Update MTD to that of Linux 2.6.22.1
A lot changed in the Linux MTD code, since it was last ported from
Linux to U-Boot. This patch takes U-Boot NAND support to the level
of Linux 2.6.22.1 and will enable support for very large NAND devices
(4KB pages) and ease the compatibility between U-Boot and Linux
filesystems.
This patch is tested on two custom boards with PPC and ARM
processors running YAFFS in U-Boot and Linux using gcc-4.1.2
cross compilers.
MAKEALL ppc/arm has some issues:
* DOC/OneNand/nand_spl is not building (I have not tried porting
these parts, and since I do not have any HW and I am not familiar
with this code/HW I think its best left to someone else.)
Except for the issues mentioned above, I have ported all drivers
necessary to run MAKEALL ppc/arm without errors and warnings. Many
drivers were trivial to port, but some were not so trivial. The
following drivers must be examined carefully and maybe rewritten to
some degree:
cpu/ppc4xx/ndfc.c
cpu/arm926ejs/davinci/nand.c
board/delta/nand.c
board/zylonite/nand.c
Signed-off-by: William Juul <william.juul@tandberg.com>
Signed-off-by: Stig Olsen <stig.olsen@tandberg.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index fdd85c1..a03f982 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -16,7 +16,7 @@
*
* Interface to generic NAND code for M-Systems DiskOnChip devices
*
- * $Id: diskonchip.c,v 1.45 2005/01/05 18:05:14 dwmw2 Exp $
+ * $Id: diskonchip.c,v 1.55 2005/11/07 11:14:30 gleixner Exp $
*/
#include <common.h>
@@ -39,13 +39,13 @@
#include <linux/mtd/inftl.h>
/* Where to look for the devices? */
-#ifndef CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS
-#define CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS 0
+#ifndef CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS
+#define CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS 0
#endif
static unsigned long __initdata doc_locations[] = {
#if defined (__alpha__) || defined(__i386__) || defined(__x86_64__)
-#ifdef CONFIG_MTD_DISKONCHIP_PROBE_HIGH
+#ifdef CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH
0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000,
0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
@@ -65,7 +65,7 @@
0xff000000,
#elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C)
0xff000000,
-##else
+#else
#warning Unknown architecture for DiskOnChip. No default probe locations defined
#endif
0xffffffff };
@@ -77,7 +77,7 @@
unsigned long physadr;
u_char ChipID;
u_char CDSNControl;
- int chips_per_floor; /* The number of chips detected on each floor */
+ int chips_per_floor; /* The number of chips detected on each floor */
int curfloor;
int curchip;
int mh0_page;
@@ -85,14 +85,10 @@
struct mtd_info *nextdoc;
};
-/* Max number of eraseblocks to scan (from start of device) for the (I)NFTL
- MediaHeader. The spec says to just keep going, I think, but that's just
- silly. */
-#define MAX_MEDIAHEADER_SCAN 8
-
/* This is the syndrome computed by the HW ecc generator upon reading an empty
page, one with all 0xff for data and stored ecc code. */
static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a };
+
/* This is the ecc value computed by the HW ecc generator upon writing an empty
page, one with all 0xff for data. */
static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 };
@@ -103,35 +99,36 @@
#define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil)
#define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k)
-static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd);
+static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int bitmask);
static void doc200x_select_chip(struct mtd_info *mtd, int chip);
-static int debug=0;
+static int debug = 0;
module_param(debug, int, 0);
-static int try_dword=1;
+static int try_dword = 1;
module_param(try_dword, int, 0);
-static int no_ecc_failures=0;
+static int no_ecc_failures = 0;
module_param(no_ecc_failures, int, 0);
-#ifdef CONFIG_MTD_PARTITIONS
-static int no_autopart=0;
+static int no_autopart = 0;
module_param(no_autopart, int, 0);
-#endif
-#ifdef MTD_NAND_DISKONCHIP_BBTWRITE
-static int inftl_bbt_write=1;
+static int show_firmware_partition = 0;
+module_param(show_firmware_partition, int, 0);
+
+#ifdef CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE
+static int inftl_bbt_write = 1;
#else
-static int inftl_bbt_write=0;
+static int inftl_bbt_write = 0;
#endif
module_param(inftl_bbt_write, int, 0);
-static unsigned long doc_config_location = CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS;
+static unsigned long doc_config_location = CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS;
module_param(doc_config_location, ulong, 0);
MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip");
-
/* Sector size for HW ECC */
#define SECTOR_SIZE 512
/* The sector bytes are packed into NB_DATA 10 bit words */
@@ -155,7 +152,7 @@
* some comments, improved a minor bit and converted it to make use
* of the generic Reed-Solomon libary. tglx
*/
-static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
+static int doc_ecc_decode(struct rs_control *rs, uint8_t *data, uint8_t *ecc)
{
int i, j, nerr, errpos[8];
uint8_t parity;
@@ -176,11 +173,11 @@
* s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0]
* where x = alpha^(FCR + i)
*/
- for(j = 1; j < NROOTS; j++) {
- if(ds[j] == 0)
+ for (j = 1; j < NROOTS; j++) {
+ if (ds[j] == 0)
continue;
tmp = rs->index_of[ds[j]];
- for(i = 0; i < NROOTS; i++)
+ for (i = 0; i < NROOTS; i++)
s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)];
}
@@ -201,7 +198,7 @@
* but they are given by the design of the de/encoder circuit
* in the DoC ASIC's.
*/
- for(i = 0;i < nerr; i++) {
+ for (i = 0; i < nerr; i++) {
int index, bitpos, pos = 1015 - errpos[i];
uint8_t val;
if (pos >= NB_DATA && pos < 1019)
@@ -213,8 +210,7 @@
can be modified since pos is even */
index = (pos >> 3) ^ 1;
bitpos = pos & 7;
- if ((index >= 0 && index < SECTOR_SIZE) ||
- index == (SECTOR_SIZE + 1)) {
+ if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) {
val = (uint8_t) (errval[i] >> (2 + bitpos));
parity ^= val;
if (index < SECTOR_SIZE)
@@ -224,9 +220,8 @@
bitpos = (bitpos + 10) & 7;
if (bitpos == 0)
bitpos = 8;
- if ((index >= 0 && index < SECTOR_SIZE) ||
- index == (SECTOR_SIZE + 1)) {
- val = (uint8_t)(errval[i] << (8 - bitpos));
+ if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) {
+ val = (uint8_t) (errval[i] << (8 - bitpos));
parity ^= val;
if (index < SECTOR_SIZE)
data[index] ^= val;
@@ -261,7 +256,8 @@
void __iomem *docptr = doc->virtadr;
unsigned long timeo = jiffies + (HZ * 10);
- if(debug) printk("_DoC_WaitReady...\n");
+ if (debug)
+ printk("_DoC_WaitReady...\n");
/* Out-of-line routine to wait for chip response */
if (DoC_is_MillenniumPlus(doc)) {
while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
@@ -306,7 +302,8 @@
DoC_Delay(doc, 2);
}
- if(debug) printk("DoC_WaitReady OK\n");
+ if (debug)
+ printk("DoC_WaitReady OK\n");
return ret;
}
@@ -316,7 +313,8 @@
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
- if(debug)printk("write_byte %02x\n", datum);
+ if (debug)
+ printk("write_byte %02x\n", datum);
WriteDOC(datum, docptr, CDSNSlowIO);
WriteDOC(datum, docptr, 2k_CDSN_IO);
}
@@ -331,37 +329,39 @@
ReadDOC(docptr, CDSNSlowIO);
DoC_Delay(doc, 2);
ret = ReadDOC(docptr, 2k_CDSN_IO);
- if (debug) printk("read_byte returns %02x\n", ret);
+ if (debug)
+ printk("read_byte returns %02x\n", ret);
return ret;
}
-static void doc2000_writebuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static void doc2000_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- if (debug)printk("writebuf of %d bytes: ", len);
- for (i=0; i < len; i++) {
+ if (debug)
+ printk("writebuf of %d bytes: ", len);
+ for (i = 0; i < len; i++) {
WriteDOC_(buf[i], docptr, DoC_2k_CDSN_IO + i);
if (debug && i < 16)
printk("%02x ", buf[i]);
}
- if (debug) printk("\n");
+ if (debug)
+ printk("\n");
}
-static void doc2000_readbuf(struct mtd_info *mtd,
- u_char *buf, int len)
+static void doc2000_readbuf(struct mtd_info *mtd, u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- if (debug)printk("readbuf of %d bytes: ", len);
+ if (debug)
+ printk("readbuf of %d bytes: ", len);
- for (i=0; i < len; i++) {
+ for (i = 0; i < len; i++) {
buf[i] = ReadDOC(docptr, 2k_CDSN_IO + i);
}
}
@@ -374,28 +374,28 @@
void __iomem *docptr = doc->virtadr;
int i;
- if (debug) printk("readbuf_dword of %d bytes: ", len);
+ if (debug)
+ printk("readbuf_dword of %d bytes: ", len);
- if (unlikely((((unsigned long)buf)|len) & 3)) {
- for (i=0; i < len; i++) {
- *(uint8_t *)(&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i);
+ if (unlikely((((unsigned long)buf) | len) & 3)) {
+ for (i = 0; i < len; i++) {
+ *(uint8_t *) (&buf[i]) = ReadDOC(docptr, 2k_CDSN_IO + i);
}
} else {
- for (i=0; i < len; i+=4) {
- *(uint32_t*)(&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i);
+ for (i = 0; i < len; i += 4) {
+ *(uint32_t*) (&buf[i]) = readl(docptr + DoC_2k_CDSN_IO + i);
}
}
}
-static int doc2000_verifybuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static int doc2000_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- for (i=0; i < len; i++)
+ for (i = 0; i < len; i++)
if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO))
return -EFAULT;
return 0;
@@ -408,12 +408,15 @@
uint16_t ret;
doc200x_select_chip(mtd, nr);
- doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
- this->write_byte(mtd, NAND_CMD_READID);
- doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
- doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
- this->write_byte(mtd, 0);
- doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
+ doc200x_hwcontrol(mtd, NAND_CMD_READID,
+ NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+ doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
+ doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+
+ /* We cant' use dev_ready here, but at least we wait for the
+ * command to complete
+ */
+ udelay(50);
ret = this->read_byte(mtd) << 8;
ret |= this->read_byte(mtd);
@@ -426,12 +429,13 @@
} ident;
void __iomem *docptr = doc->virtadr;
- doc200x_hwcontrol(mtd, NAND_CTL_SETCLE);
- doc2000_write_byte(mtd, NAND_CMD_READID);
- doc200x_hwcontrol(mtd, NAND_CTL_CLRCLE);
- doc200x_hwcontrol(mtd, NAND_CTL_SETALE);
- doc2000_write_byte(mtd, 0);
- doc200x_hwcontrol(mtd, NAND_CTL_CLRALE);
+ doc200x_hwcontrol(mtd, NAND_CMD_READID,
+ NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+ doc200x_hwcontrol(mtd, 0, NAND_CTRL_ALE | NAND_CTRL_CHANGE);
+ doc200x_hwcontrol(mtd, NAND_CMD_NONE,
+ NAND_NCE | NAND_CTRL_CHANGE);
+
+ udelay(50);
ident.dword = readl(docptr + DoC_2k_CDSN_IO);
if (((ident.byte[0] << 8) | ident.byte[1]) == ret) {
@@ -465,7 +469,7 @@
printk(KERN_DEBUG "Detected %d chips per floor.\n", i);
}
-static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int doc200x_wait(struct mtd_info *mtd, struct nand_chip *this)
{
struct doc_priv *doc = this->priv;
@@ -496,30 +500,28 @@
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
- /*ReadDOC(docptr, CDSNSlowIO); */
+ //ReadDOC(docptr, CDSNSlowIO);
/* 11.4.5 -- delay twice to allow extended length cycle */
DoC_Delay(doc, 2);
ReadDOC(docptr, ReadPipeInit);
- /*return ReadDOC(docptr, Mil_CDSN_IO); */
+ //return ReadDOC(docptr, Mil_CDSN_IO);
return ReadDOC(docptr, LastDataRead);
}
-static void doc2001_writebuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static void doc2001_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- for (i=0; i < len; i++)
+ for (i = 0; i < len; i++)
WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
/* Terminate write pipeline */
WriteDOC(0x00, docptr, WritePipeTerm);
}
-static void doc2001_readbuf(struct mtd_info *mtd,
- u_char *buf, int len)
+static void doc2001_readbuf(struct mtd_info *mtd, u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -529,15 +531,14 @@
/* Start read pipeline */
ReadDOC(docptr, ReadPipeInit);
- for (i=0; i < len-1; i++)
+ for (i = 0; i < len - 1; i++)
buf[i] = ReadDOC(docptr, Mil_CDSN_IO + (i & 0xff));
/* Terminate read pipeline */
buf[i] = ReadDOC(docptr, LastDataRead);
}
-static int doc2001_verifybuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static int doc2001_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -547,7 +548,7 @@
/* Start read pipeline */
ReadDOC(docptr, ReadPipeInit);
- for (i=0; i < len-1; i++)
+ for (i = 0; i < len - 1; i++)
if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
ReadDOC(docptr, LastDataRead);
return i;
@@ -567,81 +568,84 @@
ReadDOC(docptr, Mplus_ReadPipeInit);
ReadDOC(docptr, Mplus_ReadPipeInit);
ret = ReadDOC(docptr, Mplus_LastDataRead);
- if (debug) printk("read_byte returns %02x\n", ret);
+ if (debug)
+ printk("read_byte returns %02x\n", ret);
return ret;
}
-static void doc2001plus_writebuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static void doc2001plus_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- if (debug)printk("writebuf of %d bytes: ", len);
- for (i=0; i < len; i++) {
+ if (debug)
+ printk("writebuf of %d bytes: ", len);
+ for (i = 0; i < len; i++) {
WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
if (debug && i < 16)
printk("%02x ", buf[i]);
}
- if (debug) printk("\n");
+ if (debug)
+ printk("\n");
}
-static void doc2001plus_readbuf(struct mtd_info *mtd,
- u_char *buf, int len)
+static void doc2001plus_readbuf(struct mtd_info *mtd, u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- if (debug)printk("readbuf of %d bytes: ", len);
+ if (debug)
+ printk("readbuf of %d bytes: ", len);
/* Start read pipeline */
ReadDOC(docptr, Mplus_ReadPipeInit);
ReadDOC(docptr, Mplus_ReadPipeInit);
- for (i=0; i < len-2; i++) {
+ for (i = 0; i < len - 2; i++) {
buf[i] = ReadDOC(docptr, Mil_CDSN_IO);
if (debug && i < 16)
printk("%02x ", buf[i]);
}
/* Terminate read pipeline */
- buf[len-2] = ReadDOC(docptr, Mplus_LastDataRead);
+ buf[len - 2] = ReadDOC(docptr, Mplus_LastDataRead);
if (debug && i < 16)
- printk("%02x ", buf[len-2]);
- buf[len-1] = ReadDOC(docptr, Mplus_LastDataRead);
+ printk("%02x ", buf[len - 2]);
+ buf[len - 1] = ReadDOC(docptr, Mplus_LastDataRead);
if (debug && i < 16)
- printk("%02x ", buf[len-1]);
- if (debug) printk("\n");
+ printk("%02x ", buf[len - 1]);
+ if (debug)
+ printk("\n");
}
-static int doc2001plus_verifybuf(struct mtd_info *mtd,
- const u_char *buf, int len)
+static int doc2001plus_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
int i;
- if (debug)printk("verifybuf of %d bytes: ", len);
+ if (debug)
+ printk("verifybuf of %d bytes: ", len);
/* Start read pipeline */
ReadDOC(docptr, Mplus_ReadPipeInit);
ReadDOC(docptr, Mplus_ReadPipeInit);
- for (i=0; i < len-2; i++)
+ for (i = 0; i < len - 2; i++)
if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
ReadDOC(docptr, Mplus_LastDataRead);
ReadDOC(docptr, Mplus_LastDataRead);
return i;
}
- if (buf[len-2] != ReadDOC(docptr, Mplus_LastDataRead))
- return len-2;
- if (buf[len-1] != ReadDOC(docptr, Mplus_LastDataRead))
- return len-1;
+ if (buf[len - 2] != ReadDOC(docptr, Mplus_LastDataRead))
+ return len - 2;
+ if (buf[len - 1] != ReadDOC(docptr, Mplus_LastDataRead))
+ return len - 1;
return 0;
}
@@ -652,7 +656,8 @@
void __iomem *docptr = doc->virtadr;
int floor = 0;
- if(debug)printk("select chip (%d)\n", chip);
+ if (debug)
+ printk("select chip (%d)\n", chip);
if (chip == -1) {
/* Disable flash internally */
@@ -661,7 +666,7 @@
}
floor = chip / doc->chips_per_floor;
- chip -= (floor * doc->chips_per_floor);
+ chip -= (floor * doc->chips_per_floor);
/* Assert ChipEnable and deassert WriteProtect */
WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect);
@@ -678,65 +683,54 @@
void __iomem *docptr = doc->virtadr;
int floor = 0;
- if(debug)printk("select chip (%d)\n", chip);
+ if (debug)
+ printk("select chip (%d)\n", chip);
if (chip == -1)
return;
floor = chip / doc->chips_per_floor;
- chip -= (floor * doc->chips_per_floor);
+ chip -= (floor * doc->chips_per_floor);
/* 11.4.4 -- deassert CE before changing chip */
- doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE);
+ doc200x_hwcontrol(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE);
WriteDOC(floor, docptr, FloorSelect);
WriteDOC(chip, docptr, CDSNDeviceSelect);
- doc200x_hwcontrol(mtd, NAND_CTL_SETNCE);
+ doc200x_hwcontrol(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
doc->curchip = chip;
doc->curfloor = floor;
}
-static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd)
+#define CDSN_CTRL_MSK (CDSN_CTRL_CE | CDSN_CTRL_CLE | CDSN_CTRL_ALE)
+
+static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
- switch(cmd) {
- case NAND_CTL_SETNCE:
- doc->CDSNControl |= CDSN_CTRL_CE;
- break;
- case NAND_CTL_CLRNCE:
- doc->CDSNControl &= ~CDSN_CTRL_CE;
- break;
- case NAND_CTL_SETCLE:
- doc->CDSNControl |= CDSN_CTRL_CLE;
- break;
- case NAND_CTL_CLRCLE:
- doc->CDSNControl &= ~CDSN_CTRL_CLE;
- break;
- case NAND_CTL_SETALE:
- doc->CDSNControl |= CDSN_CTRL_ALE;
- break;
- case NAND_CTL_CLRALE:
- doc->CDSNControl &= ~CDSN_CTRL_ALE;
- break;
- case NAND_CTL_SETWP:
- doc->CDSNControl |= CDSN_CTRL_WP;
- break;
- case NAND_CTL_CLRWP:
- doc->CDSNControl &= ~CDSN_CTRL_WP;
- break;
+ if (ctrl & NAND_CTRL_CHANGE) {
+ doc->CDSNControl &= ~CDSN_CTRL_MSK;
+ doc->CDSNControl |= ctrl & CDSN_CTRL_MSK;
+ if (debug)
+ printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl);
+ WriteDOC(doc->CDSNControl, docptr, CDSNControl);
+ /* 11.4.3 -- 4 NOPs after CSDNControl write */
+ DoC_Delay(doc, 4);
}
- if (debug)printk("hwcontrol(%d): %02x\n", cmd, doc->CDSNControl);
- WriteDOC(doc->CDSNControl, docptr, CDSNControl);
- /* 11.4.3 -- 4 NOPs after CSDNControl write */
- DoC_Delay(doc, 4);
+ if (cmd != NAND_CMD_NONE) {
+ if (DoC_is_2000(doc))
+ doc2000_write_byte(mtd, cmd);
+ else
+ doc2001_write_byte(mtd, cmd);
+ }
}
-static void doc2001plus_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int column, int page_addr)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -757,9 +751,9 @@
if (command == NAND_CMD_SEQIN) {
int readcmd;
- if (column >= mtd->oobblock) {
+ if (column >= mtd->writesize) {
/* OOB area */
- column -= mtd->oobblock;
+ column -= mtd->writesize;
readcmd = NAND_CMD_READOOB;
} else if (column < 256) {
/* First 256 bytes --> READ0 */
@@ -783,25 +777,26 @@
WriteDOC(column, docptr, Mplus_FlashAddress);
}
if (page_addr != -1) {
- WriteDOC((unsigned char) (page_addr & 0xff), docptr, Mplus_FlashAddress);
- WriteDOC((unsigned char) ((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
+ WriteDOC((unsigned char)(page_addr & 0xff), docptr, Mplus_FlashAddress);
+ WriteDOC((unsigned char)((page_addr >> 8) & 0xff), docptr, Mplus_FlashAddress);
/* One more address cycle for higher density devices */
if (this->chipsize & 0x0c000000) {
- WriteDOC((unsigned char) ((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
+ WriteDOC((unsigned char)((page_addr >> 16) & 0x0f), docptr, Mplus_FlashAddress);
printk("high density\n");
}
}
WriteDOC(0, docptr, Mplus_WritePipeTerm);
WriteDOC(0, docptr, Mplus_WritePipeTerm);
/* deassert ALE */
- if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 || command == NAND_CMD_READOOB || command == NAND_CMD_READID)
+ if (command == NAND_CMD_READ0 || command == NAND_CMD_READ1 ||
+ command == NAND_CMD_READOOB || command == NAND_CMD_READID)
WriteDOC(0, docptr, Mplus_FlashControl);
}
/*
* program and erase have their own busy handlers
* status and sequential in needs no delay
- */
+ */
switch (command) {
case NAND_CMD_PAGEPROG:
@@ -818,26 +813,26 @@
WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd);
WriteDOC(0, docptr, Mplus_WritePipeTerm);
WriteDOC(0, docptr, Mplus_WritePipeTerm);
- while ( !(this->read_byte(mtd) & 0x40));
+ while (!(this->read_byte(mtd) & 0x40)) ;
return;
- /* This applies to read commands */
+ /* This applies to read commands */
default:
/*
* If we don't have access to the busy pin, we apply the given
* command delay
- */
+ */
if (!this->dev_ready) {
- udelay (this->chip_delay);
+ udelay(this->chip_delay);
return;
}
}
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
- ndelay (100);
+ ndelay(100);
/* wait until command is processed */
- while (!this->dev_ready(mtd));
+ while (!this->dev_ready(mtd)) ;
}
static int doc200x_dev_ready(struct mtd_info *mtd)
@@ -850,23 +845,25 @@
/* 11.4.2 -- must NOP four times before checking FR/B# */
DoC_Delay(doc, 4);
if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
- if(debug)
+ if (debug)
printk("not ready\n");
return 0;
}
- if (debug)printk("was ready\n");
+ if (debug)
+ printk("was ready\n");
return 1;
} else {
/* 11.4.2 -- must NOP four times before checking FR/B# */
DoC_Delay(doc, 4);
if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
- if(debug)
+ if (debug)
printk("not ready\n");
return 0;
}
/* 11.4.2 -- Must NOP twice if it's ready */
DoC_Delay(doc, 2);
- if (debug)printk("was ready\n");
+ if (debug)
+ printk("was ready\n");
return 1;
}
}
@@ -885,7 +882,7 @@
void __iomem *docptr = doc->virtadr;
/* Prime the ECC engine */
- switch(mode) {
+ switch (mode) {
case NAND_ECC_READ:
WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
WriteDOC(DOC_ECC_EN, docptr, ECCConf);
@@ -904,7 +901,7 @@
void __iomem *docptr = doc->virtadr;
/* Prime the ECC engine */
- switch(mode) {
+ switch (mode) {
case NAND_ECC_READ:
WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
@@ -917,8 +914,7 @@
}
/* This code is only called on write */
-static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
- unsigned char *ecc_code)
+static int doc200x_calculate_ecc(struct mtd_info *mtd, const u_char *dat, unsigned char *ecc_code)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -962,7 +958,8 @@
often. It could be optimized away by examining the data in
the writebuf routine, and remembering the result. */
for (i = 0; i < 512; i++) {
- if (dat[i] == 0xff) continue;
+ if (dat[i] == 0xff)
+ continue;
emptymatch = 0;
break;
}
@@ -970,17 +967,20 @@
/* If emptymatch still =1, we do have an all-0xff data buffer.
Return all-0xff ecc value instead of the computed one, so
it'll look just like a freshly-erased page. */
- if (emptymatch) memset(ecc_code, 0xff, 6);
+ if (emptymatch)
+ memset(ecc_code, 0xff, 6);
#endif
return 0;
}
-static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc)
+static int doc200x_correct_data(struct mtd_info *mtd, u_char *dat,
+ u_char *read_ecc, u_char *isnull)
{
int i, ret = 0;
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
void __iomem *docptr = doc->virtadr;
+ uint8_t calc_ecc[6];
volatile u_char dummy;
int emptymatch = 1;
@@ -1013,18 +1013,20 @@
all-0xff data and stored ecc block. Check the stored ecc. */
if (emptymatch) {
for (i = 0; i < 6; i++) {
- if (read_ecc[i] == 0xff) continue;
+ if (read_ecc[i] == 0xff)
+ continue;
emptymatch = 0;
break;
}
}
/* If emptymatch still =1, check the data block. */
if (emptymatch) {
- /* Note: this somewhat expensive test should not be triggered
- often. It could be optimized away by examining the data in
- the readbuf routine, and remembering the result. */
+ /* Note: this somewhat expensive test should not be triggered
+ often. It could be optimized away by examining the data in
+ the readbuf routine, and remembering the result. */
for (i = 0; i < 512; i++) {
- if (dat[i] == 0xff) continue;
+ if (dat[i] == 0xff)
+ continue;
emptymatch = 0;
break;
}
@@ -1033,7 +1035,8 @@
erased block, in which case the ECC will not come out right.
We'll suppress the error and tell the caller everything's
OK. Because it is. */
- if (!emptymatch) ret = doc_ecc_decode (rs_decoder, dat, calc_ecc);
+ 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);
}
@@ -1048,13 +1051,22 @@
return ret;
}
-/*u_char mydatabuf[528]; */
+//u_char mydatabuf[528];
-static struct nand_oobinfo doc200x_oobinfo = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+/* The strange out-of-order .oobfree list below is a (possibly unneeded)
+ * attempt to retain compatibility. It used to read:
+ * .oobfree = { {8, 8} }
+ * Since that leaves two bytes unusable, it was changed. But the following
+ * scheme might affect existing jffs2 installs by moving the cleanmarker:
+ * .oobfree = { {6, 10} }
+ * jffs2 seems to handle the above gracefully, but the current scheme seems
+ * safer. The only problem with it is that any code that parses oobfree must
+ * be able to handle out-of-order segments.
+ */
+static struct nand_ecclayout doc200x_oobinfo = {
.eccbytes = 6,
.eccpos = {0, 1, 2, 3, 4, 5},
- .oobfree = { {8, 8} }
+ .oobfree = {{8, 8}, {6, 2}}
};
/* Find the (I)NFTL Media Header, and optionally also the mirror media header.
