aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/devices/doc2000.c179
-rw-r--r--drivers/mtd/devices/doc2001.c179
-rw-r--r--drivers/mtd/devices/doc2001plus.c164
-rw-r--r--drivers/mtd/nand/nand_base.c16
-rw-r--r--drivers/mtd/nand/nand_ecc.c3
-rw-r--r--drivers/mtd/nand/sharpsl.c7
6 files changed, 216 insertions, 332 deletions
diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index c54e40464d8..603a7951ac9 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -55,10 +55,6 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf);
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
-static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
-static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
struct mtd_oob_ops *ops);
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
@@ -615,17 +611,10 @@ EXPORT_SYMBOL_GPL(DoC2k_init);
static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t * retlen, u_char * buf)
{
- /* Just a special case of doc_read_ecc */
- return doc_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
-}
-
-static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel)
-{
struct DiskOnChip *this = mtd->priv;
void __iomem *docptr = this->virtadr;
struct Nand *mychip;
- unsigned char syndrome[6];
+ unsigned char syndrome[6], eccbuf[6];
volatile char dummy;
int i, len256 = 0, ret=0;
size_t left = len;
@@ -673,15 +662,9 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
DoC_Address(this, ADDR_COLUMN_PAGE, from, CDSN_CTRL_WP,
CDSN_CTRL_ECC_IO);
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
+ /* Prime the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_EN, docptr, ECCConf);
/* treat crossing 256-byte sector for 2M x 8bits devices */
if (this->page256 && from + len > (from | 0xff) + 1) {
@@ -698,58 +681,59 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
/* Let the caller know we completed it */
*retlen += len;
- if (eccbuf) {
- /* Read the ECC data through the DiskOnChip ECC logic */
- /* Note: this will work even with 2M x 8bit devices as */
- /* they have 8 bytes of OOB per 256 page. mf. */
- DoC_ReadBuf(this, eccbuf, 6);
-
- /* Flush the pipeline */
- if (DoC_is_Millennium(this)) {
- dummy = ReadDOC(docptr, ECCConf);
- dummy = ReadDOC(docptr, ECCConf);
- i = ReadDOC(docptr, ECCConf);
- } else {
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- i = ReadDOC(docptr, 2k_ECCStatus);
- }
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ /* Note: this will work even with 2M x 8bit devices as */
+ /* they have 8 bytes of OOB per 256 page. mf. */
+ DoC_ReadBuf(this, eccbuf, 6);
- /* Check the ECC Status */
- if (i & 0x80) {
- int nb_errors;
- /* There was an ECC error */
+ /* Flush the pipeline */
+ if (DoC_is_Millennium(this)) {
+ dummy = ReadDOC(docptr, ECCConf);
+ dummy = ReadDOC(docptr, ECCConf);
+ i = ReadDOC(docptr, ECCConf);
+ } else {
+ dummy = ReadDOC(docptr, 2k_ECCStatus);
+ dummy = ReadDOC(docptr, 2k_ECCStatus);
+ i = ReadDOC(docptr, 2k_ECCStatus);
+ }
+
+ /* Check the ECC Status */
+ if (i & 0x80) {
+ int nb_errors;
+ /* There was an ECC error */
#ifdef ECC_DEBUG
- printk(KERN_ERR "DiskOnChip ECC Error: Read at %lx\n", (long)from);
+ printk(KERN_ERR "DiskOnChip ECC Error: Read at %lx\n", (long)from);
#endif
- /* Read the ECC syndrom through the DiskOnChip ECC logic.
