1 files changed, 0 insertions, 458 deletions

diff --git a/ANDROID_3.4.5/drivers/mtd/ssfdc.c b/ANDROID_3.4.5/drivers/mtd/ssfdc.c
deleted file mode 100644
index ab2a52a0..00000000
--- a/ANDROID_3.4.5/drivers/mtd/ssfdc.c
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * Linux driver for SSFDC Flash Translation Layer (Read only)
- * © 2005 Eptar srl
- * Author: Claudio Lanconelli <lanconelli.claudio@eptar.com>
- *
- * Based on NTFL and MTDBLOCK_RO drivers
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/hdreg.h>
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/blktrans.h>
-
-struct ssfdcr_record {
-	struct mtd_blktrans_dev mbd;
-	int usecount;
-	unsigned char heads;
-	unsigned char sectors;
-	unsigned short cylinders;
-	int cis_block;			/* block n. containing CIS/IDI */
-	int erase_size;			/* phys_block_size */
-	unsigned short *logic_block_map; /* all zones (max 8192 phys blocks on
-					    the 128MiB) */
-	int map_len;			/* n. phys_blocks on the card */
-};
-
-#define SSFDCR_MAJOR		257
-#define SSFDCR_PARTN_BITS	3
-
-#define SECTOR_SIZE		512
-#define SECTOR_SHIFT		9
-#define OOB_SIZE		16
-
-#define MAX_LOGIC_BLK_PER_ZONE	1000
-#define MAX_PHYS_BLK_PER_ZONE	1024
-
-#define KiB(x)	( (x) * 1024L )
-#define MiB(x)	( KiB(x) * 1024L )
-
-/** CHS Table
-		1MiB	2MiB	4MiB	8MiB	16MiB	32MiB	64MiB	128MiB
-NCylinder	125	125	250	250	500	500	500	500
-NHead		4	4	4	4	4	8	8	16
-NSector		4	8	8	16	16	16	32	32
-SumSector	2,000	4,000	8,000	16,000	32,000	64,000	128,000	256,000
-SectorSize	512	512	512	512	512	512	512	512
-**/
-
-typedef struct {
-	unsigned long size;
-	unsigned short cyl;
-	unsigned char head;
-	unsigned char sec;
-} chs_entry_t;
-
-/* Must be ordered by size */
-static const chs_entry_t chs_table[] = {
-	{ MiB(  1), 125,  4,  4 },
-	{ MiB(  2), 125,  4,  8 },
-	{ MiB(  4), 250,  4,  8 },
-	{ MiB(  8), 250,  4, 16 },
-	{ MiB( 16), 500,  4, 16 },
-	{ MiB( 32), 500,  8, 16 },
-	{ MiB( 64), 500,  8, 32 },
-	{ MiB(128), 500, 16, 32 },
-	{ 0 },
-};
-
-static int get_chs(unsigned long size, unsigned short *cyl, unsigned char *head,
-			unsigned char *sec)
-{
-	int k;
-	int found = 0;
-
-	k = 0;
-	while (chs_table[k].size > 0 && size > chs_table[k].size)
-		k++;
-
-	if (chs_table[k].size > 0) {
-		if (cyl)
-			*cyl = chs_table[k].cyl;
-		if (head)
-			*head = chs_table[k].head;
-		if (sec)
-			*sec = chs_table[k].sec;
-		found = 1;
-	}
-
-	return found;
-}
-
-/* These bytes are the signature for the CIS/IDI sector */
-static const uint8_t cis_numbers[] = {
-	0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20
-};
-
-/* Read and check for a valid CIS sector */
-static int get_valid_cis_sector(struct mtd_info *mtd)
-{
-	int ret, k, cis_sector;
-	size_t retlen;
-	loff_t offset;
-	uint8_t *sect_buf;
-
-	cis_sector = -1;
-
-	sect_buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
-	if (!sect_buf)
-		goto out;
-
-	/*
-	 * Look for CIS/IDI sector on the first GOOD block (give up after 4 bad
-	 * blocks). If the first good block doesn't contain CIS number the flash
