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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-06 12:15:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-06 12:15:41 -0700
commit3fd14cdcc05a682b03743683ce3a726898b20555 (patch)
treed9f1a1f18d8a4168dec47d85397f36eae7f61633 /include
parent83c7c18b169bdac3dabab763d16549c1e4688a8b (diff)
parentfe5f31a8010a0cb13e72cfb72905fefa2a41730c (diff)
Merge tag 'mtd/for-4.17' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon: "MTD Core: - Remove support for asynchronous erase (not implemented by any of the existing drivers anyway) - Remove Cyrille from the list of SPI NOR and MTD maintainers - Fix kernel doc headers - Allow users to define the partitions parsers they want to test through a DT property (compatible of the partitions subnode) - Remove the bfin-async-flash driver (the only architecture using it has been removed) - Fix pagetest test - Add extra checks in mtd_erase() - Simplify the MTD partition creation logic and get rid of mtd_add_device_partitions() MTD Drivers: - Add endianness information to the physmap DT binding - Add Eon EN29LV400A IDs to JEDEC probe logic - Use %*ph where appropriate SPI NOR Drivers: - Make fsl-quaspi assign different names to MTD devices connected to the same QSPI controller - Remove an unneeded driver.bus assigned in the fsl-qspi driver NAND Core: - Prepare arrival of the SPI NAND subsystem by implementing a generic (interface-agnostic) layer to ease manipulation of NAND devices - Move onenand code base to the drivers/mtd/nand/ dir - Rework timing mode selection - Provide a generic way for NAND chip drivers to flag a specific GET/SET FEATURE operation as supported/unsupported - Stop embedding ONFI/JEDEC param page in nand_chip NAND Drivers: - Rework/cleanup of the mxc driver - Various cleanups in the vf610 driver - Migrate the fsmc and vf610 to ->exec_op() - Get rid of the pxa driver (replaced by marvell_nand) - Support ->setup_data_interface() in the GPMI driver - Fix probe error path in several drivers - Remove support for unused hw_syndrome mode in sunxi_nand - Various minor improvements" * tag 'mtd/for-4.17' of git://git.infradead.org/linux-mtd: (89 commits) dt-bindings: fsl-quadspi: Add the example of two SPI NOR mtd: fsl-quadspi: Distinguish the mtd device names mtd: nand: Fix some function description mismatches in core.c mtd: fsl-quadspi: Remove unneeded driver.bus assignment mtd: rawnand: marvell: Rename ->ecc_clk into ->core_clk mtd: rawnand: s3c2410: enhance the probe function error path mtd: rawnand: tango: fix probe function error path mtd: rawnand: sh_flctl: fix the probe function error path mtd: rawnand: omap2: fix the probe function error path mtd: rawnand: mxc: fix probe function error path mtd: rawnand: denali: fix probe function error path mtd: rawnand: davinci: fix probe function error path mtd: rawnand: cafe: fix probe function error path mtd: rawnand: brcmnand: fix probe function error path mtd: rawnand: sunxi: Stop supporting ECC_HW_SYNDROME mode mtd: rawnand: marvell: Fix clock resource by adding a register clock mtd: ftl: Use DIV_ROUND_UP() mtd: Fix some function description mismatches in mtdcore.c mtd: physmap_of: update struct map_info's swap as per map requirement dt-bindings: mtd-physmap: Add endianness supports ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/mtd/bbm.h2
-rw-r--r--include/linux/mtd/mtd.h19
-rw-r--r--include/linux/mtd/nand.h731
-rw-r--r--include/linux/mtd/nand_ecc.h2
-rw-r--r--include/linux/mtd/ndfc.h2
-rw-r--r--include/linux/mtd/partitions.h1
-rw-r--r--include/linux/mtd/rawnand.h106
7 files changed, 794 insertions, 69 deletions
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 3bf8f954b642..3102bd754d18 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -1,6 +1,4 @@
/*
- * linux/include/linux/mtd/bbm.h
- *
* NAND family Bad Block Management (BBM) header file
* - Bad Block Table (BBT) implementation
*
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 205ededccc60..a86c4fa93115 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -30,32 +30,19 @@
#include <asm/div64.h>
-#define MTD_ERASE_PENDING 0x01
-#define MTD_ERASING 0x02
-#define MTD_ERASE_SUSPEND 0x04
-#define MTD_ERASE_DONE 0x08
-#define MTD_ERASE_FAILED 0x10
-
#define MTD_FAIL_ADDR_UNKNOWN -1LL
+struct mtd_info;
+
/*
* If the erase fails, fail_addr might indicate exactly which block failed. If
* fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level
* or was not specific to any particular block.
