[deliverable/linux.git] / drivers / mtd / chips / cfi_probe.c

/*
   Common Flash Interface probe code.
   (C) 2000 Red Hat. GPL'd.
   $Id: cfi_probe.c,v 1.85 2005/11/15 23:28:17 tpoynor Exp $
*/

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

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

//#define DEBUG_CFI

#ifdef DEBUG_CFI
static void print_cfi_ident(struct cfi_ident *);
#endif

static int cfi_probe_chip(struct map_info *map, __u32 base,
			  unsigned long *chip_map, struct cfi_private *cfi);
static int cfi_chip_setup(struct map_info *map, struct cfi_private *cfi);

struct mtd_info *cfi_probe(struct map_info *map);

#ifdef CONFIG_MTD_XIP

/* only needed for short periods, so this is rather simple */
#define xip_disable()	local_irq_disable()

#define xip_allowed(base, map) \
do { \
	(void) map_read(map, base); \
	asm volatile (".rep 8; nop; .endr"); \
	local_irq_enable(); \
} while (0)

#define xip_enable(base, map, cfi) \
do { \
	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \
	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \
	xip_allowed(base, map); \
} while (0)

#define xip_disable_qry(base, map, cfi) \
do { \
	xip_disable(); \
	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \
	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \
	cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL); \
} while (0)

#else

#define xip_disable()			do { } while (0)
#define xip_allowed(base, map)		do { } while (0)
#define xip_enable(base, map, cfi)	do { } while (0)
#define xip_disable_qry(base, map, cfi) do { } while (0)

#endif

/* check for QRY.
   in: interleave,type,mode
   ret: table index, <0 for error
 */
static int __xipram qry_present(struct map_info *map, __u32 base,
				struct cfi_private *cfi)
{
	int osf = cfi->interleave * cfi->device_type;	// scale factor
	map_word val[3];
	map_word qry[3];

	qry[0] = cfi_build_cmd('Q', map, cfi);
	qry[1] = cfi_build_cmd('R', map, cfi);
	qry[2] = cfi_build_cmd('Y', map, cfi);

	val[0] = map_read(map, base + osf*0x10);
	val[1] = map_read(map, base + osf*0x11);
	val[2] = map_read(map, base + osf*0x12);

	if (!map_word_equal(map, qry[0], val[0]))
		return 0;

	if (!map_word_equal(map, qry[1], val[1]))
		return 0;

	if (!map_word_equal(map, qry[2], val[2]))
		return 0;

	return 1; 	// "QRY" found
}

static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
				   unsigned long *chip_map, struct cfi_private *cfi)
{
	int i;

	if ((base + 0) >= map->size) {
		printk(KERN_NOTICE
			"Probe at base[0x00](0x%08lx) past the end of the map(0x%08lx)\n",
			(unsigned long)base, map->size -1);
		return 0;
	}
	if ((base + 0xff) >= map->size) {
		printk(KERN_NOTICE
			"Probe at base[0x55](0x%08lx) past the end of the map(0x%08lx)\n",
			(unsigned long)base + 0x55, map->size -1);
		return 0;
	}

	xip_disable();
	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL);

	if (!qry_present(map,base,cfi)) {
		xip_enable(base, map, cfi);
		return 0;
	}

	if (!cfi->numchips) {
		/* This is the first time we're called. Set up the CFI
		   stuff accordingly and return */
		return cfi_chip_setup(map, cfi);
	}

	/* Check each previous chip to see if it's an alias */
 	for (i=0; i < (base >> cfi->chipshift); i++) {
 		unsigned long start;
 		if(!test_bit(i, chip_map)) {
			/* Skip location; no valid chip at this address */
 			continue;
 		}
 		start = i << cfi->chipshift;
		/* This chip should be in read mode if it's one
		   we've already touched. */
		if (qry_present(map, start, cfi)) {
			/* Eep. This chip also had the QRY marker.
			 * Is it an alias for the new one? */
			cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL);
			cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);