-	 * is not SSFDC formatted
-	 */
-	for (k = 0, offset = 0; k < 4; k++, offset += mtd->erasesize) {
-		if (mtd_block_isbad(mtd, offset)) {
-			ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen,
-				       sect_buf);
-
-			/* CIS pattern match on the sector buffer */
-			if (ret < 0 || retlen != SECTOR_SIZE) {
-				printk(KERN_WARNING
-					"SSFDC_RO:can't read CIS/IDI sector\n");
-			} else if (!memcmp(sect_buf, cis_numbers,
-					sizeof(cis_numbers))) {
-				/* Found */
-				cis_sector = (int)(offset >> SECTOR_SHIFT);
-			} else {
-				pr_debug("SSFDC_RO: CIS/IDI sector not found"
-					" on %s (mtd%d)\n", mtd->name,
-					mtd->index);
-			}
-			break;
-		}
-	}
-
-	kfree(sect_buf);
- out:
-	return cis_sector;
-}
-
-/* Read physical sector (wrapper to MTD_READ) */
-static int read_physical_sector(struct mtd_info *mtd, uint8_t *sect_buf,
-				int sect_no)
-{
-	int ret;
-	size_t retlen;
-	loff_t offset = (loff_t)sect_no << SECTOR_SHIFT;
-
-	ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen, sect_buf);
-	if (ret < 0 || retlen != SECTOR_SIZE)
-		return -1;
-
-	return 0;
-}
-
-/* Read redundancy area (wrapper to MTD_READ_OOB */
-static int read_raw_oob(struct mtd_info *mtd, loff_t offs, uint8_t *buf)
-{
-	struct mtd_oob_ops ops;
-	int ret;
-
-	ops.mode = MTD_OPS_RAW;
-	ops.ooboffs = 0;
-	ops.ooblen = OOB_SIZE;
-	ops.oobbuf = buf;
-	ops.datbuf = NULL;
-
-	ret = mtd_read_oob(mtd, offs, &ops);
-	if (ret < 0 || ops.oobretlen != OOB_SIZE)
-		return -1;
-
-	return 0;
-}
-
-/* Parity calculator on a word of n bit size */
-static int get_parity(int number, int size)
-{
- 	int k;
-	int parity;
-
-	parity = 1;
-	for (k = 0; k < size; k++) {
-		parity += (number >> k);
-		parity &= 1;
-	}
-	return parity;
-}
-
-/* Read and validate the logical block address field stored in the OOB */
-static int get_logical_address(uint8_t *oob_buf)
-{
-	int block_address, parity;
-	int offset[2] = {6, 11}; /* offset of the 2 address fields within OOB */
-	int j;
-	int ok = 0;
-
-	/*
-	 * Look for the first valid logical address
-	 * Valid address has fixed pattern on most significant bits and
-	 * parity check
-	 */
-	for (j = 0; j < ARRAY_SIZE(offset); j++) {
-		block_address = ((int)oob_buf[offset[j]] << 8) |
-			oob_buf[offset[j]+1];
-
-		/* Check for the signature bits in the address field (MSBits) */
-		if ((block_address & ~0x7FF) == 0x1000) {
-			parity = block_address & 0x01;
-			block_address &= 0x7FF;
-			block_address >>= 1;
-
-			if (get_parity(block_address, 10) != parity) {
-				pr_debug("SSFDC_RO: logical address field%d"
-					"parity error(0x%04X)\n", j+1,
-					block_address);
-			} else {
-				ok = 1;
-				break;
-			}
-		}
-	}
-
-	if (!ok)
-		block_address = -2;
-
-	pr_debug("SSFDC_RO: get_logical_address() %d\n",
-		block_address);
-
-	return block_address;
-}
-
-/* Build the logic block map */
-static int build_logical_block_map(struct ssfdcr_record *ssfdc)
-{
-	unsigned long offset;
-	uint8_t oob_buf[OOB_SIZE];
-	int ret, block_address, phys_block;
