-/*
+/*
* drivers/mtd/nand/diskonchip.c
*
* (C) 2003 Red Hat, Inc.
+ * (C) 2004 Dan Brown <dan_brown@ieee.org>
+ * (C) 2004 Kalev Lember <kalev@smartlink.ee>
*
* Author: David Woodhouse <dwmw2@infradead.org>
+ * Additional Diskonchip 2000 and Millennium support by Dan Brown <dan_brown@ieee.org>
+ * Diskonchip Millennium Plus support by Kalev Lember <kalev@smartlink.ee>
+ *
+ * Error correction code lifted from the old docecc code
+ * Author: Fabrice Bellard (fabrice.bellard@netgem.com)
+ * Copyright (C) 2000 Netgem S.A.
+ * converted to the generic Reed-Solomon library by Thomas Gleixner <tglx@linutronix.de>
*
* Interface to generic NAND code for M-Systems DiskOnChip devices
*
- * $Id: diskonchip.c,v 1.23 2004/07/13 00:14:35 dbrown Exp $
+ * $Id: diskonchip.c,v 1.55 2005/11/07 11:14:30 gleixner Exp $
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/delay.h>
+#include <linux/rslib.h>
+#include <linux/moduleparam.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/inftl.h>
/* Where to look for the devices? */
-#ifndef CONFIG_MTD_DOCPROBE_ADDRESS
-#define CONFIG_MTD_DOCPROBE_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_DOCPROBE_HIGH
- 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
+#ifdef CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH
+ 0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000,
- 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
- 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000,
+ 0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
+ 0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000,
0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000,
#else /* CONFIG_MTD_DOCPROBE_HIGH */
- 0xc8000, 0xca000, 0xcc000, 0xce000,
+ 0xc8000, 0xca000, 0xcc000, 0xce000,
0xd0000, 0xd2000, 0xd4000, 0xd6000,
- 0xd8000, 0xda000, 0xdc000, 0xde000,
- 0xe0000, 0xe2000, 0xe4000, 0xe6000,
+ 0xd8000, 0xda000, 0xdc000, 0xde000,
+ 0xe0000, 0xe2000, 0xe4000, 0xe6000,
0xe8000, 0xea000, 0xec000, 0xee000,
#endif /* CONFIG_MTD_DOCPROBE_HIGH */
#elif defined(__PPC__)
0xe4000000,
#elif defined(CONFIG_MOMENCO_OCELOT)
0x2f000000,
- 0xff000000,
+ 0xff000000,
#elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C)
- 0xff000000,
-##else
+ 0xff000000,
+#else
#warning Unknown architecture for DiskOnChip. No default probe locations defined
#endif
0xffffffff };
static struct mtd_info *doclist = NULL;
struct doc_priv {
- unsigned long virtadr;
+ void __iomem *virtadr;
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;
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 };
#define INFTL_BBT_RESERVED_BLOCKS 4
+#define DoC_is_MillenniumPlus(doc) ((doc)->ChipID == DOC_ChipID_DocMilPlus16 || (doc)->ChipID == DOC_ChipID_DocMilPlus32)
#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;
-MODULE_PARM(debug, "i");
+static int debug = 0;
+module_param(debug, int, 0);
-static int try_dword=1;
-MODULE_PARM(try_dword, "i");
+static int try_dword = 1;
+module_param(try_dword, int, 0);
-static int no_ecc_failures=0;
-MODULE_PARM(no_ecc_failures, "i");
+static int no_ecc_failures = 0;
+module_param(no_ecc_failures, int, 0);
-static int no_autopart=0;
-MODULE_PARM(no_autopart, "i");
+static int no_autopart = 0;
+module_param(no_autopart, int, 0);
+
+static int show_firmware_partition = 0;
+module_param(show_firmware_partition, int, 0);
#ifdef MTD_NAND_DISKONCHIP_BBTWRITE
-static int inftl_bbt_write=1;
+static int inftl_bbt_write = 1;
#else
-static int inftl_bbt_write=0;
+static int inftl_bbt_write = 0;
#endif
-MODULE_PARM(inftl_bbt_write, "i");
+module_param(inftl_bbt_write, int, 0);
-static unsigned long doc_config_location = CONFIG_MTD_DOCPROBE_ADDRESS;
-MODULE_PARM(doc_config_location, "l");
+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 */
+#define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / 10)
+/* Number of roots */
+#define NROOTS 4
+/* First consective root */
+#define FCR 510
+/* Number of symbols */
+#define NN 1023
+
+/* the Reed Solomon control structure */
+static struct rs_control *rs_decoder;
+
+/*
+ * The HW decoder in the DoC ASIC's provides us a error syndrome,
+ * which we must convert to a standard syndrom usable by the generic
+ * Reed-Solomon library code.
