#include "internals.h"
-static int nand_get_device(struct mtd_info *mtd, int new_state);
+static int nand_get_device(struct nand_chip *chip, int new_state);
-static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+static int nand_do_write_oob(struct nand_chip *chip, loff_t to,
struct mtd_oob_ops *ops);
/* Define default oob placement schemes for large and small page devices */
.free = nand_ooblayout_free_lp_hamming,
};
-static int check_offs_len(struct mtd_info *mtd,
- loff_t ofs, uint64_t len)
+static int check_offs_len(struct nand_chip *chip, loff_t ofs, uint64_t len)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
int ret = 0;
/* Start address must align on block boundary */
/**
* nand_release_device - [GENERIC] release chip
- * @mtd: MTD device structure
+ * @chip: NAND chip object
*
* Release chip lock and wake up anyone waiting on the device.
*/
-static void nand_release_device(struct mtd_info *mtd)
+static void nand_release_device(struct nand_chip *chip)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
/* Release the controller and the chip */
spin_lock(&chip->controller->lock);
chip->controller->active = NULL;
if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
ofs += mtd->erasesize - mtd->writesize;
do {
- res = nand_do_write_oob(mtd, ofs, &ops);
+ res = nand_do_write_oob(chip, ofs, &ops);
if (!ret)
ret = res;
/**
* nand_block_markbad_lowlevel - mark a block bad
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @ofs: offset from device start
*
* This function performs the generic NAND bad block marking steps (i.e., bad
* Note that we retain the first error encountered in (2) or (3), finish the
* procedures, and dump the error in the end.
*/
-static int nand_block_markbad_lowlevel(struct mtd_info *mtd, loff_t ofs)
+static int nand_block_markbad_lowlevel(struct nand_chip *chip, loff_t ofs)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
int res, ret = 0;
if (!(chip->bbt_options & NAND_BBT_NO_OOB_BBM)) {
nand_erase_nand(chip, &einfo, 0);
/* Write bad block marker to OOB */
- nand_get_device(mtd, FL_WRITING);
+ nand_get_device(chip, FL_WRITING);
ret = nand_markbad_bbm(chip, ofs);
- nand_release_device(mtd);
+ nand_release_device(chip);
}
/* Mark block bad in BBT */
/**
* nand_check_wp - [GENERIC] check if the chip is write protected
- * @mtd: MTD device structure
+ * @chip: NAND chip object
*
* Check, if the device is write protected. The function expects, that the
* device is already selected.
*/
-static int nand_check_wp(struct mtd_info *mtd)
+static int nand_check_wp(struct nand_chip *chip)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
u8 status;
int ret;
/**
* nand_block_checkbad - [GENERIC] Check if a block is marked bad
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @ofs: offset from device start
* @allowbbt: 1, if its allowed to access the bbt area
*
* Check, if the block is bad. Either by reading the bad block table or
* calling of the scan function.
*/
-static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int allowbbt)
+static int nand_block_checkbad(struct nand_chip *chip, loff_t ofs, int allowbbt)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
-
/* Return info from the table */
if (chip->bbt)
return nand_isbad_bbt(chip, ofs, allowbbt);
/**
* panic_nand_get_device - [GENERIC] Get chip for selected access
* @chip: the nand chip descriptor
- * @mtd: MTD device structure
* @new_state: the state which is requested
*
* Used when in panic, no locks are taken.
*/
-static void panic_nand_get_device(struct nand_chip *chip,
- struct mtd_info *mtd, int new_state)
+static void panic_nand_get_device(struct nand_chip *chip, int new_state)
{
/* Hardware controller shared among independent devices */
chip->controller->active = chip;
/**
* nand_get_device - [GENERIC] Get chip for selected access
- * @mtd: MTD device structure
+ * @chip: NAND chip structure
* @new_state: the state which is requested
*
* Get the device and lock it for exclusive access
*/
static int
-nand_get_device(struct mtd_info *mtd, int new_state)
+nand_get_device(struct nand_chip *chip, int new_state)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
spinlock_t *lock = &chip->controller->lock;
wait_queue_head_t *wq = &chip->controller->wq;
DECLARE_WAITQUEUE(wait, current);
/**
* nand_transfer_oob - [INTERN] Transfer oob to client buffer
- * @mtd: mtd info structure
+ * @chip: NAND chip object
* @oob: oob destination address
* @ops: oob ops structure
* @len: size of oob to transfer
*/
-static uint8_t *nand_transfer_oob(struct mtd_info *mtd, uint8_t *oob,
+static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
struct mtd_oob_ops *ops, size_t len)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
switch (ops->mode) {
/**
* nand_do_read_ops - [INTERN] Read data with ECC
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @from: offset to read from
* @ops: oob ops structure
*
* Internal function. Called with chip held.