			/* If the QRY marker goes away, it's an alias */
			if (!qry_present(map, start, cfi)) {
				xip_allowed(base, map);
				printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
				       map->name, base, start);
				return 0;
			}
			/* Yes, it's actually got QRY for data. Most
			 * unfortunate. Stick the new chip in read mode
			 * too and if it's the same, assume it's an alias. */
			/* FIXME: Use other modes to do a proper check */
			cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
			cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);

			if (qry_present(map, base, cfi)) {
				xip_allowed(base, map);
				printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
				       map->name, base, start);
				return 0;
			}
		}
	}

	/* OK, if we got to here, then none of the previous chips appear to
	   be aliases for the current one. */
	set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */
	cfi->numchips++;

	/* Put it back into Read Mode */
	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	xip_allowed(base, map);

	printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
	       map->name, cfi->interleave, cfi->device_type*8, base,
	       map->bankwidth*8);

	return 1;
}

static int __xipram cfi_chip_setup(struct map_info *map,
				   struct cfi_private *cfi)
{
	int ofs_factor = cfi->interleave*cfi->device_type;
	__u32 base = 0;
	int num_erase_regions = cfi_read_query(map, base + (0x10 + 28)*ofs_factor);
	int i;

	xip_enable(base, map, cfi);
#ifdef DEBUG_CFI
	printk("Number of erase regions: %d\n", num_erase_regions);
#endif
	if (!num_erase_regions)
		return 0;

	cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL);
	if (!cfi->cfiq) {
		printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
		return 0;
	}

	memset(cfi->cfiq,0,sizeof(struct cfi_ident));

	cfi->cfi_mode = CFI_MODE_CFI;

	/* Read the CFI info structure */
	xip_disable_qry(base, map, cfi);
	for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++)
		((unsigned char *)cfi->cfiq)[i] = cfi_read_query(map,base + (0x10 + i)*ofs_factor);

	/* Note we put the device back into Read Mode BEFORE going into Auto
	 * Select Mode, as some devices support nesting of modes, others
	 * don't. This way should always work.
	 * On cmdset 0001 the writes of 0xaa and 0x55 are not needed, and
	 * so should be treated as nops or illegal (and so put the device
	 * back into Read Mode, which is a nop in this case).
	 */
	cfi_send_gen_cmd(0xf0,     0, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0xaa, 0x555, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL);
	cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL);
	cfi->mfr = cfi_read_query16(map, base);
	cfi->id = cfi_read_query16(map, base + ofs_factor);

	/* Put it back into Read Mode */
	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	/* ... even if it's an Intel chip */
	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	xip_allowed(base, map);

	/* Do any necessary byteswapping */
	cfi->cfiq->P_ID = le16_to_cpu(cfi->cfiq->P_ID);

	cfi->cfiq->P_ADR = le16_to_cpu(cfi->cfiq->P_ADR);
	cfi->cfiq->A_ID = le16_to_cpu(cfi->cfiq->A_ID);
	cfi->cfiq->A_ADR = le16_to_cpu(cfi->cfiq->A_ADR);
	cfi->cfiq->InterfaceDesc = le16_to_cpu(cfi->cfiq->InterfaceDesc);
	cfi->cfiq->MaxBufWriteSize = le16_to_cpu(cfi->cfiq->MaxBufWriteSize);

#ifdef DEBUG_CFI
	/* Dump the information therein */
	print_cfi_ident(cfi->cfiq);
#endif

	for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
		cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]);

#ifdef DEBUG_CFI
		printk("  Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n",
		       i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff,
		       (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1);
#endif
	}

	printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
	       map->name, cfi->interleave, cfi->device_type*8, base,
	       map->bankwidth*8);

	return 1;
}

#ifdef DEBUG_CFI
static char *vendorname(__u16 vendor)
{
	switch (vendor) {
	case P_ID_NONE:
		return "None";

	case P_ID_INTEL_EXT:
		return "Intel/Sharp Extended";

	case P_ID_AMD_STD:
		return "AMD/Fujitsu Standard";

	case P_ID_INTEL_STD:
		return "Intel/Sharp Standard";

	case P_ID_AMD_EXT:
		return "AMD/Fujitsu Extended";

	case P_ID_WINBOND:
		return "Winbond Standard";