+ *
+ * Fabrice Bellard figured this out in the old docecc code. I added
+ * 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)
+{
+ int i, j, nerr, errpos[8];
+ uint8_t parity;
+ uint16_t ds[4], s[5], tmp, errval[8], syn[4];
+
+ /* Convert the ecc bytes into words */
+ ds[0] = ((ecc[4] & 0xff) >> 0) | ((ecc[5] & 0x03) << 8);
+ ds[1] = ((ecc[5] & 0xfc) >> 2) | ((ecc[2] & 0x0f) << 6);
+ ds[2] = ((ecc[2] & 0xf0) >> 4) | ((ecc[3] & 0x3f) << 4);
+ ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2);
+ parity = ecc[1];
+
+ /* Initialize the syndrom buffer */
+ for (i = 0; i < NROOTS; i++)
+ s[i] = ds[0];
+ /*
+ * Evaluate
+ * 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)
+ continue;
+ tmp = rs->index_of[ds[j]];
+ for (i = 0; i < NROOTS; i++)
+ s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)];
+ }
+
+ /* Calc s[i] = s[i] / alpha^(v + i) */
+ for (i = 0; i < NROOTS; i++) {
+ if (syn[i])
+ syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i));
+ }
+ /* Call the decoder library */
+ nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval);
+
+ /* Incorrectable errors ? */
+ if (nerr < 0)
+ return nerr;
+
+ /*
+ * Correct the errors. The bitpositions are a bit of magic,
+ * but they are given by the design of the de/encoder circuit
+ * in the DoC ASIC's.
+ */
+ for (i = 0; i < nerr; i++) {
+ int index, bitpos, pos = 1015 - errpos[i];
+ uint8_t val;
+ if (pos >= NB_DATA && pos < 1019)
+ continue;
+ if (pos < NB_DATA) {
+ /* extract bit position (MSB first) */
+ pos = 10 * (NB_DATA - 1 - pos) - 6;
+ /* now correct the following 10 bits. At most two bytes
+ can be modified since pos is even */
+ index = (pos >> 3) ^ 1;
+ bitpos = pos & 7;
+ if ((index >= 0 && index < SECTOR_SIZE) || index == (SECTOR_SIZE + 1)) {
+ val = (uint8_t) (errval[i] >> (2 + bitpos));
+ parity ^= val;
+ if (index < SECTOR_SIZE)
+ data[index] ^= val;
+ }
+ index = ((pos >> 3) + 1) ^ 1;
+ 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));
+ parity ^= val;
+ if (index < SECTOR_SIZE)
+ data[index] ^= val;
+ }
+ }
+ }
+ /* If the parity is wrong, no rescue possible */
+ return parity ? -1 : nerr;
+}
+
static void DoC_Delay(struct doc_priv *doc, unsigned short cycles)
{
volatile char dummy;
int i;
-
+
for (i = 0; i < cycles; i++) {
if (DoC_is_Millennium(doc))
dummy = ReadDOC(doc->virtadr, NOP);
+ else if (DoC_is_MillenniumPlus(doc))
+ dummy = ReadDOC(doc->virtadr, Mplus_NOP);
else
dummy = ReadDOC(doc->virtadr, DOCStatus);
}
-
+
}
+
+#define CDSN_CTRL_FR_B_MASK (CDSN_CTRL_FR_B0 | CDSN_CTRL_FR_B1)
+
/* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */
static int _DoC_WaitReady(struct doc_priv *doc)
{
- unsigned long docptr = doc->virtadr;
+ 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 */
- while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
- if (time_after(jiffies, timeo)) {
- printk("_DoC_WaitReady timed out.\n");
- return -EIO;
+ if (DoC_is_MillenniumPlus(doc)) {
+ while ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK) {
+ if (time_after(jiffies, timeo)) {
+ printk("_DoC_WaitReady timed out.\n");
+ return -EIO;
+ }
+ udelay(1);
+ cond_resched();
+ }
+ } else {
+ while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
+ if (time_after(jiffies, timeo)) {
+ printk("_DoC_WaitReady timed out.\n");
+ return -EIO;
+ }
+ udelay(1);
+ cond_resched();
}
- udelay(1);
- cond_resched();
}
return 0;
static inline int DoC_WaitReady(struct doc_priv *doc)
{
- unsigned long docptr = doc->virtadr;
+ void __iomem *docptr = doc->virtadr;
int ret = 0;
- DoC_Delay(doc, 4);
+ if (DoC_is_MillenniumPlus(doc)) {
+ DoC_Delay(doc, 4);
- if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B))
- /* Call the out-of-line routine to wait */
- ret = _DoC_WaitReady(doc);
+ if ((ReadDOC(docptr, Mplus_FlashControl) & CDSN_CTRL_FR_B_MASK) != CDSN_CTRL_FR_B_MASK)
+ /* Call the out-of-line routine to wait */
+ ret = _DoC_WaitReady(doc);
+ } else {
+ DoC_Delay(doc, 4);
- DoC_Delay(doc, 2);
- if(debug) printk("DoC_WaitReady OK\n");
+ if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B))
+ /* Call the out-of-line routine to wait */
+ ret = _DoC_WaitReady(doc);
+ DoC_Delay(doc, 2);
+ }
+
+ if (debug)
+ printk("DoC_WaitReady OK\n");
return ret;
}
static void doc2000_write_byte(struct mtd_info *mtd, u_char datum)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ 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);
}
static u_char doc2000_read_byte(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
u_char ret;
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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
- int i;
+ 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);
}
}
-static void doc2000_readbuf_dword(struct mtd_info *mtd,
- u_char *buf, int len)
