- Move user-visible bits from headers to include/mtd/ directory.
- Update old DiskOnChip drivers for newer hardware.
- Switch NFTL and INFTL support to work with new DiskOnChip/NAND code.
- New phram driver, reimplenting the ugly slram driver.
- Bug fixes in partitioning code
This is access code for flashes using ARM's flash partitioning
standards.
- $Id: afs.c,v 1.12 2003/06/13 15:31:06 rmk Exp $
+ $Id: afs.c,v 1.13 2004/02/27 22:09:59 rmk Exp $
======================================================================*/
/*
- * $Id: cmdlinepart.c,v 1.9 2003/05/16 17:08:24 dwmw2 Exp $
+ * $Id: cmdlinepart.c,v 1.14 2004/07/12 12:34:23 dwmw2 Exp $
*
* Read flash partition table from command line
*
* mtdparts=<mtddef>[;<mtddef]
* <mtddef> := <mtd-id>:<partdef>[,<partdef>]
* <partdef> := <size>[@offset][<name>][ro]
- * <mtd-id> := unique id used in mapping driver/device
+ * <mtd-id> := unique name used in mapping driver/device (mtd->name)
* <size> := standard linux memsize OR "-" to denote all remaining space
* <name> := '(' NAME ')'
*
return register_mtd_parser(&cmdline_parser);
}
-static void __exit cmdline_parser_exit(void)
-{
- deregister_mtd_parser(&cmdline_parser);
-}
-
module_init(cmdline_parser_init);
-module_exit(cmdline_parser_exit);
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Marius Groeger <mag@sysgo.de>");
# drivers/mtd/maps/Kconfig
-# $Id: Kconfig,v 1.4 2003/05/28 15:18:54 dwmw2 Exp $
+# $Id: Kconfig,v 1.10 2004/07/15 00:34:49 dwmw2 Exp $
menu "Self-contained MTD device drivers"
depends on MTD!=n
depends on MTD && PCI
---help---
This provides a MTD device driver for the Ramix PMC551 RAM PCI card
- from Ramix Inc. <http://www.ramix.com/products/>. These devices come
- in memory configurations from 32M - 1G. If you have one, you
- probably want to enable this.
+ from Ramix Inc. <http://www.ramix.com/products/memory/pmc551.html>.
+ These devices come in memory configurations from 32M - 1G. If you
+ have one, you probably want to enable this.
If this driver is compiled as a module you get the ability to select
the size of the aperture window pointing into the devices memory.
config MTD_MS02NV
tristate "DEC MS02-NV NVRAM module support"
- depends on CONFIG_MACH_DECSTATION
+ depends on MTD && MACH_DECSTATION
help
- Support for NVRAM module on DECstation.
+ This is an MTD driver for the DEC's MS02-NV (54-20948-01) battery
+ backed-up NVRAM module. The module was originally meant as an NFS
+ accelerator. Say Y here if you have a DECstation 5000/2x0 or a
+ DECsystem 5900 equipped with such a module.
config MTD_SLRAM
tristate "Uncached system RAM"
you can still use it for storage or swap by using this driver to
present it to the system as a Memory Technology Device.
+config MTD_PHRAM
+ tristate "Physical system RAM"
+ depends on MTD
+ help
+ This is a re-implementation of the slram driver above.
+
+ Use this driver to access physical memory that the kernel proper
+ doesn't have access to, memory beyond the mem=xxx limit, nvram,
+ memory on the video card, etc...
+
config MTD_LART
tristate "28F160xx flash driver for LART"
depends on SA1100_LART && MTD
config MTD_DOCPROBE
tristate
- default m if MTD_DOC2001!=y && MTD_DOC2000!=y && MTD_DOC2001PLUS!=y && (MTD_DOC2001=m || MTD_DOC2000=m || MOD_DOC2001PLUS=m)
+ default m if MTD_DOC2001!=y && MTD_DOC2000!=y && MTD_DOC2001PLUS!=y && (MTD_DOC2001=m || MTD_DOC2000=m || MTD_DOC2001PLUS=m)
default y if MTD_DOC2001=y || MTD_DOC2000=y || MTD_DOC2001PLUS=y
help
This isn't a real config option, it's derived.
+config MTD_DOCECC
+ tristate
+ default m if MTD_DOCPROBE!=y && MTD_NAND_DISKONCHIP!=y && (MTD_DOCPROBE=m || MTD_NAND_DISKONCHIP=m)
+ default y if MTD_DOCPROBE=y || MTD_NAND_DISKONCHIP=y
+ help
+ This isn't a real config option, it's derived.
+
config MTD_DOCPROBE_ADVANCED
bool "Advanced detection options for DiskOnChip"
depends on MTD_DOCPROBE
#
# linux/drivers/devices/Makefile
#
-# $Id: Makefile.common,v 1.3 2003/05/28 10:54:23 dwmw2 Exp $
+# $Id: Makefile.common,v 1.6 2004/07/12 16:07:30 dwmw2 Exp $
# *** BIG UGLY NOTE ***
#
obj-$(CONFIG_MTD_DOC2000) += doc2000.o
obj-$(CONFIG_MTD_DOC2001) += doc2001.o
obj-$(CONFIG_MTD_DOC2001PLUS) += doc2001plus.o
-obj-$(CONFIG_MTD_DOCPROBE) += docprobe.o docecc.o
+obj-$(CONFIG_MTD_DOCPROBE) += docprobe.o
+obj-$(CONFIG_MTD_DOCECC) += docecc.o
obj-$(CONFIG_MTD_SLRAM) += slram.o
+obj-$(CONFIG_MTD_PHRAM) += phram.o
obj-$(CONFIG_MTD_PMC551) += pmc551.o
obj-$(CONFIG_MTD_MS02NV) += ms02-nv.o
obj-$(CONFIG_MTD_MTDRAM) += mtdram.o
/*
- * $Id: blkmtd-25.c,v 1.5 2003/07/16 06:48:27 spse Exp $
+ * $Id: blkmtd-25.c,v 1.6 2004/07/15 15:09:15 dwmw2 Exp $
*
* blkmtd.c - use a block device as a fake MTD
*
/* Default erase size in K, always make it a multiple of PAGE_SIZE */
#define CONFIG_MTD_BLKDEV_ERASESIZE (128 << 10) /* 128KiB */
-#define VERSION "$Revision: 1.5 $"
+#define VERSION "$Revision: 1.6 $"
/* Info for the block device */
struct blkmtd_dev {
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
*
- * $Id: doc2000.c,v 1.53 2003/06/11 09:45:19 dwmw2 Exp $
+ * $Id: doc2000.c,v 1.60 2004/04/07 08:30:04 gleixner Exp $
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/bitops.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/doc2000.h>
#define DOC_SUPPORT_2000
+#define DOC_SUPPORT_2000TSOP
#define DOC_SUPPORT_MILLENNIUM
#ifdef DOC_SUPPORT_2000
#define DoC_is_2000(doc) (0)
#endif
-#ifdef DOC_SUPPORT_MILLENNIUM
+#if defined(DOC_SUPPORT_2000TSOP) || defined(DOC_SUPPORT_MILLENNIUM)
#define DoC_is_Millennium(doc) (doc->ChipID == DOC_ChipID_DocMil)
#else
#define DoC_is_Millennium(doc) (0)
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused);
+ size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused);
+ size_t *retlen, const u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel);
+static int doc_writev_ecc(struct mtd_info *mtd, const struct iovec *vecs,
+ unsigned long count, loff_t to, size_t *retlen,
+ u_char *eccbuf, struct nand_oobinfo *oobsel);
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
size_t *retlen, u_char *buf);
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
/* Out-of-line routine to wait for chip response */
while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
+ /* issue 2 read from NOP register after reading from CDSNControl register
+ see Software Requirement 11.4 item 2. */
+ DoC_Delay(doc, 2);
+
if (time_after(jiffies, timeo)) {
DEBUG(MTD_DEBUG_LEVEL2, "_DoC_WaitReady timed out.\n");
return -EIO;
/* Send the command */
WriteDOC_(command, docptr, doc->ioreg);
+ if (DoC_is_Millennium(doc))
+ WriteDOC(command, docptr, WritePipeTerm);
/* Lower the CLE line */
WriteDOC(xtraflags | CDSN_CTRL_CE, docptr, CDSNControl);
}
}
+ if (DoC_is_Millennium(doc))
+ WriteDOC(ofs & 0xff, docptr, WritePipeTerm);
+
DoC_Delay(doc, 2); /* Needed for some slow flash chips. mf. */
/* FIXME: The SlowIO's for millennium could be replaced by
/* Read the manufacturer and device id codes from the device */
- /* CDSN Slow IO register see Software Requirement 11.4 item 5. */
- dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
- DoC_Delay(doc, 2);
- mfr = ReadDOC_(doc->virtadr, doc->ioreg);
+ if (DoC_is_Millennium(doc)) {
+ DoC_Delay(doc, 2);
+ dummy = ReadDOC(doc->virtadr, ReadPipeInit);
+ mfr = ReadDOC(doc->virtadr, LastDataRead);
- /* CDSN Slow IO register see Software Requirement 11.4 item 5. */
- dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
- DoC_Delay(doc, 2);
- id = ReadDOC_(doc->virtadr, doc->ioreg);
+ DoC_Delay(doc, 2);
+ dummy = ReadDOC(doc->virtadr, ReadPipeInit);
+ id = ReadDOC(doc->virtadr, LastDataRead);
+ } else {
+ /* CDSN Slow IO register see Software Req 11.4 item 5. */
+ dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
+ DoC_Delay(doc, 2);
+ mfr = ReadDOC_(doc->virtadr, doc->ioreg);
+
+ /* CDSN Slow IO register see Software Req 11.4 item 5. */
+ dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
+ DoC_Delay(doc, 2);
+ id = ReadDOC_(doc->virtadr, doc->ioreg);
+ }
/* No response - return failure */
if (mfr == 0xff || mfr == 0)
if (!doc->mfr) {
doc->mfr = mfr;
doc->id = id;
- doc->chipshift =
- nand_flash_ids[i].chipshift;
- doc->page256 = nand_flash_ids[i].page256;
- doc->pageadrlen =
- nand_flash_ids[i].chipshift > 25 ? 3 : 2;
+ doc->chipshift =
+ ffs((nand_flash_ids[i].chipsize << 20)) - 1;
+ doc->page256 = (nand_flash_ids[i].pagesize == 256) ? 1 : 0;
+ doc->pageadrlen = doc->chipshift > 25 ? 3 : 2;
doc->erasesize =
nand_flash_ids[i].erasesize;
return 1;
/* DoC_ScanChips: Find all NAND chips present in a DiskOnChip, and identify them */
-static void DoC_ScanChips(struct DiskOnChip *this)
+static void DoC_ScanChips(struct DiskOnChip *this, int maxchips)
{
int floor, chip;
int numchips[MAX_FLOORS];
- int maxchips = MAX_CHIPS;
int ret = 1;
this->numchips = 0;
this->mfr = 0;
this->id = 0;
- if (DoC_is_Millennium(this))
- maxchips = MAX_CHIPS_MIL;
-
/* For each floor, find the number of valid chips it contains */
for (floor = 0; floor < MAX_FLOORS; floor++) {
ret = 1;
{
struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv;
struct DiskOnChip *old = NULL;
+ int maxchips;
/* We must avoid being called twice for the same device. */
switch (this->ChipID) {
+ case DOC_ChipID_Doc2kTSOP:
+ mtd->name = "DiskOnChip 2000 TSOP";
+ this->ioreg = DoC_Mil_CDSN_IO;
+ /* Pretend it's a Millennium */
+ this->ChipID = DOC_ChipID_DocMil;
+ maxchips = MAX_CHIPS;
+ break;
case DOC_ChipID_Doc2k:
mtd->name = "DiskOnChip 2000";
this->ioreg = DoC_2k_CDSN_IO;
+ maxchips = MAX_CHIPS;
break;
case DOC_ChipID_DocMil:
mtd->name = "DiskOnChip Millennium";
this->ioreg = DoC_Mil_CDSN_IO;
+ maxchips = MAX_CHIPS_MIL;
break;
+ default:
+ printk("Unknown ChipID 0x%02x\n", this->ChipID);
+ kfree(mtd);
+ iounmap((void *) this->virtadr);
+ return;
}
printk(KERN_NOTICE "%s found at address 0x%lX\n", mtd->name,
mtd->write = doc_write;
mtd->read_ecc = doc_read_ecc;
mtd->write_ecc = doc_write_ecc;
+ mtd->writev_ecc = doc_writev_ecc;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->sync = NULL;
init_MUTEX(&this->lock);
/* Ident all the chips present. */
- DoC_ScanChips(this);
+ DoC_ScanChips(this, maxchips);
if (!this->totlen) {
kfree(mtd);
size_t * retlen, u_char * buf)
{
/* Just a special case of doc_read_ecc */
- return doc_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
+ return doc_read_ecc(mtd, from, len, retlen, buf, NULL, 0);
}
static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * eccbuf,
- struct nand_oobinfo *unused)
+ size_t * retlen, u_char * buf, u_char * eccbuf, struct nand_oobinfo *oobsel)
{
struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv;
unsigned long docptr;
unsigned char syndrome[6];
volatile char dummy;
int i, len256 = 0, ret=0;
+ size_t left = len;
docptr = this->virtadr;
down(&this->lock);
- /* Don't allow a single read to cross a 512-byte block boundary */
- if (from + len > ((from | 0x1ff) + 1))
- len = ((from | 0x1ff) + 1) - from;
-
- /* The ECC will not be calculated correctly if less than 512 is read */
- if (len != 0x200 && eccbuf)
- printk(KERN_WARNING
- "ECC needs a full sector read (adr: %lx size %lx)\n",
- (long) from, (long) len);
-
- /* printk("DoC_Read (adr: %lx size %lx)\n", (long) from, (long) len); */
+ *retlen = 0;
+ while (left) {
+ len = left;
+ /* Don't allow a single read to cross a 512-byte block boundary */
+ if (from + len > ((from | 0x1ff) + 1))
+ len = ((from | 0x1ff) + 1) - from;
- /* Find the chip which is to be used and select it */
- mychip = &this->chips[from >> (this->chipshift)];
+ /* The ECC will not be calculated correctly if less than 512 is read */
+ if (len != 0x200 && eccbuf)
+ printk(KERN_WARNING
+ "ECC needs a full sector read (adr: %lx size %lx)\n",
+ (long) from, (long) len);
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
+ /* printk("DoC_Read (adr: %lx size %lx)\n", (long) from, (long) len); */
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
- DoC_Command(this,
- (!this->page256
- && (from & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
- CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, from, CDSN_CTRL_WP,
- CDSN_CTRL_ECC_IO);
-
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
+ /* Find the chip which is to be used and select it */
+ mychip = &this->chips[from >> (this->chipshift)];
- /* treat crossing 256-byte sector for 2M x 8bits devices */
- if (this->page256 && from + len > (from | 0xff) + 1) {
- len256 = (from | 0xff) + 1 - from;
- DoC_ReadBuf(this, buf, len256);
+ if (this->curfloor != mychip->floor) {
+ DoC_SelectFloor(this, mychip->floor);
+ DoC_SelectChip(this, mychip->chip);
+ } else if (this->curchip != mychip->chip) {
+ DoC_SelectChip(this, mychip->chip);
+ }
- DoC_Command(this, NAND_CMD_READ0, CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, from + len256,
- CDSN_CTRL_WP, CDSN_CTRL_ECC_IO);
- }
+ this->curfloor = mychip->floor;
+ this->curchip = mychip->chip;
- DoC_ReadBuf(this, &buf[len256], len - len256);
+ DoC_Command(this,
+ (!this->page256
+ && (from & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
+ CDSN_CTRL_WP);
+ DoC_Address(this, ADDR_COLUMN_PAGE, from, CDSN_CTRL_WP,
+ CDSN_CTRL_ECC_IO);
- /* Let the caller know we completed it */
- *retlen = len;
+ if (eccbuf) {
+ /* Prime the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_EN, docptr, ECCConf);
+ } else {
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ }
- if (eccbuf) {
- /* Read the ECC data through the DiskOnChip ECC logic */
- /* Note: this will work even with 2M x 8bit devices as */
- /* they have 8 bytes of OOB per 256 page. mf. */
- DoC_ReadBuf(this, eccbuf, 6);
+ /* treat crossing 256-byte sector for 2M x 8bits devices */
+ if (this->page256 && from + len > (from | 0xff) + 1) {
+ len256 = (from | 0xff) + 1 - from;
+ DoC_ReadBuf(this, buf, len256);
- /* Flush the pipeline */
- if (DoC_is_Millennium(this)) {
- dummy = ReadDOC(docptr, ECCConf);
- dummy = ReadDOC(docptr, ECCConf);
- i = ReadDOC(docptr, ECCConf);
- } else {
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- i = ReadDOC(docptr, 2k_ECCStatus);
+ DoC_Command(this, NAND_CMD_READ0, CDSN_CTRL_WP);
+ DoC_Address(this, ADDR_COLUMN_PAGE, from + len256,
+ CDSN_CTRL_WP, CDSN_CTRL_ECC_IO);
}
- /* Check the ECC Status */
- if (i & 0x80) {
- int nb_errors;
- /* There was an ECC error */
+ DoC_ReadBuf(this, &buf[len256], len - len256);
+
+ /* Let the caller know we completed it */
+ *retlen += len;
+
+ if (eccbuf) {
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ /* Note: this will work even with 2M x 8bit devices as */
+ /* they have 8 bytes of OOB per 256 page. mf. */
+ DoC_ReadBuf(this, eccbuf, 6);
+
+ /* Flush the pipeline */
+ if (DoC_is_Millennium(this)) {
+ dummy = ReadDOC(docptr, ECCConf);
+ dummy = ReadDOC(docptr, ECCConf);
+ i = ReadDOC(docptr, ECCConf);
+ } else {
+ dummy = ReadDOC(docptr, 2k_ECCStatus);
+ dummy = ReadDOC(docptr, 2k_ECCStatus);
+ i = ReadDOC(docptr, 2k_ECCStatus);
+ }
+
+ /* Check the ECC Status */
+ if (i & 0x80) {
+ int nb_errors;
+ /* There was an ECC error */
#ifdef ECC_DEBUG
- printk(KERN_ERR "DiskOnChip ECC Error: Read at %lx\n", (long)from);
+ printk(KERN_ERR "DiskOnChip ECC Error: Read at %lx\n", (long)from);
#endif
- /* Read the ECC syndrom through the DiskOnChip ECC logic.
