jedec_probe.c

基于linux-2.6.28的mtd驱动

/*
   Common Flash Interface probe code.
   (C) 2000 Red Hat. GPL'd.
   See JEDEC (http://www.jedec.org/) standard JESD21C (section 3.5)
   for the standard this probe goes back to.

   Occasionally maintained by Thayne Harbaugh tharbaugh at lnxi dot com
*/

#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/cfi.h>
#include <linux/mtd/gen_probe.h>

/* Manufacturers */
#define MANUFACTURER_AMD	0x0001
#define MANUFACTURER_ATMEL	0x001f
#define MANUFACTURER_EON	0x001c
#define MANUFACTURER_FUJITSU	0x0004
#define MANUFACTURER_HYUNDAI	0x00AD
#define MANUFACTURER_INTEL	0x0089
#define MANUFACTURER_MACRONIX	0x00C2
#define MANUFACTURER_NEC	0x0010
#define MANUFACTURER_PMC	0x009D
#define MANUFACTURER_SHARP	0x00b0
#define MANUFACTURER_SST	0x00BF
#define MANUFACTURER_ST		0x0020
#define MANUFACTURER_TOSHIBA	0x0098
#define MANUFACTURER_WINBOND	0x00da
#define CONTINUATION_CODE	0x007f


/* AMD */
#define AM29DL800BB	0x22CB
#define AM29DL800BT	0x224A

#define AM29F800BB	0x2258
#define AM29F800BT	0x22D6
#define AM29LV400BB	0x22BA
#define AM29LV400BT	0x22B9
#define AM29LV800BB	0x225B
#define AM29LV800BT	0x22DA
#define AM29LV160DT	0x22C4
#define AM29LV160DB	0x2249
#define AM29F017D	0x003D
#define AM29F016D	0x00AD
#define AM29F080	0x00D5
#define AM29F040	0x00A4
#define AM29LV040B	0x004F
#define AM29F032B	0x0041
#define AM29F002T	0x00B0
#define AM29SL800DB	0x226B
#define AM29SL800DT	0x22EA

/* Atmel */
#define AT49BV512	0x0003
#define AT29LV512	0x003d
#define AT49BV16X	0x00C0
#define AT49BV16XT	0x00C2
#define AT49BV32X	0x00C8
#define AT49BV32XT	0x00C9

/* Eon */
#define EN29SL800BB	0x226B
#define EN29SL800BT	0x22EA

/* Fujitsu */
#define MBM29F040C	0x00A4
#define MBM29F800BA	0x2258
#define MBM29LV650UE	0x22D7
#define MBM29LV320TE	0x22F6
#define MBM29LV320BE	0x22F9
#define MBM29LV160TE	0x22C4
#define MBM29LV160BE	0x2249
#define MBM29LV800BA	0x225B
#define MBM29LV800TA	0x22DA
#define MBM29LV400TC	0x22B9
#define MBM29LV400BC	0x22BA

/* Hyundai */
#define HY29F002T	0x00B0

/* Intel */
#define I28F004B3T	0x00d4
#define I28F004B3B	0x00d5
#define I28F400B3T	0x8894
#define I28F400B3B	0x8895
#define I28F008S5	0x00a6
#define I28F016S5	0x00a0
#define I28F008SA	0x00a2
#define I28F008B3T	0x00d2
#define I28F008B3B	0x00d3
#define I28F800B3T	0x8892
#define I28F800B3B	0x8893
#define I28F016S3	0x00aa
#define I28F016B3T	0x00d0
#define I28F016B3B	0x00d1
#define I28F160B3T	0x8890
#define I28F160B3B	0x8891
#define I28F320B3T	0x8896
#define I28F320B3B	0x8897
#define I28F640B3T	0x8898
#define I28F640B3B	0x8899
#define I82802AB	0x00ad
#define I82802AC	0x00ac

/* Macronix */
#define MX29LV040C	0x004F
#define MX29LV160T	0x22C4
#define MX29LV160B	0x2249
#define MX29F040	0x00A4
#define MX29F016	0x00AD
#define MX29F002T	0x00B0
#define MX29F004T	0x0045
#define MX29F004B	0x0046