*/
-static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+static int nand_do_read_ops(struct nand_chip *chip, loff_t from,
struct mtd_oob_ops *ops)
{
int chipnr, page, realpage, col, bytes, aligned, oob_required;
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
int ret = 0;
uint32_t readlen = ops->len;
uint32_t oobreadlen = ops->ooblen;
int toread = min(oobreadlen, max_oobsize);
if (toread) {
- oob = nand_transfer_oob(mtd,
- oob, ops, toread);
+ oob = nand_transfer_oob(chip, oob, ops,
+ toread);
oobreadlen -= toread;
}
}
/**
* nand_do_read_oob - [INTERN] NAND read out-of-band
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @from: offset to read from
* @ops: oob operations description structure
*
* NAND read out-of-band data from the spare area.
*/
-static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+static int nand_do_read_oob(struct nand_chip *chip, loff_t from,
struct mtd_oob_ops *ops)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
unsigned int max_bitflips = 0;
int page, realpage, chipnr;
- struct nand_chip *chip = mtd_to_nand(mtd);
struct mtd_ecc_stats stats;
int readlen = ops->ooblen;
int len;
break;
len = min(len, readlen);
- buf = nand_transfer_oob(mtd, buf, ops, len);
+ buf = nand_transfer_oob(chip, buf, ops, len);
nand_wait_readrdy(chip);
static int nand_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
+ struct nand_chip *chip = mtd_to_nand(mtd);
int ret;
ops->retlen = 0;
ops->mode != MTD_OPS_RAW)
return -ENOTSUPP;
- nand_get_device(mtd, FL_READING);
+ nand_get_device(chip, FL_READING);
if (!ops->datbuf)
- ret = nand_do_read_oob(mtd, from, ops);
+ ret = nand_do_read_oob(chip, from, ops);
else
- ret = nand_do_read_ops(mtd, from, ops);
+ ret = nand_do_read_ops(chip, from, ops);
- nand_release_device(mtd);
+ nand_release_device(chip);
return ret;
}
/**
* nand_write_page - write one page
- * @mtd: MTD device structure
* @chip: NAND chip descriptor
* @offset: address offset within the page
* @data_len: length of actual data to be written
* @page: page number to write
* @raw: use _raw version of write_page
*/
-static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
- uint32_t offset, int data_len, const uint8_t *buf,
- int oob_required, int page, int raw)
+static int nand_write_page(struct nand_chip *chip, uint32_t offset,
+ int data_len, const uint8_t *buf, int oob_required,
+ int page, int raw)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int status, subpage;
if (!(chip->options & NAND_NO_SUBPAGE_WRITE) &&
/**
* nand_fill_oob - [INTERN] Transfer client buffer to oob
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @oob: oob data buffer
* @len: oob data write length
* @ops: oob ops structure
*/
-static uint8_t *nand_fill_oob(struct mtd_info *mtd, uint8_t *oob, size_t len,
+static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob, size_t len,
struct mtd_oob_ops *ops)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
int ret;
/*
/**
* nand_do_write_ops - [INTERN] NAND write with ECC
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @to: offset to write to
* @ops: oob operations description structure
*
* NAND write with ECC.
