From: Boris Brezillon Date: Fri, 1 Sep 2017 13:34:30 +0000 (+0200) Subject: Merge tag 'nand/for-4.14' of git://git.infradead.org/l2-mtd into mtd/next X-Git-Tag: MMI-PSA29.97-13-9~4762^2 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d1f936d73683a540227cca3aaecdb68b6c3d53c5;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git Merge tag 'nand/for-4.14' of git://git.infradead.org/l2-mtd into mtd/next From Boris: " This pull request contains the following core changes: * Fix memory leaks in the core * Remove unused NAND locking support * Rename nand.h into rawnand.h (preparing support for spi NANDs) * Use NAND_MAX_ID_LEN where appropriate * Fix support for 20nm Hynix chips * Fix support for Samsung and Hynix SLC NANDs and the following driver changes: * Various cleanup, improvements and fixes in the qcom driver * Fixes for bugs detected by various static code analysis tools * Fix mxc ooblayout definition * Add a new part_parsers to tmio and sharpsl platform data in order to define a custom list of partition parsers * Request the reset line in exclusive mode in the sunxi driver * Fix a build error in the orion-nand driver when compiled for ARMv4 * Allow 64-bit mvebu platforms to select the PXA3XX driver " --- d1f936d73683a540227cca3aaecdb68b6c3d53c5 diff --cc MAINTAINERS index 1c3feffb1c1c,bffb38373550..1c0cc17f4854 --- a/MAINTAINERS +++ b/MAINTAINERS @@@ -9027,8 -9034,12 +9027,8 @@@ T: git git://git.infradead.org/linux-mt T: git git://git.infradead.org/l2-mtd.git nand/next S: Maintained F: drivers/mtd/nand/ - F: include/linux/mtd/nand*.h + F: include/linux/mtd/*nand*.h -NATSEMI ETHERNET DRIVER (DP8381x) -S: Orphan -F: drivers/net/ethernet/natsemi/natsemi.c - NATIVE INSTRUMENTS USB SOUND INTERFACE DRIVER M: Daniel Mack S: Maintained diff --cc include/linux/mtd/rawnand.h index 000000000000,c433f093766a..2b05f4273bab mode 000000,100644..100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@@ -1,0 -1,1321 +1,1321 @@@ + /* + * Copyright © 2000-2010 David Woodhouse + * Steven J. Hill + * Thomas Gleixner + * + * 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. + * + * Info: + * Contains standard defines and IDs for NAND flash devices + * + * Changelog: + * See git changelog. + */ + #ifndef __LINUX_MTD_RAWNAND_H + #define __LINUX_MTD_RAWNAND_H + + #include + #include + #include + #include + #include + + struct mtd_info; + struct nand_flash_dev; + struct device_node; + + /* Scan and identify a NAND device */ + int nand_scan(struct mtd_info *mtd, int max_chips); + /* + * Separate phases of nand_scan(), allowing board driver to intervene + * and override command or ECC setup according to flash type. + */ + int nand_scan_ident(struct mtd_info *mtd, int max_chips, + struct nand_flash_dev *table); + int nand_scan_tail(struct mtd_info *mtd); + + /* Unregister the MTD device and free resources held by the NAND device */ + void nand_release(struct mtd_info *mtd); + + /* Internal helper for board drivers which need to override command function */ + void nand_wait_ready(struct mtd_info *mtd); + + /* The maximum number of NAND chips in an array */ + #define NAND_MAX_CHIPS 8 + + /* + * Constants for hardware specific CLE/ALE/NCE function + * + * These are bits which can be or'ed to set/clear multiple + * bits in one go. + */ + /* Select the chip by setting nCE to low */ + #define NAND_NCE 0x01 + /* Select the command latch by setting CLE to high */ + #define NAND_CLE 0x02 + /* Select the address latch by setting ALE to high */ + #define NAND_ALE 0x04 + + #define NAND_CTRL_CLE (NAND_NCE | NAND_CLE) + #define NAND_CTRL_ALE (NAND_NCE | NAND_ALE) + #define NAND_CTRL_CHANGE 0x80 + + /* + * Standard NAND flash commands + */ + #define NAND_CMD_READ0 0 + #define NAND_CMD_READ1 1 + #define NAND_CMD_RNDOUT 5 + #define NAND_CMD_PAGEPROG 0x10 + #define NAND_CMD_READOOB 0x50 + #define NAND_CMD_ERASE1 0x60 + #define NAND_CMD_STATUS 0x70 + #define NAND_CMD_SEQIN 0x80 + #define NAND_CMD_RNDIN 0x85 + #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 + + /* Extended commands for large page devices */ + #define NAND_CMD_READSTART 0x30 + #define NAND_CMD_RNDOUTSTART 0xE0 + #define NAND_CMD_CACHEDPROG 0x15 + + #define NAND_CMD_NONE -1 + + /* Status bits */ + #define NAND_STATUS_FAIL 0x01 + #define NAND_STATUS_FAIL_N1 0x02 + #define