# drivers/mtd/nand/Kconfig
-# $Id: Kconfig,v 1.34 2005/09/23 01:44:55 ppopov Exp $
+# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $
menu "NAND Flash Device Drivers"
depends on MTD!=n
tristate "SmartMediaCard on autronix autcpu12 board"
depends on MTD_NAND && ARCH_AUTCPU12
help
- This enables the driver for the autronix autcpu12 board to
+ This enables the driver for the autronix autcpu12 board to
access the SmartMediaCard.
config MTD_NAND_EDB7312
tristate "Support for Cirrus Logic EBD7312 evaluation board"
depends on MTD_NAND && ARCH_EDB7312
help
- This enables the driver for the Cirrus Logic EBD7312 evaluation
+ This enables the driver for the Cirrus Logic EBD7312 evaluation
board to access the onboard NAND Flash.
config MTD_NAND_H1900
select REED_SOLOMON
select REED_SOLOMON_DEC8
help
- This enables the driver for the Renesas Technology AG-AND
+ This enables the driver for the Renesas Technology AG-AND
flash interface board (FROM_BOARD4)
config MTD_NAND_PPCHAMELEONEVB
SoCs
No board specfic support is done by this driver, each board
- must advertise a platform_device for the driver to attach.
+ must advertise a platform_device for the driver to attach.
config MTD_NAND_S3C2410_DEBUG
bool "S3C2410 NAND driver debug"
*
* Copyright (C) 2004 Embedded Edge, LLC
*
- * $Id: au1550nd.c,v 1.12 2005/09/23 01:44:55 ppopov Exp $
+ * $Id: au1550nd.c,v 1.13 2005/11/07 11:14:30 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#else
#include <asm/au1000.h>
#ifdef CONFIG_MIPS_PB1550
-#include <asm/pb1550.h>
+#include <asm/pb1550.h>
#endif
#ifdef CONFIG_MIPS_DB1550
-#include <asm/db1x00.h>
+#include <asm/db1x00.h>
#endif
#endif
* Define partitions for flash device
*/
const static struct mtd_partition partition_info[] = {
- {
+ {
.name = "NAND FS 0",
.offset = 0,
- .size = 8*1024*1024
+ .size = 8*1024*1024
},
- {
+ {
.name = "NAND FS 1",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL
* au_read_byte16 - read one byte endianess aware from the chip
* @mtd: MTD device structure
*
- * read function for 16bit buswith with
+ * read function for 16bit buswith with
* endianess conversion
*/
static u_char au_read_byte16(struct mtd_info *mtd)
* au_read_word - read one word from the chip
* @mtd: MTD device structure
*
- * read function for 16bit buswith without
+ * read function for 16bit buswith without
* endianess conversion
*/
static u16 au_read_word(struct mtd_info *mtd)
* @mtd: MTD device structure
* @word: data word to write
*
- * write function for 16bit buswith without
+ * write function for 16bit buswith without
* endianess conversion
*/
static void au_write_word(struct mtd_info *mtd, u16 word)
}
/**
- * au_read_buf - read chip data into buffer
+ * au_read_buf - read chip data into buffer
* @mtd: MTD device structure
* @buf: buffer to store date
* @len: number of bytes to read
for (i=0; i<len; i++) {
buf[i] = readb(this->IO_ADDR_R);
- au_sync();
+ au_sync();
}
}
/**
- * au_verify_buf - Verify chip data against buffer
+ * au_verify_buf - Verify chip data against buffer
* @mtd: MTD device structure
* @buf: buffer containing the data to compare
* @len: number of bytes to compare
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);
au_sync();
}
-
+
}
/**
- * au_read_buf16 - read chip data into buffer
+ * au_read_buf16 - read chip data into buffer
* @mtd: MTD device structure
* @buf: buffer to store date
* @len: number of bytes to read
}
/**
- * au_verify_buf16 - Verify chip data against buffer
+ * au_verify_buf16 - Verify chip data against buffer
* @mtd: MTD device structure
* @buf: buffer containing the data to compare
* @len: number of bytes to compare
case NAND_CTL_CLRCLE: this->IO_ADDR_W = p_nand + MEM_STNAND_DATA; break;
case NAND_CTL_SETALE: this->IO_ADDR_W = p_nand + MEM_STNAND_ADDR; break;
- case NAND_CTL_CLRALE:
- this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
- /* FIXME: Nobody knows why this is neccecary,
+ case NAND_CTL_CLRALE:
+ this->IO_ADDR_W = p_nand + MEM_STNAND_DATA;
+ /* FIXME: Nobody knows why this is neccecary,
* but it works only that way */
- udelay(1);
+ udelay(1);
break;
- case NAND_CTL_SETNCE:
+ case NAND_CTL_SETNCE:
/* assert (force assert) chip enable */
au_writel((1<<(4+NAND_CS)) , MEM_STNDCTL); break;
break;
- case NAND_CTL_CLRNCE:
+ case NAND_CTL_CLRNCE:
/* deassert chip enable */
au_writel(0, MEM_STNDCTL); break;
break;
}
this->IO_ADDR_R = this->IO_ADDR_W;
-
+
/* Drain the writebuffer */
au_sync();
}
u32 nand_phys;
/* Allocate memory for MTD device structure and private data */
- au1550_mtd = kmalloc (sizeof(struct mtd_info) +
+ au1550_mtd = kmalloc (sizeof(struct mtd_info) +
sizeof (struct nand_chip), GFP_KERNEL);
if (!au1550_mtd) {
printk ("Unable to allocate NAND MTD dev structure.\n");
/* disable interrupts */
au_writel(au_readl(MEM_STNDCTL) & ~(1<<8), MEM_STNDCTL);
-
+
/* disable NAND boot */
au_writel(au_readl(MEM_STNDCTL) & ~(1<<0), MEM_STNDCTL);
/* set gpio206 high */
au_writel(au_readl(GPIO2_DIR) & ~(1<<6), GPIO2_DIR);
- boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) |
+ boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) |
((bcsr->status >> 6) & 0x1);
switch (boot_swapboot) {
case 0:
au_writel(NAND_STADDR, MEM_STADDR3);
}
#endif
-
+
/* Locate NAND chip-select in order to determine NAND phys address */
mem_staddr = 0x00000000;
if (((au_readl(MEM_STCFG0) & 0x7) == 0x5) && (NAND_CS == 0))
this->hwcontrol = au1550_hwcontrol;
this->dev_ready = au1550_device_ready;
/* 30 us command delay time */
- this->chip_delay = 30;
+ this->chip_delay = 30;
this->eccmode = NAND_ECC_SOFT;
this->options = NAND_NO_AUTOINCR;
outio:
iounmap ((void *)p_nand);
-
+
outmem:
kfree (au1550_mtd);
return retval;
*
* Derived from drivers/mtd/spia.c
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
- *
- * $Id: autcpu12.c,v 1.22 2004/11/04 12:53:10 gleixner Exp $
+ *
+ * $Id: autcpu12.c,v 1.23 2005/11/07 11:14:30 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
*
* Overview:
* This is a device driver for the NAND flash device found on the
- * autronix autcpu12 board, which is a SmartMediaCard. It supports
+ * autronix autcpu12 board, which is a SmartMediaCard. It supports
* 16MiB, 32MiB and 64MiB cards.