- These syndrome will be all ZERO when there is no error */
- for (i = 0; i < 6; i++) {
- syndrome[i] =
- ReadDOC(docptr, ECCSyndrome0 + i);
- }
- nb_errors = doc_decode_ecc(buf, syndrome);
+ /* Read the ECC syndrom through the DiskOnChip ECC logic.
+ These syndrome will be all ZERO when there is no error */
+ for (i = 0; i < 6; i++) {
+ syndrome[i] =
+ ReadDOC(docptr, ECCSyndrome0 + i);
+ }
+ nb_errors = doc_decode_ecc(buf, syndrome);
#ifdef ECC_DEBUG
- printk(KERN_ERR "Errors corrected: %x\n", nb_errors);
+ printk(KERN_ERR "Errors corrected: %x\n", nb_errors);
#endif
- if (nb_errors < 0) {
- /* We return error, but have actually done the read. Not that
- this can be told to user-space, via sys_read(), but at least
- MTD-aware stuff can know about it by checking *retlen */
- ret = -EIO;
- }
- }
+ if (nb_errors < 0) {
+ /* We return error, but have actually done the read. Not that
+ this can be told to user-space, via sys_read(), but at least
+ MTD-aware stuff can know about it by checking *retlen */
+ ret = -EIO;
+ }
+ }
#ifdef PSYCHO_DEBUG
- printk(KERN_DEBUG "ECC DATA at %lxB: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long)from, eccbuf[0], eccbuf[1], eccbuf[2],
- eccbuf[3], eccbuf[4], eccbuf[5]);
+ printk(KERN_DEBUG "ECC DATA at %lxB: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long)from, eccbuf[0], eccbuf[1], eccbuf[2],
+ eccbuf[3], eccbuf[4], eccbuf[5]);
#endif
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
- }
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
+ }
- /* according to 11.4.1, we need to wait for the busy line
- * drop if we read to the end of the page. */
- if(0 == ((from + *retlen) & 0x1ff))
- {
- DoC_WaitReady(this);
+ /* according to 11.4.1, we need to wait for the busy line
+ * drop if we read to the end of the page. */
+ if(0 == ((from + len) & 0x1ff))
+ {
+ DoC_WaitReady(this);
+ }
+
+ from += len;
+ left -= len;
+ buf += len;
}
up(&this->lock);
size_t * retlen, const u_char * buf)
{
char eccbuf[6];
- return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, NULL);
+ return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, 0);
}
static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
size_t * retlen, const u_char * buf,
- u_char * eccbuf,
- struct nand_oobinfo *unused)
+ u_char * eccbuf, struct nand_oobinfo *oobsel)
{
struct DiskOnChip *this = (struct DiskOnChip *) mtd->priv;
int di; /* Yes, DI is a hangover from when I was disassembling the binary driver */
volatile char dummy;
int len256 = 0;
struct Nand *mychip;
+ size_t left = len;
+ int status;
docptr = this->virtadr;
down(&this->lock);
- /* Don't allow a single write to cross a 512-byte block boundary */
- if (to + len > ((to | 0x1ff) + 1))
- len = ((to | 0x1ff) + 1) - to;
+ *retlen = 0;
+ while (left) {
+ len = left;
- /* The ECC will not be calculated correctly if less than 512 is written */
- if (len != 0x200 && eccbuf)
- printk(KERN_WARNING
- "ECC needs a full sector write (adr: %lx size %lx)\n",
- (long) to, (long) len);
+ /* Don't allow a single write to cross a 512-byte block boundary */
+ if (to + len > ((to | 0x1ff) + 1))
+ len = ((to | 0x1ff) + 1) - to;
- /* printk("DoC_Write (adr: %lx size %lx)\n", (long) to, (long) len); */
+ /* The ECC will not be calculated correctly if less than 512 is written */
+/* DBB-
+ if (len != 0x200 && eccbuf)
+ printk(KERN_WARNING
+ "ECC needs a full sector write (adr: %lx size %lx)\n",
+ (long) to, (long) len);
+ -DBB */
- /* Find the chip which is to be used and select it */
- mychip = &this->chips[to >> (this->chipshift)];
+ /* printk("DoC_Write (adr: %lx size %lx)\n", (long) to, (long) len); */
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
+ /* Find the chip which is to be used and select it */
+ mychip = &this->chips[to >> (this->chipshift)];
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
+ if (this->curfloor != mychip->floor) {
+ DoC_SelectFloor(this, mychip->floor);
+ DoC_SelectChip(this, mychip->chip);
+ } else if (this->curchip != mychip->chip) {
+ DoC_SelectChip(this, mychip->chip);
+ }
- /* Set device to main plane of flash */
- DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP);
- DoC_Command(this,
- (!this->page256
- && (to & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
- CDSN_CTRL_WP);
+ this->curfloor = mychip->floor;
+ this->curchip = mychip->chip;
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, to, 0, CDSN_CTRL_ECC_IO);
+ /* Set device to main plane of flash */
+ DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP);
+ DoC_Command(this,
+ (!this->page256
+ && (to & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
+ CDSN_CTRL_WP);
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
+ DoC_Command(this, NAND_CMD_SEQIN, 0);
+ DoC_Address(this, ADDR_COLUMN_PAGE, to, 0, CDSN_CTRL_ECC_IO);
- /* treat crossing 256-byte sector for 2M x 8bits devices */
- if (this->page256 && to + len > (to | 0xff) + 1) {
- len256 = (to | 0xff) + 1 - to;
- DoC_WriteBuf(this, buf, len256);
+ if (eccbuf) {
+ /* Prime the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
+ } else {
+ /* disable the ECC engine */
+ WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ }
+
+ /* treat crossing 256-byte sector for 2M x 8bits devices */
+ if (this->page256 && to + len > (to | 0xff) + 1) {
+ len256 = (to | 0xff) + 1 - to;
+ DoC_WriteBuf(this, buf, len256);
+
+ DoC_Command(this, NAND_CMD_PAGEPROG, 0);
+
+ DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
+ /* There's an implicit DoC_WaitReady() in DoC_Command */
+
+ dummy = ReadDOC(docptr, CDSNSlowIO);
+ DoC_Delay(this, 2);
+
+ if (ReadDOC_(docptr, this->ioreg) & 1) {
+ printk(KERN_ERR "Error programming flash\n");
+ /* Error in programming */
+ *retlen = 0;
+ up(&this->lock);
+ return -EIO;
+ }
+
+ DoC_Command(this, NAND_CMD_SEQIN, 0);
+ DoC_Address(this, ADDR_COLUMN_PAGE, to + len256, 0,
+ CDSN_CTRL_ECC_IO);
+ }
+
+ DoC_WriteBuf(this, &buf[len256], len - len256);
+
+ if (eccbuf) {
+ WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr,
+ CDSNControl);
+
+ if (DoC_is_Millennium(this)) {
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
+ WriteDOC(0, docptr, NOP);
+ } else {
+ WriteDOC_(0, docptr, this->ioreg);
+ WriteDOC_(0, docptr, this->ioreg);
+ WriteDOC_(0, docptr, this->ioreg);
+ }
+
+ WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_FLASH_IO | CDSN_CTRL_CE, docptr,
+ CDSNControl);
+
+ /* Read the ECC data through the DiskOnChip ECC logic */
+ for (di = 0; di < 6; di++) {
+ eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di);
+ }
+
+ /* Reset the ECC engine */
+ WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+
+#ifdef PSYCHO_DEBUG
+ printk
+ ("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
+ (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
+ eccbuf[4], eccbuf[5]);
+#endif
+ }
DoC_Command(this, NAND_CMD_PAGEPROG, 0);
DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
/* There's an implicit DoC_WaitReady() in DoC_Command */
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
+ if (DoC_is_Millennium(this)) {
+ ReadDOC(docptr, ReadPipeInit);
+ status = ReadDOC(docptr, LastDataRead);
+ } else {
+ dummy = ReadDOC(docptr, CDSNSlowIO);
+ DoC_Delay(this, 2);
+ status = ReadDOC_(docptr, this->ioreg);
+ }
- if (ReadDOC_(docptr, this->ioreg) & 1) {
+ if (status & 1) {
printk(KERN_ERR "Error programming flash\n");
/* Error in programming */
*retlen = 0;
return -EIO;
}
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, to + len256, 0,
- CDSN_CTRL_ECC_IO);
+ /* Let the caller know we completed it */
+ *retlen += len;
+
+ if (eccbuf) {
+ unsigned char x[8];
+ size_t dummy;
+ int ret;
+
+ /* Write the ECC data to flash */
+ for (di=0; di<6; di++)
+ x[di] = eccbuf[di];
+
+ x[6]=0x55;
+ x[7]=0x55;
+
+ ret = doc_write_oob_nolock(mtd, to, 8, &dummy, x);
+ if (ret) {
+ up(&this->lock);
+ return ret;
+ }
+ }
+
+ to += len;
+ left -= len;
+ buf += len;
}
- DoC_WriteBuf(this, &buf[len256], len - len256);
+ up(&this->lock);
+ return 0;
+}
- if (eccbuf) {
- WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr,
- CDSNControl);
+static int doc_writev_ecc(struct mtd_info *mtd, const struct iovec *vecs,
+ unsigned long count, loff_t to, size_t *retlen,
+ u_char *eccbuf, struct nand_oobinfo *oobsel)
+{
+ static char static_buf[512];
+ static DECLARE_MUTEX(writev_buf_sem);
- if (DoC_is_Millennium(this)) {
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- } else {
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- }
+ size_t totretlen = 0;
+ size_t thisvecofs = 0;
+ int ret= 0;
- /* Read the ECC data through the DiskOnChip ECC logic */
- for (di = 0; di < 6; di++) {
- eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di);
- }
+ down(&writev_buf_sem);
- /* Reset the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
+ while(count) {
+ size_t thislen, thisretlen;
+ unsigned char *buf;
-#ifdef PSYCHO_DEBUG
- printk
- ("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
-#endif
- }
+ buf = vecs->iov_base + thisvecofs;
+ thislen = vecs->iov_len - thisvecofs;
- DoC_Command(this, NAND_CMD_PAGEPROG, 0);
- DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
- /* There's an implicit DoC_WaitReady() in DoC_Command */
+ if (thislen >= 512) {
+ thislen = thislen & ~(512-1);
+ thisvecofs += thislen;
+ } else {
+ /* Not enough to fill a page. Copy into buf */
+ memcpy(static_buf, buf, thislen);
+ buf = &static_buf[thislen];
+
+ while(count && thislen < 512) {
+ vecs++;
+ count--;
+ thisvecofs = min((512-thislen), vecs->iov_len);
+ memcpy(buf, vecs->iov_base, thisvecofs);
+ thislen += thisvecofs;
+ buf += thisvecofs;
+ }
+ buf = static_buf;
+ }
+ if (count && thisvecofs == vecs->iov_len) {
+ thisvecofs = 0;
+ vecs++;
+ count--;
+ }
+ ret = doc_write_ecc(mtd, to, thislen, &thisretlen, buf, eccbuf, oobsel);
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
+ totretlen += thisretlen;
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- printk(KERN_ERR "Error programming flash\n");
- /* Error in programming */
- *retlen = 0;
- up(&this->lock);
- return -EIO;
- }
+ if (ret || thisretlen != thislen)
+ break;
- /* Let the caller know we completed it */
- *retlen = len;
-
- if (eccbuf) {
- unsigned char x[8];
- size_t dummy;
- int ret;
-
- /* Write the ECC data to flash */
- for (di=0; di<6; di++)
- x[di] = eccbuf[di];
-
- x[6]=0x55;
- x[7]=0x55;
-
- ret = doc_write_oob_nolock(mtd, to, 8, &dummy, x);
- up(&this->lock);
- return ret;
- }
- up(&this->lock);
- return 0;
+ to += thislen;
+ }
+
+ up(&writev_buf_sem);
+ *retlen = totretlen;
+ return ret;
}
+
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
size_t * retlen, u_char * buf)
{
unsigned long docptr = this->virtadr;
struct Nand *mychip = &this->chips[ofs >> this->chipshift];
volatile int dummy;
+ int status;
// printk("doc_write_oob(%lx, %d): %2.2X %2.2X %2.2X %2.2X ... %2.2X %2.2X .. %2.2X %2.2X\n",(long)ofs, len,
// buf[0], buf[1], buf[2], buf[3], buf[8], buf[9], buf[14],buf[15]);
DoC_Command(this, NAND_CMD_STATUS, 0);
/* DoC_WaitReady() is implicit in DoC_Command */
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
+ if (DoC_is_Millennium(this)) {
+ ReadDOC(docptr, ReadPipeInit);
+ status = ReadDOC(docptr, LastDataRead);
+ } else {
+ dummy = ReadDOC(docptr, CDSNSlowIO);
+ DoC_Delay(this, 2);
+ status = ReadDOC_(docptr, this->ioreg);
+ }
- if (ReadDOC_(docptr, this->ioreg) & 1) {
+ if (status & 1) {
printk(KERN_ERR "Error programming oob data\n");
/* There was an error */
*retlen = 0;
DoC_Command(this, NAND_CMD_STATUS, 0);
/* DoC_WaitReady() is implicit in DoC_Command */
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
+ if (DoC_is_Millennium(this)) {
+ ReadDOC(docptr, ReadPipeInit);
+ status = ReadDOC(docptr, LastDataRead);
+ } else {
+ dummy = ReadDOC(docptr, CDSNSlowIO);
+ DoC_Delay(this, 2);
+ status = ReadDOC_(docptr, this->ioreg);
+ }
- if (ReadDOC_(docptr, this->ioreg) & 1) {
+ if (status & 1) {
printk(KERN_ERR "Error programming oob data\n");
/* There was an error */
*retlen = 0;
volatile int dummy;
unsigned long docptr;
struct Nand *mychip;
+ int status;
down(&this->lock);
DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
+ if (DoC_is_Millennium(this)) {
+ ReadDOC(docptr, ReadPipeInit);
+ status = ReadDOC(docptr, LastDataRead);
+ } else {
+ dummy = ReadDOC(docptr, CDSNSlowIO);
+ DoC_Delay(this, 2);
+ status = ReadDOC_(docptr, this->ioreg);
+ }
+
+ if (status & 1) {
printk(KERN_ERR "Error erasing at 0x%x\n", ofs);
/* There was an error */
instr->state = MTD_ERASE_FAILED;
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
*
- * $Id: doc2001.c,v 1.41 2003/06/11 09:45:19 dwmw2 Exp $
+ * $Id: doc2001.c,v 1.42 2004/04/04 12:36:45 gleixner Exp $
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/bitops.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
static int doc_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused);
+ size_t *retlen, u_char *buf, u_char *eccbuf, int oobsel);
static int doc_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused);
-
+ size_t *retlen, const u_char *buf, u_char *eccbuf, int oobsel);
static int doc_read_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
size_t *retlen, u_char *buf);
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, size_t len,
mfr, id, nand_manuf_ids[j].name, nand_flash_ids[i].name);
doc->mfr = mfr;
doc->id = id;
- doc->chipshift = nand_flash_ids[i].chipshift;
+ doc->chipshift = ffs((nand_flash_ids[i].chipsize << 20)) - 1;
break;
}
}
size_t *retlen, u_char *buf)
{
/* Just a special case of doc_read_ecc */
- return doc_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
+ return doc_read_ecc(mtd, from, len, retlen, buf, NULL, 0);
}
static int doc_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused)
+ size_t *retlen, u_char *buf, u_char *eccbuf, int oobsel)
{
int i, ret;
volatile char dummy;
size_t *retlen, const u_char *buf)
{
char eccbuf[6];
- return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, NULL);
+ return doc_write_ecc(mtd, to, len, retlen, buf, eccbuf, 0);
}
static int doc_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
- size_t *retlen, const u_char *buf, u_char *eccbuf,
- struct nand_oobinfo *unused)
+ size_t *retlen, const u_char *buf, u_char *eccbuf, int oobsel)
{
int i,ret = 0;
volatile char dummy;
* (c) 1999 Machine Vision Holdings, Inc.
* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
*
- * $Id: doc2001plus.c,v 1.5 2003/06/11 09:45:19 dwmw2 Exp $
+ * $Id: doc2001plus.c,v 1.8 2004/04/04 12:36:45 gleixner Exp $
+ *
+ * Released under GPL
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/bitops.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
* | Data 0 | ECC 0 |Flags0 |Flags1 | Data 1 |ECC 1 | OOB 1 + 2 |
* +-----------+-------+-------+-------+--------------+---------+-----------+
*/
+/* FIXME: This lives in INFTL not here. Other users of flash devices
+ may not want it */
static unsigned int DoC_GetDataOffset(struct mtd_info *mtd, loff_t *from)
{
- unsigned int ofs = *from & 0x3ff;
- unsigned int cmd;
+ struct DiskOnChip *this = (struct DiskOnChip *)mtd->priv;
- if (ofs < 512) {
- cmd = NAND_CMD_READ0;
- ofs &= 0x1ff;
- } else if (ofs < 1014) {
- cmd = NAND_CMD_READ1;
- ofs = (ofs & 0x1ff) + 10;
+ if (this->interleave) {
+ unsigned int ofs = *from & 0x3ff;
+ unsigned int cmd;
+
+ if (ofs < 512) {
+ cmd = NAND_CMD_READ0;
+ ofs &= 0x1ff;
+ } else if (ofs < 1014) {
+ cmd = NAND_CMD_READ1;
+ ofs = (ofs & 0x1ff) + 10;
+ } else {
+ cmd = NAND_CMD_READOOB;
+ ofs = ofs - 1014;
+ }
+
+ *from = (*from & ~0x3ff) | ofs;
+ return cmd;
} else {
- cmd = NAND_CMD_READOOB;
- ofs = ofs - 1014;
+ /* No interleave */
+ if ((*from) & 0x100)
+ return NAND_CMD_READ1;
+ return NAND_CMD_READ0;
}
-
- *from = (*from & ~0x3ff) | ofs;
- return cmd;
}
static unsigned int DoC_GetECCOffset(struct mtd_info *mtd, loff_t *from)
dummy = ReadDOC(docptr, Mplus_ReadPipeInit);
mfr = ReadDOC(docptr, Mil_CDSN_IO);
- dummy = ReadDOC(docptr, Mil_CDSN_IO); /* 2 way interleave */
+ if (doc->interleave)
+ dummy = ReadDOC(docptr, Mil_CDSN_IO); /* 2 way interleave */
id = ReadDOC(docptr, Mil_CDSN_IO);
- dummy = ReadDOC(docptr, Mil_CDSN_IO); /* 2 way interleave */
+ if (doc->interleave)
+ dummy = ReadDOC(docptr, Mil_CDSN_IO); /* 2 way interleave */
dummy = ReadDOC(docptr, Mplus_LastDataRead);
dummy = ReadDOC(docptr, Mplus_LastDataRead);
nand_manuf_ids[j].name, nand_flash_ids[i].name);
doc->mfr = mfr;
doc->id = id;
- doc->interleave = 0;
- if (doc->ChipID == DOC_ChipID_DocMilPlus32)
- doc->interleave = 1;
- doc->chipshift = nand_flash_ids[i].chipshift;
+ doc->chipshift = ffs((nand_flash_ids[i].chipsize << 20)) - 1;
doc->erasesize = nand_flash_ids[i].erasesize << doc->interleave;
break;
}
this->mfr = 0;
this->id = 0;
+ /* Work out the intended interleave setting */
+ this->interleave = 0;
+ if (this->ChipID == DOC_ChipID_DocMilPlus32)
+ this->interleave = 1;
+
+ /* Check the ASIC agrees */
+ if ( (this->interleave << 2) !=
+ (ReadDOC(this->virtadr, Mplus_Configuration) & 4)) {
+ u_char conf = ReadDOC(this->virtadr, Mplus_Configuration);
+ printk(KERN_NOTICE "Setting DiskOnChip Millennium Plus interleave to %s\n",
+ this->interleave?"on (16-bit)":"off (8-bit)");
+ conf ^= 4;
+ WriteDOC(this->virtadr, conf, Mplus_Configuration);
+ }
+
/* For each floor, find the number of valid chips it contains */
for (floor = 0,ret = 1; floor < MAX_FLOORS_MPLUS; floor++) {
numchips[floor] = 0;
return -EINVAL;
/* Determine position of OOB flags, before or after data */
- before = to & 0x200;
+ before = (this->interleave && (to & 0x200));
DoC_CheckASIC(docptr);
/* Figure out which region we are accessing... */
fofs = ofs;
base = ofs & 0xf;
- if (base < 6) {
+ if (!this->interleave) {
+ DoC_Command(docptr, NAND_CMD_READOOB, 0);
+ size = 16 - base;
+ } else if (base < 6) {
DoC_Command(docptr, DoC_GetECCOffset(mtd, &fofs), 0);
size = 6 - base;
} else if (base < 8) {
/* Figure out which region we are accessing... */
fofs = ofs;
base = ofs & 0x0f;
- if (base < 6) {
+ if (!this->interleave) {
+ WriteDOC(NAND_CMD_READOOB, docptr, Mplus_FlashCmd);
+ size = 16 - base;
+ } else if (base < 6) {
WriteDOC(DoC_GetECCOffset(mtd, &fofs), docptr, Mplus_FlashCmd);
size = 6 - base;
} else if (base < 8) {
/* (C) 1999 Machine Vision Holdings, Inc. */
/* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> */
-/* $Id: docprobe.c,v 1.36 2003/05/23 11:29:34 dwmw2 Exp $ */
+/* $Id: docprobe.c,v 1.41 2003/12/03 10:19:57 dwmw2 Exp $ */
window, DOCControl);
#endif /* !DOC_PASSIVE_PROBE */
+ /* We need to read the ChipID register four times. For some
+ newer DiskOnChip 2000 units, the first three reads will
+ return the DiskOnChip Millennium ident. Don't ask. */
ChipID = ReadDOC(window, ChipID);
switch (ChipID) {
break;
case DOC_ChipID_DocMil:
+ /* Check for the new 2000 with Millennium ASIC */
+ ReadDOC(window, ChipID);
+ ReadDOC(window, ChipID);
+ if (ReadDOC(window, ChipID) != DOC_ChipID_DocMil)
+ ChipID = DOC_ChipID_Doc2kTSOP;
+
/* Check the TOGGLE bit in the ECC register */
tmp = ReadDOC(window, ECCConf) & DOC_TOGGLE_BIT;
tmpb = ReadDOC(window, ECCConf) & DOC_TOGGLE_BIT;
tmpc = ReadDOC(window, Mplus_Toggle) & DOC_TOGGLE_BIT;
if (tmp != tmpb && tmp == tmpc)
return ChipID;
- break;
default:
break;
}
default:
-#ifndef CONFIG_MTD_DOCPROBE_55AA
- printk(KERN_WARNING "Possible DiskOnChip with unknown ChipID %2.2X found at 0x%lx\n",
+#ifdef CONFIG_MTD_DOCPROBE_55AA
+ printk(KERN_DEBUG "Possible DiskOnChip with unknown ChipID %2.2X found at 0x%lx\n",
ChipID, physadr);
#endif
#ifndef DOC_PASSIVE_PROBE
return;
if ((ChipID = doccheck(docptr, physadr))) {
+ if (ChipID == DOC_ChipID_Doc2kTSOP) {
+ /* Remove this at your own peril. The hardware driver works but nothing prevents you from erasing bad blocks */
+ printk(KERN_NOTICE "Refusing to drive DiskOnChip 2000 TSOP until Bad Block Table is correctly supported by INFTL\n");
+ iounmap((void *)docptr);
+ return;
+ }
docfound = 1;
mtd = kmalloc(sizeof(struct DiskOnChip) + sizeof(struct mtd_info), GFP_KERNEL);
sprintf(namebuf, "with ChipID %2.2X", ChipID);
switch(ChipID) {
+ case DOC_ChipID_Doc2kTSOP:
+ name="2000 TSOP";
+ im_funcname = "DoC2k_init";
+ im_modname = "doc2000";
+ break;
+
case DOC_ChipID_Doc2k:
name="2000";
im_funcname = "DoC2k_init";
/*
* MTD driver for the 28F160F3 Flash Memory (non-CFI) on LART.
*
- * $Id: lart.c,v 1.5 2003/05/20 21:03:07 dwmw2 Exp $
+ * $Id: lart.c,v 1.6 2004/07/14 17:21:38 dwmw2 Exp $
*
* Author: Abraham vd Merwe <abraham@2d3d.co.za>
*
/*
- * Copyright (c) 2001 Maciej W. Rozycki
+ * Copyright (c) 2001 Maciej W. Rozycki
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
*
- * $Id: ms02-nv.c,v 1.4 2003/05/20 21:03:07 dwmw2 Exp $
+ * $Id: ms02-nv.c,v 1.6 2003/08/19 09:25:36 dwmw2 Exp $
*/
#include <linux/init.h>
static char version[] __initdata =
- "ms02-nv.c: v.1.0.0 13 Aug 2001 Maciej W. Rozycki.\n";
+ "ms02-nv.c: v.1.0.0 13 Aug 2001 Maciej W. Rozycki.\n";
MODULE_AUTHOR("Maciej W. Rozycki <macro@ds2.pg.gda.pl>");
MODULE_DESCRIPTION("DEC MS02-NV NVRAM module driver");
/*
* Addresses we probe for an MS02-NV at. Modules may be located
- * at any 8MB boundary within a 0MB up to 112MB range or at any 32MB
- * boundary within a 0MB up to 448MB range. We don't support a module
- * at 0MB, though.
+ * at any 8MiB boundary within a 0MiB up to 112MiB range or at any 32MiB
+ * boundary within a 0MiB up to 448MiB range. We don't support a module
+ * at 0MiB, though.
*/
static ulong ms02nv_addrs[] __initdata = {
0x07000000, 0x06800000, 0x06000000, 0x05800000, 0x05000000,
int ret = -ENODEV;
- /* The module decodes 8MB of address space. */
+ /* The module decodes 8MiB of address space. */
mod_res = kmalloc(sizeof(*mod_res), GFP_KERNEL);
if (!mod_res)
return -ENOMEM;
goto err_out_csr_res;
}
- printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %uMB.\n",
+ printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %uMiB.\n",
mtd->index, ms02nv_name, addr, size >> 20);
mp->next = root_ms02nv_mtd;
switch (mips_machtype) {
case MACH_DS5000_200:
- csr = (volatile u32 *)KN02_CSR_ADDR;
+ csr = (volatile u32 *)KN02_CSR_BASE;
if (*csr & KN02_CSR_BNK32M)
stride = 2;
break;
case MACH_DS5000_2X0:
- case MACH_DS5000:
+ case MACH_DS5900:
csr = (volatile u32 *)KN03_MCR_BASE;
if (*csr & KN03_MCR_BNK32M)
stride = 2;
/*
- * Copyright (c) 2001 Maciej W. Rozycki
+ * Copyright (c) 2001, 2003 Maciej W. Rozycki
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
+ * DEC MS02-NV (54-20948-01) battery backed-up NVRAM module for
+ * DECstation/DECsystem 5000/2x0 and DECsystem 5900 and 5900/260
+ * systems.
