12 files changed, 170 insertions, 30 deletions

diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h
index 26529ebd59cc..1bbd9f289245 100644
--- a/include/linux/mtd/blktrans.h
+++ b/include/linux/mtd/blktrans.h
@@ -36,6 +36,7 @@ struct mtd_blktrans_dev {
         struct mtd_info *mtd;
         struct mutex lock;
         int devnum;
+        bool bg_stop;
         unsigned long size;
         int readonly;
         int open;
@@ -62,6 +63,7 @@ struct mtd_blktrans_ops {
                      unsigned long block, char *buffer);
         int (*discard)(struct mtd_blktrans_dev *dev,
                        unsigned long block, unsigned nr_blocks);
+        void (*background)(struct mtd_blktrans_dev *dev);
 
         /* Block layer ioctls */
         int (*getgeo)(struct mtd_blktrans_dev *dev, struct hd_geometry *geo);
@@ -85,6 +87,7 @@ extern int register_mtd_blktrans(struct mtd_blktrans_ops *tr);
 extern int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr);
 extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
 extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
+extern int mtd_blktrans_cease_background(struct mtd_blktrans_dev *dev);
 
 
 #endif /* __MTD_TRANS_H__ */
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index 4dd0c2cd7659..d24925492972 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -308,7 +308,7 @@ static inline uint32_t cfi_build_cmd_addr(uint32_t cmd_ofs,
         
         addr = (cmd_ofs * type) * interleave;
 
-        /* Modify the unlock address if we are in compatiblity mode.
+        /* Modify the unlock address if we are in compatibility mode.
          * For 16bit devices on 8 bit busses
          * and 32bit devices on 16 bit busses
          * set the low bit of the alternating bit sequence of the address.
@@ -527,8 +527,7 @@ struct cfi_extquery *cfi_read_pri(struct map_info *map, uint16_t adr, uint16_t s
 struct cfi_fixup {
         uint16_t mfr;
         uint16_t id;
-        void (*fixup)(struct mtd_info *mtd, void* param);
-        void* param;
+        void (*fixup)(struct mtd_info *mtd);
 };
 
 #define CFI_MFR_ANY             0xFFFF
@@ -536,6 +535,7 @@ struct cfi_fixup {
 #define CFI_MFR_CONTINUATION    0x007F
 
 #define CFI_MFR_AMD             0x0001
+#define CFI_MFR_AMIC            0x0037
 #define CFI_MFR_ATMEL           0x001F
 #define CFI_MFR_EON             0x001C
 #define CFI_MFR_FUJITSU         0x0004
diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h
index 5d2556700ec2..6987995ad3cf 100644
--- a/include/linux/mtd/fsmc.h
+++ b/include/linux/mtd/fsmc.h
@@ -16,6 +16,7 @@
 #ifndef __MTD_FSMC_H
 #define __MTD_FSMC_H
 
+#include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/mtd/physmap.h>
 #include <linux/types.h>
@@ -27,7 +28,7 @@
 
 /*
  * The placement of the Command Latch Enable (CLE) and
- * Address Latch Enable (ALE) is twised around in the
+ * Address Latch Enable (ALE) is twisted around in the
  * SPEAR310 implementation.
  */
 #if defined(CONFIG_MACH_SPEAR310)
@@ -62,7 +63,7 @@ struct fsmc_nor_bank_regs {
 
 /* ctrl_tim register definitions */
 
-struct fsms_nand_bank_regs {
+struct fsmc_nand_bank_regs {
         uint32_t pc;
         uint32_t sts;
         uint32_t comm;
@@ -78,7 +79,7 @@ struct fsms_nand_bank_regs {
 struct fsmc_regs {
         struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS];
         uint8_t reserved_1[0x40 - 0x20];
-        struct fsms_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS];
+        struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS];
         uint8_t reserved_2[0xfe0 - 0xc0];
         uint32_t peripid0;                      /* 0xfe0 */
         uint32_t peripid1;                      /* 0xfe4 */
@@ -114,25 +115,6 @@ struct fsmc_regs {
 #define FSMC_THOLD_4            (4 << 16)
 #define FSMC_THIZ_1             (1 << 24)
 