*/
struct erase_info {
- struct mtd_info *mtd;
uint64_t addr;
uint64_t len;
uint64_t fail_addr;
- u_long time;
- u_long retries;
- unsigned dev;
- unsigned cell;
- void (*callback) (struct erase_info *self);
- u_long priv;
- u_char state;
- struct erase_info *next;
};
struct mtd_erase_region_info {
@@ -595,8 +582,6 @@ extern void register_mtd_user (struct mtd_notifier *new);
extern int unregister_mtd_user (struct mtd_notifier *old);
void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size);
-void mtd_erase_callback(struct erase_info *instr);
-
static inline int mtd_is_bitflip(int err) {
return err == -EUCLEAN;
}
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
new file mode 100644
index 000000000000..792ea5c26329
--- /dev/null
+++ b/include/linux/mtd/nand.h
@@ -0,0 +1,731 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2017 - Free Electrons
+ *
+ * Authors:
+ * Boris Brezillon <boris.brezillon@free-electrons.com>
+ * Peter Pan <peterpandong@micron.com>
+ */
+
+#ifndef __LINUX_MTD_NAND_H
+#define __LINUX_MTD_NAND_H
+
+#include <linux/mtd/mtd.h>
+
+/**
+ * struct nand_memory_organization - Memory organization structure
+ * @bits_per_cell: number of bits per NAND cell
+ * @pagesize: page size
+ * @oobsize: OOB area size
+ * @pages_per_eraseblock: number of pages per eraseblock
+ * @eraseblocks_per_lun: number of eraseblocks per LUN (Logical Unit Number)
+ * @planes_per_lun: number of planes per LUN
+ * @luns_per_target: number of LUN per target (target is a synonym for die)
+ * @ntargets: total number of targets exposed by the NAND device
+ */
+struct nand_memory_organization {
+ unsigned int bits_per_cell;
+ unsigned int pagesize;
+ unsigned int oobsize;
+ unsigned int pages_per_eraseblock;
+ unsigned int eraseblocks_per_lun;
+ unsigned int planes_per_lun;
+ unsigned int luns_per_target;
+ unsigned int ntargets;
+};
+
+#define NAND_MEMORG(bpc, ps, os, ppe, epl, ppl, lpt, nt) \
+ { \
+ .bits_per_cell = (bpc), \
+ .pagesize = (ps), \
+ .oobsize = (os), \
+ .pages_per_eraseblock = (ppe), \
+ .eraseblocks_per_lun = (epl), \
+ .planes_per_lun = (ppl), \
+ .luns_per_target = (lpt), \
+ .ntargets = (nt), \
+ }
+
+/**
+ * struct nand_row_converter - Information needed to convert an absolute offset
+ * into a row address
+ * @lun_addr_shift: position of the LUN identifier in the row address
+ * @eraseblock_addr_shift: position of the eraseblock identifier in the row
+ * address
+ */
+struct nand_row_converter {
+ unsigned int lun_addr_shift;
+ unsigned int eraseblock_addr_shift;
+};
+
+/**
+ * struct nand_pos - NAND position object
+ * @target: the NAND target/die
+ * @lun: the LUN identifier
+ * @plane: the plane within the LUN
+ * @eraseblock: the eraseblock within the LUN
+ * @page: the page within the LUN
+ *
+ * These information are usually used by specific sub-layers to select the
+ * appropriate target/die and generate a row address to pass to the device.
+ */
+struct nand_pos {
+ unsigned int target;
+ unsigned int lun;
+ unsigned int plane;
+ unsigned int eraseblock;
+ unsigned int page;
+};
+
+/**
+ * struct nand_page_io_req - NAND I/O request object
+ * @pos: the position this I/O request is targeting
+ * @dataoffs: the offset within the page
+ * @datalen: number of data bytes to read from/write to this page
+ * @databuf: buffer to store data in or get data from
+ * @ooboffs: the OOB offset within the page
+ * @ooblen: the number of OOB bytes to read from/write to this page
+ * @oobbuf: buffer to store OOB data in or get OOB data from
+ *
+ * This object is used to pass per-page I/O requests to NAND sub-layers. This
+ * way all useful information are already formatted in a useful way and
+ * specific NAND layers can focus on translating these information into
+ * specific commands/operations.
