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70 lines
1.7 KiB
70 lines
1.7 KiB
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/*
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* struct flchip definition
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*
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* Contains information about the location and state of a given flash device
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*
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* (C) 2000 Red Hat. GPLd.
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*
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* $Id: flashchip.h,v 1.1.1.1 2006/05/08 03:32:49 cpu Exp $
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*
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*/
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#ifndef __MTD_FLASHCHIP_H__
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#define __MTD_FLASHCHIP_H__
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/* For spinlocks. sched.h includes spinlock.h from whichever directory it
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* happens to be in - so we don't have to care whether we're on 2.2, which
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* has asm/spinlock.h, or 2.4, which has linux/spinlock.h
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*/
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#include <linux/sched.h>
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typedef enum {
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FL_READY,
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FL_STATUS,
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FL_CFI_QUERY,
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FL_JEDEC_QUERY,
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FL_ERASING,
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FL_ERASE_SUSPENDING,
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FL_ERASE_SUSPENDED,
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FL_WRITING,
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FL_WRITING_TO_BUFFER,
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FL_WRITE_SUSPENDING,
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FL_WRITE_SUSPENDED,
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FL_PM_SUSPENDED,
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FL_SYNCING,
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FL_UNLOADING,
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FL_LOCKING,
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FL_UNLOCKING,
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FL_UNKNOWN
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} flstate_t;
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/* NOTE: confusingly, this can be used to refer to more than one chip at a time,
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if they're interleaved. */
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struct flchip {
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unsigned long start; /* Offset within the map */
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// unsigned long len;
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/* We omit len for now, because when we group them together
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we insist that they're all of the same size, and the chip size
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is held in the next level up. If we get more versatile later,
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it'll make it a damn sight harder to find which chip we want from
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a given offset, and we'll want to add the per-chip length field
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back in.
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*/
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flstate_t state;
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flstate_t oldstate;
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spinlock_t *mutex;
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spinlock_t _spinlock; /* We do it like this because sometimes they'll be shared. */
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wait_queue_head_t wq; /* Wait on here when we're waiting for the chip
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to be ready */
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int word_write_time;
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int buffer_write_time;
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int erase_time;
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};
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#endif /* __MTD_FLASHCHIP_H__ */
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