summaryrefslogtreecommitdiffstats
path: root/include/linux/mtd
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/mtd')
-rw-r--r--include/linux/mtd/blktrans.h3
-rw-r--r--include/linux/mtd/mtd.h24
-rw-r--r--include/linux/mtd/nand.h15
-rw-r--r--include/linux/mtd/onenand.h8
-rw-r--r--include/linux/mtd/onenand_regs.h1
5 files changed, 36 insertions, 15 deletions
diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h
index 72fc68c5ee9..9a6e2f953cb 100644
--- a/include/linux/mtd/blktrans.h
+++ b/include/linux/mtd/blktrans.h
@@ -24,7 +24,6 @@ struct mtd_blktrans_dev {
struct mtd_info *mtd;
struct mutex lock;
int devnum;
- int blksize;
unsigned long size;
int readonly;
void *blkcore_priv; /* gendisk in 2.5, devfs_handle in 2.4 */
@@ -36,6 +35,8 @@ struct mtd_blktrans_ops {
char *name;
int major;
int part_bits;
+ int blksize;
+ int blkshift;
/* Access functions */
int (*readsect)(struct mtd_blktrans_dev *dev,
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 94a443d4525..d644e57703a 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -23,7 +23,7 @@
#define MTD_CHAR_MAJOR 90
#define MTD_BLOCK_MAJOR 31
-#define MAX_MTD_DEVICES 16
+#define MAX_MTD_DEVICES 32
#define MTD_ERASE_PENDING 0x01
#define MTD_ERASING 0x02
@@ -75,15 +75,12 @@ typedef enum {
* struct mtd_oob_ops - oob operation operands
* @mode: operation mode
*
- * @len: number of bytes to write/read. When a data buffer is given
- * (datbuf != NULL) this is the number of data bytes. When
- * no data buffer is available this is the number of oob bytes.
+ * @len: number of data bytes to write/read
*
- * @retlen: number of bytes written/read. When a data buffer is given
- * (datbuf != NULL) this is the number of data bytes. When
- * no data buffer is available this is the number of oob bytes.
+ * @retlen: number of data bytes written/read
*
- * @ooblen: number of oob bytes per page
+ * @ooblen: number of oob bytes to write/read
+ * @oobretlen: number of oob bytes written/read
* @ooboffs: offset of oob data in the oob area (only relevant when
* mode = MTD_OOB_PLACE)
* @datbuf: data buffer - if NULL only oob data are read/written
@@ -94,6 +91,7 @@ struct mtd_oob_ops {
size_t len;
size_t retlen;
size_t ooblen;
+ size_t oobretlen;
uint32_t ooboffs;
uint8_t *datbuf;
uint8_t *oobbuf;
@@ -202,11 +200,20 @@ struct mtd_info {
/* ECC status information */
struct mtd_ecc_stats ecc_stats;
+ /* Subpage shift (NAND) */
+ int subpage_sft;
void *priv;
struct module *owner;
int usecount;
+
+ /* If the driver is something smart, like UBI, it may need to maintain
+ * its own reference counting. The below functions are only for driver.
+ * The driver may register its callbacks. These callbacks are not
+ * supposed to be called by MTD users */
+ int (*get_device) (struct mtd_info *mtd);
+ void (*put_device) (struct mtd_info *mtd);
};
@@ -216,6 +223,7 @@ extern int add_mtd_device(struct mtd_info *mtd);
extern int del_mtd_device (struct mtd_info *mtd);
extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
+extern struct mtd_info *get_mtd_device_nm(const char *name);
extern void put_mtd_device(struct mtd_info *mtd);
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 8b3ef418721..2071b02f052 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -166,6 +166,9 @@ typedef enum {
* for all large page devices, as they do not support
* autoincrement.*/
#define NAND_NO_READRDY 0x00000100
+/* Chip does not allow subpage writes */
+#define NAND_NO_SUBPAGE_WRITE 0x00000200
+
/* Options valid for Samsung large page devices */
#define NAND_SAMSUNG_LP_OPTIONS \
@@ -193,6 +196,9 @@ typedef enum {
/* 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
/*
* nand_state_t - chip states
@@ -286,9 +292,7 @@ struct nand_ecc_ctrl {
* struct nand_buffers - buffer structure for read/write
* @ecccalc: buffer for calculated ecc
* @ecccode: buffer for ecc read from flash
- * @oobwbuf: buffer for write oob data
* @databuf: buffer for data - dynamically sized
- * @oobrbuf: buffer to read oob data
*
* Do not change the order of buffers. databuf and oobrbuf must be in
* consecutive order.