*
*
#define NUM_PARTITIONS32K 2
#define NUM_PARTITIONS64K 2
#define NUM_PARTITIONS128K 2
-/*
+/*
* hardware specific access to control-lines
*/
static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd)
this->hwcontrol = autcpu12_hwcontrol;
this->dev_ready = autcpu12_device_ready;
/* 20 us command delay time */
- this->chip_delay = 20;
+ this->chip_delay = 20;
this->eccmode = NAND_ECC_SOFT;
/* Enable the following for a flash based bad block table */
this->options = NAND_USE_FLASH_BBT;
*/
this->options = NAND_USE_FLASH_BBT;
-
+
/* Scan to find existance of the device */
if (nand_scan (autcpu12_mtd, 1)) {
err = -ENXIO;
goto out_ior;
}
-
+
/* Register the partitions */
switch(autcpu12_mtd->size){
case SZ_16M: add_mtd_partitions(autcpu12_mtd, partition_info16k, NUM_PARTITIONS16K); break;
case SZ_32M: add_mtd_partitions(autcpu12_mtd, partition_info32k, NUM_PARTITIONS32K); break;
- case SZ_64M: add_mtd_partitions(autcpu12_mtd, partition_info64k, NUM_PARTITIONS64K); break;
- case SZ_128M: add_mtd_partitions(autcpu12_mtd, partition_info128k, NUM_PARTITIONS128K); break;
+ case SZ_64M: add_mtd_partitions(autcpu12_mtd, partition_info64k, NUM_PARTITIONS64K); break;
+ case SZ_128M: add_mtd_partitions(autcpu12_mtd, partition_info128k, NUM_PARTITIONS128K); break;
default: {
- printk ("Unsupported SmartMedia device\n");
+ printk ("Unsupported SmartMedia device\n");
err = -ENXIO;
goto out_ior;
}
/* unmap physical adress */
iounmap((void *)autcpu12_fio_base);
-
+
/* Free the MTD device structure */
kfree (autcpu12_mtd);
}
-/*
+/*
* drivers/mtd/nand/diskonchip.c
*
* (C) 2003 Red Hat, Inc.
* 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 1.54 2005/04/07 14:22:55 dbrown Exp $
+ * $Id: diskonchip.c,v 1.55 2005/11/07 11:14:30 gleixner Exp $
*/
#include <linux/kernel.h>
static unsigned long __initdata doc_locations[] = {
#if defined (__alpha__) || defined(__i386__) || defined(__x86_64__)
#ifdef CONFIG_MTD_NAND_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__)
/* 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.
/* 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)
*/
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.
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;
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;
{
volatile char dummy;
int i;
-
+
for (i = 0; i < cycles; i++) {
if (DoC_is_Millennium(doc))
dummy = ReadDOC(doc->virtadr, NOP);
else
dummy = ReadDOC(doc->virtadr, DOCStatus);
}
-
+
}
#define CDSN_CTRL_FR_B_MASK (CDSN_CTRL_FR_B0 | CDSN_CTRL_FR_B1)
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;
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;
}
}
-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;
}
}
-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;
doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
this->write_byte(mtd, 0);
doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
-
+
/* We cant' use dev_ready here, but at least we wait for the
- * command to complete
+ * command to complete
*/
udelay(50);
-
+
ret = this->read_byte(mtd) << 8;
ret |= this->read_byte(mtd);
this->read_buf = &doc2000_readbuf_dword;
}
}
-
+
return ret;
}
struct doc_priv *doc = this->priv;
int status;
-
+
DoC_WaitReady(doc);
this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
DoC_WaitReady(doc);
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;
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;
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;
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;
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;
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;
WriteDOC(0, docptr, Mplus_FlashControl);
}
- /*
+ /*
* program and erase have their own busy handlers
* status and sequential in needs no delay
*/
/* This applies to read commands */
default:
- /*
+ /*
* If we don't have access to the busy pin, we apply the given
* command delay
*/
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;
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);
dummy = ReadDOC(docptr, ECCConf);
dummy = ReadDOC(docptr, ECCConf);
}
-
+
/* Error occured ? */
if (dummy & 0x80) {
for (i = 0; i < 6; i++) {
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
}
return ret;
}
-
+
//u_char mydatabuf[528];
/* The strange out-of-order .oobfree list below is a (possibly unneeded)
.eccpos = {0, 1, 2, 3, 4, 5},
.oobfree = { {8, 8}, {6, 2} }
};
-
+
/* 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
mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits);
mh->FormatFlags = le32_to_cpu(mh->FormatFlags);
mh->PercentUsed = le32_to_cpu(mh->PercentUsed);
-
+
printk(KERN_INFO " bootRecordID = %s\n"
" NoOfBootImageBlocks = %d\n"
" NoOfBinaryPartitions = %d\n"
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);
* 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);
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
* Derived from drivers/mtd/nand/autcpu12.c
* Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
*
- * $Id: edb7312.c,v 1.11 2004/11/04 12:53:10 gleixner Exp $
+ * $Id: edb7312.c,v 1.12 2005/11/07 11:14:30 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#endif
-/*
+/*
* hardware specific access to control-lines
*/
-static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd)
+static void ep7312_hwcontrol(struct mtd_info *mtd, int cmd)
{
switch(cmd) {
-
- case NAND_CTL_SETCLE:
- clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr);
+
+ case NAND_CTL_SETCLE:
+ clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr);
break;
- case NAND_CTL_CLRCLE:
+ case NAND_CTL_CLRCLE:
clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr);
break;
-
+
case NAND_CTL_SETALE:
clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr);
break;
case NAND_CTL_CLRALE:
clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr);
break;
-
+
case NAND_CTL_SETNCE:
clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr);
break;
int mtd_parts_nb = 0;
struct mtd_partition *mtd_parts = 0;
void __iomem * ep7312_fio_base;
-
+
/* Allocate memory for MTD device structure and private data */
- ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
+ ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
sizeof(struct nand_chip),
GFP_KERNEL);
if (!ep7312_mtd) {
printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
return -ENOMEM;
}
-
+
/* map physical adress */
ep7312_fio_base = ioremap(ep7312_fio_pbase, SZ_1K);
if(!ep7312_fio_base) {
kfree(ep7312_mtd);
return -EIO;
}
-
+
/* Get pointer to private data */
this = (struct nand_chip *) (&ep7312_mtd[1]);
-
+
/* Initialize structures */
memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info));
memset((char *) this, 0, sizeof(struct nand_chip));
-
+
/* Link the private data with the MTD structure */
ep7312_mtd->priv = this;
-
+
/*
* Set GPIO Port B control register so that the pins are configured
* to be outputs for controlling the NAND flash.
