90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/*
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* $Id: mtd.h,v 1.56 2004/08/09 18:46:04 dmarlin Exp $
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*
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* Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
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*
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* Released under GPL
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*/
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#ifndef __MTD_MTD_H__
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#define __MTD_MTD_H__
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#include <linux/types.h>
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#include <linux/mtd/mtd-abi.h>
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#define MAX_MTD_DEVICES 16
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#define MTD_ERASE_PENDING 0x01
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#define MTD_ERASING 0x02
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#define MTD_ERASE_SUSPEND 0x04
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#define MTD_ERASE_DONE 0x08
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#define MTD_ERASE_FAILED 0x10
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/* If the erase fails, fail_addr might indicate exactly which block failed. If
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fail_addr = 0xffffffff, the failure was not at the device level or was not
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specific to any particular block. */
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struct erase_info {
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struct nand_chip *nand;
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u_int32_t addr;
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u_int32_t len;
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u_int32_t fail_addr;
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u_long time;
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u_long retries;
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u_int dev;
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u_int cell;
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void (*callback) (struct erase_info *self);
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u_long priv;
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u_char state;
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struct erase_info *next;
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};
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struct mtd_erase_region_info {
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u_int32_t offset; /* At which this region starts, from the beginning of the MTD */
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u_int32_t erasesize; /* For this region */
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u_int32_t numblocks; /* Number of blocks of erasesize in this region */
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};
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#define MTD_ERASE(mtd, args...) (*(mtd->erase))(mtd, args)
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#define MTD_POINT(mtd, a,b,c,d) (*(mtd->point))(mtd, a,b,c, (u_char **)(d))
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#define MTD_UNPOINT(mtd, arg) (*(mtd->unpoint))(mtd, (u_char *)arg)
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#define MTD_READ(mtd, args...) (*(mtd->read))(mtd, args)
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#define MTD_WRITE(mtd, args...) (*(mtd->write))(mtd, args)
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#define MTD_READV(mtd, args...) (*(mtd->readv))(mtd, args)
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#define MTD_WRITEV(mtd, args...) (*(mtd->writev))(mtd, args)
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#define MTD_READECC(mtd, args...) (*(mtd->read_ecc))(mtd, args)
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#define MTD_WRITEECC(mtd, args...) (*(mtd->write_ecc))(mtd, args)
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#define MTD_READOOB(mtd, args...) (*(mtd->read_oob))(mtd, args)
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#define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args)
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#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd); } while (0)
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#ifdef CONFIG_MTD_PARTITIONS
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void mtd_erase_callback(struct erase_info *instr);
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#else
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static inline void mtd_erase_callback(struct erase_info *instr)
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{
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if (instr->callback)
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instr->callback(instr);
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}
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#endif
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/*
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* Debugging macro and defines
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*/
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#define MTD_DEBUG_LEVEL0 (0) /* Quiet */
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#define MTD_DEBUG_LEVEL1 (1) /* Audible */
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#define MTD_DEBUG_LEVEL2 (2) /* Loud */
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#define MTD_DEBUG_LEVEL3 (3) /* Noisy */
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#ifdef CONFIG_MTD_DEBUG
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#define DEBUG(n, args...) \
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do { \
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if (n <= CONFIG_MTD_DEBUG_VERBOSE) \
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printk(KERN_INFO args); \
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} while(0)
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#else /* CONFIG_MTD_DEBUG */
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#define DEBUG(n, args...) do { } while(0)
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#endif /* CONFIG_MTD_DEBUG */
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#endif /* __MTD_MTD_H__ */
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