-/* peripid2 register definitions */
-#define FSMC_REVISION_MSK       (0xf)
-#define FSMC_REVISION_SHFT      (0x4)
-
-#define FSMC_VER1               1
-#define FSMC_VER2               2
-#define FSMC_VER3               3
-#define FSMC_VER4               4
-#define FSMC_VER5               5
-#define FSMC_VER6               6
-#define FSMC_VER7               7
-#define FSMC_VER8               8
-
-static inline uint32_t get_fsmc_version(struct fsmc_regs *regs)
-{
-        return (readl(&regs->peripid2) >> FSMC_REVISION_SHFT) &
-                                FSMC_REVISION_MSK;
-}
-
 /*
  * There are 13 bytes of ecc for every 512 byte block in FSMC version 8
  * and it has to be read consecutively and immediately after the 512
diff --git a/include/linux/mtd/latch-addr-flash.h b/include/linux/mtd/latch-addr-flash.h
new file mode 100644
index 000000000000..e94b8e128074
--- /dev/null
+++ b/include/linux/mtd/latch-addr-flash.h
@@ -0,0 +1,29 @@
+/*
+ * Interface for NOR flash driver whose high address lines are latched
+ *
+ * Copyright © 2008 MontaVista Software, Inc. <source@mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+#ifndef __LATCH_ADDR_FLASH__
+#define __LATCH_ADDR_FLASH__
+
+struct map_info;
+struct mtd_partition;
+
+struct latch_addr_flash_data {
+        unsigned int            width;
+        unsigned int            size;
+
+        int                     (*init)(void *data, int cs);
+        void                    (*done)(void *data);
+        void                    (*set_window)(unsigned long offset, void *data);
+        void                    *data;
+
+        unsigned int            nr_parts;
+        struct mtd_partition    *parts;
+};
+
+#endif
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index fe8d77ebec13..9d5306bad117 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -144,6 +144,17 @@ struct mtd_info {
          */
         uint32_t writesize;
 
+        /*
+         * Size of the write buffer used by the MTD. MTD devices having a write
+         * buffer can write multiple writesize chunks at a time. E.g. while
+         * writing 4 * writesize bytes to a device with 2 * writesize bytes
+         * buffer the MTD driver can (but doesn't have to) do 2 writesize
+         * operations, but not 4. Currently, all NANDs have writebufsize
+         * equivalent to writesize (NAND page size). Some NOR flashes do have
+         * writebufsize greater than writesize.
+         */
+        uint32_t writebufsize;
+
         uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         uint32_t oobavail;  // Available OOB bytes per block
 
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 63e17d01fde9..d44192740f6f 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -140,6 +140,7 @@ typedef enum {
         NAND_ECC_HW,
         NAND_ECC_HW_SYNDROME,
         NAND_ECC_HW_OOB_FIRST,
+        NAND_ECC_SOFT_BCH,
 } nand_ecc_modes_t;
 