- These syndrome will be all ZERO when there is no error */
- for (i = 0; i < 6; i++) {
- syndrome[i] =
- ReadDOC(docptr, ECCSyndrome0 + i);
- }
- nb_errors = doc_decode_ecc(buf, syndrome);
+ /* Read the ECC syndrom through the DiskOnChip ECC
+ logic. These syndrome will be all ZERO when there
+ is no error */
+ for (i = 0; i < 6; i++) {
+ syndrome[i] =
+ ReadDOC(docptr, ECCSyndrome0 + i);
+ }
+ nb_errors = doc_decode_ecc(buf, syndrome);
#ifdef ECC_DEBUG
- printk(KERN_ERR "Errors corrected: %x\n", nb_errors);
+ printk(KERN_ERR "Errors corrected: %x\n", nb_errors);
#endif
- if (nb_errors < 0) {
- /* We return error, but have actually done the read. Not that
- this can be told to user-space, via sys_read(), but at least
- MTD-aware stuff can know about it by checking *retlen */
- ret = -EIO;
- }
+ if (nb_errors < 0) {
+ /* We return error, but have actually done the
+ read. Not that this can be told to
+ user-space, via sys_read(), but at least
+ MTD-aware stuff can know about it by
+ checking *retlen */
+ ret = -EIO;
}
+ }
#ifdef PSYCHO_DEBUG
- printk(KERN_DEBUG "ECC DATA at %lxB: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long)from, eccbuf[0], eccbuf[1], eccbuf[2],
- eccbuf[3], eccbuf[4], eccbuf[5]);
+ printk(KERN_DEBUG "ECC DATA at %lxB: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long)from, eccbuf[0], eccbuf[1], eccbuf[2],
+ eccbuf[3], eccbuf[4], eccbuf[5]);
#endif
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
- }
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
/* according to 11.4.1, we need to wait for the busy line
* drop if we read to the end of the page. */
@@ -771,17 +755,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t * retlen, const u_char * buf)
{
- char eccbuf[6];
- return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, NULL);
-}
-
-static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf,
- u_char * eccbuf, struct nand_oobinfo *oobsel)
-{
struct DiskOnChip *this = mtd->priv;
int di; /* Yes, DI is a hangover from when I was disassembling the binary driver */
void __iomem *docptr = this->virtadr;
+ unsigned char eccbuf[6];
volatile char dummy;
int len256 = 0;
struct Nand *mychip;
@@ -835,15 +812,9 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
DoC_Command(this, NAND_CMD_SEQIN, 0);
DoC_Address(this, ADDR_COLUMN_PAGE, to, 0, CDSN_CTRL_ECC_IO);
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
+ /* Prime the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
/* treat crossing 256-byte sector for 2M x 8bits devices */
if (this->page256 && to + len > (to | 0xff) + 1) {
@@ -873,39 +844,35 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
DoC_WriteBuf(this, &buf[len256], len - len256);
- if (eccbuf) {
- WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr,
- CDSNControl);
-
- if (DoC_is_Millennium(this)) {
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- } else {
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- }
+ WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr, CDSNControl);
- WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_FLASH_IO | CDSN_CTRL_CE, docptr,
- CDSNControl);
+ if (DoC_is_Millennium(this)) {
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
+ } else {
+ WriteDOC_(0, docptr, this->ioreg);
+ WriteDOC_(0, docptr, this->ioreg);
+ WriteDOC_(0, docptr, this->ioreg);
+ }
- /* Read the ECC data through the DiskOnChip ECC logic */
- for (di = 0; di < 6; di++) {
- eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di);
- }
+ WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_FLASH_IO | CDSN_CTRL_CE, docptr,
+ CDSNControl);
- /* Reset the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ for (di = 0; di < 6; di++) {
+ eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di);
+ }
+
+ /* Reset the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
#ifdef PSYCHO_DEBUG
- printk