*/
clps_writeb(0xf0, ep7312_pxddr);
-
+
/* insert callbacks */
this->IO_ADDR_R = ep7312_fio_base;
this->IO_ADDR_W = ep7312_fio_base;
this->dev_ready = ep7312_device_ready;
/* 15 us command delay time */
this->chip_delay = 15;
-
+
/* Scan to find existence of the device */
if (nand_scan (ep7312_mtd, 1)) {
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENXIO;
}
-
+
#ifdef CONFIG_MTD_PARTITIONS
ep7312_mtd->name = "edb7312-nand";
mtd_parts_nb = parse_mtd_partitions(ep7312_mtd, part_probes,
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
}
-
+
/* Register the partitions */
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(ep7312_mtd, mtd_parts, mtd_parts_nb);
-
+
/* Return happy */
return 0;
}
static void __exit ep7312_cleanup (void)
{
struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1];
-
+
/* Release resources, unregister device */
nand_release (ap7312_mtd);
-
+
/* Free internal data buffer */
kfree (this->data_buf);
-
+
/* Free the MTD device structure */
kfree (ep7312_mtd);
}
* Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
* Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
*
- * $Id: h1910.c,v 1.5 2004/11/04 12:53:10 gleixner Exp $
+ * $Id: h1910.c,v 1.6 2005/11/07 11:14:30 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#endif
-/*
+/*
* hardware specific access to control-lines
*/
-static void h1910_hwcontrol(struct mtd_info *mtd, int cmd)
+static void h1910_hwcontrol(struct mtd_info *mtd, int cmd)
{
struct nand_chip* this = (struct nand_chip *) (mtd->priv);
-
+
switch(cmd) {
-
- case NAND_CTL_SETCLE:
+
+ case NAND_CTL_SETCLE:
this->IO_ADDR_R |= (1 << 2);
this->IO_ADDR_W |= (1 << 2);
break;
- case NAND_CTL_CLRCLE:
+ case NAND_CTL_CLRCLE:
this->IO_ADDR_R &= ~(1 << 2);
this->IO_ADDR_W &= ~(1 << 2);
break;
-
+
case NAND_CTL_SETALE:
this->IO_ADDR_R |= (1 << 3);
this->IO_ADDR_W |= (1 << 3);
this->IO_ADDR_R &= ~(1 << 3);
this->IO_ADDR_W &= ~(1 << 3);
break;
-
+
case NAND_CTL_SETNCE:
break;
case NAND_CTL_CLRNCE:
int mtd_parts_nb = 0;
struct mtd_partition *mtd_parts = 0;
void __iomem *nandaddr;
-
+
if (!machine_is_h1900())
return -ENODEV;
-
+
nandaddr = __ioremap(0x08000000, 0x1000, 0, 1);
if (!nandaddr) {
printk("Failed to ioremap nand flash.\n");
return -ENOMEM;
}
-
+
/* Allocate memory for MTD device structure and private data */
- h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) +
+ h1910_nand_mtd = kmalloc(sizeof(struct mtd_info) +
sizeof(struct nand_chip),
GFP_KERNEL);
if (!h1910_nand_mtd) {
iounmap ((void *) nandaddr);
return -ENOMEM;
}
-
+
/* Get pointer to private data */
this = (struct nand_chip *) (&h1910_nand_mtd[1]);
-
+
/* Initialize structures */
memset((char *) h1910_nand_mtd, 0, sizeof(struct mtd_info));
memset((char *) this, 0, sizeof(struct nand_chip));
-
+
/* Link the private data with the MTD structure */
h1910_nand_mtd->priv = this;
-
+
/*
* Enable VPEN
*/
GPSR(37) = GPIO_bit(37);
-
+
/* insert callbacks */
this->IO_ADDR_R = nandaddr;
this->IO_ADDR_W = nandaddr;
this->chip_delay = 50;
this->eccmode = NAND_ECC_SOFT;
this->options = NAND_NO_AUTOINCR;
-
+
/* Scan to find existence of the device */
if (nand_scan (h1910_nand_mtd, 1)) {
printk(KERN_NOTICE "No NAND device - returning -ENXIO\n");
iounmap ((void *) nandaddr);
return -ENXIO;
}
-
+
#ifdef CONFIG_MTD_CMDLINE_PARTS
- mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts,
+ mtd_parts_nb = parse_cmdline_partitions(h1910_nand_mtd, &mtd_parts,
"h1910-nand");
if (mtd_parts_nb > 0)
part_type = "command line";
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
}
-
+
/* Register the partitions */
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(h1910_nand_mtd, mtd_parts, mtd_parts_nb);
-
+
/* Return happy */
return 0;
}
static void __exit h1910_cleanup (void)
{
struct nand_chip *this = (struct nand_chip *) &h1910_nand_mtd[1];
-
+
/* Release resources, unregister device */
nand_release (h1910_nand_mtd);
* 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
* 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
*
* 12-05-2004 dmarlin: add workaround for Renesas AG-AND chips "disturb" issue.
* Basically, any block not rewritten may lose data when surrounding blocks
- * are rewritten many times. JFFS2 ensures this doesn't happen for blocks
+ * are rewritten many times. JFFS2 ensures this doesn't happen for blocks
* it uses, but the Bad Block Table(s) may not be rewritten. To ensure they
* do not lose data, force them to be rewritten when some of the surrounding
- * blocks are erased. Rather than tracking a specific nearby block (which
- * could itself go bad), use a page address 'mask' to select several blocks
+ * blocks are erased. Rather than tracking a specific nearby block (which
+ * could itself go bad), use a page address 'mask' to select several blocks
* in the same area, and rewrite the BBT when any of them are erased.
*
- * 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas
+ * 01-03-2005 dmarlin: added support for the device recovery command sequence for Renesas
* AG-AND chips. If there was a sudden loss of power during an erase operation,
* a "device recovery" operation must be performed when power is restored
* to ensure correct operation.
*
- * 01-20-2005 dmarlin: added support for optional hardware specific callback routine to
+ * 01-20-2005 dmarlin: added support for optional hardware specific callback routine to
* perform extra error status checks on erase and write failures. This required
* adding a wrapper function for nand_read_ecc.
*
* 08-20-2005 vwool: suspend/resume added
*
* 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
*
.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} }
};
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 int 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
*/
static void nand_release_device (struct mtd_info *mtd)
{
* 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)
* 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)
* @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)
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);
}
/**
- * 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
}
/**
- * 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
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
}
/**
- * 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
* @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)
{
/* 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);
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;
}
u_char buf[2] = {0, 0};
size_t retlen;
int block;
-
+
/* Get block number */
block = ((int) ofs) >> this->bbt_erase_shift;
if (this->bbt)
/* 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) & NAND_STATUS_WP) ? 0 : 1;
+ return (this->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
}
/**
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);
}
-/*
+/*
* Wait for the ready pin, after a command
* The timeout is catched later.
*/
if (this->dev_ready(mtd))
return;
touch_softlockup_watchdog();
- } while (time_before(jiffies, timeo));
+ } while (time_before(jiffies, timeo));
}
/**
/* 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:
return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (this->dev_ready)
break;
udelay(this->chip_delay);
this->hwcontrol(mtd, NAND_CTL_SETCLE);
while ( !(this->read_byte(mtd) & NAND_STATUS_READY));
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. */
column += mtd->oobblock;
command = NAND_CMD_READ0;
}
-
-
+
+
/* Begin command latch cycle */
this->hwcontrol(mtd, NAND_CTL_SETCLE);
/* Write out the command to the device. */
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));
/* 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, sequential in, and deplete1 need no delay
*/
switch (command) {
-
+
case NAND_CMD_CACHEDPROG:
case NAND_CMD_PAGEPROG:
case NAND_CMD_ERASE1:
case NAND_CMD_DEPLETE1:
return;
- /*
+ /*
* read error status commands require only a short delay
*/
case NAND_CMD_STATUS_ERROR:
return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (this->dev_ready)
break;
udelay(this->chip_delay);
this->hwcontrol(mtd, NAND_CTL_SETCLE);
/* 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
* 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
*/
* @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
*
*/
unsigned long timeo = jiffies;
int status;
-
+
if (state == FL_ERASING)
timeo += (HZ * 400) / 1000;
else
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;
*
* 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;
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);
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--) {
}
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 */
/* wait until cache is ready*/
// status = this->waitfunc (mtd, this, FL_CACHEDRPG);
}
- return 0;
+ return 0;
}
#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
* @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;
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] ) {
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
nand_wait_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;
}
* NAND read with ECC
*/
int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * oob_buf,
+ size_t * retlen, u_char * buf, u_char * oob_buf,
struct nand_oobinfo *oobsel, int flags)
{
/* 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;
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
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 ||
oob_data = &this->data_buf[end];
eccsteps = this->eccsteps;
-
+
switch (eccmode) {
case NAND_ECC_NONE: { /* No ECC, Read in a page */
static unsigned long lastwhinge = 0;
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) {
* does the error correction on the fly */
ecc_status = this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]);
if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
- 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 */
/* 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]];
/* 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) || (ecc_status > (flags && 0xff))) {
+
+ if ((ecc_status == -1) || (ecc_status > (flags && 0xff))) {
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 */
}
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
nand_wait_ready(mtd);
-
+
if (read == len)
- break;
+ break;
/* For subsequent reads align to page boundary. */
col = 0;
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 */
/* 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);
/* 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 !