NAND_STATUS_TRUE_READY 0x20 + #define NAND_STATUS_READY 0x40 + #define NAND_STATUS_WP 0x80 + + #define NAND_DATA_IFACE_CHECK_ONLY -1 + + /* + * Constants for ECC_MODES + */ + typedef enum { + NAND_ECC_NONE, + NAND_ECC_SOFT, + NAND_ECC_HW, + NAND_ECC_HW_SYNDROME, + NAND_ECC_HW_OOB_FIRST, + NAND_ECC_ON_DIE, + } nand_ecc_modes_t; + + enum nand_ecc_algo { + NAND_ECC_UNKNOWN, + NAND_ECC_HAMMING, + NAND_ECC_BCH, + }; + + /* + * Constants for Hardware ECC + */ + /* Reset Hardware ECC for read */ + #define NAND_ECC_READ 0 + /* Reset Hardware ECC for write */ + #define NAND_ECC_WRITE 1 + /* 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) + #define NAND_ECC_MAXIMIZE BIT(1) + /* + * If your controller already sends the required NAND commands when + * reading or writing a page, then the framework is not supposed to + * send READ0 and SEQIN/PAGEPROG respectively. + */ + #define NAND_ECC_CUSTOM_PAGE_ACCESS BIT(2) + + /* Bit mask for flags passed to do_nand_read_ecc */ + #define NAND_GET_DEVICE 0x80 + + + /* + * Option constants for bizarre disfunctionality and real + * features. + */ + /* Buswidth is 16 bit */ + #define NAND_BUSWIDTH_16 0x00000002 + /* Chip has cache program function */ + #define NAND_CACHEPRG 0x00000008 + /* + * Chip requires ready check on read (for auto-incremented sequential read). + * True only for small page devices; large page devices do not support + * autoincrement. + */ + #define NAND_NEED_READRDY 0x00000100 + + /* Chip does not allow subpage writes */ + #define NAND_NO_SUBPAGE_WRITE 0x00000200 + + /* Device is one of 'new' xD cards that expose fake nand command set */ + #define NAND_BROKEN_XD 0x00000400 + + /* Device behaves just like nand, but is readonly */ + #define NAND_ROM 0x00000800 + + /* 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 + + /* Macros to identify the above */ + #define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG)) + #define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ)) + #define NAND_HAS_SUBPAGE_WRITE(chip) !((chip)->options & NAND_NO_SUBPAGE_WRITE) + + /* Non chip related options */ + /* This option skips the bbt scan during initialization. */ + #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 0x00020000 + /* Chip may not exist, so silence any errors in scan */ + #define NAND_SCAN_SILENT_NODEV 0x00040000 + /* + * Autodetect nand buswidth with readid/onfi. + * This suppose the driver will configure the hardware in 8 bits mode + * when calling nand_scan_ident, and update its configuration + * 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 + + /* + * In case your controller is implementing ->cmd_ctrl() and is relying on the + * default ->cmdfunc() implementation, you may want to let the core handle the + * tCCS delay which is required when a column change (RNDIN or RNDOUT) is + * requested. + * If your controller already takes care of this delay, you don't need to set + * this flag. + */ + #define NAND_WAIT_TCCS 0x00200000 + + /* Options set by nand scan */ + /* Nand scan has allocated controller struct */ + #define NAND_CONTROLLER_ALLOC 0x80000000 + + /* Cell info constants */ + #define NAND_CI_CHIPNR_MSK 0x03 + #define NAND_CI_CELLTYPE_MSK 0x0C + #define NAND_CI_CELLTYPE_SHIFT 2 + + /* Keep gcc happy */ + struct nand_chip; + + /* ONFI features */ + #define ONFI_FEATURE_16_BIT_BUS (1 << 0) + #define ONFI_FEATURE_EXT_PARAM_PAGE (1 << 7) + + /* 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 + + /* Vendor-specific feature address (Micron) */ + #define ONFI_FEATURE_ADDR_READ_RETRY 0x89 + #define ONFI_FEATURE_ON_DIE_ECC 0x90 + #define ONFI_FEATURE_ON_DIE_ECC_EN BIT(3) + + /* ONFI subfeature parameters length */ + #define ONFI_SUBFEATURE_PARAM_LEN 4 + + /* ONFI optional commands SET/GET FEATURES supported? */ + #define ONFI_OPT_CMD_SET_GET_FEATURES (1 << 2) + + struct nand_onfi_params { + /* rev info and features block */ + /* 'O' 'N' 'F' 'I' */ + u8 sig[4]; + __le16 revision; + __le16 features; + __le16 opt_cmd; + u8 reserved0[2]; + __le16 ext_param_page_length; /* since ONFI 2.1 */ + u8 num_of_param_pages; /* since ONFI 2.1 */ + u8 reserved1[17]; + + /* manufacturer information block */ + char manufacturer[12]; + char model[20]; + u8 jedec_id; + __le16 date_code; + u8 reserved2[13]; + + /* memory organization block */ + __le32 byte_per_page; + __le16 