+static void doc2000_readbuf_dword(struct mtd_info *mtd, u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
- int i;
+ struct doc_priv *doc = this->priv;
+ 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ 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;
static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
+ struct doc_priv *doc = this->priv;
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);
uint32_t dword;
uint8_t byte[4];
} ident;
- unsigned long docptr = doc->virtadr;
+ 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) {
this->read_buf = &doc2000_readbuf_dword;
}
}
-
+
return ret;
}
static void __init doc2000_count_chips(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
+ struct doc_priv *doc = this->priv;
uint16_t mfrid;
int i;
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 = (void *)this->priv;
+ struct doc_priv *doc = this->priv;
int status;
-
+
DoC_WaitReady(doc);
this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
DoC_WaitReady(doc);
static void doc2001_write_byte(struct mtd_info *mtd, u_char datum)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
WriteDOC(datum, docptr, CDSNSlowIO);
WriteDOC(datum, docptr, Mil_CDSN_IO);
static u_char doc2001_read_byte(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
//ReadDOC(docptr, CDSNSlowIO);
/* 11.4.5 -- delay twice to allow extended length cycle */
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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
int i;
/* Start read pipeline */
ReadDOC(docptr, ReadPipeInit);
- for (i=0; i < len-1; i++)
- buf[i] = ReadDOC(docptr, Mil_CDSN_IO);
+ 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
int i;
/* 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;
return 0;
}
-static void doc200x_select_chip(struct mtd_info *mtd, int chip)
+static u_char doc2001plus_read_byte(struct mtd_info *mtd)
+{
+ struct nand_chip *this = mtd->priv;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+ u_char ret;
+
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+ ret = ReadDOC(docptr, Mplus_LastDataRead);
+ if (debug)
+ printk("read_byte returns %02x\n", ret);
+ return ret;
+}
+
+static void doc2001plus_writebuf(struct mtd_info *mtd, const u_char *buf, int len)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ 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++) {
+ WriteDOC_(buf[i], docptr, DoC_Mil_CDSN_IO + i);
+ if (debug && i < 16)
+ printk("%02x ", buf[i]);
+ }
+ if (debug)
+ printk("\n");
+}
+
+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);
+
+ /* Start read pipeline */
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+
+ 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);
+ if (debug && i < 16)
+ 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");
+}
+
+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);
+
+ /* Start read pipeline */
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+ ReadDOC(docptr, Mplus_ReadPipeInit);
+
+ 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;
+ return 0;
+}
+
+static void doc2001plus_select_chip(struct mtd_info *mtd, int chip)
+{
+ struct nand_chip *this = mtd->priv;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
int floor = 0;
- /* 11.4.4 -- deassert CE before changing chip */
- doc200x_hwcontrol(mtd, NAND_CTL_CLRNCE);
+ if (debug)
+ printk("select chip (%d)\n", chip);
- if(debug)printk("select chip (%d)\n", chip);
+ if (chip == -1) {
+ /* Disable flash internally */
+ WriteDOC(0, docptr, Mplus_FlashSelect);
+ return;
+ }
+
+ floor = chip / doc->chips_per_floor;
+ chip -= (floor * doc->chips_per_floor);
+
+ /* Assert ChipEnable and deassert WriteProtect */
+ WriteDOC((DOC_FLASH_CE), docptr, Mplus_FlashSelect);
+ this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+
+ doc->curchip = chip;
+ doc->curfloor = floor;
+}
+
+static void doc200x_select_chip(struct mtd_info *mtd, int chip)
+{
+ struct nand_chip *this = mtd->priv;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+ int floor = 0;
+
+ 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_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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+
+ 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 (cmd != NAND_CMD_NONE) {
+ if (DoC_is_2000(doc))
+ doc2000_write_byte(mtd, cmd);
+ else
+ doc2001_write_byte(mtd, cmd);
+ }
+}
- 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;
+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;
+ void __iomem *docptr = doc->virtadr;
+
+ /*
+ * Must terminate write pipeline before sending any commands
+ * to the device.
+ */
+ if (command == NAND_CMD_PAGEPROG) {
+ WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
+ WriteDOC(0x00, docptr, Mplus_WritePipeTerm);
+ }
+
+ /*
+ * Write out the command to the device.