@@ -1063,28 +1075,28 @@
either "ANAND" or "BNAND". If findmirror=1, also look for the mirror media
header. The page #s of the found media headers are placed in mh0_page and
mh1_page in the DOC private structure. */
-static int __init find_media_headers(struct mtd_info *mtd, u_char *buf,
- const char *id, int findmirror)
+static int __init find_media_headers(struct mtd_info *mtd, u_char *buf, const char *id, int findmirror)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
- unsigned offs, end = (MAX_MEDIAHEADER_SCAN << this->phys_erase_shift);
+ unsigned offs;
int ret;
size_t retlen;
- end = min(end, mtd->size); /* paranoia */
- for (offs = 0; offs < end; offs += mtd->erasesize) {
- ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
- if (retlen != mtd->oobblock) continue;
+ for (offs = 0; offs < mtd->size; offs += mtd->erasesize) {
+ ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+ if (retlen != mtd->writesize)
+ continue;
if (ret) {
- printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n",
- offs);
+ printk(KERN_WARNING "ECC error scanning DOC at 0x%x\n", offs);
}
- if (memcmp(buf, id, 6)) continue;
+ if (memcmp(buf, id, 6))
+ continue;
printk(KERN_INFO "Found DiskOnChip %s Media Header at 0x%x\n", id, offs);
if (doc->mh0_page == -1) {
doc->mh0_page = offs >> this->page_shift;
- if (!findmirror) return 1;
+ if (!findmirror)
+ return 1;
continue;
}
doc->mh1_page = offs >> this->page_shift;
@@ -1097,8 +1109,8 @@
/* Only one mediaheader was found. We want buf to contain a
mediaheader on return, so we'll have to re-read the one we found. */
offs = doc->mh0_page << this->page_shift;
- ret = mtd->read(mtd, offs, mtd->oobblock, &retlen, buf);
- if (retlen != mtd->oobblock) {
+ ret = mtd->read(mtd, offs, mtd->writesize, &retlen, buf);
+ if (retlen != mtd->writesize) {
/* Insanity. Give up. */
printk(KERN_ERR "Read DiskOnChip Media Header once, but can't reread it???\n");
return 0;
@@ -1106,8 +1118,7 @@
return 1;
}
-static inline int __init nftl_partscan(struct mtd_info *mtd,
- struct mtd_partition *parts)
+static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -1115,19 +1126,23 @@
u_char *buf;
struct NFTLMediaHeader *mh;
const unsigned psize = 1 << this->page_shift;
+ int numparts = 0;
unsigned blocks, maxblocks;
int offs, numheaders;
- buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+ buf = kmalloc(mtd->writesize, GFP_KERNEL);
if (!buf) {
printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
return 0;
}
- if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) goto out;
- mh = (struct NFTLMediaHeader *) buf;
+ if (!(numheaders = find_media_headers(mtd, buf, "ANAND", 1)))
+ goto out;
+ mh = (struct NFTLMediaHeader *)buf;
-/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */
-/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */
+ mh->NumEraseUnits = le16_to_cpu(mh->NumEraseUnits);
+ mh->FirstPhysicalEUN = le16_to_cpu(mh->FirstPhysicalEUN);
+ mh->FormattedSize = le32_to_cpu(mh->FormattedSize);
+
printk(KERN_INFO " DataOrgID = %s\n"
" NumEraseUnits = %d\n"
" FirstPhysicalEUN = %d\n"
@@ -1136,7 +1151,6 @@
mh->DataOrgID, mh->NumEraseUnits,
mh->FirstPhysicalEUN, mh->FormattedSize,
mh->UnitSizeFactor);
-/*#endif */
blocks = mtd->size >> this->phys_erase_shift;
maxblocks = min(32768U, mtd->erasesize - psize);
@@ -1145,8 +1159,8 @@
/* Auto-determine UnitSizeFactor. The constraints are:
- There can be at most 32768 virtual blocks.
- There can be at most (virtual block size - page size)
- virtual blocks (because MediaHeader+BBT must fit in 1).
- */
+ virtual blocks (because MediaHeader+BBT must fit in 1).
+ */
mh->UnitSizeFactor = 0xff;
while (blocks > maxblocks) {
blocks >>= 1;
@@ -1179,31 +1193,35 @@
offs <<= this->page_shift;
offs += mtd->erasesize;
- /*parts[0].name = " DiskOnChip Boot / Media Header partition"; */
- /*parts[0].offset = 0; */
- /*parts[0].size = offs; */
-
- parts[0].name = " DiskOnChip BDTL partition";
- parts[0].offset = offs;
- parts[0].size = (mh->NumEraseUnits - numheaders) << this->bbt_erase_shift;
-
- offs += parts[0].size;
- if (offs < mtd->size) {
- parts[1].name = " DiskOnChip Remainder partition";
- parts[1].offset = offs;
- parts[1].size = mtd->size - offs;
- ret = 2;
- goto out;
+ if (show_firmware_partition == 1) {
+ parts[0].name = " DiskOnChip Firmware / Media Header partition";
+ parts[0].offset = 0;
+ parts[0].size = offs;
+ numparts = 1;
}
- ret = 1;
-out:
+
+ parts[numparts].name = " DiskOnChip BDTL partition";
+ parts[numparts].offset = offs;
+ parts[numparts].size = (mh->NumEraseUnits - numheaders) << this->bbt_erase_shift;
+
+ offs += parts[numparts].size;
+ numparts++;
+
+ if (offs < mtd->size) {
+ parts[numparts].name = " DiskOnChip Remainder partition";
+ parts[numparts].offset = offs;
+ parts[numparts].size = mtd->size - offs;
+ numparts++;
+ }
+
+ ret = numparts;
+ out:
kfree(buf);
return ret;
}
/* This is a stripped-down copy of the code in inftlmount.c */
-static inline int __init inftl_partscan(struct mtd_info *mtd,
- struct mtd_partition *parts)
+static inline int __init inftl_partscan(struct mtd_info *mtd, struct mtd_partition *parts)
{
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
@@ -1220,15 +1238,16 @@
if (inftl_bbt_write)
end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift);
- buf = kmalloc(mtd->oobblock, GFP_KERNEL);
+ buf = kmalloc(mtd->writesize, GFP_KERNEL);
if (!buf) {
printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
return 0;
}
- if (!find_media_headers(mtd, buf, "BNAND", 0)) goto out;
+ if (!find_media_headers(mtd, buf, "BNAND", 0))
+ goto out;
doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift);
- mh = (struct INFTLMediaHeader *) buf;
+ mh = (struct INFTLMediaHeader *)buf;
mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
@@ -1237,8 +1256,6 @@
mh->FormatFlags = le32_to_cpu(mh->FormatFlags);
mh->PercentUsed = le32_to_cpu(mh->PercentUsed);
-/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */
-/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */
printk(KERN_INFO " bootRecordID = %s\n"
" NoOfBootImageBlocks = %d\n"
" NoOfBinaryPartitions = %d\n"
@@ -1256,7 +1273,6 @@
((unsigned char *) &mh->OsakVersion)[2] & 0xf,
((unsigned char *) &mh->OsakVersion)[3] & 0xf,
mh->PercentUsed);
-/*#endif */
vshift = this->phys_erase_shift + mh->BlockMultiplierBits;
@@ -1282,8 +1298,6 @@
ip->spareUnits = le32_to_cpu(ip->spareUnits);
ip->Reserved0 = le32_to_cpu(ip->Reserved0);
-/*#ifdef CONFIG_MTD_DEBUG_VERBOSE */
-/* if (CONFIG_MTD_DEBUG_VERBOSE >= 2) */
printk(KERN_INFO " PARTITION[%d] ->\n"
" virtualUnits = %d\n"
" firstUnit = %d\n"
@@ -1293,16 +1307,14 @@
i, ip->virtualUnits, ip->firstUnit,
ip->lastUnit, ip->flags,
ip->spareUnits);
-/*#endif */
-/*
- if ((i == 0) && (ip->firstUnit > 0)) {
+ if ((show_firmware_partition == 1) &&
+ (i == 0) && (ip->firstUnit > 0)) {
parts[0].name = " DiskOnChip IPL / Media Header partition";
parts[0].offset = 0;
parts[0].size = mtd->erasesize * ip->firstUnit;
numparts = 1;
}
-*/
if (ip->flags & INFTL_BINARY)
parts[numparts].name = " DiskOnChip BDK partition";
@@ -1311,8 +1323,10 @@
parts[numparts].offset = ip->firstUnit << vshift;
parts[numparts].size = (1 + ip->lastUnit - ip->firstUnit) << vshift;
numparts++;
- if (ip->lastUnit > lastvunit) lastvunit = ip->lastUnit;
- if (ip->flags & INFTL_LAST) break;
+ if (ip->lastUnit > lastvunit)
+ lastvunit = ip->lastUnit;
+ if (ip->flags & INFTL_LAST)
+ break;
}
lastvunit++;
if ((lastvunit << vshift) < end) {
@@ -1322,7 +1336,7 @@
numparts++;
}
ret = numparts;
-out:
+ out:
kfree(buf);
return ret;
}
@@ -1334,11 +1348,12 @@
struct doc_priv *doc = this->priv;
struct mtd_partition parts[2];
- memset((char *) parts, 0, sizeof(parts));
+ memset((char *)parts, 0, sizeof(parts));
/* On NFTL, we have to find the media headers before we can read the
BBTs, since they're stored in the media header eraseblocks. */
numparts = nftl_partscan(mtd, parts);
- if (!numparts) return -EIO;
+ if (!numparts)
+ return -EIO;
this->bbt_td->options = NAND_BBT_ABSPAGE | NAND_BBT_8BIT |
NAND_BBT_SAVECONTENT | NAND_BBT_WRITE |
NAND_BBT_VERSION;
@@ -1385,8 +1400,7 @@
this->bbt_td->pages[0] = 2;
this->bbt_md = NULL;
} else {
- this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
- NAND_BBT_VERSION;
+ this->bbt_td->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION;
if (inftl_bbt_write)
this->bbt_td->options |= NAND_BBT_WRITE;
this->bbt_td->offs = 8;
@@ -1396,8 +1410,7 @@
this->bbt_td->reserved_block_code = 0x01;
this->bbt_td->pattern = "MSYS_BBT";
- this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT |
- NAND_BBT_VERSION;
+ this->bbt_md->options = NAND_BBT_LASTBLOCK | NAND_BBT_8BIT | NAND_BBT_VERSION;
if (inftl_bbt_write)
this->bbt_md->options |= NAND_BBT_WRITE;
this->bbt_md->offs = 8;
@@ -1412,12 +1425,13 @@
At least as nand_bbt.c is currently written. */
if ((ret = nand_scan_bbt(mtd, NULL)))
return ret;
- memset((char *) parts, 0, sizeof(parts));
+ memset((char *)parts, 0, sizeof(parts));
numparts = inftl_partscan(mtd, parts);
/* At least for now, require the INFTL Media Header. We could probably
do without it for non-INFTL use, since all it gives us is
autopartitioning, but I want to give it more thought. */
- if (!numparts) return -EIO;
+ if (!numparts)
+ return -EIO;
add_mtd_device(mtd);
#ifdef CONFIG_MTD_PARTITIONS
if (!no_autopart)
@@ -1431,7 +1445,6 @@
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
- this->write_byte = doc2000_write_byte;
this->read_byte = doc2000_read_byte;
this->write_buf = doc2000_writebuf;
this->read_buf = doc2000_readbuf;
@@ -1449,7 +1462,6 @@
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
- this->write_byte = doc2001_write_byte;
this->read_byte = doc2001_read_byte;
this->write_buf = doc2001_writebuf;
this->read_buf = doc2001_readbuf;
@@ -1481,16 +1493,15 @@
struct nand_chip *this = mtd->priv;
struct doc_priv *doc = this->priv;
- this->write_byte = NULL;
this->read_byte = doc2001plus_read_byte;
this->write_buf = doc2001plus_writebuf;
this->read_buf = doc2001plus_readbuf;
this->verify_buf = doc2001plus_verifybuf;
this->scan_bbt = inftl_scan_bbt;
- this->hwcontrol = NULL;
+ this->cmd_ctrl = NULL;
this->select_chip = doc2001plus_select_chip;
this->cmdfunc = doc2001plus_command;
- this->enable_hwecc = doc2001plus_enable_hwecc;
+ this->ecc.hwctl = doc2001plus_enable_hwecc;
doc->chips_per_floor = 1;
mtd->name = "DiskOnChip Millennium Plus";
@@ -1498,7 +1509,7 @@
return 1;
}
-static inline int __init doc_probe(unsigned long physadr)
+static int __init doc_probe(unsigned long physadr)
{
unsigned char ChipID;
struct mtd_info *mtd;
@@ -1527,20 +1538,16 @@
save_control = ReadDOC(virtadr, DOCControl);
/* Reset the DiskOnChip ASIC */
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
- virtadr, DOCControl);
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
- virtadr, DOCControl);
+ WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET, virtadr, DOCControl);
+ 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,
- virtadr, DOCControl);
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
- virtadr, DOCControl);
+ WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl);
+ WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL, virtadr, DOCControl);
ChipID = ReadDOC(virtadr, ChipID);
- switch(ChipID) {
+ switch (ChipID) {
case DOC_ChipID_Doc2k:
reg = DoC_2k_ECCStatus;
break;
@@ -1556,15 +1563,13 @@
ReadDOC(virtadr, Mplus_Power);
/* Reset the Millennium Plus ASIC */
- tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
- DOC_MODE_BDECT;
+ tmp = DOC_MODE_RESET | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT;
WriteDOC(tmp, virtadr, Mplus_DOCControl);
WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
mdelay(1);
/* Enable the Millennium Plus ASIC */
- tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT |
- DOC_MODE_BDECT;
+ tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT;
WriteDOC(tmp, virtadr, Mplus_DOCControl);
WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
mdelay(1);
@@ -1588,7 +1593,7 @@
goto notfound;
}
/* Check the TOGGLE bit in the ECC register */
- tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
+ tmp = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
tmpb = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
tmpc = ReadDOC_(virtadr, reg) & DOC_TOGGLE_BIT;
if ((tmp == tmpb) || (tmp != tmpc)) {
@@ -1618,11 +1623,11 @@
if (ChipID == DOC_ChipID_DocMilPlus16) {
WriteDOC(~newval, virtadr, Mplus_AliasResolution);
oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
- WriteDOC(newval, virtadr, Mplus_AliasResolution); /* restore it */
+ WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it
} else {
WriteDOC(~newval, virtadr, AliasResolution);
oldval = ReadDOC(doc->virtadr, AliasResolution);
- WriteDOC(newval, virtadr, AliasResolution); /* restore it */
+ WriteDOC(newval, virtadr, AliasResolution); // restore it
}
newval = ~newval;
if (oldval == newval) {
@@ -1634,16 +1639,13 @@
printk(KERN_NOTICE "DiskOnChip found at 0x%lx\n", physadr);
len = sizeof(struct mtd_info) +
- sizeof(struct nand_chip) +
- sizeof(struct doc_priv) +
- (2 * sizeof(struct nand_bbt_descr));
- mtd = kmalloc(len, GFP_KERNEL);
+ sizeof(struct nand_chip) + sizeof(struct doc_priv) + (2 * sizeof(struct nand_bbt_descr));
+ mtd = kzalloc(len, GFP_KERNEL);
if (!mtd) {
printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len);
ret = -ENOMEM;
goto fail;
}
- memset(mtd, 0, len);
nand = (struct nand_chip *) (mtd + 1);
doc = (struct doc_priv *) (nand + 1);
@@ -1655,17 +1657,19 @@
nand->priv = doc;
nand->select_chip = doc200x_select_chip;
- nand->hwcontrol = doc200x_hwcontrol;
+ nand->cmd_ctrl = doc200x_hwcontrol;
nand->dev_ready = doc200x_dev_ready;
nand->waitfunc = doc200x_wait;
nand->block_bad = doc200x_block_bad;
- nand->enable_hwecc = doc200x_enable_hwecc;
- nand->calculate_ecc = doc200x_calculate_ecc;
- nand->correct_data = doc200x_correct_data;
+ nand->ecc.hwctl = doc200x_enable_hwecc;
+ nand->ecc.calculate = doc200x_calculate_ecc;
+ nand->ecc.correct = doc200x_correct_data;
- nand->autooob = &doc200x_oobinfo;
- nand->eccmode = NAND_ECC_HW6_512;
- nand->options = NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME;
+ nand->ecc.layout = &doc200x_oobinfo;
+ nand->ecc.mode = NAND_ECC_HW_SYNDROME;
+ nand->ecc.size = 512;
+ nand->ecc.bytes = 6;
+ nand->options = NAND_USE_FLASH_BBT;
doc->physadr = physadr;
doc->virtadr = virtadr;
@@ -1699,11 +1703,11 @@
doclist = mtd;
return 0;
-notfound:
+ notfound:
/* Put back the contents of the DOCControl register, in case it's not
actually a DiskOnChip. */
WriteDOC(save_control, virtadr, DOCControl);
-fail:
+ fail:
iounmap(virtadr);
return ret;
}
@@ -1740,7 +1744,7 @@
*/
rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS);
if (!rs_decoder) {
- printk (KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
+ printk(KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
return -ENOMEM;
}
@@ -1750,7 +1754,7 @@
if (ret < 0)
goto outerr;
} else {
- for (i=0; (doc_locations[i] != 0xffffffff); i++) {
+ for (i = 0; (doc_locations[i] != 0xffffffff); i++) {
doc_probe(doc_locations[i]);
}
}
@@ -1762,7 +1766,7 @@
goto outerr;
}
return 0;
-outerr:
+ outerr:
free_rs(rs_decoder);
return ret;
}
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 6416d15..aeb1797 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -10,39 +10,21 @@
* http://www.linux-mtd.infradead.org/tech/nand.html
*
* Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
- * 2002 Thomas Gleixner (tglx@linutronix.de)
+ * 2002-2006 Thomas Gleixner (tglx@linutronix.de)
*
- * 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
- * pointed this out, as he marked an auto increment capable chip
- * as NOAUTOINCR in the board driver.
- * 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
- * among multiple independend devices. Suggestions and initial patch
- * from Ben Dooks <ben-mtd@fluff.org>
- *
- * Credits:
+ * Credits:
* David Woodhouse for adding multichip support
*
* Aleph One Ltd. and Toby Churchill Ltd. for supporting the
* rework for 2K page size chips
*
- * TODO:
+ * TODO:
* Enable cached programming for 2k page size chips
* Check, if mtd->ecctype should be set to MTD_ECC_HW
* if we have HW ecc support.
* The AG-AND chips have nice features for speed improvement,
* which are not supported yet. Read / program 4 pages in one go.
*
- * $Id: nand_base.c,v 1.126 2004/12/13 11:22:25 lavinen 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
* published by the Free Software Foundation.
@@ -51,8 +33,10 @@
/* XXX U-BOOT XXX */
#if 0
+#include <linux/module.h>
#include <linux/delay.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -62,6 +46,7 @@
#include <linux/mtd/compatmac.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
+#include <linux/leds.h>
#include <asm/io.h>
#ifdef CONFIG_MTD_PARTITIONS
@@ -72,10 +57,13 @@
#include <common.h>
+#define ENOTSUPP 524 /* Operation is not supported */
+
#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)
#include <malloc.h>
#include <watchdog.h>
+#include <linux/err.h>
#include <linux/mtd/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
@@ -89,82 +77,66 @@
#endif
/* Define default oob placement schemes for large and small page devices */
-static struct nand_oobinfo nand_oob_8 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_8 = {
.eccbytes = 3,
.eccpos = {0, 1, 2},
- .oobfree = { {3, 2}, {6, 2} }
+ .oobfree = {
+ {.offset = 3,
+ .length = 2},
+ {.offset = 6,
+ .length = 2}}
};
-static struct nand_oobinfo nand_oob_16 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_16 = {
.eccbytes = 6,
.eccpos = {0, 1, 2, 3, 6, 7},
- .oobfree = { {8, 8} }
+ .oobfree = {
+ {.offset = 8,
+ . length = 8}}
};
-static struct nand_oobinfo nand_oob_64 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_64 = {
.eccbytes = 24,
.eccpos = {
- 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} }
+ 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 = {
+ {.offset = 2,
+ .length = 38}}
};
-static struct nand_oobinfo nand_oob_128 = {
- .useecc = MTD_NANDECC_AUTOPLACE,
+static struct nand_ecclayout nand_oob_128 = {
.eccbytes = 48,
.eccpos = {
- 80, 81, 82, 83, 84, 85, 86, 87,
- 88, 89, 90, 91, 92, 93, 94, 95,
- 96, 97, 98, 99, 100, 101, 102, 103,
- 104, 105, 106, 107, 108, 109, 110, 111,
- 112, 113, 114, 115, 116, 117, 118, 119,
- 120, 121, 122, 123, 124, 125, 126, 127},
- .oobfree = { {2, 78} }
+ 80, 81, 82, 83, 84, 85, 86, 87,
+ 88, 89, 90, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99, 100, 101, 102, 103,
+ 104, 105, 106, 107, 108, 109, 110, 111,
+ 112, 113, 114, 115, 116, 117, 118, 119,
+ 120, 121, 122, 123, 124, 125, 126, 127},
+ .oobfree = {
+ {.offset = 2,
+ .length = 78}}
};
-/* This is used for padding purposes in nand_write_oob */
-static u_char *ffchars;
+
+static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd,
+ int new_state);
+
+static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops);
+
+static int nand_wait(struct mtd_info *mtd, struct nand_chip *this);
/*
- * NAND low-level MTD interface functions
+ * For devices which display every fart in the system on a seperate LED. Is
+ * compiled away when LED support is disabled.
*/
-static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len);
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len);
-static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len);
-
-static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
-static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
-static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf);
-static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf);
-static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel);
-static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf);
/* XXX U-BOOT XXX */
#if 0
-static int nand_writev (struct mtd_info *mtd, const struct kvec *vecs,
- unsigned long count, loff_t to, size_t * retlen);
-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);
+DEFINE_LED_TRIGGER(nand_led_trigger);
#endif
-static int nand_erase (struct mtd_info *mtd, struct erase_info *instr);
-static void nand_sync (struct mtd_info *mtd);
-
-/* Some internal functions */
-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,
- u_char *oob_buf, struct nand_oobinfo *oobsel, int chipnr, int oobmode);
-#else
-#define nand_verify_pages(...) (0)
-#endif
-
-static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state);
/**
* nand_release_device - [GENERIC] release chip
@@ -174,33 +146,25 @@
*/
/* XXX U-BOOT XXX */
#if 0
-static void nand_release_device (struct mtd_info *mtd)
+static void nand_release_device(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
/* De-select the NAND device */
- this->select_chip(mtd, -1);
- /* Do we have a hardware controller ? */
- if (this->controller) {
- spin_lock(&this->controller->lock);
- this->controller->active = NULL;
- spin_unlock(&this->controller->lock);
- }
- /* Release the chip */
- spin_lock (&this->chip_lock);
- this->state = FL_READY;
- wake_up (&this->wq);
- spin_unlock (&this->chip_lock);
+ chip->select_chip(mtd, -1);
+
+ /* Release the controller and the chip */
+ spin_lock(&chip->controller->lock);
+ chip->controller->active = NULL;
+ chip->state = FL_READY;
+ wake_up(&chip->controller->wq);
+ spin_unlock(&chip->controller->lock);
}
#else
static void nand_release_device (struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
this->select_chip(mtd, -1); /* De-select the NAND device */
- if (ffchars) {
- kfree(ffchars);
- ffchars = NULL;
- }
}
#endif
@@ -210,23 +174,10 @@
*
* Default read function for 8bit buswith
*/
-static u_char nand_read_byte(struct mtd_info *mtd)
+static uint8_t nand_read_byte(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
- return readb(this->IO_ADDR_R);
-}
-
-/**
- * nand_write_byte - [DEFAULT] write one byte to the chip
- * @mtd: MTD device structure
- * @byte: pointer to data byte to write
- *
- * Default write function for 8it buswith
- */
-static void nand_write_byte(struct mtd_info *mtd, u_char byte)
-{
- struct nand_chip *this = mtd->priv;
- writeb(byte, this->IO_ADDR_W);
+ struct nand_chip *chip = mtd->priv;
+ return readb(chip->IO_ADDR_R);
}
/**
@@ -236,24 +187,10 @@
* Default read function for 16bit buswith with
* endianess conversion
*/
-static u_char nand_read_byte16(struct mtd_info *mtd)
+static uint8_t nand_read_byte16(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
- return (u_char) cpu_to_le16(readw(this->IO_ADDR_R));
-}
-
-/**
- * nand_write_byte16 - [DEFAULT] write one byte endianess aware to the chip
- * @mtd: MTD device structure
- * @byte: pointer to data byte to write
- *
- * Default write function for 16bit buswith with
- * endianess conversion
- */
-static void nand_write_byte16(struct mtd_info *mtd, u_char byte)
-{
- struct nand_chip *this = mtd->priv;
- writew(le16_to_cpu((u16) byte), this->IO_ADDR_W);
+ struct nand_chip *chip = mtd->priv;
+ return (uint8_t) cpu_to_le16(readw(chip->IO_ADDR_R));
}
/**
@@ -265,40 +202,26 @@
*/
static u16 nand_read_word(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
- return readw(this->IO_ADDR_R);
-}
-
-/**
- * nand_write_word - [DEFAULT] write one word to the chip
- * @mtd: MTD device structure
- * @word: data word to write
- *
- * 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;
- writew(word, this->IO_ADDR_W);
+ struct nand_chip *chip = mtd->priv;
+ return readw(chip->IO_ADDR_R);
}
/**
* nand_select_chip - [DEFAULT] control CE line
* @mtd: MTD device structure
- * @chip: chipnumber to select, -1 for deselect
+ * @chipnr: chipnumber to select, -1 for deselect
*
* Default select function for 1 chip devices.
*/
-static void nand_select_chip(struct mtd_info *mtd, int chip)
+static void nand_select_chip(struct mtd_info *mtd, int chipnr)
{
- struct nand_chip *this = mtd->priv;
- switch(chip) {
+ struct nand_chip *chip = mtd->priv;
+
+ switch (chipnr) {
case -1:
- this->hwcontrol(mtd, NAND_CTL_CLRNCE);
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE);
break;
case 0:
- this->hwcontrol(mtd, NAND_CTL_SETNCE);
break;
default:
@@ -314,13 +237,13 @@
*
* Default write function for 8bit buswith
*/
-static void nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
- for (i=0; i<len; i++)
- writeb(buf[i], this->IO_ADDR_W);
+ for (i = 0; i < len; i++)
+ writeb(buf[i], chip->IO_ADDR_W);
}
/**
@@ -331,13 +254,13 @@
*
* Default read function for 8bit buswith
*/
-static void nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
- for (i=0; i<len; i++)
- buf[i] = readb(this->IO_ADDR_R);
+ for (i = 0; i < len; i++)
+ buf[i] = readb(chip->IO_ADDR_R);
}
/**
@@ -348,15 +271,14 @@
*
* Default verify function for 8bit buswith
*/
-static int nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
+static int nand_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
- for (i=0; i<len; i++)
- if (buf[i] != readb(this->IO_ADDR_R))
+ for (i = 0; i < len; i++)
+ if (buf[i] != readb(chip->IO_ADDR_R))
return -EFAULT;
-
return 0;
}
@@ -368,15 +290,15 @@
*
* Default write function for 16bit buswith
*/
-static void nand_write_buf16(struct mtd_info *mtd, const u_char *buf, int len)
+static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
u16 *p = (u16 *) buf;
len >>= 1;
- for (i=0; i<len; i++)
- writew(p[i], this->IO_ADDR_W);
+ for (i = 0; i < len; i++)
+ writew(p[i], chip->IO_ADDR_W);
}
@@ -388,15 +310,15 @@
*
* Default read function for 16bit buswith
*/
-static void nand_read_buf16(struct mtd_info *mtd, u_char *buf, int len)
+static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
u16 *p = (u16 *) buf;
len >>= 1;
- for (i=0; i<len; i++)
- p[i] = readw(this->IO_ADDR_R);
+ for (i = 0; i < len; i++)
+ p[i] = readw(chip->IO_ADDR_R);
}
/**
@@ -407,15 +329,15 @@
*
* Default verify function for 16bit buswith
*/
-static int nand_verify_buf16(struct mtd_info *mtd, const u_char *buf, int len)
+static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
{
int i;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
u16 *p = (u16 *) buf;
len >>= 1;
- for (i=0; i<len; i++)
- if (p[i] != readw(this->IO_ADDR_R))
+ for (i = 0; i < len; i++)
+ if (p[i] != readw(chip->IO_ADDR_R))
return -EFAULT;
return 0;
@@ -432,38 +354,36 @@
static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
{
int page, chipnr, res = 0;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
u16 bad;
- page = (int)(ofs >> this->page_shift) & this->pagemask;
+ page = (int)(ofs >> chip->page_shift) & chip->pagemask;
if (getchip) {
- chipnr = (int)(ofs >> this->chip_shift);
+ chipnr = (int)(ofs >> chip->chip_shift);
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_READING);
+ nand_get_device(chip, mtd, FL_READING);
/* Select the NAND device */
- this->select_chip(mtd, chipnr);
+ chip->select_chip(mtd, chipnr);
}
- if (this->options & NAND_BUSWIDTH_16) {
- this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE, page);
- bad = cpu_to_le16(this->read_word(mtd));
- if (this->badblockpos & 0x1)
- bad >>= 1;
+ if (chip->options & NAND_BUSWIDTH_16) {
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE,
+ page);
+ bad = cpu_to_le16(chip->read_word(mtd));
+ if (chip->badblockpos & 0x1)
+ bad >>= 8;
if ((bad & 0xFF) != 0xff)
res = 1;
} else {
- this->cmdfunc (mtd, NAND_CMD_READOOB, this->badblockpos, page);
- if (this->read_byte(mtd) != 0xff)
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page);
+ if (chip->read_byte(mtd) != 0xff)
res = 1;
}
- if (getchip) {
- /* Deselect and wake up anyone waiting on the device */
+ if (getchip)
nand_release_device(mtd);
- }
return res;
}
@@ -478,22 +398,33 @@
*/
static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
- struct nand_chip *this = mtd->priv;
- u_char buf[2] = {0, 0};
- size_t retlen;
- int block;
+ struct nand_chip *chip = mtd->priv;
+ uint8_t buf[2] = { 0, 0 };
+ int block, ret;
/* Get block number */
- block = ((int) ofs) >> this->bbt_erase_shift;
- this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
+ block = (int)(ofs >> chip->bbt_erase_shift);
+ if (chip->bbt)
+ chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
/* Do we have a flash based bad block table ? */
- if (this->options & NAND_USE_FLASH_BBT)
- return nand_update_bbt (mtd, ofs);
+ if (chip->options & NAND_USE_FLASH_BBT)
+ ret = nand_update_bbt(mtd, ofs);
+ else {
+ /* We write two bytes, so we dont have to mess with 16 bit
+ * access
+ */
+ ofs += mtd->oobsize;
+ chip->ops.len = chip->ops.ooblen = 2;
+ chip->ops.datbuf = NULL;
+ chip->ops.oobbuf = buf;
+ chip->ops.ooboffs = chip->badblockpos & ~0x01;
- /* 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);
+ ret = nand_do_write_oob(mtd, ofs, &chip->ops);
+ }
+ if (!ret)
+ mtd->ecc_stats.badblocks++;
+ return ret;
}
/**
@@ -503,12 +434,12 @@
*
* The function expects, that the device is already selected
*/
-static int nand_check_wp (struct mtd_info *mtd)
+static int nand_check_wp(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
/* Check the WP bit */
- this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
- return (this->read_byte(mtd) & 0x80) ? 0 : 1;
+ chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+ return (chip->read_byte(mtd) & NAND_STATUS_WP) ? 0 : 1;
}
/**
@@ -521,17 +452,47 @@
* Check, if the block is bad. Either by reading the bad block table or
* calling of the scan function.