*/
this->select_chip(mtd, -1);
this->select_chip(mtd, chipnr);
}
-
- /* 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
nand_wait_ready(mtd);
- /* 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);
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
nand_wait_ready(mtd);
-
- /* Check, if the chip supports auto page increment */
+
+ /* Check, if the chip supports auto page increment */
if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
sndcmd = 1;
}
}
-/**
- * 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
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;
{
return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL));
}
-
+
/**
* nand_write_ecc - [MTD Interface] NAND write with ECC
* @mtd: MTD device structure
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;
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;
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;
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++;
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;
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);
oob = 0;
/* Check, if we cross a chip boundary */
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:
/* 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;
*
* 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));
}
/**
*
* 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;
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;
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;
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;
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) {
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);
ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
if (ret)
goto out;
-
+
written += mtd->oobblock * numpages;
/* All done ? */
if (!count)
{
return nand_erase_nand (mtd, instr, 0);
}
-
+
#define BBT_PAGE_MASK 0xffffff3f
/**
* nand_erase_intern - [NAND Interface] erase block(s)
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 operation failed and additional status checks are available */
/* if BBT requires refresh, set the BBT rewrite flag to the page being erased */
if (this->options & BBT_AUTO_REFRESH) {
- if (((page & BBT_PAGE_MASK) == bbt_masked_page) &&
+ if (((page & BBT_PAGE_MASK) == bbt_masked_page) &&
(page != this->bbt_td->pages[chipnr])) {
rewrite_bbt[chipnr] = (page << this->page_shift);
}
}
-
+
/* Increment page address and decrement length */
len -= (1 << this->phys_erase_shift);
page += pages_per_block;
this->select_chip(mtd, -1);
this->select_chip(mtd, chipnr);
- /* if BBT requires refresh and BBT-PERCHIP,
+ /* if BBT requires refresh and BBT-PERCHIP,
* set the BBT page mask to see if this BBT should be rewritten */
if ((this->options & BBT_AUTO_REFRESH) && (this->bbt_td->options & NAND_BBT_PERCHIP)) {
bbt_masked_page = this->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
for (chipnr = 0; chipnr < this->numchips; chipnr++) {
if (rewrite_bbt[chipnr]) {
/* update the BBT for chip */
- DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
+ DEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt (%d:0x%0x 0x%0x)\n",
chipnr, rewrite_bbt[chipnr], this->bbt_td->pages[chipnr]);
nand_update_bbt (mtd, rewrite_bbt[chipnr]);
}
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);
}
/* 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;
extid >>= 2;
/* Get buswidth information */
busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
-
+
} else {
/* Old devices have this data hardcoded in the
* device id table */
* 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[maf_id].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 */
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;
/* Do not replace user supplied command function ! */
if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
this->cmdfunc = nand_command_lp;
-
+
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[maf_id].name , nand_flash_ids[i].name);
break;
}
}
if (i > 1)
printk(KERN_INFO "%d NAND chips detected\n", i);
-
+
/* Allocate buffers, if neccecary */
if (!this->oob_buf) {
size_t len;
}
this->options |= NAND_OOBBUF_ALLOC;
}
-
+
if (!this->data_buf) {
size_t len;
len = mtd->oobblock + mtd->oobsize;
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;
BUG();
}
}
-
+
/* The number of bytes available for the filesystem to place fs dependend
* oob data */
mtd->oobavail = 0;
for (i = 0; this->autooob->oobfree[i][1]; i++)
mtd->oobavail += this->autooob->oobfree[i][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) {
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;
default:
printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
- BUG();
- }
+ 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();
+ 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:
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;
}
-
+
/* Initialize state, waitqueue and spinlock */
this->state = FL_READY;
init_waitqueue_head (&this->wq);
memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
mtd->owner = THIS_MODULE;
-
+
/* Check, if we should skip the bad block table scan */
if (this->options & NAND_SKIP_BBTSCAN)
return 0;
}
/**
- * 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)
*
* Overview:
* Bad block table support for the NAND driver
- *
+ *
* Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de)
*
- * $Id: nand_bbt.c,v 1.35 2005/07/15 13:53:47 gleixner Exp $
+ * $Id: nand_bbt.c,v 1.36 2005/11/07 11:14:30 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
*
* 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
* 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 <linux/slab.h>
#include <linux/delay.h>
-/**
+/**
* check_pattern - [GENERIC] check if a pattern is in the buffer
* @buf: the buffer to search
* @len: the length of buffer to search
if (p[i] != 0xff)
return -1;
}
- }
+ }
p += end;
-
+
/* Compare the pattern */
for (i = 0; i < td->len; i++) {
if (p[i] != td->pattern[i])
return 0;
}
-/**
+/**
* check_short_pattern - [GENERIC] check if a pattern is in the buffer
* @buf: the buffer to search
* @td: search pattern descriptor
*
* Check for a pattern at the given place. Used to search bad block
- * tables and good / bad block identifiers. Same as check_pattern, but
+ * tables and good / bad block identifiers. Same as check_pattern, but
* no optional empty check
*
*/
* 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;
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);
return res;
}
printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n");
- }
+ }
/* Analyse data */
for (i = 0; i < len; i++) {
* 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;
* 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
*
* 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
{
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]);
}
else {
if (bd->options & NAND_BBT_SCAN2NDPAGE)
len = 2;
- else
+ else
len = 1;
}
numblocks += startblock;
from = startblock << (this->bbt_erase_shift - 1);
}
-
+
for (i = startblock; i < numblocks;) {
int ret;
-
+
if (bd->options & NAND_BBT_SCANEMPTY)
if ((ret = nand_read_raw (mtd, buf, from, readlen, ooblen)))
return ret;
for (j = 0; j < len; j++) {
if (!(bd->options & NAND_BBT_SCANEMPTY)) {
size_t retlen;
-
- /* Read the full oob until read_oob is fixed to
+
+ /* Read the full oob until read_oob is fixed to
* handle single byte reads for 16 bit buswidth */
ret = mtd->read_oob(mtd, from + j * mtd->oobblock,
mtd->oobsize, &retlen, buf);
if (check_short_pattern (buf, 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;
}
} else {
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;
}
* @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)
{
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;
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) {
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;
/* 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 {
} 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 ? */
} else {
startblock = chip * numblocks;
dir = 1;
- }
+ }
for (i = 0; i < td->maxblocks; i++) {
int block = startblock + dir * i;
}
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;
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 */
buf[len + td->veroffs] = td->version[chip];
}
}
-
+
/* walk through the memory table */
for (i = 0; i < numblocks; ) {
uint8_t dat;
dat >>= 2;
}
}
-
+
memset (&einfo, 0, sizeof (einfo));
einfo.mtd = mtd;
einfo.addr = (unsigned long) to;
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;
}
* @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 inline int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
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;
}
if (td->pages[i] == -1) {
- rd = md;
+ rd = md;
td->version[i] = md->version[i];
writeops = 1;
goto writecheck;
if (!(td->options & NAND_BBT_VERSION))
rd2 = md;
goto writecheck;
- }
+ }
if (((int8_t) (td->version[i] - md->version[i])) > 0) {
rd = td;
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);
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);
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
*
} 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;
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. */
* @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.
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
*
printk (KERN_ERR "nand_update_bbt: Out of memory\n");
return -ENOMEM;
}
-
+
writeops = md != NULL ? 0x03 : 0x01;
/* Do we have a bbt per chip ? */
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)) {
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. */
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
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,
};
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,
};
/**
- * 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
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;
}
}
/**
- * 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
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, block >> 1, res);
switch ((int)res) {
* Copyright (C) 2000-2004 Steven J. Hill (sjhill@realitydiluted.com)
* Toshiba America Electronics Components, Inc.
*
- * $Id: nand_ecc.c,v 1.14 2004/06/16 15:34:37 gleixner Exp $
+ * $Id: nand_ecc.c,v 1.15 2005/11/07 11:14:30 gleixner Exp $
*
* This file is free software; you can redistribute it and/or modify it
* 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
* 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.
*/
* 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
*/
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] */
b >>= 1;
a >>= 1;
}
-
+
/* Calculate second ECC byte */
b = 0x80;
for (i = 0; i < 4; i++) {
b >>= 1;
a >>= 1;
}
-
+
/* Store two of the ECC bytes */
ecc_code[0] = tmp1;
ecc_code[1] = tmp2;
{
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];
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;
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;
}
}
}
-
+
/* Should never happen */
return -1;
}
*
* Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de)
*
- * $Id: nand_ids.c,v 1.14 2005/06/23 09:38:50 gleixner Exp $
+ * $Id: nand_ids.c,v 1.16 2005/11/07 11:14:31 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <linux/mtd/nand.h>
/*
* 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},
{"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 1,8V 8-bit", 0x39, 512, 128, 0x4000, 0},
{"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0},
{"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16},
{"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16},
{"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-
+
{"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0},
/* These are the new chips with large page size. The pagesize
{"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
{"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
{"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
-
+
/* 1 Gigabit */
{"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
{"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
{"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},
{"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 | BBT_AUTO_REFRESH},
*
* Author: Artem B. Bityuckiy <dedekind@oktetlabs.ru>, <dedekind@infradead.org>
*
- * Copyright (C) 2004 Nokia Corporation
+ * Copyright (C) 2004 Nokia Corporation
*
* Note: NS means "NAND Simulator".
