diff options
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/blktrans.h | 3 | ||||
| -rw-r--r-- | include/linux/mtd/cfi.h | 3 | ||||
| -rw-r--r-- | include/linux/mtd/latch-addr-flash.h | 29 | ||||
| -rw-r--r-- | include/linux/mtd/nand.h | 9 | ||||
| -rw-r--r-- | include/linux/mtd/nand_bch.h | 72 | ||||
| -rw-r--r-- | include/linux/mtd/onenand.h | 1 | ||||
| -rw-r--r-- | include/linux/mtd/onenand_regs.h | 1 | ||||
| -rw-r--r-- | include/linux/mtd/ubi.h | 22 | ||||
| -rw-r--r-- | include/linux/mtd/xip.h | 2 |
9 files changed, 137 insertions, 5 deletions
diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index 26529ebd59c..1bbd9f28924 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 a9baee6864a..d2492549297 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. @@ -535,6 +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/latch-addr-flash.h b/include/linux/mtd/latch-addr-flash.h new file mode 100644 index 00000000000..e94b8e12807 --- /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/nand.h b/include/linux/mtd/nand.h index 1f489b247a2..d44192740f6 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 diff --git a/include/linux/mtd/nand_bch.h b/include/linux/mtd/nand_bch.h new file mode 100644 index 00000000000..74acf536755 --- /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 ae418e41d8f..52b6f187bf4 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -198,6 +198,7 @@ struct onenand_chip { #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 cd6f3b43119..d60130f88ee 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/ubi.h b/include/linux/mtd/ubi.h index b31bd9e9bca..84854edf443 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 36efcba15ec..abed4dec5c2 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. |