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/*
 * Copyright © 2000      Red Hat UK Limited
 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifndef __MTD_FLASHCHIP_H__
#define __MTD_FLASHCHIP_H__

/* For spinlocks. sched.h includes spinlock.h from whichever directory it
 * happens to be in - so we don't have to care whether we're on 2.2, which
 * has asm/spinlock.h, or 2.4, which has linux/spinlock.h
 */
#include <linux/sched.h>
#include <linux/mutex.h>

typedef enum {
	FL_READY,
	FL_STATUS,
	FL_CFI_QUERY,
	FL_JEDEC_QUERY,
	FL_ERASING,
	FL_ERASE_SUSPENDING,
	FL_ERASE_SUSPENDED,
	FL_WRITING,
	FL_WRITING_TO_BUFFER,
	FL_OTP_WRITE,
	FL_WRITE_SUSPENDING,
	FL_WRITE_SUSPENDED,
	FL_PM_SUSPENDED,
	FL_SYNCING,
	FL_UNLOADING,
	FL_LOCKING,
	FL_UNLOCKING,
	FL_POINT,
	FL_XIP_WHILE_ERASING,
	FL_XIP_WHILE_WRITING,
	FL_SHUTDOWN,
	/* These 2 come from nand_state_t, which has been unified here */
	FL_READING,
	FL_CACHEDPRG,
	/* These 4 come from onenand_state_t, which has been unified here */
	FL_RESETING,
	FL_OTPING,
	FL_PREPARING_ERASE,
	FL_VERIFYING_ERASE,

	FL_UNKNOWN
} flstate_t;



/* NOTE: confusingly, this can be used to refer to more than one chip at a time,
   if they're interleaved.  This can even refer to individual partitions on
   the same physical chip when present. */

struct flchip {
	unsigned long start; /* Offset within the map */
	//	unsigned long len;
	/* We omit len for now, because when we group them together
	   we insist that they're all of the same size, and the chip size
	   is held in the next level up. If we get more versatile later,
	   it'll make it a damn sight harder to find which chip we want from
	   a given offset, and we'll want to add the per-chip length field
	   back in.
	*/
	int ref_point_counter;
	flstate_t state;
	flstate_t oldstate;

	unsigned int write_suspended:1;
	unsigned int erase_suspended:1;
	unsigned long in_progress_block_addr;
	unsigned long in_progress_block_mask;

	struct mutex mutex;
	wait_queue_head_t wq; /* Wait on here when we're waiting for the chip
			     to be ready */
	int word_write_time;
	int buffer_write_time;
	int erase_time;

	int word_write_time_max;
	int buffer_write_time_max;
	int erase_time_max;

	void *priv;
};

/* This is used to handle contention on write/erase operations
   between partitions of the same physical chip. */
struct flchip_shared {
	struct mutex lock;
	struct flchip *writing;
	struct flchip *erasing;
};


#endif /* __MTD_FLASHCHIP_H__ */

Filemanager

Name Type Size Permission Actions
bbm.h File 5.84 KB 0644
blktrans.h File 2.81 KB 0644
cfi.h File 10.31 KB 0644
cfi_endian.h File 2.13 KB 0644
concat.h File 1.14 KB 0644
doc2000.h File 6.03 KB 0644
flashchip.h File 3.08 KB 0644
ftl.h File 2.49 KB 0644
gen_probe.h File 1.26 KB 0644
inftl.h File 1.56 KB 0644
latch-addr-flash.h File 716 B 0644
lpc32xx_mlc.h File 531 B 0644
lpc32xx_slc.h File 531 B 0644
map.h File 13.37 KB 0644
mtd.h File 19.05 KB 0644
mtdram.h File 257 B 0644
nand-gpio.h File 330 B 0644
nand_bch.h File 1.56 KB 0644
nand_ecc.h File 1.14 KB 0644
ndfc.h File 2.2 KB 0644
nftl.h File 2.35 KB 0644
onenand.h File 7.87 KB 0644
onenand_regs.h File 7.15 KB 0644
partitions.h File 3.75 KB 0644
pfow.h File 5.56 KB 0644
physmap.h File 1 KB 0644
pismo.h File 440 B 0644
plat-ram.h File 817 B 0644
qinfo.h File 2.47 KB 0644
rawnand.h File 41.17 KB 0644
sh_flctl.h File 6.41 KB 0644
sharpsl.h File 587 B 0644
spear_smi.h File 1.67 KB 0644
spi-nor.h File 14.28 KB 0644
super.h File 835 B 0644
ubi.h File 10.33 KB 0644
xip.h File 2.66 KB 0644