*
- * $Id: ms02-nv.h,v 1.1 2002/09/13 13:46:55 dwmw2 Exp $
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * $Id: ms02-nv.h,v 1.3 2003/08/19 09:25:36 dwmw2 Exp $
*/
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
+/*
+ * Addresses are decoded as follows:
+ *
+ * 0x000000 - 0x3fffff SRAM
+ * 0x400000 - 0x7fffff CSR
+ *
+ * Within the SRAM area the following ranges are forced by the system
+ * firmware:
+ *
+ * 0x000000 - 0x0003ff diagnostic area, destroyed upon a reboot
+ * 0x000400 - ENDofRAM storage area, available to operating systems
+ *
+ * but we can't really use the available area right from 0x000400 as
+ * the first word is used by the firmware as a status flag passed
+ * from an operating system. If anything but the valid data magic
+ * ID value is found, the firmware considers the SRAM clean, i.e.
+ * containing no valid data, and disables the battery resulting in
+ * data being erased as soon as power is switched off. So the choice
+ * for the start address of the user-available is 0x001000 which is
+ * nicely page aligned. The area between 0x000404 and 0x000fff may
+ * be used by the driver for own needs.
+ *
+ * The diagnostic area defines two status words to be read by an
+ * operating system, a magic ID to distinguish a MS02-NV board from
+ * anything else and a status information providing results of tests
+ * as well as the size of SRAM available, which can be 1MiB or 2MiB
+ * (that's what the firmware handles; no idea if 2MiB modules ever
+ * existed).
+ *
+ * The firmware only handles the MS02-NV board if installed in the
+ * last (15th) slot, so for any other location the status information
+ * stored in the SRAM cannot be relied upon. But from the hardware
+ * point of view there is no problem using up to 14 such boards in a
+ * system -- only the 1st slot needs to be filled with a DRAM module.
+ * The MS02-NV board is ECC-protected, like other MS02 memory boards.
+ *
+ * The state of the battery as provided by the CSR is reflected on
+ * the two onboard LEDs. When facing the battery side of the board,
+ * with the LEDs at the top left and the battery at the bottom right
+ * (i.e. looking from the back side of the system box), their meaning
+ * is as follows (the system has to be powered on):
+ *
+ * left LED battery disable status: lit = enabled
+ * right LED battery condition status: lit = OK
+ */
+
/* MS02-NV iomem register offsets. */
#define MS02NV_CSR 0x400000 /* control & status register */
+/* MS02-NV CSR status bits. */
+#define MS02NV_CSR_BATT_OK 0x01 /* battery OK */
+#define MS02NV_CSR_BATT_OFF 0x02 /* battery disabled */
+
+
/* MS02-NV memory offsets. */
#define MS02NV_DIAG 0x0003f8 /* diagnostic status */
#define MS02NV_MAGIC 0x0003fc /* MS02-NV magic ID */
-#define MS02NV_RAM 0x000400 /* general-purpose RAM start */
+#define MS02NV_VALID 0x000400 /* valid data magic ID */
+#define MS02NV_RAM 0x001000 /* user-exposed RAM start */
-/* MS02-NV diagnostic status constants. */
-#define MS02NV_DIAG_SIZE_MASK 0xf0 /* RAM size mask */
-#define MS02NV_DIAG_SIZE_SHIFT 0x10 /* RAM size shift (left) */
+/* MS02-NV diagnostic status bits. */
+#define MS02NV_DIAG_TEST 0x01 /* SRAM test done (?) */
+#define MS02NV_DIAG_RO 0x02 /* SRAM r/o test done */
+#define MS02NV_DIAG_RW 0x04 /* SRAM r/w test done */
+#define MS02NV_DIAG_FAIL 0x08 /* SRAM test failed */
+#define MS02NV_DIAG_SIZE_MASK 0xf0 /* SRAM size mask */
+#define MS02NV_DIAG_SIZE_SHIFT 0x10 /* SRAM size shift (left) */
/* MS02-NV general constants. */
#define MS02NV_ID 0x03021966 /* MS02-NV magic ID value */
+#define MS02NV_VALID_ID 0xbd100248 /* valid data magic ID value */
#define MS02NV_SLOT_SIZE 0x800000 /* size of the address space
decoded by the module */
+
typedef volatile u32 ms02nv_uint;
struct ms02nv_private {
--- /dev/null
+/**
+ *
+ * $Id: phram.c,v 1.1 2003/08/21 17:52:30 joern Exp $
+ *
+ * Copyright (c) Jochen Schaeuble <psionic@psionic.de>
+ * 07/2003 rewritten by Joern Engel <joern@wh.fh-wedel.de>
+ *
+ * DISCLAIMER: This driver makes use of Rusty's excellent module code,
+ * so it will not work for 2.4 without changes and it wont work for 2.4
+ * as a module without major changes. Oh well!
+ *
+ * Usage:
+ *
+ * one commend line parameter per device, each in the form:
+ * phram=<name>,<start>,<len>
+ * <name> may be up to 63 characters.
+ * <start> and <len> can be octal, decimal or hexadecimal. If followed
+ * by "k", "M" or "G", the numbers will be interpreted as kilo, mega or
+ * gigabytes.
+ *
+ */
+
+#include <asm/io.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/mtd/mtd.h>
+
+#define ERROR(fmt, args...) printk(KERN_ERR "phram: " fmt , ## args)
+
+struct phram_mtd_list {
+ struct list_head list;
+ struct mtd_info *mtdinfo;
+};
+
+static LIST_HEAD(phram_list);
+
+
+
+int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+ u_char *start = (u_char *)mtd->priv;
+
+ if (instr->addr + instr->len > mtd->size)
+ return -EINVAL;
+
+ memset(start + instr->addr, 0xff, instr->len);
+
+ /* This'll catch a few races. Free the thing before returning :)
+ * I don't feel at all ashamed. This kind of thing is possible anyway
+ * with flash, but unlikely.
+ */
+
+ instr->state = MTD_ERASE_DONE;
+
+ if (instr->callback)
+ (*(instr->callback))(instr);
+ else
+ kfree(instr);
+
+ return 0;
+}
+
+int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char **mtdbuf)
+{
+ u_char *start = (u_char *)mtd->priv;
+
+ if (from + len > mtd->size)
+ return -EINVAL;
+
+ *mtdbuf = start + from;
+ *retlen = len;
+ return 0;
+}
+
+void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+{
+}
+
+int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf)
+{
+ u_char *start = (u_char *)mtd->priv;
+
+ if (from + len > mtd->size)
+ return -EINVAL;
+
+ memcpy(buf, start + from, len);
+
+ *retlen = len;
+ return 0;
+}
+
+int phram_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf)
+{
+ u_char *start = (u_char *)mtd->priv;
+
+ if (to + len > mtd->size)
+ return -EINVAL;
+
+ memcpy(start + to, buf, len);
+
+ *retlen = len;
+ return 0;
+}
+
+
+
+static void unregister_devices(void)
+{
+ struct phram_mtd_list *this;
+
+ list_for_each_entry(this, &phram_list, list) {
+ del_mtd_device(this->mtdinfo);
+ iounmap(this->mtdinfo->priv);
+ kfree(this->mtdinfo);
+ kfree(this);
+ }
+}
+
+static int register_device(char *name, unsigned long start, unsigned long len)
+{
+ struct phram_mtd_list *new;
+ int ret = -ENOMEM;
+
+ new = kmalloc(sizeof(*new), GFP_KERNEL);
+ if (!new)
+ goto out0;
+
+ new->mtdinfo = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
+ if (!new->mtdinfo)
+ goto out1;
+
+ memset(new->mtdinfo, 0, sizeof(struct mtd_info));
+
+ ret = -EIO;
+ new->mtdinfo->priv = ioremap(start, len);
+ if (!new->mtdinfo->priv) {
+ ERROR("ioremap failed\n");
+ goto out2;
+ }
+
+
+ new->mtdinfo->name = name;
+ new->mtdinfo->size = len;
+ new->mtdinfo->flags = MTD_CAP_RAM | MTD_ERASEABLE | MTD_VOLATILE;
+ new->mtdinfo->erase = phram_erase;
+ new->mtdinfo->point = phram_point;
+ new->mtdinfo->unpoint = phram_unpoint;
+ new->mtdinfo->read = phram_read;
+ new->mtdinfo->write = phram_write;
+ new->mtdinfo->owner = THIS_MODULE;
+ new->mtdinfo->type = MTD_RAM;
+ new->mtdinfo->erasesize = 0x0;
+
+ ret = -EAGAIN;
+ if (add_mtd_device(new->mtdinfo)) {
+ ERROR("Failed to register new device\n");
+ goto out3;
+ }
+
+ list_add_tail(&new->list, &phram_list);
+ return 0;
+
+out3:
+ iounmap(new->mtdinfo->priv);
+out2:
+ kfree(new->mtdinfo);
+out1:
+ kfree(new);
+out0:
+ return ret;
+}
+
+static int ustrtoul(const char *cp, char **endp, unsigned int base)
+{
+ unsigned long result = simple_strtoul(cp, endp, base);
+
+ switch (**endp) {
+ case 'G':
+ result *= 1024;
+ case 'M':
+ result *= 1024;
+ case 'k':
+ result *= 1024;
+ endp++;
+ }
+ return result;
+}
+
+static int parse_num32(uint32_t *num32, const char *token)
+{
+ char *endp;
+ unsigned long n;
+
+ n = ustrtoul(token, &endp, 0);
+ if (*endp)
+ return -EINVAL;
+
+ *num32 = n;
+ return 0;
+}
+
+static int parse_name(char **pname, const char *token)
+{
+ size_t len;
+ char *name;
+
+ len = strlen(token) + 1;
+ if (len > 64)
+ return -ENOSPC;
+
+ name = kmalloc(len, GFP_KERNEL);
+ if (!name)
+ return -ENOMEM;
+
+ strcpy(name, token);
+
+ *pname = name;
+ return 0;
+}
+
+#define parse_err(fmt, args...) do { \
+ ERROR(fmt , ## args); \
+ return 0; \
+} while (0)
+
+static int phram_setup(const char *val, struct kernel_param *kp)
+{
+ char buf[64+12+12], *str = buf;
+ char *token[3];
+ char *name;
+ uint32_t start;
+ uint32_t len;
+ int i, ret;
+
+ if (strnlen(val, sizeof(str)) >= sizeof(str))
+ parse_err("parameter too long\n");
+
+ strcpy(str, val);
+
+ for (i=0; i<3; i++)
+ token[i] = strsep(&str, ",");
+
+ if (str)
+ parse_err("too many arguments\n");
+
+ if (!token[2])
+ parse_err("not enough arguments\n");
+
+ ret = parse_name(&name, token[0]);
+ if (ret == -ENOMEM)
+ parse_err("out of memory\n");
+ if (ret == -ENOSPC)
+ parse_err("name too long\n");
+ if (ret)
+ return 0;
+
+ ret = parse_num32(&start, token[1]);
+ if (ret)
+ parse_err("illegal start address\n");
+
+ ret = parse_num32(&len, token[2]);
+ if (ret)
+ parse_err("illegal device length\n");
+
+ register_device(name, start, len);
+
+ return 0;
+}
+
+module_param_call(phram, phram_setup, NULL, NULL, 000);
+MODULE_PARM_DESC(phram, "Memory region to map. \"map=<name>,<start><length>\"");
+
+/*
+ * Just for compatibility with slram, this is horrible and should go someday.
+ */
+static int __init slram_setup(const char *val, struct kernel_param *kp)
+{
+ char buf[256], *str = buf;
+
+ if (!val || !val[0])
+ parse_err("no arguments to \"slram=\"\n");
+
+ if (strnlen(val, sizeof(str)) >= sizeof(str))
+ parse_err("parameter too long\n");
+
+ strcpy(str, val);
+
+ while (str) {
+ char *token[3];
+ char *name;
+ uint32_t start;
+ uint32_t len;
+ int i, ret;
+
+ for (i=0; i<3; i++) {
+ token[i] = strsep(&str, ",");
+ if (token[i])
+ continue;
+ parse_err("wrong number of arguments to \"slram=\"\n");
+ }
+
+ /* name */
+ ret = parse_name(&name, token[0]);
+ if (ret == -ENOMEM)
+ parse_err("of memory\n");
+ if (ret == -ENOSPC)
+ parse_err("too long\n");
+ if (ret)
+ return 1;
+
+ /* start */
+ ret = parse_num32(&start, token[1]);
+ if (ret)
+ parse_err("illegal start address\n");
+
+ /* len */
+ if (token[2][0] == '+')
+ ret = parse_num32(&len, token[2] + 1);
+ else
+ ret = parse_num32(&len, token[2]);
+
+ if (ret)
+ parse_err("illegal device length\n");
+
+ if (token[2][0] != '+') {
+ if (len < start)
+ parse_err("end < start\n");
+ len -= start;
+ }
+
+ register_device(name, start, len);
+ }
+ return 1;
+}
+
+module_param_call(slram, slram_setup, NULL, NULL, 000);
+MODULE_PARM_DESC(slram, "List of memory regions to map. \"map=<name>,<start><length/end>\"");
+
+
+int __init init_phram(void)
+{
+ printk(KERN_ERR "phram loaded\n");
+ return 0;
+}
+
+static void __exit cleanup_phram(void)
+{
+ unregister_devices();
+}
+
+module_init(init_phram);
+module_exit(cleanup_phram);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jörn Engel <joern@wh.fh-wedel.de>");
+MODULE_DESCRIPTION("MTD driver for physical RAM");
/*
- * $Id: pmc551.c,v 1.24 2003/05/20 21:03:08 dwmw2 Exp $
+ * $Id: pmc551.c,v 1.26 2004/07/14 17:25:07 dwmw2 Exp $
*
* PMC551 PCI Mezzanine Ram Device
*
/* This version ported to the Linux-MTD system by dwmw2@infradead.org
- * $Id: ftl.c,v 1.51 2003/06/23 12:00:08 dwmw2 Exp $
+ * $Id: ftl.c,v 1.52 2003/08/11 09:00:44 dwmw2 Exp $
*
* Fixes: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* - fixes some leaks on failure in build_maps and ftl_notify_add, cleanups
int init_ftl(void)
{
- DEBUG(0, "$Id: ftl.c,v 1.51 2003/06/23 12:00:08 dwmw2 Exp $\n");
+ DEBUG(0, "$Id: ftl.c,v 1.52 2003/08/11 09:00:44 dwmw2 Exp $\n");
return register_mtd_blktrans(&ftl_tr);
}
* (c) 1999 Machine Vision Holdings, Inc.