*/
-static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+static int nand_do_write_ops(struct nand_chip *chip, loff_t to,
struct mtd_oob_ops *ops)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int chipnr, realpage, page, column;
- struct nand_chip *chip = mtd_to_nand(mtd);
uint32_t writelen = ops->len;
uint32_t oobwritelen = ops->ooblen;
chip->select_chip(chip, chipnr);
/* Check, if it is write protected */
- if (nand_check_wp(mtd)) {
+ if (nand_check_wp(chip)) {
ret = -EIO;
goto err_out;
}
if (unlikely(oob)) {
size_t len = min(oobwritelen, oobmaxlen);
- oob = nand_fill_oob(mtd, oob, len, ops);
+ oob = nand_fill_oob(chip, oob, len, ops);
oobwritelen -= len;
} else {
/* We still need to erase leftover OOB data */
memset(chip->oob_poi, 0xff, mtd->oobsize);
}
- ret = nand_write_page(mtd, chip, column, bytes, wbuf,
+ ret = nand_write_page(chip, column, bytes, wbuf,
oob_required, page,
(ops->mode == MTD_OPS_RAW));
if (ret)
int ret;
/* Grab the device */
- panic_nand_get_device(chip, mtd, FL_WRITING);
+ panic_nand_get_device(chip, FL_WRITING);
chip->select_chip(chip, chipnr);
ops.datbuf = (uint8_t *)buf;
ops.mode = MTD_OPS_PLACE_OOB;
- ret = nand_do_write_ops(mtd, to, &ops);
+ ret = nand_do_write_ops(chip, to, &ops);
*retlen = ops.retlen;
return ret;
/**
* nand_do_write_oob - [MTD Interface] NAND write out-of-band
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @to: offset to write to
* @ops: oob operation description structure
*
* NAND write out-of-band.
*/
-static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+static int nand_do_write_oob(struct nand_chip *chip, loff_t to,
struct mtd_oob_ops *ops)
{
+ struct mtd_info *mtd = nand_to_mtd(chip);
int chipnr, page, status, len;
- struct nand_chip *chip = mtd_to_nand(mtd);
pr_debug("%s: to = 0x%08x, len = %i\n",
__func__, (unsigned int)to, (int)ops->ooblen);
page = (int)(to >> chip->page_shift);
/* Check, if it is write protected */
- if (nand_check_wp(mtd)) {
+ if (nand_check_wp(chip)) {
chip->select_chip(chip, -1);
return -EROFS;
}
if (page == chip->pagebuf)
chip->pagebuf = -1;
- nand_fill_oob(mtd, ops->oobbuf, ops->ooblen, ops);
+ nand_fill_oob(chip, ops->oobbuf, ops->ooblen, ops);
if (ops->mode == MTD_OPS_RAW)
status = chip->ecc.write_oob_raw(chip, page & chip->pagemask);
static int nand_write_oob(struct mtd_info *mtd, loff_t to,
struct mtd_oob_ops *ops)
{
+ struct nand_chip *chip = mtd_to_nand(mtd);
int ret = -ENOTSUPP;
ops->retlen = 0;
- nand_get_device(mtd, FL_WRITING);
+ nand_get_device(chip, FL_WRITING);
switch (ops->mode) {
case MTD_OPS_PLACE_OOB:
}
if (!ops->datbuf)
- ret = nand_do_write_oob(mtd, to, ops);
+ ret = nand_do_write_oob(chip, to, ops);
else
- ret = nand_do_write_ops(mtd, to, ops);
+ ret = nand_do_write_ops(chip, to, ops);
out:
- nand_release_device(mtd);
+ nand_release_device(chip);
return ret;
}
int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
int allowbbt)
{
- struct mtd_info *mtd = nand_to_mtd(chip);
int page, status, pages_per_block, ret, chipnr;
loff_t len;
__func__, (unsigned long long)instr->addr,
(unsigned long long)instr->len);
- if (check_offs_len(mtd, instr->addr, instr->len))
+ if (check_offs_len(chip, instr->addr, instr->len))
return -EINVAL;
/* Grab the lock and see if the device is available */
- nand_get_device(mtd, FL_ERASING);
+ nand_get_device(chip, FL_ERASING);
/* Shift to get first page */
page = (int)(instr->addr >> chip->page_shift);
chip->select_chip(chip, chipnr);
/* Check, if it is write protected */
- if (nand_check_wp(mtd)) {
+ if (nand_check_wp(chip)) {
