diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nand/Makefile | 1 | ||||
| -rw-r--r-- | drivers/nand/diskonchip.c | 198 | ||||
| -rw-r--r-- | drivers/nand/nand_base.c | 494 | ||||
| -rw-r--r-- | drivers/nand/nand_bbt.c | 242 | ||||
| -rw-r--r-- | drivers/nand/nand_ecc.c | 45 | ||||
| -rw-r--r-- | drivers/nand/nand_ids.c | 28 |
6 files changed, 502 insertions, 506 deletions
diff --git a/drivers/nand/Makefile b/drivers/nand/Makefile index 3906bf951d..96f67dfca8 100644 --- a/drivers/nand/Makefile +++ b/drivers/nand/Makefile @@ -14,4 +14,3 @@ $(LIB): $(OBJS) $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@ sinclude .depend - diff --git a/drivers/nand/diskonchip.c b/drivers/nand/diskonchip.c index 02135c3ac2..b421d4c1c3 100644 --- a/drivers/nand/diskonchip.c +++ b/drivers/nand/diskonchip.c @@ -1,4 +1,4 @@ -/* +/* * drivers/mtd/nand/diskonchip.c * * (C) 2003 Red Hat, Inc. @@ -8,12 +8,12 @@ * Author: David Woodhouse <dwmw2@infradead.org> * Additional Diskonchip 2000 and Millennium support by Dan Brown <dan_brown@ieee.org> * Diskonchip Millennium Plus support by Kalev Lember <kalev@smartlink.ee> - * + * * Error correction code lifted from the old docecc code - * Author: Fabrice Bellard (fabrice.bellard@netgem.com) + * Author: Fabrice Bellard (fabrice.bellard@netgem.com) * Copyright (C) 2000 Netgem S.A. * converted to the generic Reed-Solomon library by Thomas Gleixner <tglx@linutronix.de> - * + * * Interface to generic NAND code for M-Systems DiskOnChip devices * * $Id: diskonchip.c,v 1.45 2005/01/05 18:05:14 dwmw2 Exp $ @@ -42,25 +42,25 @@ static unsigned long __initdata doc_locations[] = { #if defined (__alpha__) || defined(__i386__) || defined(__x86_64__) #ifdef CONFIG_MTD_DISKONCHIP_PROBE_HIGH - 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000, + 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000, 0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000, - 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000, - 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000, + 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000, + 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000, 0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000, #else /* CONFIG_MTD_DOCPROBE_HIGH */ - 0xc8000, 0xca000, 0xcc000, 0xce000, + 0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000, 0xd4000, 0xd6000, - 0xd8000, 0xda000, 0xdc000, 0xde000, - 0xe0000, 0xe2000, 0xe4000, 0xe6000, + 0xd8000, 0xda000, 0xdc000, 0xde000, + 0xe0000, 0xe2000, 0xe4000, 0xe6000, 0xe8000, 0xea000, 0xec000, 0xee000, #endif /* CONFIG_MTD_DOCPROBE_HIGH */ #elif defined(__PPC__) 0xe4000000, #elif defined(CONFIG_MOMENCO_OCELOT) 0x2f000000, - 0xff000000, + 0xff000000, #elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C) - 0xff000000, + 0xff000000, ##else #warning Unknown architecture for DiskOnChip. No default probe locations defined #endif @@ -142,7 +142,7 @@ MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe /* the Reed Solomon control structure */ static struct rs_control *rs_decoder; -/* +/* * The HW decoder in the DoC ASIC's provides us a error syndrome, * which we must convert to a standard syndrom usable by the generic * Reed-Solomon library code. @@ -167,8 +167,8 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) /* Initialize the syndrom buffer */ for (i = 0; i < NROOTS; i++) s[i] = ds[0]; - /* - * Evaluate + /* + * Evaluate * s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0] * where x = alpha^(FCR + i) */ @@ -192,7 +192,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) if (nerr < 0) return nerr; - /* + /* * Correct the errors. The bitpositions are a bit of magic, * but they are given by the design of the de/encoder circuit * in the DoC ASIC's. @@ -209,7 +209,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) can be modified since pos is even */ index = (pos >> 3) ^ 1; bitpos = pos & 7; - if ((index >= 0 && index < SECTOR_SIZE) || + if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) { val = (uint8_t) (errval[i] >> (2 + bitpos)); parity ^= val; @@ -220,7 +220,7 @@ static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc) bitpos = (bitpos + 10) & 7; if (bitpos == 0) bitpos = 8; - if ((index >= 0 && index < SECTOR_SIZE) || + if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) { val = (uint8_t)(errval[i] << (8 - bitpos)); parity ^= val; @@ -237,7 +237,7 @@ static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) { volatile char dummy; int i; - + for (i = 0; i < cycles; i++) { if (DoC_is_Millennium(doc)) dummy = ReadDOC(doc->virtadr, NOP); @@ -246,7 +246,7 @@ static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) else dummy = ReadDOC(doc->virtadr, DOCStatus); } - + } #define CDSN_CTRL_FR_B_MASK (CDSN_CTRL_FR_B0 | CDSN_CTRL_FR_B1) @@ -254,7 +254,7 @@ static void DoC_Delay(struct doc_priv *doc, unsigned short cycles) /* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */ static int _DoC_WaitReady(struct doc_priv *doc) { - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; unsigned long timeo = jiffies + (HZ * 10); if(debug) printk("_DoC_WaitReady...\n"); @@ -284,7 +284,7 @@ static int _DoC_WaitReady(struct doc_priv *doc) static inline int DoC_WaitReady(struct doc_priv *doc) { - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int ret = 0; if (DoC_is_MillenniumPlus(doc)) { @@ -310,7 +310,7 @@ static void doc2000_write_byte(struct mtd_info *mtd, u_char datum) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; if(debug)printk("write_byte %02x\n", datum); WriteDOC(datum, docptr, CDSNSlowIO); @@ -321,7 +321,7 @@ static u_char doc2000_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; u_char ret; ReadDOC(docptr, CDSNSlowIO); @@ -331,12 +331,12 @@ static u_char doc2000_read_byte(struct mtd_info *mtd) return ret; } -static void doc2000_writebuf(struct mtd_info *mtd, +static void doc2000_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug)printk("writebuf of %d bytes: ", len); for (i=0; i < len; i++) { @@ -347,12 +347,12 @@ static void doc2000_writebuf(struct mtd_info *mtd, if (debug) printk("\n"); } -static void doc2000_readbuf(struct mtd_info *mtd, +static void doc2000_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug)printk("readbuf of %d bytes: ", len); @@ -362,12 +362,12 @@ static void doc2000_readbuf(struct mtd_info *mtd, } } -static void doc2000_readbuf_dword(struct mtd_info *mtd, +static void doc2000_readbuf_dword(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug) printk("readbuf_dword of %d bytes: ", len); @@ -383,12 +383,12 @@ static void doc2000_readbuf_dword(struct mtd_info *mtd, } } -static int doc2000_verifybuf(struct mtd_info *mtd, +static int doc2000_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; for (i=0; i < len; i++) @@ -435,7 +435,7 @@ static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr) this->read_buf = &doc2000_readbuf_dword; } } - + return ret; } @@ -466,7 +466,7 @@ static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state) struct doc_priv *doc = this->priv; int status; - + DoC_WaitReady(doc); this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); DoC_WaitReady(doc); @@ -479,7 +479,7 @@ static void doc2001_write_byte(struct mtd_info *mtd, u_char datum) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; WriteDOC(datum, docptr, CDSNSlowIO); WriteDOC(datum, docptr, Mil_CDSN_IO); @@ -490,22 +490,22 @@ static u_char doc2001_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; - //ReadDOC(docptr, CDSNSlowIO); + /*ReadDOC(docptr, CDSNSlowIO); */ /* 11.4.5 -- delay twice to allow extended length cycle */ DoC_Delay(doc, 2); ReadDOC(docptr, ReadPipeInit); - //return ReadDOC(docptr, Mil_CDSN_IO); + /*return ReadDOC(docptr, Mil_CDSN_IO); */ return ReadDOC(docptr, LastDataRead); } -static void doc2001_writebuf(struct mtd_info *mtd, +static void doc2001_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; for (i=0; i < len; i++) @@ -514,12 +514,12 @@ static void doc2001_writebuf(struct mtd_info *mtd, WriteDOC(0x00, docptr, WritePipeTerm); } -static void doc2001_readbuf(struct mtd_info *mtd, +static void doc2001_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; /* Start read pipeline */ @@ -532,12 +532,12 @@ static void doc2001_readbuf(struct mtd_info *mtd, buf[i] = ReadDOC(docptr, LastDataRead); } -static int doc2001_verifybuf(struct mtd_info *mtd, +static int doc2001_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; /* Start read pipeline */ @@ -557,22 +557,22 @@ static u_char doc2001plus_read_byte(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; u_char ret; - ReadDOC(docptr, Mplus_ReadPipeInit); - ReadDOC(docptr, Mplus_ReadPipeInit); - ret = ReadDOC(docptr, Mplus_LastDataRead); + ReadDOC(docptr, Mplus_ReadPipeInit); + ReadDOC(docptr, Mplus_ReadPipeInit); + ret = ReadDOC(docptr, Mplus_LastDataRead); if (debug) printk("read_byte returns %02x\n", ret); return ret; } -static void doc2001plus_writebuf(struct mtd_info *mtd, +static void doc2001plus_writebuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug)printk("writebuf of %d bytes: ", len); @@ -584,12 +584,12 @@ static void doc2001plus_writebuf(struct mtd_info *mtd, if (debug) printk("\n"); } -static void doc2001plus_readbuf(struct mtd_info *mtd, +static void doc2001plus_readbuf(struct mtd_info *mtd, u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug)printk("readbuf of %d bytes: ", len); @@ -614,12 +614,12 @@ static void doc2001plus_readbuf(struct mtd_info *mtd, if (debug) printk("\n"); } -static int doc2001plus_verifybuf(struct mtd_info *mtd, +static int doc2001plus_verifybuf(struct mtd_info *mtd, const u_char *buf, int len) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; if (debug)printk("verifybuf of %d bytes: ", len); @@ -645,7 +645,7 @@ static void doc2001plus_select_chip(struct mtd_info *mtd, int chip) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int floor = 0; if(debug)printk("select chip (%d)\n", chip); @@ -671,7 +671,7 @@ static void doc200x_select_chip(struct mtd_info *mtd, int chip) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int floor = 0; if(debug)printk("select chip (%d)\n", chip); @@ -698,7 +698,7 @@ static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; switch(cmd) { case NAND_CTL_SETNCE: @@ -736,7 +736,7 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* * Must terminate write pipeline before sending any commands @@ -794,7 +794,7 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col WriteDOC(0, docptr, Mplus_FlashControl); } - /* + /* * program and erase have their own busy handlers * status and sequential in needs no delay */ @@ -819,7 +819,7 @@ static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int col /* This applies to read commands */ default: - /* + /* * If we don't have access to the busy pin, we apply the given * command delay */ @@ -840,7 +840,7 @@ static int doc200x_dev_ready(struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; if (DoC_is_MillenniumPlus(doc)) { /* 