spare_bytes_per_page; + __le32 data_bytes_per_ppage; + __le16 spare_bytes_per_ppage; + __le32 pages_per_block; + __le32 blocks_per_lun; + u8 lun_count; + u8 addr_cycles; + u8 bits_per_cell; + __le16 bb_per_lun; + __le16 block_endurance; + u8 guaranteed_good_blocks; + __le16 guaranteed_block_endurance; + u8 programs_per_page; + u8 ppage_attr; + u8 ecc_bits; + u8 interleaved_bits; + u8 interleaved_ops; + u8 reserved3[13]; + + /* electrical parameter block */ + u8 io_pin_capacitance_max; + __le16 async_timing_mode; + __le16 program_cache_timing_mode; + __le16 t_prog; + __le16 t_bers; + __le16 t_r; + __le16 t_ccs; + __le16 src_sync_timing_mode; + 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_adl; + u8 reserved4[8]; + + /* vendor */ + __le16 vendor_revision; + u8 vendor[88]; + + __le16 crc; + } __packed; + + #define ONFI_CRC_BASE 0x4F4E + + /* Extended ECC information Block Definition (since ONFI 2.1) */ + struct onfi_ext_ecc_info { + u8 ecc_bits; + u8 codeword_size; + __le16 bb_per_lun; + __le16 block_endurance; + u8 reserved[2]; + } __packed; + + #define ONFI_SECTION_TYPE_0 0 /* Unused section. */ + #define ONFI_SECTION_TYPE_1 1 /* for additional sections. */ + #define ONFI_SECTION_TYPE_2 2 /* for ECC information. */ + struct onfi_ext_section { + u8 type; + u8 length; + } __packed; + + #define ONFI_EXT_SECTION_MAX 8 + + /* Extended Parameter Page Definition (since ONFI 2.1) */ + struct onfi_ext_param_page { + __le16 crc; + u8 sig[4]; /* 'E' 'P' 'P' 'S' */ + u8 reserved0[10]; + struct onfi_ext_section sections[ONFI_EXT_SECTION_MAX]; + + /* + * The actual size of the Extended Parameter Page is in + * @ext_param_page_length of nand_onfi_params{}. + * The following are the variable length sections. + * So we do not add any fields below. Please see the ONFI spec. + */ + } __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_adl; + 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; + + /* The maximum expected count of bytes in the NAND ID sequence */ + #define NAND_MAX_ID_LEN 8 + + /** + * struct nand_id - NAND id structure + * @data: buffer containing the id bytes. + * @len: ID length. + */ + struct nand_id { + u8 data[NAND_MAX_ID_LEN]; + int len; + }; + + /** + * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independent devices + * @lock: protection lock + * @active: the mtd device which holds the controller currently + * @wq: wait queue to sleep on if a NAND operation is in + * progress used instead of the per chip wait queue + * when a hw controller is available. + */ + struct nand_hw_control { + spinlock_t lock; + struct nand_chip *active; + wait_queue_head_t wq; + }; + + static inline void nand_hw_control_init(struct nand_hw_control *nfc) + { + nfc->active = NULL; + spin_lock_init(&nfc->lock); + init_waitqueue_head(&nfc->wq); + } + + /** + * struct nand_ecc_step_info - ECC step information of ECC engine + * @stepsize: data bytes per ECC step + * @strengths: array of supported strengths + * @nstrengths: number of supported strengths + */ + struct nand_ecc_step_info { + int stepsize; + const int *strengths; + int nstrengths; + }; + + /** + * struct nand_ecc_caps - capability of ECC engine + * @stepinfos: array of ECC step information + * @nstepinfos: number of ECC step information + * @calc_ecc_bytes: driver's hook to calculate ECC bytes per step + */ + struct nand_ecc_caps { + const struct nand_ecc_step_info *stepinfos; + int nstepinfos; + int (*calc_ecc_bytes)(int step_size, int strength); + }; + + /* a shorthand to generate struct nand_ecc_caps with only one ECC stepsize */ + #define NAND_ECC_CAPS_SINGLE(__name, __calc, __step, ...) \ + static const int __name##_strengths[] = { __VA_ARGS__ }; \ + static const struct nand_ecc_step_info __name##_stepinfo = { \ + .stepsize = __step, \ + .strengths = __name##_strengths, \ + .nstrengths = ARRAY_SIZE(__name##_strengths), \ + }; \ + static const struct nand_ecc_caps __name = { \ + .stepinfos = &__name##_stepinfo, \ + .nstepinfos = 1, \ + .calc_ecc_bytes = __calc, \ + } + + /** + * struct nand_ecc_ctrl - Control structure for ECC + * @mode: ECC mode + * @algo: ECC algorithm + * @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 + * @options: ECC specific options (see NAND_ECC_XXX flags defined above) + * @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). + * 