/*
* Common Flash Interface support:
* ST Advanced Architecture Command Set (ID 0x0020)
*
* (C) 2000 Red Hat. GPL'd
*
* $Id: cfi_cmdset_0020.c,v 1.22 2005/11/07 11:14:22 gleixner Exp $
*
* 10/10/2000 Nicolas Pitre <nico@cam.org>
* - completely revamped method functions so they are aware and
* independent of the flash geometry (buswidth, interleave, etc.)
* - scalability vs code size is completely set at compile-time
* (see include/linux/mtd/cfi.h for selection)
* - optimized write buffer method
* 06/21/2002 Joern Engel <joern@wh.fh-wedel.de> and others
* - modified Intel Command Set 0x0001 to support ST Advanced Architecture
* (command set 0x0020)
* - added a writev function
* 07/13/2005 Joern Engel <joern@wh.fh-wedel.de>
* - Plugged memory leak in cfi_staa_writev().
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/mtd/map.h>
#include <linux/mtd/cfi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/compatmac.h>
static int cfi_staa_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_staa_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
static int cfi_staa_writev(struct mtd_info *mtd, const struct kvec *vecs,
unsigned long count, loff_t to, size_t *retlen);
static int cfi_staa_erase_varsize(struct mtd_info *, struct erase_info *);
static void cfi_staa_sync (struct mtd_info *);
static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
static int cfi_staa_suspend (struct mtd_info *);
static void cfi_staa_resume (struct mtd_info *);
static void cfi_staa_destroy(struct mtd_info *);
struct mtd_info *cfi_cmdset_0020(struct map_info *, int);
static struct mtd_info *cfi_staa_setup (struct map_info *);
static struct mtd_chip_driver cfi_staa_chipdrv = {
.probe = NULL, /* Not usable directly */
.destroy = cfi_staa_destroy,
.name = "cfi_cmdset_0020",
.module = THIS_MODULE
};
/* #define DEBUG_LOCK_BITS */
//#define DEBUG_CFI_FEATURES
#ifdef DEBUG_CFI_FEATURES
static void cfi_tell_features(struct cfi_pri_intelext *extp)
{
int i;
printk(" Feature/Command Support: %4.4X\n", extp->FeatureSupport);
printk(" - Chip Erase: %s\n", extp->FeatureSupport&1?"supported":"unsupported");
printk(" - Suspend Erase: %s\n", extp->FeatureSupport&2?"supported":"unsupported");
printk(" - Suspend Program: %s\n", extp->FeatureSupport&4?"supported":"unsupported");
printk(" - Legacy Lock/Unlock: %s\n", extp->FeatureSupport&8?"supported":"unsupported");
printk(" - Queued Erase: %s\n", extp->FeatureSupport&16?"supported":"unsupported");
printk(" - Instant block lock: %s\n", extp->FeatureSupport&32?"supported":"unsupported");
printk(" - Protection Bits: %s\n", extp->FeatureSupport&64?"supported":"unsupported");
printk(" - Page-mode read: %s
| 