11.4.2 -- must NOP four times before checking FR/B# */ @@ -878,7 +878,7 @@ static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* Prime the ECC engine */ switch(mode) { @@ -897,7 +897,7 @@ static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode) { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; /* Prime the ECC engine */ switch(mode) { @@ -918,7 +918,7 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, { struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; int i; int emptymatch = 1; @@ -942,7 +942,7 @@ static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, for (i = 0; i < 6; i++) { if (DoC_is_MillenniumPlus(doc)) ecc_code[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i); - else + else ecc_code[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i); if (ecc_code[i] != empty_write_ecc[i]) emptymatch = 0; @@ -976,10 +976,10 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ int i, ret = 0; struct nand_chip *this = mtd->priv; struct doc_priv *doc = this->priv; - void __iomem *docptr = doc->virtadr; + void __iomem *docptr = doc->virtadr; volatile u_char dummy; int emptymatch = 1; - + /* flush the pipeline */ if (DoC_is_2000(doc)) { dummy = ReadDOC(docptr, 2k_ECCStatus); @@ -994,7 +994,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ dummy = ReadDOC(docptr, ECCConf); dummy = ReadDOC(docptr, ECCConf); } - + /* Error occured ? */ if (dummy & 0x80) { for (i = 0; i < 6; i++) { @@ -1032,7 +1032,7 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc); if (ret > 0) printk(KERN_ERR "doc200x_correct_data corrected %d errors\n", ret); - } + } if (DoC_is_MillenniumPlus(doc)) WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf); else @@ -1043,16 +1043,16 @@ static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ } return ret; } - -//u_char mydatabuf[528]; + +/*u_char mydatabuf[528]; */ static struct nand_oobinfo doc200x_oobinfo = { - .useecc = MTD_NANDECC_AUTOPLACE, - .eccbytes = 6, - .eccpos = {0, 1, 2, 3, 4, 5}, - .oobfree = { {8, 8} } + .useecc = MTD_NANDECC_AUTOPLACE, + .eccbytes = 6, + .eccpos = {0, 1, 2, 3, 4, 5}, + .oobfree = { {8, 8} } }; - + /* Find the (I)NFTL Media Header, and optionally also the mirror media header. On sucessful return, buf will contain a copy of the media header for further processing. id is the string to scan for, and will presumably be @@ -1068,7 +1068,7 @@ static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, int ret; size_t retlen; - end = min(end, mtd->size); // paranoia + end = min(end, mtd->size); /* paranoia */ for (offs = 0; offs < end; offs += mtd->erasesize) { ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf); if (retlen != mtd->oobblock) continue; @@ -1122,8 +1122,8 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out; mh = (struct NFTLMediaHeader *) buf; -//#ifdef CONFIG_MTD_DEBUG_VERBOSE -// if (CONFIG_MTD_DEBUG_VERBOSE >= 2) +/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ +/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ printk(KERN_INFO " DataOrgID = %s\n" " NumEraseUnits = %d\n" " FirstPhysicalEUN = %d\n" @@ -1132,7 +1132,7 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, mh->DataOrgID, mh->NumEraseUnits, mh->FirstPhysicalEUN, mh->FormattedSize, mh->UnitSizeFactor); -//#endif +/*#endif */ blocks = mtd->size >> this->phys_erase_shift; maxblocks = min(32768U, mtd->erasesize - psize); @@ -1175,9 +1175,9 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, offs <<= this->page_shift; offs += mtd->erasesize; - //parts[0].name = " DiskOnChip Boot / Media Header partition"; - //parts[0].offset = 0; - //parts[0].size = offs; + /*parts[0].name = " DiskOnChip Boot / Media Header partition"; */ + /*parts[0].offset = 0; */ + /*parts[0].size = offs; */ parts[0].name = " DiskOnChip BDTL partition"; parts[0].offset = offs; @@ -1232,9 +1232,9 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits); mh->FormatFlags = le32_to_cpu(mh->FormatFlags); mh->PercentUsed = le32_to_cpu(mh->PercentUsed); - -//#ifdef CONFIG_MTD_DEBUG_VERBOSE -// if (CONFIG_MTD_DEBUG_VERBOSE >= 2) + +/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ +/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ printk(KERN_INFO " bootRecordID = %s\n" " NoOfBootImageBlocks = %d\n" " NoOfBinaryPartitions = %d\n" @@ -1252,7 +1252,7 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, ((unsigned char *) &mh->OsakVersion)[2] & 0xf, ((unsigned char *) &mh->OsakVersion)[3] & 0xf, mh->PercentUsed); -//#endif +/*#endif */ vshift = this->phys_erase_shift + mh->BlockMultiplierBits; @@ -1278,8 +1278,8 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, ip->spareUnits = le32_to_cpu(ip->spareUnits); ip->Reserved0 = le32_to_cpu(ip->Reserved0); -//#ifdef CONFIG_MTD_DEBUG_VERBOSE -// if (CONFIG_MTD_DEBUG_VERBOSE >= 2) +/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */ +/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */ printk(KERN_INFO " PARTITION[%d] ->\n" " virtualUnits = %d\n" " firstUnit = %d\n" @@ -1289,7 +1289,7 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, i, ip->virtualUnits, ip->firstUnit, ip->lastUnit, ip->flags, ip->spareUnits); -//#endif +/*#endif */ /* if ((i == 0) && (ip->firstUnit > 0)) { @@ -1456,7 +1456,7 @@ static inline int __init doc2001_init(struct mtd_info *mtd) ReadDOC(doc->virtadr, ChipID); if (ReadDOC(doc->virtadr, ChipID) != DOC_ChipID_DocMil) { /* It's not a Millennium; it's one of the newer - DiskOnChip 2000 units with a similar ASIC. + DiskOnChip 2000 units with a similar ASIC. Treat it like a Millennium, except that it can have multiple chips. */ doc2000_count_chips(mtd); @@ -1518,20 +1518,20 @@ static inline int __init doc_probe(unsigned long physadr) * to the DOCControl register. So we store the current contents * of the DOCControl register's location, in case we later decide * that it's not a DiskOnChip, and want to put it back how we - * found it. + * found it. */ save_control = ReadDOC(virtadr, DOCControl); /* Reset the DiskOnChip ASIC */ - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl); - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl); /* Enable the DiskOnChip ASIC */ - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl); - WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, + WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl); ChipID = ReadDOC(virtadr, ChipID); @@ -1614,11 +1614,11 @@ static inline int __init doc_probe(unsigned long physadr) if (ChipID == DOC_ChipID_DocMilPlus16) { WriteDOC(~newval, virtadr, Mplus_AliasResolution); oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution); - WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it + WriteDOC(newval, virtadr, Mplus_AliasResolution); /* restore it */ } else { WriteDOC(~newval, virtadr, AliasResolution); oldval = ReadDOC(doc->virtadr, AliasResolution); - WriteDOC(newval, virtadr, AliasResolution); // restore it + WriteDOC(newval, virtadr, AliasResolution); /* restore it */ } newval = ~newval; if (oldval == newval) { @@ -1726,7 +1726,7 @@ static int __init init_nanddoc(void) int i, ret = 0; /* We could create the decoder on demand, if memory is a concern. - * This way we have it handy, if an error happens + * This way we have it handy, if an error happens * * Symbolsize is 10 (bits) * Primitve polynomial is x^10+x^3+1 diff --git a/drivers/nand/nand_base.c b/drivers/nand/nand_base.c index c423512f18..a7ab8c27ad 100644 --- a/drivers/nand/nand_base.c +++ b/drivers/nand/nand_base.c @@ -5,14 +5,14 @@ * This is the generic MTD driver for NAND flash devices. It should be * capable of working with almost all NAND chips currently available. * Basic support for AG-AND chips is provided. - * + * * Additional technical information is available on * http://www.linux-mtd.infradead.org/tech/nand.html - * + * * Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com) * 2002 Thomas Gleixner (tglx@linutronix.de) * - * 02-08-2004 tglx: support for strange chips, which cannot auto increment + * 02-08-2004 tglx: support for strange chips, which cannot auto increment * pages on read / read_oob * * 03-17-2004 tglx: Check ready before auto increment check. Simon Bayes @@ -21,7 +21,7 @@ * Make reads over block boundaries work too * * 04-14-2004 tglx: first working version for 2k page size chips - * + * * 05-19-2004 tglx: Basic support for Renesas AG-AND chips * * 09-24-2004 tglx: add support for hardware controllers (e.g. ECC) shared @@ -29,8 +29,8 @@ * from Ben Dooks <ben-mtd@fluff.org> * * Credits: - * David Woodhouse for adding multichip support - * + * David Woodhouse for adding multichip support + * * Aleph One Ltd. and Toby Churchill Ltd. for supporting the * rework for 2K page size chips * @@ -68,7 +68,7 @@ #include <linux/mtd/partitions.h> #endif -#else +#endif #include <common.h> @@ -88,8 +88,6 @@ #include <jffs2/jffs2.h> #endif -#endif - /* Define default oob placement schemes for large and small page devices */ static struct nand_oobinfo nand_oob_8 = { .useecc = MTD_NANDECC_AUTOPLACE, @@ -109,8 +107,8 @@ static struct nand_oobinfo nand_oob_64 = { .useecc = MTD_NANDECC_AUTOPLACE, .eccbytes = 24, .eccpos = { - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, + 40, 41, 42, 43, 44, 45, 46, 47, + 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63}, .oobfree = { {2, 38} } }; @@ -156,19 +154,19 @@ static void nand_sync (struct mtd_info *mtd); static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, struct nand_oobinfo *oobsel, int mode); #ifdef CONFIG_MTD_NAND_VERIFY_WRITE -static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, +static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode); #else #define nand_verify_pages(...) (0) #endif - + static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state); /** * nand_release_device - [GENERIC] release chip * @mtd: MTD device structure - * - * Deselect, release chip lock and wake up anyone waiting on the device + * + * Deselect, release chip lock and wake up anyone waiting on the device */ /* XXX U-BOOT XXX */ #if 0 @@ -223,7 +221,7 @@ static void nand_write_byte(struct mtd_info *mtd, u_char byte) * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip * @mtd: MTD device structure * - * Default read function for 16bit buswith with + * Default read function for 16bit buswith with * endianess conversion */ static u_char nand_read_byte16(struct mtd_info *mtd) @@ -250,7 +248,7 @@ static void nand_write_byte16(struct mtd_info *mtd, u_char byte) * nand_read_word - [DEFAULT] read one word from the chip * @mtd: MTD device structure * - * Default read function for 16bit buswith without + * Default read function for 16bit buswith without * endianess conversion */ static u16 nand_read_word(struct mtd_info *mtd) @@ -264,7 +262,7 @@ static u16 nand_read_word(struct mtd_info *mtd) * @mtd: MTD device structure * @word: data word to write * - * Default write function for 16bit buswith without + * Default write function for 16bit buswith without * endianess conversion */ static void nand_write_word(struct mtd_info *mtd, u16 word) @@ -285,7 +283,7 @@ static void nand_select_chip(struct mtd_info *mtd, int chip) struct nand_chip *this = mtd->priv; switch(chip) { case -1: - this->hwcontrol(mtd, NAND_CTL_CLRNCE); + this->hwcontrol(mtd, NAND_CTL_CLRNCE); break; case 0: this->hwcontrol(mtd, NAND_CTL_SETNCE); @@ -314,7 +312,7 @@ static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len) } /** - * nand_read_buf - [DEFAULT] read chip data into buffer + * nand_read_buf - [DEFAULT] read chip data into buffer * @mtd: MTD device structure * @buf: buffer to store date * @len: number of bytes to read @@ -331,7 +329,7 @@ static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) } /** - * nand_verify_buf - [DEFAULT] Verify chip data against buffer + * nand_verify_buf - [DEFAULT] Verify chip data against buffer * @mtd: MTD device structure * @buf: buffer containing the data to compare * @len: number of bytes to compare @@ -364,14 +362,14 @@ static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len) struct nand_chip *this = mtd->priv; u16 *p = (u16 *) buf; len >>= 1; - + for (i=0; i<len; i++) writew(p[i], this->IO_ADDR_W); - + } /** - * nand_read_buf16 - [DEFAULT] read chip data into buffer + * nand_read_buf16 - [DEFAULT] read chip data into buffer * @mtd: MTD device structure * @buf: buffer to store date * @len: number of bytes to read @@ -390,7 +388,7 @@ static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len) } /** - * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer + * nand_verify_buf16 - [DEFAULT] Verify chip data against buffer * @mtd: MTD device structure * @buf: buffer containing the data to compare * @len: number of bytes to compare @@ -417,7 +415,7 @@ static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len) * @ofs: offset from device start * @getchip: 0, if the chip is already selected * - * Check, if the block is bad. + * Check, if the block is bad. */ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) { @@ -434,8 +432,8 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) /* Select the NAND device */ this->select_chip(mtd, chipnr); - } else - page = (int) ofs; + } else + page = (int) ofs; if (this->options & NAND_BUSWIDTH_16) { this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page & this->pagemask); @@ -449,12 +447,12 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip) if (this->read_byte(mtd) != 0xff) res = 1; } - + if (getchip) { /* Deselect and wake up anyone waiting on the device */ nand_release_device(mtd); - } - + } + return res; } @@ -472,7 +470,7 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) u_char buf[2] = {0, 0}; size_t retlen; int block; - + /* Get block number */ block = ((int) ofs) >> this->bbt_erase_shift; this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); @@ -480,25 +478,25 @@ static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) /* Do we have a flash based bad block table ? */ if (this->options & NAND_USE_FLASH_BBT) return nand_update_bbt (mtd, ofs); - + /* We write two bytes, so we dont have to mess with 16 bit access */ ofs += mtd->oobsize + (this->badblockpos & ~0x01); return nand_write_oob (mtd, ofs , 2, &retlen, buf); } -/** +/** * nand_check_wp - [GENERIC] check if the chip is write protected * @mtd: MTD device structure - * Check, if the device is write protected + * Check, if the device is write protected * - * The function expects, that the device is already selected + * The function expects, that the device is already selected */ static int nand_check_wp (struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; /* Check the WP bit */ this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); - return (this->read_byte(mtd) & 0x80) ? 0 : 1; + return (this->read_byte(mtd) & 0x80) ? 0 : 1; } /** @@ -514,10 +512,10 @@ static int nand_check_wp (struct mtd_info *mtd) static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) { struct nand_chip *this = mtd->priv; - + if (!this->bbt) return this->block_bad(mtd, ofs, getchip); - + /* Return info from the table */ return nand_isbad_bbt (mtd, ofs, allowbbt); } @@ -582,13 +580,13 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in /* Latch in address */ this->hwcontrol(mtd, NAND_CTL_CLRALE); } - - /* - * program and erase have their own busy handlers + + /* + * program and erase have their own busy handlers * status and sequential in needs no delay */ switch (command) { - + case NAND_CMD_PAGEPROG: case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: @@ -597,7 +595,7 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in return; case NAND_CMD_RESET: - if (this->dev_ready) + if (this->dev_ready) break; udelay(this->chip_delay); this->hwcontrol(mtd, NAND_CTL_SETCLE); @@ -606,18 +604,18 @@ static void nand_command (struct mtd_info *mtd, unsigned command, int column, in while ( !(this->read_byte(mtd) & 0x40)); return; - /* This applies to read commands */ + /* This applies to read commands */ default: - /* + /* * If we don't have access to the busy pin, we apply the given * command delay */ if (!this->dev_ready) { udelay (this->chip_delay); return; - } + } } - + /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ ndelay (100); @@ -646,8 +644,8 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, column += mtd->oobblock; command = NAND_CMD_READ0; } - - + + /* Begin command latch cycle */ this->hwcontrol(mtd, NAND_CTL_SETCLE); /* Write out the command to the device. */ @@ -665,7 +663,7 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, column >>= 1; this->write_byte(mtd, column & 0xff); this->write_byte(mtd, column >> 8); - } + } if (page_addr != -1) { this->write_byte(mtd, (unsigned char) (page_addr & 0xff)); this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff)); @@ -676,13 +674,13 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, /* Latch in address */ this->hwcontrol(mtd, NAND_CTL_CLRALE); } - - /* - * program and erase have their own busy handlers + + /* + * program and erase have their own busy handlers * status and sequential in needs no delay */ switch (command) { - + case NAND_CMD_CACHEDPROG: case NAND_CMD_PAGEPROG: case NAND_CMD_ERASE1: @@ -693,7 +691,7 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, case NAND_CMD_RESET: - if (this->dev_ready) + if (this->dev_ready) break; udelay(this->chip_delay); this->hwcontrol(mtd, NAND_CTL_SETCLE); @@ -710,19 +708,19 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, /* End command latch cycle */ this->hwcontrol(mtd, NAND_CTL_CLRCLE); /* Fall through into ready check */ - - /* This applies to read commands */ + + /* This applies to read commands */ default: - /* + /* * If we don't have access to the busy pin, we apply the given * command delay */ if (!this->dev_ready) { udelay (this->chip_delay); return; - } + } } - + /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ ndelay (100); @@ -734,7 +732,7 @@ static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, * nand_get_device - [GENERIC] Get chip for selected access * @this: the nand chip descriptor * @mtd: MTD device structure - * @new_state: the state which is requested + * @new_state: the state which is requested * * Get the device and lock it for exclusive access */ @@ -746,8 +744,8 @@ static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int n DECLARE_WAITQUEUE (wait, current); - /* - * Grab the lock and see if the device is available + /* + * Grab the lock and see if the device is available */ retry: /* Hardware controller shared among independend devices */ @@ -759,7 +757,7 @@ retry: this->controller->active = this; spin_unlock (&this->controller->lock); } - + if (active == this) { spin_lock (&this->chip_lock); if (this->state == FL_READY) { @@ -767,7 +765,7 @@ retry: spin_unlock (&this->chip_lock); return; } - } + } set_current_state (TASK_UNINTERRUPTIBLE); add_wait_queue (&active->wq, &wait); spin_unlock (&active->chip_lock); @@ -786,7 +784,7 @@ static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int n * @state: state to select the max. timeout value * * Wait for command done. This applies to erase and program only - * Erase can take up to 400ms and program up to 20ms according to + * Erase can take up to 400ms and program up to 20ms according to * general NAND and SmartMedia specs * */ @@ -796,7 +794,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) { unsigned long timeo = jiffies; int status; - + if (state == FL_ERASING) timeo += (HZ * 400) / 1000; else @@ -808,17 +806,17 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1); - else + else this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1); - while (time_before(jiffies, timeo)) { + while (time_before(jiffies, timeo)) { /* Check, if we were interrupted */ if (this->state != state) return 0; if (this->dev_ready) { if (this->dev_ready(mtd)) - break; + break; } else { if (this->read_byte(mtd) & NAND_STATUS_READY) break; @@ -853,7 +851,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) * * Cached programming is not supported yet. */ -static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, +static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, u_char *oob_buf, struct nand_oobinfo *oobsel, int cached) { int i, status; @@ -862,10 +860,10 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa int *oob_config = oobsel->eccpos; int datidx = 0, eccidx = 0, eccsteps = this->eccsteps; int eccbytes = 0; - + /* FIXME: Enable cached programming */ cached = 0; - + /* Send command to begin auto page programming */ this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page); @@ -876,7 +874,7 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n"); this->write_buf(mtd, this->data_poi, mtd->oobblock); break; - + /* Software ecc 3/256, write all */ case NAND_ECC_SOFT: for (; eccsteps; eccsteps--) { @@ -905,11 +903,11 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa } break; } - + /* Write out OOB data */ if (this->options & NAND_HWECC_SYNDROME) this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes); - else + else this->write_buf(mtd, oob_buf, mtd->oobsize); /* Send command to actually program the data */ @@ -926,9 +924,9 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa } else { /* FIXME: Implement cached programming ! */ /* wait until cache is ready*/ - // status = this->waitfunc (mtd, this, FL_CACHEDRPG); + /* status = this->waitfunc (mtd, this, FL_CACHEDRPG); */ } - return 0; + return 0; } #ifdef CONFIG_MTD_NAND_VERIFY_WRITE @@ -944,19 +942,19 @@ static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int pa * @oobmode: 1 = full buffer verify, 0 = ecc only * * The NAND device assumes that it is always writing to a cleanly erased page. - * Hence, it performs its internal write verification only on bits that + * Hence, it performs its internal write verification only on bits that * transitioned from 1 to 0. The device does NOT verify the whole page on a - * byte by byte basis. It is possible that the page