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 + * out-of-band data even if they're not stored + * contiguously on the NAND chip (e.g. + * NAND_ECC_HW_SYNDROME interleaves in-band and + * out-of-band data). + * @write_page_raw: function to write a raw page without ECC. This function + * should hide the specific layout used by the ECC + * controller and consider the passed data as contiguous + * in-band and out-of-band data. ECC controller is + * responsible for doing the appropriate transformations + * to adapt to its specific layout (e.g. + * NAND_ECC_HW_SYNDROME interleaves in-band and + * out-of-band data). + * @read_page: function to read a page according to the ECC generator + * requirements; returns maximum number of bitflips corrected in + * any single ECC step, -EIO hw error + * @read_subpage: function to read parts of the page covered by ECC; + * returns same as read_page() + * @write_subpage: function to write 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 + */ + struct nand_ecc_ctrl { + nand_ecc_modes_t mode; + enum nand_ecc_algo algo; + int steps; + int size; + int bytes; + int total; + int strength; + int prepad; + int postpad; + unsigned int options; + void *priv; + void (*hwctl)(struct mtd_info *mtd, int mode); + int (*calculate)(struct mtd_info *mtd, const uint8_t *dat, + uint8_t *ecc_code); + 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 oob_required, int page); + int (*write_page_raw)(struct mtd_info *mtd, struct nand_chip *chip, + 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, int page); + int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip, + 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, + 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); + }; + + static inline int nand_standard_page_accessors(struct nand_ecc_ctrl *ecc) + { + return !(ecc->options & NAND_ECC_CUSTOM_PAGE_ACCESS); + } + + /** + * struct nand_buffers - buffer structure for read/write + * @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; + uint8_t *ecccode; + uint8_t *databuf; + }; + + /** + * struct nand_sdr_timings - SDR NAND chip timings + * + * This struct defines the timing requirements of a SDR NAND chip. + * These information can be found in every NAND datasheets and the timings + * meaning are described in the ONFI specifications: + * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing + * Parameters) + * + * All these timings are expressed in picoseconds. + * + * @tBERS_max: Block erase time + * @tCCS_min: Change column setup time + * @tPROG_max: Page program time + * @tR_max: Page read time + * @tALH_min: ALE hold time + * @tADL_min: ALE to data loading time + * @tALS_min: ALE setup time + * @tAR_min: ALE to RE# delay + * @tCEA_max: CE# access time + * @tCEH_min: CE# high hold time + * @tCH_min: CE# hold time + * @tCHZ_max: CE# high to output hi-Z + * @tCLH_min: CLE hold time + * @tCLR_min: CLE to RE# delay + * @tCLS_min: CLE setup time + * @tCOH_min: CE# high to output hold + * @tCS_min: CE# setup time + * @tDH_min: Data hold time + * @tDS_min: Data setup time + * @tFEAT_max: Busy time for Set Features and Get Features + * @tIR_min: Output hi-Z to RE# low + * @tITC_max: Interface and Timing Mode Change time + * @tRC_min: RE# cycle time + * @tREA_max: RE# access time + * @tREH_min: RE# high hold time + * @tRHOH_min: RE# high to output hold + * @tRHW_min: RE# high to WE# low + * @tRHZ_max: RE# high to output hi-Z + * @tRLOH_min: RE# low to output hold + * @tRP_min: RE# pulse width + * @tRR_min: Ready to RE# low (data only) + * @tRST_max: Device reset time, measured from the falling edge of R/B# to the + * rising edge of R/B#. + * @tWB_max: WE# high to SR[6] low + * @tWC_min: WE# cycle time + * @tWH_min: WE# high hold time + * @tWHR_min: WE# high to RE# low + * @tWP_min: WE# pulse width + * @tWW_min: WP# transition to WE# low + */ + struct nand_sdr_timings { - u32 tBERS_max; ++ u64 tBERS_max; + u32 tCCS_min; - u32 tPROG_max; - u32 tR_max; ++ u64 tPROG_max; ++ u64 tR_max; + u32 tALH_min; + u32 tADL_min; + u32 tALS_min; + u32 tAR_min; + u32 tCEA_max; + u32 tCEH_min; + u32 tCH_min; + u32 tCHZ_max; + u32 tCLH_min; + u32 tCLR_min; + u32 tCLS_min; + u32 tCOH_min; + u32 tCS_min; + u32 tDH_min; + u32 tDS_min; + u32 tFEAT_max; + u32 tIR_min; + u32 tITC_max; + u32 