* Note: Input means input TO flash chip, output means output FROM chip.
/* The largest possible page size */
#define NS_LARGEST_PAGE_SIZE 2048
-
+
/* The prefix for simulator output */
#define NS_OUTPUT_PREFIX "[nandsim]"
do { if (do_delays) udelay(us); } while(0)
#define NS_MDELAY(us) \
do { if (do_delays) mdelay(us); } while(0)
-
+
/* Is the nandsim structure initialized ? */
#define NS_IS_INITIALIZED(ns) ((ns)->geom.totsz != 0)
#define NS_STATUS_OK(ns) (NAND_STATUS_READY | (NAND_STATUS_WP * ((ns)->lines.wp == 0)))
/* Operation failed completion status */
-#define NS_STATUS_FAILED(ns) (NAND_STATUS_FAIL | NS_STATUS_OK(ns))
+#define NS_STATUS_FAILED(ns) (NAND_STATUS_FAIL | NS_STATUS_OK(ns))
/* Calculate the page offset in flash RAM image by (row, column) address */
#define NS_RAW_OFFSET(ns) \
(((ns)->regs.row << (ns)->geom.pgshift) + ((ns)->regs.row * (ns)->geom.oobsz) + (ns)->regs.column)
-
+
/* Calculate the OOB offset in flash RAM image by (row, column) address */
#define NS_RAW_OFFSET_OOB(ns) (NS_RAW_OFFSET(ns) + ns->geom.pgsz)
/* Remove action bits ftom state */
#define NS_STATE(x) ((x) & ~ACTION_MASK)
-
-/*
+
+/*
* Maximum previous states which need to be saved. Currently saving is
* only needed for page programm operation with preceeded read command
* (which is only valid for 512-byte pages).
*/
#define NS_MAX_PREVSTATES 1
-/*
+/*
* The structure which describes all the internal simulator data.
*/
struct nandsim {
uint32_t options; /* chip's characteristic bits */
uint32_t state; /* current chip state */
uint32_t nxstate; /* next expected state */
-
+
uint32_t *op; /* current operation, NULL operations isn't known yet */
uint32_t pstates[NS_MAX_PREVSTATES]; /* previous states */
uint16_t npstates; /* number of previous states saved */
ns->geom.secaddrbytes = 3;
}
}
-
+
/* Detect how many ID bytes the NAND chip outputs */
for (i = 0; nand_flash_ids[i].name != NULL; i++) {
if (second_id_byte != nand_flash_ids[i].id)
#ifdef CONFIG_NS_ABS_POS
ns->mem.byte = ioremap(CONFIG_NS_ABS_POS, ns->geom.totszoob);
if (!ns->mem.byte) {
- NS_ERR("init_nandsim: failed to map the NAND flash image at address %p\n",
+ NS_ERR("init_nandsim: failed to map the NAND flash image at address %p\n",
(void *)CONFIG_NS_ABS_POS);
return -ENOMEM;
}
check_command(int cmd)
{
switch (cmd) {
-
+
case NAND_CMD_READ0:
case NAND_CMD_READSTART:
case NAND_CMD_PAGEPROG:
case NAND_CMD_RESET:
case NAND_CMD_READ1:
return 0;
-
+
case NAND_CMD_STATUS_MULTI:
default:
return 1;
accept_addr_byte(struct nandsim *ns, u_char bt)
{
uint byte = (uint)bt;
-
+
if (ns->regs.count < (ns->geom.pgaddrbytes - ns->geom.secaddrbytes))
ns->regs.column |= (byte << 8 * ns->regs.count);
else {
return;
}
-
+
/*
* Switch to STATE_READY state.
*/
-static inline void
+static inline void
switch_to_ready_state(struct nandsim *ns, u_char status)
{
NS_DBG("switch_to_ready_state: switch to %s state\n", get_state_name(STATE_READY));
* (for example program from the second half and read from the
* second half operations both begin with the READ1 command). In this
* case the ns->pstates[] array contains previous states.
- *
+ *
* Thus, the function tries to find operation containing the following
* states (if the 'flag' parameter is 0):
* ns->pstates[0], ... ns->pstates[ns->npstates], ns->state
* If (one and only one) matching operation is found, it is accepted (
* ns->ops, ns->state, ns->nxstate are initialized, ns->npstate is
* zeroed).
- *
+ *
* If there are several maches, the current state is pushed to the
* ns->pstates.
*
* In such situation the function is called with 'flag' != 0, and the
* operation is searched using the following pattern:
* ns->pstates[0], ... ns->pstates[ns->npstates], <address input>
- *
+ *
* It is supposed that this pattern must either match one operation on
* none. There can't be ambiguity in that case.
*
{
int opsfound = 0;
int i, j, idx = 0;
-
+
for (i = 0; i < NS_OPER_NUM; i++) {
int found = 1;
-
+
if (!(ns->options & ops[i].reqopts))
/* Ignore operations we can't perform */
continue;
-
+
if (flag) {
if (!(ops[i].states[ns->npstates] & STATE_ADDR_MASK))
continue;
continue;
}
- for (j = 0; j < ns->npstates; j++)
+ for (j = 0; j < ns->npstates; j++)
if (NS_STATE(ops[i].states[j]) != NS_STATE(ns->pstates[j])
&& (ns->options & ops[idx].reqopts)) {
found = 0;
/* Exact match */
ns->op = &ops[idx].states[0];
if (flag) {
- /*
+ /*
* In this case the find_operation function was
* called when address has just began input. But it isn't
* yet fully input and the current state must
idx, get_state_name(ns->state), get_state_name(ns->nxstate));
return 0;
}
-
+
if (opsfound == 0) {
/* Nothing was found. Try to ignore previous commands (if any) and search again */
if (ns->npstates != 0) {
switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
return -2;
}
-
+
if (flag) {
/* This shouldn't happen */
NS_DBG("find_operation: BUG, operation must be known if address is input\n");
return -2;
}
-
+
NS_DBG("find_operation: there is still ambiguity\n");
ns->pstates[ns->npstates++] = ns->state;
int busdiv = ns->busw == 8 ? 1 : 2;
action &= ACTION_MASK;
-
+
/* Check that page address input is correct */
if (action != ACTION_SECERASE && ns->regs.row >= ns->geom.pgnum) {
NS_WARN("do_state_action: wrong page number (%#x)\n", ns->regs.row);
NS_DBG("do_state_action: (ACTION_CPY:) copy %d bytes to int buf, raw offset %d\n",
num, NS_RAW_OFFSET(ns) + ns->regs.off);
-
+
if (ns->regs.off == 0)
NS_LOG("read page %d\n", ns->regs.row);
else if (ns->regs.off < ns->geom.pgsz)
NS_LOG("read page %d (second half)\n", ns->regs.row);
else
NS_LOG("read OOB of page %d\n", ns->regs.row);
-
+
NS_UDELAY(access_delay);
NS_UDELAY(input_cycle * ns->geom.pgsz / 1000 / busdiv);
/*
* Erase sector.