was not completely erased - * or the page is becoming unusable due to wear. The read with ECC would catch - * the error later when the ECC page check fails, but we would rather catch + * byte by byte basis. It is possible that the page was not completely erased + * or the page is becoming unusable due to wear. The read with ECC would catch + * the error later when the ECC page check fails, but we would rather catch * it early in the page write stage. Better to write no data than invalid data. */ -static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, +static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int page, int numpages, u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode) { int i, j, datidx = 0, oobofs = 0, res = -EIO; int eccsteps = this->eccsteps; - int hweccbytes; + int hweccbytes; u_char oobdata[64]; hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0; @@ -996,7 +994,7 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int if (oobsel->useecc != MTD_NANDECC_OFF && !hweccbytes) { int ecccnt = oobsel->eccbytes; - + for (i = 0; i < ecccnt; i++) { int idx = oobsel->eccpos[i]; if (oobdata[idx] != oob_buf[oobofs + idx] ) { @@ -1006,38 +1004,38 @@ static int nand_verify_pages (struct mtd_info *mtd, struct nand_chip *this, int goto out; } } - } + } } oobofs += mtd->oobsize - hweccbytes * eccsteps; page++; numpages--; - /* Apply delay or wait for ready/busy pin + /* Apply delay or wait for ready/busy pin * Do this before the AUTOINCR check, so no problems * arise if a chip which does auto increment * is marked as NOAUTOINCR by the board driver. * Do this also before returning, so the chip is * ready for the next command. */ - if (!this->dev_ready) + if (!this->dev_ready) udelay (this->chip_delay); else - while (!this->dev_ready(mtd)); + while (!this->dev_ready(mtd)); /* All done, return happy */ if (!numpages) return 0; - - - /* Check, if the chip supports auto page increment */ + + + /* Check, if the chip supports auto page increment */ if (!NAND_CANAUTOINCR(this)) this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); } - /* + /* * Terminate the read command. We come here in case of an error * So we must issue a reset command. */ -out: +out: this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1); return res; } @@ -1056,7 +1054,7 @@ out: static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf) { return nand_read_ecc (mtd, from, len, retlen, buf, NULL, NULL); -} +} /** @@ -1080,7 +1078,7 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, u_char *data_poi, *oob_data = oob_buf; u_char ecc_calc[32]; u_char ecc_code[32]; - int eccmode, eccsteps; + int eccmode, eccsteps; int *oob_config, datidx; int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1; int eccbytes; @@ -1103,11 +1101,11 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, /* use userspace supplied oobinfo, if zero */ if (oobsel == NULL) oobsel = &mtd->oobinfo; - + /* Autoplace of oob data ? Use the default placement scheme */ if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) oobsel = this->autooob; - + eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE; oob_config = oobsel->eccpos; @@ -1125,28 +1123,28 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, end = mtd->oobblock; ecc = this->eccsize; eccbytes = this->eccbytes; - + if ((eccmode == NAND_ECC_NONE) || (this->options & NAND_HWECC_SYNDROME)) compareecc = 0; oobreadlen = mtd->oobsize; - if (this->options & NAND_HWECC_SYNDROME) + if (this->options & NAND_HWECC_SYNDROME) oobreadlen -= oobsel->eccbytes; /* Loop until all data read */ while (read < len) { - + int aligned = (!col && (len - read) >= end); - /* + /* * If the read is not page aligned, we have to read into data buffer * due to ecc, else we read into return buffer direct */ if (aligned) data_poi = &buf[read]; - else + else data_poi = this->data_buf; - - /* Check, if we have this page in the buffer + + /* Check, if we have this page in the buffer * * FIXME: Make it work when we must provide oob data too, * check the usage of data_buf oob field @@ -1162,7 +1160,7 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, if (sndcmd) { this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page); sndcmd = 0; - } + } /* get oob area, if we have no oob buffer from fs-driver */ if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE || @@ -1170,7 +1168,7 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, oob_data = &this->data_buf[end]; eccsteps = this->eccsteps; - + switch (eccmode) { case NAND_ECC_NONE: { /* No ECC, Read in a page */ /* XXX U-BOOT XXX */ @@ -1186,12 +1184,12 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, this->read_buf(mtd, data_poi, end); break; } - + case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */ this->read_buf(mtd, data_poi, end); - for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc) + for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=3, datidx += ecc) this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); - break; + break; default: for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) { @@ -1209,15 +1207,15 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, * generator for an error, reads back the syndrome and * does the error correction on the fly */ if (this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]) == -1) { - DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " + DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x on chip %d\n", page, chipnr); ecc_failed++; } } else { this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]); - } + } } - break; + break; } /* read oobdata */ @@ -1225,8 +1223,8 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, /* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */ if (!compareecc) - goto readoob; - + goto readoob; + /* Pick the ECC bytes out of the oob data */ for (j = 0; j < oobsel->eccbytes; j++) ecc_code[j] = oob_data[oob_config[j]]; @@ -1234,24 +1232,24 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, /* correct data, if neccecary */ for (i = 0, j = 0, datidx = 0; i < this->eccsteps; i++, datidx += ecc) { ecc_status = this->correct_data(mtd, &data_poi[datidx], &ecc_code[j], &ecc_calc[j]); - + /* Get next chunk of ecc bytes */ j += eccbytes; - - /* Check, if we have a fs supplied oob-buffer, + + /* Check, if we have a fs supplied oob-buffer, * This is the legacy mode. Used by YAFFS1 * Should go away some day */ - if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) { + if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) { int *p = (int *)(&oob_data[mtd->oobsize]); p[i] = ecc_status; } - - if (ecc_status == -1) { + + if (ecc_status == -1) { DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page); ecc_failed++; } - } + } readoob: /* check, if we have a fs supplied oob-buffer */ @@ -1278,25 +1276,25 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, } readdata: /* Partial page read, transfer data into fs buffer */ - if (!aligned) { + if (!aligned) { for (j = col; j < end && read < len; j++) buf[read++] = data_poi[j]; - this->pagebuf = realpage; - } else + this->pagebuf = realpage; + } else read += mtd->oobblock; - /* Apply delay or wait for ready/busy pin + /* Apply delay or wait for ready/busy pin * Do this before the AUTOINCR check, so no problems * arise if a chip which does auto increment * is marked as NOAUTOINCR by the board driver. */ - if (!this->dev_ready) + if (!this->dev_ready) udelay (this->chip_delay); else - while (!this->dev_ready(mtd)); - + while (!this->dev_ready(mtd)); + if (read == len) - break; + break; /* For subsequent reads align to page boundary. */ col = 0; @@ -1310,11 +1308,11 @@ static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, this->select_chip(mtd, -1); this->select_chip(mtd, chipnr); } - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. - */ + /* Check, if the chip supports auto page increment + * or if we have hit a block boundary. + */ if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) - sndcmd = 1; + sndcmd = 1; } /* Deselect and wake up anyone waiting on the device */ @@ -1350,7 +1348,7 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t /* Shift to get page */ page = (int)(from >> this->page_shift); chipnr = (int)(from >> this->chip_shift); - + /* Mask to get column */ col = from & (mtd->oobsize - 1); @@ -1372,7 +1370,7 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t /* Send the read command */ this->cmdfunc (mtd, NAND_CMD_READOOB, col, page & this->pagemask); - /* + /* * Read the data, if we read more than one page * oob data, let the device transfer the data ! */ @@ -1382,16 +1380,16 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t thislen = min_t(int, thislen, len); this->read_buf(mtd, &buf[i], thislen); i += thislen; - - /* Apply delay or wait for ready/busy pin + + /* Apply delay or wait for ready/busy pin * Do this before the AUTOINCR check, so no problems * arise if a chip which does auto increment * is marked as NOAUTOINCR by the board driver. */ - if (!this->dev_ready) + if (!this->dev_ready) udelay (this->chip_delay); else - while (!this->dev_ready(mtd)); + while (!this->dev_ready(mtd)); /* Read more ? */ if (i < len) { @@ -1404,13 +1402,13 @@ static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t this->select_chip(mtd, -1); this->select_chip(mtd, chipnr); } - - /* Check, if the chip supports auto page increment - * or if we have hit a block boundary. - */ + + /* Check, if the chip supports auto page increment + * or if we have hit a block boundary. + */ if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) { /* For subsequent page reads set offset to 0 */ - this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask); + this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask); } } } @@ -1453,27 +1451,27 @@ int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, nand_get_device (this, mtd , FL_READING); this->select_chip (mtd, chip); - + /* Add requested oob length */ len += ooblen; - + while (len) { if (sndcmd) this->cmdfunc (mtd, NAND_CMD_READ0, 0, page & this->pagemask); - sndcmd = 0; + sndcmd = 0; this->read_buf (mtd, &buf[cnt], pagesize); len -= pagesize; cnt += pagesize; page++; - - if (!this->dev_ready) + + if (!this->dev_ready) udelay (this->chip_delay); else - while (!this->dev_ready(mtd)); - - /* Check, if the chip supports auto page increment */ + while (!this->dev_ready(mtd)); + + /* Check, if the chip supports auto page increment */ if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) sndcmd = 1; } @@ -1484,8 +1482,8 @@ int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, } -/** - * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer +/** + * nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer * @mtd: MTD device structure * @fsbuf: buffer given by fs driver * @oobsel: out of band selection structre @@ -1514,20 +1512,20 @@ static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct int i, len, ofs; /* Zero copy