tRC_min; + u32 tREA_max; + u32 tREH_min; + u32 tRHOH_min; + u32 tRHW_min; + u32 tRHZ_max; + u32 tRLOH_min; + u32 tRP_min; + u32 tRR_min; + u64 tRST_max; + u32 tWB_max; + u32 tWC_min; + u32 tWH_min; + u32 tWHR_min; + u32 tWP_min; + u32 tWW_min; + }; + + /** + * enum nand_data_interface_type - NAND interface timing type + * @NAND_SDR_IFACE: Single Data Rate interface + */ + enum nand_data_interface_type { + NAND_SDR_IFACE, + }; + + /** + * struct nand_data_interface - NAND interface timing + * @type: type of the timing + * @timings: The timing, type according to @type + */ + struct nand_data_interface { + enum nand_data_interface_type type; + union { + struct nand_sdr_timings sdr; + } timings; + }; + + /** + * nand_get_sdr_timings - get SDR timing from data interface + * @conf: The data interface + */ + static inline const struct nand_sdr_timings * + nand_get_sdr_timings(const struct nand_data_interface *conf) + { + if (conf->type != NAND_SDR_IFACE) + return ERR_PTR(-EINVAL); + + return &conf->timings.sdr; + } + + /** + * struct nand_manufacturer_ops - NAND Manufacturer operations + * @detect: detect the NAND memory organization and capabilities + * @init: initialize all vendor specific fields (like the ->read_retry() + * implementation) if any. + * @cleanup: the ->init() function may have allocated resources, ->cleanup() + * is here to let vendor specific code release those resources. + */ + struct nand_manufacturer_ops { + void (*detect)(struct nand_chip *chip); + int (*init)(struct nand_chip *chip); + void (*cleanup)(struct nand_chip *chip); + }; + + /** + * 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 + * 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 + * @block_bad: [REPLACEABLE] check if a block is bad, using OOB markers + * @block_markbad: [REPLACEABLE] mark a block bad + * @cmd_ctrl: [BOARDSPECIFIC] hardwarespecific function for controlling + * ALE/CLE/nCE. Also used to write command and address + * @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. + * @cmdfunc: [REPLACEABLE] hardwarespecific function for writing + * 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 + * @buf_align: minimum buffer alignment required by a platform + * @hwcontrol: platform-specific hardware control structure + * @erase: [REPLACEABLE] erase function + * @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," 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 + * @bbt_erase_shift: [INTERN] number of address bits in a bbt entry + * @chip_shift: [INTERN] number of address bits in one chip + * @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] minimum number of set bits in a good block's + * bad block marker position; i.e., BBM == 11110111b is + * not bad when badblockbits == 7 + * @bits_per_cell: [INTERN] number of bits per cell. i.e., 1 means SLC. + * @ecc_strength_ds: [INTERN] ECC correctability from the datasheet. + * Minimum amount of bit errors per @ecc_step_ds guaranteed + * to be correctable. If unknown, set to zero. + * @ecc_step_ds: [INTERN] ECC step required by the @ecc_strength_ds, + * also from the datasheet. It is the recommended ECC step + * size, if known; if unknown, set to zero. + * @onfi_timing_mode_default: [INTERN] default ONFI timing mode. This field is + * set to the actually used ONFI mode if the chip is + * ONFI compliant or deduced from the datasheet if + * the NAND chip is not ONFI compliant. + * @numchips: [INTERN] number of physical chips + * @chipsize: [INTERN] the size of one chip for multichip arrays + * @pagemask: [INTERN] page number mask = number of (pages / chip) - 1 + * @pagebuf: [INTERN] holds the pagenumber which is currently in + * data_buf. + * @pagebuf_bitflips: [INTERN] holds the bitflip count for the page which is + * currently in data_buf. + * @subpagesize: [INTERN] holds the subpagesize + * @id: [INTERN] holds NAND ID + * @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. + * @max_bb_per_die: [INTERN] the max number of bad blocks each die of a + * this nand device will encounter their life times. + * @blocks_per_die: [INTERN] The number of PEBs in a die + * @data_interface: [INTERN] NAND interface timing information + * @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 + * @setup_data_interface: [OPTIONAL] setup the data interface and timing. If + * chipnr is set to %NAND_DATA_IFACE_CHECK_ONLY this + * means the configuration should not be applied but + * only checked. + * @bbt: [INTERN] bad block table pointer + * @bbt_td: [REPLACEABLE] bad block table descriptor for flash + * lookup. + * @bbt_md: [REPLACEABLE] bad block table mirror descriptor + * @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 independent + * devices. + * @priv: [OPTIONAL] pointer to private chip data + * @manufacturer: [INTERN] Contains manufacturer information + */ + + struct nand_chip { + struct mtd_info mtd; + void __iomem *IO_ADDR_R; + void __iomem *IO_ADDR_W; + + 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); + 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 (*dev_ready)(struct mtd_info *mtd); + void (*cmdfunc)(struct mtd_info *mtd, unsigned command, int column, + int page_addr); + int(*waitfunc)(struct mtd_info *mtd, struct nand_chip *this); + int (*erase)(struct mtd_info *mtd, int page); + int (*scan_bbt)(struct mtd_info *mtd); + 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 (*setup_read_retry)(struct mtd_info *mtd, int retry_mode); + int (*setup_data_interface)(struct mtd_info *mtd, int chipnr, + const struct nand_data_interface *conf); + + + int chip_delay; + unsigned int options; + unsigned int bbt_options; + + int page_shift; + int phys_erase_shift; + int bbt_erase_shift; + int chip_shift; + int numchips; + uint64_t chipsize; + int pagemask; + int pagebuf; + unsigned int pagebuf_bitflips; + int subpagesize; + uint8_t bits_per_cell; + uint16_t ecc_strength_ds; + uint16_t ecc_step_ds; + int onfi_timing_mode_default; + int badblockpos; + int badblockbits; + + struct nand_id id; + int onfi_version; + int jedec_version; + union { + struct nand_onfi_params onfi_params; + struct nand_jedec_params jedec_params; + }; + u16 max_bb_per_die; + u32 blocks_per_die; + + struct nand_data_interface *data_interface; + + int read_retries; + + flstate_t state; + + uint8_t *oob_poi; + struct nand_hw_control *controller; + + struct nand_ecc_ctrl ecc; + struct nand_buffers *buffers; + unsigned long buf_align; + struct nand_hw_control hwcontrol; + + uint8_t *bbt; + struct nand_bbt_descr *bbt_td; + struct nand_bbt_descr *bbt_md; + + struct nand_bbt_descr *badblock_pattern; + + void *priv; + + struct { + const struct nand_manufacturer *desc; + void *priv; + } manufacturer; + }; + + extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops; + extern const struct mtd_ooblayout_ops nand_ooblayout_lp_ops; + + static inline void nand_set_flash_node(struct nand_chip *chip, + struct device_node *np) + { + mtd_set_of_node(&chip->mtd, np); + } + + static inline struct device_node *nand_get_flash_node(struct nand_chip *chip) + { + return mtd_get_of_node(&chip->mtd); + } + + 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; + } + + static inline void nand_set_manufacturer_data(struct nand_chip *chip, + void *priv) + { + chip->manufacturer.priv = priv; + } + + static inline void *nand_get_manufacturer_data(struct nand_chip *chip) + { + return chip->manufacturer.priv; + } + + /* + * NAND Flash Manufacturer ID Codes + */ + #define NAND_MFR_TOSHIBA 0x98 + #define NAND_MFR_ESMT 0xc8 + #define NAND_MFR_SAMSUNG 0xec + #define NAND_MFR_FUJITSU 0x04 + #define NAND_MFR_NATIONAL 0x8f + #define NAND_MFR_RENESAS 0x07 + #define NAND_MFR_STMICRO 0x20 + #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 + #define NAND_MFR_SANDISK 0x45 + #define NAND_MFR_INTEL 0x89 + #define NAND_MFR_ATO 0x9b + #define NAND_MFR_WINBOND 0xef + + + /* + * A helper for defining older NAND chips where the second ID byte fully + * defined the chip, including the geometry (chip size, eraseblock size, page + * size). All these chips have 512 bytes NAND page size. + */ + #define LEGACY_ID_NAND(nm, devid, chipsz, erasesz, opts) \ + { .name = (nm), {{ .dev_id = (devid) }}, .pagesize = 512, \ + .chipsize = (chipsz), .erasesize = (erasesz), .options = (opts) } + + /* + * A helper for defining newer chips which report their page size and + * eraseblock size via the extended ID bytes. + * + * The real difference between LEGACY_ID_NAND and EXTENDED_ID_NAND is that with + * EXTENDED_ID_NAND, manufacturers overloaded the same device ID so that the + * device ID now only represented a particular total chip size (and