+ */
+ if (command == NAND_CMD_SEQIN) {
+ int readcmd;
+
+ if (column >= mtd->writesize) {
+ /* OOB area */
+ column -= mtd->writesize;
+ readcmd = NAND_CMD_READOOB;
+ } else if (column < 256) {
+ /* First 256 bytes --> READ0 */
+ readcmd = NAND_CMD_READ0;
+ } else {
+ column -= 256;
+ readcmd = NAND_CMD_READ1;
+ }
+ WriteDOC(readcmd, docptr, Mplus_FlashCmd);
+ }
+ WriteDOC(command, docptr, Mplus_FlashCmd);
+ WriteDOC(0, docptr, Mplus_WritePipeTerm);
+ WriteDOC(0, docptr, Mplus_WritePipeTerm);
+
+ if (column != -1 || page_addr != -1) {
+ /* Serially input address */
+ if (column != -1) {
+ /* Adjust columns for 16 bit buswidth */
+ if (this->options & NAND_BUSWIDTH_16)
+ column >>= 1;
+ 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);
+ /* One more address cycle for higher density devices */
+ if (this->chipsize & 0x0c000000) {
+ 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)
+ WriteDOC(0, docptr, Mplus_FlashControl);
}
- 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);
+
+ /*
+ * program and erase have their own busy handlers
+ * status and sequential in needs no delay
+ */
+ switch (command) {
+
+ case NAND_CMD_PAGEPROG:
+ case NAND_CMD_ERASE1:
+ case NAND_CMD_ERASE2:
+ case NAND_CMD_SEQIN:
+ case NAND_CMD_STATUS:
+ return;
+
+ case NAND_CMD_RESET:
+ if (this->dev_ready)
+ break;
+ udelay(this->chip_delay);
+ WriteDOC(NAND_CMD_STATUS, docptr, Mplus_FlashCmd);
+ WriteDOC(0, docptr, Mplus_WritePipeTerm);
+ WriteDOC(0, docptr, Mplus_WritePipeTerm);
+ while (!(this->read_byte(mtd) & 0x40)) ;
+ return;
+
+ /* This applies to read commands */
+ default:
+ /*
+ * If we don't have access to the busy pin, we apply the given
+ * command delay
+ */
+ if (!this->dev_ready) {
+ udelay(this->chip_delay);
+ return;
+ }
+ }
+
+ /* Apply this short delay always to ensure that we do wait tWB in
+ * any case on any machine. */
+ ndelay(100);
+ /* wait until command is processed */
+ while (!this->dev_ready(mtd)) ;
}
static int doc200x_dev_ready(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
-
- /* 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)
- printk("not ready\n");
- return 0;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+
+ if (DoC_is_MillenniumPlus(doc)) {
+ /* 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)
+ printk("not ready\n");
+ return 0;
+ }
+ 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)
+ 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");
+ return 1;
}
- /* 11.4.2 -- Must NOP twice if it's ready */
- DoC_Delay(doc, 2);
- if (debug)printk("was ready\n");
- return 1;
-}
+}
static int doc200x_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
{
static void doc200x_enable_hwecc(struct mtd_info *mtd, int mode)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ 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);
WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
break;
- }
+ }
+}
+
+static void doc2001plus_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+ struct nand_chip *this = mtd->priv;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+
+ /* Prime the ECC engine */
+ switch (mode) {
+ case NAND_ECC_READ:
+ WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
+ WriteDOC(DOC_ECC_EN, docptr, Mplus_ECCConf);
+ break;
+ case NAND_ECC_WRITE:
+ WriteDOC(DOC_ECC_RESET, docptr, Mplus_ECCConf);
+ WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, Mplus_ECCConf);
+ break;
+ }
}
/* 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
int i;
int emptymatch = 1;
WriteDOC(0, docptr, 2k_CDSN_IO);
WriteDOC(0, docptr, 2k_CDSN_IO);
WriteDOC(doc->CDSNControl, docptr, CDSNControl);
+ } else if (DoC_is_MillenniumPlus(doc)) {
+ WriteDOC(0, docptr, Mplus_NOP);
+ WriteDOC(0, docptr, Mplus_NOP);
+ WriteDOC(0, docptr, Mplus_NOP);
} else {
WriteDOC(0, docptr, NOP);
WriteDOC(0, docptr, NOP);
}
for (i = 0; i < 6; i++) {
- ecc_code[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
+ if (DoC_is_MillenniumPlus(doc))
+ ecc_code[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i);
+ else
+ ecc_code[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
if (ecc_code[i] != empty_write_ecc[i])
emptymatch = 0;
}
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ if (DoC_is_MillenniumPlus(doc))
+ WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
+ else
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
#if 0
/* If emptymatch=1, we might have an all-0xff data buffer. Check. */
if (emptymatch) {
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;
}
/* 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 = (void *)this->priv;
- unsigned long docptr = doc->virtadr;
+ struct doc_priv *doc = this->priv;
+ void __iomem *docptr = doc->virtadr;
+ uint8_t calc_ecc[6];
volatile u_char dummy;
int emptymatch = 1;
-
+
/* flush the pipeline */
if (DoC_is_2000(doc)) {
dummy = ReadDOC(docptr, 2k_ECCStatus);
dummy = ReadDOC(docptr, 2k_ECCStatus);
dummy = ReadDOC(docptr, 2k_ECCStatus);
+ } else if (DoC_is_MillenniumPlus(doc)) {
+ dummy = ReadDOC(docptr, Mplus_ECCConf);
+ dummy = ReadDOC(docptr, Mplus_ECCConf);
+ dummy = ReadDOC(docptr, Mplus_ECCConf);
} else {
dummy = ReadDOC(docptr, ECCConf);
dummy = ReadDOC(docptr, ECCConf);
dummy = ReadDOC(docptr, ECCConf);
}
-
+
/* Error occured ? */
if (dummy & 0x80) {
for (i = 0; i < 6; i++) {
- calc_ecc[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
+ if (DoC_is_MillenniumPlus(doc))
+ calc_ecc[i] = ReadDOC_(docptr, DoC_Mplus_ECCSyndrome0 + i);
+ else
+ calc_ecc[i] = ReadDOC_(docptr, DoC_ECCSyndrome0 + i);
if (calc_ecc[i] != empty_read_syndrome[i])
emptymatch = 0;
}
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;
}
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_decode_ecc (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);
- }
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ }
+ if (DoC_is_MillenniumPlus(doc))
+ WriteDOC(DOC_ECC_DIS, docptr, Mplus_ECCConf);
+ else
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
if (no_ecc_failures && (ret == -1)) {
printk(KERN_ERR "suppressing ECC failure\n");
ret = 0;
}
return ret;
}
-
+
//u_char mydatabuf[528];
-static struct nand_oobinfo doc200x_oobinfo = {
- .useecc = MTD_NANDECC_AUTOPLACE,
- .eccbytes = 6,
- .eccpos = {0, 1, 2, 3, 4, 5},
- .oobfree = { {8, 8} }
+/* 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}, {6, 2}}
};
-
+
/* Find the (I)NFTL Media Header, and optionally also the mirror media header.