*/
-static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt)
+static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
+ int allowbbt)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
- if (!this->bbt)
- return this->block_bad(mtd, ofs, getchip);
+ if (!chip->bbt)
+ return chip->block_bad(mtd, ofs, getchip);
/* Return info from the table */
- return nand_isbad_bbt (mtd, ofs, allowbbt);
+ return nand_isbad_bbt(mtd, ofs, allowbbt);
}
+/*
+ * Wait for the ready pin, after a command
+ * The timeout is catched later.
+ */
+/* XXX U-BOOT XXX */
+#if 0
+void nand_wait_ready(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ unsigned long timeo = jiffies + 2;
+
+ led_trigger_event(nand_led_trigger, LED_FULL);
+ /* wait until command is processed or timeout occures */
+ do {
+ if (chip->dev_ready(mtd))
+ break;
+ touch_softlockup_watchdog();
+ } while (time_before(jiffies, timeo));
+ led_trigger_event(nand_led_trigger, LED_OFF);
+}
+EXPORT_SYMBOL_GPL(nand_wait_ready);
+#else
+void nand_wait_ready(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ nand_wait(mtd, chip);
+}
+#endif
+
/**
* nand_command - [DEFAULT] Send command to NAND device
* @mtd: MTD device structure
@@ -542,21 +503,21 @@
* Send command to NAND device. This function is used for small page
* devices (256/512 Bytes per page)
*/
-static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void nand_command(struct mtd_info *mtd, unsigned int command,
+ int column, int page_addr)
{
- register struct nand_chip *this = mtd->priv;
+ register struct nand_chip *chip = mtd->priv;
+ int ctrl = NAND_CTRL_CLE | NAND_CTRL_CHANGE;
- /* Begin command latch cycle */
- this->hwcontrol(mtd, NAND_CTL_SETCLE);
/*
* Write out the command to the device.
*/
if (command == NAND_CMD_SEQIN) {
int readcmd;
- if (column >= mtd->oobblock) {
+ if (column >= mtd->writesize) {
/* OOB area */
- column -= mtd->oobblock;
+ column -= mtd->writesize;
readcmd = NAND_CMD_READOOB;
} else if (column < 256) {
/* First 256 bytes --> READ0 */
@@ -565,38 +526,37 @@
column -= 256;
readcmd = NAND_CMD_READ1;
}
- this->write_byte(mtd, readcmd);
+ chip->cmd_ctrl(mtd, readcmd, ctrl);
+ ctrl &= ~NAND_CTRL_CHANGE;
}
- this->write_byte(mtd, command);
+ chip->cmd_ctrl(mtd, command, ctrl);
- /* Set ALE and clear CLE to start address cycle */
- this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-
- if (column != -1 || page_addr != -1) {
- this->hwcontrol(mtd, NAND_CTL_SETALE);
-
- /* Serially input address */
- if (column != -1) {
- /* Adjust columns for 16 bit buswidth */
- if (this->options & NAND_BUSWIDTH_16)
- column >>= 1;
- this->write_byte(mtd, column);
- }
- if (page_addr != -1) {
- this->write_byte(mtd, (unsigned char) (page_addr & 0xff));
- this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
- /* One more address cycle for devices > 32MiB */
- if (this->chipsize > (32 << 20))
- this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0x0f));
- }
- /* Latch in address */
- this->hwcontrol(mtd, NAND_CTL_CLRALE);
+ /*
+ * Address cycle, when necessary
+ */
+ ctrl = NAND_CTRL_ALE | NAND_CTRL_CHANGE;
+ /* Serially input address */
+ if (column != -1) {
+ /* Adjust columns for 16 bit buswidth */
+ if (chip->options & NAND_BUSWIDTH_16)
+ column >>= 1;
+ chip->cmd_ctrl(mtd, column, ctrl);
+ ctrl &= ~NAND_CTRL_CHANGE;
}
+ if (page_addr != -1) {
+ chip->cmd_ctrl(mtd, page_addr, ctrl);
+ ctrl &= ~NAND_CTRL_CHANGE;
+ chip->cmd_ctrl(mtd, page_addr >> 8, ctrl);
+ /* One more address cycle for devices > 32MiB */
+ if (chip->chipsize > (32 << 20))
+ chip->cmd_ctrl(mtd, page_addr >> 16, ctrl);
+ }
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
/*
* program and erase have their own busy handlers
* status and sequential in needs no delay
- */
+ */
switch (command) {
case NAND_CMD_PAGEPROG:
@@ -607,32 +567,32 @@
return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (chip->dev_ready)
break;
- udelay(this->chip_delay);
- this->hwcontrol(mtd, NAND_CTL_SETCLE);
- this->write_byte(mtd, NAND_CMD_STATUS);
- this->hwcontrol(mtd, NAND_CTL_CLRCLE);
- while ( !(this->read_byte(mtd) & 0x40));
+ udelay(chip->chip_delay);
+ chip->cmd_ctrl(mtd, NAND_CMD_STATUS,
+ NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+ chip->cmd_ctrl(mtd,
+ NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+ while (!(chip->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);
+ */
+ if (!chip->dev_ready) {
+ udelay(chip->chip_delay);
return;
}
}
-
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
- ndelay (100);
- /* wait until command is processed */
- while (!this->dev_ready(mtd));
+ ndelay(100);
+
+ nand_wait_ready(mtd);
}
/**
@@ -642,55 +602,53 @@
* @column: the column address for this command, -1 if none
* @page_addr: the page address for this command, -1 if none
*
- * Send command to NAND device. This is the version for the new large page devices
- * We dont have the seperate regions as we have in the small page devices.
- * We must emulate NAND_CMD_READOOB to keep the code compatible.
- *
+ * Send command to NAND device. This is the version for the new large page
+ * devices We dont have the separate regions as we have in the small page
+ * devices. We must emulate NAND_CMD_READOOB to keep the code compatible.
*/
-static void nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr)
+static void nand_command_lp(struct mtd_info *mtd, unsigned int command,
+ int column, int page_addr)
{
- register struct nand_chip *this = mtd->priv;
+ register struct nand_chip *chip = mtd->priv;
/* Emulate NAND_CMD_READOOB */
if (command == NAND_CMD_READOOB) {
- column += mtd->oobblock;
+ column += mtd->writesize;
command = NAND_CMD_READ0;
}
-
- /* Begin command latch cycle */
- this->hwcontrol(mtd, NAND_CTL_SETCLE);
- /* Write out the command to the device. */
- this->write_byte(mtd, command);
- /* End command latch cycle */
- this->hwcontrol(mtd, NAND_CTL_CLRCLE);
+ /* Command latch cycle */
+ chip->cmd_ctrl(mtd, command & 0xff,
+ NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
if (column != -1 || page_addr != -1) {
- this->hwcontrol(mtd, NAND_CTL_SETALE);
+ int ctrl = NAND_CTRL_CHANGE | NAND_NCE | NAND_ALE;
/* Serially input address */
if (column != -1) {
/* Adjust columns for 16 bit buswidth */
- if (this->options & NAND_BUSWIDTH_16)
+ if (chip->options & NAND_BUSWIDTH_16)
column >>= 1;
- this->write_byte(mtd, column & 0xff);
- this->write_byte(mtd, column >> 8);
+ chip->cmd_ctrl(mtd, column, ctrl);
+ ctrl &= ~NAND_CTRL_CHANGE;
+ chip->cmd_ctrl(mtd, column >> 8, ctrl);
}
if (page_addr != -1) {
- this->write_byte(mtd, (unsigned char) (page_addr & 0xff));
- this->write_byte(mtd, (unsigned char) ((page_addr >> 8) & 0xff));
+ chip->cmd_ctrl(mtd, page_addr, ctrl);
+ chip->cmd_ctrl(mtd, page_addr >> 8,
+ NAND_NCE | NAND_ALE);
/* One more address cycle for devices > 128MiB */
- if (this->chipsize > (128 << 20))
- this->write_byte(mtd, (unsigned char) ((page_addr >> 16) & 0xff));
+ if (chip->chipsize > (128 << 20))
+ chip->cmd_ctrl(mtd, page_addr >> 16,
+ NAND_NCE | NAND_ALE);
}
- /* Latch in address */
- this->hwcontrol(mtd, NAND_CTL_CLRALE);
}
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
/*
* program and erase have their own busy handlers
- * status and sequential in needs no delay
- */
+ * status, sequential in, and deplete1 need no delay
+ */
switch (command) {
case NAND_CMD_CACHEDPROG:
@@ -698,51 +656,69 @@
case NAND_CMD_ERASE1:
case NAND_CMD_ERASE2:
case NAND_CMD_SEQIN:
+ case NAND_CMD_RNDIN:
case NAND_CMD_STATUS:
+ case NAND_CMD_DEPLETE1:
return;
+ /*
+ * read error status commands require only a short delay
+ */
+ case NAND_CMD_STATUS_ERROR:
+ case NAND_CMD_STATUS_ERROR0:
+ case NAND_CMD_STATUS_ERROR1:
+ case NAND_CMD_STATUS_ERROR2:
+ case NAND_CMD_STATUS_ERROR3:
+ udelay(chip->chip_delay);
+ return;
case NAND_CMD_RESET:
- if (this->dev_ready)
+ if (chip->dev_ready)
break;
- udelay(this->chip_delay);
- this->hwcontrol(mtd, NAND_CTL_SETCLE);
- this->write_byte(mtd, NAND_CMD_STATUS);
- this->hwcontrol(mtd, NAND_CTL_CLRCLE);
- while ( !(this->read_byte(mtd) & 0x40));
+ udelay(chip->chip_delay);
+ chip->cmd_ctrl(mtd, NAND_CMD_STATUS,
+ NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+ NAND_NCE | NAND_CTRL_CHANGE);
+ while (!(chip->read_byte(mtd) & NAND_STATUS_READY)) ;
+ return;
+
+ case NAND_CMD_RNDOUT:
+ /* No ready / busy check necessary */
+ chip->cmd_ctrl(mtd, NAND_CMD_RNDOUTSTART,
+ NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+ NAND_NCE | NAND_CTRL_CHANGE);
return;
case NAND_CMD_READ0:
- /* Begin command latch cycle */
- this->hwcontrol(mtd, NAND_CTL_SETCLE);
- /* Write out the start read command */
- this->write_byte(mtd, NAND_CMD_READSTART);
- /* End command latch cycle */
- this->hwcontrol(mtd, NAND_CTL_CLRCLE);
- /* Fall through into ready check */
+ chip->cmd_ctrl(mtd, NAND_CMD_READSTART,
+ NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE);
+ chip->cmd_ctrl(mtd, NAND_CMD_NONE,
+ NAND_NCE | NAND_CTRL_CHANGE);
- /* 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);
+ */
+ if (!chip->dev_ready) {
+ udelay(chip->chip_delay);
return;
}
}
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
- ndelay (100);
- /* wait until command is processed */
- while (!this->dev_ready(mtd));
+ ndelay(100);
+
+ nand_wait_ready(mtd);
}
/**
* nand_get_device - [GENERIC] Get chip for selected access
- * @this: the nand chip descriptor
+ * @chip: the nand chip descriptor
* @mtd: MTD device structure
* @new_state: the state which is requested
*
@@ -750,100 +726,96 @@
*/
/* XXX U-BOOT XXX */
#if 0
-static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state)
+static int
+nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state)
{
- struct nand_chip *active = this;
+ spinlock_t *lock = &chip->controller->lock;
+ wait_queue_head_t *wq = &chip->controller->wq;
+ DECLARE_WAITQUEUE(wait, current);
+ retry:
+ spin_lock(lock);
- DECLARE_WAITQUEUE (wait, current);
-
- /*
- * Grab the lock and see if the device is available
- */
-retry:
/* Hardware controller shared among independend devices */
- if (this->controller) {
- spin_lock (&this->controller->lock);
- if (this->controller->active)
- active = this->controller->active;
- else
- this->controller->active = this;
- spin_unlock (&this->controller->lock);
- }
+ /* Hardware controller shared among independend devices */
+ if (!chip->controller->active)
+ chip->controller->active = chip;
- if (active == this) {
- spin_lock (&this->chip_lock);
- if (this->state == FL_READY) {
- this->state = new_state;
- spin_unlock (&this->chip_lock);
- return;
- }
+ if (chip->controller->active == chip && chip->state == FL_READY) {
+ chip->state = new_state;
+ spin_unlock(lock);
+ return 0;
}
- set_current_state (TASK_UNINTERRUPTIBLE);
- add_wait_queue (&active->wq, &wait);
- spin_unlock (&active->chip_lock);
- schedule ();
- remove_wait_queue (&active->wq, &wait);
+ if (new_state == FL_PM_SUSPENDED) {
+ spin_unlock(lock);
+ return (chip->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN;
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ add_wait_queue(wq, &wait);
+ spin_unlock(lock);
+ schedule();
+ remove_wait_queue(wq, &wait);
goto retry;
}
#else
-static void nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) {}
+static int nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state)
+{
+ return 0;
+}
#endif
/**
* nand_wait - [DEFAULT] wait until the command is done
* @mtd: MTD device structure
- * @this: NAND chip structure
- * @state: state to select the max. timeout value
+ * @chip: NAND chip structure
*
* Wait for command done. This applies to erase and program only
* Erase can take up to 400ms and program up to 20ms according to
* general NAND and SmartMedia specs
- *
-*/
+ */
/* XXX U-BOOT XXX */
#if 0
-static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
{
- unsigned long timeo = jiffies;
- int status;
+
+ unsigned long timeo = jiffies;
+ int status, state = chip->state;
if (state == FL_ERASING)
- timeo += (HZ * 400) / 1000;
+ timeo += (HZ * 400) / 1000;
else
- timeo += (HZ * 20) / 1000;
+ timeo += (HZ * 20) / 1000;
+
+ led_trigger_event(nand_led_trigger, LED_FULL);
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
- ndelay (100);
+ ndelay(100);
- if ((state == FL_ERASING) && (this->options & NAND_IS_AND))
- this->cmdfunc (mtd, NAND_CMD_STATUS_MULTI, -1, -1);
+ if ((state == FL_ERASING) && (chip->options & NAND_IS_AND))
+ chip->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1);
else
- this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
+ chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
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))
+ if (chip->dev_ready) {
+ if (chip->dev_ready(mtd))
break;
} else {
- if (this->read_byte(mtd) & NAND_STATUS_READY)
+ if (chip->read_byte(mtd) & NAND_STATUS_READY)
break;
}
- yield ();
+ cond_resched();
}
- status = (int) this->read_byte(mtd);
- return status;
+ led_trigger_event(nand_led_trigger, LED_OFF);
- return 0;
+ status = (int)chip->read_byte(mtd);
+ return status;
}
#else
-static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
+static int nand_wait(struct mtd_info *mtd, struct nand_chip *this)
{
unsigned long timeo;
+ int state = this->state;
if (state == FL_ERASING)
timeo = (CFG_HZ * 400) / 1000;
@@ -881,478 +853,305 @@
#endif
/**
- * nand_write_page - [GENERIC] write one page
- * @mtd: MTD device structure
- * @this: NAND chip structure
- * @page: startpage inside the chip, must be called with (page & this->pagemask)
- * @oob_buf: out of band data buffer
- * @oobsel: out of band selecttion structre
- * @cached: 1 = enable cached programming if supported by chip
- *
- * Nand_page_program function is used for write and writev !
- * This function will always program a full page of data
- * If you call it with a non page aligned buffer, you're lost :)
- *
- * Cached programming is not supported yet.
+ * nand_read_page_raw - [Intern] read raw page data without ecc
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
*/
-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)
+static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf)
{
- int i, status;
- u_char ecc_code[NAND_MAX_OOBSIZE];
- int eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
- uint *oob_config = oobsel->eccpos;
- int datidx = 0, eccidx = 0, eccsteps = this->eccsteps;
- int eccbytes = 0;
+ chip->read_buf(mtd, buf, mtd->writesize);
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ return 0;
+}
- /* FIXME: Enable cached programming */
- cached = 0;
+/**
+ * nand_read_page_swecc - [REPLACABLE] software ecc based page read function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
+ */
+static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+ uint32_t *eccpos = chip->ecc.layout->eccpos;
- /* Send command to begin auto page programming */
- this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page);
+ chip->ecc.read_page_raw(mtd, chip, buf);
- /* Write out complete page of data, take care of eccmode */
- switch (eccmode) {
- /* No ecc, write all */
- case NAND_ECC_NONE:
- printk (KERN_WARNING "Writing data without ECC to NAND-FLASH is not recommended\n");
- this->write_buf(mtd, this->data_poi, mtd->oobblock);
- break;
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+ chip->ecc.calculate(mtd, p, &ecc_calc[i]);
- /* Software ecc 3/256, write all */
- case NAND_ECC_SOFT:
- for (; eccsteps; eccsteps--) {
- this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code);
- for (i = 0; i < 3; i++, eccidx++)
- oob_buf[oob_config[eccidx]] = ecc_code[i];
- datidx += this->eccsize;
- }
- this->write_buf(mtd, this->data_poi, mtd->oobblock);
- break;
- default:
- eccbytes = this->eccbytes;
- for (; eccsteps; eccsteps--) {
- /* enable hardware ecc logic for write */
- this->enable_hwecc(mtd, NAND_ECC_WRITE);
- this->write_buf(mtd, &this->data_poi[datidx], this->eccsize);
- this->calculate_ecc(mtd, &this->data_poi[datidx], ecc_code);
- for (i = 0; i < eccbytes; i++, eccidx++)
- oob_buf[oob_config[eccidx]] = ecc_code[i];
- /* If the hardware ecc provides syndromes then
- * the ecc code must be written immediately after
- * the data bytes (words) */
- if (this->options & NAND_HWECC_SYNDROME)
- this->write_buf(mtd, ecc_code, eccbytes);
- datidx += this->eccsize;
- }
- break;
- }
+ for (i = 0; i < chip->ecc.total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
- /* Write out OOB data */
- if (this->options & NAND_HWECC_SYNDROME)
- this->write_buf(mtd, &oob_buf[oobsel->eccbytes], mtd->oobsize - oobsel->eccbytes);
- else
- this->write_buf(mtd, oob_buf, mtd->oobsize);
+ eccsteps = chip->ecc.steps;
+ p = buf;
- /* Send command to actually program the data */
- this->cmdfunc (mtd, cached ? NAND_CMD_CACHEDPROG : NAND_CMD_PAGEPROG, -1, -1);
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
- if (!cached) {
- /* call wait ready function */
- status = this->waitfunc (mtd, this, FL_WRITING);
- /* See if device thinks it succeeded */
- if (status & 0x01) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "%s: Failed write, page 0x%08x, ",
- __FUNCTION__, page);
- return -EIO;
- }
- } else {
- /* FIXME: Implement cached programming ! */
- /* wait until cache is ready*/
- /* status = this->waitfunc (mtd, this, FL_CACHEDRPG); */
+ stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+ if (stat == -1)
+ mtd->ecc_stats.failed++;
+ else
+ mtd->ecc_stats.corrected += stat;
}
return 0;
}
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
/**
- * nand_verify_pages - [GENERIC] verify the chip contents after a write
- * @mtd: MTD device structure
- * @this: NAND chip structure
- * @page: startpage inside the chip, must be called with (page & this->pagemask)
- * @numpages: number of pages to verify
- * @oob_buf: out of band data buffer
- * @oobsel: out of band selecttion structre
- * @chipnr: number of the current chip
- * @oobmode: 1 = full buffer verify, 0 = ecc only
+ * nand_read_page_hwecc - [REPLACABLE] hardware ecc based page read function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
*
- * 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
- * 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
- * it early in the page write stage. Better to write no data than invalid data.
+ * Not for syndrome calculating ecc controllers which need a special oob layout
*/
-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)
+static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf)
{
- int i, j, datidx = 0, oobofs = 0, res = -EIO;
- int eccsteps = this->eccsteps;
- int hweccbytes;
- u_char oobdata[64];
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *p = buf;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ uint8_t *ecc_code = chip->buffers->ecccode;
+ uint32_t *eccpos = chip->ecc.layout->eccpos;
- hweccbytes = (this->options & NAND_HWECC_SYNDROME) ? (oobsel->eccbytes / eccsteps) : 0;
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ chip->ecc.hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
+ chip->ecc.calculate(mtd, p, &ecc_calc[i]);
+ }
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
- /* Send command to read back the first page */
- this->cmdfunc (mtd, NAND_CMD_READ0, 0, page);
+ for (i = 0; i < chip->ecc.total; i++)
+ ecc_code[i] = chip->oob_poi[eccpos[i]];
- for(;;) {
- for (j = 0; j < eccsteps; j++) {
- /* Loop through and verify the data */
- if (this->verify_buf(mtd, &this->data_poi[datidx], mtd->eccsize)) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "%s: "
- "Failed write verify, page 0x%08x ",
- __FUNCTION__, page);
- goto out;
- }
- datidx += mtd->eccsize;
- /* Have we a hw generator layout ? */
- if (!hweccbytes)
- continue;
- if (this->verify_buf(mtd, &this->oob_buf[oobofs], hweccbytes)) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "%s: "
- "Failed write verify, page 0x%08x ",
- __FUNCTION__, page);
- goto out;
- }
- oobofs += hweccbytes;
+ eccsteps = chip->ecc.steps;
+ p = buf;
+
+ for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+ stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
+ if (stat == -1)
+ mtd->ecc_stats.failed++;
+ else
+ mtd->ecc_stats.corrected += stat;
+ }
+ return 0;
+}
+
+/**
+ * nand_read_page_syndrome - [REPLACABLE] hardware ecc syndrom based page read
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: buffer to store read data
+ *
+ * The hw generator calculates the error syndrome automatically. Therefor
+ * we need a special oob layout and handling.
+ */
+static int nand_read_page_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ uint8_t *buf)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ int stat;
+
+ chip->ecc.hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
+
+ if (chip->ecc.prepad) {
+ chip->read_buf(mtd, oob, chip->ecc.prepad);
+ oob += chip->ecc.prepad;
}
- /* check, if we must compare all data or if we just have to
- * compare the ecc bytes
- */
- if (oobmode) {
- if (this->verify_buf(mtd, &oob_buf[oobofs], mtd->oobsize - hweccbytes * eccsteps)) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "%s: "
- "Failed write verify, page 0x%08x ",
- __FUNCTION__, page);
- goto out;
+ chip->ecc.hwctl(mtd, NAND_ECC_READSYN);
+ chip->read_buf(mtd, oob, eccbytes);
+ stat = chip->ecc.correct(mtd, p, oob, NULL);
+
+ if (stat == -1)
+ mtd->ecc_stats.failed++;
+ else
+ mtd->ecc_stats.corrected += stat;
+
+ oob += eccbytes;
+
+ if (chip->ecc.postpad) {
+ chip->read_buf(mtd, oob, chip->ecc.postpad);
+ oob += chip->ecc.postpad;
+ }
+ }
+
+ /* Calculate remaining oob bytes */
+ i = mtd->oobsize - (oob - chip->oob_poi);
+ if (i)
+ chip->read_buf(mtd, oob, i);
+
+ return 0;
+}
+
+/**
+ * nand_transfer_oob - [Internal] Transfer oob to client buffer
+ * @chip: nand chip structure
+ * @oob: oob destination address
+ * @ops: oob ops structure
+ * @len: size of oob to transfer
+ */
+static uint8_t *nand_transfer_oob(struct nand_chip *chip, uint8_t *oob,
+ struct mtd_oob_ops *ops, size_t len)
+{
+ switch(ops->mode) {
+
+ case MTD_OOB_PLACE:
+ case MTD_OOB_RAW:
+ memcpy(oob, chip->oob_poi + ops->ooboffs, len);
+ return oob + len;
+
+ case MTD_OOB_AUTO: {
+ struct nand_oobfree *free = chip->ecc.layout->oobfree;
+ uint32_t boffs = 0, roffs = ops->ooboffs;
+ size_t bytes = 0;
+
+ for(; free->length && len; free++, len -= bytes) {
+ /* Read request not from offset 0 ? */
+ if (unlikely(roffs)) {
+ if (roffs >= free->length) {
+ roffs -= free->length;
+ continue;
+ }
+ boffs = free->offset + roffs;
+ bytes = min_t(size_t, len,
+ (free->length - roffs));
+ roffs = 0;
+ } else {
+ bytes = min_t(size_t, len, free->length);
+ boffs = free->offset;
+ }
+ memcpy(oob, chip->oob_poi + boffs, bytes);
+ oob += bytes;
+ }
+ return oob;
+ }
+ default:
+ BUG();
+ }
+ return NULL;
+}
+
+/**
+ * nand_do_read_ops - [Internal] Read data with ECC
+ *
+ * @mtd: MTD device structure
+ * @from: offset to read from
+ * @ops: oob ops structure
+ *
+ * Internal function. Called with chip held.
