *ecccode;
+        uint8_t *databuf;
 };
 
 /**
@@ -432,6 +526,8 @@ struct nand_buffers {
  *                      flash device.
  * @read_byte:          [REPLACEABLE] read one byte from the chip
  * @read_word:          [REPLACEABLE] read one word from the chip
+ * @write_byte:         [REPLACEABLE] write a single byte to the chip on the
+ *                      low 8 I/O lines
  * @write_buf:          [REPLACEABLE] write data from the buffer to the chip
  * @read_buf:           [REPLACEABLE] read data from the chip into the buffer
  * @select_chip:        [REPLACEABLE] select chip nr
@@ -451,6 +547,8 @@ struct nand_buffers {
  *                      commands to the chip.
  * @waitfunc:           [REPLACEABLE] hardwarespecific function for wait on
  *                      ready.
+ * @setup_read_retry:   [FLASHSPECIFIC] flash (vendor) specific function for
+ *                      setting the read-retry mode. Mostly needed for MLC NAND.
  * @ecc:                [BOARDSPECIFIC] ECC control structure
  * @buffers:            buffer structure for read/write
  * @hwcontrol:          platform-specific hardware control structure
@@ -495,8 +593,13 @@ struct nand_buffers {
  * @subpagesize:        [INTERN] holds the subpagesize
  * @onfi_version:       [INTERN] holds the chip ONFI version (BCD encoded),
  *                      non 0 if ONFI supported.
+ * @jedec_version:      [INTERN] holds the chip JEDEC version (BCD encoded),
+ *                      non 0 if JEDEC supported.
  * @onfi_params:        [INTERN] holds the ONFI page parameter when ONFI is
  *                      supported, 0 otherwise.
+ * @jedec_params:       [INTERN] holds the JEDEC parameter page when JEDEC is
+ *                      supported, 0 otherwise.
+ * @read_retries:       [INTERN] the number of read retry modes supported
  * @onfi_set_features:  [REPLACEABLE] set the features for ONFI nand
  * @onfi_get_features:  [REPLACEABLE] get the features for ONFI nand
  * @bbt:                [INTERN] bad block table pointer
@@ -521,6 +624,7 @@ struct nand_chip {
 
         uint8_t (*read_byte)(struct mtd_info *mtd);
         u16 (*read_word)(struct mtd_info *mtd);
+        void (*write_byte)(struct mtd_info *mtd, uint8_t byte);
         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);
@@ -544,6 +648,7 @@ struct nand_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 (*setup_read_retry)(struct mtd_info *mtd, int retry_mode);
 
         int chip_delay;
         unsigned int options;
@@ -566,7 +671,13 @@ struct nand_chip {
         int badblockbits;
 
         int onfi_version;
-        struct nand_onfi_params onfi_params;
+        int jedec_version;
+        union {
+                struct nand_onfi_params onfi_params;
+                struct nand_jedec_params jedec_params;
+        };
+
+        int read_retries;
 
         flstate_t state;
 
@@ -600,6 +711,8 @@ struct nand_chip {
 #define NAND_MFR_AMD            0x01
 #define NAND_MFR_MACRONIX       0xc2
 #define NAND_MFR_EON            0x92
+#define NAND_MFR_SANDISK        0x45
+#define NAND_MFR_INTEL          0x89
 
 /* The maximum expected count of bytes in the NAND ID sequence */
 #define NAND_MAX_ID_LEN 8
@@ -805,4 +918,29 @@ static inline bool nand_is_slc(struct nand_chip *chip)
 {
         return chip->bits_per_cell == 1;
 }
+
+/**
+ * Check if the opcode's address should be sent only on the lower 8 bits
+ * @command: opcode to check
+ */
+static inline int nand_opcode_8bits(unsigned int command)
+{
+        switch (command) {
+        case NAND_CMD_READID:
+        case NAND_CMD_PARAM:
+        case NAND_CMD_GET_FEATURES:
+        case NAND_CMD_SET_FEATURES:
+                return 1;
+        default:
+                break;
+        }
+        return 0;
+}
+
+/* return the supported JEDEC features. */
+static inline int jedec_feature(struct nand_chip *chip)
+{
+        return chip->jedec_version ? le16_to_cpu(chip->jedec_params.features)
+                : 0;
+}
 #endif /* __LINUX_MTD_NAND_H */
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index 1f8d24bdafda..6a35e6de5da1 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -37,7 +37,7 @@
  */
 
 struct mtd_partition {
-        char *name;                     /* identifier string */
+        const char *name;               /* identifier string */
         uint64_t size;                  /* partition size */
         uint64_t offset;                /* offset within the master MTD space */
         uint32_t mask_flags;            /* master MTD flags to mask out for this partition */
@@ -76,11 +76,11 @@ struct mtd_part_parser {
                         struct mtd_part_parser_data *);
 };
 
-extern int register_mtd_parser(struct mtd_part_parser *parser);
-extern int deregister_mtd_parser(struct mtd_part_parser *parser);
+extern void register_mtd_parser(struct mtd_part_parser *parser);
+extern void deregister_mtd_parser(struct mtd_part_parser *parser);
 
 int mtd_is_partition(const struct mtd_info *mtd);
-int mtd_add_partition(struct mtd_info *master, char *name,
+int mtd_add_partition(struct mtd_info *master, const char *name,
                       long long offset, long long length);
 int mtd_del_partition(struct mtd_info *master, int partno);
 uint64_t mtd_get_device_size(const struct mtd_info *mtd);