* Author: David Woodhouse <dwmw2@infradead.org>
*
- * $Id: inftlcore.c,v 1.14 2003/06/26 08:28:26 dwmw2 Exp $
+ * $Id: inftlcore.c,v 1.16 2004/07/12 12:34:58 dwmw2 Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
struct INFTLrecord *inftl;
unsigned long temp;
- if (mtd->ecctype != MTD_ECC_RS_DiskOnChip)
+ if (mtd->type != MTD_NANDFLASH)
+ return;
+ /* OK, this is moderately ugly. But probably safe. Alternatives? */
+ if (memcmp(mtd->name, "DiskOnChip", 10))
return;
+ if (!mtd->block_isbad) {
+ printk(KERN_ERR
+"INFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
+"Please use the new diskonchip driver under the NAND subsystem.\n");
+ return;
+ }
+
DEBUG(MTD_DEBUG_LEVEL3, "INFTL: add_mtd for %s\n", mtd->name);
inftl = kmalloc(sizeof(*inftl), GFP_KERNEL);
inftl->mbd.devnum = -1;
inftl->mbd.blksize = 512;
inftl->mbd.tr = tr;
+ memcpy(&inftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
+ inftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
if (INFTL_mount(inftl) < 0) {
printk(KERN_WARNING "INFTL: could not mount device\n");
if (BlockMap[block] == BLOCK_NIL)
continue;
- ret = MTD_READECC(inftl->mbd.mtd, (inftl->EraseSize *
+ ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE), SECTORSIZE,
- &retlen, movebuf, (char *)&oob, NULL);
+ &retlen, movebuf);
if (ret < 0) {
- ret = MTD_READECC(inftl->mbd.mtd, (inftl->EraseSize *
+ ret = MTD_READ(inftl->mbd.mtd, (inftl->EraseSize *
BlockMap[block]) + (block * SECTORSIZE),
- SECTORSIZE, &retlen, movebuf, (char *)&oob,
- NULL);
+ SECTORSIZE, &retlen, movebuf);
if (ret != -EIO)
DEBUG(MTD_DEBUG_LEVEL1, "INFTL: error went "
"away on retry?\n");
}
+ memset(&oob, 0xff, sizeof(struct inftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(inftl->mbd.mtd, (inftl->EraseSize * targetEUN) +
(block * SECTORSIZE), SECTORSIZE, &retlen,
- movebuf, (char *)&oob, NULL);
+ movebuf, (char *)&oob, &inftl->oobinfo);
}
/*
if (INFTL_formatblock(inftl, thisEUN) < 0) {
/*
* Could not erase : mark block as reserved.
- * FixMe: Update Bad Unit Table on disk.
*/
inftl->PUtable[thisEUN] = BLOCK_RESERVED;
} else {
if (INFTL_formatblock(inftl, thisEUN) < 0) {
/*
* Could not erase : mark block as reserved.
- * FixMe: Update Bad Unit Table on medium.
*/
inftl->PUtable[thisEUN] = BLOCK_RESERVED;
} else {
unsigned int writeEUN;
unsigned long blockofs = (block * SECTORSIZE) & (inftl->EraseSize - 1);
size_t retlen;
- u8 eccbuf[6];
+ struct inftl_oob oob;
char *p, *pend;
DEBUG(MTD_DEBUG_LEVEL3, "INFTL: inftl_writeblock(inftl=0x%x,block=%ld,"
return 1;
}
+ memset(&oob, 0xff, sizeof(struct inftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(inftl->mbd.mtd, (writeEUN * inftl->EraseSize) +
blockofs, SECTORSIZE, &retlen, (char *)buffer,
- (char *)eccbuf, NULL);
+ (char *)&oob, &inftl->oobinfo);
/*
- * No need to write SECTOR_USED flags since they are written
+ * need to write SECTOR_USED flags since they are not written
* in mtd_writeecc
*/
} else {
} else {
size_t retlen;
loff_t ptr = (thisEUN * inftl->EraseSize) + blockofs;
- u_char eccbuf[6];
- if (MTD_READECC(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
- buffer, eccbuf, NULL))
+ if (MTD_READ(inftl->mbd.mtd, ptr, SECTORSIZE, &retlen,
+ buffer))
return -EIO;
}
return 0;
int __init init_inftl(void)
{
- printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.14 $, "
+ printk(KERN_INFO "INFTL: inftlcore.c $Revision: 1.16 $, "
"inftlmount.c %s\n", inftlmountrev);
return register_mtd_blktrans(&inftl_tr);
* Author: Fabrice Bellard (fabrice.bellard@netgem.com)
* Copyright (C) 2000 Netgem S.A.
*
- * $Id: inftlmount.c,v 1.11 2003/06/23 07:39:21 dwmw2 Exp $
+ * $Id: inftlmount.c,v 1.13 2004/06/28 16:06:36 dbrown Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <linux/mtd/inftl.h>
#include <linux/mtd/compatmac.h>
-char inftlmountrev[]="$Revision: 1.11 $";
+char inftlmountrev[]="$Revision: 1.13 $";
/*
* find_boot_record: Find the INFTL Media Header and its Spare copy which
{
struct inftl_unittail h1;
//struct inftl_oob oob;
- unsigned int i, block, boot_record_count = 0;
+ unsigned int i, block;
u8 buf[SECTORSIZE];
struct INFTLMediaHeader *mh = &inftl->MediaHdr;
struct INFTLPartition *ip;
inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
inftl->MediaUnit = BLOCK_NIL;
- inftl->SpareMediaUnit = BLOCK_NIL;
/* Search for a valid boot record */
for (block = 0; block < inftl->nb_blocks; block++) {
* Check for BNAND header first. Then whinge if it's found
* but later checks fail.
*/
- if ((ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize,
- SECTORSIZE, &retlen, buf))) {
+ ret = MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize,
+ SECTORSIZE, &retlen, buf);
+ /* We ignore ret in case the ECC of the MediaHeader is invalid
+ (which is apparently acceptable) */
+ if (retlen != SECTORSIZE) {
static int warncount = 5;
if (warncount) {
continue;
}
- if (boot_record_count) {
- /*
- * We've already processed one. So we just check if
- * this one is the same as the first one we found.
- */
- if (memcmp(mh, buf, sizeof(struct INFTLMediaHeader))) {
- printk(KERN_WARNING "INFTL: Media Headers at "
- "0x%x and 0x%x disagree.\n",
- inftl->MediaUnit * inftl->EraseSize,
- block * inftl->EraseSize);
- return -1;
- }
- if (boot_record_count == 1)
- inftl->SpareMediaUnit = block;
-
- /*
- * Mark this boot record (INFTL MediaHeader) block as
- * reserved.
- */
- inftl->PUtable[block] = BLOCK_RESERVED;
-
- boot_record_count++;
- continue;
- }
/*
* This is the first we've seen.
* Copy the media header structure into place.
*/
memcpy(mh, buf, sizeof(struct INFTLMediaHeader));
+
+ /* Read the spare media header at offset 4096 */
+ MTD_READ(inftl->mbd.mtd, block * inftl->EraseSize + 4096,
+ SECTORSIZE, &retlen, buf);
+ if (retlen != SECTORSIZE) {
+ printk(KERN_WARNING "INFTL: Unable to read spare "
+ "Media Header\n");
+ return -1;
+ }
+ /* Check if this one is the same as the first one we found. */
+ if (memcmp(mh, buf, sizeof(struct INFTLMediaHeader))) {
+ printk(KERN_WARNING "INFTL: Primary and spare Media "
+ "Headers disagree.\n");
+ return -1;
+ }
+
mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks);
mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions);
mh->NoOfBDTLPartitions = le32_to_cpu(mh->NoOfBDTLPartitions);
"UnitSizeFactor 0x%02x is experimental\n",
mh->BlockMultiplierBits);
inftl->EraseSize = inftl->mbd.mtd->erasesize <<
- (0xff - mh->BlockMultiplierBits);
+ mh->BlockMultiplierBits;
inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+ block >>= mh->BlockMultiplierBits;
}
/* Scan the partitions */
/* Mark this boot record (NFTL MediaHeader) block as reserved */
inftl->PUtable[block] = BLOCK_RESERVED;
-#if 0
/* Read Bad Erase Unit Table and modify PUtable[] accordingly */
for (i = 0; i < inftl->nb_blocks; i++) {
- if ((i & (SECTORSIZE - 1)) == 0) {
- /* read one sector for every SECTORSIZE of blocks */
- if ((ret = MTD_READECC(inftl->mbd.mtd,
- block * inftl->EraseSize + i + SECTORSIZE,
- SECTORSIZE, &retlen, buf,
- (char *)&oob, NULL)) < 0) {
- printk(KERN_WARNING "INFTL: read of "
- "bad sector table failed "
- "(err %d)\n", ret);
- kfree(inftl->VUtable);
- kfree(inftl->PUtable);
- return -1;
- }
+ int physblock;
+ /* If any of the physical eraseblocks are bad, don't
+ use the unit. */
+ for (physblock = 0; physblock < inftl->EraseSize; physblock += inftl->mbd.mtd->erasesize) {
+ if (inftl->mbd.mtd->block_isbad(inftl->mbd.mtd, i * inftl->EraseSize + physblock))
+ inftl->PUtable[i] = BLOCK_RESERVED;
}
- /* Mark the Bad Erase Unit as RESERVED in PUtable */
- if (buf[i & (SECTORSIZE - 1)] != 0xff)
- inftl->PUtable[i] = BLOCK_RESERVED;
}
-#endif
inftl->MediaUnit = block;
- boot_record_count++;
+ return 0;
}
-
- return boot_record_count ? 0 : -1;
+
+ /* Not found. */
+ return -1;
}
static int memcmpb(void *a, int c, int n)
int len, int check_oob)
{
int i, retlen;
- u8 buf[SECTORSIZE];
+ u8 buf[SECTORSIZE + inftl->mbd.mtd->oobsize];
DEBUG(MTD_DEBUG_LEVEL3, "INFTL: check_free_sectors(inftl=0x%x,"
"address=0x%x,len=%d,check_oob=%d)\n", (int)inftl,
address, len, check_oob);
for (i = 0; i < len; i += SECTORSIZE) {
- /*
- * We want to read the sector without ECC check here since a
- * free sector does not have ECC syndrome on it yet.
- */
- if (MTD_READ(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf) < 0)
+ if (MTD_READECC(inftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &inftl->oobinfo) < 0)
return -1;
if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
return -1;
if (check_oob) {
- if (MTD_READOOB(inftl->mbd.mtd, address,
- inftl->mbd.mtd->oobsize, &retlen, buf) < 0)
- return -1;
- if (memcmpb(buf, 0xff, inftl->mbd.mtd->oobsize) != 0)
+ if (memcmpb(buf + SECTORSIZE, 0xff, inftl->mbd.mtd->oobsize) != 0)
return -1;
}
address += SECTORSIZE;
* Return: 0 when succeed, -1 on error.
*
* ToDo: 1. Is it neceressary to check_free_sector after erasing ??
- * 2. UnitSizeFactor != 0xFF
*/
int INFTL_formatblock(struct INFTLrecord *inftl, int block)
{
int retlen;
struct inftl_unittail uci;
struct erase_info *instr = &inftl->instr;
+ int physblock;
DEBUG(MTD_DEBUG_LEVEL3, "INFTL: INFTL_formatblock(inftl=0x%x,"
"block=%d)\n", (int)inftl, block);
memset(instr, 0, sizeof(struct erase_info));
+ /* FIXME: Shouldn't we be setting the 'discarded' flag to zero
+ _first_? */
+
/* Use async erase interface, test return code */
instr->addr = block * inftl->EraseSize;
- instr->len = inftl->EraseSize;
- MTD_ERASE(inftl->mbd.mtd, instr);
+ instr->len = inftl->mbd.mtd->erasesize;
+ /* Erase one physical eraseblock at a time, even though the NAND api
+ allows us to group them. This way we if we have a failure, we can
+ mark only the failed block in the bbt. */
+ for (physblock = 0; physblock < inftl->EraseSize; physblock += instr->len, instr->addr += instr->len) {
+ MTD_ERASE(inftl->mbd.mtd, instr);
+
+ if (instr->state == MTD_ERASE_FAILED) {
+ printk(KERN_WARNING "INFTL: error while formatting block %d\n",
+ block);
+ goto fail;
+ }
- if (instr->state == MTD_ERASE_FAILED) {
/*
- * Could not format, FixMe: We should update the BadUnitTable
- * both in memory and on disk.
- */
- printk(KERN_WARNING "INFTL: error while formatting block %d\n",
- block);
- return -1;
+ * Check the "freeness" of Erase Unit before updating metadata.
+ * FixMe: is this check really necessary? Since we have check the
+ * return code after the erase operation.
+ */
+ if (check_free_sectors(inftl, instr->addr, instr->len, 1) != 0)
+ goto fail;
}
- /*
- * Check the "freeness" of Erase Unit before updating metadata.
- * FixMe: is this check really necessary? Since we have check the
- * return code after the erase operation.
- */
- if (check_free_sectors(inftl, instr->addr, inftl->EraseSize, 1) != 0)
- return -1;
-
uci.EraseMark = cpu_to_le16(ERASE_MARK);
uci.EraseMark1 = cpu_to_le16(ERASE_MARK);
uci.Reserved[0] = 0;
uci.Reserved[1] = 0;
uci.Reserved[2] = 0;
uci.Reserved[3] = 0;
- if (MTD_WRITEOOB(inftl->mbd.mtd, block * inftl->EraseSize + SECTORSIZE * 2 +
+ instr->addr = block * inftl->EraseSize + SECTORSIZE * 2;
+ if (MTD_WRITEOOB(inftl->mbd.mtd, instr->addr +
8, 8, &retlen, (char *)&uci) < 0)
- return -1;
+ goto fail;
return 0;
+fail:
+ /* could not format, update the bad block table (caller is responsible
+ for setting the PUtable to BLOCK_RESERVED on failure) */
+ inftl->mbd.mtd->block_markbad(inftl->mbd.mtd, instr->addr);
+ return -1;
}
/*
if (INFTL_formatblock(inftl, block) < 0) {
/*
* Cannot format !!!! Mark it as Bad Unit,
- * FixMe: update the BadUnitTable on disk.
*/
inftl->PUtable[block] = BLOCK_RESERVED;
} else {
/*
- * $Id: mtd_blkdevs.c,v 1.16 2003/06/23 13:34:43 dwmw2 Exp $
+ * $Id: mtd_blkdevs.c,v 1.22 2004/07/12 12:35:28 dwmw2 Exp $
*
* (C) 2003 David Woodhouse <dwmw2@infradead.org>
*
snprintf(gd->devfs_name, sizeof(gd->devfs_name),
"%s/%c", tr->name, (tr->part_bits?'a':'0') + new->devnum);
- set_capacity(gd, new->size);
+ /* 2.5 has capacity in units of 512 bytes while still
+ having BLOCK_SIZE_BITS set to 10. Just to keep us amused. */
+ set_capacity(gd, (new->size * new->blksize) >> 9);
+
gd->private_data = new;
new->blkcore_priv = gd;
gd->queue = tr->blkcore_priv->rq;
/*
* Direct MTD block device access
*
- * $Id: mtdblock.c,v 1.63 2003/06/23 12:00:08 dwmw2 Exp $
+ * $Id: mtdblock.c,v 1.64 2003/10/04 17:14:14 dwmw2 Exp $
*
* (C) 2000-2003 Nicolas Pitre <nico@cam.org>
* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
/*
- * $Id: mtdchar.c,v 1.54 2003/05/21 10:50:43 dwmw2 Exp $
+ * $Id: mtdchar.c,v 1.62 2004/07/14 13:20:42 dwmw2 Exp $
*
* Character-device access to raw MTD devices.