+ */
+static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ int chipnr, page, realpage, col, bytes, aligned;
+ struct nand_chip *chip = mtd->priv;
+ struct mtd_ecc_stats stats;
+ int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+ int sndcmd = 1;
+ int ret = 0;
+ uint32_t readlen = ops->len;
+ uint32_t oobreadlen = ops->ooblen;
+ uint8_t *bufpoi, *oob, *buf;
+
+ stats = mtd->ecc_stats;
+
+ chipnr = (int)(from >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
+
+ realpage = (int)(from >> chip->page_shift);
+ page = realpage & chip->pagemask;
+
+ col = (int)(from & (mtd->writesize - 1));
+
+ buf = ops->datbuf;
+ oob = ops->oobbuf;
+
+ while(1) {
+ bytes = min(mtd->writesize - col, readlen);
+ aligned = (bytes == mtd->writesize);
+
+ /* Is the current page in the buffer ? */
+ if (realpage != chip->pagebuf || oob) {
+ bufpoi = aligned ? buf : chip->buffers->databuf;
+
+ if (likely(sndcmd)) {
+ chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
+ sndcmd = 0;
+ }
+
+ /* Now read the page into the buffer */
+ if (unlikely(ops->mode == MTD_OOB_RAW))
+ ret = chip->ecc.read_page_raw(mtd, chip, bufpoi);
+ else
+ ret = chip->ecc.read_page(mtd, chip, bufpoi);
+ if (ret < 0)
+ break;
+
+ /* Transfer not aligned data */
+ if (!aligned) {
+ chip->pagebuf = realpage;
+ memcpy(buf, chip->buffers->databuf + col, bytes);
+ }
+
+ buf += bytes;
+
+ if (unlikely(oob)) {
+ /* Raw mode does data:oob:data:oob */
+ if (ops->mode != MTD_OOB_RAW) {
+ int toread = min(oobreadlen,
+ chip->ecc.layout->oobavail);
+ if (toread) {
+ oob = nand_transfer_oob(chip,
+ oob, ops, toread);
+ oobreadlen -= toread;
+ }
+ } else
+ buf = nand_transfer_oob(chip,
+ buf, ops, mtd->oobsize);
+ }
+
+ if (!(chip->options & NAND_NO_READRDY)) {
+ /*
+ * 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 (!chip->dev_ready)
+ udelay(chip->chip_delay);
+ else
+ nand_wait_ready(mtd);
}
} else {
- /* Read always, else autoincrement fails */
- this->read_buf(mtd, oobdata, mtd->oobsize - hweccbytes * eccsteps);
-
- 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] ) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "%s: Failed ECC write "
- "verify, page 0x%08x, "
- "%6i bytes were succesful\n",
- __FUNCTION__, page, i);
- goto out;
- }
- }
- }
- }
- oobofs += mtd->oobsize - hweccbytes * eccsteps;
- page++;
- numpages--;
-
- /* 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)
- udelay (this->chip_delay);
- else
- while (!this->dev_ready(mtd));
-
- /* All done, return happy */
- if (!numpages)
- return 0;
-
-
- /* 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:
- this->cmdfunc (mtd, NAND_CMD_RESET, -1, -1);
- return res;
-}
-#endif
-
-/**
- * nand_read - [MTD Interface] MTD compability function for nand_read_ecc
- * @mtd: MTD device structure
- * @from: offset to read from
- * @len: number of bytes to read
- * @retlen: pointer to variable to store the number of read bytes
- * @buf: the databuffer to put data
- *
- * This function simply calls nand_read_ecc with oob buffer and oobsel = NULL
-*/
-static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
-{
- return nand_read_ecc (mtd, from, len, retlen, buf, NULL, NULL);
-}
-
-
-/**
- * nand_read_ecc - [MTD Interface] Read data with ECC
- * @mtd: MTD device structure
- * @from: offset to read from
- * @len: number of bytes to read
- * @retlen: pointer to variable to store the number of read bytes
- * @buf: the databuffer to put data
- * @oob_buf: filesystem supplied oob data buffer
- * @oobsel: oob selection structure
- *
- * NAND read with ECC
- */
-static int nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * oob_buf, struct nand_oobinfo *oobsel)
-{
- int i, j, col, realpage, page, end, ecc, chipnr, sndcmd = 1;
- int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
- struct nand_chip *this = mtd->priv;
- u_char *data_poi, *oob_data = oob_buf;
- u_char ecc_calc[NAND_MAX_OOBSIZE];
- u_char ecc_code[NAND_MAX_OOBSIZE];
- int eccmode, eccsteps;
- unsigned *oob_config;
- int datidx;
- int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
- int eccbytes;
- int compareecc = 1;
- int oobreadlen;
-
-
- MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n",
- (unsigned int) from, (int) len);
-
- /* Do not allow reads past end of device */
- if ((from + len) > mtd->size) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_read_ecc: Attempt read beyond end of device\n");
- *retlen = 0;
- return -EINVAL;
- }
-
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd ,FL_READING);
-
- /* use userspace supplied oobinfo, if zero */
- if (oobsel == NULL)
- oobsel = &mtd->oobinfo;
-
- /* Autoplace of oob data ? Use the default placement scheme */
- if (oobsel->useecc == MTD_NANDECC_AUTOPLACE)
- oobsel = this->autooob;
-
- eccmode = oobsel->useecc ? this->eccmode : NAND_ECC_NONE;
- oob_config = oobsel->eccpos;
-
- /* Select the NAND device */
- chipnr = (int)(from >> this->chip_shift);
- this->select_chip(mtd, chipnr);
-
- /* First we calculate the starting page */
- realpage = (int) (from >> this->page_shift);
- page = realpage & this->pagemask;
-
- /* Get raw starting column */
- col = from & (mtd->oobblock - 1);
-
- 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)
- 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
- data_poi = this->data_buf;
-
- /* 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 (realpage == this->pagebuf && !oob_buf) {
- /* aligned read ? */
- if (aligned)
- memcpy (data_poi, this->data_buf, end);
- goto readdata;
+ memcpy(buf, chip->buffers->databuf + col, bytes);
+ buf += bytes;
}
- /* Check, if we must send the read command */
- if (sndcmd) {
- this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
- sndcmd = 0;
- }
+ readlen -= bytes;
- /* get oob area, if we have no oob buffer from fs-driver */
- if (!oob_buf || oobsel->useecc == MTD_NANDECC_AUTOPLACE ||
- oobsel->useecc == MTD_NANDECC_AUTOPL_USR)
- oob_data = &this->data_buf[end];
-
- eccsteps = this->eccsteps;
-
- switch (eccmode) {
- case NAND_ECC_NONE: { /* No ECC, Read in a page */
-/* XXX U-BOOT XXX */
-#if 0
- static unsigned long lastwhinge = 0;
- if ((lastwhinge / HZ) != (jiffies / HZ)) {
- printk (KERN_WARNING "Reading data from NAND FLASH without ECC is not recommended\n");
- lastwhinge = jiffies;
- }
-#else
- puts("Reading data from NAND FLASH without ECC is not recommended\n");
-#endif
- 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)
- this->calculate_ecc(mtd, &data_poi[datidx], &ecc_calc[i]);
- break;
-
- default:
- for (i = 0, datidx = 0; eccsteps; eccsteps--, i+=eccbytes, datidx += ecc) {
- this->enable_hwecc(mtd, NAND_ECC_READ);
- this->read_buf(mtd, &data_poi[datidx], ecc);
-
- /* HW ecc with syndrome calculation must read the
- * syndrome from flash immidiately after the data */
- if (!compareecc) {
- /* Some hw ecc generators need to know when the
- * syndrome is read from flash */
- this->enable_hwecc(mtd, NAND_ECC_READSYN);
- this->read_buf(mtd, &oob_data[i], eccbytes);
- /* We calc error correction directly, it checks the hw
- * generator for an error, reads back the syndrome and
- * does the error correction on the fly */
- if (this->correct_data(mtd, &data_poi[datidx], &oob_data[i], &ecc_code[i]) == -1) {
- MTDDEBUG (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;
- }
-
- /* read oobdata */
- this->read_buf(mtd, &oob_data[mtd->oobsize - oobreadlen], oobreadlen);
-
- /* Skip ECC check, if not requested (ECC_NONE or HW_ECC with syndromes) */
- if (!compareecc)
- 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,
- * This is the legacy mode. Used by YAFFS1
- * Should go away some day
- */
- if (oob_buf && oobsel->useecc == MTD_NANDECC_PLACE) {
- int *p = (int *)(&oob_data[mtd->oobsize]);
- p[i] = ecc_status;
- }
-
- if (ecc_status == -1) {
- MTDDEBUG (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 */
- if (oob_buf) {
- /* without autoplace. Legacy mode used by YAFFS1 */
- switch(oobsel->useecc) {
- case MTD_NANDECC_AUTOPLACE:
- case MTD_NANDECC_AUTOPL_USR:
- /* Walk through the autoplace chunks */
- for (i = 0, j = 0; j < mtd->oobavail; i++) {
- int from = oobsel->oobfree[i][0];
- int num = oobsel->oobfree[i][1];
- memcpy(&oob_buf[oob+j], &oob_data[from], num);
- j+= num;
- }
- oob += mtd->oobavail;
- break;
- case MTD_NANDECC_PLACE:
- /* YAFFS1 legacy mode */
- oob_data += this->eccsteps * sizeof (int);
- default:
- oob_data += mtd->oobsize;
- }
- }
- readdata:
- /* Partial page read, transfer data into fs buffer */
- if (!aligned) {
- for (j = col; j < end && read < len; j++)
- buf[read++] = data_poi[j];
- this->pagebuf = realpage;
- } else
- read += mtd->oobblock;
-
- /* 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)
- udelay (this->chip_delay);
- else
- while (!this->dev_ready(mtd));
-
- if (read == len)
+ if (!readlen)
break;
/* For subsequent reads align to page boundary. */
@@ -1360,732 +1159,829 @@
/* Increment page address */
realpage++;
- page = realpage & this->pagemask;
+ page = realpage & chip->pagemask;
/* Check, if we cross a chip boundary */
if (!page) {
chipnr++;
- this->select_chip(mtd, -1);
- this->select_chip(mtd, chipnr);
+ chip->select_chip(mtd, -1);
+ chip->select_chip(mtd, chipnr);
}
+
/* Check, if the chip supports auto page increment
* or if we have hit a block boundary.
- */
- if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
+ */
+ if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck))
sndcmd = 1;
}
- /* Deselect and wake up anyone waiting on the device */
- nand_release_device(mtd);
+ ops->retlen = ops->len - (size_t) readlen;
+ if (oob)
+ ops->oobretlen = ops->ooblen - oobreadlen;
- /*
- * Return success, if no ECC failures, else -EBADMSG
- * fs driver will take care of that, because
- * retlen == desired len and result == -EBADMSG
- */
- *retlen = read;
- return ecc_failed ? -EBADMSG : 0;
+ if (ret)
+ return ret;
+
+ if (mtd->ecc_stats.failed - stats.failed)
+ return -EBADMSG;
+
+ return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0;
}
/**
- * nand_read_oob - [MTD Interface] NAND read out-of-band
+ * nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc
* @mtd: MTD device structure
* @from: offset to read from
* @len: number of bytes to read
* @retlen: pointer to variable to store the number of read bytes
* @buf: the databuffer to put data
*
- * NAND read out-of-band data from the spare area
+ * Get hold of the chip and call nand_do_read
*/
-static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
+static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, uint8_t *buf)
{
- int i, col, page, chipnr;
- struct nand_chip *this = mtd->priv;
- int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
-
- MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n",
- (unsigned int) from, (int) len);
-
- /* 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);
-
- /* Initialize return length value */
- *retlen = 0;
+ struct nand_chip *chip = mtd->priv;
+ int ret;
/* Do not allow reads past end of device */
- if ((from + len) > mtd->size) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_read_oob: Attempt read beyond end of device\n");
- *retlen = 0;
+ if ((from + len) > mtd->size)
return -EINVAL;
- }
+ if (!len)
+ return 0;
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd , FL_READING);
+ nand_get_device(chip, mtd, FL_READING);
- /* Select the NAND device */
- this->select_chip(mtd, chipnr);
+ chip->ops.len = len;
+ chip->ops.datbuf = buf;
+ chip->ops.oobbuf = NULL;
- /* 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 !
- */
- i = 0;
- while (i < len) {
- int thislen = mtd->oobsize - col;
- thislen = min_t(int, thislen, len);
- this->read_buf(mtd, &buf[i], thislen);
- i += thislen;
+ ret = nand_do_read_ops(mtd, from, &chip->ops);
- /* 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)
- udelay (this->chip_delay);
- else
- while (!this->dev_ready(mtd));
+ *retlen = chip->ops.retlen;
- /* Read more ? */
- if (i < len) {
- page++;
- col = 0;
-
- /* Check, if we cross a chip boundary */
- if (!(page & this->pagemask)) {
- chipnr++;
- 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.
- */
- if (!NAND_CANAUTOINCR(this) || !(page & blockcheck)) {
- /* For subsequent page reads set offset to 0 */
- this->cmdfunc (mtd, NAND_CMD_READOOB, 0x0, page & this->pagemask);
- }
- }
- }
-
- /* Deselect and wake up anyone waiting on the device */
- nand_release_device(mtd);
-
- /* Return happy */
- *retlen = len;
- return 0;
-}
-
-/**
- * nand_read_raw - [GENERIC] Read raw data including oob into buffer
- * @mtd: MTD device structure
- * @buf: temporary buffer
- * @from: offset to read from
- * @len: number of bytes to read
- * @ooblen: number of oob data bytes to read
- *
- * Read raw data including oob into buffer
- */
-int nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen)
-{
- struct nand_chip *this = mtd->priv;
- int page = (int) (from >> this->page_shift);
- int chip = (int) (from >> this->chip_shift);
- int sndcmd = 1;
- int cnt = 0;
- int pagesize = mtd->oobblock + mtd->oobsize;
- int blockcheck = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
-
- /* Do not allow reads past end of device */
- if ((from + len) > mtd->size) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_read_raw: Attempt read beyond end of device\n");
- return -EINVAL;
- }
-
- /* Grab the lock and see if the device is available */
- 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;
-
- this->read_buf (mtd, &buf[cnt], pagesize);
-
- len -= pagesize;
- cnt += pagesize;
- page++;
-
- if (!this->dev_ready)
- udelay (this->chip_delay);
- else
- while (!this->dev_ready(mtd));
-
- /* Check, if the chip supports auto page increment */
- if (!NAND_CANAUTOINCR(this) || !(page & blockcheck))
- sndcmd = 1;
- }
-
- /* Deselect and wake up anyone waiting on the device */
- nand_release_device(mtd);
- return 0;
-}
-
-
-/**
- * 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
- * @autoplace: 1 = place given buffer into the oob bytes
- * @numpages: number of pages to prepare
- *
- * Return:
- * 1. Filesystem buffer available and autoplacement is off,
- * return filesystem buffer
- * 2. No filesystem buffer or autoplace is off, return internal
- * buffer
- * 3. Filesystem buffer is given and autoplace selected
- * put data from fs buffer into internal buffer and
- * retrun internal buffer
- *
- * Note: The internal buffer is filled with 0xff. This must
- * be done only once, when no autoplacement happens
- * Autoplacement sets the buffer dirty flag, which
- * forces the 0xff fill before using the buffer again.
- *
-*/
-static u_char * nand_prepare_oobbuf (struct mtd_info *mtd, u_char *fsbuf, struct nand_oobinfo *oobsel,
- int autoplace, int numpages)
-{
- struct nand_chip *this = mtd->priv;
- int i, len, ofs;
-
- /* Zero copy fs supplied buffer */
- if (fsbuf && !autoplace)
- return fsbuf;
-
- /* Check, if the buffer must be filled with ff again */
- 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;
- while (numpages--) {
- for (i = 0, len = 0; len < mtd->oobavail; i++) {
- int to = ofs + oobsel->oobfree[i][0];
- int num = oobsel->oobfree[i][1];
- memcpy (&this->oob_buf[to], fsbuf, num);
- len += num;
- fsbuf += num;
- }
- ofs += mtd->oobavail;
- }
- return this->oob_buf;
-}
-
-#define NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0
-
-/**
- * nand_write - [MTD Interface] compability function for nand_write_ecc
- * @mtd: MTD device structure
- * @to: offset to write to
- * @len: number of bytes to write
- * @retlen: pointer to variable to store the number of written bytes
- * @buf: the data to write
- *
- * This function simply calls nand_write_ecc with oob buffer and oobsel = NULL
- *
-*/
-static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
-{
- return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, NULL));
-}
-
-/**
- * nand_write_ecc - [MTD Interface] NAND write with ECC
- * @mtd: MTD device structure
- * @to: offset to write to
- * @len: number of bytes to write
- * @retlen: pointer to variable to store the number of written bytes
- * @buf: the data to write
- * @eccbuf: filesystem supplied oob data buffer
- * @oobsel: oob selection structure
- *
- * NAND write with ECC
- */
-static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel)
-{
- int startpage, page, ret = -EIO, oob = 0, written = 0, chipnr;
- int autoplace = 0, numpages, totalpages;
- struct nand_chip *this = mtd->priv;
- u_char *oobbuf, *bufstart;
- int ppblock = (1 << (this->phys_erase_shift - this->page_shift));
-
- MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_write_ecc: to = 0x%08x, len = %i\n",
- (unsigned int) to, (int) len);
-
- /* Initialize retlen, in case of early exit */
- *retlen = 0;
-
- /* Do not allow write past end of device */
- if ((to + len) > mtd->size) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_write_ecc: Attempt to write past end of page\n");
- return -EINVAL;
- }
-
- /* 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;
- }
-
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_WRITING);
-
- /* Calculate chipnr */
- chipnr = (int)(to >> this->chip_shift);
- /* Select the NAND device */
- this->select_chip(mtd, chipnr);
-
- /* Check, if it is write protected */
- if (nand_check_wp(mtd)) {
- printk (KERN_NOTICE "nand_write_ecc: Device is write protected\n");
- goto out;
- }
-
- /* if oobsel is NULL, use chip defaults */
- 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 variables and oob buffer */
- 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))
- this->pagebuf = -1;
-
- /* Set it relative to chip */
- page &= this->pagemask;
- startpage = page;
- /* Calc number of pages we can write in one go */
- numpages = min (ppblock - (startpage & (ppblock - 1)), totalpages);
- oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel, autoplace, numpages);
- bufstart = (u_char *)buf;
-
- /* Loop until all data is written */
- while (written < len) {
-
- this->data_poi = (u_char*) &buf[written];
- /* Write one page. If this is the last page to write
- * or the last page in this block, then use the
- * real pageprogram command, else select cached programming
- * if supported by the chip.
- */
- ret = nand_write_page (mtd, this, page, &oobbuf[oob], oobsel, (--numpages > 0));
- if (ret) {
- MTDDEBUG (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)
- goto cmp;
-
- /* Increment page address */
- page++;
-
- /* Have we hit a block boundary ? Then we have to verify and
- * if verify is ok, we have to setup the oob buffer for
- * the next pages.
- */
- if (!(page & (ppblock - 1))){
- int ofs;
- this->data_poi = bufstart;
- ret = nand_verify_pages (mtd, this, startpage,
- page - startpage,
- oobbuf, oobsel, chipnr, (eccbuf != NULL));
- if (ret) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_write_ecc: "
- "verify_pages failed %d\n", ret);
- goto out;
- }
- *retlen = written;
- bufstart = (u_char*) &buf[written];
-
- ofs = autoplace ? mtd->oobavail : mtd->oobsize;
- if (eccbuf)
- eccbuf += (page - startpage) * ofs;
- totalpages -= page - startpage;
- numpages = min (totalpages, ppblock);
- page &= this->pagemask;
- startpage = page;
- oob = 0;
- this->oobdirty = 1;
- oobbuf = nand_prepare_oobbuf (mtd, eccbuf, oobsel,
- autoplace, numpages);
- /* Check, if we cross a chip boundary */
- if (!page) {
- chipnr++;
- this->select_chip(mtd, -1);
- this->select_chip(mtd, chipnr);
- }
- }
- }
- /* Verify the remaining pages */
-cmp:
- this->data_poi = bufstart;
- ret = nand_verify_pages (mtd, this, startpage, totalpages,
- oobbuf, oobsel, chipnr, (eccbuf != NULL));
- if (!ret)
- *retlen = written;
- else
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_write_ecc: verify_pages failed %d\n", ret);
-
-out:
- /* Deselect and wake up anyone waiting on the device */
nand_release_device(mtd);
return ret;
}
+/**
+ * nand_read_oob_std - [REPLACABLE] the most common OOB data read function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @page: page number to read
+ * @sndcmd: flag whether to issue read command or not
+ */
+static int nand_read_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+ int page, int sndcmd)
+{
+ if (sndcmd) {
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+ sndcmd = 0;
+ }
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ return sndcmd;
+}
/**
- * nand_write_oob - [MTD Interface] NAND write out-of-band
+ * nand_read_oob_syndrome - [REPLACABLE] OOB data read function for HW ECC
+ * with syndromes
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @page: page number to read
+ * @sndcmd: flag whether to issue read command or not
+ */
+static int nand_read_oob_syndrome(struct mtd_info *mtd, struct nand_chip *chip,
+ int page, int sndcmd)
+{
+ uint8_t *buf = chip->oob_poi;
+ int length = mtd->oobsize;
+ int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+ int eccsize = chip->ecc.size;
+ uint8_t *bufpoi = buf;
+ int i, toread, sndrnd = 0, pos;
+
+ chip->cmdfunc(mtd, NAND_CMD_READ0, chip->ecc.size, page);
+ for (i = 0; i < chip->ecc.steps; i++) {
+ if (sndrnd) {
+ pos = eccsize + i * (eccsize + chunk);
+ if (mtd->writesize > 512)
+ chip->cmdfunc(mtd, NAND_CMD_RNDOUT, pos, -1);
+ else
+ chip->cmdfunc(mtd, NAND_CMD_READ0, pos, page);
+ } else
+ sndrnd = 1;
+ toread = min_t(int, length, chunk);
+ chip->read_buf(mtd, bufpoi, toread);
+ bufpoi += toread;
+ length -= toread;
+ }
+ if (length > 0)
+ chip->read_buf(mtd, bufpoi, length);
+
+ return 1;
+}
+
+/**
+ * nand_write_oob_std - [REPLACABLE] the most common OOB data write function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @page: page number to write
+ */
+static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip,
+ int page)
+{
+ int status = 0;
+ const uint8_t *buf = chip->oob_poi;
+ int length = mtd->oobsize;
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
+ chip->write_buf(mtd, buf, length);
+ /* Send command to program the OOB data */
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+
+ status = chip->waitfunc(mtd, chip);
+
+ return status & NAND_STATUS_FAIL ? -EIO : 0;
+}
+
+/**
+ * nand_write_oob_syndrome - [REPLACABLE] OOB data write function for HW ECC
+ * with syndrome - only for large page flash !
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @page: page number to write
+ */
+static int nand_write_oob_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip, int page)
+{
+ int chunk = chip->ecc.bytes + chip->ecc.prepad + chip->ecc.postpad;
+ int eccsize = chip->ecc.size, length = mtd->oobsize;
+ int i, len, pos, status = 0, sndcmd = 0, steps = chip->ecc.steps;
+ const uint8_t *bufpoi = chip->oob_poi;
+
+ /*
+ * data-ecc-data-ecc ... ecc-oob
+ * or
+ * data-pad-ecc-pad-data-pad .... ecc-pad-oob
+ */
+ if (!chip->ecc.prepad && !chip->ecc.postpad) {
+ pos = steps * (eccsize + chunk);
+ steps = 0;
+ } else
+ pos = eccsize;
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, pos, page);
+ for (i = 0; i < steps; i++) {
+ if (sndcmd) {
+ if (mtd->writesize <= 512) {
+ uint32_t fill = 0xFFFFFFFF;
+
+ len = eccsize;
+ while (len > 0) {
+ int num = min_t(int, len, 4);
+ chip->write_buf(mtd, (uint8_t *)&fill,
+ num);
+ len -= num;
+ }
+ } else {
+ pos = eccsize + i * (eccsize + chunk);
+ chip->cmdfunc(mtd, NAND_CMD_RNDIN, pos, -1);
+ }
+ } else
+ sndcmd = 1;
+ len = min_t(int, length, chunk);
+ chip->write_buf(mtd, bufpoi, len);
+ bufpoi += len;
+ length -= len;
+ }
+ if (length > 0)
+ chip->write_buf(mtd, bufpoi, length);
+
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+ status = chip->waitfunc(mtd, chip);
+
+ return status & NAND_STATUS_FAIL ? -EIO : 0;
+}
+
+/**
+ * nand_do_read_oob - [Intern] NAND read out-of-band
+ * @mtd: MTD device structure
+ * @from: offset to read from
+ * @ops: oob operations description structure
+ *
+ * NAND read out-of-band data from the spare area
+ */
+static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ int page, realpage, chipnr, sndcmd = 1;
+ struct nand_chip *chip = mtd->priv;
+ int blkcheck = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+ int readlen = ops->ooblen;
+ int len;
+ uint8_t *buf = ops->oobbuf;
+
+ MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08Lx, len = %i\n",
+ (unsigned long long)from, readlen);
+
+ if (ops->mode == MTD_OOB_AUTO)
+ len = chip->ecc.layout->oobavail;
+ else
+ len = mtd->oobsize;
+
+ if (unlikely(ops->ooboffs >= len)) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt to start read outside oob\n");
+ return -EINVAL;
+ }
+
+ /* Do not allow reads past end of device */
+ if (unlikely(from >= mtd->size ||
+ ops->ooboffs + readlen > ((mtd->size >> chip->page_shift) -
+ (from >> chip->page_shift)) * len)) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt read beyond end of device\n");
+ return -EINVAL;
+ }
+
+ chipnr = (int)(from >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
+
+ /* Shift to get page */
+ realpage = (int)(from >> chip->page_shift);
+ page = realpage & chip->pagemask;
+
+ while(1) {
+ sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd);
+
+ len = min(len, readlen);
+ buf = nand_transfer_oob(chip, buf, ops, len);
+
+ if (!(chip->options & NAND_NO_READRDY)) {
+ /*
+ * 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 (!chip->dev_ready)
+ udelay(chip->chip_delay);
+ else
+ nand_wait_ready(mtd);
+ }
+
+ readlen -= len;
+ if (!readlen)
+ break;
+
+ /* Increment page address */
+ realpage++;
+
+ page = realpage & chip->pagemask;
+ /* Check, if we cross a chip boundary */
+ if (!page) {
+ chipnr++;
+ chip->select_chip(mtd, -1);
+ chip->select_chip(mtd, chipnr);
+ }
+
+ /* Check, if the chip supports auto page increment
+ * or if we have hit a block boundary.
+ */
+ if (!NAND_CANAUTOINCR(chip) || !(page & blkcheck))
+ sndcmd = 1;
+ }
+
+ ops->oobretlen = ops->ooblen;
+ return 0;
+}
+
+/**
+ * nand_read_oob - [MTD Interface] NAND read data and/or out-of-band
+ * @mtd: MTD device structure
+ * @from: offset to read from
+ * @ops: oob operation description structure
+ *
+ * NAND read data and/or out-of-band data
+ */
+static int nand_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ struct nand_chip *chip = mtd->priv;
+ int ret = -ENOTSUPP;
+
+ ops->retlen = 0;
+
+ /* Do not allow reads past end of device */
+ if (ops->datbuf && (from + ops->len) > mtd->size) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt read beyond end of device\n");
+ return -EINVAL;
+ }
+
+ nand_get_device(chip, mtd, FL_READING);
+
+ switch(ops->mode) {
+ case MTD_OOB_PLACE:
+ case MTD_OOB_AUTO:
+ case MTD_OOB_RAW:
+ break;
+
+ default:
+ goto out;
+ }
+
+ if (!ops->datbuf)
+ ret = nand_do_read_oob(mtd, from, ops);
+ else
+ ret = nand_do_read_ops(mtd, from, ops);
+
+ out:
+ nand_release_device(mtd);
+ return ret;
+}
+
+
+/**
+ * nand_write_page_raw - [Intern] raw page write function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: data buffer
+ */
+static void nand_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf)
+{
+ chip->write_buf(mtd, buf, mtd->writesize);
+ chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+}
+
+/**
+ * nand_write_page_swecc - [REPLACABLE] software ecc based page write function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: data buffer
+ */
+static void nand_write_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ const uint8_t *p = buf;
+ uint32_t *eccpos = chip->ecc.layout->eccpos;
+
+ /* Software ecc calculation */
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize)
+ chip->ecc.calculate(mtd, p, &ecc_calc[i]);
+
+ for (i = 0; i < chip->ecc.total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+ chip->ecc.write_page_raw(mtd, chip, buf);
+}
+
+/**
+ * nand_write_page_hwecc - [REPLACABLE] hardware ecc based page write function
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: data buffer
+ */
+static void nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ uint8_t *ecc_calc = chip->buffers->ecccalc;
+ const uint8_t *p = buf;
+ uint32_t *eccpos = chip->ecc.layout->eccpos;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
+ chip->write_buf(mtd, p, eccsize);
+ chip->ecc.calculate(mtd, p, &ecc_calc[i]);
+ }
+
+ for (i = 0; i < chip->ecc.total; i++)
+ chip->oob_poi[eccpos[i]] = ecc_calc[i];
+
+ chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
+}
+
+/**
+ * nand_write_page_syndrome - [REPLACABLE] hardware ecc syndrom based page write
+ * @mtd: mtd info structure
+ * @chip: nand chip info structure
+ * @buf: data buffer
+ *
+ * The hw generator calculates the error syndrome automatically. Therefor
+ * we need a special oob layout and handling.