+ */
+struct nand_page_io_req {
+ struct nand_pos pos;
+ unsigned int dataoffs;
+ unsigned int datalen;
+ union {
+ const void *out;
+ void *in;
+ } databuf;
+ unsigned int ooboffs;
+ unsigned int ooblen;
+ union {
+ const void *out;
+ void *in;
+ } oobbuf;
+};
+
+/**
+ * struct nand_ecc_req - NAND ECC requirements
+ * @strength: ECC strength
+ * @step_size: ECC step/block size
+ */
+struct nand_ecc_req {
+ unsigned int strength;
+ unsigned int step_size;
+};
+
+#define NAND_ECCREQ(str, stp) { .strength = (str), .step_size = (stp) }
+
+/**
+ * struct nand_bbt - bad block table object
+ * @cache: in memory BBT cache
+ */
+struct nand_bbt {
+ unsigned long *cache;
+};
+
+struct nand_device;
+
+/**
+ * struct nand_ops - NAND operations
+ * @erase: erase a specific block. No need to check if the block is bad before
+ * erasing, this has been taken care of by the generic NAND layer
+ * @markbad: mark a specific block bad. No need to check if the block is
+ * already marked bad, this has been taken care of by the generic
+ * NAND layer. This method should just write the BBM (Bad Block
+ * Marker) so that future call to struct_nand_ops->isbad() return
+ * true
+ * @isbad: check whether a block is bad or not. This method should just read
+ * the BBM and return whether the block is bad or not based on what it
+ * reads
+ *
+ * These are all low level operations that should be implemented by specialized
+ * NAND layers (SPI NAND, raw NAND, ...).
+ */
+struct nand_ops {
+ int (*erase)(struct nand_device *nand, const struct nand_pos *pos);
+ int (*markbad)(struct nand_device *nand, const struct nand_pos *pos);
+ bool (*isbad)(struct nand_device *nand, const struct nand_pos *pos);
+};
+
+/**
+ * struct nand_device - NAND device
+ * @mtd: MTD instance attached to the NAND device
+ * @memorg: memory layout
+ * @eccreq: ECC requirements
+ * @rowconv: position to row address converter
+ * @bbt: bad block table info
+ * @ops: NAND operations attached to the NAND device
+ *
+ * Generic NAND object. Specialized NAND layers (raw NAND, SPI NAND, OneNAND)
+ * should declare their own NAND object embedding a nand_device struct (that's
+ * how inheritance is done).
+ * struct_nand_device->memorg and struct_nand_device->eccreq should be filled
+ * at device detection time to reflect the NAND device
+ * capabilities/requirements. Once this is done nanddev_init() can be called.
+ * It will take care of converting NAND information into MTD ones, which means
+ * the specialized NAND layers should never manually tweak
+ * struct_nand_device->mtd except for the ->_read/write() hooks.
+ */
+struct nand_device {
+ struct mtd_info mtd;
+ struct nand_memory_organization memorg;
+ struct nand_ecc_req eccreq;
+ struct nand_row_converter rowconv;
+ struct nand_bbt bbt;
+ const struct nand_ops *ops;
+};
+
+/**
+ * struct nand_io_iter - NAND I/O iterator
+ * @req: current I/O request
+ * @oobbytes_per_page: maximum number of OOB bytes per page
+ * @dataleft: remaining number of data bytes to read/write
+ * @oobleft: remaining number of OOB bytes to read/write
+ *
+ * Can be used by specialized NAND layers to iterate over all pages covered
+ * by an MTD I/O request, which should greatly simplifies the boiler-plate
+ * code needed to read/write data from/to a NAND device.
+ */
+struct nand_io_iter {
+ struct nand_page_io_req req;
+ unsigned int oobbytes_per_page;
+ unsigned int dataleft;
+ unsigned int oobleft;
+};
+
+/**
+ * mtd_to_nanddev() - Get the NAND device attached to the MTD instance
+ * @mtd: MTD instance
+ *
+ * Return: the NAND device embedding @mtd.
+ */
+static inline struct nand_device *mtd_to_nanddev(struct mtd_info *mtd)
+{
+ return container_of(mtd, struct nand_device, mtd);
+}
+
+/**
+ * nanddev_to_mtd() - Get the MTD device attached to a NAND device
+ * @nand: NAND device
+ *
+ * Return: the MTD device embedded in @nand.
+ */
+static inline struct mtd_info *nanddev_to_mtd(struct nand_device *nand)
+{
+ return &nand->mtd;
+}
+
+/*
+ * nanddev_bits_per_cell() - Get the number of bits per cell
+ * @nand: NAND device
+ *
+ * Return: the number of bits per cell.