- ("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
+ printk
+ ("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
#endif
- }
-
DoC_Command(this, NAND_CMD_PAGEPROG, 0);
DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
diff --git a/drivers/mtd/devices/doc2001.c b/drivers/mtd/devices/doc2001.c
index 0cf022a69e6..0e2a9326f71 100644
--- a/drivers/mtd/devices/doc2001.c
+++ b/drivers/mtd/devices/doc2001.c
@@ -37,12 +37,6 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf);
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
-static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel);
-static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel);
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
struct mtd_oob_ops *ops);
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
@@ -397,17 +391,9 @@ EXPORT_SYMBOL_GPL(DoCMil_init);
static int doc_read (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
- /* Just a special case of doc_read_ecc */
- return doc_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
-}
-
-static int doc_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel)
-{
int i, ret;
volatile char dummy;
- unsigned char syndrome[6];
+ unsigned char syndrome[6], eccbuf[6];
struct DiskOnChip *this = mtd->priv;
void __iomem *docptr = this->virtadr;
struct Nand *mychip = &this->chips[from >> (this->chipshift)];
@@ -437,15 +423,9 @@ static int doc_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
DoC_Address(docptr, 3, from, CDSN_CTRL_WP, 0x00);
DoC_WaitReady(docptr);
- if (eccbuf) {
- /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
- WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC (DOC_ECC_EN, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC (DOC_ECC_DIS, docptr, ECCConf);
- }
+ /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
+ WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC (DOC_ECC_EN, docptr, ECCConf);
/* Read the data via the internal pipeline through CDSN IO register,
see Pipelined Read Operations 11.3 */
@@ -465,58 +445,56 @@ static int doc_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
*retlen = len;
ret = 0;
- if (eccbuf) {
- /* Read the ECC data from Spare Data Area,
- see Reed-Solomon EDC/ECC 11.1 */
- dummy = ReadDOC(docptr, ReadPipeInit);
+ /* Read the ECC data from Spare Data Area,
+ see Reed-Solomon EDC/ECC 11.1 */
+ dummy = ReadDOC(docptr, ReadPipeInit);
#ifndef USE_MEMCPY
- for (i = 0; i < 5; i++) {
- /* N.B. you have to increase the source address in this way or the
- ECC logic will not work properly */
- eccbuf[i] = ReadDOC(docptr, Mil_CDSN_IO + i);
- }
+ for (i = 0; i < 5; i++) {
+ /* N.B. you have to increase the source address in this way or the
+ ECC logic will not work properly */
+ eccbuf[i] = ReadDOC(docptr, Mil_CDSN_IO + i);
+ }
#else
- memcpy_fromio(eccbuf, docptr + DoC_Mil_CDSN_IO, 5);
+ memcpy_fromio(eccbuf, docptr + DoC_Mil_CDSN_IO, 5);
#endif
- eccbuf[5] = ReadDOC(docptr, LastDataRead);
+ eccbuf[5] = ReadDOC(docptr, LastDataRead);
- /* Flush the pipeline */
- dummy = ReadDOC(docptr, ECCConf);
- dummy = ReadDOC(docptr, ECCConf);
+ /* Flush the pipeline */
+ dummy = ReadDOC(docptr, ECCConf);
+ dummy = ReadDOC(docptr, ECCConf);
- /* Check the ECC Status */
- if (ReadDOC(docptr, ECCConf) & 0x80) {
- int nb_errors;
- /* There was an ECC error */
+ /* Check the ECC Status */
+ if (ReadDOC(docptr, ECCConf) & 0x80) {
+ int nb_errors;
+ /* There was an ECC error */
#ifdef ECC_DEBUG
- printk("DiskOnChip ECC Error: Read at %lx\n", (long)from);
+ printk("DiskOnChip ECC Error: Read at %lx\n", (long)from);
#endif
- /* Read the ECC syndrom through the DiskOnChip ECC logic.
- These syndrome will be all ZERO when there is no error */
- for (i = 0; i < 6; i++) {
- syndrome[i] = ReadDOC(docptr, ECCSyndrome0 + i);
- }
- nb_errors = doc_decode_ecc(buf, syndrome);
+ /* Read the ECC syndrom through the DiskOnChip ECC logic.