@@ -296,9 +300,7 @@ struct nand_ecc_ctrl {
struct nand_buffers {
uint8_t ecccalc[NAND_MAX_OOBSIZE];
uint8_t ecccode[NAND_MAX_OOBSIZE];
- uint8_t oobwbuf[NAND_MAX_OOBSIZE];
- uint8_t databuf[NAND_MAX_PAGESIZE];
- uint8_t oobrbuf[NAND_MAX_OOBSIZE];
+ uint8_t databuf[NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE];
};
/**
@@ -345,6 +347,7 @@ struct nand_buffers {
* @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
+ * @subpagesize: [INTERN] holds the subpagesize
* @ecclayout: [REPLACEABLE] the default ecc placement scheme
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash lookup
@@ -392,6 +395,8 @@ struct nand_chip {
unsigned long chipsize;
int pagemask;
int pagebuf;
+ int subpagesize;
+ uint8_t cellinfo;
int badblockpos;
nand_state_t state;
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 6f045b586e7..f775a7af389 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -13,6 +13,7 @@
#define __LINUX_MTD_ONENAND_H
#include <linux/spinlock.h>
+#include <linux/completion.h>
#include <linux/mtd/onenand_regs.h>
#include <linux/mtd/bbm.h>
@@ -33,7 +34,6 @@ typedef enum {
FL_WRITING,
FL_ERASING,
FL_SYNCING,
- FL_UNLOCKING,
FL_LOCKING,
FL_RESETING,
FL_OTPING,
@@ -88,6 +88,7 @@ struct onenand_bufferram {
* operation is in progress
* @state: [INTERN] the current state of the OneNAND device
* @page_buf: data buffer
+ * @subpagesize: [INTERN] holds the subpagesize
* @ecclayout: [REPLACEABLE] the default ecc placement scheme
* @bbm: [REPLACEABLE] pointer to Bad Block Management
* @priv: [OPTIONAL] pointer to private chip date
@@ -120,11 +121,15 @@ struct onenand_chip {
int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
int (*scan_bbt)(struct mtd_info *mtd);
+ struct completion complete;
+ int irq;
+
spinlock_t chip_lock;
wait_queue_head_t wq;
onenand_state_t state;
unsigned char *page_buf;
+ int subpagesize;
struct nand_ecclayout *ecclayout;
void *bbm;
@@ -138,6 +143,7 @@ struct onenand_chip {
#define ONENAND_CURRENT_BUFFERRAM(this) (this->bufferram_index)
#define ONENAND_NEXT_BUFFERRAM(this) (this->bufferram_index ^ 1)
#define ONENAND_SET_NEXT_BUFFERRAM(this) (this->bufferram_index ^= 1)
+#define ONENAND_SET_PREV_BUFFERRAM(this) (this->bufferram_index ^= 1)
#define ONENAND_GET_SYS_CFG1(this) \
(this->read_word(this->base + ONENAND_REG_SYS_CFG1))
diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h
index 9e409fe6ded..e31c8f5d427 100644
--- a/include/linux/mtd/onenand_regs.h
+++ b/include/linux/mtd/onenand_regs.h
@@ -179,6 +179,7 @@
* ECC Status Reigser FF00h (R)
*/
#define ONENAND_ECC_1BIT (1 << 0)
+#define ONENAND_ECC_1BIT_ALL (0x5555)
#define ONENAND_ECC_2BIT (1 << 1)
#define ONENAND_ECC_2BIT_ALL (0xAAAA)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-11 18:35:03 +0000