+ */
+static void nand_write_page_syndrome(struct mtd_info *mtd,
+ struct nand_chip *chip, const uint8_t *buf)
+{
+ int i, eccsize = chip->ecc.size;
+ int eccbytes = chip->ecc.bytes;
+ int eccsteps = chip->ecc.steps;
+ const uint8_t *p = buf;
+ uint8_t *oob = chip->oob_poi;
+
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+
+ chip->ecc.hwctl(mtd, NAND_ECC_WRITE);
+ chip->write_buf(mtd, p, eccsize);
+
+ if (chip->ecc.prepad) {
+ chip->write_buf(mtd, oob, chip->ecc.prepad);
+ oob += chip->ecc.prepad;
+ }
+
+ chip->ecc.calculate(mtd, p, oob);
+ chip->write_buf(mtd, oob, eccbytes);
+ oob += eccbytes;
+
+ if (chip->ecc.postpad) {
+ chip->write_buf(mtd, oob, chip->ecc.postpad);
+ oob += chip->ecc.postpad;
+ }
+ }
+
+ /* Calculate remaining oob bytes */
+ i = mtd->oobsize - (oob - chip->oob_poi);
+ if (i)
+ chip->write_buf(mtd, oob, i);
+}
+
+/**
+ * nand_write_page - [REPLACEABLE] write one page
+ * @mtd: MTD device structure
+ * @chip: NAND chip descriptor
+ * @buf: the data to write
+ * @page: page number to write
+ * @cached: cached programming
+ * @raw: use _raw version of write_page
+ */
+static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
+ const uint8_t *buf, int page, int cached, int raw)
+{
+ int status;
+
+ chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
+
+ if (unlikely(raw))
+ chip->ecc.write_page_raw(mtd, chip, buf);
+ else
+ chip->ecc.write_page(mtd, chip, buf);
+
+ /*
+ * Cached progamming disabled for now, Not sure if its worth the
+ * trouble. The speed gain is not very impressive. (2.3->2.6Mib/s)
+ */
+ cached = 0;
+
+ if (!cached || !(chip->options & NAND_CACHEPRG)) {
+
+ chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
+ status = chip->waitfunc(mtd, chip);
+ /*
+ * See if operation failed and additional status checks are
+ * available
+ */
+ if ((status & NAND_STATUS_FAIL) && (chip->errstat))
+ status = chip->errstat(mtd, chip, FL_WRITING, status,
+ page);
+
+ if (status & NAND_STATUS_FAIL)
+ return -EIO;
+ } else {
+ chip->cmdfunc(mtd, NAND_CMD_CACHEDPROG, -1, -1);
+ status = chip->waitfunc(mtd, chip);
+ }
+
+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
+ /* Send command to read back the data */
+ chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page);
+
+ if (chip->verify_buf(mtd, buf, mtd->writesize))
+ return -EIO;
+#endif
+ return 0;
+}
+
+/**
+ * nand_fill_oob - [Internal] Transfer client buffer to oob
+ * @chip: nand chip structure
+ * @oob: oob data buffer
+ * @ops: oob ops structure
+ */
+static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob,
+ struct mtd_oob_ops *ops)
+{
+ size_t len = ops->ooblen;
+
+ switch(ops->mode) {
+
+ case MTD_OOB_PLACE:
+ case MTD_OOB_RAW:
+ memcpy(chip->oob_poi + ops->ooboffs, oob, len);
+ return oob + len;
+
+ case MTD_OOB_AUTO: {
+ struct nand_oobfree *free = chip->ecc.layout->oobfree;
+ uint32_t boffs = 0, woffs = ops->ooboffs;
+ size_t bytes = 0;
+
+ for(; free->length && len; free++, len -= bytes) {
+ /* Write request not from offset 0 ? */
+ if (unlikely(woffs)) {
+ if (woffs >= free->length) {
+ woffs -= free->length;
+ continue;
+ }
+ boffs = free->offset + woffs;
+ bytes = min_t(size_t, len,
+ (free->length - woffs));
+ woffs = 0;
+ } else {
+ bytes = min_t(size_t, len, free->length);
+ boffs = free->offset;
+ }
+ memcpy(chip->oob_poi + boffs, oob, bytes);
+ oob += bytes;
+ }
+ return oob;
+ }
+ default:
+ BUG();
+ }
+ return NULL;
+}
+
+#define NOTALIGNED(x) (x & (chip->subpagesize - 1)) != 0
+
+/**
+ * nand_do_write_ops - [Internal] NAND write with ECC
+ * @mtd: MTD device structure
+ * @to: offset to write to
+ * @ops: oob operations description structure
+ *
+ * NAND write with ECC
+ */
+static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
+{
+ int chipnr, realpage, page, blockmask, column;
+ struct nand_chip *chip = mtd->priv;
+ uint32_t writelen = ops->len;
+ uint8_t *oob = ops->oobbuf;
+ uint8_t *buf = ops->datbuf;
+ int ret, subpage;
+
+ ops->retlen = 0;
+ if (!writelen)
+ return 0;
+
+ /* reject writes, which are not page aligned */
+ if (NOTALIGNED(to) || NOTALIGNED(ops->len)) {
+ printk(KERN_NOTICE "nand_write: "
+ "Attempt to write not page aligned data\n");
+ return -EINVAL;
+ }
+
+ column = to & (mtd->writesize - 1);
+ subpage = column || (writelen & (mtd->writesize - 1));
+
+ if (subpage && oob)
+ return -EINVAL;
+
+ chipnr = (int)(to >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
+
+ /* Check, if it is write protected */
+ if (nand_check_wp(mtd)) {
+ printk (KERN_NOTICE "nand_do_write_ops: Device is write protected\n");
+ return -EIO;
+ }
+
+ realpage = (int)(to >> chip->page_shift);
+ page = realpage & chip->pagemask;
+ blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+
+ /* Invalidate the page cache, when we write to the cached page */
+ if (to <= (chip->pagebuf << chip->page_shift) &&
+ (chip->pagebuf << chip->page_shift) < (to + ops->len))
+ chip->pagebuf = -1;
+
+ /* If we're not given explicit OOB data, let it be 0xFF */
+ if (likely(!oob))
+ memset(chip->oob_poi, 0xff, mtd->oobsize);
+
+ while(1) {
+ int bytes = mtd->writesize;
+ int cached = writelen > bytes && page != blockmask;
+ uint8_t *wbuf = buf;
+
+ /* Partial page write ? */
+ if (unlikely(column || writelen < (mtd->writesize - 1))) {
+ cached = 0;
+ bytes = min_t(int, bytes - column, (int) writelen);
+ chip->pagebuf = -1;
+ memset(chip->buffers->databuf, 0xff, mtd->writesize);
+ memcpy(&chip->buffers->databuf[column], buf, bytes);
+ wbuf = chip->buffers->databuf;
+ }
+
+ if (unlikely(oob))
+ oob = nand_fill_oob(chip, oob, ops);
+
+ ret = chip->write_page(mtd, chip, wbuf, page, cached,
+ (ops->mode == MTD_OOB_RAW));
+ if (ret)
+ break;
+
+ writelen -= bytes;
+ if (!writelen)
+ break;
+
+ column = 0;
+ buf += bytes;
+ realpage++;
+
+ page = realpage & chip->pagemask;
+ /* Check, if we cross a chip boundary */
+ if (!page) {
+ chipnr++;
+ chip->select_chip(mtd, -1);
+ chip->select_chip(mtd, chipnr);
+ }
+ }
+
+ ops->retlen = ops->len - writelen;
+ if (unlikely(oob))
+ ops->oobretlen = ops->ooblen;
+ return ret;
+}
+
+/**
+ * nand_write - [MTD Interface] NAND write with ECC
* @mtd: MTD device structure
* @to: offset to write to
* @len: number of bytes to write
* @retlen: pointer to variable to store the number of written bytes
* @buf: the data to write
*
+ * NAND write with ECC
+ */
+static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const uint8_t *buf)
+{
+ struct nand_chip *chip = mtd->priv;
+ int ret;
+
+ /* Do not allow reads past end of device */
+ if ((to + len) > mtd->size)
+ return -EINVAL;
+ if (!len)
+ return 0;
+
+ nand_get_device(chip, mtd, FL_WRITING);
+
+ chip->ops.len = len;
+ chip->ops.datbuf = (uint8_t *)buf;
+ chip->ops.oobbuf = NULL;
+
+ ret = nand_do_write_ops(mtd, to, &chip->ops);
+
+ *retlen = chip->ops.retlen;
+
+ nand_release_device(mtd);
+
+ return ret;
+}
+
+/**
+ * nand_do_write_oob - [MTD Interface] NAND write out-of-band
+ * @mtd: MTD device structure
+ * @to: offset to write to
+ * @ops: oob operation description structure
+ *
* NAND write out-of-band
*/
-static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
+static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
{
- int column, page, status, ret = -EIO, chipnr;
- struct nand_chip *this = mtd->priv;
+ int chipnr, page, status, len;
+ struct nand_chip *chip = mtd->priv;
MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_write_oob: to = 0x%08x, len = %i\n",
- (unsigned int) to, (int) len);
+ (unsigned int)to, (int)ops->ooblen);
- /* Shift to get page */
- page = (int) (to >> this->page_shift);
- chipnr = (int) (to >> this->chip_shift);
-
- /* Mask to get column */
- column = to & (mtd->oobsize - 1);
-
- /* Initialize return length value */
- *retlen = 0;
+ if (ops->mode == MTD_OOB_AUTO)
+ len = chip->ecc.layout->oobavail;
+ else
+ len = mtd->oobsize;
/* Do not allow write past end of page */
- if ((column + len) > mtd->oobsize) {
+ if ((ops->ooboffs + ops->ooblen) > len) {
MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
"Attempt to write past end of page\n");
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_WRITING);
-
- /* Select the NAND device */
- this->select_chip(mtd, chipnr);
-
- /* Reset the chip. Some chips (like the Toshiba TC5832DC found
- in one of my DiskOnChip 2000 test units) will clear the whole
- data page too if we don't do this. I have no clue why, but
- I seem to have 'fixed' it in the doc2000 driver in
- August 1999. dwmw2. */
- this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
-
- /* 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;
-
- if (NAND_MUST_PAD(this)) {
- /* Write out desired data */
- this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page & this->pagemask);
- if (!ffchars) {
- if (!(ffchars = kmalloc (mtd->oobsize, GFP_KERNEL))) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
- "No memory for padding array, "
- "need %d bytes", mtd->oobsize);
- ret = -ENOMEM;
- goto out;
- }
- memset(ffchars, 0xff, mtd->oobsize);
- }
- /* prepad 0xff for partial programming */
- this->write_buf(mtd, ffchars, column);
- /* write data */
- this->write_buf(mtd, buf, len);
- /* postpad 0xff for partial programming */
- this->write_buf(mtd, ffchars, mtd->oobsize - (len+column));
- } else {
- /* Write out desired data */
- this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock + column, page & this->pagemask);
- /* write data */
- this->write_buf(mtd, buf, len);
- }
- /* Send command to program the OOB data */
- this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1);
-
- status = this->waitfunc (mtd, this, FL_WRITING);
-
- /* See if device thinks it succeeded */
- if (status & 0x01) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
- "Failed write, page 0x%08x\n", page);
- ret = -EIO;
- goto out;
- }
- /* Return happy */
- *retlen = len;
-
-#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
- /* Send command to read back the data */
- this->cmdfunc (mtd, NAND_CMD_READOOB, column, page & this->pagemask);
-
- if (this->verify_buf(mtd, buf, len)) {
- MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_write_oob: "
- "Failed write verify, page 0x%08x\n", page);
- ret = -EIO;
- goto out;
- }
-#endif
- ret = 0;
-out:
- /* Deselect and wake up anyone waiting on the device */
- nand_release_device(mtd);
-
- return ret;
-}
-
-/* XXX U-BOOT XXX */
-#if 0
-/**
- * nand_writev - [MTD Interface] compabilty function for nand_writev_ecc
- * @mtd: MTD device structure
- * @vecs: the iovectors to write
- * @count: number of vectors
- * @to: offset to write to
- * @retlen: pointer to variable to store the number of written bytes
- *
- * 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,
- loff_t to, size_t * retlen)
-{
- return (nand_writev_ecc (mtd, vecs, count, to, retlen, NULL, NULL));
-}
-
-/**
- * nand_writev_ecc - [MTD Interface] write with iovec with ecc
- * @mtd: MTD device structure
- * @vecs: the iovectors to write
- * @count: number of vectors
- * @to: offset to write to
- * @retlen: pointer to variable to store the number of written bytes
- * @eccbuf: filesystem supplied oob data buffer
- * @oobsel: oob selection structure
- *
- * NAND write with iovec with ecc
- */
-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;
- int oob, numpages, autoplace = 0, startpage;
- struct nand_chip *this = mtd->priv;
- int ppblock = (1 << (this->phys_erase_shift - this->page_shift));
- u_char *oobbuf, *bufstart;
-
- /* Preset written len for early exit */
- *retlen = 0;
-
- /* Calculate total length of data */
- total_len = 0;
- for (i = 0; i < count; i++)
- total_len += (int) vecs[i].iov_len;
-
- MTDDEBUG (MTD_DEBUG_LEVEL3,
- "nand_writev: to = 0x%08x, len = %i, count = %ld\n",
- (unsigned int) to, (unsigned int) total_len, count);
-
- /* Do not allow write past end of page */
- if ((to + total_len) > mtd->size) {
- MTDDEBUG (MTD_DEBUG_LEVEL0,
- "nand_writev: Attempted write past end of device\n");
+ if (unlikely(ops->ooboffs >= len)) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt to start write outside oob\n");
return -EINVAL;
}
- /* 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");
+ /* Do not allow reads past end of device */
+ if (unlikely(to >= mtd->size ||
+ ops->ooboffs + ops->ooblen >
+ ((mtd->size >> chip->page_shift) -
+ (to >> chip->page_shift)) * len)) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt write beyond end of device\n");
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_WRITING);
+ chipnr = (int)(to >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
- /* Get the current chip-nr */
- chipnr = (int) (to >> this->chip_shift);
- /* Select the NAND device */
- this->select_chip(mtd, chipnr);
+ /* Shift to get page */
+ page = (int)(to >> chip->page_shift);
+
+ /*
+ * Reset the chip. Some chips (like the Toshiba TC5832DC found in one
+ * of my DiskOnChip 2000 test units) will clear the whole data page too
+ * if we don't do this. I have no clue why, but I seem to have 'fixed'
+ * it in the doc2000 driver in August 1999. dwmw2.
+ */
+ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
/* Check, if it is write protected */
if (nand_check_wp(mtd))
- goto out;
+ return -EROFS;
- /* if oobsel is NULL, use chip defaults */
- 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))
- this->pagebuf = -1;
+ if (page == chip->pagebuf)
+ chip->pagebuf = -1;
- startpage = page & this->pagemask;
+ memset(chip->oob_poi, 0xff, mtd->oobsize);
+ nand_fill_oob(chip, ops->oobbuf, ops);
+ status = chip->ecc.write_oob(mtd, chip, page & chip->pagemask);
+ memset(chip->oob_poi, 0xff, mtd->oobsize);
- /* Loop until all kvec' data has been written */
- len = 0;
- while (count) {
- /* If the given tuple is >= pagesize then
- * write it out from the iov
- */
- if ((vecs->iov_len - len) >= mtd->oobblock) {
- /* Calc number of pages we can write
- * out of this iov in one go */
- numpages = (vecs->iov_len - len) >> this->page_shift;
- /* Do not cross block boundaries */
- numpages = min (ppblock - (startpage & (ppblock - 1)), numpages);
- oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages);
- bufstart = (u_char *)vecs->iov_base;
- bufstart += len;
- this->data_poi = bufstart;
- 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
- * cached programming if supported by the chip.
- */
- ret = nand_write_page (mtd, this, page & this->pagemask,
- &oobbuf[oob], oobsel, i != numpages);
- if (ret)
- goto out;
- this->data_poi += mtd->oobblock;
- len += mtd->oobblock;
- oob += mtd->oobsize;
- page++;
- }
- /* Check, if we have to switch to the next tuple */
- if (len >= (int) vecs->iov_len) {
- vecs++;
- len = 0;
- count--;
- }
- } else {
- /* 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)
- 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) {
- vecs++;
- len = 0;
- count--;
- }
- }
- this->pagebuf = page;
- this->data_poi = this->data_buf;
- bufstart = this->data_poi;
- numpages = 1;
- oobbuf = nand_prepare_oobbuf (mtd, NULL, oobsel, autoplace, numpages);
- ret = nand_write_page (mtd, this, page & this->pagemask,
- oobbuf, oobsel, 0);
- if (ret)
- goto out;
- page++;
- }
+ if (status)
+ return status;
- this->data_poi = bufstart;
- ret = nand_verify_pages (mtd, this, startpage, numpages, oobbuf, oobsel, chipnr, 0);
- if (ret)
- goto out;
+ ops->oobretlen = ops->ooblen;
- written += mtd->oobblock * numpages;
- /* All done ? */
- if (!count)
- break;
+ return 0;
+}
- startpage = page & this->pagemask;
- /* Check, if we cross a chip boundary */
- if (!startpage) {
- chipnr++;
- this->select_chip(mtd, -1);
- this->select_chip(mtd, chipnr);
- }
+/**
+ * nand_write_oob - [MTD Interface] NAND write data and/or out-of-band
+ * @mtd: MTD device structure
+ * @to: offset to write to
+ * @ops: oob operation description structure
+ */
+static int nand_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
+{
+ struct nand_chip *chip = mtd->priv;
+ int ret = -ENOTSUPP;
+
+ ops->retlen = 0;
+
+ /* Do not allow writes past end of device */
+ if (ops->datbuf && (to + ops->len) > mtd->size) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: "
+ "Attempt read beyond end of device\n");
+ return -EINVAL;
}
- ret = 0;
-out:
- /* Deselect and wake up anyone waiting on the device */
- nand_release_device(mtd);
- *retlen = written;
+ nand_get_device(chip, mtd, FL_WRITING);
+
+ switch(ops->mode) {
+ case MTD_OOB_PLACE:
+ case MTD_OOB_AUTO:
+ case MTD_OOB_RAW:
+ break;
+
+ default:
+ goto out;
+ }
+
+ if (!ops->datbuf)
+ ret = nand_do_write_oob(mtd, to, ops);
+ else
+ ret = nand_do_write_ops(mtd, to, ops);
+
+ out:
+ nand_release_device(mtd);
return ret;
}
-#endif
/**
* single_erease_cmd - [GENERIC] NAND standard block erase command function
@@ -2094,12 +1990,12 @@
*
* Standard erase command for NAND chips
*/
-static void single_erase_cmd (struct mtd_info *mtd, int page)
+static void single_erase_cmd(struct mtd_info *mtd, int page)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
/* Send commands to erase a block */
- this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page);
- this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
}
/**
@@ -2110,15 +2006,15 @@
* AND multi block erase command function
* Erase 4 consecutive blocks
*/
-static void multi_erase_cmd (struct mtd_info *mtd, int page)
+static void multi_erase_cmd(struct mtd_info *mtd, int page)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
/* Send commands to erase a block */
- this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
- this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
- this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page++);
- this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page);
- this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page++);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
+ chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
}
/**
@@ -2128,35 +2024,39 @@
*
* Erase one ore more blocks
*/
-static int nand_erase (struct mtd_info *mtd, struct erase_info *instr)
+static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
{
- return nand_erase_nand (mtd, instr, 0);
+ return nand_erase_nand(mtd, instr, 0);
}
+#define BBT_PAGE_MASK 0xffffff3f
/**
- * nand_erase_intern - [NAND Interface] erase block(s)
+ * nand_erase_nand - [Internal] erase block(s)
* @mtd: MTD device structure
* @instr: erase instruction
* @allowbbt: allow erasing the bbt area
*
* Erase one ore more blocks
*/
-int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt)
+int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
+ int allowbbt)
{
int page, len, status, pages_per_block, ret, chipnr;
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
+ int rewrite_bbt[NAND_MAX_CHIPS]={0};
+ unsigned int bbt_masked_page = 0xffffffff;
MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n",
(unsigned int) instr->addr, (unsigned int) instr->len);
/* Start address must align on block boundary */
- if (instr->addr & ((1 << this->phys_erase_shift) - 1)) {
+ if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) {
MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_erase: Unaligned address\n");
return -EINVAL;
}
/* Length must align on block boundary */
- if (instr->len & ((1 << this->phys_erase_shift) - 1)) {
+ if (instr->len & ((1 << chip->phys_erase_shift) - 1)) {
MTDDEBUG (MTD_DEBUG_LEVEL0,
"nand_erase: Length not block aligned\n");
return -EINVAL;
@@ -2172,19 +2072,18 @@
instr->fail_addr = 0xffffffff;
/* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_ERASING);
+ nand_get_device(chip, mtd, FL_ERASING);
/* Shift to get first page */
- page = (int) (instr->addr >> this->page_shift);
- chipnr = (int) (instr->addr >> this->chip_shift);
+ page = (int)(instr->addr >> chip->page_shift);
+ chipnr = (int)(instr->addr >> chip->chip_shift);
/* Calculate pages in each block */
- pages_per_block = 1 << (this->phys_erase_shift - this->page_shift);
-
+ pages_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
+
/* Select the NAND device */
- this->select_chip(mtd, chipnr);
+ chip->select_chip(mtd, chipnr);
- /* Check the WP bit */
/* Check, if it is write protected */
if (nand_check_wp(mtd)) {
MTDDEBUG (MTD_DEBUG_LEVEL0,
@@ -2193,52 +2092,92 @@
goto erase_exit;
}
+ /*
+ * If BBT requires refresh, set the BBT page mask to see if the BBT
+ * should be rewritten. Otherwise the mask is set to 0xffffffff which
+ * can not be matched. This is also done when the bbt is actually
+ * erased to avoid recusrsive updates
+ */
+ if (chip->options & BBT_AUTO_REFRESH && !allowbbt)
+ bbt_masked_page = chip->bbt_td->pages[chipnr] & BBT_PAGE_MASK;
+
/* Loop through the pages */
len = instr->len;
instr->state = MTD_ERASING;
while (len) {
-#ifndef NAND_ALLOW_ERASE_ALL
- /* Check if we have a bad block, we do not erase bad blocks ! */
- if (nand_block_checkbad(mtd, ((loff_t) page) << this->page_shift, 0, allowbbt)) {
- printk (KERN_WARNING "nand_erase: attempt to erase a bad block at page 0x%08x\n", page);
+ /*
+ * heck if we have a bad block, we do not erase bad blocks !
+ */
+ if (nand_block_checkbad(mtd, ((loff_t) page) <<
+ chip->page_shift, 0, allowbbt)) {
+ printk(KERN_WARNING "nand_erase: attempt to erase a "
+ "bad block at page 0x%08x\n", page);
instr->state = MTD_ERASE_FAILED;
goto erase_exit;
}
-#endif
- /* 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);
+ /*
+ * Invalidate the page cache, if we erase the block which
+ * contains the current cached page
+ */
+ if (page <= chip->pagebuf && chip->pagebuf <
+ (page + pages_per_block))
+ chip->pagebuf = -1;
- status = this->waitfunc (mtd, this, FL_ERASING);
+ chip->erase_cmd(mtd, page & chip->pagemask);
+
+ status = chip->waitfunc(mtd, chip);
+
+ /*
+ * See if operation failed and additional status checks are
+ * available
+ */
+ if ((status & NAND_STATUS_FAIL) && (chip->errstat))
+ status = chip->errstat(mtd, chip, FL_ERASING,
+ status, page);
/* See if block erase succeeded */
- if (status & 0x01) {
+ if (status & NAND_STATUS_FAIL) {
MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_erase: "
"Failed erase, page 0x%08x\n", page);
instr->state = MTD_ERASE_FAILED;
- instr->fail_addr = (page << this->page_shift);
+ instr->fail_addr = (page << chip->page_shift);
goto erase_exit;
}
+ /*
+ * If BBT requires refresh, set the BBT rewrite flag to the
+ * page being erased
+ */
+ if (bbt_masked_page != 0xffffffff &&
+ (page & BBT_PAGE_MASK) == bbt_masked_page)
+ rewrite_bbt[chipnr] = (page << chip->page_shift);
+
/* Increment page address and decrement length */
- len -= (1 << this->phys_erase_shift);
+ len -= (1 << chip->phys_erase_shift);
page += pages_per_block;
/* Check, if we cross a chip boundary */
- if (len && !(page & this->pagemask)) {
+ if (len && !(page & chip->pagemask)) {
chipnr++;
- this->select_chip(mtd, -1);
- this->select_chip(mtd, chipnr);
+ chip->select_chip(mtd, -1);
+ chip->select_chip(mtd, chipnr);
+
+ /*
+ * If BBT requires refresh and BBT-PERCHIP, set the BBT
+ * page mask to see if this BBT should be rewritten
+ */
+ if (bbt_masked_page != 0xffffffff &&
+ (chip->bbt_td->options & NAND_BBT_PERCHIP))
+ bbt_masked_page = chip->bbt_td->pages[chipnr] &
+ BBT_PAGE_MASK;
}
}
instr->state = MTD_ERASE_DONE;
-erase_exit:
+ erase_exit:
ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
/* Do call back function */
@@ -2248,6 +2187,23 @@
/* Deselect and wake up anyone waiting on the device */
nand_release_device(mtd);
+ /*
+ * If BBT requires refresh and erase was successful, rewrite any
+ * selected bad block tables
+ */
+ if (bbt_masked_page == 0xffffffff || ret)
+ return ret;
+
+ for (chipnr = 0; chipnr < chip->numchips; chipnr++) {
+ if (!rewrite_bbt[chipnr])
+ continue;
+ /* update the BBT for chip */
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt "
+ "(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
+ chip->bbt_td->pages[chipnr]);
+ nand_update_bbt(mtd, rewrite_bbt[chipnr]);
+ }
+
/* Return more or less happy */
return ret;
}
@@ -2258,41 +2214,40 @@
*
* Sync is actually a wait for chip ready function
*/
-static void nand_sync (struct mtd_info *mtd)
+static void nand_sync(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
MTDDEBUG (MTD_DEBUG_LEVEL3, "nand_sync: called\n");
/* Grab the lock and see if the device is available */
- nand_get_device (this, mtd, FL_SYNCING);
+ nand_get_device(chip, mtd, FL_SYNCING);
/* Release it and go back */
- nand_release_device (mtd);
+ nand_release_device(mtd);
}
-
/**
- * nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
+ * nand_block_isbad - [MTD Interface] Check if block at offset is bad
* @mtd: MTD device structure
- * @ofs: offset relative to mtd start
+ * @offs: offset relative to mtd start
*/
-static int nand_block_isbad (struct mtd_info *mtd, loff_t ofs)
+static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
{
/* Check for invalid offset */
- if (ofs > mtd->size)
+ if (offs > mtd->size)
return -EINVAL;
- return nand_block_checkbad (mtd, ofs, 1, 0);
+ return nand_block_checkbad(mtd, offs, 1, 0);
}
/**
- * nand_block_markbad - [MTD Interface] Mark the block at the given offset as bad
+ * nand_block_markbad - [MTD Interface] Mark block at the given offset as bad
* @mtd: MTD device structure
* @ofs: offset relative to mtd start
*/
-static int nand_block_markbad (struct mtd_info *mtd, loff_t ofs)
+static int nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
int ret;
if ((ret = nand_block_isbad(mtd, ofs))) {
@@ -2302,419 +2257,553 @@
return ret;
}
- return this->block_markbad(mtd, ofs);
+ return chip->block_markbad(mtd, ofs);
}
/**
+ * nand_suspend - [MTD Interface] Suspend the NAND flash
+ * @mtd: MTD device structure
+ */
+static int nand_suspend(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ return nand_get_device(chip, mtd, FL_PM_SUSPENDED);
+}
+
+/**
+ * nand_resume - [MTD Interface] Resume the NAND flash
+ * @mtd: MTD device structure
+ */
+static void nand_resume(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+
+ if (chip->state == FL_PM_SUSPENDED)
+ nand_release_device(mtd);
+ else
+ printk(KERN_ERR "nand_resume() called for a chip which is not "
+ "in suspended state\n");
+}
+
+/*
+ * Set default functions
+ */
+static void nand_set_defaults(struct nand_chip *chip, int busw)
+{
+ /* check for proper chip_delay setup, set 20us if not */
+ if (!chip->chip_delay)
+ chip->chip_delay = 20;
+
+ /* check, if a user supplied command function given */
+ if (chip->cmdfunc == NULL)
+ chip->cmdfunc = nand_command;
+
+ /* check, if a user supplied wait function given */
+ if (chip->waitfunc == NULL)
+ chip->waitfunc = nand_wait;
+
+ if (!chip->select_chip)
+ chip->select_chip = nand_select_chip;
+ if (!chip->read_byte)
+ chip->read_byte = busw ? nand_read_byte16 : nand_read_byte;
+ if (!chip->read_word)
+ chip->read_word = nand_read_word;
+ if (!chip->block_bad)
+ chip->block_bad = nand_block_bad;
+ if (!chip->block_markbad)
+ chip->block_markbad = nand_default_block_markbad;
+ if (!chip->write_buf)
+ chip->write_buf = busw ? nand_write_buf16 : nand_write_buf;
+ if (!chip->read_buf)
+ chip->read_buf = busw ? nand_read_buf16 : nand_read_buf;
+ if (!chip->verify_buf)
+ chip->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf;
+ if (!chip->scan_bbt)
+ chip->scan_bbt = nand_default_bbt;
+
+ if (!chip->controller) {
+ chip->controller = &chip->hwcontrol;
+
+ /* XXX U-BOOT XXX */
+#if 0
+ spin_lock_init(&chip->controller->lock);
+ init_waitqueue_head(&chip->controller->wq);
+#endif
+ }
+
+}
+
+/*
+ * Get the flash and manufacturer id and lookup if the type is supported
+ */
+static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
+ struct nand_chip *chip,
+ int busw, int *maf_id)
+{
+ struct nand_flash_dev *type = NULL;
+ int i, dev_id, maf_idx;
+
+ /* Select the device */
+ chip->select_chip(mtd, 0);
+
+ /* Send the command for reading device ID */
+ chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
+
+ /* Read manufacturer and device IDs */
+ *maf_id = chip->read_byte(mtd);
+ dev_id = chip->read_byte(mtd);
+
+ /* Lookup the flash id */
+ for (i = 0; nand_flash_ids[i].name != NULL; i++) {
+ if (dev_id == nand_flash_ids[i].id) {
+ type = &nand_flash_ids[i];
+ break;
+ }
+ }
+
+ if (!type)
+ return ERR_PTR(-ENODEV);
+
+ if (!mtd->name)
+ mtd->name = type->name;
+
+ chip->chipsize = type->chipsize << 20;
+
+ /* Newer devices have all the information in additional id bytes */
+ if (!type->pagesize) {
+ int extid;
+ /* The 3rd id byte holds MLC / multichip data */
+ chip->cellinfo = chip->read_byte(mtd);
+ /* The 4th id byte is the important one */
+ extid = chip->read_byte(mtd);
+ /* Calc pagesize */
+ mtd->writesize = 1024 << (extid & 0x3);
+ extid >>= 2;
+ /* Calc oobsize */
+ mtd->oobsize = (8 << (extid & 0x01)) * (mtd->writesize >> 9);
+ extid >>= 2;
+ /* Calc blocksize. Blocksize is multiples of 64KiB */
+ mtd->erasesize = (64 * 1024) << (extid & 0x03);
+ extid >>= 2;
+ /* Get buswidth information */
+ busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
+
+ } else {
+ /*
+ * Old devices have chip data hardcoded in the device id table
+ */
+ mtd->erasesize = type->erasesize;
+ mtd->writesize = type->pagesize;
+ mtd->oobsize = mtd->writesize / 32;
+ busw = type->options & NAND_BUSWIDTH_16;
+ }
+
+ /* Try to identify manufacturer */
+ for (maf_idx = 0; nand_manuf_ids[maf_idx].id != 0x0; maf_idx++) {
+ if (nand_manuf_ids[maf_idx].id == *maf_id)
+ break;
+ }
+
+ /*
+ * Check, if buswidth is correct. Hardware drivers should set
+ * chip correct !