+ These syndrome will be all ZERO when there is no error */
+ for (i = 0; i < 6; i++) {
+ syndrome[i] = ReadDOC(docptr, ECCSyndrome0 + i);
+ }
+ nb_errors = doc_decode_ecc(buf, syndrome);
#ifdef ECC_DEBUG
- printk("ECC Errors corrected: %x\n", nb_errors);
+ printk("ECC Errors corrected: %x\n", nb_errors);
#endif
- if (nb_errors < 0) {
- /* We return error, but have actually done the read. Not that
- this can be told to user-space, via sys_read(), but at least
- MTD-aware stuff can know about it by checking *retlen */
- ret = -EIO;
- }
+ if (nb_errors < 0) {
+ /* We return error, but have actually done the read. Not that
+ this can be told to user-space, via sys_read(), but at least
+ MTD-aware stuff can know about it by checking *retlen */
+ ret = -EIO;
}
+ }
#ifdef PSYCHO_DEBUG
- printk("ECC DATA at %lx: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long)from, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
+ printk("ECC DATA at %lx: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long)from, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
#endif
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
- }
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
return ret;
}
@@ -524,15 +502,8 @@ static int doc_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
static int doc_write (struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
- char eccbuf[6];
- return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, NULL);
-}
-
-static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel)
-{
int i,ret = 0;
+ char eccbuf[6];
volatile char dummy;
struct DiskOnChip *this = mtd->priv;
void __iomem *docptr = this->virtadr;
@@ -573,15 +544,9 @@ static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
DoC_Address(docptr, 3, to, 0x00, 0x00);
DoC_WaitReady(docptr);
- if (eccbuf) {
- /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
- WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC (DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC (DOC_ECC_DIS, docptr, ECCConf);
- }
+ /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
+ WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC (DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
/* Write the data via the internal pipeline through CDSN IO register,
see Pipelined Write Operations 11.2 */
@@ -596,46 +561,44 @@ static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
#endif
WriteDOC(0x00, docptr, WritePipeTerm);
- if (eccbuf) {
- /* Write ECC data to flash, the ECC info is generated by the DiskOnChip ECC logic
- see Reed-Solomon EDC/ECC 11.1 */
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
+ /* Write ECC data to flash, the ECC info is generated by the DiskOnChip ECC logic
+ see Reed-Solomon EDC/ECC 11.1 */
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
- /* Read the ECC data through the DiskOnChip ECC logic */
- for (i = 0; i < 6; i++) {
- eccbuf[i] = ReadDOC(docptr, ECCSyndrome0 + i);
- }
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ for (i = 0; i < 6; i++) {
+ eccbuf[i] = ReadDOC(docptr, ECCSyndrome0 + i);
+ }
- /* ignore the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
+ /* ignore the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
#ifndef USE_MEMCPY
- /* Write the ECC data to flash */
- for (i = 0; i < 6; i++) {
- /* N.B. you have to increase the source address in this way or the
- ECC logic will not work properly */
- WriteDOC(eccbuf[i], docptr, Mil_CDSN_IO + i);
- }
+ /* Write the ECC data to flash */
+ for (i = 0; i < 6; i++) {
+ /* N.B. you have to increase the source address in this way or the
+ ECC logic will not work properly */
+ WriteDOC(eccbuf[i], docptr, Mil_CDSN_IO + i);
+ }
#else
- memcpy_toio(docptr + DoC_Mil_CDSN_IO, eccbuf, 6);
+ memcpy_toio(docptr + DoC_Mil_CDSN_IO, eccbuf, 6);
#endif
- /* write the block status BLOCK_USED (0x5555) at the end of ECC data
- FIXME: this is only a hack for programming the IPL area for LinuxBIOS
- and should be replace with proper codes in user space utilities */
- WriteDOC(0x55, docptr, Mil_CDSN_IO);
