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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 12:31:43 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-14 12:31:43 +0900
commit82cb6acea4d10fa4080612c58deb63993f558e5a (patch)
treeba6f0b8281e37c7e1830ef2162d38d8a2bc2fbb7 /include
parent0d522ee7499e4abe7189b2f1728e838959b8ddde (diff)
parent885d71e5838f68d5dbee92ab952cc90ad6c1dc6b (diff)
downloadlinux-82cb6acea4d10fa4080612c58deb63993f558e5a.tar.gz
linux-82cb6acea4d10fa4080612c58deb63993f558e5a.tar.xz
Merge tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd
Pull MTD changes from Brian Norris: - Unify some compile-time differences so that we have fewer uses of #ifdef CONFIG_OF in atmel_nand - Other general cleanups (removing unused functions, options, variables, fields; use correct interfaces) - Fix BUG() for new odd-sized NAND, which report non-power-of-2 dimensions via ONFI - Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.) - Improve differentiation between SLC and MLC NAND -- this clarifies an ABI issue regarding the MTD "type" (in sysfs and in the MEMGETINFO ioctl), where the MTD_MLCNANDFLASH type was present but inconsistently used - Extend GPMI NAND to support multi-chip-select NAND for some platforms - Many improvements to the OMAP2/3 NAND driver, including an expanded DT binding to bring us closer to mainline support for some OMAP systems - Fix a deadlock in the error path of the Atmel NAND driver probe - Correct the error codes from MTD mmap() to conform to POSIX and the Linux Programmer's Manual. This is an acknowledged change in the MTD ABI, but I can't imagine somebody relying on the non-standard -ENOSYS error code specifically. Am I just being unimaginative? :) - Fix a few important GPMI NAND bugs (one regression from 3.12 and one long-standing race condition) - More? Read the log! * tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd: (98 commits) mtd: gpmi: fix the NULL pointer mtd: gpmi: fix kernel BUG due to racing DMA operations mtd: mtdchar: return expected errors on mmap() call mtd: gpmi: only scan two chips for imx6 mtd: gpmi: Use devm_kzalloc() mtd: atmel_nand: fix bug driver will in a dead lock if no nand detected mtd: nand: use a local variable to simplify the nand_scan_tail mtd: nand: remove deprecated IRQF_DISABLED mtd: dataflash: Say if we find a device we don't support mtd: nand: omap: fix error return code in omap_nand_probe() mtd: nand_bbt: kill NAND_BBT_SCANALLPAGES mtd: m25p80: fixup device removal failure path mtd: mxc_nand: Include linux/of.h header mtd: remove duplicated include from mtdcore.c mtd: m25p80: add support for Macronix mx25l3255e mtd: nand: omap: remove selection of BCH ecc-scheme via KConfig mtd: nand: omap: updated devm_xx for all resource allocation and free calls mtd: nand: omap: use drivers/mtd/nand/nand_bch.c wrapper for BCH ECC instead of lib/bch.c mtd: nand: omap: clean-up ecc layout for BCH ecc schemes mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/mtd/bbm.h2
-rw-r--r--include/linux/mtd/map.h4
-rw-r--r--include/linux/mtd/mtd.h8
-rw-r--r--include/linux/mtd/nand.h16
-rw-r--r--include/linux/of_mtd.h21
-rw-r--r--include/linux/platform_data/mtd-nand-omap2.h18
-rw-r--r--include/uapi/linux/major.h2
-rw-r--r--include/uapi/mtd/mtd-abi.h9
8 files changed, 59 insertions, 21 deletions
diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 95fc482..36bb6a5 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -91,8 +91,6 @@ struct nand_bbt_descr {
* with NAND_BBT_CREATE.