voltage, + * buswidth), and the page size, eraseblock size, and OOB size could vary while + * using the same device ID. + */ + #define EXTENDED_ID_NAND(nm, devid, chipsz, opts) \ + { .name = (nm), {{ .dev_id = (devid) }}, .chipsize = (chipsz), \ + .options = (opts) } + + #define NAND_ECC_INFO(_strength, _step) \ + { .strength_ds = (_strength), .step_ds = (_step) } + #define NAND_ECC_STRENGTH(type) ((type)->ecc.strength_ds) + #define NAND_ECC_STEP(type) ((type)->ecc.step_ds) + + /** + * struct nand_flash_dev - NAND Flash Device ID Structure + * @name: a human-readable name of the NAND chip + * @dev_id: the device ID (the second byte of the full chip ID array) + * @mfr_id: manufecturer ID part of the full chip ID array (refers the same + * memory address as @id[0]) + * @dev_id: device ID part of the full chip ID array (refers the same memory + * address as @id[1]) + * @id: full device ID array + * @pagesize: size of the NAND page in bytes; if 0, then the real page size (as + * well as the eraseblock size) is determined from the extended NAND + * chip ID array) + * @chipsize: total chip size in MiB + * @erasesize: eraseblock size in bytes (determined from the extended ID if 0) + * @options: stores various chip bit options + * @id_len: The valid length of the @id. + * @oobsize: OOB size + * @ecc: ECC correctability and step information from the datasheet. + * @ecc.strength_ds: The ECC correctability from the datasheet, same as the + * @ecc_strength_ds in nand_chip{}. + * @ecc.step_ds: The ECC step required by the @ecc.strength_ds, same as the + * @ecc_step_ds in nand_chip{}, also from the datasheet. + * For example, the "4bit ECC for each 512Byte" can be set with + * NAND_ECC_INFO(4, 512). + * @onfi_timing_mode_default: the default ONFI timing mode entered after a NAND + * reset. Should be deduced from timings described + * in the datasheet. + * + */ + struct nand_flash_dev { + char *name; + union { + struct { + uint8_t mfr_id; + uint8_t dev_id; + }; + uint8_t id[NAND_MAX_ID_LEN]; + }; + unsigned int pagesize; + unsigned int chipsize; + unsigned int erasesize; + unsigned int options; + uint16_t id_len; + uint16_t oobsize; + struct { + uint16_t strength_ds; + uint16_t step_ds; + } ecc; + int onfi_timing_mode_default; + }; + + /** + * struct nand_manufacturer - NAND Flash Manufacturer structure + * @name: Manufacturer name + * @id: manufacturer ID code of device. + * @ops: manufacturer operations + */ + struct nand_manufacturer { + int id; + char *name; + const struct nand_manufacturer_ops *ops; + }; + + const struct nand_manufacturer *nand_get_manufacturer(u8 id); + + static inline const char * + nand_manufacturer_name(const struct nand_manufacturer *manufacturer) + { + return manufacturer ? manufacturer->name : "Unknown"; + } + + extern struct nand_flash_dev nand_flash_ids[]; + + extern const struct nand_manufacturer_ops toshiba_nand_manuf_ops; + extern const struct nand_manufacturer_ops samsung_nand_manuf_ops; + extern const struct nand_manufacturer_ops hynix_nand_manuf_ops; + extern const struct nand_manufacturer_ops micron_nand_manuf_ops; + extern const struct nand_manufacturer_ops amd_nand_manuf_ops; + extern const struct nand_manufacturer_ops macronix_nand_manuf_ops; + + int nand_default_bbt(struct mtd_info *mtd); + int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs); + int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs); + int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt); + int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, + int allowbbt); + int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, uint8_t *buf); + + /** + * struct platform_nand_chip - chip level device structure + * @nr_chips: max. number of chips to scan for + * @chip_offset: chip number offset + * @nr_partitions: number of partitions pointed to by partitions (or zero) + * @partitions: mtd partition list + * @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 + * @part_probe_types: NULL-terminated array of probe types + */ + struct platform_nand_chip { + int nr_chips; + int chip_offset; + int nr_partitions; + struct mtd_partition *partitions; + int chip_delay; + unsigned int options; + unsigned int bbt_options; + const char **part_probe_types; + }; + + /* Keep gcc happy */ + struct platform_device; + + /** + * struct