- WriteDOC(0x55, docptr, Mil_CDSN_IO + 1);
+ /* write the block status BLOCK_USED (0x5555) at the end of ECC data
+ FIXME: this is only a hack for programming the IPL area for LinuxBIOS
+ and should be replace with proper codes in user space utilities */
+ WriteDOC(0x55, docptr, Mil_CDSN_IO);
+ WriteDOC(0x55, docptr, Mil_CDSN_IO + 1);
- WriteDOC(0x00, docptr, WritePipeTerm);
+ WriteDOC(0x00, docptr, WritePipeTerm);
#ifdef PSYCHO_DEBUG
- printk("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
+ printk("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
#endif
- }
/* Commit the Page Program command and wait for ready
see Software Requirement 11.4 item 1.*/
diff --git a/drivers/mtd/devices/doc2001plus.c b/drivers/mtd/devices/doc2001plus.c
index 66cb1e50469..92dbb47f2ac 100644
--- a/drivers/mtd/devices/doc2001plus.c
+++ b/drivers/mtd/devices/doc2001plus.c
@@ -41,12 +41,6 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf);
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
-static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel);
-static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel);
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs,
struct mtd_oob_ops *ops);
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
@@ -595,18 +589,10 @@ static int doc_dumpblk(struct mtd_info *mtd, loff_t from)
static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
- /* Just a special case of doc_read_ecc */
- return doc_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
-}
-
-static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel)
-{
int ret, i;
volatile char dummy;
loff_t fofs;
- unsigned char syndrome[6];
+ unsigned char syndrome[6], eccbuf[6];
struct DiskOnChip *this = mtd->priv;
void __iomem * docptr = this->virtadr;
struct Nand *mychip = &this->chips[from >> (this->chipshift)];
@@ -644,56 +630,51 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
WriteDOC(0, docptr, Mplus_FlashControl);
DoC_WaitReady(docptr);
- if (eccbuf) {
- /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
- WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
- WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
- }
+ /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
+ WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
+ WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
/* Let the caller know we completed it */
*retlen = len;
- ret = 0;
+ ret = 0;
ReadDOC(docptr, Mplus_ReadPipeInit);
ReadDOC(docptr, Mplus_ReadPipeInit);
- if (eccbuf) {
- /* Read the data via the internal pipeline through CDSN IO
- register, see Pipelined Read Operations 11.3 */
- MemReadDOC(docptr, buf, len);
+ /* Read the data via the internal pipeline through CDSN IO
+ register, see Pipelined Read Operations 11.3 */
+ MemReadDOC(docptr, buf, len);
- /* Read the ECC data following raw data */
- MemReadDOC(docptr, eccbuf, 4);
- eccbuf[4] = ReadDOC(docptr, Mplus_LastDataRead);
- eccbuf[5] = ReadDOC(docptr, Mplus_LastDataRead);
+ /* Read the ECC data following raw data */
+ MemReadDOC(docptr, eccbuf, 4);
+ eccbuf[4] = ReadDOC(docptr, Mplus_LastDataRead);
+ eccbuf[5] = ReadDOC(docptr, Mplus_LastDataRead);
- /* Flush the pipeline */
- dummy = ReadDOC(docptr, Mplus_ECCConf);
- dummy = ReadDOC(docptr, Mplus_ECCConf);
+ /* Flush the pipeline */
+ dummy = ReadDOC(docptr, Mplus_ECCConf);
+ dummy = ReadDOC(docptr, Mplus_ECCConf);
- /* Check the ECC Status */
- if (ReadDOC(docptr, Mplus_ECCConf) & 0x80) {
- int nb_errors;
- /* There was an ECC error */
+ /* Check the ECC Status */
+ if (ReadDOC(docptr, Mplus_ECCConf) & 0x80) {
+ int nb_errors;
+ /* There was an ECC error */
#ifdef ECC_DEBUG
- printk("DiskOnChip ECC Error: Read at %lx\n", (long)from);
+ printk("DiskOnChip ECC Error: Read at %lx\n", (long)from);
#endif
- /* Read the ECC syndrom through the DiskOnChip ECC logic.
- These syndrome will be all ZERO when there is no error */
- for (i = 0; i < 6; i++)
- syndrome[i] = ReadDOC(docptr, Mplus_ECCSyndrome0 + i);
+ /* Read the ECC syndrom through the DiskOnChip ECC logic.