	case P_ID_ST_ADV:
		return "ST Advanced";

	case P_ID_MITSUBISHI_STD:
		return "Mitsubishi Standard";

	case P_ID_MITSUBISHI_EXT:
		return "Mitsubishi Extended";

	case P_ID_SST_PAGE:
		return "SST Page Write";

	case P_ID_INTEL_PERFORMANCE:
		return "Intel Performance Code";

	case P_ID_INTEL_DATA:
		return "Intel Data";

	case P_ID_RESERVED:
		return "Not Allowed / Reserved for Future Use";

	default:
		return "Unknown";
	}
}


static void print_cfi_ident(struct cfi_ident *cfip)
{
#if 0
	if (cfip->qry[0] != 'Q' || cfip->qry[1] != 'R' || cfip->qry[2] != 'Y') {
		printk("Invalid CFI ident structure.\n");
		return;
	}
#endif
	printk("Primary Vendor Command Set: %4.4X (%s)\n", cfip->P_ID, vendorname(cfip->P_ID));
	if (cfip->P_ADR)
		printk("Primary Algorithm Table at %4.4X\n", cfip->P_ADR);
	else
		printk("No Primary Algorithm Table\n");

	printk("Alternative Vendor Command Set: %4.4X (%s)\n", cfip->A_ID, vendorname(cfip->A_ID));
	if (cfip->A_ADR)
		printk("Alternate Algorithm Table at %4.4X\n", cfip->A_ADR);
	else
		printk("No Alternate Algorithm Table\n");