/* NEC */
#define UPD29F064115	0x221C

/* PMC */
#define PM49FL002	0x006D
#define PM49FL004	0x006E
#define PM49FL008	0x006A

/* Sharp */
#define LH28F640BF	0x00b0

/* ST - www.st.com */
#define M29F800AB	0x0058
#define M29W800DT	0x00D7
#define M29W800DB	0x005B
#define M29W400DT	0x00EE
#define M29W400DB	0x00EF
#define M29W160DT	0x22C4
#define M29W160DB	0x2249
#define M29W040B	0x00E3
#define M50FW040	0x002C
#define M50FW080	0x002D
#define M50FW016	0x002E
#define M50LPW080       0x002F
#define M50FLW080A	0x0080
#define M50FLW080B	0x0081

/* SST */
#define SST29EE020	0x0010
#define SST29LE020	0x0012
#define SST29EE512	0x005d
#define SST29LE512	0x003d
#define SST39LF800	0x2781
#define SST39LF160	0x2782
#define SST39VF1601	0x234b
#define SST39LF512	0x00D4
#define SST39LF010	0x00D5
#define SST39LF020	0x00D6
#define SST39LF040	0x00D7
#define SST39SF010A	0x00B5
#define SST39SF020A	0x00B6
#define SST49LF004B	0x0060
#define SST49LF040B	0x0050
#define SST49LF008A	0x005a
#define SST49LF030A	0x001C
#define SST49LF040A	0x0051
#define SST49LF080A	0x005B
#define SST36VF3203	0x7354

/* Toshiba */
#define TC58FVT160	0x00C2
#define TC58FVB160	0x0043
#define TC58FVT321	0x009A
#define TC58FVB321	0x009C
#define TC58FVT641	0x0093
#define TC58FVB641	0x0095

/* Winbond */
#define W49V002A	0x00b0


/*
 * Unlock address sets for AMD command sets.
 * Intel command sets use the MTD_UADDR_UNNECESSARY.
 * Each identifier, except MTD_UADDR_UNNECESSARY, and
 * MTD_UADDR_NO_SUPPORT must be defined below in unlock_addrs[].
 * MTD_UADDR_NOT_SUPPORTED must be 0 so that structure
 * initialization need not require initializing all of the
 * unlock addresses for all bit widths.
 */
enum uaddr {
	MTD_UADDR_NOT_SUPPORTED = 0,	/* data width not supported */
	MTD_UADDR_0x0555_0x02AA,
	MTD_UADDR_0x0555_0x0AAA,
	MTD_UADDR_0x5555_0x2AAA,
	MTD_UADDR_0x0AAA_0x0555,
	MTD_UADDR_0xAAAA_0x5555,
	MTD_UADDR_DONT_CARE,		/* Requires an arbitrary address */
	MTD_UADDR_UNNECESSARY,		/* Does not require any address */
};


struct unlock_addr {
	uint32_t addr1;
	uint32_t addr2;
};


/*
 * I don't like the fact that the first entry in unlock_addrs[]
 * exists, but is for MTD_UADDR_NOT_SUPPORTED - and, therefore,
 * should not be used.  The  problem is that structures with
 * initializers have extra fields initialized to 0.  It is _very_
 * desireable to have the unlock address entries for unsupported
 * data widths automatically initialized - that means that
 * MTD_UADDR_NOT_SUPPORTED must be 0 and the first entry here
 * must go unused.
 */
static const struct unlock_addr  unlock_addrs[] = {
	[MTD_UADDR_NOT_SUPPORTED] = {
		.addr1 = 0xffff,
		.addr2 = 0xffff
	},

	[MTD_UADDR_0x0555_0x02AA] = {
		.addr1 = 0x0555,
		.addr2 = 0x02aa
	},

	[MTD_UADDR_0x0555_0x0AAA] = {
		.addr1 = 0x0555,
		.addr2 = 0x0aaa
	},

	[MTD_UADDR_0x5555_0x2AAA] = {
		.addr1 = 0x5555,
		.addr2 = 0x2aaa
	},

	[MTD_UADDR_0x0AAA_0x0555] = {
		.addr1 = 0x0AAA,
		.addr2 = 0x0555
	},

	[MTD_UADDR_0xAAAA_0x5555] = {
		.addr1 = 0xaaaa,
		.addr2 = 0x5555
	},

	[MTD_UADDR_DONT_CARE] = {
		.addr1 = 0x0000,      /* Doesn't matter which address */
		.addr2 = 0x0000       /* is used - must be last entry */
	},