pr_debug("%s: device is write protected!\n",
__func__);
ret = -EIO;
while (len) {
/* Check if we have a bad block, we do not erase bad blocks! */
- if (nand_block_checkbad(mtd, ((loff_t) page) <<
+ if (nand_block_checkbad(chip, ((loff_t) page) <<
chip->page_shift, allowbbt)) {
pr_warn("%s: attempt to erase a bad block at page 0x%08x\n",
__func__, page);
/* Deselect and wake up anyone waiting on the device */
chip->select_chip(chip, -1);
- nand_release_device(mtd);
+ nand_release_device(chip);
/* Return more or less happy */
return ret;
*/
static void nand_sync(struct mtd_info *mtd)
{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
pr_debug("%s: called\n", __func__);
/* Grab the lock and see if the device is available */
- nand_get_device(mtd, FL_SYNCING);
+ nand_get_device(chip, FL_SYNCING);
/* Release it and go back */
- nand_release_device(mtd);
+ nand_release_device(chip);
}
/**
int ret;
/* Select the NAND device */
- nand_get_device(mtd, FL_READING);
+ nand_get_device(chip, FL_READING);
chip->select_chip(chip, chipnr);
- ret = nand_block_checkbad(mtd, offs, 0);
+ ret = nand_block_checkbad(chip, offs, 0);
chip->select_chip(chip, -1);
- nand_release_device(mtd);
+ nand_release_device(chip);
return ret;
}
return ret;
}
- return nand_block_markbad_lowlevel(mtd, ofs);
+ return nand_block_markbad_lowlevel(mtd_to_nand(mtd), ofs);
}
/**
*/
static int nand_suspend(struct mtd_info *mtd)
{
- return nand_get_device(mtd, FL_PM_SUSPENDED);
+ return nand_get_device(mtd_to_nand(mtd), FL_PM_SUSPENDED);
}
/**
struct nand_chip *chip = mtd_to_nand(mtd);
if (chip->state == FL_PM_SUSPENDED)
- nand_release_device(mtd);
+ nand_release_device(chip);
else
pr_err("%s called for a chip which is not in suspended state\n",
__func__);
*/
static void nand_shutdown(struct mtd_info *mtd)
{
- nand_get_device(mtd, FL_PM_SUSPENDED);
+ nand_get_device(mtd_to_nand(mtd), FL_PM_SUSPENDED);
}
/* Set default functions */
kfree(chip->parameters.onfi);
}
-static int nand_set_ecc_soft_ops(struct mtd_info *mtd)
+static int nand_set_ecc_soft_ops(struct nand_chip *chip)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct nand_ecc_ctrl *ecc = &chip->ecc;
if (WARN_ON(ecc->mode != NAND_ECC_SOFT))
* Requirement (2) ensures we can correct even when all bitflips are clumped
* in the same sector.
*/
-static bool nand_ecc_strength_good(struct mtd_info *mtd)
+static bool nand_ecc_strength_good(struct nand_chip *chip)
{
- struct nand_chip *chip = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(chip);
struct nand_ecc_ctrl *ecc = &chip->ecc;
int corr, ds_corr;
ecc->algo = NAND_ECC_HAMMING;
case NAND_ECC_SOFT:
- ret = nand_set_ecc_soft_ops(mtd);
+ ret = nand_set_ecc_soft_ops(chip);
if (ret) {
ret = -EINVAL;
goto err_nand_manuf_cleanup;
mtd->oobavail = ret;
/* ECC sanity check: warn if it's too weak */
- if (!nand_ecc_strength_good(mtd))
+ if (!nand_ecc_strength_good(chip))
pr_warn("WARNING: %s: the ECC used on your system is too weak compared to the one required by the NAND chip\n",
mtd->name);
#define BBT_ENTRY_MASK 0x03
#define BBT_ENTRY_SHIFT 2
-static int nand_update_bbt(struct mtd_info *mtd, loff_t offs);
+static int nand_update_bbt(struct nand_chip *chip, loff_t offs);
static inline uint8_t bbt_get_entry(struct nand_chip *chip, int block)
{
/**
* read_bbt - [GENERIC] Read the bad block table starting from page
- * @mtd: MTD device structure
+ * @chip: NAND chip object
* @buf: temporary buffer
* @page: the starting page
* @num: the number of bbt descriptors to read
*
* Read the bad block table starting from page.
