--- /dev/null
+/*
+ * linux/include/linux/mtd/onenand.h
+ *
+ * Copyright (C) 2005-2007 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_MTD_ONENAND_H
+#define __LINUX_MTD_ONENAND_H
+
+#include <linux/mtd/onenand_regs.h>
+
+/* Note: The header order is impoertant */
+#include <onenand_uboot.h>
+
+#include <linux/compat.h>
+#include <linux/mtd/bbm.h>
+
+#define MAX_DIES 2
+#define MAX_BUFFERRAM 2
+#define MAX_ONENAND_PAGESIZE (4096 + 128)
+
+/* Scan and identify a OneNAND device */
+extern int onenand_scan (struct mtd_info *mtd, int max_chips);
+/* Free resources held by the OneNAND device */
+extern void onenand_release (struct mtd_info *mtd);
+
+/**
+ * struct onenand_bufferram - OneNAND BufferRAM Data
+ * @param blockpage block & page address in BufferRAM
+ */
+struct onenand_bufferram {
+ int blockpage;
+};
+
+/**
+ * struct onenand_chip - OneNAND Private Flash Chip Data
+ * @param base [BOARDSPECIFIC] address to access OneNAND
+ * @dies: [INTERN][FLEXONENAND] number of dies on chip
+ * @boundary: [INTERN][FLEXONENAND] Boundary of the dies
+ * @diesize: [INTERN][FLEXONENAND] Size of the dies
+ * @param chipsize [INTERN] the size of one chip for multichip arrays
+ * @param device_id [INTERN] device ID
+ * @param verstion_id [INTERN] version ID
+ * @technology [INTERN] describes the internal NAND array technology such as SLC or MLC.
+ * @density_mask: [INTERN] chip density, used for DDP devices
+ * @param options [BOARDSPECIFIC] various chip options. They can partly be set to inform onenand_scan about
+ * @param erase_shift [INTERN] number of address bits in a block
+ * @param page_shift [INTERN] number of address bits in a page
+ * @param ppb_shift [INTERN] number of address bits in a pages per block
+ * @param page_mask [INTERN] a page per block mask
+ * @param writesize [INTERN] a real page size
+ * @param bufferam_index [INTERN] BufferRAM index
+ * @param bufferam [INTERN] BufferRAM info
+ * @param readw [REPLACEABLE] hardware specific function for read short
+ * @param writew [REPLACEABLE] hardware specific function for write short
+ * @param command [REPLACEABLE] hardware specific function for writing commands to the chip
+ * @param wait [REPLACEABLE] hardware specific function for wait on ready
+ * @param read_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
+ * @param write_bufferram [REPLACEABLE] hardware specific function for BufferRAM Area
+ * @param chip_lock [INTERN] spinlock used to protect access to this structure and the chip
+ * @param wq [INTERN] wait queue to sleep on if a OneNAND operation is in progress
+ * @param state [INTERN] the current state of the OneNAND device
+ * @param autooob [REPLACEABLE] the default (auto)placement scheme
+ * @param priv [OPTIONAL] pointer to private chip date
+ */
+struct onenand_chip {
+ void __iomem *base;
+ unsigned int dies;
+ unsigned int boundary[MAX_DIES];
+ unsigned int diesize[MAX_DIES];
+ unsigned int chipsize;
+ unsigned int device_id;
+ unsigned int version_id;
+ unsigned int technology;
+ unsigned int density_mask;
+ unsigned int options;
+
+ unsigned int erase_shift;
+ unsigned int page_shift;
+ unsigned int ppb_shift; /* Pages per block shift */
+ unsigned int page_mask;
+ unsigned int writesize;
+
+ unsigned int bufferram_index;
+ struct onenand_bufferram bufferram[MAX_BUFFERRAM];
+
+ int (*command) (struct mtd_info *mtd, int cmd, loff_t address,
+ size_t len);
+ int (*wait) (struct mtd_info *mtd, int state);
+ int (*bbt_wait) (struct mtd_info *mtd, int state);
+ void (*unlock_all)(struct mtd_info *mtd);
+ int (*read_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
+ unsigned char *buffer, int offset, size_t count);
+ int (*write_bufferram) (struct mtd_info *mtd, loff_t addr, int area,
+ const unsigned char *buffer, int offset,
+ size_t count);
+ unsigned short (*read_word) (void __iomem *addr);
+ void (*write_word) (unsigned short value, void __iomem *addr);
+ int (*chip_probe)(struct mtd_info *mtd);
+ void (*mmcontrol) (struct mtd_info *mtd, int sync_read);
+ int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
+ int (*scan_bbt)(struct mtd_info *mtd);
+
+ unsigned char *main_buf;
+ unsigned char *spare_buf;
+#ifdef DONT_USE_UBOOT
+ spinlock_t chip_lock;
+ wait_queue_head_t wq;
+#endif
+ int state;
+ unsigned char *page_buf;
+ unsigned char *oob_buf;
+
+ struct nand_oobinfo *autooob;
+ int subpagesize;
+ struct nand_ecclayout *ecclayout;
+
+ void *bbm;
+
+ void *priv;
+};
+
+/*
+ * Helper macros
+ */
+#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_SET_BUFFERRAM0(this) (this->bufferram_index = 0)
+#define ONENAND_SET_BUFFERRAM1(this) (this->bufferram_index = 1)
+
+#define FLEXONENAND(this) (this->device_id & DEVICE_IS_FLEXONENAND)
+#define ONENAND_IS_MLC(this) (this->technology & ONENAND_TECHNOLOGY_IS_MLC)
+#define ONENAND_IS_DDP(this) \
+ (this->device_id & ONENAND_DEVICE_IS_DDP)
+
+#define ONENAND_IS_4KB_PAGE(this) \
+ (this->options & ONENAND_HAS_4KB_PAGE)
+
+#define ONENAND_IS_2PLANE(this) (0)
+
+/*
+ * Options bits
+ */
+#define ONENAND_HAS_CONT_LOCK (0x0001)
+#define ONENAND_HAS_UNLOCK_ALL (0x0002)
+#define ONENAND_HAS_2PLANE (0x0004)
+#define ONENAND_HAS_4KB_PAGE (0x0008)
+#define ONENAND_RUNTIME_BADBLOCK_CHECK (0x0200)
+#define ONENAND_PAGEBUF_ALLOC (0x1000)
+#define ONENAND_OOBBUF_ALLOC (0x2000)
+
+/*
+ * OneNAND Flash Manufacturer ID Codes
+ */
+#define ONENAND_MFR_NUMONYX 0x20
+#define ONENAND_MFR_SAMSUNG 0xec
+
+/**
+ * struct nand_manufacturers - NAND Flash Manufacturer ID Structure
+ * @param name: Manufacturer name
+ * @param id: manufacturer ID code of device.
+*/
+struct onenand_manufacturers {
+ int id;
+ char *name;
+};
+
+int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops);
+
+unsigned int onenand_block(struct onenand_chip *this, loff_t addr);
+int flexonenand_region(struct mtd_info *mtd, loff_t addr);
+#endif /* __LINUX_MTD_ONENAND_H */
Code Review / kvmfornfv.git / blobdiff