On sucessful return, buf will contain a copy of the media header for
further processing. id is the string to scan for, and will presumably be
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 = (void *)this->priv;
- int offs, end = (MAX_MEDIAHEADER_SCAN << this->phys_erase_shift);
- int ret, 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;
+ struct doc_priv *doc = this->priv;
+ unsigned offs;
+ int ret;
+ size_t retlen;
+
+ 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;
/* 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;
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 = (void *)this->priv;
- u_char *buf = this->data_buf;
- struct NFTLMediaHeader *mh = (struct NFTLMediaHeader *) buf;
- const int psize = 1 << this->page_shift;
- int blocks, maxblocks;
+ struct doc_priv *doc = this->priv;
+ int ret = 0;
+ u_char *buf;
+ struct NFTLMediaHeader *mh;
+ const unsigned psize = 1 << this->page_shift;
+ int numparts = 0;
+ unsigned blocks, maxblocks;
int offs, numheaders;
- if (!(numheaders=find_media_headers(mtd, buf, "ANAND", 1))) return 0;
+ 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;
+
+ mh->NumEraseUnits = le16_to_cpu(mh->NumEraseUnits);
+ mh->FirstPhysicalEUN = le16_to_cpu(mh->FirstPhysicalEUN);
+ mh->FormattedSize = le32_to_cpu(mh->FormattedSize);
-//#ifdef CONFIG_MTD_DEBUG_VERBOSE
-// if (CONFIG_MTD_DEBUG_VERBOSE >= 2)
printk(KERN_INFO " DataOrgID = %s\n"
" NumEraseUnits = %d\n"
" FirstPhysicalEUN = %d\n"
mh->DataOrgID, mh->NumEraseUnits,
mh->FirstPhysicalEUN, mh->FormattedSize,
mh->UnitSizeFactor);
-//#endif
blocks = mtd->size >> this->phys_erase_shift;
- maxblocks = min(32768, mtd->erasesize - psize);
+ maxblocks = min(32768U, mtd->erasesize - psize);
if (mh->UnitSizeFactor == 0x00) {
/* 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;
- maxblocks = min(32768, (maxblocks << 1) + psize);
+ maxblocks = min(32768U, (maxblocks << 1) + psize);
mh->UnitSizeFactor--;
}
printk(KERN_WARNING "UnitSizeFactor=0x00 detected. Correct value is assumed to be 0x%02x.\n", mh->UnitSizeFactor);
mtd->erasesize <<= (0xff - mh->UnitSizeFactor);
printk(KERN_INFO "Setting virtual erase size to %d\n", mtd->erasesize);
blocks = mtd->size >> this->bbt_erase_shift;
- maxblocks = min(32768, mtd->erasesize - psize);
+ maxblocks = min(32768U, mtd->erasesize - psize);
}
if (blocks > maxblocks) {
printk(KERN_ERR "UnitSizeFactor of 0x%02x is inconsistent with device size. Aborting.\n", mh->UnitSizeFactor);
- return 0;
+ goto out;
}
/* Skip past the media headers. */
offs <<= this->page_shift;
offs += mtd->erasesize;
- //parts[0].name = " DiskOnChip Boot / Media Header partition";
- //parts[0].offset = 0;
- //parts[0].size = offs;
+ if (show_firmware_partition == 1) {
+ parts[0].name = " DiskOnChip Firmware / Media Header partition";
+ parts[0].offset = 0;
+ parts[0].size = offs;
+ numparts = 1;
+ }
- parts[0].name = " DiskOnChip BDTL partition";
- parts[0].offset = offs;
- parts[0].size = (mh->NumEraseUnits - numheaders) << this->bbt_erase_shift;
+ 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++;
- offs += parts[0].size;
if (offs < mtd->size) {
- parts[1].name = " DiskOnChip Remainder partition";
- parts[1].offset = offs;
- parts[1].size = mtd->size - offs;
- return 2;
+ parts[numparts].name = " DiskOnChip Remainder partition";
+ parts[numparts].offset = offs;
+ parts[numparts].size = mtd->size - offs;
+ numparts++;
}
- return 1;
+
+ 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 = (void *)this->priv;
- u_char *buf = this->data_buf;
- struct INFTLMediaHeader *mh = (struct INFTLMediaHeader *) buf;
+ struct doc_priv *doc = this->priv;
+ int ret = 0;
+ u_char *buf;
+ struct INFTLMediaHeader *mh;
struct INFTLPartition *ip;
int numparts = 0;
int blocks;
if (inftl_bbt_write)
end -= (INFTL_BBT_RESERVED_BLOCKS << this->phys_erase_shift);
- if (!find_media_headers(mtd, buf, "BNAND", 0)) return 0;
+ 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;
doc->mh1_page = doc->mh0_page + (4096 >> this->page_shift);
+ mh = (struct INFTLMediaHeader *)buf;
mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits);