	printk("Vcc Minimum: %2d.%d V\n", cfip->VccMin >> 4, cfip->VccMin & 0xf);
	printk("Vcc Maximum: %2d.%d V\n", cfip->VccMax >> 4, cfip->VccMax & 0xf);
	if (cfip->VppMin) {
		printk("Vpp Minimum: %2d.%d V\n", cfip->VppMin >> 4, cfip->VppMin & 0xf);
		printk("Vpp Maximum: %2d.%d V\n", cfip->VppMax >> 4, cfip->VppMax & 0xf);
	}
	else
		printk("No Vpp line\n");
Commit	Line	Data
1f948b43	1	/*
1da177e4 LT	2	Common Flash Interface probe code.
1da177e4 LT	3	(C) 2000 Red Hat. GPL'd.
987d2401	4	$Id: cfi_probe.c,v 1.85 2005/11/15 23:28:17 tpoynor Exp $
1da177e4 LT	5	*/
	6
	7	#include <linux/config.h>
	8	#include <linux/module.h>
	9	#include <linux/types.h>
	10	#include <linux/kernel.h>
	11	#include <linux/init.h>
	12	#include <asm/io.h>
	13	#include <asm/byteorder.h>
	14	#include <linux/errno.h>
	15	#include <linux/slab.h>
	16	#include <linux/interrupt.h>
	17
	18	#include <linux/mtd/xip.h>
	19	#include <linux/mtd/map.h>
	20	#include <linux/mtd/cfi.h>
	21	#include <linux/mtd/gen_probe.h>
	22
1f948b43	23	//#define DEBUG_CFI
1da177e4 LT	24
	25	#ifdef DEBUG_CFI
	26	static void print_cfi_ident(struct cfi_ident *);
	27	#endif
	28
	29	static int cfi_probe_chip(struct map_info *map, __u32 base,
	30	unsigned long chip_map, struct cfi_private cfi);
	31	static int cfi_chip_setup(struct map_info map, struct cfi_private cfi);
	32
	33	struct mtd_info cfi_probe(struct map_info map);
	34
	35	#ifdef CONFIG_MTD_XIP
	36
	37	/* only needed for short periods, so this is rather simple */
	38	#define xip_disable() local_irq_disable()
	39
	40	#define xip_allowed(base, map) \
	41	do { \
	42	(void) map_read(map, base); \
	43	asm volatile (".rep 8; nop; .endr"); \
	44	local_irq_enable(); \
	45	} while (0)
	46
	47	#define xip_enable(base, map, cfi) \
	48	do { \
	49	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \
	50	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \
	51	xip_allowed(base, map); \
	52	} while (0)
	53
	54	#define xip_disable_qry(base, map, cfi) \
	55	do { \
	56	xip_disable(); \
	57	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); \
	58	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); \
	59	cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL); \
	60	} while (0)
	61
	62	#else
	63
	64	#define xip_disable() do { } while (0)
	65	#define xip_allowed(base, map) do { } while (0)
	66	#define xip_enable(base, map, cfi) do { } while (0)
	67	#define xip_disable_qry(base, map, cfi) do { } while (0)
	68
	69	#endif
	70
	71	/* check for QRY.
	72	in: interleave,type,mode
	73	ret: table index, <0 for error
	74	*/
	75	static int __xipram qry_present(struct map_info *map, __u32 base,
	76	struct cfi_private *cfi)
	77	{
	78	int osf = cfi->interleave * cfi->device_type; // scale factor
	79	map_word val[3];
	80	map_word qry[3];
	81
	82	qry[0] = cfi_build_cmd('Q', map, cfi);
	83	qry[1] = cfi_build_cmd('R', map, cfi);
	84	qry[2] = cfi_build_cmd('Y', map, cfi);
	85
	86	val[0] = map_read(map, base + osf*0x10);
	87	val[1] = map_read(map, base + osf*0x11);
88	val[2] = map_read(map, base + osf*0x12);
89
90	if (!map_word_equal(map, qry[0], val[0]))
91	return 0;
92
93	if (!map_word_equal(map, qry[1], val[1]))
94	return 0;
95
96	if (!map_word_equal(map, qry[2], val[2]))
97	return 0;
98
99	return 1; // "QRY" found
100	}
101
102	static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
103	unsigned long chip_map, struct cfi_private cfi)
104	{
105	int i;
1f948b43	106
1da177e4 LT	107	if ((base + 0) >= map->size) {
	108	printk(KERN_NOTICE
	109	"Probe at base[0x00](0x%08lx) past the end of the map(0x%08lx)\n",
	110	(unsigned long)base, map->size -1);
	111	return 0;
	112	}
	113	if ((base + 0xff) >= map->size) {
	114	printk(KERN_NOTICE
	115	"Probe at base[0x55](0x%08lx) past the end of the map(0x%08lx)\n",
	116	(unsigned long)base + 0x55, map->size -1);
	117	return 0;
	118	}
	119
	120	xip_disable();
	121	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	122	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	123	cfi_send_gen_cmd(0x98, 0x55, base, map, cfi, cfi->device_type, NULL);
	124