*/
#define NAND_BBT_CREATE_EMPTY 0x00000400
-/* Search good / bad pattern through all pages of a block */
-#define NAND_BBT_SCANALLPAGES 0x00000800
/* Write bbt if neccecary */
#define NAND_BBT_WRITE 0x00002000
/* Read and write back block contents when writing bbt */
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 4b02512..5f487d7 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -365,7 +365,7 @@ static inline map_word map_word_load_partial(struct map_info *map, map_word orig
bitpos = (map_bankwidth(map)-1-i)*8;
#endif
orig.x[0] &= ~(0xff << bitpos);
- orig.x[0] |= buf[i-start] << bitpos;
+ orig.x[0] |= (unsigned long)buf[i-start] << bitpos;
}
}
return orig;
@@ -384,7 +384,7 @@ static inline map_word map_word_ff(struct map_info *map)
if (map_bankwidth(map) < MAP_FF_LIMIT) {
int bw = 8 * map_bankwidth(map);
- r.x[0] = (1 << bw) - 1;
+ r.x[0] = (1UL << bw) - 1;
} else {
for (i=0; i<map_words(map); i++)
r.x[i] = ~0UL;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index f9bfe52..8cc0e2f 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -29,9 +29,6 @@
#include <asm/div64.h>
-#define MTD_CHAR_MAJOR 90
-#define MTD_BLOCK_MAJOR 31
-
#define MTD_ERASE_PENDING 0x01
#define MTD_ERASING 0x02
#define MTD_ERASE_SUSPEND 0x04
@@ -354,6 +351,11 @@ static inline int mtd_has_oob(const struct mtd_info *mtd)
return mtd->_read_oob && mtd->_write_oob;
}
+static inline int mtd_type_is_nand(const struct mtd_info *mtd)
+{
+ return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
+}
+
static inline int mtd_can_have_bb(const struct mtd_info *mtd)
{
return !!mtd->_block_isbad;
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index ac8e89d..9e6c8f9 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -198,6 +198,7 @@ typedef enum {
/* 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;
@@ -477,7 +478,7 @@ struct nand_buffers {
* @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
- * @cellinfo: [INTERN] MLC/multichip data from chip ident
+ * @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.
@@ -498,7 +499,6 @@ struct nand_buffers {
* supported, 0 otherwise.
* @onfi_set_features: [REPLACEABLE] set the features for ONFI nand
* @onfi_get_features: [REPLACEABLE] get the features for ONFI nand
- * @ecclayout: [REPLACEABLE] the default ECC placement scheme
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash
* lookup.
@@ -559,7 +559,7 @@ struct nand_chip {
int pagebuf;
unsigned int pagebuf_bitflips;
int subpagesize;
- uint8_t cellinfo;
+ uint8_t bits_per_cell;
uint16_t ecc_strength_ds;
uint16_t ecc_step_ds;
int badblockpos;
@@ -572,7 +572,6 @@ struct nand_chip {
uint8_t *oob_poi;
struct nand_hw_control *controller;
- struct nand_ecclayout *ecclayout;
struct nand_ecc_ctrl ecc;
struct nand_buffers *buffers;
@@ -797,4 +796,13 @@ static inline int onfi_get_sync_timing_mode(struct nand_chip *chip)
return le16_to_cpu(chip->onfi_params.src_sync_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)
+{
+ return chip->bits_per_cell == 1;
+}
#endif /* __LINUX_MTD_NAND_H */
diff --git a/include/linux/of_mtd.h b/include/linux/of_mtd.h
index ed7f267..6f10e93 100644
--- a/include/linux/of_mtd.h
+++ b/include/linux/of_mtd.h
@@ -10,10 +10,29 @@
#define __LINUX_OF_NET_H
#ifdef CONFIG_OF_MTD