mh->FormatFlags = le32_to_cpu(mh->FormatFlags);
mh->PercentUsed = le32_to_cpu(mh->PercentUsed);
-
-//#ifdef CONFIG_MTD_DEBUG_VERBOSE
-// if (CONFIG_MTD_DEBUG_VERBOSE >= 2)
+
printk(KERN_INFO " bootRecordID = %s\n"
" NoOfBootImageBlocks = %d\n"
" NoOfBinaryPartitions = %d\n"
" NoOfBDTLPartitions = %d\n"
" BlockMultiplerBits = %d\n"
" FormatFlgs = %d\n"
- " OsakVersion = 0x%x\n"
+ " OsakVersion = %d.%d.%d.%d\n"
" PercentUsed = %d\n",
mh->bootRecordID, mh->NoOfBootImageBlocks,
mh->NoOfBinaryPartitions,
mh->NoOfBDTLPartitions,
mh->BlockMultiplierBits, mh->FormatFlags,
- mh->OsakVersion, mh->PercentUsed);
-//#endif
+ ((unsigned char *) &mh->OsakVersion)[0] & 0xf,
+ ((unsigned char *) &mh->OsakVersion)[1] & 0xf,
+ ((unsigned char *) &mh->OsakVersion)[2] & 0xf,
+ ((unsigned char *) &mh->OsakVersion)[3] & 0xf,
+ mh->PercentUsed);
vshift = this->phys_erase_shift + mh->BlockMultiplierBits;
blocks = mtd->size >> vshift;
if (blocks > 32768) {
printk(KERN_ERR "BlockMultiplierBits=%d is inconsistent with device size. Aborting.\n", mh->BlockMultiplierBits);
- return 0;
+ goto out;
}
blocks = doc->chips_per_floor << (this->chip_shift - this->phys_erase_shift);
if (inftl_bbt_write && (blocks > mtd->erasesize)) {
printk(KERN_ERR "Writeable BBTs spanning more than one erase block are not yet supported. FIX ME!\n");
- return 0;
+ goto out;
}
/* Scan the partitions */
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"
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";
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) {
parts[numparts].size = end - parts[numparts].offset;
numparts++;
}
- return numparts;
+ ret = numparts;
+ out:
+ kfree(buf);
+ return ret;
}
static int __init nftl_scan_bbt(struct mtd_info *mtd)
{
int ret, numparts;
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
+ 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;
if ((ret = nand_scan_bbt(mtd, NULL)))
return ret;
add_mtd_device(mtd);
-#if defined(CONFIG_MTD_PARTITIONS) || defined(CONFIG_MTD_PARTITIONS_MODULE)
- if (!no_autopart) add_mtd_partitions(mtd, parts, numparts);
+#ifdef CONFIG_MTD_PARTITIONS
+ if (!no_autopart)
+ add_mtd_partitions(mtd, parts, numparts);
#endif
return 0;
}
{
int ret, numparts;
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->priv;
+ struct doc_priv *doc = this->priv;
struct mtd_partition parts[5];
if (this->numchips > doc->chips_per_floor) {
return -EIO;
}
- if (mtd->size == (8<<20)) {
-#if 0
-/* This doesn't seem to work for me. I get ECC errors on every page. */
- /* The Millennium 8MiB is actually an NFTL device! */
- mtd->name = "DiskOnChip Millennium 8MiB (NFTL)";
- return nftl_scan_bbt(mtd);
-#endif
- printk(KERN_ERR "DiskOnChip Millennium 8MiB is not supported.\n");
- return -EIO;
+ if (DoC_is_MillenniumPlus(doc)) {
+ this->bbt_td->options = NAND_BBT_2BIT | NAND_BBT_ABSPAGE;
+ if (inftl_bbt_write)
+ this->bbt_td->options |= NAND_BBT_WRITE;
+ this->bbt_td->pages[0] = 2;
+ this->bbt_md = NULL;
+ } else {
+ 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;
+ this->bbt_td->len = 8;
+ this->bbt_td->veroffs = 7;
+ this->bbt_td->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
+ 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;
+ if (inftl_bbt_write)
+ this->bbt_md->options |= NAND_BBT_WRITE;
+ this->bbt_md->offs = 8;
+ this->bbt_md->len = 8;
+ this->bbt_md->veroffs = 7;
+ this->bbt_md->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
+ this->bbt_md->reserved_block_code = 0x01;
+ this->bbt_md->pattern = "TBB_SYSM";
}
- 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;
- this->bbt_td->len = 8;
- this->bbt_td->veroffs = 7;
- this->bbt_td->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
- 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;
- if (inftl_bbt_write)
- this->bbt_md->options |= NAND_BBT_WRITE;
- this->bbt_md->offs = 8;
- this->bbt_md->len = 8;
- this->bbt_md->veroffs = 7;
- this->bbt_md->maxblocks = INFTL_BBT_RESERVED_BLOCKS;
- this->bbt_md->reserved_block_code = 0x01;
- this->bbt_md->pattern = "TBB_SYSM";
-
/* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set.