fs supplied buffer */ - if (fsbuf && !autoplace) + if (fsbuf && !autoplace) return fsbuf; /* Check, if the buffer must be filled with ff again */ - if (this->oobdirty) { - memset (this->oob_buf, 0xff, + if (this->oobdirty) { + memset (this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift)); this->oobdirty = 0; - } - + } + /* If we have no autoplacement or no fs buffer use the internal one */ if (!autoplace || !fsbuf) return this->oob_buf; - + /* Walk through the pages and place the data */ this->oobdirty = 1; ofs = 0; @@ -1561,7 +1559,7 @@ static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * ret { return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL)); } - + /** * nand_write_ecc - [MTD Interface] NAND write with ECC * @mtd: MTD device structure @@ -1594,7 +1592,7 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, return -EINVAL; } - /* reject writes, which are not page aligned */ + /* reject writes, which are not page aligned */ if (NOTALIGNED (to) || NOTALIGNED(len)) { printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); return -EINVAL; @@ -1613,14 +1611,14 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, goto out; /* if oobsel is NULL, use chip defaults */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; - + if (oobsel == NULL) + oobsel = &mtd->oobinfo; + /* Autoplace of oob data ? Use the default placement scheme */ if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { oobsel = this->autooob; autoplace = 1; - } + } if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) autoplace = 1; @@ -1628,9 +1626,9 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, totalpages = len >> this->page_shift; page = (int) (to >> this->page_shift); /* Invalidate the page cache, if we write to the cached page */ - if (page <= this->pagebuf && this->pagebuf < (page + totalpages)) + if (page <= this->pagebuf && this->pagebuf < (page + totalpages)) this->pagebuf = -1; - + /* Set it relative to chip */ page &= this->pagemask; startpage = page; @@ -1652,14 +1650,14 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, if (ret) { DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: write_page failed %d\n", ret); goto out; - } + } /* Next oob page */ oob += mtd->oobsize; /* Update written bytes count */ written += mtd->oobblock; - if (written == len) + if (written == len) goto cmp; - + /* Increment page address */ page++; @@ -1670,13 +1668,13 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, if (!(page & (ppblock - 1))){ int ofs; this->data_poi = bufstart; - ret = nand_verify_pages (mtd, this, startpage, + ret = nand_verify_pages (mtd, this, startpage, page - startpage, oobbuf, oobsel, chipnr, (eccbuf != NULL)); if (ret) { DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); goto out; - } + } *retlen = written; ofs = autoplace ? mtd->oobavail : mtd->oobsize; @@ -1686,7 +1684,7 @@ static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len, numpages = min (totalpages, ppblock); page &= this->pagemask; startpage = page; - oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, + oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages); /* Check, if we cross a chip boundary */ if (!page) { @@ -1703,7 +1701,7 @@ cmp: oobbuf, oobsel, chipnr, (eccbuf != NULL)); if (!ret) *retlen = written; - else + else DEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: verify_pages failed %d\n", ret); out: @@ -1763,7 +1761,7 @@ static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * /* Check, if it is write protected */ if (nand_check_wp(mtd)) goto out; - + /* Invalidate the page cache, if we write to the cached page */ if (page == this->pagebuf) this->pagebuf = -1; @@ -1827,10 +1825,10 @@ out: * * NAND write with kvec. This just calls the ecc function */ -static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, +static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t * retlen) { - return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL)); + return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL)); } /** @@ -1845,7 +1843,7 @@ static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs, unsigned * * NAND write with iovec with ecc */ -static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, +static int nand_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) { int i, page, len, total_len, ret = -EIO, written = 0, chipnr; @@ -1871,7 +1869,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig return -EINVAL; } - /* reject writes, which are not page aligned */ + /* reject writes, which are not page aligned */ if (NOTALIGNED (to) || NOTALIGNED(total_len)) { printk (KERN_NOTICE "nand_write_ecc: Attempt to write not page aligned data\n"); return -EINVAL; @@ -1890,21 +1888,21 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig goto out; /* if oobsel is NULL, use chip defaults */ - if (oobsel == NULL) - oobsel = &mtd->oobinfo; + if (oobsel == NULL) + oobsel = &mtd->oobinfo; /* Autoplace of oob data ? Use the default placement scheme */ if (oobsel->useecc == MTD_NANDECC_AUTOPLACE) { oobsel = this->autooob; autoplace = 1; - } + } if (oobsel->useecc == MTD_NANDECC_AUTOPL_USR) autoplace = 1; /* Setup start page */ page = (int) (to >> this->page_shift); /* Invalidate the page cache, if we write to the cached page */ - if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift)) + if (page <= this->pagebuf && this->pagebuf < ((to + total_len) >> this->page_shift)) this->pagebuf = -1; startpage = page & this->pagemask; @@ -1928,10 +1926,10 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig oob = 0; for (i = 1; i <= numpages; i++) { /* Write one page. If this is the last page to write - * then use the real pageprogram command, else select + * then use the real pageprogram command, else select * cached programming if supported by the chip. */ - ret = nand_write_page (mtd, this, page & this->pagemask, + ret = nand_write_page (mtd, this, page & this->pagemask, &oobbuf[oob], oobsel, i != numpages); if (ret) goto out; @@ -1947,12 +1945,12 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig count--; } } else { - /* We must use the internal buffer, read data out of each + /* We must use the internal buffer, read data out of each * tuple until we have a full page to write */ int cnt = 0; while (cnt < mtd->oobblock) { - if (vecs->iov_base != NULL && vecs->iov_len) + if (vecs->iov_base != NULL && vecs->iov_len) this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++]; /* Check, if we have to switch to the next tuple */ if (len >= (int) vecs->iov_len) { @@ -1961,10 +1959,10 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig count--; } } - this->pagebuf = page; - this->data_poi = this->data_buf; + this->pagebuf = page; + this->data_poi = this->data_buf; bufstart = this->data_poi; - numpages = 1; + numpages = 1; oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages); ret = nand_write_page (mtd, this, page & this->pagemask, oobbuf, oobsel, 0); @@ -1977,7 +1975,7 @@ static int nand_writev_ecc (struct mtd_info *mtd, const struct kvec *vecs, unsig ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0); if (ret) goto out; - + written += mtd->oobblock * numpages; /* All done ? */ if (!count) @@ -2046,7 +2044,7 @@ static int nand_erase (struct mtd_info *mtd, struct erase_info *instr) { return nand_erase_nand (mtd, instr, 0); } - + /** * nand_erase_intern - [NAND Interface] erase block(s) * @mtd: MTD device structure @@ -2116,14 +2114,14 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb instr->state = MTD_ERASE_FAILED; goto erase_exit; } - - /* Invalidate the page cache, if we erase the block which contains + + /* Invalidate the page cache, if we erase the block which contains the current cached page */ if (page <= this->pagebuf && this->pagebuf < (page + pages_per_block)) this->pagebuf = -1; this->erase_cmd (mtd, page & this->pagemask); - + status = this->waitfunc (mtd, this, FL_ERASING); /* See if block erase succeeded */ @@ -2133,7 +2131,7 @@ int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbb instr->fail_addr = (page << this->page_shift); goto erase_exit; } - + /* Increment page address and decrement length */ len -= (1 << this->phys_erase_shift); page += pages_per_block; @@ -2188,9 +2186,9 @@ static void nand_sync (struct mtd_info *mtd) static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs) { /* Check for invalid offset */ - if (ofs > mtd->size) + if (ofs > mtd->size) return -EINVAL; - + return nand_block_checkbad (mtd, ofs, 1, 0); } @@ -2204,12 +2202,12 @@ static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs) struct nand_chip *this = mtd->priv; int ret; - if ((ret = nand_block_isbad(mtd, ofs))) { - /* If it was bad already, return success and do nothing. */ + if ((ret = nand_block_isbad(mtd, ofs))) { + /* If it was bad already, return success and do nothing. */ if (ret > 0) return 0; - return ret; - } + return ret; + } return this->block_markbad(mtd, ofs); } @@ -2281,13 +2279,13 @@ int nand_scan (struct mtd_info *mtd, int maxchips) /* Print and store flash device information */ for (i = 0; nand_flash_ids[i].name != NULL; i++) { - - if (nand_dev_id != nand_flash_ids[i].id) + + if (nand_dev_id != nand_flash_ids[i].id) continue; if (!mtd->name) mtd->name = nand_flash_ids[i].name; this->chipsize = nand_flash_ids[i].chipsize << 20; - + /* New devices have all the information in additional id bytes */ if (!nand_flash_ids[i].pagesize) { int extid; @@ -2306,7 +2304,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips) extid >>= 2; /* Get buswidth information */ busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0; - + } else { /* Old devices have this data hardcoded in the * device id table */ @@ -2320,23 +2318,23 @@ int nand_scan (struct mtd_info *mtd, int maxchips) * this correct ! */ if (busw != (this->options & NAND_BUSWIDTH_16)) { printk (KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, nand_manuf_ids[i].name , mtd->name); - printk (KERN_WARNING - "NAND bus width %d instead %d bit\n", + printk (KERN_WARNING + "NAND bus width %d instead %d bit\n", (this->options & NAND_BUSWIDTH_16) ? 16 : 8, busw ? 