+ */
+static inline unsigned int nanddev_bits_per_cell(const struct nand_device *nand)
+{
+ return nand->memorg.bits_per_cell;
+}
+
+/**
+ * nanddev_page_size() - Get NAND page size
+ * @nand: NAND device
+ *
+ * Return: the page size.
+ */
+static inline size_t nanddev_page_size(const struct nand_device *nand)
+{
+ return nand->memorg.pagesize;
+}
+
+/**
+ * nanddev_per_page_oobsize() - Get NAND OOB size
+ * @nand: NAND device
+ *
+ * Return: the OOB size.
+ */
+static inline unsigned int
+nanddev_per_page_oobsize(const struct nand_device *nand)
+{
+ return nand->memorg.oobsize;
+}
+
+/**
+ * nanddev_pages_per_eraseblock() - Get the number of pages per eraseblock
+ * @nand: NAND device
+ *
+ * Return: the number of pages per eraseblock.
+ */
+static inline unsigned int
+nanddev_pages_per_eraseblock(const struct nand_device *nand)
+{
+ return nand->memorg.pages_per_eraseblock;
+}
+
+/**
+ * nanddev_per_page_oobsize() - Get NAND erase block size
+ * @nand: NAND device
+ *
+ * Return: the eraseblock size.
+ */
+static inline size_t nanddev_eraseblock_size(const struct nand_device *nand)
+{
+ return nand->memorg.pagesize * nand->memorg.pages_per_eraseblock;
+}
+
+/**
+ * nanddev_eraseblocks_per_lun() - Get the number of eraseblocks per LUN
+ * @nand: NAND device
+ *
+ * Return: the number of eraseblocks per LUN.
+ */
+static inline unsigned int
+nanddev_eraseblocks_per_lun(const struct nand_device *nand)
+{
+ return nand->memorg.eraseblocks_per_lun;
+}
+
+/**
+ * nanddev_target_size() - Get the total size provided by a single target/die
+ * @nand: NAND device
+ *
+ * Return: the total size exposed by a single target/die in bytes.
+ */
+static inline u64 nanddev_target_size(const struct nand_device *nand)
+{
+ return (u64)nand->memorg.luns_per_target *
+ nand->memorg.eraseblocks_per_lun *
+ nand->memorg.pages_per_eraseblock *
+ nand->memorg.pagesize;
+}
+
+/**
+ * nanddev_ntarget() - Get the total of targets
+ * @nand: NAND device
+ *
+ * Return: the number of targets/dies exposed by @nand.
+ */
+static inline unsigned int nanddev_ntargets(const struct nand_device *nand)
+{
+ return nand->memorg.ntargets;
+}
+
+/**
+ * nanddev_neraseblocks() - Get the total number of erasablocks
+ * @nand: NAND device
+ *
+ * Return: the total number of eraseblocks exposed by @nand.
+ */
+static inline unsigned int nanddev_neraseblocks(const struct nand_device *nand)
+{
+ return (u64)nand->memorg.luns_per_target *
+ nand->memorg.eraseblocks_per_lun *
+ nand->memorg.pages_per_eraseblock;
+}
+
+/**
+ * nanddev_size() - Get NAND size
+ * @nand: NAND device
+ *
+ * Return: the total size (in bytes) exposed by @nand.
+ */
+static inline u64 nanddev_size(const struct nand_device *nand)
+{
+ return nanddev_target_size(nand) * nanddev_ntargets(nand);
+}
+
+/**
+ * nanddev_get_memorg() - Extract memory organization info from a NAND device
+ * @nand: NAND device
+ *
+ * This can be used by the upper layer to fill the memorg info before calling
+ * nanddev_init().
+ *
+ * Return: the memorg object embedded in the NAND device.
+ */
+static inline struct nand_memory_organization *
+nanddev_get_memorg(struct nand_device *nand)
+{
+ return &nand->memorg;
+}
+
+int nanddev_init(struct nand_device *nand, const struct nand_ops *ops,
+ struct module *owner);
+void nanddev_cleanup(struct nand_device *nand);
+
+/**
+ * nanddev_register() - Register a NAND device
+ * @nand: NAND device
+ *
+ * Register a NAND device.
+ * This function is just a wrapper around mtd_device_register()
+ * registering the MTD device embedded in @nand.
+ *
+ * Return: 0 in case of success, a negative error code otherwise.
+ */
+static inline int nanddev_register(struct nand_device *nand)
+{
+ return mtd_device_register(&nand->mtd, NULL, 0);
+}
+
+/**
+ * nanddev_unregister() - Unregister a NAND device
+ * @nand: NAND device
+ *
+ * Unregister a NAND device.