+ */
+ if (busw != (chip->options & NAND_BUSWIDTH_16)) {
+ printk(KERN_INFO "NAND device: Manufacturer ID:"
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id,
+ dev_id, nand_manuf_ids[maf_idx].name, mtd->name);
+ printk(KERN_WARNING "NAND bus width %d instead %d bit\n",
+ (chip->options & NAND_BUSWIDTH_16) ? 16 : 8,
+ busw ? 16 : 8);
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* Calculate the address shift from the page size */
+ chip->page_shift = ffs(mtd->writesize) - 1;
+ /* Convert chipsize to number of pages per chip -1. */
+ chip->pagemask = (chip->chipsize >> chip->page_shift) - 1;
+
+ chip->bbt_erase_shift = chip->phys_erase_shift =
+ ffs(mtd->erasesize) - 1;
+ chip->chip_shift = ffs(chip->chipsize) - 1;
+
+ /* Set the bad block position */
+ chip->badblockpos = mtd->writesize > 512 ?
+ NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
+
+ /* Get chip options, preserve non chip based options */
+ chip->options &= ~NAND_CHIPOPTIONS_MSK;
+ chip->options |= type->options & NAND_CHIPOPTIONS_MSK;
+
+ /*
+ * Set chip as a default. Board drivers can override it, if necessary
+ */
+ chip->options |= NAND_NO_AUTOINCR;
+
+ /* Check if chip is a not a samsung device. Do not clear the
+ * options for chips which are not having an extended id.
+ */
+ if (*maf_id != NAND_MFR_SAMSUNG && !type->pagesize)
+ chip->options &= ~NAND_SAMSUNG_LP_OPTIONS;
+
+ /* Check for AND chips with 4 page planes */
+ if (chip->options & NAND_4PAGE_ARRAY)
+ chip->erase_cmd = multi_erase_cmd;
+ else
+ chip->erase_cmd = single_erase_cmd;
+
+ /* Do not replace user supplied command function ! */
+ if (mtd->writesize > 512 && chip->cmdfunc == nand_command)
+ chip->cmdfunc = nand_command_lp;
+
+ printk(KERN_INFO "NAND device: Manufacturer ID:"
+ " 0x%02x, Chip ID: 0x%02x (%s %s)\n", *maf_id, dev_id,
+ nand_manuf_ids[maf_idx].name, type->name);
+
+ return type;
+}
+
+/**
+ * nand_scan_ident - [NAND Interface] Scan for the NAND device
+ * @mtd: MTD device structure
+ * @maxchips: Number of chips to scan for
+ *
+ * This is the first phase of the normal nand_scan() function. It
+ * reads the flash ID and sets up MTD fields accordingly.
+ *
+ * The mtd->owner field must be set to the module of the caller.
+ */
+int nand_scan_ident(struct mtd_info *mtd, int maxchips)
+{
+ int i, busw, nand_maf_id;
+ struct nand_chip *chip = mtd->priv;
+ struct nand_flash_dev *type;
+
+ /* Get buswidth to select the correct functions */
+ busw = chip->options & NAND_BUSWIDTH_16;
+ /* Set the default functions */
+ nand_set_defaults(chip, busw);
+
+ /* Read the flash type */
+ type = nand_get_flash_type(mtd, chip, busw, &nand_maf_id);
+
+ if (IS_ERR(type)) {
+ printk(KERN_WARNING "No NAND device found!!!\n");
+ chip->select_chip(mtd, -1);
+ return PTR_ERR(type);
+ }
+
+ /* Check for a chip array */
+ for (i = 1; i < maxchips; i++) {
+ chip->select_chip(mtd, i);
+ /* Send the command for reading device ID */
+ chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
+ /* Read manufacturer and device IDs */
+ if (nand_maf_id != chip->read_byte(mtd) ||
+ type->id != chip->read_byte(mtd))
+ break;
+ }
+ if (i > 1)
+ printk(KERN_INFO "%d NAND chips detected\n", i);
+
+ /* Store the number of chips and calc total size for mtd */
+ chip->numchips = i;
+ mtd->size = i * chip->chipsize;
+
+ return 0;
+}
+
+
+/**
+ * nand_scan_tail - [NAND Interface] Scan for the NAND device
+ * @mtd: MTD device structure
+ * @maxchips: Number of chips to scan for
+ *
+ * This is the second phase of the normal nand_scan() function. It
+ * fills out all the uninitialized function pointers with the defaults
+ * and scans for a bad block table if appropriate.
+ */
+int nand_scan_tail(struct mtd_info *mtd)
+{
+ int i;
+ struct nand_chip *chip = mtd->priv;
+
+ if (!(chip->options & NAND_OWN_BUFFERS))
+ chip->buffers = kmalloc(sizeof(*chip->buffers), GFP_KERNEL);
+ if (!chip->buffers)
+ return -ENOMEM;
+
+ /* Set the internal oob buffer location, just after the page data */
+ chip->oob_poi = chip->buffers->databuf + mtd->writesize;
+
+ /*
+ * If no default placement scheme is given, select an appropriate one
+ */
+ if (!chip->ecc.layout) {
+ switch (mtd->oobsize) {
+ case 8:
+ chip->ecc.layout = &nand_oob_8;
+ break;
+ case 16:
+ chip->ecc.layout = &nand_oob_16;
+ break;
+ case 64:
+ chip->ecc.layout = &nand_oob_64;
+ break;
+ case 128:
+ chip->ecc.layout = &nand_oob_128;
+ break;
+ default:
+ printk(KERN_WARNING "No oob scheme defined for "
+ "oobsize %d\n", mtd->oobsize);
+// BUG();
+ }
+ }
+
+ if (!chip->write_page)
+ chip->write_page = nand_write_page;
+
+ /*
+ * check ECC mode, default to software if 3byte/512byte hardware ECC is
+ * selected and we have 256 byte pagesize fallback to software ECC
+ */
+ if (!chip->ecc.read_page_raw)
+ chip->ecc.read_page_raw = nand_read_page_raw;
+ if (!chip->ecc.write_page_raw)
+ chip->ecc.write_page_raw = nand_write_page_raw;
+
+ switch (chip->ecc.mode) {
+ case NAND_ECC_HW:
+ /* Use standard hwecc read page function ? */
+ if (!chip->ecc.read_page)
+ chip->ecc.read_page = nand_read_page_hwecc;
+ if (!chip->ecc.write_page)
+ chip->ecc.write_page = nand_write_page_hwecc;
+ if (!chip->ecc.read_oob)
+ chip->ecc.read_oob = nand_read_oob_std;
+ if (!chip->ecc.write_oob)
+ chip->ecc.write_oob = nand_write_oob_std;
+
+ case NAND_ECC_HW_SYNDROME:
+ if (!chip->ecc.calculate || !chip->ecc.correct ||
+ !chip->ecc.hwctl) {
+ printk(KERN_WARNING "No ECC functions supplied, "
+ "Hardware ECC not possible\n");
+ BUG();
+ }
+ /* Use standard syndrome read/write page function ? */
+ if (!chip->ecc.read_page)
+ chip->ecc.read_page = nand_read_page_syndrome;
+ if (!chip->ecc.write_page)
+ chip->ecc.write_page = nand_write_page_syndrome;
+ if (!chip->ecc.read_oob)
+ chip->ecc.read_oob = nand_read_oob_syndrome;
+ if (!chip->ecc.write_oob)
+ chip->ecc.write_oob = nand_write_oob_syndrome;
+
+ if (mtd->writesize >= chip->ecc.size)
+ break;
+ printk(KERN_WARNING "%d byte HW ECC not possible on "
+ "%d byte page size, fallback to SW ECC\n",
+ chip->ecc.size, mtd->writesize);
+ chip->ecc.mode = NAND_ECC_SOFT;
+
+ case NAND_ECC_SOFT:
+ chip->ecc.calculate = nand_calculate_ecc;
+ chip->ecc.correct = nand_correct_data;
+ chip->ecc.read_page = nand_read_page_swecc;
+ chip->ecc.write_page = nand_write_page_swecc;
+ chip->ecc.read_oob = nand_read_oob_std;
+ chip->ecc.write_oob = nand_write_oob_std;
+ chip->ecc.size = 256;
+ chip->ecc.bytes = 3;
+ break;
+
+ case NAND_ECC_NONE:
+ printk(KERN_WARNING "NAND_ECC_NONE selected by board driver. "
+ "This is not recommended !!\n");
+ chip->ecc.read_page = nand_read_page_raw;
+ chip->ecc.write_page = nand_write_page_raw;
+ chip->ecc.read_oob = nand_read_oob_std;
+ chip->ecc.write_oob = nand_write_oob_std;
+ chip->ecc.size = mtd->writesize;
+ chip->ecc.bytes = 0;
+ break;
+
+ default:
+ printk(KERN_WARNING "Invalid NAND_ECC_MODE %d\n",
+ chip->ecc.mode);
+ BUG();
+ }
+
+ /*
+ * The number of bytes available for a client to place data into
+ * the out of band area
+ */
+ chip->ecc.layout->oobavail = 0;
+ for (i = 0; chip->ecc.layout->oobfree[i].length; i++)
+ chip->ecc.layout->oobavail +=
+ chip->ecc.layout->oobfree[i].length;
+ mtd->oobavail = chip->ecc.layout->oobavail;
+
+ /*
+ * Set the number of read / write steps for one page depending on ECC
+ * mode
+ */
+ chip->ecc.steps = mtd->writesize / chip->ecc.size;
+ if(chip->ecc.steps * chip->ecc.size != mtd->writesize) {
+ printk(KERN_WARNING "Invalid ecc parameters\n");
+ BUG();
+ }
+ chip->ecc.total = chip->ecc.steps * chip->ecc.bytes;
+
+ /*
+ * Allow subpage writes up to ecc.steps. Not possible for MLC
+ * FLASH.
+ */
+ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) &&
+ !(chip->cellinfo & NAND_CI_CELLTYPE_MSK)) {
+ switch(chip->ecc.steps) {
+ case 2:
+ mtd->subpage_sft = 1;
+ break;
+ case 4:
+ case 8:
+ mtd->subpage_sft = 2;
+ break;
+ }
+ }
+ chip->subpagesize = mtd->writesize >> mtd->subpage_sft;
+
+ /* Initialize state */
+ chip->state = FL_READY;
+
+ /* De-select the device */
+ chip->select_chip(mtd, -1);
+
+ /* Invalidate the pagebuffer reference */
+ chip->pagebuf = -1;
+
+ /* Fill in remaining MTD driver data */
+ mtd->type = MTD_NANDFLASH;
+ mtd->flags = MTD_CAP_NANDFLASH;
+ mtd->erase = nand_erase;
+ mtd->point = NULL;
+ mtd->unpoint = NULL;
+ mtd->read = nand_read;
+ mtd->write = nand_write;
+ mtd->read_oob = nand_read_oob;
+ mtd->write_oob = nand_write_oob;
+ mtd->sync = nand_sync;
+ mtd->lock = NULL;
+ mtd->unlock = NULL;
+ mtd->suspend = nand_suspend;
+ mtd->resume = nand_resume;
+ mtd->block_isbad = nand_block_isbad;
+ mtd->block_markbad = nand_block_markbad;
+
+ /* propagate ecc.layout to mtd_info */
+ mtd->ecclayout = chip->ecc.layout;
+
+ /* Check, if we should skip the bad block table scan */
+ if (chip->options & NAND_SKIP_BBTSCAN)
+ return 0;
+
+ /* Build bad block table */
+ return chip->scan_bbt(mtd);
+}
+
+/* module_text_address() isn't exported, and it's mostly a pointless
+ test if this is a module _anyway_ -- they'd have to try _really_ hard
+ to call us from in-kernel code if the core NAND support is modular. */
+#ifdef MODULE
+#define caller_is_module() (1)
+#else
+#define caller_is_module() \
+ module_text_address((unsigned long)__builtin_return_address(0))
+#endif
+
+/**
* nand_scan - [NAND Interface] Scan for the NAND device
* @mtd: MTD device structure
* @maxchips: Number of chips to scan for
*
- * This fills out all the not initialized function pointers
+ * This fills out all the uninitialized function pointers
* with the defaults.
* The flash ID is read and the mtd/chip structures are
- * filled with the appropriate values. Buffers are allocated if
- * they are not provided by the board driver
+ * filled with the appropriate values.
+ * The mtd->owner field must be set to the module of the caller
*
*/
-int nand_scan (struct mtd_info *mtd, int maxchips)
+int nand_scan(struct mtd_info *mtd, int maxchips)
{
- int i, j, nand_maf_id, nand_dev_id, busw;
- struct nand_chip *this = mtd->priv;
+ int ret;
- /* Get buswidth to select the correct functions*/
- busw = this->options & NAND_BUSWIDTH_16;
-
- /* check for proper chip_delay setup, set 20us if not */
- if (!this->chip_delay)
- this->chip_delay = 20;
-
- /* check, if a user supplied command function given */
- if (this->cmdfunc == NULL)
- this->cmdfunc = nand_command;
-
- /* check, if a user supplied wait function given */
- if (this->waitfunc == NULL)
- this->waitfunc = nand_wait;
-
- if (!this->select_chip)
- this->select_chip = nand_select_chip;
- if (!this->write_byte)
- this->write_byte = busw ? nand_write_byte16 : nand_write_byte;
- if (!this->read_byte)
- this->read_byte = busw ? nand_read_byte16 : nand_read_byte;
- if (!this->write_word)
- this->write_word = nand_write_word;
- if (!this->read_word)
- this->read_word = nand_read_word;
- if (!this->block_bad)
- this->block_bad = nand_block_bad;
- if (!this->block_markbad)
- this->block_markbad = nand_default_block_markbad;
- if (!this->write_buf)
- this->write_buf = busw ? nand_write_buf16 : nand_write_buf;
- if (!this->read_buf)
- this->read_buf = busw ? nand_read_buf16 : nand_read_buf;
- if (!this->verify_buf)
- this->verify_buf = busw ? nand_verify_buf16 : nand_verify_buf;
- if (!this->scan_bbt)
- this->scan_bbt = nand_default_bbt;
-
- /* Select the device */
- this->select_chip(mtd, 0);
-
- /* Send the command for reading device ID */
- this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1);
-
- /* Read manufacturer and device IDs */
- nand_maf_id = this->read_byte(mtd);
- nand_dev_id = this->read_byte(mtd);
-
- /* 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)
- 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;
- /* The 3rd id byte contains non relevant data ATM */
- extid = this->read_byte(mtd);
- /* The 4th id byte is the important one */
- extid = this->read_byte(mtd);
- /* Calc pagesize */
- mtd->oobblock = 1024 << (extid & 0x3);
- extid >>= 2;
- /* Calc oobsize */
- mtd->oobsize = (8 << (extid & 0x01)) * (mtd->oobblock / 512);
- extid >>= 2;
- /* Calc blocksize. Blocksize is multiples of 64KiB */
- mtd->erasesize = (64 * 1024) << (extid & 0x03);
- extid >>= 2;
- /* Get buswidth information */
- busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
-
- } else {
- /* Old devices have this data hardcoded in the
- * device id table */
- mtd->erasesize = nand_flash_ids[i].erasesize;
- mtd->oobblock = nand_flash_ids[i].pagesize;
- mtd->oobsize = mtd->oobblock / 32;
- busw = nand_flash_ids[i].options & NAND_BUSWIDTH_16;
- }
-
- /* Check, if buswidth is correct. Hardware drivers should set
- * 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,
- nand_manuf_ids[i].name , mtd->name);
- 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;
- }
-
- /* 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 ?
- NAND_LARGE_BADBLOCK_POS : NAND_SMALL_BADBLOCK_POS;
-
- /* Get chip options, preserve non chip based options */
- this->options &= ~NAND_CHIPOPTIONS_MSK;
- this->options |= nand_flash_ids[i].options & NAND_CHIPOPTIONS_MSK;
- /* Set this as a default. Board drivers can override it, if neccecary */
- 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;
- else
- this->erase_cmd = single_erase_cmd;
-
- /* Do not replace user supplied command function ! */
- if (mtd->oobblock > 512 && this->cmdfunc == nand_command)
- this->cmdfunc = nand_command_lp;
-
- /* Try to identify manufacturer */
- for (j = 0; nand_manuf_ids[j].id != 0x0; j++) {
- if (nand_manuf_ids[j].id == nand_maf_id)
- break;
- }
- break;
- }
-
- if (!nand_flash_ids[i].name) {
-#ifndef CFG_NAND_QUIET_TEST
- printk (KERN_WARNING "No NAND device found!!!\n");
-#endif
- this->select_chip(mtd, -1);
- return 1;
- }
-
- for (i=1; i < maxchips; i++) {
- this->select_chip(mtd, i);
-
- /* Send the command for reading device ID */
- this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1);
-
- /* Read manufacturer and device IDs */
- if (nand_maf_id != this->read_byte(mtd) ||
- nand_dev_id != this->read_byte(mtd))
- break;
- }
- if (i > 1)
- printk(KERN_INFO "%d NAND chips detected\n", i);
-
- /* Allocate buffers, if neccecary */
- if (!this->oob_buf) {
- size_t len;
- len = mtd->oobsize << (this->phys_erase_shift - this->page_shift);
- this->oob_buf = kmalloc (len, GFP_KERNEL);
- if (!this->oob_buf) {
- printk (KERN_ERR "nand_scan(): Cannot allocate oob_buf\n");
- return -ENOMEM;
- }
- this->options |= NAND_OOBBUF_ALLOC;
- }
-
- if (!this->data_buf) {
- size_t len;
- len = mtd->oobblock + mtd->oobsize;
- this->data_buf = kmalloc (len, GFP_KERNEL);
- if (!this->data_buf) {
- if (this->options & NAND_OOBBUF_ALLOC)
- kfree (this->oob_buf);
- printk (KERN_ERR "nand_scan(): Cannot allocate data_buf\n");
- return -ENOMEM;
- }
- this->options |= NAND_DATABUF_ALLOC;
- }
-
- /* Store the number of chips and calc total size for mtd */
- this->numchips = i;
- mtd->size = i * this->chipsize;
- /* Convert chipsize to number of pages per chip -1. */
- this->pagemask = (this->chipsize >> this->page_shift) - 1;
- /* Preset the internal oob buffer */
- memset(this->oob_buf, 0xff, mtd->oobsize << (this->phys_erase_shift - this->page_shift));
-
- /* If no default placement scheme is given, select an
- * appropriate one */
- if (!this->autooob) {
- /* Select the appropriate default oob placement scheme for
- * placement agnostic filesystems */
- switch (mtd->oobsize) {
- case 8:
- this->autooob = &nand_oob_8;
- break;
- case 16:
- this->autooob = &nand_oob_16;
- break;
- case 64:
- this->autooob = &nand_oob_64;
- break;
- case 128:
- this->autooob = &nand_oob_128;
- break;
- default:
- printk (KERN_WARNING "No oob scheme defined for oobsize %d\n",
- mtd->oobsize);
-/* 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
- */
- this->eccsize = 256; /* set default eccsize */
- this->eccbytes = 3;
-
- switch (this->eccmode) {
- case NAND_ECC_HW12_2048:
- if (mtd->oobblock < 2048) {
- printk(KERN_WARNING "2048 byte HW ECC not possible on %d byte page size, fallback to SW ECC\n",
- mtd->oobblock);
- this->eccmode = NAND_ECC_SOFT;
- this->calculate_ecc = nand_calculate_ecc;
- this->correct_data = nand_correct_data;
- } else
- this->eccsize = 2048;
- break;
-
- 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
- this->eccsize = 512; /* set eccsize to 512 */
- break;
-
- case NAND_ECC_HW3_256:
- break;
-
- 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:
- 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(); */
- }
-
- /* 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:
- this->eccbytes += 2;
- case NAND_ECC_HW6_512:
- this->eccbytes += 3;
- case NAND_ECC_HW3_512:
- case NAND_ECC_HW3_256:
- if (this->calculate_ecc && this->correct_data && this->enable_hwecc)
- break;
- printk (KERN_WARNING "No ECC functions supplied, Hardware ECC not possible\n");
-/* BUG(); */
- }
-
- mtd->eccsize = this->eccsize;
-
- /* Set the number of read / write steps for one page to ensure ECC generation */
- switch (this->eccmode) {
- case NAND_ECC_HW12_2048:
- this->eccsteps = mtd->oobblock / 2048;
- break;
- case NAND_ECC_HW3_512:
- case NAND_ECC_HW6_512:
- case NAND_ECC_HW8_512:
- this->eccsteps = mtd->oobblock / 512;
- break;
- case NAND_ECC_HW3_256:
- case NAND_ECC_SOFT:
- this->eccsteps = mtd->oobblock / 256;
- break;
-
- case NAND_ECC_NONE:
- this->eccsteps = 1;
- break;
- }
-
-/* XXX U-BOOT XXX */
+ /* Many callers got this wrong, so check for it for a while... */
+ /* XXX U-BOOT XXX */
#if 0
- /* Initialize state, waitqueue and spinlock */
- this->state = FL_READY;
- init_waitqueue_head (&this->wq);
- spin_lock_init (&this->chip_lock);
+ if (!mtd->owner && caller_is_module()) {
+ printk(KERN_CRIT "nand_scan() called with NULL mtd->owner!\n");
+ BUG();
+ }
#endif
-
- /* De-select the device */
- this->select_chip(mtd, -1);
-
- /* Invalidate the pagebuffer reference */
- this->pagebuf = -1;
-
- /* Fill in remaining MTD driver data */
- mtd->type = MTD_NANDFLASH;
- mtd->flags = MTD_CAP_NANDFLASH | MTD_ECC;
- mtd->ecctype = MTD_ECC_SW;
- mtd->erase = nand_erase;
- mtd->point = NULL;
- mtd->unpoint = NULL;
- mtd->read = nand_read;
- mtd->write = nand_write;
- mtd->read_ecc = nand_read_ecc;
- mtd->write_ecc = nand_write_ecc;
- mtd->read_oob = nand_read_oob;
- mtd->write_oob = nand_write_oob;
-/* XXX U-BOOT XXX */
-#if 0
- mtd->readv = NULL;
- mtd->writev = nand_writev;
- mtd->writev_ecc = nand_writev_ecc;
-#endif
- mtd->sync = nand_sync;
-/* XXX U-BOOT XXX */
-#if 0
- mtd->lock = NULL;
- mtd->unlock = NULL;
- mtd->suspend = NULL;
- mtd->resume = NULL;
-#endif
- mtd->block_isbad = nand_block_isbad;
- mtd->block_markbad = nand_block_markbad;
-
- /* and make the autooob the default one */
- memcpy(&mtd->oobinfo, this->autooob, sizeof(mtd->oobinfo));
-/* XXX U-BOOT XXX */
-#if 0
- mtd->owner = THIS_MODULE;
-#endif
- /* Build bad block table */
- return this->scan_bbt (mtd);
+
+ ret = nand_scan_ident(mtd, maxchips);
+ if (!ret)
+ ret = nand_scan_tail(mtd);
+ return ret;
}
/**
* nand_release - [NAND Interface] Free resources held by the NAND device
* @mtd: MTD device structure
- */
-void nand_release (struct mtd_info *mtd)
+*/
+void nand_release(struct mtd_info *mtd)
{
- struct nand_chip *this = mtd->priv;
+ struct nand_chip *chip = mtd->priv;
#ifdef CONFIG_MTD_PARTITIONS
/* Deregister partitions */
- del_mtd_partitions (mtd);
+ del_mtd_partitions(mtd);
#endif
/* Deregister the device */
-/* XXX U-BOOT XXX */
+ /* XXX U-BOOT XXX */
#if 0
- del_mtd_device (mtd);
+ del_mtd_device(mtd);
#endif
- /* Free bad block table memory, if allocated */
- if (this->bbt)
- kfree (this->bbt);
- /* Buffer allocated by nand_scan ? */
- if (this->options & NAND_OOBBUF_ALLOC)
- kfree (this->oob_buf);
- /* Buffer allocated by nand_scan ? */
- if (this->options & NAND_DATABUF_ALLOC)
- kfree (this->data_buf);
+
+ /* Free bad block table memory */
+ kfree(chip->bbt);
+ if (!(chip->options & NAND_OWN_BUFFERS))
+ kfree(chip->buffers);
}
+/* XXX U-BOOT XXX */
+#if 0
+EXPORT_SYMBOL_GPL(nand_scan);
+EXPORT_SYMBOL_GPL(nand_scan_ident);
+EXPORT_SYMBOL_GPL(nand_scan_tail);
+EXPORT_SYMBOL_GPL(nand_release);
+
+static int __init nand_base_init(void)
+{
+ led_trigger_register_simple("nand-disk", &nand_led_trigger);
+ return 0;
+}
+
+static void __exit nand_base_exit(void)
+{
+ led_trigger_unregister_simple(nand_led_trigger);
+}
+
+module_init(nand_base_init);
+module_exit(nand_base_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>");
+MODULE_DESCRIPTION("Generic NAND flash driver code");
#endif
+
+#endif
+
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index a97743b..acf1cf5 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -6,7 +6,7 @@
*
* Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de)
*
- * $Id: nand_bbt.c,v 1.28 2004/11/13 10:19:09 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
@@ -48,7 +48,7 @@
*
* 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
+ * - the space necessary for a bbt in FLASH does not exceed a block boundary
*
*/
@@ -63,6 +63,19 @@
#include <asm/errno.h>
+/* XXX U-BOOT XXX */
+#if 0
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/compatmac.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#endif
+
/**
* check_pattern - [GENERIC] check if a pattern is in the buffer
* @buf: the buffer to search
@@ -76,9 +89,9 @@
* pattern area contain 0xff
*
*/
-static int check_pattern (uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td)
+static int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td)
{
- int i, end;
+ int i, end = 0;
uint8_t *p = buf;
end = paglen + td->offs;
@@ -96,9 +109,9 @@
return -1;
}
- p += td->len;
- end += td->len;
if (td->options & NAND_BBT_SCANEMPTY) {
+ p += td->len;
+ end += td->len;
for (i = end; i < len; i++) {
if (*p++ != 0xff)
return -1;
@@ -108,6 +121,29 @@
}
/**
+ * 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
+ * no optional empty check
+ *
+*/
+static int check_short_pattern(uint8_t *buf, struct nand_bbt_descr *td)
+{
+ int i;
+ uint8_t *p = buf;
+
+ /* Compare the pattern */
+ for (i = 0; i < td->len; i++) {
+ if (p[td->offs + i] != td->pattern[i])
+ return -1;
+ }
+ return 0;
+}
+
+/**
* read_bbt - [GENERIC] Read the bad block table starting from page
* @mtd: MTD device structure
* @buf: temporary buffer
@@ -120,8 +156,8 @@
* Read the bad block table starting from page.