*/
-static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
- struct nand_bbt_descr *td, int offs)
+static int read_bbt(struct nand_chip *this, uint8_t *buf, int page, int num,
+ struct nand_bbt_descr *td, int offs)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
int res, ret = 0, i, j, act = 0;
- struct nand_chip *this = mtd_to_nand(mtd);
size_t retlen, len, totlen;
loff_t from;
int bits = td->options & NAND_BBT_NRBITS_MSK;
/**
* read_abs_bbt - [GENERIC] Read the bad block table starting at a given page
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @td: descriptor for the bad block table
* @chip: read the table for a specific chip, -1 read all chips; applies only if
* Read the bad block table for all chips starting at a given page. We assume
* that the bbt bits are in consecutive order.
*/
-static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
+static int read_abs_bbt(struct nand_chip *this, uint8_t *buf,
+ struct nand_bbt_descr *td, int chip)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int res = 0, i;
if (td->options & NAND_BBT_PERCHIP) {
int offs = 0;
for (i = 0; i < this->numchips; i++) {
if (chip == -1 || chip == i)
- res = read_bbt(mtd, buf, td->pages[i],
+ res = read_bbt(this, buf, td->pages[i],
this->chipsize >> this->bbt_erase_shift,
td, offs);
if (res)
offs += this->chipsize >> this->bbt_erase_shift;
}
} else {
- res = read_bbt(mtd, buf, td->pages[0],
+ res = read_bbt(this, buf, td->pages[0],
mtd->size >> this->bbt_erase_shift, td, 0);
if (res)
return res;
}
/* BBT marker is in the first page, no OOB */
-static int scan_read_data(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
- struct nand_bbt_descr *td)
+static int scan_read_data(struct nand_chip *this, uint8_t *buf, loff_t offs,
+ struct nand_bbt_descr *td)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
size_t retlen;
size_t len;
/**
* scan_read_oob - [GENERIC] Scan data+OOB region to buffer
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @offs: offset at which to scan
* @len: length of data region to read
* page,OOB,page,OOB,... in buf. Completes transfer and returns the "strongest"
* ECC condition (error or bitflip). May quit on the first (non-ECC) error.
*/
-static int scan_read_oob(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
+static int scan_read_oob(struct nand_chip *this, uint8_t *buf, loff_t offs,
size_t len)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
struct mtd_oob_ops ops;
int res, ret = 0;
return ret;
}
-static int scan_read(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
- size_t len, struct nand_bbt_descr *td)
+static int scan_read(struct nand_chip *this, uint8_t *buf, loff_t offs,
+ size_t len, struct nand_bbt_descr *td)
{
if (td->options & NAND_BBT_NO_OOB)
- return scan_read_data(mtd, buf, offs, td);
+ return scan_read_data(this, buf, offs, td);
else
- return scan_read_oob(mtd, buf, offs, len);
+ return scan_read_oob(this, buf, offs, len);
}
/* Scan write data with oob to flash */
-static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len,
+static int scan_write_bbt(struct nand_chip *this, loff_t offs, size_t len,
uint8_t *buf, uint8_t *oob)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
struct mtd_oob_ops ops;
ops.mode = MTD_OPS_PLACE_OOB;
return mtd_write_oob(mtd, offs, &ops);
}
-static u32 bbt_get_ver_offs(struct mtd_info *mtd, struct nand_bbt_descr *td)
+static u32 bbt_get_ver_offs(struct nand_chip *this, struct nand_bbt_descr *td)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
u32 ver_offs = td->veroffs;
if (!(td->options & NAND_BBT_NO_OOB))
/**
* read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @td: descriptor for the bad block table
* @md: descriptor for the bad block table mirror
* Read the bad block table(s) for all chips starting at a given page. We
* assume that the bbt bits are in consecutive order.
*/
-static void read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
+static void read_abs_bbts(struct nand_chip *this, uint8_t *buf,
struct nand_bbt_descr *td, struct nand_bbt_descr *md)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
/* Read the primary version, if available */
if (td->options & NAND_BBT_VERSION) {
- scan_read(mtd, buf, (loff_t)td->pages[0] << this->page_shift,
- mtd->writesize, td);
- td->version[0] = buf[bbt_get_ver_offs(mtd, td)];
+ scan_read(this, buf, (loff_t)td->pages[0] << this->page_shift,
+ mtd->writesize, td);
+ td->version[0] = buf[bbt_get_ver_offs(this, td)];
pr_info("Bad block table at page %d, version 0x%02X\n",
td->pages[0], td->version[0]);
}
/* Read the mirror version, if available */
if (md && (md->options & NAND_BBT_VERSION)) {
- scan_read(mtd, buf, (loff_t)md->pages[0] << this->page_shift,
- mtd->writesize, md);
- md->version[0] = buf[bbt_get_ver_offs(mtd, md)];
+ scan_read(this, buf, (loff_t)md->pages[0] << this->page_shift,
+ mtd->writesize, md);
+ md->version[0] = buf[bbt_get_ver_offs(this, md)];
pr_info("Bad block table at page %d, version 0x%02X\n",
md->pages[0], md->version[0]);
}
}
/* Scan a given block partially */
-static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
+static int scan_block_fast(struct nand_chip *this, struct nand_bbt_descr *bd,
loff_t offs, uint8_t *buf, int numpages)
{
+ struct mtd_info *mtd = nand_to_mtd(this);
struct mtd_oob_ops ops;
int j, ret;
/**
* create_bbt - [GENERIC] Create a bad block table by scanning the device
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @bd: descriptor for the good/bad block search pattern
* @chip: create the table for a specific chip, -1 read all chips; applies only
* Create a bad block table by scanning the device for the given good/bad block
* identify pattern.
*/
-static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
- struct nand_bbt_descr *bd, int chip)
+static int create_bbt(struct nand_chip *this, uint8_t *buf,
+ struct nand_bbt_descr *bd, int chip)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int i, numblocks, numpages;
int startblock;
loff_t from;
BUG_ON(bd->options & NAND_BBT_NO_OOB);
- ret = scan_block_fast(mtd, bd, from, buf, numpages);
+ ret = scan_block_fast(this, bd, from, buf, numpages);
if (ret < 0)
return ret;
/**
* search_bbt - [GENERIC] scan the device for a specific bad block table
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @td: descriptor for the bad block table
*
*
* The bbt ident pattern resides in the oob area of the first page in a block.
*/
-static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
+static int search_bbt(struct nand_chip *this, uint8_t *buf,
+ struct nand_bbt_descr *td)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int i, chips;
int startblock, block, dir;
int scanlen = mtd->writesize + mtd->oobsize;
loff_t offs = (loff_t)actblock << this->bbt_erase_shift;
/* Read first page */
- scan_read(mtd, buf, offs, mtd->writesize, td);
+ scan_read(this, buf, offs, mtd->writesize, td);
if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
td->pages[i] = actblock << blocktopage;
if (td->options & NAND_BBT_VERSION) {
- offs = bbt_get_ver_offs(mtd, td);
+ offs = bbt_get_ver_offs(this, td);
td->version[i] = buf[offs];
}
break;
/**
* search_read_bbts - [GENERIC] scan the device for bad block table(s)
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @td: descriptor for the bad block table
* @md: descriptor for the bad block table mirror
*
* Search and read the bad block table(s).
*/
-static void search_read_bbts(struct mtd_info *mtd, uint8_t *buf,
+static void search_read_bbts(struct nand_chip *this, uint8_t *buf,
struct nand_bbt_descr *td,
struct nand_bbt_descr *md)
{
/* Search the primary table */
- search_bbt(mtd, buf, td);
+ search_bbt(this, buf, td);
/* Search the mirror table */
if (md)
- search_bbt(mtd, buf, md);
+ search_bbt(this, buf, md);
}
/**
/**
* write_bbt - [GENERIC] (Re)write the bad block table
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @buf: temporary buffer
* @td: descriptor for the bad block table
* @md: descriptor for the bad block table mirror
*
* (Re)write the bad block table.
*/
-static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
+static int write_bbt(struct nand_chip *this, uint8_t *buf,
struct nand_bbt_descr *td, struct nand_bbt_descr *md,
int chipsel)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
struct erase_info einfo;
int i, res, chip = 0;
int bits, page, offs, numblocks, sft, sftmsk;
continue;
}
- res = scan_write_bbt(mtd, to, len, buf,
- td->options & NAND_BBT_NO_OOB ? NULL :
- &buf[len]);
+ res = scan_write_bbt(this, to, len, buf,
+ td->options & NAND_BBT_NO_OOB ?
+ NULL : &buf[len]);
if (res < 0) {
pr_warn("nand_bbt: error while writing BBT block %d\n",
res);
/**
* nand_memory_bbt - [GENERIC] create a memory based bad block table
- * @mtd: MTD device structure
+ * @this: NAND chip object
* @bd: descriptor for the good/bad block search pattern
*
* The function creates a memory based bbt by scanning the device for
* manufacturer / software marked good / bad blocks.
*/
-static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
+static inline int nand_memory_bbt(struct nand_chip *this,
+ struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd_to_nand(mtd);
-
- return create_bbt(mtd, this->data_buf, bd, -1);
+ return create_bbt(this, this->data_buf, bd, -1);
}
/**
* check_create - [GENERIC] create and write bbt(s) if necessary
- * @mtd: MTD device structure
+ * @this: the NAND device
* @buf: temporary buffer
* @bd: descriptor for the good/bad block search pattern
*
* for the chip/device. Update is necessary if one of the tables is missing or
* the version nr. of one table is less than the other.
*/
-static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
+static int check_create(struct nand_chip *this, uint8_t *buf,
+ struct nand_bbt_descr *bd)
{
int i, chips, writeops, create, chipsel, res, res2;
- struct nand_chip *this = mtd_to_nand(mtd);
struct nand_bbt_descr *td = this->bbt_td;
struct nand_bbt_descr *md = this->bbt_md;
struct nand_bbt_descr *rd, *rd2;
/* Create the table in memory by scanning the chip(s) */
if (!(this->bbt_options & NAND_BBT_CREATE_EMPTY))
- create_bbt(mtd, buf, bd, chipsel);
+ create_bbt(this, buf, bd, chipsel);
td->version[i] = 1;
if (md)
/* Read back first? */
if (rd) {
- res = read_abs_bbt(mtd, buf, rd, chipsel);
+ res = read_abs_bbt(this, buf, rd, chipsel);
if (mtd_is_eccerr(res)) {
/* Mark table as invalid */
rd->pages[i] = -1;
}
/* If they weren't versioned, read both */
if (rd2) {
- res2 = read_abs_bbt(mtd, buf, rd2, chipsel);
+ res2 = read_abs_bbt(this, buf, rd2, chipsel);
if (mtd_is_eccerr(res2)) {
/* Mark table as invalid */
rd2->pages[i] = -1;
/* Write the bad block table to the device? */
if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) {
- res = write_bbt(mtd, buf, td, md, chipsel);
+ res = write_bbt(this, buf, td, md, chipsel);
if (res < 0)
return res;
}
/* Write the mirror bad block table to the device? */
if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) {
- res = write_bbt(mtd, buf, md, td, chipsel);
+ res = write_bbt(this, buf, md, td, chipsel);
if (res < 0)
return res;
}
/**
* mark_bbt_regions - [GENERIC] mark the bad block table regions
- * @mtd: MTD device structure
+ * @this: the NAND device
* @td: bad block table descriptor
*
* The bad block table regions are marked as "bad" to prevent accidental
* erasures / writes. The regions are identified by the mark 0x02.
*/
-static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
+static void mark_bbt_region(struct nand_chip *this, struct nand_bbt_descr *td)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int i, j, chips, block, nrblocks, update;
uint8_t oldval;
bbt_mark_entry(this, block, BBT_BLOCK_RESERVED);
if ((oldval != BBT_BLOCK_RESERVED) &&
td->reserved_block_code)
- nand_update_bbt(mtd, (loff_t)block <<
+ nand_update_bbt(this, (loff_t)block <<
this->bbt_erase_shift);
continue;
}
* bbts. This should only happen once.