+ * This function is just a wrapper around mtd_device_unregister()
+ * unregistering the MTD device embedded in @nand.
+ *
+ * Return: 0 in case of success, a negative error code otherwise.
+ */
+static inline int nanddev_unregister(struct nand_device *nand)
+{
+ return mtd_device_unregister(&nand->mtd);
+}
+
+/**
+ * nanddev_set_of_node() - Attach a DT node to a NAND device
+ * @nand: NAND device
+ * @np: DT node
+ *
+ * Attach a DT node to a NAND device.
+ */
+static inline void nanddev_set_of_node(struct nand_device *nand,
+ struct device_node *np)
+{
+ mtd_set_of_node(&nand->mtd, np);
+}
+
+/**
+ * nanddev_get_of_node() - Retrieve the DT node attached to a NAND device
+ * @nand: NAND device
+ *
+ * Return: the DT node attached to @nand.
+ */
+static inline struct device_node *nanddev_get_of_node(struct nand_device *nand)
+{
+ return mtd_get_of_node(&nand->mtd);
+}
+
+/**
+ * nanddev_offs_to_pos() - Convert an absolute NAND offset into a NAND position
+ * @nand: NAND device
+ * @offs: absolute NAND offset (usually passed by the MTD layer)
+ * @pos: a NAND position object to fill in
+ *
+ * Converts @offs into a nand_pos representation.
+ *
+ * Return: the offset within the NAND page pointed by @pos.
+ */
+static inline unsigned int nanddev_offs_to_pos(struct nand_device *nand,
+ loff_t offs,
+ struct nand_pos *pos)
+{
+ unsigned int pageoffs;
+ u64 tmp = offs;
+
+ pageoffs = do_div(tmp, nand->memorg.pagesize);
+ pos->page = do_div(tmp, nand->memorg.pages_per_eraseblock);
+ pos->eraseblock = do_div(tmp, nand->memorg.eraseblocks_per_lun);
+ pos->plane = pos->eraseblock % nand->memorg.planes_per_lun;
+ pos->lun = do_div(tmp, nand->memorg.luns_per_target);
+ pos->target = tmp;
+
+ return pageoffs;
+}
+
+/**
+ * nanddev_pos_cmp() - Compare two NAND positions
+ * @a: First NAND position
+ * @b: Second NAND position
+ *
+ * Compares two NAND positions.
+ *
+ * Return: -1 if @a < @b, 0 if @a == @b and 1 if @a > @b.
+ */
+static inline int nanddev_pos_cmp(const struct nand_pos *a,
+ const struct nand_pos *b)
+{
+ if (a->target != b->target)
+ return a->target < b->target ? -1 : 1;
+
+ if (a->lun != b->lun)
+ return a->lun < b->lun ? -1 : 1;
+
+ if (a->eraseblock != b->eraseblock)
+ return a->eraseblock < b->eraseblock ? -1 : 1;
+
+ if (a->page != b->page)
+ return a->page < b->page ? -1 : 1;
+
+ return 0;
+}
+
+/**
+ * nanddev_pos_to_offs() - Convert a NAND position into an absolute offset
+ * @nand: NAND device
+ * @pos: the NAND position to convert
+ *
+ * Converts @pos NAND position into an absolute offset.
+ *
+ * Return: the absolute offset. Note that @pos points to the beginning of a
+ * page, if one wants to point to a specific offset within this page
+ * the returned offset has to be adjusted manually.
+ */
+static inline loff_t nanddev_pos_to_offs(struct nand_device *nand,
+ const struct nand_pos *pos)
+{
+ unsigned int npages;
+
+ npages = pos->page +
+ ((pos->eraseblock +
+ (pos->lun +
+ (pos->target * nand->memorg.luns_per_target)) *
+ nand->memorg.eraseblocks_per_lun) *
+ nand->memorg.pages_per_eraseblock);
+
+ return (loff_t)npages * nand->memorg.pagesize;
+}
+
+/**
+ * nanddev_pos_to_row() - Extract a row address from a NAND position
+ * @nand: NAND device
+ * @pos: the position to convert
+ *
+ * Converts a NAND position into a row address that can then be passed to the
+ * device.
+ *
+ * Return: the row address extracted from @pos.