+ These syndrome will be all ZERO when there is no error */
+ for (i = 0; i < 6; i++)
+ syndrome[i] = ReadDOC(docptr, Mplus_ECCSyndrome0 + i);
- nb_errors = doc_decode_ecc(buf, syndrome);
+ nb_errors = doc_decode_ecc(buf, syndrome);
#ifdef ECC_DEBUG
- printk("ECC Errors corrected: %x\n", nb_errors);
+ printk("ECC Errors corrected: %x\n", nb_errors);
#endif
- if (nb_errors < 0) {
- /* We return error, but have actually done the read. Not that
- this can be told to user-space, via sys_read(), but at least
- MTD-aware stuff can know about it by checking *retlen */
+ if (nb_errors < 0) {
+ /* We return error, but have actually done the
+ read. Not that this can be told to user-space, via
+ sys_read(), but at least MTD-aware stuff can know
+ about it by checking *retlen */
#ifdef ECC_DEBUG
printk("%s(%d): Millennium Plus ECC error (from=0x%x:\n",
__FILE__, __LINE__, (int)from);
@@ -707,24 +688,16 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
eccbuf[3], eccbuf[4], eccbuf[5]);
#endif
ret = -EIO;
- }
}
+ }
#ifdef PSYCHO_DEBUG
- printk("ECC DATA at %lx: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long)from, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
+ printk("ECC DATA at %lx: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long)from, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
#endif
-
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , Mplus_ECCConf);
- } else {
- /* Read the data via the internal pipeline through CDSN IO
- register, see Pipelined Read Operations 11.3 */
- MemReadDOC(docptr, buf, len-2);
- buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead);
- buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead);
- }
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr , Mplus_ECCConf);
/* Disable flash internally */
WriteDOC(0, docptr, Mplus_FlashSelect);
@@ -735,17 +708,10 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
- char eccbuf[6];
- return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, NULL);
-}
-
-static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *oobsel)
-{
int i, before, ret = 0;
loff_t fto;
volatile char dummy;
+ char eccbuf[6];
struct DiskOnChip *this = mtd->priv;
void __iomem * docptr = this->virtadr;
struct Nand *mychip = &this->chips[to >> (this->chipshift)];
@@ -795,46 +761,42 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
/* Disable the ECC engine */
WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
- if (eccbuf) {
- if (before) {
- /* Write the block status BLOCK_USED (0x5555) */
- WriteDOC(0x55, docptr, Mil_CDSN_IO);
- WriteDOC(0x55, docptr, Mil_CDSN_IO);
- }
-
- /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
- WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, Mplus_ECCConf);
+ if (before) {
+ /* Write the block status BLOCK_USED (0x5555) */
+ WriteDOC(0x55, docptr, Mil_CDSN_IO);
+ WriteDOC(0x55, docptr, Mil_CDSN_IO);
}
+ /* init the ECC engine, see Reed-Solomon EDC/ECC 11.1 .*/
+ WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, Mplus_ECCConf);
+
MemWriteDOC(docptr, (unsigned char *) buf, len);
- if (eccbuf) {
- /* Write ECC data to flash, the ECC info is generated by
- the DiskOnChip ECC logic see Reed-Solomon EDC/ECC 11.1 */
- DoC_Delay(docptr, 3);
+ /* Write ECC data to flash, the ECC info is generated by
+ the DiskOnChip ECC logic see Reed-Solomon EDC/ECC 11.1 */
+ DoC_Delay(docptr, 3);
- /* Read the ECC data through the DiskOnChip ECC logic */
- for (i = 0; i < 6; i++)
- eccbuf[i] = ReadDOC(docptr, Mplus_ECCSyndrome0 + i);
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ for (i = 0; i < 6; i++)
+ eccbuf[i] = ReadDOC(docptr, Mplus_ECCSyndrome0 + i);
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
- /* Write the ECC data to flash */
- MemWriteDOC(docptr, eccbuf, 6);
+ /* Write the ECC data to flash */
+ MemWriteDOC(docptr, eccbuf, 6);
- if (!before) {
- /* Write the block status BLOCK_USED (0x5555) */
- WriteDOC(0x55, docptr, Mil_CDSN_IO+6);
- WriteDOC(0x55, docptr, Mil_CDSN_IO+7);
- }
+ if (!before) {
+ /* Write the block status BLOCK_USED (0x5555) */
+ WriteDOC(0x55, docptr, Mil_CDSN_IO+6);
+ WriteDOC(0x55, docptr, Mil_CDSN_IO+7);
+ }
#ifdef PSYCHO_DEBUG
- printk("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
+ printk("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
#endif
- }
WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 80a76654d96..62b861304e0 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -155,7 +155,7 @@ static u16 nand_read_word(struct mtd_info *mtd)
/**
* nand_select_chip - [DEFAULT] control CE line
* @mtd: MTD device structure
- * @chip: chipnumber to select, -1 for deselect
+ * @chipnr: chipnumber to select, -1 for deselect
*
* Default select function for 1 chip devices.