	[MTD_UADDR_UNNECESSARY] = {
		.addr1 = 0x0000,
		.addr2 = 0x0000
	}
};

struct amd_flash_info {
	const char *name;
	const uint16_t mfr_id;
	const uint16_t dev_id;
	const uint8_t dev_size;
	const uint8_t nr_regions;
	const uint16_t cmd_set;
	const uint32_t regions[6];
	const uint8_t devtypes;		/* Bitmask for x8, x16 etc. */
	const uint8_t uaddr;		/* unlock addrs for 8, 16, 32, 64 */
};

#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)

#define SIZE_64KiB  16
#define SIZE_128KiB 17
#define SIZE_256KiB 18
#define SIZE_512KiB 19
#define SIZE_1MiB   20
#define SIZE_2MiB   21
#define SIZE_4MiB   22
#define SIZE_8MiB   23


/*
 * Please keep this list ordered by manufacturer!
 * Fortunately, the list isn't searched often and so a
 * slow, linear search isn't so bad.
 */
static const struct amd_flash_info jedec_table[] = {
	{
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F032B,
		.name		= "AMD AM29F032B",
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.devtypes	= CFI_DEVICETYPE_X8,
		.dev_size	= SIZE_4MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,64)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV160DT,
		.name		= "AMD AM29LV160DT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_2MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,31),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV160DB,
		.name		= "AMD AM29LV160DB",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_2MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x04000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x10000,31)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV400BB,
		.name		= "AMD AM29LV400BB",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_512KiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x04000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x10000,7)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV400BT,
		.name		= "AMD AM29LV400BT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_512KiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,7),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV800BB,
		.name		= "AMD AM29LV800BB",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x04000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x10000,15),
		}
	}, {
/* add DL */
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29DL800BB,
		.name		= "AMD AM29DL800BB",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 6,
		.regions	= {
			ERASEINFO(0x04000,1),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,4),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x04000,1),
			ERASEINFO(0x10000,14)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29DL800BT,
		.name		= "AMD AM29DL800BT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 6,
		.regions	= {
			ERASEINFO(0x10000,14),
			ERASEINFO(0x04000,1),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,4),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x04000,1)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F800BB,
		.name		= "AMD AM29F800BB",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x04000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x10000,15),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV800BT,
		.name		= "AMD AM29LV800BT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,15),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F800BT,
		.name		= "AMD AM29F800BT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,15),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1)
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F017D,
		.name		= "AMD AM29F017D",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_DONT_CARE,
		.dev_size	= SIZE_2MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,32),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F016D,
		.name		= "AMD AM29F016D",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.dev_size	= SIZE_2MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,32),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F080,
		.name		= "AMD AM29F080",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,16),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F040,
		.name		= "AMD AM29F040",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.dev_size	= SIZE_512KiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,8),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29LV040B,
		.name		= "AMD AM29LV040B",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.dev_size	= SIZE_512KiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 1,
		.regions	= {
			ERASEINFO(0x10000,8),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29F002T,
		.name		= "AMD AM29F002T",
		.devtypes	= CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0555_0x02AA,
		.dev_size	= SIZE_256KiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,3),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1),
		}
	}, {
		.mfr_id		= MANUFACTURER_AMD,
		.dev_id		= AM29SL800DT,
		.name		= "AMD AM29SL800DT",
		.devtypes	= CFI_DEVICETYPE_X16|CFI_DEVICETYPE_X8,
		.uaddr		= MTD_UADDR_0x0AAA_0x0555,
		.dev_size	= SIZE_1MiB,
		.cmd_set	= P_ID_AMD_STD,
		.nr_regions	= 4,
		.regions	= {
			ERASEINFO(0x10000,15),
			ERASEINFO(0x08000,1),
			ERASEINFO(0x02000,2),
			ERASEINFO(0x04000,1),
		}