+ */
+static inline unsigned int nanddev_pos_to_row(struct nand_device *nand,
+ const struct nand_pos *pos)
+{
+ return (pos->lun << nand->rowconv.lun_addr_shift) |
+ (pos->eraseblock << nand->rowconv.eraseblock_addr_shift) |
+ pos->page;
+}
+
+/**
+ * nanddev_pos_next_target() - Move a position to the next target/die
+ * @nand: NAND device
+ * @pos: the position to update
+ *
+ * Updates @pos to point to the start of the next target/die. Useful when you
+ * want to iterate over all targets/dies of a NAND device.
+ */
+static inline void nanddev_pos_next_target(struct nand_device *nand,
+ struct nand_pos *pos)
+{
+ pos->page = 0;
+ pos->plane = 0;
+ pos->eraseblock = 0;
+ pos->lun = 0;
+ pos->target++;
+}
+
+/**
+ * nanddev_pos_next_lun() - Move a position to the next LUN
+ * @nand: NAND device
+ * @pos: the position to update
+ *
+ * Updates @pos to point to the start of the next LUN. Useful when you want to
+ * iterate over all LUNs of a NAND device.
+ */
+static inline void nanddev_pos_next_lun(struct nand_device *nand,
+ struct nand_pos *pos)
+{
+ if (pos->lun >= nand->memorg.luns_per_target - 1)
+ return nanddev_pos_next_target(nand, pos);
+
+ pos->lun++;
+ pos->page = 0;
+ pos->plane = 0;
+ pos->eraseblock = 0;
+}
+
+/**
+ * nanddev_pos_next_eraseblock() - Move a position to the next eraseblock
+ * @nand: NAND device
+ * @pos: the position to update
+ *
+ * Updates @pos to point to the start of the next eraseblock. Useful when you
+ * want to iterate over all eraseblocks of a NAND device.
+ */
+static inline void nanddev_pos_next_eraseblock(struct nand_device *nand,
+ struct nand_pos *pos)
+{
+ if (pos->eraseblock >= nand->memorg.eraseblocks_per_lun - 1)
+ return nanddev_pos_next_lun(nand, pos);
+
+ pos->eraseblock++;
+ pos->page = 0;
+ pos->plane = pos->eraseblock % nand->memorg.planes_per_lun;
+}
+
+/**
+ * nanddev_pos_next_eraseblock() - Move a position to the next page
+ * @nand: NAND device
+ * @pos: the position to update
+ *
+ * Updates @pos to point to the start of the next page. Useful when you want to
+ * iterate over all pages of a NAND device.
+ */
+static inline void nanddev_pos_next_page(struct nand_device *nand,
+ struct nand_pos *pos)
+{
+ if (pos->page >= nand->memorg.pages_per_eraseblock - 1)
+ return nanddev_pos_next_eraseblock(nand, pos);
+
+ pos->page++;
+}
+
+/**
+ * nand_io_iter_init - Initialize a NAND I/O iterator
+ * @nand: NAND device
+ * @offs: absolute offset
+ * @req: MTD request
+ * @iter: NAND I/O iterator
+ *
+ * Initializes a NAND iterator based on the information passed by the MTD
+ * layer.
+ */
+static inline void nanddev_io_iter_init(struct nand_device *nand,
+ loff_t offs, struct mtd_oob_ops *req,
+ struct nand_io_iter *iter)
+{
+ struct mtd_info *mtd = nanddev_to_mtd(nand);
+
+ iter->req.dataoffs = nanddev_offs_to_pos(nand, offs, &iter->req.pos);
+ iter->req.ooboffs = req->ooboffs;
+ iter->oobbytes_per_page = mtd_oobavail(mtd, req);
+ iter->dataleft = req->len;
+ iter->oobleft = req->ooblen;
+ iter->req.databuf.in = req->datbuf;
+ iter->req.datalen = min_t(unsigned int,
+ nand->memorg.pagesize - iter->req.dataoffs,
+ iter->dataleft);
+ iter->req.oobbuf.in = req->oobbuf;
+ iter->req.ooblen = min_t(unsigned int,
+ iter->oobbytes_per_page - iter->req.ooboffs,
+ iter->oobleft);
+}
+
+/**
+ * nand_io_iter_next_page - Move to the next page
+ * @nand: NAND device
+ * @iter: NAND I/O iterator
+ *
+ * Updates the @iter to point to the next page.