*
*/
-static int read_bbt (struct mtd_info *mtd, uint8_t *buf, int page, int num,
- int bits, int offs, int reserved_block_code)
+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;
struct nand_chip *this = mtd->priv;
@@ -130,17 +166,17 @@
uint8_t msk = (uint8_t) ((1 << bits) - 1);
totlen = (num * bits) >> 3;
- from = ((loff_t)page) << this->page_shift;
+ 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);
+ len = min(totlen, (size_t) (1 << this->bbt_erase_shift));
+ res = mtd->read(mtd, from, len, &retlen, buf);
if (res < 0) {
if (retlen != len) {
- printk (KERN_INFO "nand_bbt: Error reading bad block table\n");
+ printk(KERN_INFO "nand_bbt: Error reading bad block table\n");
return res;
}
- printk (KERN_WARNING "nand_bbt: ECC error while reading bad block table\n");
+ printk(KERN_WARNING "nand_bbt: ECC error while reading bad block table\n");
}
/* Analyse data */
@@ -150,22 +186,23 @@
uint8_t tmp = (dat >> j) & msk;
if (tmp == msk)
continue;
- if (reserved_block_code &&
- (tmp == reserved_block_code)) {
- printk (KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
- ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+ if (reserved_block_code && (tmp == reserved_block_code)) {
+ printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
+ ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06);
+ mtd->ecc_stats.bbtblocks++;
continue;
}
/* Leave it for now, if its matured we can move this
* 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);
+ 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 ? */
if (tmp == 0)
this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06);
else
this->bbt[offs + (act >> 3)] |= 0x1 << (act & 0x06);
+ mtd->ecc_stats.badblocks++;
}
}
totlen -= len;
@@ -185,7 +222,7 @@
* Read the bad block table for all chips starting at a given page
* We assume that the bbt bits are in consecutive order.
*/
-static int read_abs_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
+static int read_abs_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td, int chip)
{
struct nand_chip *this = mtd->priv;
int res = 0, i;
@@ -209,6 +246,42 @@
return 0;
}
+/*
+ * Scan read raw data from flash
+ */
+static int scan_read_raw(struct mtd_info *mtd, uint8_t *buf, loff_t offs,
+ size_t len)
+{
+ struct mtd_oob_ops ops;
+
+ ops.mode = MTD_OOB_RAW;
+ ops.ooboffs = 0;
+ ops.ooblen = mtd->oobsize;
+ ops.oobbuf = buf;
+ ops.datbuf = buf;
+ ops.len = len;
+
+ return mtd->read_oob(mtd, offs, &ops);
+}
+
+/*
+ * Scan write data with oob to flash
+ */
+static int scan_write_bbt(struct mtd_info *mtd, loff_t offs, size_t len,
+ uint8_t *buf, uint8_t *oob)
+{
+ struct mtd_oob_ops ops;
+
+ ops.mode = MTD_OOB_PLACE;
+ ops.ooboffs = 0;
+ ops.ooblen = mtd->oobsize;
+ ops.datbuf = buf;
+ ops.oobbuf = oob;
+ ops.len = len;
+
+ return mtd->write_oob(mtd, offs, &ops);
+}
+
/**
* read_abs_bbts - [GENERIC] Read the bad block table(s) for all chips starting at a given page
* @mtd: MTD device structure
@@ -220,28 +293,84 @@
* We assume that the bbt bits are in consecutive order.
*
*/
-static int read_abs_bbts (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td,
- struct nand_bbt_descr *md)
+static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
+ struct nand_bbt_descr *td, struct nand_bbt_descr *md)
{
struct nand_chip *this = mtd->priv;
/* 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);
- 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]);
+ scan_read_raw(mtd, buf, td->pages[0] << this->page_shift,
+ mtd->writesize);
+ td->version[0] = buf[mtd->writesize + 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 */
if (md && (md->options & NAND_BBT_VERSION)) {
- 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]);
+ scan_read_raw(mtd, buf, md->pages[0] << this->page_shift,
+ mtd->writesize);
+ md->version[0] = buf[mtd->writesize + md->veroffs];
+ printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
+ md->pages[0], md->version[0]);
}
-
return 1;
}
+/*
+ * Scan a given block full
+ */
+static int scan_block_full(struct mtd_info *mtd, struct nand_bbt_descr *bd,
+ loff_t offs, uint8_t *buf, size_t readlen,
+ int scanlen, int len)
+{
+ int ret, j;
+
+ ret = scan_read_raw(mtd, buf, offs, readlen);
+ if (ret)
+ return ret;
+
+ for (j = 0; j < len; j++, buf += scanlen) {
+ if (check_pattern(buf, scanlen, mtd->writesize, bd))
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Scan a given block partially
+ */
+static int scan_block_fast(struct mtd_info *mtd, struct nand_bbt_descr *bd,
+ loff_t offs, uint8_t *buf, int len)
+{
+ struct mtd_oob_ops ops;
+ int j, ret;
+
+ ops.ooblen = mtd->oobsize;
+ ops.oobbuf = buf;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
+
+ for (j = 0; j < len; j++) {
+ /*
+ * Read the full oob until read_oob is fixed to
+ * handle single byte reads for 16 bit
+ * buswidth
+ */
+ ret = mtd->read_oob(mtd, offs, &ops);
+ if (ret)
+ return ret;
+
+ if (check_short_pattern(buf, bd))
+ return 1;
+
+ offs += mtd->writesize;
+ }
+ return 0;
+}
+
/**
* create_bbt - [GENERIC] Create a bad block table by scanning the device
* @mtd: MTD device structure
@@ -253,13 +382,16 @@
* Create a bad block table by scanning the device
* for the given good/bad block identify pattern
*/
-static void create_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd, int chip)
+static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
+ struct nand_bbt_descr *bd, int chip)
{
struct nand_chip *this = mtd->priv;
- int i, j, numblocks, len, scanlen;
+ int i, numblocks, len, scanlen;
int startblock;
loff_t from;
- size_t readlen, ooblen;
+ size_t readlen;
+
+ printk(KERN_INFO "Scanning device for bad blocks\n");
if (bd->options & NAND_BBT_SCANALLPAGES)
len = 1 << (this->bbt_erase_shift - this->page_shift);
@@ -269,21 +401,28 @@
else
len = 1;
}
- scanlen = mtd->oobblock + mtd->oobsize;
- readlen = len * mtd->oobblock;
- ooblen = len * mtd->oobsize;
+
+ if (!(bd->options & NAND_BBT_SCANEMPTY)) {
+ /* We need only read few bytes from the OOB area */
+ scanlen = 0;
+ readlen = bd->len;
+ } else {
+ /* Full page content should be read */
+ scanlen = mtd->writesize + mtd->oobsize;
+ readlen = len * mtd->writesize;
+ }
if (chip == -1) {
- /* Note that numblocks is 2 * (real numblocks) here, see i+=2 below as it
- * makes shifting and masking less painful */
+ /* Note that numblocks is 2 * (real numblocks) here, see i+=2
+ * below as it makes shifting and masking less painful */
numblocks = mtd->size >> (this->bbt_erase_shift - 1);
startblock = 0;
from = 0;
} else {
if (chip >= this->numchips) {
- printk (KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n",
- chip + 1, this->numchips);
- return;
+ printk(KERN_WARNING "create_bbt(): chipnr (%d) > available chips (%d)\n",
+ chip + 1, this->numchips);
+ return -EINVAL;
}
numblocks = this->chipsize >> (this->bbt_erase_shift - 1);
startblock = chip * numblocks;
@@ -292,16 +431,28 @@
}
for (i = startblock; i < numblocks;) {
- nand_read_raw (mtd, buf, from, readlen, ooblen);
- for (j = 0; j < len; j++) {
- if (check_pattern (&buf[j * scanlen], scanlen, mtd->oobblock, bd)) {
- this->bbt[i >> 3] |= 0x03 << (i & 0x6);
- break;
- }
+ int ret;
+
+ if (bd->options & NAND_BBT_SCANALLPAGES)
+ ret = scan_block_full(mtd, bd, from, buf, readlen,
+ scanlen, len);
+ else
+ ret = scan_block_fast(mtd, bd, from, buf, len);
+
+ if (ret < 0)
+ return ret;
+
+ if (ret) {
+ this->bbt[i >> 3] |= 0x03 << (i & 0x6);
+ printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
+ i >> 1, (unsigned int)from);
+ mtd->ecc_stats.badblocks++;
}
+
i += 2;
from += (1 << this->bbt_erase_shift);
}
+ return 0;
}
/**
@@ -316,22 +467,23 @@
* block.
* 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.
+ * This is necessary to provide support for certain DOC devices.
*
* The bbt ident pattern resides in the oob area of the first page
* in a block.
*/
-static int search_bbt (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
+static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *td)
{
struct nand_chip *this = mtd->priv;
int i, chips;
int bits, startblock, block, dir;
- int scanlen = mtd->oobblock + mtd->oobsize;
+ int scanlen = mtd->writesize + mtd->oobsize;
int bbtblocks;
+ int blocktopage = this->bbt_erase_shift - this->page_shift;
/* Search direction top -> down ? */
if (td->options & NAND_BBT_LASTBLOCK) {
- startblock = (mtd->size >> this->bbt_erase_shift) -1;
+ startblock = (mtd->size >> this->bbt_erase_shift) - 1;
dir = -1;
} else {
startblock = 0;
@@ -357,13 +509,16 @@
td->pages[i] = -1;
/* Scan the maximum number of blocks */
for (block = 0; block < td->maxblocks; block++) {
+
int actblock = startblock + dir * block;
+ loff_t offs = actblock << this->bbt_erase_shift;
+
/* Read first page */
- 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);
+ scan_read_raw(mtd, buf, offs, mtd->writesize);
+ if (!check_pattern(buf, scanlen, mtd->writesize, td)) {
+ td->pages[i] = actblock << blocktopage;
if (td->options & NAND_BBT_VERSION) {
- td->version[i] = buf[mtd->oobblock + td->veroffs];
+ td->version[i] = buf[mtd->writesize + td->veroffs];
}
break;
}
@@ -373,9 +528,10 @@
/* Check, if we found a bbt for each requested chip */
for (i = 0; i < chips; i++) {
if (td->pages[i] == -1)
- printk (KERN_WARNING "Bad block table not found for chip %d\n", i);
+ printk(KERN_WARNING "Bad block table not found for chip %d\n", i);
else
- printk (KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i], td->version[i]);
+ printk(KERN_DEBUG "Bad block table found at page %d, version 0x%02X\n", td->pages[i],
+ td->version[i]);
}
return 0;
}
@@ -389,21 +545,19 @@
*
* Search and read the bad block table(s)
*/
-static int search_read_bbts (struct mtd_info *mtd, uint8_t *buf,
- struct nand_bbt_descr *td, struct nand_bbt_descr *md)
+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_bbt(mtd, buf, td);
/* Search the mirror table */
if (md)
- search_bbt (mtd, buf, md);
+ search_bbt(mtd, buf, md);
/* Force result check */
return 1;
}
-
/**
* write_bbt - [GENERIC] (Re)write the bad block table
*
@@ -416,25 +570,31 @@
* (Re)write the bad block table
*
*/
-static int write_bbt (struct mtd_info *mtd, uint8_t *buf,
- struct nand_bbt_descr *td, struct nand_bbt_descr *md, int chipsel)
+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;
- struct nand_oobinfo oobinfo;
struct erase_info einfo;
int i, j, res, chip = 0;
int bits, startblock, dir, page, offs, numblocks, sft, sftmsk;
- int nrchips, bbtoffs, pageoffs;
+ int nrchips, bbtoffs, pageoffs, ooboffs;
uint8_t msk[4];
uint8_t rcode = td->reserved_block_code;
size_t retlen, len = 0;
loff_t to;
+ struct mtd_oob_ops ops;
+
+ ops.ooblen = mtd->oobsize;
+ ops.ooboffs = 0;
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
if (!rcode)
rcode = 0xff;
/* Write bad block table per chip rather than per device ? */
if (td->options & NAND_BBT_PERCHIP) {
- numblocks = (int) (this->chipsize >> this->bbt_erase_shift);
+ numblocks = (int)(this->chipsize >> this->bbt_erase_shift);
/* Full device write or specific chip ? */
if (chipsel == -1) {
nrchips = this->numchips;
@@ -443,7 +603,7 @@
chip = chipsel;
}
} else {
- numblocks = (int) (mtd->size >> this->bbt_erase_shift);
+ numblocks = (int)(mtd->size >> this->bbt_erase_shift);
nrchips = 1;
}
@@ -472,27 +632,38 @@
for (i = 0; i < td->maxblocks; i++) {
int block = startblock + dir * i;
/* Check, if the block is bad */
- switch ((this->bbt[block >> 2] >> (2 * (block & 0x03))) & 0x03) {
+ switch ((this->bbt[block >> 2] >>
+ (2 * (block & 0x03))) & 0x03) {
case 0x01:
case 0x03:
continue;
}
- page = block << (this->bbt_erase_shift - this->page_shift);
+ page = block <<
+ (this->bbt_erase_shift - this->page_shift);
/* Check, if the block is used by the mirror table */
if (!md || md->pages[chip] != page)
goto write;
}
- printk (KERN_ERR "No space left to write bad block table\n");
+ 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;
+ msk[2] = ~rcode;
switch (bits) {
- case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x01; break;
- case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01; msk[2] = ~rcode; msk[3] = 0x03; break;
- case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C; msk[2] = ~rcode; msk[3] = 0x0f; break;
- case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F; msk[2] = ~rcode; msk[3] = 0xff; break;
+ case 1: sft = 3; sftmsk = 0x07; msk[0] = 0x00; msk[1] = 0x01;
+ msk[3] = 0x01;
+ break;
+ case 2: sft = 2; sftmsk = 0x06; msk[0] = 0x00; msk[1] = 0x01;
+ msk[3] = 0x03;
+ break;
+ case 4: sft = 1; sftmsk = 0x04; msk[0] = 0x00; msk[1] = 0x0C;
+ msk[3] = 0x0f;
+ break;
+ case 8: sft = 0; sftmsk = 0x00; msk[0] = 0x00; msk[1] = 0x0F;
+ msk[3] = 0xff;
+ break;
default: return -EINVAL;
}
@@ -500,82 +671,92 @@
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 */
to &= ~((loff_t) ((1 << this->bbt_erase_shift) - 1));
len = 1 << this->bbt_erase_shift;
- res = mtd->read_ecc (mtd, to, len, &retlen, buf, &buf[len], &oobinfo);
+ res = mtd->read(mtd, to, len, &retlen, buf);
if (res < 0) {
if (retlen != len) {
- printk (KERN_INFO "nand_bbt: Error reading block for writing the bad block table\n");
+ printk(KERN_INFO "nand_bbt: Error "
+ "reading block for writing "
+ "the bad block table\n");
return res;
}
- printk (KERN_WARNING "nand_bbt: ECC error while reading block for writing bad block table\n");
+ printk(KERN_WARNING "nand_bbt: ECC error "
+ "while reading block for writing "
+ "bad block table\n");
}
+ /* Read oob data */
+ ops.ooblen = (len >> this->page_shift) * mtd->oobsize;
+ ops.oobbuf = &buf[len];
+ res = mtd->read_oob(mtd, to + mtd->writesize, &ops);
+ if (res < 0 || ops.oobretlen != ops.ooblen)
+ goto outerr;
+
/* Calc the byte offset in the buffer */
pageoffs = page - (int)(to >> this->page_shift);
offs = pageoffs << this->page_shift;
/* Preset the bbt area with 0xff */
- memset (&buf[offs], 0xff, (size_t)(numblocks >> sft));
- /* Preset the bbt's oob area with 0xff */
- memset (&buf[len + pageoffs * mtd->oobsize], 0xff,
- ((len >> this->page_shift) - pageoffs) * mtd->oobsize);
- if (td->options & NAND_BBT_VERSION) {
- buf[len + (pageoffs * mtd->oobsize) + td->veroffs] = td->version[chip];
- }
+ memset(&buf[offs], 0xff, (size_t) (numblocks >> sft));
+ ooboffs = len + (pageoffs * mtd->oobsize);
+
} else {
/* Calc length */
len = (size_t) (numblocks >> sft);
/* Make it page aligned ! */
- len = (len + (mtd->oobblock-1)) & ~(mtd->oobblock-1);
+ len = (len + (mtd->writesize - 1)) &
+ ~(mtd->writesize - 1);
/* Preset the buffer with 0xff */
- memset (buf, 0xff, len + (len >> this->page_shift) * mtd->oobsize);
+ memset(buf, 0xff, len +
+ (len >> this->page_shift)* mtd->oobsize);
offs = 0;
+ ooboffs = len;
/* Pattern is located in oob area of first page */
- memcpy (&buf[len + td->offs], td->pattern, td->len);
- if (td->options & NAND_BBT_VERSION) {
- buf[len + td->veroffs] = td->version[chip];
- }
+ memcpy(&buf[ooboffs + td->offs], td->pattern, td->len);
}
+ if (td->options & NAND_BBT_VERSION)
+ buf[ooboffs + td->veroffs] = td->version[chip];
+
/* walk through the memory table */
- for (i = 0; i < numblocks; ) {
+ for (i = 0; i < numblocks;) {
uint8_t dat;
dat = this->bbt[bbtoffs + (i >> 2)];
- for (j = 0; j < 4; j++ , i++) {
+ for (j = 0; j < 4; j++, i++) {
int sftcnt = (i << (3 - sft)) & sftmsk;
/* Do not store the reserved bbt blocks ! */
- buf[offs + (i >> sft)] &= ~(msk[dat & 0x03] << sftcnt);
+ buf[offs + (i >> sft)] &=
+ ~(msk[dat & 0x03] << sftcnt);
dat >>= 2;
}
}
- memset (&einfo, 0, sizeof (einfo));
+ memset(&einfo, 0, sizeof(einfo));
einfo.mtd = mtd;
- einfo.addr = (unsigned long) to;
+ einfo.addr = (unsigned long)to;
einfo.len = 1 << this->bbt_erase_shift;
- res = nand_erase_nand (mtd, &einfo, 1);
- if (res < 0) {
- printk (KERN_WARNING "nand_bbt: Error during block erase: %d\n", res);
- return res;
- }
+ res = nand_erase_nand(mtd, &einfo, 1);
+ if (res < 0)
+ goto outerr;
- 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",
- (unsigned int) to, td->version[chip]);
+ res = scan_write_bbt(mtd, to, len, buf, &buf[len]);
+ if (res < 0)
+ goto outerr;
+
+ 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;
+
+ outerr:
+ printk(KERN_WARNING
+ "nand_bbt: Error while writing bad block table %d\n", res);
+ return res;
}
/**
@@ -586,29 +767,27 @@
* The function creates a memory based bbt by scanning the device
* for manufacturer / software marked good / bad blocks
*/
-static int nand_memory_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
+static inline int nand_memory_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
{
struct nand_chip *this = mtd->priv;
- /* Ensure that we only scan for the pattern and nothing else */
- bd->options = 0;
- create_bbt (mtd, this->data_buf, bd, -1);
- return 0;
+ bd->options &= ~NAND_BBT_SCANEMPTY;
+ return create_bbt(mtd, this->buffers->databuf, bd, -1);
}
/**
- * check_create - [GENERIC] create and write bbt(s) if neccecary
+ * check_create - [GENERIC] create and write bbt(s) if necessary
* @mtd: MTD device structure
* @buf: temporary buffer
* @bd: descriptor for the good/bad block search pattern
*
* The function checks the results of the previous call to read_bbt
- * and creates / updates the bbt(s) if neccecary
- * Creation is neccecary if no bbt was found for the chip/device
- * Update is neccecary if one of the tables is missing or the
+ * and creates / updates the bbt(s) if necessary
+ * Creation is necessary if no bbt was found for the chip/device
+ * Update is necessary if one of the tables is missing or the
* version nr. of one table is less than the other
*/
-static int check_create (struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
+static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd)
{
int i, chips, writeops, chipsel, res;
struct nand_chip *this = mtd->priv;
@@ -676,35 +855,35 @@
rd = td;
goto writecheck;
}
-create:
+ create:
/* Create the bad block table by scanning the device ? */
if (!(td->options & NAND_BBT_CREATE))
continue;
/* Create the table in memory by scanning the chip(s) */
- create_bbt (mtd, buf, bd, chipsel);
+ create_bbt(mtd, buf, bd, chipsel);
td->version[i] = 1;
if (md)
md->version[i] = 1;
-writecheck:
+ writecheck:
/* read back first ? */
if (rd)
- read_abs_bbt (mtd, buf, rd, chipsel);
+ read_abs_bbt(mtd, buf, rd, chipsel);
/* If they weren't versioned, read both. */
if (rd2)
- read_abs_bbt (mtd, buf, rd2, chipsel);
+ read_abs_bbt(mtd, buf, rd2, chipsel);
/* Write the bad block table to the device ? */
if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) {
- res = write_bbt (mtd, buf, td, md, chipsel);
+ res = write_bbt(mtd, buf, td, md, chipsel);
if (res < 0)
return res;
}
/* Write the mirror bad block table to the device ? */
if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) {
- res = write_bbt (mtd, buf, md, td, chipsel);
+ res = write_bbt(mtd, buf, md, td, chipsel);
if (res < 0)
return res;
}
@@ -721,7 +900,7 @@
* accidental erasures / writes. The regions are identified by
* the mark 0x02.
*/
-static void mark_bbt_region (struct mtd_info *mtd, struct nand_bbt_descr *td)
+static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
{
struct nand_chip *this = mtd->priv;
int i, j, chips, block, nrblocks, update;
@@ -739,7 +918,8 @@
for (i = 0; i < chips; i++) {
if ((td->options & NAND_BBT_ABSPAGE) ||
!(td->options & NAND_BBT_WRITE)) {
- if (td->pages[i] == -1) continue;
+ if (td->pages[i] == -1)
+ continue;
block = td->pages[i] >> (this->bbt_erase_shift - this->page_shift);
block <<= 1;
oldval = this->bbt[(block >> 3)];
@@ -759,7 +939,8 @@
oldval = this->bbt[(block >> 3)];
newval = oldval | (0x2 << (block & 0x06));
this->bbt[(block >> 3)] = newval;
- if (oldval != newval) update = 1;
+ if (oldval != newval)
+ update = 1;
block += 2;
}
/* If we want reserved blocks to be recorded to flash, and some
@@ -784,7 +965,7 @@
* by calling the nand_free_bbt function.
*
*/
-int nand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd)
+int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
{
struct nand_chip *this = mtd->priv;
int len, res = 0;
@@ -793,53 +974,56 @@
struct nand_bbt_descr *md = this->bbt_md;
len = mtd->size >> (this->bbt_erase_shift + 2);
- /* Allocate memory (2bit per block) */
- this->bbt = kmalloc (len, GFP_KERNEL);
+ /* Allocate memory (2bit per block) and clear the memory bad block table */
+ this->bbt = kzalloc(len, GFP_KERNEL);
if (!this->bbt) {
- printk (KERN_ERR "nand_scan_bbt: Out of memory\n");
+ printk(KERN_ERR "nand_scan_bbt: Out of memory\n");
return -ENOMEM;
}
- /* Clear the memory bad block table */
- memset (this->bbt, 0x00, len);
/* If no primary table decriptor is given, scan the device
* to build a memory based bad block table
*/
- if (!td)
- return nand_memory_bbt(mtd, bd);
+ if (!td) {
+ if ((res = nand_memory_bbt(mtd, bd))) {
+ printk(KERN_ERR "nand_bbt: Can't scan flash and build the RAM-based BBT\n");
+ kfree(this->bbt);
+ this->bbt = NULL;
+ }
+ return res;
+ }
/* Allocate a temporary buffer for one eraseblock incl. oob */
len = (1 << this->bbt_erase_shift);
len += (len >> this->page_shift) * mtd->oobsize;
- buf = kmalloc (len, GFP_KERNEL);
+ buf = vmalloc(len);
if (!buf) {
- printk (KERN_ERR "nand_bbt: Out of memory\n");
- kfree (this->bbt);
+ printk(KERN_ERR "nand_bbt: Out of memory\n");
+ kfree(this->bbt);
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);
+ res = read_abs_bbts(mtd, buf, td, md);
} else {
/* Search the bad block table using a pattern in oob */
- res = search_read_bbts (mtd, buf, td, md);
+ res = search_read_bbts(mtd, buf, td, md);
}
if (res)
- res = check_create (mtd, buf, bd);
+ res = check_create(mtd, buf, bd);
/* Prevent the bbt regions from erasing / writing */
- mark_bbt_region (mtd, td);
+ mark_bbt_region(mtd, td);
if (md)
- mark_bbt_region (mtd, md);
+ mark_bbt_region(mtd, md);
- kfree (buf);
+ vfree(buf);
return res;
}
-
/**
* nand_update_bbt - [NAND Interface] update bad block table(s)
* @mtd: MTD device structure
@@ -847,7 +1031,7 @@
*
* The function updates the bad block table(s)
*/
-int nand_update_bbt (struct mtd_info *mtd, loff_t offs)
+int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
{
struct nand_chip *this = mtd->priv;
int len, res = 0, writeops = 0;
@@ -863,9 +1047,9 @@
/* Allocate a temporary buffer for one eraseblock incl. oob */
len = (1 << this->bbt_erase_shift);
len += (len >> this->page_shift) * mtd->oobsize;
- buf = kmalloc (len, GFP_KERNEL);
+ buf = kmalloc(len, GFP_KERNEL);
if (!buf) {
- printk (KERN_ERR "nand_update_bbt: Out of memory\n");
+ printk(KERN_ERR "nand_update_bbt: Out of memory\n");
return -ENOMEM;
}
@@ -873,7 +1057,7 @@
/* Do we have a bbt per chip ? */
if (td->options & NAND_BBT_PERCHIP) {
- chip = (int) (offs >> this->chip_shift);
+ chip = (int)(offs >> this->chip_shift);
chipsel = chip;
} else {
chip = 0;
@@ -886,29 +1070,26 @@
/* Write the bad block table to the device ? */
if ((writeops & 0x01) && (td->options & NAND_BBT_WRITE)) {
- res = write_bbt (mtd, buf, td, md, chipsel);
+ res = write_bbt(mtd, buf, td, md, chipsel);
if (res < 0)
goto out;
}
/* Write the mirror bad block table to the device ? */
if ((writeops & 0x02) && md && (md->options & NAND_BBT_WRITE)) {
- res = write_bbt (mtd, buf, md, td, chipsel);
+ res = write_bbt(mtd, buf, md, td, chipsel);
}
-out:
- kfree (buf);
+ out:
+ kfree(buf);
return res;
}
/* Define some generic bad / good block scan pattern which are used
- * while scanning a device for factory marked good / bad blocks
- *
- * The memory based patterns just
- */
+ * while scanning a device for factory marked good / bad blocks. */
static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
static struct nand_bbt_descr smallpage_memorybased = {
- .options = 0,
+ .options = NAND_BBT_SCAN2NDPAGE,
.offs = 5,
.len = 1,
.pattern = scan_ff_pattern
@@ -922,14 +1103,14 @@
};
static struct nand_bbt_descr smallpage_flashbased = {
- .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES,
+ .options = NAND_BBT_SCAN2NDPAGE,
.offs = 5,
.len = 1,
.pattern = scan_ff_pattern
};
static struct nand_bbt_descr largepage_flashbased = {
- .options = NAND_BBT_SCANEMPTY | NAND_BBT_SCANALLPAGES,
+ .options = NAND_BBT_SCAN2NDPAGE,
.offs = 0,
.len = 2,
.pattern = scan_ff_pattern
@@ -977,7 +1158,7 @@
* support for the device and calls the nand_scan_bbt function
*
*/
-int nand_default_bbt (struct mtd_info *mtd)
+int nand_default_bbt(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
@@ -987,7 +1168,7 @@
* of the good / bad information, so we _must_ store
* this information in a good / bad table during
* startup
- */
+ */
if (this->options & NAND_IS_AND) {
/* Use the default pattern descriptors */
if (!this->bbt_td) {
@@ -995,10 +1176,9 @@
this->bbt_md = &bbt_mirror_descr;
}
this->options |= NAND_USE_FLASH_BBT;
- return nand_scan_bbt (mtd, &agand_flashbased);
+ 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 */
@@ -1007,18 +1187,17 @@
this->bbt_md = &bbt_mirror_descr;
}
if (!this->badblock_pattern) {
- this->badblock_pattern = (mtd->oobblock > 512) ?