platform_nand_ctrl - controller level device structure + * @probe: platform specific function to probe/setup hardware + * @remove: platform specific function to remove/teardown hardware + * @hwcontrol: platform specific hardware control structure + * @dev_ready: platform specific function to read ready/busy pin + * @select_chip: platform specific chip select function + * @cmd_ctrl: platform specific function for controlling + * ALE/CLE/nCE. Also used to write command and address + * @write_buf: platform specific function for write buffer + * @read_buf: platform specific function for read buffer + * @read_byte: platform specific function to read one byte from chip + * @priv: private data to transport driver specific settings + * + * All fields are optional and depend on the hardware driver requirements + */ + struct platform_nand_ctrl { + int (*probe)(struct platform_device *pdev); + void (*remove)(struct platform_device *pdev); + void (*hwcontrol)(struct mtd_info *mtd, int cmd); + 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); + 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); + unsigned char (*read_byte)(struct mtd_info *mtd); + void *priv; + }; + + /** + * struct platform_nand_data - container structure for platform-specific data + * @chip: chip level chip structure + * @ctrl: controller level device structure + */ + struct platform_nand_data { + struct platform_nand_chip chip; + struct platform_nand_ctrl ctrl; + }; + + /* return the supported features. */ + static inline int onfi_feature(struct nand_chip *chip) + { + return chip->onfi_version ? le16_to_cpu(chip->onfi_params.features) : 0; + } + + /* return the supported asynchronous timing mode. */ + 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); + } + + int onfi_init_data_interface(struct nand_chip *chip, + struct nand_data_interface *iface, + enum nand_data_interface_type type, + int timing_mode); + + /* + * Check if it is a SLC nand. + * The !nand_is_slc() can be used to check the MLC/TLC nand chips. + * We do not distinguish the MLC and TLC now. + */ + static inline bool nand_is_slc(struct nand_chip *chip) + { + WARN(chip->bits_per_cell == 0, + "chip->bits_per_cell is used uninitialized\n"); + 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; + } + + /* get timing characteristics from ONFI timing mode. */ + const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode); + /* get data interface from ONFI timing mode 0, used after reset. */ + const struct nand_data_interface *nand_get_default_data_interface(void); + + int nand_check_erased_ecc_chunk(void *data, int datalen, + void *ecc, int ecclen, + void *extraoob, int extraooblen, + int threshold); + + int nand_check_ecc_caps(struct nand_chip *chip, + const struct nand_ecc_caps *caps, int oobavail); + + int nand_match_ecc_req(struct nand_chip *chip, + const struct nand_ecc_caps *caps, int oobavail); + + int nand_maximize_ecc(struct nand_chip *chip, + const struct nand_ecc_caps *caps, int oobavail); + + /* Default write_oob implementation */ + int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page); + + /* Default write_oob syndrome implementation */ + int nand_write_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, + int page); + + /* Default read_oob implementation */ + int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page); + + /* Default read_oob syndrome implementation */ + int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip, + int page); + + /* Stub used by drivers that do not support GET/SET FEATURES operations */ + int nand_onfi_get_set_features_notsupp(struct mtd_info *mtd, + struct nand_chip *chip, int addr, + u8 *subfeature_param); + + /* Default read_page_raw implementation */ + int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + uint8_t *buf, int oob_required, int page); + + /* Default write_page_raw implementation */ + int nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + const uint8_t *buf, int oob_required, int page); + + /* Reset and initialize a NAND device */ + int nand_reset(struct nand_chip *chip, int chipnr); + + /* Free resources held by the NAND device */ + void nand_cleanup(struct nand_chip *chip); + + /* Default extended ID decoding function */ + void nand_decode_ext_id(struct nand_chip *chip); + #endif /* __LINUX_MTD_RAWNAND_H */