+ */
+static inline void nanddev_io_iter_next_page(struct nand_device *nand,
+ struct nand_io_iter *iter)
+{
+ nanddev_pos_next_page(nand, &iter->req.pos);
+ iter->dataleft -= iter->req.datalen;
+ iter->req.databuf.in += iter->req.datalen;
+ iter->oobleft -= iter->req.ooblen;
+ iter->req.oobbuf.in += iter->req.ooblen;
+ iter->req.dataoffs = 0;
+ iter->req.ooboffs = 0;
+ iter->req.datalen = min_t(unsigned int, nand->memorg.pagesize,
+ iter->dataleft);
+ iter->req.ooblen = min_t(unsigned int, iter->oobbytes_per_page,
+ iter->oobleft);
+}
+
+/**
+ * nand_io_iter_end - Should end iteration or not
+ * @nand: NAND device
+ * @iter: NAND I/O iterator
+ *
+ * Check whether @iter has reached the end of the NAND portion it was asked to
+ * iterate on or not.
+ *
+ * Return: true if @iter has reached the end of the iteration request, false
+ * otherwise.
+ */
+static inline bool nanddev_io_iter_end(struct nand_device *nand,
+ const struct nand_io_iter *iter)
+{
+ if (iter->dataleft || iter->oobleft)
+ return false;
+
+ return true;
+}
+
+/**
+ * nand_io_for_each_page - Iterate over all NAND pages contained in an MTD I/O
+ * request
+ * @nand: NAND device
+ * @start: start address to read/write from
+ * @req: MTD I/O request
+ * @iter: NAND I/O iterator
+ *
+ * Should be used for iterate over pages that are contained in an MTD request.
+ */
+#define nanddev_io_for_each_page(nand, start, req, iter) \
+ for (nanddev_io_iter_init(nand, start, req, iter); \
+ !nanddev_io_iter_end(nand, iter); \
+ nanddev_io_iter_next_page(nand, iter))
+
+bool nanddev_isbad(struct nand_device *nand, const struct nand_pos *pos);
+bool nanddev_isreserved(struct nand_device *nand, const struct nand_pos *pos);
+int nanddev_erase(struct nand_device *nand, const struct nand_pos *pos);
+int nanddev_markbad(struct nand_device *nand, const struct nand_pos *pos);
+
+/* BBT related functions */
+enum nand_bbt_block_status {
+ NAND_BBT_BLOCK_STATUS_UNKNOWN,
+ NAND_BBT_BLOCK_GOOD,
+ NAND_BBT_BLOCK_WORN,
+ NAND_BBT_BLOCK_RESERVED,
+ NAND_BBT_BLOCK_FACTORY_BAD,
+ NAND_BBT_BLOCK_NUM_STATUS,
+};
+
+int nanddev_bbt_init(struct nand_device *nand);
+void nanddev_bbt_cleanup(struct nand_device *nand);
+int nanddev_bbt_update(struct nand_device *nand);
+int nanddev_bbt_get_block_status(const struct nand_device *nand,
+ unsigned int entry);
+int nanddev_bbt_set_block_status(struct nand_device *nand, unsigned int entry,
+ enum nand_bbt_block_status status);
+int nanddev_bbt_markbad(struct nand_device *nand, unsigned int block);
+
+/**
+ * nanddev_bbt_pos_to_entry() - Convert a NAND position into a BBT entry
+ * @nand: NAND device
+ * @pos: the NAND position we want to get BBT entry for
+ *
+ * Return the BBT entry used to store information about the eraseblock pointed
+ * by @pos.
+ *
+ * Return: the BBT entry storing information about eraseblock pointed by @pos.
+ */
+static inline unsigned int nanddev_bbt_pos_to_entry(struct nand_device *nand,
+ const struct nand_pos *pos)
+{
+ return pos->eraseblock +
+ ((pos->lun + (pos->target * nand->memorg.luns_per_target)) *
+ nand->memorg.eraseblocks_per_lun);
+}
+
+/**
+ * nanddev_bbt_is_initialized() - Check if the BBT has been initialized
+ * @nand: NAND device
+ *
+ * Return: true if the BBT has been initialized, false otherwise.