*
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mtd/mtd.h>
+#include <linux/mtd/compatmac.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/fs.h>
#ifdef CONFIG_DEVFS_FS
#include <linux/devfs_fs_kernel.h>
-static void mtd_notify_add(struct mtd_info* mtd);
-static void mtd_notify_remove(struct mtd_info* mtd);
+
+static void mtd_notify_add(struct mtd_info* mtd)
+{
+ if (!mtd)
+ return;
+
+ devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
+ S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%d", mtd->index);
+
+ devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
+ S_IFCHR | S_IRUGO, "mtd/%dro", mtd->index);
+}
+
+static void mtd_notify_remove(struct mtd_info* mtd)
+{
+ if (!mtd)
+ return;
+ devfs_remove("mtd/%d", mtd->index);
+ devfs_remove("mtd/%dro", mtd->index);
+}
static struct mtd_notifier notifier = {
.add = mtd_notify_add,
.remove = mtd_notify_remove,
};
+static inline void mtdchar_devfs_init(void)
+{
+ devfs_mk_dir("mtd");
+ register_mtd_user(¬ifier);
+}
+
+static inline void mtdchar_devfs_exit(void)
+{
+ unregister_mtd_user(¬ifier);
+ devfs_remove("mtd");
+}
+#else /* !DEVFS */
+#define mtdchar_devfs_init() do { } while(0)
+#define mtdchar_devfs_exit() do { } while(0)
#endif
static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
memset (erase,0,sizeof(struct erase_info));
if (copy_from_user(&erase->addr, argp,
- 2 * sizeof(u_long))) {
+ sizeof(struct erase_info_user))) {
kfree(erase);
return -EFAULT;
}
ret = (mtd->write_oob)(mtd, buf.start, buf.length, &retlen, databuf);
- if (copy_to_user(argp + sizeof(u_int32_t), &retlen, sizeof(u_int32_t)))
+ if (copy_to_user(argp + sizeof(uint32_t), &retlen, sizeof(uint32_t)))
ret = -EFAULT;
kfree(databuf);
ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf);
- if (copy_to_user(argp + sizeof(u_int32_t), &retlen, sizeof(u_int32_t)))
+ if (put_user(retlen, (uint32_t __user *)argp))
ret = -EFAULT;
else if (retlen && copy_to_user(buf.ptr, databuf, retlen))
ret = -EFAULT;
case MEMLOCK:
{
- unsigned long adrs[2];
+ struct erase_info_user info;
- if (copy_from_user(adrs, argp, 2* sizeof(unsigned long)))
+ if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
if (!mtd->lock)
ret = -EOPNOTSUPP;
else
- ret = mtd->lock(mtd, adrs[0], adrs[1]);
+ ret = mtd->lock(mtd, info.start, info.length);
break;
}
case MEMUNLOCK:
{
- unsigned long adrs[2];
+ struct erase_info_user info;
- if (copy_from_user(adrs, argp, 2* sizeof(unsigned long)))
+ if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
if (!mtd->unlock)
ret = -EOPNOTSUPP;
else
- ret = mtd->unlock(mtd, adrs[0], adrs[1]);
+ ret = mtd->unlock(mtd, info.start, info.length);
break;
}
return -EFAULT;
break;
}
+
+ case MEMGETOOBSEL:
+ {
+ if (copy_to_user(argp, &(mtd->oobinfo), sizeof(struct nand_oobinfo)))
+ return -EFAULT;
+ break;
+ }
+
+ case MEMGETBADBLOCK:
+ {
+ loff_t offs;
+ if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ return -EFAULT;
+ if (!mtd->block_isbad)
+ ret = -EOPNOTSUPP;
+ else
+ return mtd->block_isbad(mtd, offs);
+ break;
+ }
+
+ case MEMSETBADBLOCK:
+ {
+ loff_t offs;
+
+ if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ return -EFAULT;
+ if (!mtd->block_markbad)
+ ret = -EOPNOTSUPP;
+ else
+ return mtd->block_markbad(mtd, offs);
+ break;
+ }
+
default:
DEBUG(MTD_DEBUG_LEVEL0, "Invalid ioctl %x (MEMGETINFO = %x)\n", cmd, MEMGETINFO);
ret = -ENOTTY;
.release = mtd_close,
};
-
-#ifdef CONFIG_DEVFS_FS
-/* Notification that a new device has been added. Create the devfs entry for
- * it. */
-
-static void mtd_notify_add(struct mtd_info* mtd)
-{
- if (!mtd)
- return;
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
- S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%d", mtd->index);
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
- S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%dro", mtd->index);
-}
-
-static void mtd_notify_remove(struct mtd_info* mtd)
-{
- if (!mtd)
- return;
- devfs_remove("mtd/%d", mtd->index);
- devfs_remove("mtd/%dro", mtd->index);
-}
-#endif
-
static int __init init_mtdchar(void)
{
if (register_chrdev(MTD_CHAR_MAJOR, "mtd", &mtd_fops)) {
return -EAGAIN;
}
-#ifdef CONFIG_DEVFS_FS
- devfs_mk_dir("mtd");
-
- register_mtd_user(¬ifier);
-#endif
+ mtdchar_devfs_init();
return 0;
}
static void __exit cleanup_mtdchar(void)
{
-#ifdef CONFIG_DEVFS_FS
- unregister_mtd_user(¬ifier);
- devfs_remove("mtd");
-#endif
+ mtdchar_devfs_exit();
unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
}
*
* This code is GPL
*
- * $Id: mtdconcat.c,v 1.8 2003/06/30 11:01:26 dwmw2 Exp $
+ * $Id: mtdconcat.c,v 1.9 2004/06/30 15:17:41 dbrown Exp $
*/
#include <linux/module.h>
struct mtd_concat *concat = CONCAT(mtd);
struct mtd_info *subdev;
int i, err;
- u_int32_t length;
+ u_int32_t length, offset = 0;
struct erase_info *erase;
if (!(mtd->flags & MTD_WRITEABLE))
return -EINVAL;
}
+ instr->fail_addr = 0xffffffff;
+
/* make a local copy of instr to avoid modifying the caller's struct */
erase = kmalloc(sizeof (struct erase_info), GFP_KERNEL);
*/
for (i = 0; i < concat->num_subdev; i++) {
subdev = concat->subdev[i];
- if (subdev->size <= erase->addr)
+ if (subdev->size <= erase->addr) {
erase->addr -= subdev->size;
- else
+ offset += subdev->size;
+ } else {
break;
+ }
}
/* must never happen since size limit has been verified above */
* block alignment has been checked above */
if (err == -EINVAL)
BUG();
+ if (erase->fail_addr != 0xffffffff)
+ instr->fail_addr = erase->fail_addr + offset;
break;
}
/*
* current subdevice, i.e. at offset zero.
*/
erase->addr = 0;
+ offset += subdev->size;
}
+ instr->state = erase->state;
kfree(erase);
if (err)
return err;
- instr->state = MTD_ERASE_DONE;
if (instr->callback)
instr->callback(instr);
return 0;
/*
- * $Id: mtdcore.c,v 1.39 2003/05/21 15:15:03 dwmw2 Exp $
+ * $Id: mtdcore.c,v 1.42 2004/07/13 10:21:13 dwmw2 Exp $
*
* Core registration and callback routines for MTD
* drivers and users.
/* Support for /proc/mtd */
#ifdef CONFIG_PROC_FS
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
static struct proc_dir_entry *proc_mtd;
-#endif
static inline int mtd_proc_info (char *buf, int i)
{
this->erasesize, this->name);
}
-static int mtd_read_proc ( char *page, char **start, off_t off,int count
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
- ,int *eof, void *data_unused
-#else
- ,int unused
-#endif
- )
+static int mtd_read_proc (char *page, char **start, off_t off, int count,
+ int *eof, void *data_unused)
{
int len, l, i;
off_t begin = 0;
}
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
*eof = 1;
-#endif
done:
up(&mtd_table_mutex);
return ((count < begin+len-off) ? count : begin+len-off);
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,2,0)
-struct proc_dir_entry mtd_proc_entry = {
- 0, /* low_ino: the inode -- dynamic */
- 3, "mtd", /* len of name and name */
- S_IFREG | S_IRUGO, /* mode */
- 1, 0, 0, /* nlinks, owner, group */
- 0, NULL, /* size - unused; operations -- use default */
- &mtd_read_proc, /* function used to read data */
- /* nothing more */
- };
-#endif
-
#endif /* CONFIG_PROC_FS */
/*====================================================================*/
int __init init_mtd(void)
{
#ifdef CONFIG_PROC_FS
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
if ((proc_mtd = create_proc_entry( "mtd", 0, NULL )))
- proc_mtd->read_proc = mtd_read_proc;
-#else
- proc_register_dynamic(&proc_root,&mtd_proc_entry);
-#endif
-#endif
-
-#if LINUX_VERSION_CODE < 0x20212
- init_mtd_devices();
+ proc_mtd->read_proc = mtd_read_proc;
#endif
#ifdef CONFIG_PM
#endif
#ifdef CONFIG_PROC_FS
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
if (proc_mtd)
- remove_proc_entry( "mtd", NULL);
-#else
- proc_unregister(&proc_root,mtd_proc_entry.low_ino);
-#endif
+ remove_proc_entry( "mtd", NULL);
#endif
}
/* Linux driver for NAND Flash Translation Layer */
/* (c) 1999 Machine Vision Holdings, Inc. */
/* Author: David Woodhouse <dwmw2@infradead.org> */
-/* $Id: nftlcore.c,v 1.94 2003/06/23 12:00:08 dwmw2 Exp $ */
+/* $Id: nftlcore.c,v 1.96 2004/06/28 13:52:55 dbrown Exp $ */
/*
The contents of this file are distributed under the GNU General
struct NFTLrecord *nftl;
unsigned long temp;
- if (mtd->ecctype != MTD_ECC_RS_DiskOnChip)
+ if (mtd->type != MTD_NANDFLASH)
+ return;
+ /* OK, this is moderately ugly. But probably safe. Alternatives? */
+ if (memcmp(mtd->name, "DiskOnChip", 10))
return;
+ if (!mtd->block_isbad) {
+ printk(KERN_ERR
+"NFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
+"Please use the new diskonchip driver under the NAND subsystem.\n");
+ return;
+ }
+
DEBUG(MTD_DEBUG_LEVEL1, "NFTL: add_mtd for %s\n", mtd->name);
nftl = kmalloc(sizeof(struct NFTLrecord), GFP_KERNEL);
nftl->mbd.devnum = -1;
nftl->mbd.blksize = 512;
nftl->mbd.tr = tr;
+ memcpy(&nftl->oobinfo, &mtd->oobinfo, sizeof(struct nand_oobinfo));
+ nftl->oobinfo.useecc = MTD_NANDECC_PLACEONLY;
if (NFTL_mount(nftl) < 0) {
printk(KERN_WARNING "NFTL: could not mount device\n");
if (BlockMap[block] == BLOCK_NIL)
continue;
- ret = MTD_READECC(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
- 512, &retlen, movebuf, (char *)&oob, NAND_ECC_DISKONCHIP);
+ ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block]) + (block * 512),
+ 512, &retlen, movebuf);
if (ret < 0) {
- ret = MTD_READECC(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block])
+ ret = MTD_READ(nftl->mbd.mtd, (nftl->EraseSize * BlockMap[block])
+ (block * 512), 512, &retlen,
- movebuf, (char *)&oob, NAND_ECC_DISKONCHIP);
+ movebuf);
if (ret != -EIO)
printk("Error went away on retry.\n");
}
+ memset(&oob, 0xff, sizeof(struct nftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(nftl->mbd.mtd, (nftl->EraseSize * targetEUN) + (block * 512),
- 512, &retlen, movebuf, (char *)&oob, NAND_ECC_DISKONCHIP);
+ 512, &retlen, movebuf, (char *)&oob, &nftl->oobinfo);
}
/* add the header so that it is now a valid chain */
if (NFTL_formatblock(nftl, thisEUN) < 0) {
/* could not erase : mark block as reserved
- * FixMe: Update Bad Unit Table on disk
*/
nftl->ReplUnitTable[thisEUN] = BLOCK_RESERVED;
} else {
u16 writeEUN;
unsigned long blockofs = (block * 512) & (nftl->EraseSize - 1);
size_t retlen;
- u8 eccbuf[6];
+ struct nftl_oob oob;
writeEUN = NFTL_findwriteunit(nftl, block);
return 1;
}
+ memset(&oob, 0xff, sizeof(struct nftl_oob));
+ oob.b.Status = oob.b.Status1 = SECTOR_USED;
MTD_WRITEECC(nftl->mbd.mtd, (writeEUN * nftl->EraseSize) + blockofs,
- 512, &retlen, (char *)buffer, (char *)eccbuf, NAND_ECC_DISKONCHIP);
- /* no need to write SECTOR_USED flags since they are written in mtd_writeecc */
+ 512, &retlen, (char *)buffer, (char *)&oob, &nftl->oobinfo);
+ /* need to write SECTOR_USED flags since they are not written in mtd_writeecc */
return 0;
}
} else {
loff_t ptr = (lastgoodEUN * nftl->EraseSize) + blockofs;
size_t retlen;
- u_char eccbuf[6];
- if (MTD_READECC(nftl->mbd.mtd, ptr, 512, &retlen, buffer, eccbuf, NAND_ECC_DISKONCHIP))
+ if (MTD_READ(nftl->mbd.mtd, ptr, 512, &retlen, buffer))
return -EIO;
}
return 0;
int __init init_nftl(void)
{
- printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.94 $, nftlmount.c %s\n", nftlmountrev);
+ printk(KERN_INFO "NFTL driver: nftlcore.c $Revision: 1.96 $, nftlmount.c %s\n", nftlmountrev);
return register_mtd_blktrans(&nftl_tr);
}
* Author: Fabrice Bellard (fabrice.bellard@netgem.com)
* Copyright (C) 2000 Netgem S.A.
*
- * $Id: nftlmount.c,v 1.34 2003/05/21 10:54:10 dwmw2 Exp $
+ * $Id: nftlmount.c,v 1.36 2004/06/28 13:52:55 dbrown Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#define SECTORSIZE 512
-char nftlmountrev[]="$Revision: 1.34 $";
+char nftlmountrev[]="$Revision: 1.36 $";
/* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the
* various device information of the NFTL partition and Bad Unit Table. Update
/* Assume logical EraseSize == physical erasesize for starting the scan.