	125	if (!qry_present(map,base,cfi)) {
	126	xip_enable(base, map, cfi);
	127	return 0;
	128	}
	129
	130	if (!cfi->numchips) {
1f948b43	131	/* This is the first time we're called. Set up the CFI
1da177e4 LT	132	stuff accordingly and return */
	133	return cfi_chip_setup(map, cfi);
	134	}
	135
	136	/* Check each previous chip to see if it's an alias */
	137	for (i=0; i < (base >> cfi->chipshift); i++) {
	138	unsigned long start;
	139	if(!test_bit(i, chip_map)) {
	140	/* Skip location; no valid chip at this address */
1f948b43	141	continue;
1da177e4 LT	142	}
	143	start = i << cfi->chipshift;
	144	/* This chip should be in read mode if it's one
	145	we've already touched. */
	146	if (qry_present(map, start, cfi)) {
1f948b43	147	/* Eep. This chip also had the QRY marker.
1da177e4 LT	148	* Is it an alias for the new one? */
	149	cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL);
	150	cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);
	151
	152	/* If the QRY marker goes away, it's an alias */
	153	if (!qry_present(map, start, cfi)) {
	154	xip_allowed(base, map);
	155	printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
	156	map->name, base, start);
	157	return 0;
	158	}
1f948b43	159	/* Yes, it's actually got QRY for data. Most
1da177e4 LT	160	* unfortunate. Stick the new chip in read mode
	161	* too and if it's the same, assume it's an alias. */
	162	/* FIXME: Use other modes to do a proper check */
	163	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	164	cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);
1f948b43	165
1da177e4 LT	166	if (qry_present(map, base, cfi)) {
	167	xip_allowed(base, map);
	168	printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
	169	map->name, base, start);
	170	return 0;
	171	}
	172	}
	173	}
1f948b43	174
1da177e4 LT	175	/* OK, if we got to here, then none of the previous chips appear to
	176	be aliases for the current one. */
	177	set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */
	178	cfi->numchips++;
1f948b43	179
1da177e4 LT	180	/* Put it back into Read Mode */
	181	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	182	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	183	xip_allowed(base, map);
	184
	185	printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
	186	map->name, cfi->interleave, cfi->device_type*8, base,
	187	map->bankwidth*8);
1f948b43	188
1da177e4 LT	189	return 1;
	190	}
	191
1f948b43	192	static int __xipram cfi_chip_setup(struct map_info *map,
1da177e4 LT	193	struct cfi_private *cfi)
	194	{
	195	int ofs_factor = cfi->interleave*cfi->device_type;
	196	__u32 base = 0;
	197	int num_erase_regions = cfi_read_query(map, base + (0x10 + 28)*ofs_factor);
	198	int i;
	199
	200	xip_enable(base, map, cfi);
	201	#ifdef DEBUG_CFI
	202	printk("Number of erase regions: %d\n", num_erase_regions);
	203	#endif
	204	if (!num_erase_regions)
	205	return 0;
	206
	207	cfi->cfiq = kmalloc(sizeof(struct cfi_ident) + num_erase_regions * 4, GFP_KERNEL);
	208	if (!cfi->cfiq) {
	209	printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
	210	return 0;
	211	}
1f948b43 TG	212
	213	memset(cfi->cfiq,0,sizeof(struct cfi_ident));
	214
1da177e4	215	cfi->cfi_mode = CFI_MODE_CFI;
1f948b43	216
1da177e4 LT	217	/* Read the CFI info structure */
	218	xip_disable_qry(base, map, cfi);
	219	for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++)
	220	((unsigned char )cfi->cfiq)[i] = cfi_read_query(map,base + (0x10 + i)ofs_factor);
	221
	222	/* Note we put the device back into Read Mode BEFORE going into Auto
	223	* Select Mode, as some devices support nesting of modes, others
	224	* don't. This way should always work.
	225	* On cmdset 0001 the writes of 0xaa and 0x55 are not needed, and
	226	* so should be treated as nops or illegal (and so put the device
	227	* back into Read Mode, which is a nop in this case).
	228	*/
	229	cfi_send_gen_cmd(0xf0, 0, base, map, cfi, cfi->device_type, NULL);
	230	cfi_send_gen_cmd(0xaa, 0x555, base, map, cfi, cfi->device_type, NULL);
	231	cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL);
	232	cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL);
987d2401 TP	233	cfi->mfr = cfi_read_query16(map, base);
987d2401 TP	234	cfi->id = cfi_read_query16(map, base + ofs_factor);
1da177e4 LT	235
	236	/* Put it back into Read Mode */
	237	cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
	238	/* ... even if it's an Intel chip */
	239	cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
	240	xip_allowed(base, map);
	241
	242	/* Do any necessary byteswapping */
	243	cfi->cfiq->P_ID = le16_to_cpu(cfi->cfiq->P_ID);
	244
	245	cfi->cfiq->P_ADR = le16_to_cpu(cfi->cfiq->P_ADR);
	246	cfi->cfiq->A_ID = le16_to_cpu(cfi->cfiq->A_ID);
	247	cfi->cfiq->A_ADR = le16_to_cpu(cfi->cfiq->A_ADR);
	248	cfi->cfiq->InterfaceDesc = le16_to_cpu(cfi->cfiq->InterfaceDesc);
	249	cfi->cfiq->MaxBufWriteSize = le16_to_cpu(cfi->cfiq->MaxBufWriteSize);
	250
	251	#ifdef DEBUG_CFI
	252	/* Dump the information therein */
	253	print_cfi_ident(cfi->cfiq);
	254	#endif
	255
	256	for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
	257	cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]);
1f948b43 TG	258
1f948b43 TG	259	#ifdef DEBUG_CFI
1da177e4	260	printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n",
1f948b43	261	i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff,
1da177e4 LT	262	(cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1);
	263	#endif
	264	}
	265
	266	printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
	267	map->name, cfi->interleave, cfi->device_type*8, base,
	268	map->bankwidth*8);
	269
	270	return 1;
	271	}
	272
	273	#ifdef DEBUG_CFI
1f948b43	274	static char *vendorname(__u16 vendor)
1da177e4 LT	275	{
	276	switch (vendor) {
	277	case P_ID_NONE:
	278	return "None";
1f948b43	279
1da177e4 LT	280	case P_ID_INTEL_EXT:
1da177e4 LT	281	return "Intel/Sharp Extended";
1f948b43	282
1da177e4 LT	283	case P_ID_AMD_STD:
1da177e4 LT	284	return "AMD/Fujitsu Standard";
1f948b43	285
1da177e4 LT	286	case P_ID_INTEL_STD:
1da177e4 LT	287	return "Intel/Sharp Standard";
1f948b43	288
1da177e4 LT	289	case P_ID_AMD_EXT:
	290	return "AMD/Fujitsu Extended";
	291
	292	case P_ID_WINBOND:
	293	return "Winbond Standard";
1f948b43	294
1da177e4 LT	295	case P_ID_ST_ADV:
	296	return "ST Advanced";
	297
	298	case P_ID_MITSUBISHI_STD:
	299	return "Mitsubishi Standard";
1f948b43	300
1da177e4 LT	301	case P_ID_MITSUBISHI_EXT:
	302	return "Mitsubishi Extended";
	303
	304	case P_ID_SST_PAGE:
	305	return "SST Page Write";
	306
	307	case P_ID_INTEL_PERFORMANCE:
	308	return "Intel Performance Code";
1f948b43	309
1da177e4 LT	310	case P_ID_INTEL_DATA:
1da177e4 LT	311	return "Intel Data";
1f948b43	312
1da177e4 LT	313	case P_ID_RESERVED:
1da177e4 LT	314	return "Not Allowed / Reserved for Future Use";
1f948b43	315
1da177e4 LT	316	default:
	317	return "Unknown";
	318	}
	319	}
	320
	321
	322	static void print_cfi_ident(struct cfi_ident *cfip)
	323	{
	324	#if 0
	325	if (cfip->qry[0] != 'Q' \|\| cfip->qry[1] != 'R' \|\| cfip->qry[2] != 'Y') {
	326	printk("Invalid CFI ident structure.\n");
	327	return;
1f948b43 TG	328	}
1f948b43 TG	329	#endif
1da177e4 LT	330	printk("Primary Vendor Command Set: %4.4X (%s)\n", cfip->P_ID, vendorname(cfip->P_ID));
	331	if (cfip->P_ADR)
	332	printk("Primary Algorithm Table at %4.4X\n", cfip->P_ADR);
	333	else
	334	printk("No Primary Algorithm Table\n");
1f948b43	335
1da177e4 LT	336	printk("Alternative Vendor Command Set: %4.4X (%s)\n", cfip->A_ID, vendorname(cfip->A_ID));
	337	if (cfip->A_ADR)
	338	printk("Alternate Algorithm Table at %4.4X\n", cfip->A_ADR);
	339	else
	340	printk("No Alternate Algorithm Table\n");
1f948b43 TG	341
1f948b43 TG	342
1da177e4 LT	343	printk("Vcc Minimum: %2d.%d V\n", cfip->VccMin >> 4, cfip->VccMin & 0xf);
	344	printk("Vcc Maximum: %2d.%d V\n", cfip->VccMax >> 4, cfip->VccMax & 0xf);
	345	if (cfip->VppMin) {
	346	printk("Vpp Minimum: %2d.%d V\n", cfip->VppMin >> 4, cfip->VppMin & 0xf);
	347	printk("Vpp Maximum: %2d.%d V\n", cfip->VppMax >> 4, cfip->VppMax & 0xf);
	348	}
	349	else
	350	printk("No Vpp line\n");
1f948b43	351