+
#include <linux/of.h>
int of_get_nand_ecc_mode(struct device_node *np);
int of_get_nand_bus_width(struct device_node *np);
bool of_get_nand_on_flash_bbt(struct device_node *np);
-#endif
+
+#else /* CONFIG_OF_MTD */
+
+static inline int of_get_nand_ecc_mode(struct device_node *np)
+{
+ return -ENOSYS;
+}
+
+static inline int of_get_nand_bus_width(struct device_node *np)
+{
+ return -ENOSYS;
+}
+
+static inline bool of_get_nand_on_flash_bbt(struct device_node *np)
+{
+ return false;
+}
+
+#endif /* CONFIG_OF_MTD */
#endif /* __LINUX_OF_MTD_H */
diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h
index 6bf9ef4..4da5bfa 100644
--- a/include/linux/platform_data/mtd-nand-omap2.h
+++ b/include/linux/platform_data/mtd-nand-omap2.h
@@ -23,13 +23,16 @@ enum nand_io {
};
enum omap_ecc {
- /* 1-bit ecc: stored at end of spare area */
- OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */
- OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */
- /* 1-bit ecc: stored at beginning of spare area as romcode */
- OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */
- OMAP_ECC_BCH4_CODE_HW, /* 4-bit BCH ecc code */
- OMAP_ECC_BCH8_CODE_HW, /* 8-bit BCH ecc code */
+ /* 1-bit ECC calculation by GPMC, Error detection by Software */
+ OMAP_ECC_HAM1_CODE_HW = 0,
+ /* 4-bit ECC calculation by GPMC, Error detection by Software */
+ OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
+ /* 4-bit ECC calculation by GPMC, Error detection by ELM */
+ OMAP_ECC_BCH4_CODE_HW,
+ /* 8-bit ECC calculation by GPMC, Error detection by Software */
+ OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
+ /* 8-bit ECC calculation by GPMC, Error detection by ELM */
+ OMAP_ECC_BCH8_CODE_HW,
};
struct gpmc_nand_regs {
@@ -63,5 +66,6 @@ struct omap_nand_platform_data {
/* for passing the partitions */
struct device_node *of_node;
+ struct device_node *elm_of_node;
};
#endif
diff --git a/include/uapi/linux/major.h b/include/uapi/linux/major.h
index 6a8ca98..620252e 100644
--- a/include/uapi/linux/major.h
+++ b/include/uapi/linux/major.h
@@ -54,6 +54,7 @@
#define ACSI_MAJOR 28
#define AZTECH_CDROM_MAJOR 29
#define FB_MAJOR 29 /* /dev/fb* framebuffers */
+#define MTD_BLOCK_MAJOR 31
#define CM206_CDROM_MAJOR 32
#define IDE2_MAJOR 33
#define IDE3_MAJOR 34
@@ -105,6 +106,7 @@
#define IDE6_MAJOR 88
#define IDE7_MAJOR 89
#define IDE8_MAJOR 90
+#define MTD_CHAR_MAJOR 90
#define IDE9_MAJOR 91
#define DASD_MAJOR 94
diff --git a/include/uapi/mtd/mtd-abi.h b/include/uapi/mtd/mtd-abi.h
index 36eace0..e272ea0 100644
--- a/include/uapi/mtd/mtd-abi.h
+++ b/include/uapi/mtd/mtd-abi.h
@@ -94,10 +94,10 @@ struct mtd_write_req {
#define MTD_RAM 1
#define MTD_ROM 2
#define MTD_NORFLASH 3
-#define MTD_NANDFLASH 4
+#define MTD_NANDFLASH 4 /* SLC NAND */
#define MTD_DATAFLASH 6
#define MTD_UBIVOLUME 7
-#define MTD_MLCNANDFLASH 8
+#define MTD_MLCNANDFLASH 8 /* MLC NAND (including TLC) */
#define MTD_WRITEABLE 0x400 /* Device is writeable */
#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
@@ -275,4 +275,9 @@ enum mtd_file_modes {
MTD_FILE_MODE_RAW,
};
+static inline int mtd_type_is_nand_user(const struct mtd_info_user *mtd)
+{
+ return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
+}
+
#endif /* __MTD_ABI_H__ */