*/
-
+
if (ns->lines.wp) {
NS_ERR("do_state_action: device is write-protected, ignore sector erase\n");
return -1;
}
-
+
if (ns->regs.row >= ns->geom.pgnum - ns->geom.pgsec
|| (ns->regs.row & ~(ns->geom.secsz - 1))) {
NS_ERR("do_state_action: wrong sector address (%#x)\n", ns->regs.row);
return -1;
}
-
+
ns->regs.row = (ns->regs.row <<
8 * (ns->geom.pgaddrbytes - ns->geom.secaddrbytes)) | ns->regs.column;
ns->regs.column = 0;
-
+
NS_DBG("do_state_action: erase sector at address %#x, off = %d\n",
ns->regs.row, NS_RAW_OFFSET(ns));
NS_LOG("erase sector %d\n", ns->regs.row >> (ns->geom.secshift - ns->geom.pgshift));
memset(ns->mem.byte + NS_RAW_OFFSET(ns), 0xFF, ns->geom.secszoob);
-
+
NS_MDELAY(erase_delay);
-
+
break;
case ACTION_PRGPAGE:
NS_DBG("do_state_action: copy %d bytes from int buf to (%#x, %#x), raw off = %d\n",
num, ns->regs.row, ns->regs.column, NS_RAW_OFFSET(ns) + ns->regs.off);
NS_LOG("programm page %d\n", ns->regs.row);
-
+
NS_UDELAY(programm_delay);
NS_UDELAY(output_cycle * ns->geom.pgsz / 1000 / busdiv);
-
+
break;
-
+
case ACTION_ZEROOFF:
NS_DBG("do_state_action: set internal offset to 0\n");
ns->regs.off = 0;
NS_DBG("do_state_action: set internal offset to %d\n", ns->geom.pgsz);
ns->regs.off = ns->geom.pgsz;
break;
-
+
default:
NS_DBG("do_state_action: BUG! unknown action\n");
}
* The current operation have already been identified.
* Just follow the states chain.
*/
-
+
ns->stateidx += 1;
ns->state = ns->nxstate;
ns->nxstate = ns->op[ns->stateidx + 1];
switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
return;
}
-
+
} else {
/*
* We don't yet know which operation we perform.
* Try to identify it.
*/
- /*
+ /*
* The only event causing the switch_state function to
* be called with yet unknown operation is new command.
*/
*/
u_char status = NS_STATUS_OK(ns);
-
+
/* In case of data states, see if all bytes were input/output */
if ((ns->state & (STATE_DATAIN_MASK | STATE_DATAOUT_MASK))
&& ns->regs.count != ns->regs.num) {
ns->regs.num - ns->regs.count);
status = NS_STATUS_FAILED(ns);
}
-
+
NS_DBG("switch_state: operation complete, switch to STATE_READY state\n");
switch_to_ready_state(ns, status);
return;
} else if (ns->nxstate & (STATE_DATAIN_MASK | STATE_DATAOUT_MASK)) {
- /*
+ /*
* If the next state is data input/output, switch to it now
*/
-
+
ns->state = ns->nxstate;
ns->nxstate = ns->op[++ns->stateidx + 1];
ns->regs.num = ns->regs.count = 0;
case STATE_DATAOUT:
ns->regs.num = ns->geom.pgszoob - ns->regs.off - ns->regs.column;
break;
-
+
case STATE_DATAOUT_ID:
ns->regs.num = ns->geom.idbytes;
break;
-
+
case STATE_DATAOUT_STATUS:
case STATE_DATAOUT_STATUS_M:
ns->regs.count = ns->regs.num = 0;
break;
-
+
default:
NS_ERR("switch_state: BUG! unknown data state\n");
}
*/
ns->regs.count = 0;
-
+
switch (NS_STATE(ns->nxstate)) {
case STATE_ADDR_PAGE:
ns->regs.num = ns->geom.pgaddrbytes;
-
+
break;
case STATE_ADDR_SEC:
ns->regs.num = ns->geom.secaddrbytes;
break;
-
+
case STATE_ADDR_ZERO:
ns->regs.num = 1;
break;
NS_ERR("switch_state: BUG! unknown address state\n");
}
} else {
- /*
+ /*
* Just reset internal counters.
*/
default:
BUG();
}
-
+
if (ns->regs.count == ns->regs.num) {
NS_DBG("read_byte: all bytes were read\n");
}
else if (NS_STATE(ns->nxstate) == STATE_READY)
switch_state(ns);
-
+
}
-
+
return outb;
}
ns_nand_write_byte(struct mtd_info *mtd, u_char byte)
{
struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv;
-
+
/* Sanity and correctness checks */
if (!ns->lines.ce) {
NS_ERR("write_byte: chip is disabled, ignore write\n");
NS_ERR("write_byte: ALE and CLE pins are high simultaneously, ignore write\n");
return;
}
-
+
if (ns->lines.cle == 1) {
/*
* The byte written is a command.
return;
}
- /*
+ /*
* Chip might still be in STATE_DATAOUT
* (if OPT_AUTOINCR feature is supported), STATE_DATAOUT_STATUS or
* STATE_DATAOUT_STATUS_M state. If so, switch state.
"ignore previous states\n", (uint)byte, get_state_name(ns->nxstate));
switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
}
-
+
/* Check that the command byte is correct */
if (check_command(byte)) {
NS_ERR("write_byte: unknown command %#x\n", (uint)byte);
return;
}
-
+
NS_DBG("command byte corresponding to %s state accepted\n",
get_state_name(get_state_by_command(byte)));
ns->regs.command = byte;
if (find_operation(ns, 1) < 0)
return;
-
+
if ((ns->state & ACTION_MASK) && do_state_action(ns, ns->state) < 0) {
switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
return;
}
-
+
ns->regs.count = 0;
switch (NS_STATE(ns->nxstate)) {
case STATE_ADDR_PAGE:
switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
return;
}
-
+
/* Check if this is expected byte */
if (ns->regs.count == ns->regs.num) {
NS_ERR("write_byte: no more address bytes expected\n");
NS_DBG("address (%#x, %#x) is accepted\n", ns->regs.row, ns->regs.column);
switch_state(ns);
}
-
+
} else {
/*
* The byte written is an input data.
*/
-
+
/* Check that chip is expecting data input */
if (!(ns->state & STATE_DATAIN_MASK)) {
NS_ERR("write_byte: data input (%#x) isn't expected, state is %s, "
struct nand_chip *chip = (struct nand_chip *)mtd->priv;
NS_DBG("read_word\n");
-
+
return chip->read_byte(mtd) | (chip->read_byte(mtd) << 8);
}
ns_nand_write_word(struct mtd_info *mtd, uint16_t word)
{
struct nand_chip *chip = (struct nand_chip *)mtd->priv;
-
+
NS_DBG("write_word\n");
-
+
chip->write_byte(mtd, word & 0xFF);
chip->write_byte(mtd, word >> 8);
}
-static void
+static void
ns_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv;
memcpy(ns->buf.byte + ns->regs.count, buf, len);
ns->regs.count += len;
-
+
if (ns->regs.count == ns->regs.num) {
NS_DBG("write_buf: %d bytes were written\n", ns->regs.count);
}
}
-static void
+static void
ns_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
{
struct nandsim *ns = (struct nandsim *)((struct nand_chip *)mtd->priv)->priv;
memcpy(buf, ns->buf.byte + ns->regs.count, len);
ns->regs.count += len;
-
+
if (ns->regs.count == ns->regs.num) {
if ((ns->options & OPT_AUTOINCR) && NS_STATE(ns->state) == STATE_DATAOUT) {
ns->regs.count = 0;
else if (NS_STATE(ns->nxstate) == STATE_READY)
switch_state(ns);
}
-
+
return;
}
-static int
+static int
ns_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
{
ns_nand_read_buf(mtd, (u_char *)&ns_verify_buf[0], len);
NS_ERR("wrong bus width (%d), use only 8 or 16\n", bus_width);
return -EINVAL;
}
-
+
/* Allocate and initialize mtd_info, nand_chip and nandsim structures */
nsmtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip)
+ sizeof(struct nandsim), GFP_KERNEL);
chip = (struct nand_chip *)(nsmtd + 1);
nsmtd->priv = (void *)chip;
nand = (struct nandsim *)(chip + 1);
- chip->priv = (void *)nand;
+ chip->priv = (void *)nand;
/*
* Register simulator's callbacks.