*/
@@ -542,7 +542,6 @@ static void nand_command(struct mtd_info *mtd, unsigned int command,
* Send command to NAND device. This is the version for the new large page
* devices We dont have the separate regions as we have in the small page
* devices. We must emulate NAND_CMD_READOOB to keep the code compatible.
- *
*/
static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
int column, int page_addr)
@@ -656,7 +655,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
/**
* nand_get_device - [GENERIC] Get chip for selected access
- * @this: the nand chip descriptor
+ * @chip: the nand chip descriptor
* @mtd: MTD device structure
* @new_state: the state which is requested
*
@@ -696,13 +695,12 @@ nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
/**
* nand_wait - [DEFAULT] wait until the command is done
* @mtd: MTD device structure
- * @this: NAND chip structure
+ * @chip: NAND chip structure
*
* Wait for command done. This applies to erase and program only
* Erase can take up to 400ms and program up to 20ms according to
* general NAND and SmartMedia specs
- *
-*/
+ */
static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
{
@@ -896,6 +894,7 @@ static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
/**
* nand_transfer_oob - [Internal] Transfer oob to client buffer
* @chip: nand chip structure
+ * @oob: oob destination address
* @ops: oob ops structure
*/
static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
@@ -946,6 +945,7 @@ static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
*
* @mtd: MTD device structure
* @from: offset to read from
+ * @ops: oob ops structure
*
* Internal function. Called with chip held.
*/
@@ -1760,7 +1760,7 @@ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
/**
* nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
* @mtd: MTD device structure
- * @from: offset to read from
+ * @to: offset to write to
* @ops: oob operation description structure
*/
static int nand_write_oob(struct mtd_info *mtd, loff_t to,
@@ -2055,7 +2055,7 @@ static void nand_sync(struct mtd_info *mtd)
/**
* nand_block_isbad - [MTD Interface] Check if block at offset is bad
* @mtd: MTD device structure
- * @ofs: offset relative to mtd start
+ * @offs: offset relative to mtd start
*/
static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
{
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index 2a163e4084d..dd438ca47d9 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -65,8 +65,7 @@ static const u_char nand_ecc_precalc_table[] = {
};
/**
- * nand_calculate_ecc - [NAND Interface] Calculate 3 byte ECC code
- * for 256 byte block
+ * nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256-byte block
* @mtd: MTD block structure
* @dat: raw data
* @ecc_code: buffer for ECC
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 21743658d15..fbeedc3184e 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -237,11 +237,6 @@ static int __init sharpsl_nand_init(void)
}
}
- if (machine_is_husky() || machine_is_borzoi() || machine_is_akita()) {
- /* Need to use small eraseblock size for backward compatibility */
- sharpsl_mtd->flags |= MTD_NO_VIRTBLOCKS;
- }
-
add_mtd_partitions(sharpsl_mtd, sharpsl_partition_info, nr_partitions);
/* Return happy */
@@ -255,8 +250,6 @@ module_init(sharpsl_nand_init);
*/
static void __exit sharpsl_nand_cleanup(void)
{
- struct nand_chip *this = (struct nand_chip *)&sharpsl_mtd[1];
-
/* Release resources, unregister device */
nand_release(sharpsl_mtd);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 19:13:13 +0000