16 : 8); this->select_chip(mtd, -1); - return 1; + return 1; } - - /* Calculate the address shift from the page size */ + + /* Calculate the address shift from the page size */ this->page_shift = ffs(mtd->oobblock) - 1; this->bbt_erase_shift = this->phys_erase_shift = ffs(mtd->erasesize) - 1; this->chip_shift = ffs(this->chipsize) - 1; /* Set the bad block position */ - this->badblockpos = mtd->oobblock > 512 ? + this->badblockpos = mtd->oobblock > 512 ? NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS; /* Get chip options, preserve non chip based options */ @@ -2346,10 +2344,10 @@ int nand_scan (struct mtd_info *mtd, int maxchips) this->options |= NAND_NO_AUTOINCR; /* Check if this is a not a samsung device. Do not clear the options * for chips which are not having an extended id. - */ + */ if (nand_maf_id != NAND_MFR_SAMSUNG && !nand_flash_ids[i].pagesize) this->options &= ~NAND_SAMSUNG_LP_OPTIONS; - + /* Check for AND chips with 4 page planes */ if (this->options & NAND_4PAGE_ARRAY) this->erase_cmd = multi_erase_cmd; @@ -2359,14 +2357,14 @@ int nand_scan (struct mtd_info *mtd, int maxchips) /* Do not replace user supplied command function ! */ if (mtd->oobblock > 512 && this->cmdfunc == nand_command) this->cmdfunc = nand_command_lp; - + /* Try to identify manufacturer */ for (j = 0; nand_manuf_ids[j].id != 0x0; j++) { if (nand_manuf_ids[j].id == nand_maf_id) break; } printk (KERN_INFO "NAND device: Manufacturer ID:" - " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, + " 0x%02x, Chip ID: 0x%02x (%s %s)\n", nand_maf_id, nand_dev_id, nand_manuf_ids[j].name , nand_flash_ids[i].name); break; } @@ -2390,7 +2388,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips) } if (i > 1) printk(KERN_INFO "%d NAND chips detected\n", i); - + /* Allocate buffers, if neccecary */ if (!this->oob_buf) { size_t len; @@ -2402,7 +2400,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips) } this->options |= NAND_OOBBUF_ALLOC; } - + if (!this->data_buf) { size_t len; len = mtd->oobblock + mtd->oobsize; @@ -2429,7 +2427,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips) if (!this->autooob) { /* Select the appropriate default oob placement scheme for * placement agnostic filesystems */ - switch (mtd->oobsize) { + switch (mtd->oobsize) { case 8: this->autooob = &nand_oob_8; break; @@ -2445,7 +2443,7 @@ int nand_scan (struct mtd_info *mtd, int maxchips) /* BUG(); */ } } - + /* The number of bytes available for the filesystem to place fs dependend * oob data */ if (this->options & NAND_BUSWIDTH_16) { @@ -2455,12 +2453,12 @@ int nand_scan (struct mtd_info *mtd, int maxchips) } else mtd->oobavail = mtd->oobsize - (this->autooob->eccbytes + 1); - /* + /* * check ECC mode, default to software * if 3byte/512byte hardware ECC is selected and we have 256 byte pagesize - * fallback to software ECC + * fallback to software ECC */ - this->eccsize = 256; /* set default eccsize */ + this->eccsize = 256; /* set default eccsize */ this->eccbytes = 3; switch (this->eccmode) { @@ -2475,27 +2473,27 @@ int nand_scan (struct mtd_info *mtd, int maxchips) this->eccsize = 2048; break; - case NAND_ECC_HW3_512: - case NAND_ECC_HW6_512: - case NAND_ECC_HW8_512: + case NAND_ECC_HW3_512: + case NAND_ECC_HW6_512: + case NAND_ECC_HW8_512: if (mtd->oobblock == 256) { printk (KERN_WARNING "512 byte HW ECC not possible on 256 Byte pagesize, fallback to SW ECC \n"); this->eccmode = NAND_ECC_SOFT; this->calculate_ecc = nand_calculate_ecc; this->correct_data = nand_correct_data; - } else + } else this->eccsize = 512; /* set eccsize to 512 */ break; - + case NAND_ECC_HW3_256: break; - - case NAND_ECC_NONE: + + case NAND_ECC_NONE: printk (KERN_WARNING "NAND_ECC_NONE selected by board driver. This is not recommended !!\n"); this->eccmode = NAND_ECC_NONE; break; - case NAND_ECC_SOFT: + case NAND_ECC_SOFT: this->calculate_ecc = nand_calculate_ecc; this->correct_data = nand_correct_data; break; @@ -2503,28 +2501,28 @@ int nand_scan (struct mtd_info *mtd, int maxchips) default: printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode); /* BUG(); */ - } + } - /* Check hardware ecc function availability and adjust number of ecc bytes per + /* Check hardware ecc function availability and adjust number of ecc bytes per * calculation step */ switch (this->eccmode) { case NAND_ECC_HW12_2048: this->eccbytes += 4; - case NAND_ECC_HW8_512: + case NAND_ECC_HW8_512: this->eccbytes += 2; - case NAND_ECC_HW6_512: + case NAND_ECC_HW6_512: this->eccbytes += 3; - case NAND_ECC_HW3_512: + case NAND_ECC_HW3_512: case NAND_ECC_HW3_256: if (this->calculate_ecc && this->correct_data && this->enable_hwecc) break; printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n"); /* BUG(); */ } - + mtd->eccsize = this->eccsize; - + /* Set the number of read / write steps for one page to ensure ECC generation */ switch (this->eccmode) { case NAND_ECC_HW12_2048: @@ -2536,17 +2534,17 @@ int nand_scan (struct mtd_info *mtd, int maxchips) this->eccsteps = mtd->oobblock / 512; break; case NAND_ECC_HW3_256: - case NAND_ECC_SOFT: + case NAND_ECC_SOFT: this->eccsteps = mtd->oobblock / 256; break; - - case NAND_ECC_NONE: + + case NAND_ECC_NONE: this->eccsteps = 1; break; } /* XXX U-BOOT XXX */ -#if 0 +#if 0 /* Initialize state, waitqueue and spinlock */ this->state = FL_READY; init_waitqueue_head (&this->wq); @@ -2600,9 +2598,9 @@ int nand_scan (struct mtd_info *mtd, int maxchips) } /** - * nand_release - [NAND Interface] Free resources held by the NAND device + * nand_release - [NAND Interface] Free resources held by the NAND device * @mtd: MTD device structure -*/ + */ void nand_release (struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; diff --git a/drivers/nand/nand_bbt.c b/drivers/nand/nand_bbt.c index 6f7e05b7eb..dfa88a3af6 100644 --- a/drivers/nand/nand_bbt.c +++ b/drivers/nand/nand_bbt.c @@ -3,7 +3,7 @@ * * Overview: * Bad block table support for the NAND driver - * + * * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de) * * $Id: nand_bbt.c,v 1.28 2004/11/13 10:19:09 gleixner Exp $ @@ -14,23 +14,23 @@ * * Description: * - * When nand_scan_bbt is called, then it tries to find the bad block table - * depending on the options in the bbt descriptor(s). If a bbt is found - * then the contents are read and the memory based bbt is created. If a + * When nand_scan_bbt is called, then it tries to find the bad block table + * depending on the options in the bbt descriptor(s). If a bbt is found + * then the contents are read and the memory based bbt is created. If a * mirrored bbt is selected then the mirror is searched too and the - * versions are compared. If the mirror has a greater version number + * versions are compared. If the mirror has a greater version number * than the mirror bbt is used to build the memory based bbt. * If the tables are not versioned, then we "or" the bad block information. - * If one of the bbt's is out of date or does not exist it is (re)created. - * If no bbt exists at all then the device is scanned for factory marked - * good / bad blocks and the bad block tables are created. + * If one of the bbt's is out of date or does not exist it is (re)created. + * If no bbt exists at all then the device is scanned for factory marked + * good / bad blocks and the bad block tables are created. * - * For manufacturer created bbts like the one found on M-SYS DOC devices + * For manufacturer created bbts like the one found on M-SYS DOC devices * the bbt is searched and read but never created * - * The autogenerated bad block table is located in the last good blocks - * of the device. The table is mirrored, so it can be updated eventually. - * The table is marked in the oob area with an ident pattern and a version + * The autogenerated bad block table is located in the last good blocks + * of the device. The table is mirrored, so it can be updated eventually. + * The table is marked in the oob area with an ident pattern and a version * number which indicates which of both tables is more up to date. * * The table uses 2 bits per block @@ -43,13 +43,13 @@ * 01b: block is marked bad due to wear * 10b: block is reserved (to protect the bbt area) * 11b: block is factory marked bad - * + * * Multichip devices like DOC store the bad block info per floor. * * Following assumptions are made: * - bbts start at a page boundary, if autolocated on a block boundary * - the space neccecary for a bbt in FLASH does not exceed a block boundary - * + * */ #include <common.h> @@ -63,7 +63,7 @@ #include <asm/errno.h> -/** +/** * check_pattern - [GENERIC] check if a pattern is in the buffer * @buf: the buffer to search * @len: the length of buffer to search @@ -87,9 +87,9 @@ static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_des if (p[i] != 0xff) return -1; } - } + } p += end; - + /* Compare the pattern */ for (i = 0; i < td->len; i++) { if (p[i] != td->pattern[i]) @@ -120,7 +120,7 @@ static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_des * Read the bad block table starting from page. * */ -static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, +static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, int bits, int offs, int reserved_block_code) { int res, i, j, act = 0; @@ -131,7 +131,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, totlen = (num * bits) >> 3; from = ((loff_t)page) << this->page_shift; - + while (totlen) { len = min (totlen, (size_t) (1 << this->bbt_erase_shift)); res = mtd->read_ecc (mtd, from, len, &retlen, buf, NULL, this->autooob); @@ -141,7 +141,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, return res; } printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n"); - } + } /* Analyse data */ for (i = 0; i < len; i++) { @@ -161,12 +161,12 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, * message to MTD_DEBUG_LEVEL0 */ printk (KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n", ((offs << 2) + (act >> 1)) << this->bbt_erase_shift); - /* Factory marked bad or worn out ? */ + /* Factory marked bad or worn out ? */ if (tmp == 0) this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06); else this->bbt[offs + (act >> 3)] |= 0x1 << (act & 0x06); - } + } } totlen -= len; from += len; @@ -178,7 +178,7 @@ static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num, * read_abs_bbt - [GENERIC] Read the bad block table starting at a given page * @mtd: MTD device structure * @buf: temporary buffer - * @td: descriptor for the bad block table + * @td: descriptor for the bad block table * @chip: read the table for a specific chip, -1 read all chips. * Applies only if NAND_BBT_PERCHIP option is set * @@ -213,7 +213,7 @@ static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des * read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page * @mtd: MTD device structure * @buf: temporary buffer - * @td: descriptor for the bad block table + * @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 @@ -225,16 +225,16 @@ static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_de { struct nand_chip *this = mtd->priv; - /* Read the primary version, if available */ + /* Read the primary version, if available */ if (td->options & NAND_BBT_VERSION) { - nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); + nand_read_raw (mtd, buf, td->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); td->version[0] = buf[mtd->oobblock + td->veroffs]; printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", td->pages[0], td->version[0]); } - /* Read the mirror version, if available */ + /* Read the mirror version, if available */ if (md && (md->options & NAND_BBT_VERSION)) { - nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); + nand_read_raw (mtd, buf, md->pages[0] << this->page_shift, mtd->oobblock, mtd->oobsize); md->version[0] = buf[mtd->oobblock + md->veroffs]; printk (KERN_DEBUG "Bad block table at page %d, version 0x%02X\n", md->pages[0], md->version[0]); } @@ -268,7 +268,7 @@ static void create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc else { if (bd->options & NAND_BBT_SCAN2NDPAGE) len = 2; - else + else len = 1; } scanlen = mtd->oobblock + mtd->oobsize; @@ -285,20 +285,20 @@ static void create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc if (chip >= this->numchips) { printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n", chip + 1, this->numchips); - return; + return; } numblocks = this->chipsize >> (this->bbt_erase_shift - 1); startblock = chip * numblocks; numblocks += startblock; from = startblock << (this->bbt_erase_shift - 1); } - + for (i = startblock; i < numblocks;) { nand_read_raw (mtd, buf, from, readlen, ooblen); for (j = 0; j < len; j++) { if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) { this->bbt[i >> 3] |= 0x03 << (i & 0x6); - printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", + printk (KERN_WARNING "Bad eraseblock %d at 0x%08x\n", i >> 1, (unsigned int) from); break; } @@ -315,15 +315,15 @@ static void create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc * @td: descriptor for the bad block table * * Read the bad block table by searching for a given ident pattern. - * Search is preformed either from the beginning up or from the end of + * Search is preformed either from the beginning up or from the end of * the device downwards. The search starts always at the start of a * block. - * If the option NAND_BBT_PERCHIP is given, each chip is searched + * If the option NAND_BBT_PERCHIP is given, each chip is searched * for a bbt, which contains the bad block information of this chip. * This is neccecary to provide support for certain DOC devices. * - * The bbt ident pattern resides in the oob area of the first page - * in a block. + * 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) { @@ -338,10 +338,10 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr startblock = (mtd->size >> this->bbt_erase_shift) -1; dir = -1; } else { - startblock = 0; + startblock = 0; dir = 1; - } - + } + /* Do we have a bbt per chip ? */ if (td->options & NAND_BBT_PERCHIP) { chips = this->numchips; @@ -351,19 +351,19 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr chips = 1; bbtblocks = mtd->size >> this->bbt_erase_shift; } - + /* Number of bits for each erase block in the bbt */ bits = td->options & NAND_BBT_NRBITS_MSK; - + for (i = 0; i < chips; i++) { /* Reset version information */ - td->version[i] = 0; + td->version[i] = 0; td->pages[i] = -1; /* Scan the maximum number of blocks */ for (block = 0; block < td->maxblocks; block++) { int actblock = startblock + dir * block; /* Read first page */ - nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); + nand_read_raw (mtd, buf, actblock << this->bbt_erase_shift, mtd->oobblock, mtd->oobsize); if (!check_pattern(buf, scanlen, mtd->oobblock, td)) { td->pages[i] = actblock << (this->bbt_erase_shift - this->page_shift); if (td->options & NAND_BBT_VERSION) { @@ -381,46 +381,46 @@ static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr else printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]); } - return 0; + return 0; } /** * search_read_bbts - [GENERIC] scan the device for bad block table(s) * @mtd: MTD device structure * @buf: temporary buffer - * @td: descriptor for the bad block table + * @td: descriptor for the bad block table * @md: descriptor for the bad block table mirror * * Search and read the bad block table(s) */ -static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, +static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md) { /* Search the primary table */ search_bbt (mtd, buf, td); - + /* Search the mirror table */ if (md) search_bbt (mtd, buf, md); - + /* Force result check */ - return 1; + return 1; } - -/** + +/** * write_bbt - [GENERIC] (Re)write the bad block table * * @mtd: MTD device structure * @buf: temporary buffer - * @td: descriptor for the bad block table + * @td: descriptor for the bad block table * @md: descriptor for the bad block table mirror * @chipsel: selector for a specific chip, -1 for all * * (Re)write the bad block table * */ -static int write_bbt (struct mtd_info *mtd, uint8_t *buf, +static int write_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel) { struct nand_chip *this = mtd->priv; @@ -439,7 +439,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, /* Write bad block table per chip rather than per device ? */ if (td->options & NAND_BBT_PERCHIP) { numblocks = (int) (this->chipsize >> this->bbt_erase_shift); - /* Full device write or specific chip ? */ + /* Full device write or specific chip ? */ if (chipsel == -1) { nrchips = this->numchips; } else { @@ -449,19 +449,19 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, } else { numblocks = (int) (mtd->size >> this->bbt_erase_shift); nrchips = 1; - } - + } + /* Loop through the chips */ for (; chip < nrchips; chip++) { - - /* There was already a version of the table, reuse the page - * This applies for absolute placement too, as we have the + + /* There was already a version of the table, reuse the page + * This applies for absolute placement too, as we have the * page nr. in td->pages. */ if (td->pages[chip] != -1) { page = td->pages[chip]; goto write; - } + } /* Automatic placement of the bad block table */ /* Search direction top -> down ? */ @@ -471,7 +471,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, } else { startblock = chip * numblocks; dir = 1; - } + } for (i = 0; i < td->maxblocks; i++) { int block = startblock + dir * i; @@ -488,7 +488,7 @@ static int write_bbt (struct mtd_info *mtd, uint8_t *buf, } printk (KERN_ERR "No space left to write bad block table\n"); return -ENOSPC; -write: +write: /* Set up shift count and masks for the flash table */ bits = td->options & NAND_BBT_NRBITS_MSK; @@ -499,14 +499,14 @@ write: case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; msk[2] = ~rcode; msk[3] = 0xff; break; default: return -EINVAL; } - + bbtoffs = chip * (numblocks >> 2); - + to = ((loff_t) page) << this->page_shift; memcpy (&oobinfo, this->autooob, sizeof(oobinfo)); oobinfo.useecc = MTD_NANDECC_PLACEONLY; - + /* Must we save the block contents ? */ if (td->options & NAND_BBT_SAVECONTENT) { /* Make it block aligned */ @@ -545,7 +545,7 @@ write: buf[len + td->veroffs] = td->version[chip]; } } - + /* walk through the memory table */ for (i = 0; i < numblocks; ) { uint8_t dat; @@ -557,7 +557,7 @@ write: dat >>= 2; } } - + memset (&einfo, 0, sizeof (einfo)); einfo.mtd = mtd; einfo.addr = (unsigned long) to; @@ -567,18 +567,18 @@ write: printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res); return res; } - + res = mtd->write_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo); if (res < 0) { printk (KERN_WARNING "nand_bbt: Error while writing bad block table %d\n", res); return res; } - printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", + printk (KERN_DEBUG "Bad block table written to 0x%08x, version 0x%02X\n", (unsigned int) to, td->version[chip]); - + /* Mark it as used */ td->pages[chip] = page; - } + } return 0; } @@ -587,7 +587,7 @@ write: * @mtd: MTD device structure * @bd: descriptor for the good/bad block search pattern * - * The function creates a memory based bbt by scanning the device + * The function creates a memory based bbt by scanning the device * for manufacturer / software marked good / bad blocks */ static int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) @@ -621,11 +621,11 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des struct nand_bbt_descr *rd, *rd2; /* Do we have a bbt per chip ? */ - if (td->options & NAND_BBT_PERCHIP) + if (td->options & NAND_BBT_PERCHIP) chips = this->numchips; - else + else chips = 1; - + for (i = 0; i < chips; i++) { writeops = 0; rd = NULL; @@ -640,7 +640,7 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des } if (td->pages[i] == -1) { - rd = md; + rd = md; td->version[i] = md->version[i]; writeops = 1; goto writecheck; @@ -658,7 +658,7 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des if (!(td->options & NAND_BBT_VERSION)) rd2 = md; goto writecheck; - } + } if (((int8_t) (td->version[i] - md->version[i])) > 0) { rd = td; @@ -683,15 +683,15 @@ static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_des create: /* Create the bad block table by scanning the device ? */ if (!(td->options & NAND_BBT_CREATE)) - continue; - + continue; + /* Create the table in memory by scanning the chip(s) */ create_bbt (mtd, buf, bd, chipsel); - + td->version[i] = 1; if (md) - md->version[i] = 1; -writecheck: + md->version[i] = 1; +writecheck: /* read back first ? */ if (rd) read_abs_bbt (mtd, buf, rd, chipsel); @@ -705,7 +705,7 @@ writecheck: 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); @@ -713,11 +713,11 @@ writecheck: return res; } } - return 0; + return 0; } /** - * mark_bbt_regions - [GENERIC] mark the bad block table regions + * mark_bbt_regions - [GENERIC] mark the bad block table regions * @mtd: MTD device structure * @td: bad block table descriptor * @@ -738,14 +738,14 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) } else { chips = 1; nrblocks = (int)(mtd->size >> this->bbt_erase_shift); - } - + } + for (i = 0; i < chips; i++) { if ((td->options & NAND_BBT_ABSPAGE) || !(td->options & NAND_BBT_WRITE)) { if (td->pages[i] == -1) continue; block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift); - block <<= 1; + block <<= 1; oldval = this->bbt[(block >> 3)]; newval = oldval | (0x2 << (block & 0x06)); this->bbt[(block >> 3)] = newval; @@ -756,16 +756,16 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) update = 0; if (td->options & NAND_BBT_LASTBLOCK) block = ((i + 1) * nrblocks) - td->maxblocks; - else + else block = i * nrblocks; - block <<= 1; + block <<= 1; for (j = 0; j < td->maxblocks; j++) { oldval = this->bbt[(block >> 3)]; newval = oldval | (0x2 << (block & 0x06)); this->bbt[(block >> 3)] = newval; if (oldval != newval) update = 1; block += 2; - } + } /* If we want reserved blocks to be recorded to flash, and some new ones have been marked, then we need to update the stored bbts. This should only happen once. */ @@ -779,7 +779,7 @@ static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td) * @mtd: MTD device structure * @bd: descriptor for the good/bad block search pattern * - * The function checks, if a bad block table(s) is/are already + * The function checks, if a bad block table(s) is/are already * available. If not it scans the device for manufacturer * marked good / bad blocks and writes the bad block table(s) to * the selected place. @@ -822,30 +822,30 @@ int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd) this->bbt = NULL; return -ENOMEM; } - + /* Is the bbt at a given page ? */ if (td->options & NAND_BBT_ABSPAGE) { res = read_abs_bbts (mtd, buf, td, md); - } else { + } else { /* Search the bad block table using a pattern in oob */ res = search_read_bbts (mtd, buf, td, md); - } + } - if (res) + if (res) res = check_create (mtd, buf, bd); - + /* Prevent the bbt regions from erasing / writing */ mark_bbt_region (mtd, td); if (md) mark_bbt_region (mtd, md); - + kfree (buf); return res; } /** - * nand_update_bbt - [NAND Interface] update bad block table(s) + * nand_update_bbt - [NAND Interface] update bad block table(s) * @mtd: MTD device structure * @offs: the offset of the newly marked block * @@ -872,7 +872,7 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) printk (KERN_ERR "nand_update_bbt: Out of memory\n"); return -ENOMEM; } - + writeops = md != NULL ? 