- &largepage_flashbased : &smallpage_flashbased;
+ this->badblock_pattern = (mtd->writesize > 512) ? &largepage_flashbased : &smallpage_flashbased;
}
} else {
this->bbt_td = NULL;
this->bbt_md = NULL;
if (!this->badblock_pattern) {
- this->badblock_pattern = (mtd->oobblock > 512) ?
- &largepage_memorybased : &smallpage_memorybased;
+ this->badblock_pattern = (mtd->writesize > 512) ?
+ &largepage_memorybased : &smallpage_memorybased;
}
}
- return nand_scan_bbt (mtd, this->badblock_pattern);
+ return nand_scan_bbt(mtd, this->badblock_pattern);
}
/**
@@ -1027,26 +1206,35 @@
* @offs: offset in the device
* @allowbbt: allow access to bad block table region
*
- */
-int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt)
+*/
+int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
{
struct nand_chip *this = mtd->priv;
int block;
- uint8_t res;
+ uint8_t res;
/* Get block number * 2 */
- block = (int) (offs >> (this->bbt_erase_shift - 1));
+ block = (int)(offs >> (this->bbt_erase_shift - 1));
res = (this->bbt[block >> 3] >> (block & 0x06)) & 0x03;
MTDDEBUG (MTD_DEBUG_LEVEL2, "nand_isbad_bbt(): bbt info for offs 0x%08x: "
"(block %d) 0x%02x\n", (unsigned int)offs, res, block >> 1);
switch ((int)res) {
- case 0x00: return 0;
- case 0x01: return 1;
- case 0x02: return allowbbt ? 0 : 1;
+ case 0x00:
+ return 0;
+ case 0x01:
+ return 1;
+ case 0x02:
+ return allowbbt ? 0 : 1;
}
return 1;
}
+/* XXX U-BOOT XXX */
+#if 0
+EXPORT_SYMBOL(nand_scan_bbt);
+EXPORT_SYMBOL(nand_default_bbt);
+#endif
+
#endif
diff --git a/drivers/mtd/nand/nand_ecc.c b/drivers/mtd/nand/nand_ecc.c
index 4c532b0..e1d5154 100644
--- a/drivers/mtd/nand/nand_ecc.c
+++ b/drivers/mtd/nand/nand_ecc.c
@@ -7,7 +7,9 @@
* 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 $
+ * Copyright (C) 2006 Thomas Gleixner <tglx@linutronix.de>
+ *
+ * $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
@@ -39,6 +41,14 @@
#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)
+/* XXX U-BOOT XXX */
+#if 0
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mtd/nand_ecc.h>
+#endif
+
#include<linux/mtd/mtd.h>
/*
@@ -128,6 +138,10 @@
return 0;
}
+/* XXX U-BOOT XXX */
+#if 0
+EXPORT_SYMBOL(nand_calculate_ecc);
+#endif
#endif /* CONFIG_NAND_SPL */
static inline int countbits(uint32_t byte)
@@ -197,4 +211,9 @@
return -1;
}
+/* XXX U-BOOT XXX */
+#if 0
+EXPORT_SYMBOL(nand_correct_data);
+#endif
+
#endif
diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
index 7363490..f8b96cf 100644
--- a/drivers/mtd/nand/nand_ids.c
+++ b/drivers/mtd/nand/nand_ids.c
@@ -2,8 +2,8 @@
* drivers/mtd/nandids.c
*
* Copyright (C) 2002 Thomas Gleixner (tglx@linutronix.de)
- *
- * $Id: nand_ids.c,v 1.10 2004/05/26 13:40:12 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
@@ -16,7 +16,6 @@
#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)
#include <linux/mtd/nand.h>
-
/*
* Chip ID list
*
@@ -29,13 +28,15 @@
* 512 512 Byte page size
*/
struct nand_flash_dev nand_flash_ids[] = {
+
+#ifdef CONFIG_MTD_NAND_MUSEUM_IDS
{"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0},
{"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0},
{"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0},
{"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0},
{"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0},
{"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0},
- {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0},
+ {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 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},
@@ -44,6 +45,7 @@
{"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},
+#endif
{"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0},
{"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0},
@@ -61,52 +63,72 @@
{"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", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16},
+ {"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
- * and the erasesize is determined from the extended id bytes
- */
+ /*
+ * These are the new chips with large page size. The pagesize and the
+ * erasesize is determined from the extended id bytes
+ */
+#define LP_OPTIONS (NAND_SAMSUNG_LP_OPTIONS | NAND_NO_READRDY | NAND_NO_AUTOINCR)
+#define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16)
+
+ /*512 Megabit */
+ {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, LP_OPTIONS},
+ {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, LP_OPTIONS},
+ {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, LP_OPTIONS16},
+ {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, LP_OPTIONS16},
+
/* 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 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
- {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+ {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, LP_OPTIONS},
+ {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, LP_OPTIONS},
+ {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, LP_OPTIONS16},
+ {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, LP_OPTIONS16},
/* 2 Gigabit */
- {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 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},
+ {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, LP_OPTIONS},
+ {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, LP_OPTIONS},
+ {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, LP_OPTIONS16},
+ {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, LP_OPTIONS16},
/* 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},
+ {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, LP_OPTIONS},
+ {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, LP_OPTIONS},
+ {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, LP_OPTIONS16},
+ {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, LP_OPTIONS16},
/* 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 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
- {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_BUSWIDTH_16 | NAND_NO_AUTOINCR},
+ {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, LP_OPTIONS},
+ {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, LP_OPTIONS},
+ {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, LP_OPTIONS16},
+ {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, LP_OPTIONS16},
/* 16 Gigabit */
- {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, NAND_SAMSUNG_LP_OPTIONS | NAND_NO_AUTOINCR},
- {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 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},
+ {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, LP_OPTIONS},
+ {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, LP_OPTIONS},
+ {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, LP_OPTIONS16},
+ {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, LP_OPTIONS16},
- /* 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
+ /*
+ * 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
*/
- {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000, NAND_IS_AND | NAND_NO_AUTOINCR | NAND_4PAGE_ARRAY},
+ {"AND 128MiB 3,3V 8-bit", 0x01, 2048, 128, 0x4000,
+ NAND_IS_AND | NAND_NO_AUTOINCR |NAND_NO_READRDY | NAND_4PAGE_ARRAY |
+ BBT_AUTO_REFRESH
+ },
{NULL,}
};
@@ -121,6 +143,7 @@
{NAND_MFR_NATIONAL, "National"},
{NAND_MFR_RENESAS, "Renesas"},
{NAND_MFR_STMICRO, "ST Micro"},
+ {NAND_MFR_HYNIX, "Hynix"},
{NAND_MFR_MICRON, "Micron"},
{0x0, "Unknown"}
};
diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
index 828cc33..78e70cc 100644
--- a/drivers/mtd/nand/nand_util.c
+++ b/drivers/mtd/nand/nand_util.c
@@ -39,6 +39,9 @@
#include <malloc.h>
#include <div64.h>
+
+#include <asm/errno.h>
+#include <linux/mtd/mtd.h>
#include <nand.h>
#include <jffs2/jffs2.h>
@@ -69,71 +72,33 @@
int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)
{
struct jffs2_unknown_node cleanmarker;
- int clmpos = 0;
- int clmlen = 8;
erase_info_t erase;
ulong erase_length;
- int isNAND;
int bbtest = 1;
int result;
int percent_complete = -1;
int (*nand_block_bad_old)(struct mtd_info *, loff_t, int) = NULL;
const char *mtd_device = meminfo->name;
+ struct mtd_oob_ops oob_opts;
+ struct nand_chip *chip = meminfo->priv;
+ uint8_t buf[64];
+ memset(buf, 0, sizeof(buf));
memset(&erase, 0, sizeof(erase));
+ memset(&oob_opts, 0, sizeof(oob_opts));
erase.mtd = meminfo;
erase.len = meminfo->erasesize;
erase.addr = opts->offset;
erase_length = opts->length;
- isNAND = meminfo->type == MTD_NANDFLASH ? 1 : 0;
- if (opts->jffs2) {
- cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
- cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
- if (isNAND) {
- struct nand_oobinfo *oobinfo = &meminfo->oobinfo;
-
- /* check for autoplacement */
- if (oobinfo->useecc == MTD_NANDECC_AUTOPLACE) {
- /* get the position of the free bytes */
- if (!oobinfo->oobfree[0][1]) {
- printf(" Eeep. Autoplacement selected "
- "and no empty space in oob\n");
- return -1;
- }
- clmpos = oobinfo->oobfree[0][0];
- clmlen = oobinfo->oobfree[0][1];
- if (clmlen > 8)
- clmlen = 8;
- } else {
- /* legacy mode */
- switch (meminfo->oobsize) {
- case 8:
- clmpos = 6;
- clmlen = 2;
- break;
- case 16:
- clmpos = 8;
- clmlen = 8;
- break;
- case 64:
- clmpos = 16;
- clmlen = 8;
- break;
- }
- }
-
- cleanmarker.totlen = cpu_to_je32(8);
- } else {
- cleanmarker.totlen =
- cpu_to_je32(sizeof(struct jffs2_unknown_node));
- }
- cleanmarker.hdr_crc = cpu_to_je32(
- crc32_no_comp(0, (unsigned char *) &cleanmarker,
- sizeof(struct jffs2_unknown_node) - 4));
- }
+ cleanmarker.magic = cpu_to_je16 (JFFS2_MAGIC_BITMASK);
+ cleanmarker.nodetype = cpu_to_je16 (JFFS2_NODETYPE_CLEANMARKER);
+ cleanmarker.totlen = cpu_to_je32(8);
+ cleanmarker.hdr_crc = cpu_to_je32(
+ crc32_no_comp(0, (unsigned char *) &cleanmarker,
+ sizeof(struct jffs2_unknown_node) - 4));
/* scrub option allows to erase badblock. To prevent internal
* check from erase() method, set block check method to dummy
@@ -163,7 +128,7 @@
for (;
erase.addr < opts->offset + erase_length;
erase.addr += meminfo->erasesize) {
-
+
WATCHDOG_RESET ();
if (!opts->scrub && bbtest) {
@@ -194,25 +159,21 @@
/* format for JFFS2 ? */
if (opts->jffs2) {
- /* write cleanmarker */
- if (isNAND) {
- size_t written;
- result = meminfo->write_oob(meminfo,
- erase.addr + clmpos,
- clmlen,
- &written,
- (unsigned char *)
- &cleanmarker);
- if (result != 0) {
- printf("\n%s: MTD writeoob failure: %d\n",
- mtd_device, result);
- continue;
- }
- } else {
- printf("\n%s: this erase routine only supports"
- " NAND devices!\n",
- mtd_device);
+ chip->ops.len = chip->ops.ooblen = 64;
+ chip->ops.datbuf = NULL;
+ chip->ops.oobbuf = buf;
+ chip->ops.ooboffs = chip->badblockpos & ~0x01;
+
+ result = meminfo->write_oob(meminfo,
+ erase.addr + meminfo->oobsize,
+ &chip->ops);
+ if (result != 0) {
+ printf("\n%s: MTD writeoob failure: %d\n",
+ mtd_device, result);
+ continue;
}
+ else
+ printf("%s: MTD writeoob at 0x%08x\n",mtd_device, erase.addr + meminfo->oobsize );
}
if (!opts->quiet) {
@@ -232,11 +193,11 @@
percent_complete = percent;
printf("\rErasing at 0x%x -- %3d%% complete.",
- erase.addr, percent);
+ erase.addr, percent);
if (opts->jffs2 && result == 0)
- printf(" Cleanmarker written at 0x%x.",
- erase.addr);
+ printf(" Cleanmarker written at 0x%x.",
+ erase.addr);
}
}
}
@@ -253,6 +214,9 @@
return 0;
}
+/* XXX U-BOOT XXX */
+#if 0
+
#define MAX_PAGE_SIZE 2048
#define MAX_OOB_SIZE 64
@@ -263,26 +227,189 @@
static unsigned char oob_buf[MAX_OOB_SIZE];
/* OOB layouts to pass into the kernel as default */
-static struct nand_oobinfo none_oobinfo = {
+static struct nand_ecclayout none_ecclayout = {
.useecc = MTD_NANDECC_OFF,
};
-static struct nand_oobinfo jffs2_oobinfo = {
+static struct nand_ecclayout jffs2_ecclayout = {
.useecc = MTD_NANDECC_PLACE,
.eccbytes = 6,
.eccpos = { 0, 1, 2, 3, 6, 7 }
};
-static struct nand_oobinfo yaffs_oobinfo = {
+static struct nand_ecclayout yaffs_ecclayout = {
.useecc = MTD_NANDECC_PLACE,
.eccbytes = 6,
.eccpos = { 8, 9, 10, 13, 14, 15}
};
-static struct nand_oobinfo autoplace_oobinfo = {
+static struct nand_ecclayout autoplace_ecclayout = {
.useecc = MTD_NANDECC_AUTOPLACE
};
+#endif
+
+/**
+ * nand_fill_oob - [Internal] Transfer client buffer to oob
+ * @chip: nand chip structure
+ * @oob: oob data buffer
+ * @ops: oob ops structure
+ *
+ * Copied from nand_base.c
+ */
+static uint8_t *nand_fill_oob(struct nand_chip *chip, uint8_t *oob,
+ struct mtd_oob_ops *ops)
+{
+ size_t len = ops->ooblen;
+
+ switch(ops->mode) {
+
+ case MTD_OOB_PLACE:
+ case MTD_OOB_RAW:
+ memcpy(chip->oob_poi + ops->ooboffs, oob, len);
+ return oob + len;
+
+ case MTD_OOB_AUTO: {
+ struct nand_oobfree *free = chip->ecc.layout->oobfree;
+ uint32_t boffs = 0, woffs = ops->ooboffs;
+ size_t bytes = 0;
+
+ for(; free->length && len; free++, len -= bytes) {
+ /* Write request not from offset 0 ? */
+ if (unlikely(woffs)) {
+ if (woffs >= free->length) {
+ woffs -= free->length;
+ continue;
+ }
+ boffs = free->offset + woffs;
+ bytes = min_t(size_t, len,
+ (free->length - woffs));
+ woffs = 0;
+ } else {
+ bytes = min_t(size_t, len, free->length);
+ boffs = free->offset;
+ }
+ memcpy(chip->oob_poi + boffs, oob, bytes);
+ oob += bytes;
+ }
+ return oob;
+ }
+ default:
+ BUG();
+ }
+ return NULL;
+}
+
+#define NOTALIGNED(x) (x & (chip->subpagesize - 1)) != 0
+
+
+/* copied from nand_base.c: nand_do_write_ops()
+ * Only very small changes
+ */
+int nand_write_opts(nand_info_t *mtd, loff_t to, mtd_oob_ops_t *ops)
+{
+ int chipnr, realpage, page, blockmask, column;
+ struct nand_chip *chip = mtd->priv;
+ uint32_t writelen = ops->len;
+ uint8_t *oob = ops->oobbuf;
+ uint8_t *buf = ops->datbuf;
+ int ret, subpage;
+
+ ops->retlen = 0;
+ if (!writelen)
+ return 0;
+
+ printk("nand_write_opts: to: 0x%08x, ops->len: 0x%08x\n", to, ops->len);
+
+ /* reject writes, which are not page aligned */
+ if (NOTALIGNED(to) || NOTALIGNED(ops->len)) {
+ printk(KERN_NOTICE "nand_write: "
+ "Attempt to write not page aligned data\n");
+ return -EINVAL;
+ }
+
+ column = to & (mtd->writesize - 1);
+ subpage = column || (writelen & (mtd->writesize - 1));
+
+ if (subpage && oob) {
+ printk(KERN_NOTICE "nand_write: "
+ "Attempt to write oob to subpage\n");
+ return -EINVAL;
+ }
+
+ chipnr = (int)(to >> chip->chip_shift);
+ chip->select_chip(mtd, chipnr);
+
+ /* XXX U-BOOT XXX */
+#if 0
+ /* Check, if it is write protected */
+ if (nand_check_wp(mtd))
+ return -EIO;
+#endif
+
+ realpage = (int)(to >> chip->page_shift);
+ page = realpage & chip->pagemask;
+ blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
+
+ /* Invalidate the page cache, when we write to the cached page */
+ if (to <= (chip->pagebuf << chip->page_shift) &&
+ (chip->pagebuf << chip->page_shift) < (to + ops->len))
+ chip->pagebuf = -1;
+
+ /* If we're not given explicit OOB data, let it be 0xFF */
+ if (likely(!oob)) {
+ printf("!oob, writing %d bytes with 0xff to chip->oob_poi (0x%08x)\n", mtd->oobsize, chip->oob_poi);
+ memset(chip->oob_poi, 0xff, mtd->oobsize);
+ }
+
+ while(1) {
+ int bytes = mtd->writesize;
+ int cached = writelen > bytes && page != blockmask;
+ uint8_t *wbuf = buf;
+
+ /* Partial page write ? */
+ if (unlikely(column || writelen < (mtd->writesize - 1))) {
+ cached = 0;
+ bytes = min_t(int, bytes - column, (int) writelen);
+ chip->pagebuf = -1;
+ memset(chip->buffers->databuf, 0xff, mtd->writesize);
+ memcpy(&chip->buffers->databuf[column], buf, bytes);
+ wbuf = chip->buffers->databuf;
+ }
+
+ if (unlikely(oob))
+ oob = nand_fill_oob(chip, oob, ops);
+
+ ret = chip->write_page(mtd, chip, wbuf, page, cached,
+ (ops->mode == MTD_OOB_RAW));
+ if (ret)
+ break;
+
+ writelen -= bytes;
+ if (!writelen)
+ break;
+
+ column = 0;
+ buf += bytes;
+ realpage++;
+
+ page = realpage & chip->pagemask;
+ /* Check, if we cross a chip boundary */
+ if (!page) {
+ chipnr++;
+ chip->select_chip(mtd, -1);
+ chip->select_chip(mtd, chipnr);
+ }
+ }
+
+ ops->retlen = ops->len - writelen;
+ if (unlikely(oob))
+ ops->oobretlen = ops->ooblen;
+ return ret;
+}
+
+/* XXX U-BOOT XXX */
+#if 0
/**
* nand_write_opts: - write image to NAND flash with support for various options
*
@@ -301,9 +428,9 @@
int blockstart = -1;
loff_t offs;
int readlen;
- int oobinfochanged = 0;
+ int ecclayoutchanged = 0;
int percent_complete = -1;
- struct nand_oobinfo old_oobinfo;
+ struct nand_ecclayout old_ecclayout;
ulong mtdoffset = opts->offset;
ulong erasesize_blockalign;
u_char *buffer = opts->buffer;
@@ -324,35 +451,35 @@
}
/* make sure device page sizes are valid */
- if (!(meminfo->oobsize == 16 && meminfo->oobblock == 512)
- && !(meminfo->oobsize == 8 && meminfo->oobblock == 256)
- && !(meminfo->oobsize == 64 && meminfo->oobblock == 2048)) {
+ if (!(meminfo->oobsize == 16 && meminfo->writesize == 512)
+ && !(meminfo->oobsize == 8 && meminfo->writesize == 256)
+ && !(meminfo->oobsize == 64 && meminfo->writesize == 2048)) {
printf("Unknown flash (not normal NAND)\n");
return -1;
}
/* read the current oob info */
- memcpy(&old_oobinfo, &meminfo->oobinfo, sizeof(old_oobinfo));
+ memcpy(&old_ecclayout, &meminfo->ecclayout, sizeof(old_ecclayout));
/* write without ecc? */
if (opts->noecc) {
- memcpy(&meminfo->oobinfo, &none_oobinfo,
- sizeof(meminfo->oobinfo));
- oobinfochanged = 1;
+ memcpy(&meminfo->ecclayout, &none_ecclayout,
+ sizeof(meminfo->ecclayout));
+ ecclayoutchanged = 1;
}
/* autoplace ECC? */
- if (opts->autoplace && (old_oobinfo.useecc != MTD_NANDECC_AUTOPLACE)) {
+ if (opts->autoplace && (old_ecclayout.useecc != MTD_NANDECC_AUTOPLACE)) {
- memcpy(&meminfo->oobinfo, &autoplace_oobinfo,
- sizeof(meminfo->oobinfo));
- oobinfochanged = 1;
+ memcpy(&meminfo->ecclayout, &autoplace_ecclayout,
+ sizeof(meminfo->ecclayout));
+ ecclayoutchanged = 1;
}
/* force OOB layout for jffs2 or yaffs? */
if (opts->forcejffs2 || opts->forceyaffs) {
- struct nand_oobinfo *oobsel =
- opts->forcejffs2 ? &jffs2_oobinfo : &yaffs_oobinfo;
+ struct nand_ecclayout *oobsel =
+ opts->forcejffs2 ? &jffs2_ecclayout : &yaffs_ecclayout;
if (meminfo->oobsize == 8) {
if (opts->forceyaffs) {
@@ -361,15 +488,15 @@
goto restoreoob;
}
/* Adjust number of ecc bytes */
- jffs2_oobinfo.eccbytes = 3;
+ jffs2_ecclayout.eccbytes = 3;
}
- memcpy(&meminfo->oobinfo, oobsel, sizeof(meminfo->oobinfo));
+ memcpy(&meminfo->ecclayout, oobsel, sizeof(meminfo->ecclayout));
}
/* get image length */
imglen = opts->length;
- pagelen = meminfo->oobblock
+ pagelen = meminfo->writesize
+ ((opts->writeoob != 0) ? meminfo->oobsize : 0);
/* check, if file is pagealigned */
@@ -379,11 +506,11 @@
}
/* check, if length fits into device */
- if (((imglen / pagelen) * meminfo->oobblock)
+ if (((imglen / pagelen) * meminfo->writesize)
> (meminfo->size - opts->offset)) {
printf("Image %d bytes, NAND page %d bytes, "
"OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->oobblock, meminfo->size);
+ imglen, pagelen, meminfo->writesize, meminfo->size);
printf("Input block does not fit into device\n");
goto restoreoob;
}
@@ -437,11 +564,11 @@
} while (offs < blockstart + erasesize_blockalign);
}
- readlen = meminfo->oobblock;
+ readlen = meminfo->writesize;
if (opts->pad && (imglen < readlen)) {
readlen = imglen;
memset(data_buf + readlen, 0xff,
- meminfo->oobblock - readlen);
+ meminfo->writesize - readlen);
}
/* read page data from input memory buffer */
@@ -474,7 +601,7 @@
/* write out the page data */
result = meminfo->write(meminfo,
mtdoffset,
- meminfo->oobblock,
+ meminfo->writesize,
&written,
(unsigned char *) &data_buf);
@@ -505,16 +632,16 @@
}
}
- mtdoffset += meminfo->oobblock;
+ mtdoffset += meminfo->writesize;
}
if (!opts->quiet)
printf("\n");
restoreoob:
- if (oobinfochanged) {
- memcpy(&meminfo->oobinfo, &old_oobinfo,
- sizeof(meminfo->oobinfo));
+ if (ecclayoutchanged) {
+ memcpy(&meminfo->ecclayout, &old_ecclayout,
+ sizeof(meminfo->ecclayout));
}
if (imglen > 0) {
@@ -548,22 +675,22 @@
int result;
/* make sure device page sizes are valid */
- if (!(meminfo->oobsize == 16 && meminfo->oobblock == 512)
- && !(meminfo->oobsize == 8 && meminfo->oobblock == 256)
- && !(meminfo->oobsize == 64 && meminfo->oobblock == 2048)) {
+ if (!(meminfo->oobsize == 16 && meminfo->writesize == 512)
+ && !(meminfo->oobsize == 8 && meminfo->writesize == 256)
+ && !(meminfo->oobsize == 64 && meminfo->writesize == 2048)) {
printf("Unknown flash (not normal NAND)\n");
return -1;
}
- pagelen = meminfo->oobblock
+ pagelen = meminfo->writesize
+ ((opts->readoob != 0) ? meminfo->oobsize : 0);
/* check, if length is not larger than device */
- if (((imglen / pagelen) * meminfo->oobblock)
+ if (((imglen / pagelen) * meminfo->writesize)
> (meminfo->size - opts->offset)) {
printf("Image %d bytes, NAND page %d bytes, "
"OOB area %u bytes, device size %u bytes\n",
- imglen, pagelen, meminfo->oobblock, meminfo->size);
+ imglen, pagelen, meminfo->writesize, meminfo->size);
printf("Input block is larger than device\n");
return -1;
}
@@ -621,7 +748,7 @@
/* read page data to memory buffer */
result = meminfo->read(meminfo,
mtdoffset,
- meminfo->oobblock,
+ meminfo->writesize,
&readlen,
(unsigned char *) &data_buf);
@@ -685,7 +812,7 @@
}
}
- mtdoffset += meminfo->oobblock;
+ mtdoffset += meminfo->writesize;
}
if (!opts->quiet)
@@ -699,7 +826,10 @@
/* return happy */
return 0;
}
+#endif
+/* XXX U-BOOT XXX */
+#if 0
/******************************************************************************
* Support for locking / unlocking operations of some NAND devices
*****************************************************************************/
@@ -784,7 +914,7 @@
this->select_chip(meminfo, chipnr);
- if ((offset & (meminfo->oobblock - 1)) != 0) {
+ if ((offset & (meminfo->writesize - 1)) != 0) {
printf ("nand_get_lock_status: "
"Start address must be beginning of "
"nand page!\n");
@@ -813,7 +943,7 @@
* @param meminfo nand mtd instance
* @param start start byte address
* @param length number of bytes to unlock (must be a multiple of
- * page size nand->oobblock)
+ * page size nand->writesize)
*
* @return 0 on success, -1 in case of error
*/
@@ -839,14 +969,14 @@
goto out;
}
- if ((start & (meminfo->oobblock - 1)) != 0) {
+ if ((start & (meminfo->writesize - 1)) != 0) {
printf ("nand_unlock: Start address must be beginning of "
"nand page!\n");
ret = -1;
goto out;
}
- if (length == 0 || (length & (meminfo->oobblock - 1)) != 0) {
+ if (length == 0 || (length & (meminfo->writesize - 1)) != 0) {
printf ("nand_unlock: Length must be a multiple of nand page "
"size!\n");
ret = -1;
@@ -875,5 +1005,6 @@
this->select_chip(meminfo, -1);
return ret;
}
+#endif
#endif