 /*
@@ -339,6 +340,7 @@ struct nand_hw_control {
  * @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
  *              be provided if an hardware ECC is available
  * @calculate:  function for ecc calculation or readback from ecc hardware
@@ -362,6 +364,7 @@ struct nand_ecc_ctrl {
         int prepad;
         int postpad;
         struct nand_ecclayout   *layout;
+        void *priv;
         void (*hwctl)(struct mtd_info *mtd, int mode);
         int (*calculate)(struct mtd_info *mtd, const uint8_t *dat,
                         uint8_t *ecc_code);
@@ -413,9 +416,9 @@ struct nand_buffers {
  * @select_chip:        [REPLACEABLE] select chip nr
  * @block_bad:          [REPLACEABLE] check, if the block is bad
  * @block_markbad:      [REPLACEABLE] mark the block bad
- * @cmd_ctrl:           [BOARDSPECIFIC] hardwarespecific funtion for controlling
+ * @cmd_ctrl:           [BOARDSPECIFIC] hardwarespecific function for controlling
  *                      ALE/CLE/nCE. Also used to write command and address
- * @init_size:          [BOARDSPECIFIC] hardwarespecific funtion for setting
+ * @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.
@@ -434,7 +437,7 @@ struct nand_buffers {
  * @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 transfering
+ * @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
@@ -448,6 +451,8 @@ struct nand_buffers {
  *                      See the defines for further explanation.
  * @badblockpos:        [INTERN] position of the bad block marker in the oob
  *                      area.
+ * @badblockbits:       [INTERN] number of bits to left-shift the bad block
+ *                      number
  * @cellinfo:           [INTERN] MLC/multichip data from chip ident
  * @numchips:           [INTERN] number of physical chips
  * @chipsize:           [INTERN] the size of one chip for multichip arrays
diff --git a/include/linux/mtd/nand_bch.h b/include/linux/mtd/nand_bch.h
new file mode 100644
index 000000000000..74acf5367556
--- /dev/null
+++ b/include/linux/mtd/nand_bch.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright © 2011 Ivan Djelic <ivan.djelic@parrot.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This file is the header for the NAND BCH ECC implementation.
+ */
+
+#ifndef __MTD_NAND_BCH_H__
+#define __MTD_NAND_BCH_H__
+
+struct mtd_info;
+struct nand_bch_control;
+
+#if defined(CONFIG_MTD_NAND_ECC_BCH)
+
+static inline int mtd_nand_has_bch(void) { return 1; }
+
+/*
+ * Calculate BCH ecc code
+ */
+int nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
+                           u_char *ecc_code);
+
+/*
+ * Detect and correct bit errors
+ */
+int nand_bch_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc,
+                          u_char *calc_ecc);
+/*
+ * Initialize BCH encoder/decoder
+ */
+struct nand_bch_control *
+nand_bch_init(struct mtd_info *mtd, unsigned int eccsize,
+              unsigned int eccbytes, struct nand_ecclayout **ecclayout);
+/*
+ * Release BCH encoder/decoder resources
+ */
+void nand_bch_free(struct nand_bch_control *nbc);
+
+#else /* !CONFIG_MTD_NAND_ECC_BCH */
+
+static inline int mtd_nand_has_bch(void) { return 0; }
+
+static inline int
+nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
+                       u_char *ecc_code)
+{
+        return -1;
+}
+
+static inline int
+nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf,
+                      unsigned char *read_ecc, unsigned char *calc_ecc)
+{
+        return -1;
+}
+
+static inline struct nand_bch_control *
+nand_bch_init(struct mtd_info *mtd, unsigned int eccsize,
+              unsigned int eccbytes, struct nand_ecclayout **ecclayout)
+{
+        return NULL;
+}
+
+static inline void nand_bch_free(struct nand_bch_control *nbc) {}
+
+#endif /* CONFIG_MTD_NAND_ECC_BCH */
+
+#endif /* __MTD_NAND_BCH_H__ */
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 0c8815bfae1c..52b6f187bf49 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -118,6 +118,8 @@ struct onenand_chip {
         int (*chip_probe)(struct mtd_info *mtd);
         int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
         int (*scan_bbt)(struct mtd_info *mtd);
+        int (*enable)(struct mtd_info *mtd);
+        int (*disable)(struct mtd_info *mtd);
 
         struct completion       complete;
         int                     irq;
@@ -137,6 +139,14 @@ struct onenand_chip {
         void                    *bbm;
 
         void                    *priv;
+
+        /*
+         * Shows that the current operation is composed
+         * of sequence of commands. For example, cache program.
+         * Such command status OnGo bit is checked at the end of
+         * sequence.
+         */
+        unsigned int            ongoing;
 };
 
 /*
@@ -171,6 +181,9 @@ struct onenand_chip {
 #define ONENAND_IS_2PLANE(this)                 (0)
 #endif
 
+#define ONENAND_IS_CACHE_PROGRAM(this)                                  \
+        (this->options & ONENAND_HAS_CACHE_PROGRAM)
+
 /* Check byte access in OneNAND */
 #define ONENAND_CHECK_BYTE_ACCESS(addr)         (addr & 0x1)
 
@@ -181,9 +194,11 @@ struct onenand_chip {
 #define ONENAND_HAS_UNLOCK_ALL          (0x0002)
 #define ONENAND_HAS_2PLANE              (0x0004)
 #define ONENAND_HAS_4KB_PAGE            (0x0008)
+#define ONENAND_HAS_CACHE_PROGRAM       (0x0010)
 #define ONENAND_SKIP_UNLOCK_CHECK       (0x0100)
 #define ONENAND_PAGEBUF_ALLOC           (0x1000)
 #define ONENAND_OOBBUF_ALLOC            (0x2000)
+#define ONENAND_SKIP_INITIAL_UNLOCKING  (0x4000)
 
 #define ONENAND_IS_4KB_PAGE(this)                                       \
         (this->options & ONENAND_HAS_4KB_PAGE)
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index cd6f3b431195..d60130f88eed 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -168,6 +168,7 @@
 #define ONENAND_SYS_CFG1_INT            (1 << 6)
 #define ONENAND_SYS_CFG1_IOBE           (1 << 5)
 #define ONENAND_SYS_CFG1_RDY_CONF       (1 << 4)
+#define ONENAND_SYS_CFG1_VHF            (1 << 3)
 #define ONENAND_SYS_CFG1_HF             (1 << 2)
 #define ONENAND_SYS_CFG1_SYNC_WRITE     (1 << 1)
 
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index 2b54316591d2..4a0a8ba90a72 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -89,7 +89,7 @@ static inline int mtd_has_cmdlinepart(void) { return 1; }
 static inline int mtd_has_cmdlinepart(void) { return 0; }
 #endif
 
-int mtd_is_master(struct mtd_info *mtd);
+int mtd_is_partition(struct mtd_info *mtd);
 int mtd_add_partition(struct mtd_info *master, char *name,
                       long long offset, long long length);
 int mtd_del_partition(struct mtd_info *master, int partno);
diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h
index b31bd9e9bca3..84854edf4436 100644
--- a/include/linux/mtd/ubi.h
+++ b/include/linux/mtd/ubi.h
@@ -116,18 +116,40 @@ struct ubi_volume_info {
  * struct ubi_device_info - UBI device description data structure.
  * @ubi_num: ubi device number
  * @leb_size: logical eraseblock size on this UBI device
+ * @leb_start: starting offset of logical eraseblocks within physical
+ *             eraseblocks
  * @min_io_size: minimal I/O unit size
+ * @max_write_size: maximum amount of bytes the underlying flash can write at a
+ *                  time (MTD write buffer size)
  * @ro_mode: if this device is in read-only mode
  * @cdev: UBI character device major and minor numbers
  *
  * Note, @leb_size is the logical eraseblock size offered by the UBI device.
  * Volumes of this UBI device may have smaller logical eraseblock size if their
  * alignment is not equivalent to %1.
+ *
+ * The @max_write_size field describes flash write maximum write unit. For
+ * example, NOR flash allows for changing individual bytes, so @min_io_size is
+ * %1. However, it does not mean than NOR flash has to write data byte-by-byte.
+ * Instead, CFI NOR flashes have a write-buffer of, e.g., 64 bytes, and when
+ * writing large chunks of data, they write 64-bytes at a time. Obviously, this
+ * improves write throughput.
+ *
+ * Also, the MTD device may have N interleaved (striped) flash chips
+ * underneath, in which case @min_io_size can be physical min. I/O size of
+ * single flash chip, while @max_write_size can be N * @min_io_size.
+ *
+ * The @max_write_size field is always greater or equivalent to @min_io_size.
+ * E.g., some NOR flashes may have (@min_io_size = 1, @max_write_size = 64). In
+ * contrast, NAND flashes usually have @min_io_size = @max_write_size = NAND
+ * page size.
  */
 struct ubi_device_info {
         int ubi_num;
         int leb_size;
+        int leb_start;
         int min_io_size;
+        int max_write_size;
         int ro_mode;
         dev_t cdev;
 };
diff --git a/include/linux/mtd/xip.h b/include/linux/mtd/xip.h
index 36efcba15ecd..abed4dec5c2f 100644
--- a/include/linux/mtd/xip.h
+++ b/include/linux/mtd/xip.h
@@ -51,7 +51,7 @@
  *      return in usecs the elapsed timebetween now and the reference x as
  *      returned by xip_currtime().
  *
- *      note 1: convertion to usec can be approximated, as long as the
+ *      note 1: conversion to usec can be approximated, as long as the
  *              returned value is <= the real elapsed time.
  *      note 2: this should be able to cope with a few seconds without
  *              overflowing.