0x03 : 0x01; /* Do we have a bbt per chip ? */ @@ -886,7 +886,7 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) td->version[chip]++; if (md) - md->version[chip]++; + md->version[chip]++; /* Write the bad block table to the device ? */ if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) { @@ -899,15 +899,15 @@ int nand_update_bbt (struct mtd_info *mtd, loff_t offs) res = write_bbt (mtd, buf, md, td, chipsel); } -out: +out: kfree (buf); return res; } -/* Define some generic bad / good block scan pattern which are used +/* Define some generic bad / good block scan pattern which are used * while scanning a device for factory marked good / bad blocks - * - * The memory based patterns just + * + * The memory based patterns just */ static uint8_t scan_ff_pattern[] = { 0xff, 0xff }; @@ -954,7 +954,7 @@ static uint8_t bbt_pattern[] = {'B', 'b', 't', '0' }; static uint8_t mirror_pattern[] = {'1', 't', 'b', 'B' }; static struct nand_bbt_descr bbt_main_descr = { - .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, .offs = 8, .len = 4, @@ -964,7 +964,7 @@ static struct nand_bbt_descr bbt_main_descr = { }; static struct nand_bbt_descr bbt_mirror_descr = { - .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE + .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, .offs = 8, .len = 4, @@ -974,7 +974,7 @@ static struct nand_bbt_descr bbt_mirror_descr = { }; /** - * nand_default_bbt - [NAND Interface] Select a default bad block table for the device + * nand_default_bbt - [NAND Interface] Select a default bad block table for the device * @mtd: MTD device structure * * This function selects the default bad block table @@ -984,29 +984,29 @@ static struct nand_bbt_descr bbt_mirror_descr = { int nand_default_bbt (struct mtd_info *mtd) { struct nand_chip *this = mtd->priv; - - /* Default for AG-AND. We must use a flash based + + /* Default for AG-AND. We must use a flash based * bad block table as the devices have factory marked * _good_ blocks. Erasing those blocks leads to loss * of the good / bad information, so we _must_ store - * this information in a good / bad table during + * this information in a good / bad table during * startup */ if (this->options & NAND_IS_AND) { /* Use the default pattern descriptors */ - if (!this->bbt_td) { + if (!this->bbt_td) { this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; - } + } this->options |= NAND_USE_FLASH_BBT; return nand_scan_bbt (mtd, &agand_flashbased); } - - + + /* Is a flash based bad block table requested ? */ if (this->options & NAND_USE_FLASH_BBT) { - /* Use the default pattern descriptors */ - if (!this->bbt_td) { + /* Use the default pattern descriptors */ + if (!this->bbt_td) { this->bbt_td = &bbt_main_descr; this->bbt_md = &bbt_mirror_descr; } @@ -1026,23 +1026,23 @@ int nand_default_bbt (struct mtd_info *mtd) } /** - * nand_isbad_bbt - [NAND Interface] Check if a block is bad + * nand_isbad_bbt - [NAND Interface] Check if a block is bad * @mtd: MTD device structure * @offs: offset in the device * @allowbbt: allow access to bad block table region * -*/ + */ int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt) { struct nand_chip *this = mtd->priv; int block; uint8_t res; - + /* Get block number * 2 */ block = (int) (offs >> (this->bbt_erase_shift - 1)); res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03; - DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", + DEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n", (unsigned int)offs, res, block >> 1); switch ((int)res) { diff --git a/drivers/nand/nand_ecc.c b/drivers/nand/nand_ecc.c index dc9db4b480..6e11c22858 100644 --- a/drivers/nand/nand_ecc.c +++ b/drivers/nand/nand_ecc.c @@ -13,16 +13,16 @@ * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 or (at your option) any * later version. - * + * * This file is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. - * + * * You should have received a copy of the GNU General Public License along * with this file; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * + * * As a special exception, if other files instantiate templates or use * macros or inline functions from these files, or you compile these * files and link them with other works to produce a work based on these @@ -30,7 +30,7 @@ * covered by the GNU General Public License. However the source code for * these files must still be made available in accordance with section (3) * of the GNU General Public License. - * + * * This exception does not invalidate any other reasons why a work based on * this file might be covered by the GNU General Public License. */ @@ -66,7 +66,7 @@ static const u_char nand_ecc_precalc_table[] = { * nand_trans_result - [GENERIC] create non-inverted ECC * @reg2: line parity reg 2 * @reg3: line parity reg 3 - * @ecc_code: ecc + * @ecc_code: ecc * * Creates non-inverted ECC code from line parity */ @@ -74,11 +74,11 @@ static void nand_trans_result(u_char reg2, u_char reg3, u_char *ecc_code) { u_char a, b, i, tmp1, tmp2; - + /* Initialize variables */ a = b = 0x80; tmp1 = tmp2 = 0; - + /* Calculate first ECC byte */ for (i = 0; i < 4; i++) { if (reg3 & a) /* LP15,13,11,9 --> ecc_code[0] */ @@ -89,7 +89,7 @@ static void nand_trans_result(u_char reg2, u_char reg3, b >>= 1; a >>= 1; } - + /* Calculate second ECC byte */ b = 0x80; for (i = 0; i < 4; i++) { @@ -101,7 +101,7 @@ static void nand_trans_result(u_char reg2, u_char reg3, b >>= 1; a >>= 1; } - + /* Store two of the ECC bytes */ ecc_code[0] = tmp1; ecc_code[1] = tmp2; @@ -117,28 +117,28 @@ int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code { u_char idx, reg1, reg2, reg3; int j; - + /* Initialize variables */ reg1 = reg2 = reg3 = 0; ecc_code[0] = ecc_code[1] = ecc_code[2] = 0; - - /* Build up column parity */ + + /* Build up column parity */ for(j = 0; j < 256; j++) { - + /* Get CP0 - CP5 from table */ idx = nand_ecc_precalc_table[dat[j]]; reg1 ^= (idx & 0x3f); - + /* All bit XOR = 1 ? */ if (idx & 0x40) { reg3 ^= (u_char) j; reg2 ^= ~((u_char) j); } } - + /* Create non-inverted ECC code from line parity */ nand_trans_result(reg2, reg3, ecc_code); - + /* Calculate final ECC code */ ecc_code[0] = ~ecc_code[0]; ecc_code[1] = ~ecc_code[1]; @@ -158,12 +158,12 @@ int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) { u_char a, b, c, d1, d2, d3, add, bit, i; - - /* Do error detection */ + + /* Do error detection */ d1 = calc_ecc[0] ^ read_ecc[0]; d2 = calc_ecc[1] ^ read_ecc[1]; d3 = calc_ecc[2] ^ read_ecc[2]; - + if ((d1 | d2 | d3) == 0) { /* No errors */ return 0; @@ -172,7 +172,7 @@ int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_cha a = (d1 ^ (d1 >> 1)) & 0x55; b = (d2 ^ (d2 >> 1)) & 0x55; c = (d3 ^ (d3 >> 1)) & 0x54; - + /* Found and will correct single bit error in the data */ if ((a == 0x55) && (b == 0x55) && (c == 0x54)) { c = 0x80; @@ -205,8 +205,7 @@ int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_cha a ^= (b << bit); dat[add] = a; return 1; - } - else { + } else { i = 0; while (d1) { if (d1 & 0x01) @@ -236,7 +235,7 @@ int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_cha } } } - + /* Should never happen */ return -1; } diff --git a/drivers/nand/nand_ids.c b/drivers/nand/nand_ids.c index 5df1e8971d..39882cc76b 100644 --- a/drivers/nand/nand_ids.c +++ b/drivers/nand/nand_ids.c @@ -18,14 +18,14 @@ /* * Chip ID list -* +* * Name. ID code, pagesize, chipsize in MegaByte, eraseblock size, * options -* +* * Pagesize; 0, 256, 512 * 0 get this information from the extended chip ID + 256 256 Byte page size -* 512 512 Byte page size +* 512 512 Byte page size */ struct nand_flash_dev nand_flash_ids[] = { {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, @@ -38,36 +38,36 @@ struct nand_flash_dev nand_flash_ids[] = { {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0}, {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0}, {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0}, - + {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0}, {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, - + {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16}, {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16}, - + {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0}, {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0}, {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16}, {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16}, - + {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0}, {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0}, {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16}, {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16}, - + {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0}, {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0}, {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16}, {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - + {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0}, {"NAND 512MiB 3,3V 8-bit", 0xDC, 512, 512, 0x4000, 0}, - + /* These are the new chips with large page size. The pagesize * and the erasesize is determined from the extended id bytes */ @@ -82,13 +82,13 @@ struct nand_flash_dev nand_flash_ids[] = { {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - + /* 4 Gigabit */ {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - + /* 8 Gigabit */ {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR}, @@ -101,11 +101,11 @@ struct nand_flash_dev nand_flash_ids[] = { {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR}, - /* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout ! + /* Renesas AND 1 Gigabit. Those chips do not support extended id and have a strange page/block layout ! * The chosen minimum erasesize is 4 * 2 * 2048 = 16384 Byte, as those chips have an array of 4 page planes * 1 block = 2 pages, but due to plane arrangement the blocks 0-3 consists of page 0 + 4,1 + 5, 2 + 6, 3 + 7 * Anyway JFFS2 would increase the eraseblock size so we chose a combined one which can be erased in one go - * There are more speed improvements for reads and writes possible, but not implemented now + * There are more speed improvements for reads and writes possible, but not implemented now */ {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY}, |