chip->eccmode = NAND_ECC_SOFT;
chip->options |= NAND_SKIP_BBTSCAN;
- /*
+ /*
* Perform minimum nandsim structure initialization to handle
- * the initial ID read command correctly
+ * the initial ID read command correctly
*/
if (third_id_byte != 0xFF || fourth_id_byte != 0xFF)
nand->geom.idbytes = 4;
NS_ERR("scan_bbt: can't initialize the nandsim structure\n");
goto error;
}
-
+
if ((retval = nand_default_bbt(nsmtd)) != 0) {
free_nandsim(nand);
goto error;
* Derived from drivers/mtd/nand/edb7312.c
*
*
- * $Id: ppchameleonevb.c,v 1.6 2004/11/05 16:07:16 kalev Exp $
+ * $Id: ppchameleonevb.c,v 1.7 2005/11/07 11:14:31 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
out_be32((volatile unsigned*)GPIO0_TSRH, in_be32((volatile unsigned*)GPIO0_TSRH) & 0xFFFFFFF0);
out_be32((volatile unsigned*)GPIO0_TSRL, in_be32((volatile unsigned*)GPIO0_TSRL) & 0x3FFFFFFF);
/* enable output driver */
- out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN |
+ out_be32((volatile unsigned*)GPIO0_TCR, in_be32((volatile unsigned*)GPIO0_TCR) | NAND_EVB_nCE_GPIO_PIN |
NAND_EVB_CLE_GPIO_PIN | NAND_EVB_ALE_GPIO_PIN);
#ifdef USE_READY_BUSY_PIN
/* three-state select */
/* Release resources, unregister device(s) */
nand_release (ppchameleon_mtd);
nand_release (ppchameleonevb_mtd);
-
+
/* Release iomaps */
this = (struct nand_chip *) &ppchameleon_mtd[1];
iounmap((void *) this->IO_ADDR_R;
* drivers/mtd/nand/rtc_from4.c
*
* Copyright (C) 2004 Red Hat, Inc.
- *
+ *
* Derived from drivers/mtd/nand/spia.c
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
*
- * $Id: rtc_from4.c,v 1.9 2005/01/24 20:40:11 dmarlin Exp $
+ * $Id: rtc_from4.c,v 1.10 2005/11/07 11:14:31 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
*
* Overview:
* This is a device driver for the AG-AND flash device found on the
- * Renesas Technology Corp. Flash ROM 4-slot interface board (FROM_BOARD4),
- * which utilizes the Renesas HN29V1G91T-30 part.
+ * Renesas Technology Corp. Flash ROM 4-slot interface board (FROM_BOARD4),
+ * which utilizes the Renesas HN29V1G91T-30 part.
* This chip is a 1 GBibit (128MiB x 8 bits) AG-AND flash device.
*/
};
#define NUM_PARTITIONS 1
-/*
+/*
* hardware specific flash bbt decriptors
- * Note: this is to allow debugging by disabling
+ * Note: this is to allow debugging by disabling
* NAND_BBT_CREATE and/or NAND_BBT_WRITE
*
*/
/* the Reed Solomon control structure */
static struct rs_control *rs_decoder;
-/*
+/*
* hardware specific Out Of Band information
*/
static struct nand_oobinfo rtc_from4_nand_oobinfo = {
-/*
+/*
* rtc_from4_hwcontrol - hardware specific access to control-lines
* @mtd: MTD device structure
* @cmd: hardware control command
*
- * Address lines (A5 and A4) are used to control Command and Address Latch
+ * Address lines (A5 and A4) are used to control Command and Address Latch
* Enable on this board, so set the read/write address appropriately.
*
- * Chip Enable is also controlled by the Chip Select (CS5) and
+ * Chip Enable is also controlled by the Chip Select (CS5) and
* Address lines (A24-A22), so no action is required here.
*
*/
static void rtc_from4_hwcontrol(struct mtd_info *mtd, int cmd)
{
struct nand_chip* this = (struct nand_chip *) (mtd->priv);
-
+
switch(cmd) {
-
- case NAND_CTL_SETCLE:
+
+ case NAND_CTL_SETCLE:
this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_CLE);
break;
- case NAND_CTL_CLRCLE:
+ case NAND_CTL_CLRCLE:
this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_CLE);
break;
-
+
case NAND_CTL_SETALE:
this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W | RTC_FROM4_ALE);
break;
case NAND_CTL_CLRALE:
this->IO_ADDR_W = (void __iomem *)((unsigned long)this->IO_ADDR_W & ~RTC_FROM4_ALE);
break;
-
+
case NAND_CTL_SETNCE:
break;
case NAND_CTL_CLRNCE:
* @mtd: MTD device structure
* @chip: Chip to select (0 == slot 3, 1 == slot 4)
*
- * If there was a sudden loss of power during an erase operation, a
+ * If there was a sudden loss of power during an erase operation, a
* "device recovery" operation must be performed when power is restored
* to ensure correct operation. This routine performs the required steps
* for the requested chip.
while (!this->dev_ready(mtd));
this->select_chip(mtd, chip);
-
+
/* Send the commands for device recovery, phase 1 */
this->cmdfunc (mtd, NAND_CMD_DEPLETE1, 0x0000, 0x0000);
this->cmdfunc (mtd, NAND_CMD_DEPLETE2, -1, -1);
* @mtd: MTD device structure
* @mode: I/O mode; read or write
*
- * enable hardware ECC for data read or write
+ * enable hardware ECC for data read or write
*
*/
static void rtc_from4_enable_hwecc(struct mtd_info *mtd, int mode)
switch (mode) {
case NAND_ECC_READ :
- status = RTC_FROM4_RS_ECC_CTL_CLR
+ status = RTC_FROM4_RS_ECC_CTL_CLR
| RTC_FROM4_RS_ECC_CTL_FD_E;
*rs_ecc_ctl = status;
break;
case NAND_ECC_WRITE :
- status = RTC_FROM4_RS_ECC_CTL_CLR
- | RTC_FROM4_RS_ECC_CTL_GEN
+ status = RTC_FROM4_RS_ECC_CTL_CLR
+ | RTC_FROM4_RS_ECC_CTL_GEN
| RTC_FROM4_RS_ECC_CTL_FD_E;
*rs_ecc_ctl = status;
static int rtc_from4_correct_data(struct mtd_info *mtd, const u_char *buf, u_char *ecc1, u_char *ecc2)
{
int i, j, res;
- unsigned short status;
+ unsigned short status;
uint16_t par[6], syn[6];
uint8_t ecc[8];
volatile unsigned short *rs_ecc;
}
/* convert into 6 10bit syndrome fields */
- par[5] = rs_decoder->index_of[(((uint16_t)ecc[0] >> 0) & 0x0ff) |
+ par[5] = rs_decoder->index_of[(((uint16_t)ecc[0] >> 0) & 0x0ff) |
(((uint16_t)ecc[1] << 8) & 0x300)];
par[4] = rs_decoder->index_of[(((uint16_t)ecc[1] >> 2) & 0x03f) |
(((uint16_t)ecc[2] << 6) & 0x3c0)];
/* Let the library code do its magic.*/
res = decode_rs8(rs_decoder, (uint8_t *)buf, par, 512, syn, 0, NULL, 0xff, NULL);
if (res > 0) {
- DEBUG (MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: "
+ DEBUG (MTD_DEBUG_LEVEL0, "rtc_from4_correct_data: "
"ECC corrected %d errors on read\n", res);
}
return res;
* @state: state or the operation
* @status: status code returned from read status
* @page: startpage inside the chip, must be called with (page & this->pagemask)
- *
- * Perform additional error status checks on erase and write failures
- * to determine if errors are correctable. For this device, correctable
+ *
+ * Perform additional error status checks on erase and write failures
+ * to determine if errors are correctable. For this device, correctable
* 1-bit errors on erase and write are considered acceptable.
*
* note: see pages 34..37 of data sheet for details.