-	struct mtd_info *mtd = ssfdc->mbd.mtd;
-
-	pr_debug("SSFDC_RO: build_block_map() nblks=%d (%luK)\n",
-	      ssfdc->map_len,
-	      (unsigned long)ssfdc->map_len * ssfdc->erase_size / 1024);
-
-	/* Scan every physical block, skip CIS block */
-	for (phys_block = ssfdc->cis_block + 1; phys_block < ssfdc->map_len;
-			phys_block++) {
-		offset = (unsigned long)phys_block * ssfdc->erase_size;
-		if (mtd_block_isbad(mtd, offset))
-			continue;	/* skip bad blocks */
-
-		ret = read_raw_oob(mtd, offset, oob_buf);
-		if (ret < 0) {
-			pr_debug("SSFDC_RO: mtd read_oob() failed at %lu\n",
-				offset);
-			return -1;
-		}
-		block_address = get_logical_address(oob_buf);
-
-		/* Skip invalid addresses */
-		if (block_address >= 0 &&
-				block_address < MAX_LOGIC_BLK_PER_ZONE) {
-			int zone_index;
-
-			zone_index = phys_block / MAX_PHYS_BLK_PER_ZONE;
-			block_address += zone_index * MAX_LOGIC_BLK_PER_ZONE;
-			ssfdc->logic_block_map[block_address] =
-				(unsigned short)phys_block;
-
-			pr_debug("SSFDC_RO: build_block_map() phys_block=%d,"
-				"logic_block_addr=%d, zone=%d\n",
-				phys_block, block_address, zone_index);
-		}
-	}
-	return 0;
-}
-
-static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
-{
-	struct ssfdcr_record *ssfdc;
-	int cis_sector;
-
-	/* Check for small page NAND flash */
-	if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE ||
-	    mtd->size > UINT_MAX)
-		return;
-
-	/* Check for SSDFC format by reading CIS/IDI sector */
-	cis_sector = get_valid_cis_sector(mtd);
-	if (cis_sector == -1)
-		return;
-
-	ssfdc = kzalloc(sizeof(struct ssfdcr_record), GFP_KERNEL);
-	if (!ssfdc)
-		return;
-
-	ssfdc->mbd.mtd = mtd;
-	ssfdc->mbd.devnum = -1;
-	ssfdc->mbd.tr = tr;
-	ssfdc->mbd.readonly = 1;
-
-	ssfdc->cis_block = cis_sector / (mtd->erasesize >> SECTOR_SHIFT);
-	ssfdc->erase_size = mtd->erasesize;
-	ssfdc->map_len = (u32)mtd->size / mtd->erasesize;
-
-	pr_debug("SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
-		ssfdc->cis_block, ssfdc->erase_size, ssfdc->map_len,
-		DIV_ROUND_UP(ssfdc->map_len, MAX_PHYS_BLK_PER_ZONE));
-
-	/* Set geometry */
-	ssfdc->heads = 16;
-	ssfdc->sectors = 32;
-	get_chs(mtd->size, NULL, &ssfdc->heads, &ssfdc->sectors);
-	ssfdc->cylinders = (unsigned short)(((u32)mtd->size >> SECTOR_SHIFT) /
-			((long)ssfdc->sectors * (long)ssfdc->heads));
-
-	pr_debug("SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n",
-		ssfdc->cylinders, ssfdc->heads , ssfdc->sectors,
-		(long)ssfdc->cylinders * (long)ssfdc->heads *
-		(long)ssfdc->sectors);
-
-	ssfdc->mbd.size = (long)ssfdc->heads * (long)ssfdc->cylinders *
-				(long)ssfdc->sectors;
-
-	/* Allocate logical block map */
-	ssfdc->logic_block_map = kmalloc(sizeof(ssfdc->logic_block_map[0]) *
-					 ssfdc->map_len, GFP_KERNEL);
-	if (!ssfdc->logic_block_map)
-		goto out_err;
-	memset(ssfdc->logic_block_map, 0xff, sizeof(ssfdc->logic_block_map[0]) *
-		ssfdc->map_len);
-
-	/* Build logical block map */
-	if (build_logical_block_map(ssfdc) < 0)
-		goto out_err;
-
-	/* Register device + partitions */
-	if (add_mtd_blktrans_dev(&ssfdc->mbd))
-		goto out_err;
-
-	printk(KERN_INFO "SSFDC_RO: Found ssfdc%c on mtd%d (%s)\n",
-		ssfdc->mbd.devnum + 'a', mtd->index, mtd->name);
-	return;
-
-out_err:
-	kfree(ssfdc->logic_block_map);
-        kfree(ssfdc);
-}
-
-static void ssfdcr_remove_dev(struct mtd_blktrans_dev *dev)
-{
-	struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev;
-
-	pr_debug("SSFDC_RO: remove_dev (i=%d)\n", dev->devnum);
-
-	del_mtd_blktrans_dev(dev);
-	kfree(ssfdc->logic_block_map);
-}
-
-static int ssfdcr_readsect(struct mtd_blktrans_dev *dev,
-				unsigned long logic_sect_no, char *buf)
-{
-	struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev;
-	int sectors_per_block, offset, block_address;
-
-	sectors_per_block = ssfdc->erase_size >> SECTOR_SHIFT;
-	offset = (int)(logic_sect_no % sectors_per_block);
-	block_address = (int)(logic_sect_no / sectors_per_block);
-
-	pr_debug("SSFDC_RO: ssfdcr_readsect(%lu) sec_per_blk=%d, ofst=%d,"
-		" block_addr=%d\n", logic_sect_no, sectors_per_block, offset,
-		block_address);
-
-	if (block_address >= ssfdc->map_len)
-		BUG();
-
-	block_address = ssfdc->logic_block_map[block_address];
-
-	pr_debug("SSFDC_RO: ssfdcr_readsect() phys_block_addr=%d\n",
-		block_address);
-
-	if (block_address < 0xffff) {
-		unsigned long sect_no;
-
-		sect_no = (unsigned long)block_address * sectors_per_block +
-				offset;
-
-		pr_debug("SSFDC_RO: ssfdcr_readsect() phys_sect_no=%lu\n",
-			sect_no);
-
-		if (read_physical_sector(ssfdc->mbd.mtd, buf, sect_no) < 0)
-			return -EIO;
-	} else {
-		memset(buf, 0xff, SECTOR_SIZE);
-	}
-
-	return 0;
-}
-
-static int ssfdcr_getgeo(struct mtd_blktrans_dev *dev,  struct hd_geometry *geo)
-{
-	struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev;
-
-	pr_debug("SSFDC_RO: ssfdcr_getgeo() C=%d, H=%d, S=%d\n",
-			ssfdc->cylinders, ssfdc->heads, ssfdc->sectors);
-
-	geo->heads = ssfdc->heads;
-	geo->sectors = ssfdc->sectors;
-	geo->cylinders = ssfdc->cylinders;
-
-	return 0;
-}
-
-/****************************************************************************
- *
- * Module stuff
- *
- ****************************************************************************/
-
-static struct mtd_blktrans_ops ssfdcr_tr = {
-	.name		= "ssfdc",
-	.major		= SSFDCR_MAJOR,
-	.part_bits	= SSFDCR_PARTN_BITS,
-	.blksize	= SECTOR_SIZE,
-	.getgeo		= ssfdcr_getgeo,
-	.readsect	= ssfdcr_readsect,
-	.add_mtd	= ssfdcr_add_mtd,
-	.remove_dev	= ssfdcr_remove_dev,
-	.owner		= THIS_MODULE,
-};
-
-static int __init init_ssfdcr(void)
-{
-	printk(KERN_INFO "SSFDC read-only Flash Translation layer\n");
-
-	return register_mtd_blktrans(&ssfdcr_tr);
-}
-
-static void __exit cleanup_ssfdcr(void)
-{
-	deregister_mtd_blktrans(&ssfdcr_tr);
-}
-
-module_init(init_ssfdcr);
-module_exit(cleanup_ssfdcr);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Claudio Lanconelli <lanconelli.claudio@eptar.com>");
-MODULE_DESCRIPTION("Flash Translation Layer for read-only SSFDC SmartMedia card");