*/
if (update && td->reserved_block_code)
- nand_update_bbt(mtd, (loff_t)(block - 1) <<
+ nand_update_bbt(this, (loff_t)(block - 1) <<
this->bbt_erase_shift);
}
}
/**
* verify_bbt_descr - verify the bad block description
- * @mtd: MTD device structure
+ * @this: the NAND device
* @bd: the table to verify
*
* This functions performs a few sanity checks on the bad block description
* table.
*/
-static void verify_bbt_descr(struct mtd_info *mtd, struct nand_bbt_descr *bd)
+static void verify_bbt_descr(struct nand_chip *this, struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
u32 pattern_len;
u32 bits;
u32 table_size;
/**
* nand_scan_bbt - [NAND Interface] scan, find, read and maybe create bad block table(s)
- * @mtd: MTD device structure
+ * @this: the NAND device
* @bd: descriptor for the good/bad block search pattern
*
* The function checks, if a bad block table(s) is/are already available. If
* The bad block table memory is allocated here. It must be freed by calling
* the nand_free_bbt function.
*/
-static int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
+static int nand_scan_bbt(struct nand_chip *this, struct nand_bbt_descr *bd)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int len, res;
uint8_t *buf;
struct nand_bbt_descr *td = this->bbt_td;
* memory based bad block table.
*/
if (!td) {
- if ((res = nand_memory_bbt(mtd, bd))) {
+ if ((res = nand_memory_bbt(this, bd))) {
pr_err("nand_bbt: can't scan flash and build the RAM-based BBT\n");
goto err;
}
return 0;
}
- verify_bbt_descr(mtd, td);
- verify_bbt_descr(mtd, md);
+ verify_bbt_descr(this, td);
+ verify_bbt_descr(this, md);
/* Allocate a temporary buffer for one eraseblock incl. oob */
len = (1 << this->bbt_erase_shift);
/* Is the bbt at a given page? */
if (td->options & NAND_BBT_ABSPAGE) {
- read_abs_bbts(mtd, buf, td, md);
+ read_abs_bbts(this, buf, td, md);
} else {
/* Search the bad block table using a pattern in oob */
- search_read_bbts(mtd, buf, td, md);
+ search_read_bbts(this, buf, td, md);
}
- res = check_create(mtd, buf, bd);
+ res = check_create(this, buf, bd);
if (res)
goto err;
/* Prevent the bbt regions from erasing / writing */
- mark_bbt_region(mtd, td);
+ mark_bbt_region(this, td);
if (md)
- mark_bbt_region(mtd, md);
+ mark_bbt_region(this, md);
vfree(buf);
return 0;
/**
* nand_update_bbt - update bad block table(s)
- * @mtd: MTD device structure
+ * @this: the NAND device
* @offs: the offset of the newly marked block
*
* The function updates the bad block table(s).
*/
-static int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
+static int nand_update_bbt(struct nand_chip *this, loff_t offs)
{
- struct nand_chip *this = mtd_to_nand(mtd);
+ struct mtd_info *mtd = nand_to_mtd(this);
int len, res = 0;
int chip, chipsel;
uint8_t *buf;
/* Write the bad block table to the device? */
if (td->options & NAND_BBT_WRITE) {
- res = write_bbt(mtd, buf, td, md, chipsel);
+ res = write_bbt(this, buf, td, md, chipsel);
if (res < 0)
goto out;
}
/* Write the mirror bad block table to the device? */
if (md && (md->options & NAND_BBT_WRITE)) {
- res = write_bbt(mtd, buf, md, td, chipsel);
+ res = write_bbt(this, buf, md, td, chipsel);
}
out:
return ret;
}
- return nand_scan_bbt(nand_to_mtd(this), this->badblock_pattern);
+ return nand_scan_bbt(this, this->badblock_pattern);
}
EXPORT_SYMBOL(nand_create_bbt);
*/
int nand_markbad_bbt(struct nand_chip *this, loff_t offs)
{
- struct mtd_info *mtd = nand_to_mtd(this);
int block, ret = 0;
block = (int)(offs >> this->bbt_erase_shift);
/* Update flash-based bad block table */
if (this->bbt_options & NAND_BBT_USE_FLASH)
- ret = nand_update_bbt(mtd, offs);
+ ret = nand_update_bbt(this, offs);
return ret;
}
projects / openwrt / staging / blogic.git / commitdiff