#ifdef RTC_FROM4_HWECC
/* 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
* 08-Jul-2005 BJD Fix OOPS when no platform data supplied
* 20-Oct-2005 BJD Fix timing calculation bug
*
- * $Id: s3c2410.c,v 1.18 2005/10/20 21:22:55 bjd Exp $
+ * $Id: s3c2410.c,v 1.20 2005/11/07 11:14:31 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
/* controller setup */
-static int s3c2410_nand_inithw(struct s3c2410_nand_info *info,
+static int s3c2410_nand_inithw(struct s3c2410_nand_info *info,
struct device *dev)
{
struct s3c2410_platform_nand *plat = to_nand_plat(dev);
twrph0 = 8;
twrph1 = 8;
}
-
+
if (tacls < 0 || twrph0 < 0 || twrph1 < 0) {
printk(KERN_ERR PFX "cannot get timings suitable for board\n");
return -EINVAL;
printk(KERN_INFO PFX "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n",
tacls, to_ns(tacls, clkrate),
- twrph0, to_ns(twrph0, clkrate),
+ twrph0, to_ns(twrph0, clkrate),
twrph1, to_ns(twrph1, clkrate));
if (!info->is_s3c2440) {
static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip)
{
struct s3c2410_nand_info *info;
- struct s3c2410_nand_mtd *nmtd;
+ struct s3c2410_nand_mtd *nmtd;
struct nand_chip *this = mtd->priv;
void __iomem *reg;
unsigned long cur;
writel(cur, reg);
}
-/* command and control functions
+/* command and control functions
*
* Note, these all use tglx's method of changing the IO_ADDR_W field
* to make the code simpler, and use the nand layer's code to issue the
static int s3c2410_nand_devready(struct mtd_info *mtd)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
-
+
if (info->is_s3c2440)
return readb(info->regs + S3C2440_NFSTAT) & S3C2440_NFSTAT_READY;
return readb(info->regs + S3C2410_NFSTAT) & S3C2410_NFSTAT_BUSY;
if (read_ecc[0] == calc_ecc[0] &&
read_ecc[1] == calc_ecc[1] &&
- read_ecc[2] == calc_ecc[2])
+ read_ecc[2] == calc_ecc[2])
return 0;
/* we curently have no method for correcting the error */
dev_set_drvdata(dev, NULL);
- if (info == NULL)
+ if (info == NULL)
return 0;
/* first thing we need to do is release all our mtds
* and their partitions, then go through freeing the
- * resources used
+ * resources used
*/
-
+
if (info->mtds != NULL) {
struct s3c2410_nand_mtd *ptr = info->mtds;
int mtdno;
/* s3c2410_nand_init_chip
*
- * init a single instance of an chip
+ * init a single instance of an chip
*/
static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
dev_err(dev, "cannot reserve register region\n");
err = -EIO;
goto exit_error;
- }
+ }
dev_dbg(dev, "mapped registers at %p\n", info->regs);
for (setno = 0; setno < nr_sets; setno++, nmtd++) {
pr_debug("initialising set %d (%p, info %p)\n",
setno, nmtd, info);
-
+
s3c2410_nand_init_chip(info, nmtd, sets);
nmtd->scan_res = nand_scan(&nmtd->mtd,
if (sets != NULL)
sets++;
}
-
+
pr_debug("initialised ok\n");
return 0;
*
* Copyright (C) 2004 Richard Purdie
*
- * $Id: sharpsl.c,v 1.6 2005/11/03 11:36:42 rpurdie Exp $
+ * $Id: sharpsl.c,v 1.7 2005/11/07 11:14:31 gleixner Exp $
*
* Based on Sharp's NAND driver sharp_sl.c
*
},
};
-/*
+/*
* hardware specific access to control-lines
*/
static void
sharpsl_nand_hwcontrol(struct mtd_info* mtd, int cmd)
{
switch (cmd) {
- case NAND_CTL_SETCLE:
+ case NAND_CTL_SETCLE:
writeb(readb(FLASHCTL) | FLCLE, FLASHCTL);
break;
case NAND_CTL_CLRCLE:
writeb(readb(FLASHCTL) & ~FLALE, FLASHCTL);
break;
- case NAND_CTL_SETNCE:
+ case NAND_CTL_SETNCE:
writeb(readb(FLASHCTL) & ~(FLCE0|FLCE1), FLASHCTL);
break;
- case NAND_CTL_CLRNCE:
+ case NAND_CTL_CLRNCE:
writeb(readb(FLASHCTL) | (FLCE0|FLCE1), FLASHCTL);
break;
}
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 24,
.eccpos = {
- 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
- 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+ 0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+ 0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
.oobfree = { {0x08, 0x09} }
};
printk ("Unable to allocate SharpSL NAND MTD device structure.\n");
return -ENOMEM;
}
-
+
/* map physical adress */
sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000);
if(!sharpsl_io_base){
kfree(sharpsl_mtd);
return -EIO;
}
-
+
/* Get pointer to private data */
this = (struct nand_chip *) (&sharpsl_mtd[1]);
this->chip_delay = 15;
/* set eccmode using hardware ECC */
this->eccmode = NAND_ECC_HW3_256;
- this->badblock_pattern = &sharpsl_bbt;
+ this->badblock_pattern = &sharpsl_bbt;
if (machine_is_akita() || machine_is_borzoi()) {
this->badblock_pattern = &sharpsl_akita_bbt;
this->autooob = &akita_oobinfo;
sharpsl_mtd->name = "sharpsl-nand";
nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes,
&sharpsl_partition_info, 0);
-
+
if (nr_partitions <= 0) {
nr_partitions = DEFAULT_NUM_PARTITIONS;
sharpsl_partition_info = sharpsl_nand_default_partition_info;
* to controllines (due to change in nand.c)
* page_cache added
*
- * $Id: spia.c,v 1.24 2004/11/04 12:53:10 gleixner Exp $
+ * $Id: spia.c,v 1.25 2005/11/07 11:14:31 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#define NUM_PARTITIONS 2
-/*
+/*
* hardware specific access to control-lines
*/
static void spia_hwcontrol(struct mtd_info *mtd, int cmd){
/* Set address of hardware control function */
this->hwcontrol = spia_hwcontrol;
/* 15 us command delay time */
- this->chip_delay = 15;
+ this->chip_delay = 15;
/* Scan to find existence of the device */
if (nand_scan (spia_mtd, 1)) {
* This is a device driver for the NAND flash device found on the
* TI fido board. It supports 32MiB and 64MiB cards
*
- * $Id: toto.c,v 1.4 2004/10/05 13:50:20 gleixner Exp $
+ * $Id: toto.c,v 1.5 2005/11/07 11:14:31 gleixner Exp $
*/
#include <linux/slab.h>
#endif
#define T_NAND_CTL_SETNCE(iob) gpiosetout(NAND_NCE, 0)
#define T_NAND_CTL_CLRNCE(iob) gpiosetout(NAND_NCE, NAND_NCE)
-
+
/*
* Define partitions for flash devices
*/
#define NUM_PARTITIONS32M 3
#define NUM_PARTITIONS64M 4
-/*
+/*
* hardware specific access to control-lines
*/
this->hwcontrol = toto_hwcontrol;
this->dev_ready = NULL;
/* 25 us command delay time */
- this->chip_delay = 30;
+ this->chip_delay = 30;
this->eccmode = NAND_ECC_SOFT;
/* Scan to find existance of the device */
/* Register the partitions */
switch(toto_mtd->size){
- case SZ_64M: add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); break;
- case SZ_32M: add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); break;
+ case SZ_64M: add_mtd_partitions(toto_mtd, partition_info64M, NUM_PARTITIONS64M); break;
+ case SZ_32M: add_mtd_partitions(toto_mtd, partition_info32M, NUM_PARTITIONS32M); break;
default: {
- printk (KERN_WARNING "Unsupported Nand device\n");
+ printk (KERN_WARNING "Unsupported Nand device\n");
err = -ENXIO;
goto out_buf;
}
archflashwp(0,0); /* open up flash for writing */
goto out;
-
+
out_buf:
- kfree (this->data_buf);
+ kfree (this->data_buf);
out_mtd:
kfree (toto_mtd);
out:
/* stop flash writes */
archflashwp(0,1);
-
+
/* release gpios to system */
gpiorelease(NAND_MASK);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff