X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmtd%2Fdevices%2Fdoc2000.c;h=fe708695fae2b5aad96262918b03dc4877d7aff7;hb=5d0dd51ddb446e7c058023420f5b7d4404501980;hp=fefbf5eaf80514f92421e149518413281d158a22;hpb=a91482bdcc2e0f6035702e46f1b99043a0893346;p=linux-2.6.git diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c index fefbf5eaf..fe708695f 100644 --- a/drivers/mtd/devices/doc2000.c +++ b/drivers/mtd/devices/doc2000.c @@ -4,7 +4,7 @@ * (c) 1999 Machine Vision Holdings, Inc. * (c) 1999, 2000 David Woodhouse * - * $Id: doc2000.c,v 1.62 2004/08/09 14:04:02 dwmw2 Exp $ + * $Id: doc2000.c,v 1.53 2003/06/11 09:45:19 dwmw2 Exp $ */ #include @@ -19,14 +19,12 @@ #include #include #include -#include #include #include #include #define DOC_SUPPORT_2000 -#define DOC_SUPPORT_2000TSOP #define DOC_SUPPORT_MILLENNIUM #ifdef DOC_SUPPORT_2000 @@ -35,7 +33,7 @@ #define DoC_is_2000(doc) (0) #endif -#if defined(DOC_SUPPORT_2000TSOP) || defined(DOC_SUPPORT_MILLENNIUM) +#ifdef DOC_SUPPORT_MILLENNIUM #define DoC_is_Millennium(doc) (doc->ChipID == DOC_ChipID_DocMil) #else #define DoC_is_Millennium(doc) (0) @@ -55,12 +53,11 @@ static int doc_read(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); 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); + size_t *retlen, u_char *buf, u_char *eccbuf, + struct nand_oobinfo *unused); 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_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel); + size_t *retlen, const u_char *buf, u_char *eccbuf, + struct nand_oobinfo *unused); static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, size_t *retlen, u_char *buf); static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len, @@ -97,10 +94,6 @@ static int _DoC_WaitReady(struct DiskOnChip *doc) /* Out-of-line routine to wait for chip response */ while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) { - /* issue 2 read from NOP register after reading from CDSNControl register - see Software Requirement 11.4 item 2. */ - DoC_Delay(doc, 2); - if (time_after(jiffies, timeo)) { DEBUG(MTD_DEBUG_LEVEL2, "_DoC_WaitReady timed out.\n"); return -EIO; @@ -154,8 +147,6 @@ static inline int DoC_Command(struct DiskOnChip *doc, unsigned char command, /* Send the command */ WriteDOC_(command, docptr, doc->ioreg); - if (DoC_is_Millennium(doc)) - WriteDOC(command, docptr, WritePipeTerm); /* Lower the CLE line */ WriteDOC(xtraflags | CDSN_CTRL_CE, docptr, CDSNControl); @@ -217,9 +208,6 @@ static int DoC_Address(struct DiskOnChip *doc, int numbytes, unsigned long ofs, } } - if (DoC_is_Millennium(doc)) - WriteDOC(ofs & 0xff, docptr, WritePipeTerm); - DoC_Delay(doc, 2); /* Needed for some slow flash chips. mf. */ /* FIXME: The SlowIO's for millennium could be replaced by @@ -358,25 +346,15 @@ static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip) /* Read the manufacturer and device id codes from the device */ - if (DoC_is_Millennium(doc)) { - DoC_Delay(doc, 2); - dummy = ReadDOC(doc->virtadr, ReadPipeInit); - mfr = ReadDOC(doc->virtadr, LastDataRead); + /* CDSN Slow IO register see Software Requirement 11.4 item 5. */ + dummy = ReadDOC(doc->virtadr, CDSNSlowIO); + DoC_Delay(doc, 2); + mfr = ReadDOC_(doc->virtadr, doc->ioreg); - DoC_Delay(doc, 2); - dummy = ReadDOC(doc->virtadr, ReadPipeInit); - id = ReadDOC(doc->virtadr, LastDataRead); - } else { - /* CDSN Slow IO register see Software Req 11.4 item 5. */ - dummy = ReadDOC(doc->virtadr, CDSNSlowIO); - DoC_Delay(doc, 2); - mfr = ReadDOC_(doc->virtadr, doc->ioreg); - - /* CDSN Slow IO register see Software Req 11.4 item 5. */ - dummy = ReadDOC(doc->virtadr, CDSNSlowIO); - DoC_Delay(doc, 2); - id = ReadDOC_(doc->virtadr, doc->ioreg); - } + /* CDSN Slow IO register see Software Requirement 11.4 item 5. */ + dummy = ReadDOC(doc->virtadr, CDSNSlowIO); + DoC_Delay(doc, 2); + id = ReadDOC_(doc->virtadr, doc->ioreg); /* No response - return failure */ if (mfr == 0xff || mfr == 0) @@ -410,10 +388,11 @@ static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip) if (!doc->mfr) { doc->mfr = mfr; doc->id = id; - doc->chipshift = - ffs((nand_flash_ids[i].chipsize << 20)) - 1; - doc->page256 = (nand_flash_ids[i].pagesize == 256) ? 1 : 0; - doc->pageadrlen = doc->chipshift > 25 ? 3 : 2; + doc->chipshift = + nand_flash_ids[i].chipshift; + doc->page256 = nand_flash_ids[i].page256; + doc->pageadrlen = + nand_flash_ids[i].chipshift > 25 ? 3 : 2; doc->erasesize = nand_flash_ids[i].erasesize; return 1; @@ -433,16 +412,20 @@ static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip) /* DoC_ScanChips: Find all NAND chips present in a DiskOnChip, and identify them */ -static void DoC_ScanChips(struct DiskOnChip *this, int maxchips) +static void DoC_ScanChips(struct DiskOnChip *this) { int floor, chip; int numchips[MAX_FLOORS]; + int maxchips = MAX_CHIPS; int ret = 1; this->numchips = 0; this->mfr = 0; this->id = 0; + if (DoC_is_Millennium(this)) + maxchips = MAX_CHIPS_MIL; + /* For each floor, find the number of valid chips it contains */ for (floor = 0; floor < MAX_FLOORS; floor++) { ret = 1; @@ -534,7 +517,6 @@ static void DoC2k_init(struct mtd_info *mtd) { struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv; struct DiskOnChip *old = NULL; - int maxchips; /* We must avoid being called twice for the same device. */ @@ -558,28 +540,14 @@ static void DoC2k_init(struct mtd_info *mtd) switch (this->ChipID) { - case DOC_ChipID_Doc2kTSOP: - mtd->name = "DiskOnChip 2000 TSOP"; - this->ioreg = DoC_Mil_CDSN_IO; - /* Pretend it's a Millennium */ - this->ChipID = DOC_ChipID_DocMil; - maxchips = MAX_CHIPS; - break; case DOC_ChipID_Doc2k: mtd->name = "DiskOnChip 2000"; this->ioreg = DoC_2k_CDSN_IO; - maxchips = MAX_CHIPS; break; case DOC_ChipID_DocMil: mtd->name = "DiskOnChip Millennium"; this->ioreg = DoC_Mil_CDSN_IO; - maxchips = MAX_CHIPS_MIL; break; - default: - printk("Unknown ChipID 0x%02x\n", this->ChipID); - kfree(mtd); - iounmap((void *) this->virtadr); - return; } printk(KERN_NOTICE "%s found at address 0x%lX\n", mtd->name, @@ -600,7 +568,6 @@ static void DoC2k_init(struct mtd_info *mtd) mtd->write = doc_write; mtd->read_ecc = doc_read_ecc; mtd->write_ecc = doc_write_ecc; - mtd->writev_ecc = doc_writev_ecc; mtd->read_oob = doc_read_oob; mtd->write_oob = doc_write_oob; mtd->sync = NULL; @@ -613,7 +580,7 @@ static void DoC2k_init(struct mtd_info *mtd) init_MUTEX(&this->lock); /* Ident all the chips present. */ - DoC_ScanChips(this, maxchips); + DoC_ScanChips(this); if (!this->totlen) { kfree(mtd); @@ -636,7 +603,8 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, } 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) + size_t * retlen, u_char * buf, u_char * eccbuf, + struct nand_oobinfo *unused) { struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv; unsigned long docptr; @@ -644,7 +612,6 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, unsigned char syndrome[6]; volatile char dummy; int i, len256 = 0, ret=0; - size_t left = len; docptr = this->virtadr; @@ -654,131 +621,122 @@ static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len, down(&this->lock); - *retlen = 0; - while (left) { - len = left; + /* Don't allow a single read to cross a 512-byte block boundary */ + if (from + len > ((from | 0x1ff) + 1)) + len = ((from | 0x1ff) + 1) - from; - /* Don't allow a single read to cross a 512-byte block boundary */ - if (from + len > ((from | 0x1ff) + 1)) - len = ((from | 0x1ff) + 1) - from; + /* The ECC will not be calculated correctly if less than 512 is read */ + if (len != 0x200 && eccbuf) + printk(KERN_WARNING + "ECC needs a full sector read (adr: %lx size %lx)\n", + (long) from, (long) len); - /* The ECC will not be calculated correctly if less than 512 is read */ - if (len != 0x200 && eccbuf) - printk(KERN_WARNING - "ECC needs a full sector read (adr: %lx size %lx)\n", - (long) from, (long) len); + /* printk("DoC_Read (adr: %lx size %lx)\n", (long) from, (long) len); */ - /* printk("DoC_Read (adr: %lx size %lx)\n", (long) from, (long) len); */ + /* Find the chip which is to be used and select it */ + mychip = &this->chips[from >> (this->chipshift)]; - /* Find the chip which is to be used and select it */ - mychip = &this->chips[from >> (this->chipshift)]; + if (this->curfloor != mychip->floor) { + DoC_SelectFloor(this, mychip->floor); + DoC_SelectChip(this, mychip->chip); + } else if (this->curchip != mychip->chip) { + DoC_SelectChip(this, mychip->chip); + } - if (this->curfloor != mychip->floor) { - DoC_SelectFloor(this, mychip->floor); - DoC_SelectChip(this, mychip->chip); - } else if (this->curchip != mychip->chip) { - DoC_SelectChip(this, mychip->chip); - } + this->curfloor = mychip->floor; + this->curchip = mychip->chip; - this->curfloor = mychip->floor; - this->curchip = mychip->chip; + DoC_Command(this, + (!this->page256 + && (from & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0, + CDSN_CTRL_WP); + 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); + } - DoC_Command(this, - (!this->page256 - && (from & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0, - CDSN_CTRL_WP); - DoC_Address(this, ADDR_COLUMN_PAGE, from, CDSN_CTRL_WP, - CDSN_CTRL_ECC_IO); + /* treat crossing 256-byte sector for 2M x 8bits devices */ + if (this->page256 && from + len > (from | 0xff) + 1) { + len256 = (from | 0xff) + 1 - from; + DoC_ReadBuf(this, buf, len256); - 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); - } + DoC_Command(this, NAND_CMD_READ0, CDSN_CTRL_WP); + DoC_Address(this, ADDR_COLUMN_PAGE, from + len256, + CDSN_CTRL_WP, CDSN_CTRL_ECC_IO); + } - /* treat crossing 256-byte sector for 2M x 8bits devices */ - if (this->page256 && from + len > (from | 0xff) + 1) { - len256 = (from | 0xff) + 1 - from; - DoC_ReadBuf(this, buf, len256); + DoC_ReadBuf(this, &buf[len256], len - len256); - DoC_Command(this, NAND_CMD_READ0, CDSN_CTRL_WP); - DoC_Address(this, ADDR_COLUMN_PAGE, from + len256, - CDSN_CTRL_WP, CDSN_CTRL_ECC_IO); - } + /* Let the caller know we completed it */ + *retlen = len; - DoC_ReadBuf(this, &buf[len256], len - len256); - - /* 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); - } + 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); - /* 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); - } - - /* according to 11.4.1, we need to wait for the busy line - * drop if we read to the end of the page. */ - if(0 == ((from + len) & 0x1ff)) - { - DoC_WaitReady(this); - } + /* disable the ECC engine */ + WriteDOC(DOC_ECC_DIS, docptr , ECCConf); + } - from += len; - left -= len; - buf += len; + /* according to 11.4.1, we need to wait for the busy line + * drop if we read to the end of the page. */ + if(0 == ((from + *retlen) & 0x1ff)) + { + DoC_WaitReady(this); } up(&this->lock); @@ -795,7 +753,8 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len, 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) + u_char * eccbuf, + struct nand_oobinfo *unused) { struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv; int di; /* Yes, DI is a hangover from when I was disassembling the binary driver */ @@ -803,8 +762,6 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, volatile char dummy; int len256 = 0; struct Nand *mychip; - size_t left = len; - int status; docptr = this->virtadr; @@ -814,133 +771,65 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, down(&this->lock); - *retlen = 0; - while (left) { - len = left; - - /* Don't allow a single write to cross a 512-byte block boundary */ - if (to + len > ((to | 0x1ff) + 1)) - len = ((to | 0x1ff) + 1) - to; + /* Don't allow a single write to cross a 512-byte block boundary */ + if (to + len > ((to | 0x1ff) + 1)) + len = ((to | 0x1ff) + 1) - to; - /* The ECC will not be calculated correctly if less than 512 is written */ -/* DBB- - if (len != 0x200 && eccbuf) - printk(KERN_WARNING - "ECC needs a full sector write (adr: %lx size %lx)\n", - (long) to, (long) len); - -DBB */ - - /* printk("DoC_Write (adr: %lx size %lx)\n", (long) to, (long) len); */ + /* The ECC will not be calculated correctly if less than 512 is written */ + if (len != 0x200 && eccbuf) + printk(KERN_WARNING + "ECC needs a full sector write (adr: %lx size %lx)\n", + (long) to, (long) len); - /* Find the chip which is to be used and select it */ - mychip = &this->chips[to >> (this->chipshift)]; + /* printk("DoC_Write (adr: %lx size %lx)\n", (long) to, (long) len); */ - if (this->curfloor != mychip->floor) { - DoC_SelectFloor(this, mychip->floor); - DoC_SelectChip(this, mychip->chip); - } else if (this->curchip != mychip->chip) { - DoC_SelectChip(this, mychip->chip); - } - - this->curfloor = mychip->floor; - this->curchip = mychip->chip; - - /* Set device to main plane of flash */ - DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP); - DoC_Command(this, - (!this->page256 - && (to & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0, - CDSN_CTRL_WP); - - 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); - } - - /* treat crossing 256-byte sector for 2M x 8bits devices */ - if (this->page256 && to + len > (to | 0xff) + 1) { - len256 = (to | 0xff) + 1 - to; - DoC_WriteBuf(this, buf, len256); - - DoC_Command(this, NAND_CMD_PAGEPROG, 0); - - DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP); - /* There's an implicit DoC_WaitReady() in DoC_Command */ - - dummy = ReadDOC(docptr, CDSNSlowIO); - DoC_Delay(this, 2); - - if (ReadDOC_(docptr, this->ioreg) & 1) { - printk(KERN_ERR "Error programming flash\n"); - /* Error in programming */ - *retlen = 0; - up(&this->lock); - return -EIO; - } - - DoC_Command(this, NAND_CMD_SEQIN, 0); - DoC_Address(this, ADDR_COLUMN_PAGE, to + len256, 0, - CDSN_CTRL_ECC_IO); - } - - DoC_WriteBuf(this, &buf[len256], len - len256); + /* Find the chip which is to be used and select it */ + mychip = &this->chips[to >> (this->chipshift)]; - if (eccbuf) { - WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr, - CDSNControl); + if (this->curfloor != mychip->floor) { + DoC_SelectFloor(this, mychip->floor); + DoC_SelectChip(this, mychip->chip); + } else if (this->curchip != mychip->chip) { + DoC_SelectChip(this, mychip->chip); + } - 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); - } + this->curfloor = mychip->floor; + this->curchip = mychip->chip; - WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_FLASH_IO | CDSN_CTRL_CE, docptr, - CDSNControl); + /* Set device to main plane of flash */ + DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP); + DoC_Command(this, + (!this->page256 + && (to & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0, + CDSN_CTRL_WP); - /* Read the ECC data through the DiskOnChip ECC logic */ - for (di = 0; di < 6; di++) { - eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di); - } + DoC_Command(this, NAND_CMD_SEQIN, 0); + DoC_Address(this, ADDR_COLUMN_PAGE, to, 0, CDSN_CTRL_ECC_IO); - /* Reset the ECC engine */ - WriteDOC(DOC_ECC_DIS, docptr, ECCConf); + 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); + } -#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]); -#endif - } + /* treat crossing 256-byte sector for 2M x 8bits devices */ + if (this->page256 && to + len > (to | 0xff) + 1) { + len256 = (to | 0xff) + 1 - to; + DoC_WriteBuf(this, buf, len256); DoC_Command(this, NAND_CMD_PAGEPROG, 0); DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP); /* There's an implicit DoC_WaitReady() in DoC_Command */ - if (DoC_is_Millennium(this)) { - ReadDOC(docptr, ReadPipeInit); - status = ReadDOC(docptr, LastDataRead); - } else { - dummy = ReadDOC(docptr, CDSNSlowIO); - DoC_Delay(this, 2); - status = ReadDOC_(docptr, this->ioreg); - } + dummy = ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(this, 2); - if (status & 1) { + if (ReadDOC_(docptr, this->ioreg) & 1) { printk(KERN_ERR "Error programming flash\n"); /* Error in programming */ *retlen = 0; @@ -948,97 +837,82 @@ static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len, return -EIO; } - /* Let the caller know we completed it */ - *retlen += len; - - if (eccbuf) { - unsigned char x[8]; - size_t dummy; - int ret; - - /* Write the ECC data to flash */ - for (di=0; di<6; di++) - x[di] = eccbuf[di]; - - x[6]=0x55; - x[7]=0x55; - - ret = doc_write_oob_nolock(mtd, to, 8, &dummy, x); - if (ret) { - up(&this->lock); - return ret; - } - } - - to += len; - left -= len; - buf += len; + DoC_Command(this, NAND_CMD_SEQIN, 0); + DoC_Address(this, ADDR_COLUMN_PAGE, to + len256, 0, + CDSN_CTRL_ECC_IO); } - up(&this->lock); - return 0; -} - -static int doc_writev_ecc(struct mtd_info *mtd, const struct kvec *vecs, - unsigned long count, loff_t to, size_t *retlen, - u_char *eccbuf, struct nand_oobinfo *oobsel) -{ - static char static_buf[512]; - static DECLARE_MUTEX(writev_buf_sem); + DoC_WriteBuf(this, &buf[len256], len - len256); - size_t totretlen = 0; - size_t thisvecofs = 0; - int ret= 0; + if (eccbuf) { + WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr, + CDSNControl); - down(&writev_buf_sem); + 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); + } - while(count) { - size_t thislen, thisretlen; - unsigned char *buf; + /* Read the ECC data through the DiskOnChip ECC logic */ + for (di = 0; di < 6; di++) { + eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di); + } - buf = vecs->iov_base + thisvecofs; - thislen = vecs->iov_len - thisvecofs; + /* 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]); +#endif + } - if (thislen >= 512) { - thislen = thislen & ~(512-1); - thisvecofs += thislen; - } else { - /* Not enough to fill a page. Copy into buf */ - memcpy(static_buf, buf, thislen); - buf = &static_buf[thislen]; - - while(count && thislen < 512) { - vecs++; - count--; - thisvecofs = min((512-thislen), vecs->iov_len); - memcpy(buf, vecs->iov_base, thisvecofs); - thislen += thisvecofs; - buf += thisvecofs; - } - buf = static_buf; - } - if (count && thisvecofs == vecs->iov_len) { - thisvecofs = 0; - vecs++; - count--; - } - ret = doc_write_ecc(mtd, to, thislen, &thisretlen, buf, eccbuf, oobsel); + DoC_Command(this, NAND_CMD_PAGEPROG, 0); - totretlen += thisretlen; + DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP); + /* There's an implicit DoC_WaitReady() in DoC_Command */ - if (ret || thisretlen != thislen) - break; + dummy = ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(this, 2); - to += thislen; - } + if (ReadDOC_(docptr, this->ioreg) & 1) { + printk(KERN_ERR "Error programming flash\n"); + /* Error in programming */ + *retlen = 0; + up(&this->lock); + return -EIO; + } - up(&writev_buf_sem); - *retlen = totretlen; - return ret; + /* Let the caller know we completed it */ + *retlen = len; + + if (eccbuf) { + unsigned char x[8]; + size_t dummy; + int ret; + + /* Write the ECC data to flash */ + for (di=0; di<6; di++) + x[di] = eccbuf[di]; + + x[6]=0x55; + x[7]=0x55; + + ret = doc_write_oob_nolock(mtd, to, 8, &dummy, x); + up(&this->lock); + return ret; + } + up(&this->lock); + return 0; } - static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len, size_t * retlen, u_char * buf) { @@ -1108,7 +982,6 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len, unsigned long docptr = this->virtadr; struct Nand *mychip = &this->chips[ofs >> this->chipshift]; volatile int dummy; - int status; // printk("doc_write_oob(%lx, %d): %2.2X %2.2X %2.2X %2.2X ... %2.2X %2.2X .. %2.2X %2.2X\n",(long)ofs, len, // buf[0], buf[1], buf[2], buf[3], buf[8], buf[9], buf[14],buf[15]); @@ -1157,16 +1030,10 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len, DoC_Command(this, NAND_CMD_STATUS, 0); /* DoC_WaitReady() is implicit in DoC_Command */ - if (DoC_is_Millennium(this)) { - ReadDOC(docptr, ReadPipeInit); - status = ReadDOC(docptr, LastDataRead); - } else { - dummy = ReadDOC(docptr, CDSNSlowIO); - DoC_Delay(this, 2); - status = ReadDOC_(docptr, this->ioreg); - } + dummy = ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(this, 2); - if (status & 1) { + if (ReadDOC_(docptr, this->ioreg) & 1) { printk(KERN_ERR "Error programming oob data\n"); /* There was an error */ *retlen = 0; @@ -1182,16 +1049,10 @@ static int doc_write_oob_nolock(struct mtd_info *mtd, loff_t ofs, size_t len, DoC_Command(this, NAND_CMD_STATUS, 0); /* DoC_WaitReady() is implicit in DoC_Command */ - if (DoC_is_Millennium(this)) { - ReadDOC(docptr, ReadPipeInit); - status = ReadDOC(docptr, LastDataRead); - } else { - dummy = ReadDOC(docptr, CDSNSlowIO); - DoC_Delay(this, 2); - status = ReadDOC_(docptr, this->ioreg); - } + dummy = ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(this, 2); - if (status & 1) { + if (ReadDOC_(docptr, this->ioreg) & 1) { printk(KERN_ERR "Error programming oob data\n"); /* There was an error */ *retlen = 0; @@ -1224,7 +1085,6 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr) volatile int dummy; unsigned long docptr; struct Nand *mychip; - int status; down(&this->lock); @@ -1256,16 +1116,10 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr) DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP); - if (DoC_is_Millennium(this)) { - ReadDOC(docptr, ReadPipeInit); - status = ReadDOC(docptr, LastDataRead); - } else { - dummy = ReadDOC(docptr, CDSNSlowIO); - DoC_Delay(this, 2); - status = ReadDOC_(docptr, this->ioreg); - } - - if (status & 1) { + dummy = ReadDOC(docptr, CDSNSlowIO); + DoC_Delay(this, 2); + + if (ReadDOC_(docptr, this->ioreg) & 1) { printk(KERN_ERR "Error erasing at 0x%x\n", ofs); /* There was an error */ instr->state = MTD_ERASE_FAILED; @@ -1277,7 +1131,8 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *instr) instr->state = MTD_ERASE_DONE; callback: - mtd_erase_callback(instr); + if (instr->callback) + instr->callback(instr); up(&this->lock); return 0;