+ */
+static inline bool nanddev_bbt_is_initialized(struct nand_device *nand)
+{
+ return !!nand->bbt.cache;
+}
+
+/* MTD -> NAND helper functions. */
+int nanddev_mtd_erase(struct mtd_info *mtd, struct erase_info *einfo);
+
+#endif /* __LINUX_MTD_NAND_H */
diff --git a/include/linux/mtd/nand_ecc.h b/include/linux/mtd/nand_ecc.h
index 4d8406c81652..8a2decf7462c 100644
--- a/include/linux/mtd/nand_ecc.h
+++ b/include/linux/mtd/nand_ecc.h
@@ -1,6 +1,4 @@
/*
- * drivers/mtd/nand_ecc.h
- *
* Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
* David Woodhouse <dwmw2@infradead.org>
* Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/linux/mtd/ndfc.h b/include/linux/mtd/ndfc.h
index d0558a982628..357e88b3263a 100644
--- a/include/linux/mtd/ndfc.h
+++ b/include/linux/mtd/ndfc.h
@@ -1,6 +1,4 @@
/*
- * linux/include/linux/mtd/ndfc.h
- *
* Copyright (c) 2006 Thomas Gleixner <tglx@linutronix.de>
*
* This program is free software; you can redistribute it and/or modify
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index c4beb70dacbd..11cb0c50cd84 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -77,6 +77,7 @@ struct mtd_part_parser {
struct list_head list;
struct module *owner;
const char *name;
+ const struct of_device_id *of_match_table;
int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
struct mtd_part_parser_data *);
void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 56c5570aadbe..5dad59b31244 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -21,6 +21,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/bbm.h>
+#include <linux/types.h>
struct mtd_info;
struct nand_flash_dev;
@@ -235,7 +236,8 @@ struct nand_chip;
#define ONFI_TIMING_MODE_5 (1 << 5)
#define ONFI_TIMING_MODE_UNKNOWN (1 << 6)
-/* ONFI feature address */
+/* ONFI feature number/address */
+#define ONFI_FEATURE_NUMBER 256
#define ONFI_FEATURE_ADDR_TIMING_MODE 0x1
/* Vendor-specific feature address (Micron) */
@@ -429,6 +431,47 @@ struct nand_jedec_params {
__le16 crc;
} __packed;
+/**
+ * struct onfi_params - ONFI specific parameters that will be reused
+ * @version: ONFI version (BCD encoded), 0 if ONFI is not supported
+ * @tPROG: Page program time
+ * @tBERS: Block erase time
+ * @tR: Page read time
+ * @tCCS: Change column setup time
+ * @async_timing_mode: Supported asynchronous timing mode
+ * @vendor_revision: Vendor specific revision number
+ * @vendor: Vendor specific data
+ */
+struct onfi_params {
+ int version;
+ u16 tPROG;
+ u16 tBERS;
+ u16 tR;
+ u16 tCCS;
+ u16 async_timing_mode;
+ u16 vendor_revision;
+ u8 vendor[88];
+};
+
+/**
+ * struct nand_parameters - NAND generic parameters from the parameter page
+ * @model: Model name
+ * @supports_set_get_features: The NAND chip supports setting/getting features
+ * @set_feature_list: Bitmap of features that can be set
+ * @get_feature_list: Bitmap of features that can be get
+ * @onfi: ONFI specific parameters
+ */
+struct nand_parameters {
+ /* Generic parameters */
+ char model[100];
+ bool supports_set_get_features;
+ DECLARE_BITMAP(set_feature_list, ONFI_FEATURE_NUMBER);
+ DECLARE_BITMAP(get_feature_list, ONFI_FEATURE_NUMBER);
+
+ /* ONFI parameters */
+ struct onfi_params onfi;
+};
+
/* The maximum expected count of bytes in the NAND ID sequence */
#define NAND_MAX_ID_LEN 8
@@ -1157,21 +1200,15 @@ int nand_op_parser_exec_op(struct nand_chip *chip,
* 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.
+ * @parameters: [INTERN] holds generic parameters under an easily
+ * readable form.
* @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
+ * @set_features: [REPLACEABLE] set the NAND chip features
+ * @get_features: [REPLACEABLE] get the NAND chip features
* @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
@@ -1212,10 +1249,10 @@ struct nand_chip {
bool check_only);
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 (*set_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ int feature_addr, uint8_t *subfeature_para);
+ int (*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);
@@ -1243,12 +1280,7 @@ struct nand_chip {
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;
- };
+ struct nand_parameters parameters;
u16 max_bb_per_die;
u32 blocks_per_die;
@@ -1535,26 +1567,13 @@ struct platform_nand_data {
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)
+ if (!chip->parameters.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);
+ return chip->parameters.onfi.async_timing_mode;
}
int onfi_fill_data_interface(struct nand_chip *chip,
@@ -1591,13 +1610,6 @@ static inline int nand_opcode_8bits(unsigned int command)
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);
@@ -1629,10 +1641,12 @@ int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip, int page);
int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
int page);
+/* Wrapper to use in order for controllers/vendors to GET/SET FEATURES */
+int nand_get_features(struct nand_chip *chip, int addr, u8 *subfeature_param);
+int nand_set_features(struct nand_chip *chip, int addr, u8 *subfeature_param);
/* 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);
+int nand_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,