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);
-#if defined(CONFIG_MTD_PARTITIONS) || defined(CONFIG_MTD_PARTITIONS_MODULE)
- if (!no_autopart) add_mtd_partitions(mtd, parts, numparts);
+#ifdef CONFIG_MTD_PARTITIONS
+ if (!no_autopart)
+ add_mtd_partitions(mtd, parts, numparts);
#endif
return 0;
}
static inline int __init doc2000_init(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->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;
static inline int __init doc2001_init(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = (void *)this->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;
this->verify_buf = doc2001_verifybuf;
- this->scan_bbt = inftl_scan_bbt;
ReadDOC(doc->virtadr, ChipID);
ReadDOC(doc->virtadr, ChipID);
ReadDOC(doc->virtadr, ChipID);
if (ReadDOC(doc->virtadr, ChipID) != DOC_ChipID_DocMil) {
/* It's not a Millennium; it's one of the newer
- DiskOnChip 2000 units with a similar ASIC.
+ DiskOnChip 2000 units with a similar ASIC.
Treat it like a Millennium, except that it
can have multiple chips. */
doc2000_count_chips(mtd);
mtd->name = "DiskOnChip 2000 (INFTL Model)";
+ this->scan_bbt = inftl_scan_bbt;
return (4 * doc->chips_per_floor);
} else {
/* Bog-standard Millennium */
doc->chips_per_floor = 1;
mtd->name = "DiskOnChip Millennium";
+ this->scan_bbt = nftl_scan_bbt;
return 1;
}
}
-static inline int __init doc_probe(unsigned long physadr)
+static inline int __init doc2001plus_init(struct mtd_info *mtd)
+{
+ struct nand_chip *this = mtd->priv;
+ struct doc_priv *doc = this->priv;
+
+ 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->cmd_ctrl = NULL;
+ this->select_chip = doc2001plus_select_chip;
+ this->cmdfunc = doc2001plus_command;
+ this->ecc.hwctl = doc2001plus_enable_hwecc;
+
+ doc->chips_per_floor = 1;
+ mtd->name = "DiskOnChip Millennium Plus";
+
+ return 1;
+}
+
+static int __init doc_probe(unsigned long physadr)
{
unsigned char ChipID;
struct mtd_info *mtd;
struct nand_chip *nand;
struct doc_priv *doc;
- unsigned long virtadr;
+ void __iomem *virtadr;
unsigned char save_control;
unsigned char tmp, tmpb, tmpc;
int reg, len, numchips;
int ret = 0;
- virtadr = (unsigned long)ioremap(physadr, DOC_IOREMAP_LEN);
+ virtadr = ioremap(physadr, DOC_IOREMAP_LEN);
if (!virtadr) {
printk(KERN_ERR "Diskonchip ioremap failed: 0x%x bytes at 0x%lx\n", DOC_IOREMAP_LEN, physadr);
return -EIO;
* to the DOCControl register. So we store the current contents
* of the DOCControl register's location, in case we later decide
* that it's not a DiskOnChip, and want to put it back how we
- * found it.
+ * found it.
*/
save_control = ReadDOC(virtadr, DOCControl);
/* Reset the DiskOnChip ASIC */
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
- 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;
case DOC_ChipID_DocMil:
reg = DoC_ECCConf;
break;
+ case DOC_ChipID_DocMilPlus16:
+ case DOC_ChipID_DocMilPlus32:
+ case 0:
+ /* Possible Millennium Plus, need to do more checks */
+ /* Possibly release from power down mode */
+ for (tmp = 0; (tmp < 4); tmp++)
+ ReadDOC(virtadr, Mplus_Power);
+
+ /* Reset the Millennium Plus ASIC */
+ 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;
+ WriteDOC(tmp, virtadr, Mplus_DOCControl);
+ WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
+ mdelay(1);
+
+ ChipID = ReadDOC(virtadr, ChipID);
+
+ switch (ChipID) {
+ case DOC_ChipID_DocMilPlus16:
+ reg = DoC_Mplus_Toggle;
+ break;
+ case DOC_ChipID_DocMilPlus32:
+ printk(KERN_ERR "DiskOnChip Millennium Plus 32MB is not supported, ignoring.\n");
+ default:
+ ret = -ENODEV;
+ goto notfound;
+ }
+ break;
+
default:
ret = -ENODEV;
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)) {
}
for (mtd = doclist; mtd; mtd = doc->nextdoc) {
+ unsigned char oldval;
+ unsigned char newval;
nand = mtd->priv;
- doc = (void *)nand->priv;
+ doc = nand->priv;
/* Use the alias resolution register to determine if this is
in fact the same DOC aliased to a new address. If writes
to one chip's alias resolution register change the value on
the other chip, they're the same chip. */
- unsigned char oldval = ReadDOC(doc->virtadr, AliasResolution);
- unsigned char newval = ReadDOC(virtadr, AliasResolution);
+ if (ChipID == DOC_ChipID_DocMilPlus16) {
+ oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
+ newval = ReadDOC(virtadr, Mplus_AliasResolution);
+ } else {
+ oldval = ReadDOC(doc->virtadr, AliasResolution);
+ newval = ReadDOC(virtadr, AliasResolution);
+ }
if (oldval != newval)
continue;
- WriteDOC(~newval, virtadr, AliasResolution);
- oldval = ReadDOC(doc->virtadr, AliasResolution);
- WriteDOC(newval, virtadr, AliasResolution); // restore it
+ if (ChipID == DOC_ChipID_DocMilPlus16) {
+ WriteDOC(~newval, virtadr, Mplus_AliasResolution);
+ oldval = ReadDOC(doc->virtadr, Mplus_AliasResolution);
+ WriteDOC(newval, virtadr, Mplus_AliasResolution); // restore it
+ } else {
+ WriteDOC(~newval, virtadr, AliasResolution);
+ oldval = ReadDOC(doc->virtadr, AliasResolution);
+ WriteDOC(newval, virtadr, AliasResolution); // restore it
+ }
newval = ~newval;
if (oldval == newval) {
- //printk(KERN_DEBUG "Found alias of DOC at 0x%lx to 0x%lx\n", doc->physadr, physadr);
+ printk(KERN_DEBUG "Found alias of DOC at 0x%lx to 0x%lx\n", doc->physadr, physadr);
goto notfound;
}
}
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);
nand->bbt_td = (struct nand_bbt_descr *) (doc + 1);
nand->bbt_md = nand->bbt_td + 1;
- mtd->priv = (void *) nand;
+ mtd->priv = nand;
mtd->owner = THIS_MODULE;
- nand->priv = (void *) doc;
+ 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->data_buf
- nand->autooob = &doc200x_oobinfo;
- nand->eccmode = NAND_ECC_HW6_512;
- nand->options = NAND_USE_FLASH_BBT | NAND_HWECC_SYNDROME;
+ nand->ecc.hwctl = doc200x_enable_hwecc;
+ nand->ecc.calculate = doc200x_calculate_ecc;
+ nand->ecc.correct = doc200x_correct_data;
+
+ 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;
if (ChipID == DOC_ChipID_Doc2k)
numchips = doc2000_init(mtd);
+ else if (ChipID == DOC_ChipID_DocMilPlus16)
+ numchips = doc2001plus_init(mtd);
else
numchips = doc2001_init(mtd);
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:
- iounmap((void *)virtadr);
+ fail:
+ iounmap(virtadr);
return ret;
}
-int __init init_nanddoc(void)
+static void release_nanddoc(void)
{
- int i;
+ struct mtd_info *mtd, *nextmtd;
+ struct nand_chip *nand;
+ struct doc_priv *doc;
+
+ for (mtd = doclist; mtd; mtd = nextmtd) {
+ nand = mtd->priv;
+ doc = nand->priv;
+
+ nextmtd = doc->nextdoc;
+ nand_release(mtd);
+ iounmap(doc->virtadr);
+ kfree(mtd);
+ }
+}
+
+static int __init init_nanddoc(void)
+{
+ int i, ret = 0;
+
+ /* We could create the decoder on demand, if memory is a concern.
+ * This way we have it handy, if an error happens
+ *
+ * Symbolsize is 10 (bits)
+ * Primitve polynomial is x^10+x^3+1
+ * first consecutive root is 510
+ * primitve element to generate roots = 1
+ * generator polinomial degree = 4
+ */
+ rs_decoder = init_rs(10, 0x409, FCR, 1, NROOTS);
+ if (!rs_decoder) {
+ printk(KERN_ERR "DiskOnChip: Could not create a RS decoder\n");
+ return -ENOMEM;
+ }
if (doc_config_location) {
printk(KERN_INFO "Using configured DiskOnChip probe address 0x%lx\n", doc_config_location);
- return doc_probe(doc_config_location);
+ ret = doc_probe(doc_config_location);
+ 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]);
}
}
found, so the user knows we at least tried. */
if (!doclist) {
printk(KERN_INFO "No valid DiskOnChip devices found\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto outerr;
}
return 0;
+ outerr:
+ free_rs(rs_decoder);
+ return ret;
}
-void __exit cleanup_nanddoc(void)
+static void __exit cleanup_nanddoc(void)
{
- struct mtd_info *mtd, *nextmtd;
- struct nand_chip *nand;
- struct doc_priv *doc;
-
- for (mtd = doclist; mtd; mtd = nextmtd) {
- nand = mtd->priv;
- doc = (void *)nand->priv;
+ /* Cleanup the nand/DoC resources */
+ release_nanddoc();
- nextmtd = doc->nextdoc;
- nand_release(mtd);
- iounmap((void *)doc->virtadr);
- kfree(mtd);
+ /* Free the reed solomon resources */
+ if (rs_decoder) {
+ free_rs(rs_decoder);
}
}
-
+
module_init(init_nanddoc);
module_exit(cleanup_nanddoc);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
-MODULE_DESCRIPTION("M-Systems DiskOnChip 2000 and Millennium device driver\n");
+MODULE_DESCRIPTION("M-Systems DiskOnChip 2000, Millennium and Millennium Plus device driver\n");
git://git.onelab.eu / linux-2.6.git / blobdiff