We'll sort it out later if we find a MediaHeader which says otherwise */
+ /* Actually, we won't. The new DiskOnChip driver has already scanned
+ the MediaHeader and adjusted the virtual erasesize it presents in
+ the mtd device accordingly. We could even get rid of
+ nftl->EraseSize if there were any point in doing so. */
nftl->EraseSize = nftl->mbd.mtd->erasesize;
nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
/* Check for ANAND header first. Then can whinge if it's found but later
checks fail */
- if ((ret = MTD_READ(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE, &retlen, buf))) {
+ ret = MTD_READ(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE, &retlen, buf);
+ /* We ignore ret in case the ECC of the MediaHeader is invalid
+ (which is apparently acceptable) */
+ if (retlen != SECTORSIZE) {
static int warncount = 5;
if (warncount) {
/* Finally reread to check ECC */
if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize, SECTORSIZE,
- &retlen, buf, (char *)&oob, NAND_ECC_DISKONCHIP) < 0)) {
+ &retlen, buf, (char *)&oob, NULL) < 0)) {
printk(KERN_NOTICE "ANAND header found at 0x%x in mtd%d, but ECC read failed (err %d)\n",
block * nftl->EraseSize, nftl->mbd.mtd->index, ret);
continue;
memcpy(mh, buf, sizeof(struct NFTLMediaHeader));
/* Do some sanity checks on it */
+#if 0
+The new DiskOnChip driver scans the MediaHeader itself, and presents a virtual
+erasesize based on UnitSizeFactor. So the erasesize we read from the mtd
+device is already correct.
if (mh->UnitSizeFactor == 0) {
printk(KERN_NOTICE "NFTL: UnitSizeFactor 0x00 detected. This violates the spec but we think we know what it means...\n");
} else if (mh->UnitSizeFactor < 0xfc) {
nftl->EraseSize = nftl->mbd.mtd->erasesize << (0xff - mh->UnitSizeFactor);
nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
}
+#endif
nftl->nb_boot_blocks = le16_to_cpu(mh->FirstPhysicalEUN);
if ((nftl->nb_boot_blocks + 2) >= nftl->nb_blocks) {
printk(KERN_NOTICE "NFTL Media Header sanity check failed:\n");
/* read the Bad Erase Unit Table and modify ReplUnitTable[] accordingly */
for (i = 0; i < nftl->nb_blocks; i++) {
+#if 0
+The new DiskOnChip driver already scanned the bad block table. Just query it.
if ((i & (SECTORSIZE - 1)) == 0) {
/* read one sector for every SECTORSIZE of blocks */
if ((ret = MTD_READECC(nftl->mbd.mtd, block * nftl->EraseSize +
i + SECTORSIZE, SECTORSIZE, &retlen, buf,
- (char *)&oob, NAND_ECC_DISKONCHIP)) < 0) {
+ (char *)&oob, NULL)) < 0) {
printk(KERN_NOTICE "Read of bad sector table failed (err %d)\n",
ret);
kfree(nftl->ReplUnitTable);
/* mark the Bad Erase Unit as RESERVED in ReplUnitTable */
if (buf[i & (SECTORSIZE - 1)] != 0xff)
nftl->ReplUnitTable[i] = BLOCK_RESERVED;
+#endif
+ if (nftl->mbd.mtd->block_isbad(nftl->mbd.mtd, i * nftl->EraseSize))
+ nftl->ReplUnitTable[i] = BLOCK_RESERVED;
}
nftl->MediaUnit = block;
int check_oob)
{
int i, retlen;
- u8 buf[SECTORSIZE];
+ u8 buf[SECTORSIZE + nftl->mbd.mtd->oobsize];
for (i = 0; i < len; i += SECTORSIZE) {
- /* we want to read the sector without ECC check here since a free
- sector does not have ECC syndrome on it yet */
- if (MTD_READ(nftl->mbd.mtd, address, SECTORSIZE, &retlen, buf) < 0)
+ if (MTD_READECC(nftl->mbd.mtd, address, SECTORSIZE, &retlen, buf, &buf[SECTORSIZE], &nftl->oobinfo) < 0)
return -1;
if (memcmpb(buf, 0xff, SECTORSIZE) != 0)
return -1;
if (check_oob) {
- if (MTD_READOOB(nftl->mbd.mtd, address, nftl->mbd.mtd->oobsize,
- &retlen, buf) < 0)
- return -1;
- if (memcmpb(buf, 0xff, nftl->mbd.mtd->oobsize) != 0)
+ if (memcmpb(buf + SECTORSIZE, 0xff, nftl->mbd.mtd->oobsize) != 0)
return -1;
}
address += SECTORSIZE;
* Return: 0 when succeed, -1 on error.
*
* ToDo: 1. Is it neceressary to check_free_sector after erasing ??
- * 2. UnitSizeFactor != 0xFF
*/
int NFTL_formatblock(struct NFTLrecord *nftl, int block)
{
MTD_ERASE(nftl->mbd.mtd, instr);
if (instr->state == MTD_ERASE_FAILED) {
- /* could not format, FixMe: We should update the BadUnitTable
- both in memory and on disk */
printk("Error while formatting block %d\n", block);
- return -1;
- } else {
+ goto fail;
+ }
+
/* increase and write Wear-Leveling info */
nb_erases = le32_to_cpu(uci.WearInfo);
nb_erases++;
* FixMe: is this check really necessary ? since we have check the
* return code after the erase operation. */
if (check_free_sectors(nftl, instr->addr, nftl->EraseSize, 1) != 0)
- return -1;
+ goto fail;
uci.WearInfo = le32_to_cpu(nb_erases);
if (MTD_WRITEOOB(nftl->mbd.mtd, block * nftl->EraseSize + SECTORSIZE + 8, 8,
&retlen, (char *)&uci) < 0)
- return -1;
+ goto fail;
return 0;
- }
+fail:
+ /* could not format, update the bad block table (caller is responsible
+ for setting the ReplUnitTable to BLOCK_RESERVED on failure) */
+ nftl->mbd.mtd->block_markbad(nftl->mbd.mtd, instr->addr);
+ return -1;
}
/* check_sectors_in_chain: Check that each sector of a Virtual Unit Chain is correct.
printk("Formatting block %d\n", block);
if (NFTL_formatblock(nftl, block) < 0) {
- /* cannot format !!!! Mark it as Bad Unit,
- FixMe: update the BadUnitTable on disk */
+ /* cannot format !!!! Mark it as Bad Unit */
nftl->ReplUnitTable[block] = BLOCK_RESERVED;
} else {
nftl->ReplUnitTable[block] = BLOCK_FREE;
/*
- * $Id: redboot.c,v 1.11 2003/05/21 10:39:26 dwmw2 Exp $
+ * $Id: redboot.c,v 1.13 2004/04/01 10:17:40 gthomas Exp $
*
* Parse RedBoot-style Flash Image System (FIS) tables and
* produce a Linux partition array to match.
char *names;
char *nullname;
int namelen = 0;
+ int nulllen = 0;
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
static char nullstring[] = "unallocated";
+#endif
- buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ buf = kmalloc(master->erasesize, GFP_KERNEL);
if (!buf)
return -ENOMEM;
/* Read the start of the last erase block */
ret = master->read(master, master->size - master->erasesize,
- PAGE_SIZE, &retlen, (void *)buf);
+ master->erasesize, &retlen, (void *)buf);
if (ret)
goto out;
- if (retlen != PAGE_SIZE) {
+ if (retlen != master->erasesize) {
ret = -EIO;
goto out;
}
goto out;
}
- for (i = 0; i < PAGE_SIZE / sizeof(struct fis_image_desc); i++) {
+ for (i = 0; i < master->erasesize / sizeof(struct fis_image_desc); i++) {
struct fis_list *new_fl, **prev;
if (buf[i].name[0] == 0xff)
nrparts++;
}
- if (fl->img->flash_base)
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ if (fl->img->flash_base) {
nrparts++;
+ nulllen = sizeof(nullstring);
+ }
for (tmp_fl = fl; tmp_fl->next; tmp_fl = tmp_fl->next) {
- if (tmp_fl->img->flash_base + tmp_fl->img->size + master->erasesize < tmp_fl->next->img->flash_base)
+ if (tmp_fl->img->flash_base + tmp_fl->img->size + master->erasesize <= tmp_fl->next->img->flash_base) {
nrparts++;
+ nulllen = sizeof(nullstring);
+ }
}
- parts = kmalloc(sizeof(*parts)*nrparts + sizeof(nullstring) + namelen, GFP_KERNEL);
+#endif
+ parts = kmalloc(sizeof(*parts)*nrparts + nulllen + namelen, GFP_KERNEL);
if (!parts) {
ret = -ENOMEM;
goto out;
}
- memset(parts, 0, sizeof(*parts)*nrparts + namelen);
+ memset(parts, 0, sizeof(*parts)*nrparts + nulllen + namelen);
- /* FIXME: Include nullname only if it's used */
nullname = (char *)&parts[nrparts];
- sprintf(nullname, nullstring);
- names = nullname + sizeof(nullstring);
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ if (nulllen > 0) {
+ strcpy(nullname, nullstring);
+ }
+#endif
+ names = nullname + nulllen;
i=0;
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
if (fl->img->flash_base) {
parts[0].name = nullname;
parts[0].size = fl->img->flash_base;
parts[0].offset = 0;
+ i++;
}
+#endif
for ( ; i<nrparts; i++) {
parts[i].size = fl->img->size;
parts[i].offset = fl->img->flash_base;
parts[i].name = names;
strcpy(names, fl->img->name);
+#ifdef CONFIG_MTD_REDBOOT_PARTS_READONLY
+ if (!memcmp(names, "RedBoot", 8) ||
+ !memcmp(names, "RedBoot config", 15) ||
+ !memcmp(names, "FIS directory", 14)) {
+ parts[i].mask_flags = MTD_WRITEABLE;
+ }
+#endif
names += strlen(names)+1;
- if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize < fl->next->img->flash_base) {
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
i++;
parts[i].offset = parts[i-1].size + parts[i-1].offset;
parts[i].size = fl->next->img->flash_base - parts[i].offset;
parts[i].name = nullname;
}
+#endif
tmp_fl = fl;
fl = fl->next;
kfree(tmp_fl);
-
-/* Linux driver for Disk-On-Chip 2000 */
-/* (c) 1999 Machine Vision Holdings, Inc. */
-/* Author: David Woodhouse <dwmw2@mvhi.com> */
-/* $Id: doc2000.h,v 1.17 2003/06/12 01:20:46 gerg Exp $ */
+/*
+ * Linux driver for Disk-On-Chip devices
+ *
+ * Copyright (C) 1999 Machine Vision Holdings, Inc.
+ * Copyright (C) 2001-2003 David Woodhouse <dwmw2@infradead.org>
+ * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com>
+ * Copyright (C) 2002-2003 SnapGear Inc
+ *
+ * $Id: doc2000.h,v 1.22 2003/11/05 10:51:36 dwmw2 Exp $
+ *
+ * Released under GPL
+ */
#ifndef __MTD_DOC2000_H__
#define __MTD_DOC2000_H__
#include <linux/mtd/mtd.h>
+#include <asm/semaphore.h>
#define DoC_Sig1 0
#define DoC_Sig2 1
* Others use readb/writeb
*/
#if defined(__arm__)
-#define ReadDOC_(adr, reg) ((unsigned char)(*(__u32 *)(((unsigned long)adr)+((reg)<<2))))
-#define WriteDOC_(d, adr, reg) do{ *(__u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
+#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2))))
+#define WriteDOC_(d, adr, reg) do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
#define DOC_IOREMAP_LEN 0x8000
#elif defined(__ppc__)
-#define ReadDOC_(adr, reg) ((unsigned char)(*(__u16 *)(((unsigned long)adr)+((reg)<<1))))
-#define WriteDOC_(d, adr, reg) do{ *(__u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
+#define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1))))
+#define WriteDOC_(d, adr, reg) do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
#define DOC_IOREMAP_LEN 0x4000
#else
#define ReadDOC_(adr, reg) readb(((unsigned long)adr) + (reg))
#define DOC_MODE_MDWREN 0x04
#define DOC_ChipID_Doc2k 0x20
+#define DOC_ChipID_Doc2kTSOP 0x21 /* internal number for MTD */
#define DOC_ChipID_DocMil 0x30
#define DOC_ChipID_DocMilPlus32 0x40
#define DOC_ChipID_DocMilPlus16 0x41
#define MAX_FLOORS 4
#define MAX_CHIPS 4
-#define MAX_FLOORS_MIL 4
+#define MAX_FLOORS_MIL 1
#define MAX_CHIPS_MIL 1
-#define MAX_FLOORS_MPLUS 1
+#define MAX_FLOORS_MPLUS 2
#define MAX_CHIPS_MPLUS 1
#define ADDR_COLUMN 1
unsigned long physadr;
unsigned long virtadr;
unsigned long totlen;
- char ChipID; /* Type of DiskOnChip */
+ unsigned char ChipID; /* Type of DiskOnChip */
int ioreg;
unsigned long mfr; /* Flash IDs - only one type of flash per device */
/*
- * $Id: ftl.h,v 1.5 2001/06/02 20:35:51 dwmw2 Exp $
+ * $Id: ftl.h,v 1.6 2003/01/24 13:20:04 dwmw2 Exp $
*
* Derived from (and probably identical to):
* ftl.h 1.7 1999/10/25 20:23:17
*
* (C) Copyright 2002, Greg Ungerer (gerg@snapgear.com)
*
- * $Id: inftl.h,v 1.3 2003/05/23 11:35:34 dwmw2 Exp $
+ * $Id: inftl.h,v 1.6 2004/06/30 14:49:00 dbrown Exp $
*/
#ifndef __MTD_INFTL_H__
#define __MTD_INFTL_H__
+#ifndef __KERNEL__
+#error This is a kernel header. Perhaps include nftl-user.h instead?
+#endif
+
#include <linux/mtd/blktrans.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nftl.h>
-#define OSAK_VERSION 0x5120
-#define PERCENTUSED 98
-
-#define SECTORSIZE 512
+#include <mtd/inftl-user.h>
#ifndef INFTL_MAJOR
-#define INFTL_MAJOR 93 /* FIXME */
+#define INFTL_MAJOR 94
#endif
#define INFTL_PARTN_BITS 4
-/* Block Control Information */
-
-struct inftl_bci {
- __u8 ECCsig[6];
- __u8 Status;
- __u8 Status1;
-} __attribute__((packed));
-
-struct inftl_unithead1 {
- __u16 virtualUnitNo;
- __u16 prevUnitNo;
- __u8 ANAC;
- __u8 NACs;
- __u8 parityPerField;
- __u8 discarded;
-} __attribute__((packed));
-
-struct inftl_unithead2 {
- __u8 parityPerField;
- __u8 ANAC;
- __u16 prevUnitNo;
- __u16 virtualUnitNo;
- __u8 NACs;
- __u8 discarded;
-} __attribute__((packed));
-
-struct inftl_unittail {
- __u8 Reserved[4];
- __u16 EraseMark;
- __u16 EraseMark1;
-} __attribute__((packed));
-
-union inftl_uci {
- struct inftl_unithead1 a;
- struct inftl_unithead2 b;
- struct inftl_unittail c;
-};
-
-struct inftl_oob {
- struct inftl_bci b;
- union inftl_uci u;
-};
-
-
-/* INFTL Media Header */
-
-struct INFTLPartition {
- __u32 virtualUnits;
- __u32 firstUnit;
- __u32 lastUnit;
- __u32 flags;
- __u32 spareUnits;
- __u32 Reserved0;
- __u32 Reserved1;
-} __attribute__((packed));
-
-struct INFTLMediaHeader {
- char bootRecordID[8];
- __u32 NoOfBootImageBlocks;
- __u32 NoOfBinaryPartitions;
- __u32 NoOfBDTLPartitions;
- __u32 BlockMultiplierBits;
- __u32 FormatFlags;
- __u32 OsakVersion;
- __u32 PercentUsed;
- struct INFTLPartition Partitions[4];
-} __attribute__((packed));
-
-/* Partition flag types */
-#define INFTL_BINARY 0x20000000
-#define INFTL_BDTL 0x40000000
-#define INFTL_LAST 0x80000000
-
-
#ifdef __KERNEL__
struct INFTLrecord {
struct mtd_blktrans_dev mbd;
- __u16 MediaUnit, SpareMediaUnit;
+ __u16 MediaUnit;
__u32 EraseSize;
struct INFTLMediaHeader MediaHdr;
int usecount;
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
+ struct nand_oobinfo oobinfo;
};
int INFTL_mount(struct INFTLrecord *s);
-
-/* $Id: mtd.h,v 1.45 2003/05/20 21:56:40 dwmw2 Exp $ */
+/*
+ * $Id: mtd.h,v 1.54 2004/07/15 01:13:12 dwmw2 Exp $
+ *
+ * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
+ *
+ * Released under GPL
+ */
#ifndef __MTD_MTD_H__
#define __MTD_MTD_H__
-#ifdef __KERNEL__
+#ifndef __KERNEL__
+#error This is a kernel header. Perhaps include mtd-user.h instead?
+#endif
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/uio.h>
-#endif /* __KERNEL__ */
-
-struct erase_info_user {
- u_int32_t start;
- u_int32_t length;
-};
-
-struct mtd_oob_buf {
- u_int32_t start;
- u_int32_t length;
- unsigned char __user *ptr;
-};
+#include <mtd/mtd-abi.h>
#define MTD_CHAR_MAJOR 90
#define MTD_BLOCK_MAJOR 31
#define MAX_MTD_DEVICES 16
-
-
-#define MTD_ABSENT 0
-#define MTD_RAM 1
-#define MTD_ROM 2
-#define MTD_NORFLASH 3
-#define MTD_NANDFLASH 4
-#define MTD_PEROM 5
-#define MTD_OTHER 14
-#define MTD_UNKNOWN 15
-
-
-
-#define MTD_CLEAR_BITS 1 // Bits can be cleared (flash)
-#define MTD_SET_BITS 2 // Bits can be set
-#define MTD_ERASEABLE 4 // Has an erase function
-#define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible
-#define MTD_VOLATILE 16 // Set for RAMs
-#define MTD_XIP 32 // eXecute-In-Place possible
-#define MTD_OOB 64 // Out-of-band data (NAND flash)
-#define MTD_ECC 128 // Device capable of automatic ECC
-
-// Some common devices / combinations of capabilities
-#define MTD_CAP_ROM 0
-#define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
-#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE)
-#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
-#define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS)
-
-
-// Types of automatic ECC/Checksum available
-#define MTD_ECC_NONE 0 // No automatic ECC available
-#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
-#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
-
-struct mtd_info_user {
- u_char type;
- u_int32_t flags;
- u_int32_t size; // Total size of the MTD
- u_int32_t erasesize;
- u_int32_t oobblock; // Size of OOB blocks (e.g. 512)
- u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
- u_int32_t ecctype;
- u_int32_t eccsize;
-};
-
-struct region_info_user {
- u_int32_t offset; /* At which this region starts,
- * from the beginning of the MTD */
- u_int32_t erasesize; /* For this region */
- u_int32_t numblocks; /* Number of blocks in this region */
- u_int32_t regionindex;
-};
-
-#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
-#define MEMERASE _IOW('M', 2, struct erase_info_user)
-#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
-#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
-#define MEMLOCK _IOW('M', 5, struct erase_info_user)
-#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
-#define MEMGETREGIONCOUNT _IOR('M', 7, int)
-#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
-#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
-
-struct nand_oobinfo {
- int useecc;
- int eccpos[6];
-};
-
-
-#ifndef __KERNEL__
-
-typedef struct mtd_info_user mtd_info_t;
-typedef struct erase_info_user erase_info_t;
-typedef struct region_info_user region_info_t;
-typedef struct nand_oobinfo nand_oobinfo_t;
-
- /* User-space ioctl definitions */
-
-#else /* __KERNEL__ */
-
-
#define MTD_ERASE_PENDING 0x01
#define MTD_ERASING 0x02
#define MTD_ERASE_SUSPEND 0x04
#define MTD_ERASE_DONE 0x08
#define MTD_ERASE_FAILED 0x10
+/* If the erase fails, fail_addr might indicate exactly which block failed. If
+ fail_addr = 0xffffffff, the failure was not at the device level or was not
+ specific to any particular block. */
struct erase_info {
struct mtd_info *mtd;
u_int32_t addr;
u_int32_t len;
+ u_int32_t fail_addr;
u_long time;
u_long retries;
u_int dev;
u_int32_t oobblock; // Size of OOB blocks (e.g. 512)
u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
+ u_int32_t oobavail; // Number of bytes in OOB area available for fs
u_int32_t ecctype;
u_int32_t eccsize;
int (*suspend) (struct mtd_info *mtd);
void (*resume) (struct mtd_info *mtd);
+ /* Bad block management functions */
+ int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
+ int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
+
void *priv;
struct module *owner;
#endif /* CONFIG_MTD_DEBUG */
-#endif /* __KERNEL__ */
-
#endif /* __MTD_MTD_H__ */
/*
- * $Id: nftl.h,v 1.13 2003/05/23 11:25:02 dwmw2 Exp $
+ * $Id: nftl.h,v 1.16 2004/06/30 14:49:00 dbrown Exp $
*
* (C) 1999-2003 David Woodhouse <dwmw2@infradead.org>
*/
#include <linux/mtd/mtd.h>
#include <linux/mtd/blktrans.h>
-/* Block Control Information */
-
-struct nftl_bci {
- unsigned char ECCSig[6];
- __u8 Status;
- __u8 Status1;
-}__attribute__((packed));
-
-/* Unit Control Information */
-
-struct nftl_uci0 {
- __u16 VirtUnitNum;
- __u16 ReplUnitNum;
- __u16 SpareVirtUnitNum;
- __u16 SpareReplUnitNum;
-} __attribute__((packed));
-
-struct nftl_uci1 {
- __u32 WearInfo;
- __u16 EraseMark;
- __u16 EraseMark1;
-} __attribute__((packed));
-
-struct nftl_uci2 {
- __u16 FoldMark;
- __u16 FoldMark1;
- __u32 unused;
-} __attribute__((packed));
-
-union nftl_uci {
- struct nftl_uci0 a;
- struct nftl_uci1 b;
- struct nftl_uci2 c;
-};
-
-struct nftl_oob {
- struct nftl_bci b;
- union nftl_uci u;
-};
-
-/* NFTL Media Header */
-
-struct NFTLMediaHeader {
- char DataOrgID[6];
- __u16 NumEraseUnits;
- __u16 FirstPhysicalEUN;
- __u32 FormattedSize;
- unsigned char UnitSizeFactor;
-} __attribute__((packed));
-
-#define MAX_ERASE_ZONES (8192 - 512)
-
-#define ERASE_MARK 0x3c69
-#define SECTOR_FREE 0xff
-#define SECTOR_USED 0x55
-#define SECTOR_IGNORE 0x11
-#define SECTOR_DELETED 0x00
-
-#define FOLD_MARK_IN_PROGRESS 0x5555
-
-#define ZONE_GOOD 0xff
-#define ZONE_BAD_ORIGINAL 0
-#define ZONE_BAD_MARKED 7
-
-#ifdef __KERNEL__
+#include <mtd/nftl-user.h>
/* these info are used in ReplUnitTable */
#define BLOCK_NIL 0xffff /* last block of a chain */
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
+ struct nand_oobinfo oobinfo;
};
int NFTL_mount(struct NFTLrecord *s);
#define MAX_SECTORS_PER_UNIT 64
#define NFTL_PARTN_BITS 4
-#endif /* __KERNEL__ */
-
#endif /* __MTD_NFTL_H__ */
*
* This code is GPL
*
- * $Id: partitions.h,v 1.14 2003/05/20 21:56:29 dwmw2 Exp $
+ * $Id: partitions.h,v 1.15 2003/07/09 11:15:43 dwmw2 Exp $
*/
#ifndef MTD_PARTITIONS_H
#define MTDPART_SIZ_FULL (0)
-int add_mtd_partitions(struct mtd_info *, struct mtd_partition *, int);
+int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
int del_mtd_partitions(struct mtd_info *);
/*
--- /dev/null
+/*
+ * $Id: inftl-user.h,v 1.1 2004/05/05 15:17:00 dwmw2 Exp $
+ *
+ * Parts of INFTL headers shared with userspace
+ *
+ */
+
+#ifndef __MTD_INFTL_USER_H__
+#define __MTD_INFTL_USER_H__
+
+#define OSAK_VERSION 0x5120
+#define PERCENTUSED 98
+
+#define SECTORSIZE 512
+
+/* Block Control Information */
+
+struct inftl_bci {
+ uint8_t ECCsig[6];
+ uint8_t Status;
+ uint8_t Status1;
+} __attribute__((packed));
+
+struct inftl_unithead1 {
+ uint16_t virtualUnitNo;
+ uint16_t prevUnitNo;
+ uint8_t ANAC;
+ uint8_t NACs;
+ uint8_t parityPerField;
+ uint8_t discarded;
+} __attribute__((packed));
+
+struct inftl_unithead2 {
+ uint8_t parityPerField;
+ uint8_t ANAC;
+ uint16_t prevUnitNo;
+ uint16_t virtualUnitNo;
+ uint8_t NACs;
+ uint8_t discarded;
+} __attribute__((packed));
+
+struct inftl_unittail {
+ uint8_t Reserved[4];
+ uint16_t EraseMark;
+ uint16_t EraseMark1;
+} __attribute__((packed));
+
+union inftl_uci {
+ struct inftl_unithead1 a;
+ struct inftl_unithead2 b;
+ struct inftl_unittail c;
+};
+
+struct inftl_oob {
+ struct inftl_bci b;
+ union inftl_uci u;
+};
+
+
+/* INFTL Media Header */
+
+struct INFTLPartition {
+ __u32 virtualUnits;
+ __u32 firstUnit;
+ __u32 lastUnit;
+ __u32 flags;
+ __u32 spareUnits;
+ __u32 Reserved0;
+ __u32 Reserved1;
+} __attribute__((packed));
+
+struct INFTLMediaHeader {
+ char bootRecordID[8];
+ __u32 NoOfBootImageBlocks;
+ __u32 NoOfBinaryPartitions;
+ __u32 NoOfBDTLPartitions;
+ __u32 BlockMultiplierBits;
+ __u32 FormatFlags;
+ __u32 OsakVersion;
+ __u32 PercentUsed;
+ struct INFTLPartition Partitions[4];
+} __attribute__((packed));
+
+/* Partition flag types */
+#define INFTL_BINARY 0x20000000
+#define INFTL_BDTL 0x40000000
+#define INFTL_LAST 0x80000000
+
+#endif /* __MTD_INFTL_USER_H__ */
+
+
--- /dev/null
+/*
+ * $Id: jffs2-user.h,v 1.1 2004/05/05 11:57:54 dwmw2 Exp $
+ *
+ * JFFS2 definitions for use in user space only
+ */
+
+#ifndef __JFFS2_USER_H__
+#define __JFFS2_USER_H__
+
+/* This file is blessed for inclusion by userspace */
+#include <linux/jffs2.h>
+#include <endian.h>
+#include <byteswap.h>
+
+#undef cpu_to_je16
+#undef cpu_to_je32
+#undef cpu_to_jemode
+#undef je16_to_cpu
+#undef je32_to_cpu
+#undef jemode_to_cpu
+
+extern int target_endian;
+
+#define t16(x) ({ uint16_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_16(__b); })
+#define t32(x) ({ uint32_t __b = (x); (target_endian==__BYTE_ORDER)?__b:bswap_32(__b); })
+
+#define cpu_to_je16(x) ((jint16_t){t16(x)})
+#define cpu_to_je32(x) ((jint32_t){t32(x)})
+#define cpu_to_jemode(x) ((jmode_t){t32(x)})
+
+#define je16_to_cpu(x) (t16((x).v16))
+#define je32_to_cpu(x) (t32((x).v32))
+#define jemode_to_cpu(x) (t32((x).m))
+
+#endif /* __JFFS2_USER_H__ */
--- /dev/null
+/*
+ * $Id: mtd-abi.h,v 1.5 2004/06/22 09:29:35 gleixner Exp $
+ *
+ * Portions of MTD ABI definition which are shared by kernel and user space
+ */
+
+#ifndef __MTD_ABI_H__
+#define __MTD_ABI_H__
+
+struct erase_info_user {
+ uint32_t start;
+ uint32_t length;
+};
+
+struct mtd_oob_buf {
+ uint32_t start;
+ uint32_t length;
+ unsigned char *ptr;
+};
+
+#define MTD_ABSENT 0
+#define MTD_RAM 1
+#define MTD_ROM 2
+#define MTD_NORFLASH 3
+#define MTD_NANDFLASH 4
+#define MTD_PEROM 5
+#define MTD_OTHER 14
+#define MTD_UNKNOWN 15
+
+#define MTD_CLEAR_BITS 1 // Bits can be cleared (flash)
+#define MTD_SET_BITS 2 // Bits can be set
+#define MTD_ERASEABLE 4 // Has an erase function
+#define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible
+#define MTD_VOLATILE 16 // Set for RAMs
+#define MTD_XIP 32 // eXecute-In-Place possible
+#define MTD_OOB 64 // Out-of-band data (NAND flash)
+#define MTD_ECC 128 // Device capable of automatic ECC
+
+// Some common devices / combinations of capabilities
+#define MTD_CAP_ROM 0
+#define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
+#define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE)
+#define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
+#define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS)
+
+
+// Types of automatic ECC/Checksum available
+#define MTD_ECC_NONE 0 // No automatic ECC available
+#define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip
+#define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices
+
+/* ECC byte placement */
+#define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended)
+#define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode)
+#define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme
+#define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read)
+
+struct mtd_info_user {
+ uint8_t type;
+ uint32_t flags;
+ uint32_t size; // Total size of the MTD
+ uint32_t erasesize;
+ uint32_t oobblock; // Size of OOB blocks (e.g. 512)
+ uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
+ uint32_t ecctype;
+ uint32_t eccsize;
+};
+
+struct region_info_user {
+ uint32_t offset; /* At which this region starts,
+ * from the beginning of the MTD */
+ uint32_t erasesize; /* For this region */
+ uint32_t numblocks; /* Number of blocks in this region */
+ uint32_t regionindex;
+};
+
+#define MEMGETINFO _IOR('M', 1, struct mtd_info_user)
+#define MEMERASE _IOW('M', 2, struct erase_info_user)
+#define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf)
+#define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf)
+#define MEMLOCK _IOW('M', 5, struct erase_info_user)
+#define MEMUNLOCK _IOW('M', 6, struct erase_info_user)
+#define MEMGETREGIONCOUNT _IOR('M', 7, int)
+#define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user)
+#define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo)
+#define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo)
+#define MEMGETBADBLOCK _IOW('M', 11, loff_t)
+#define MEMSETBADBLOCK _IOW('M', 12, loff_t)
+
+struct nand_oobinfo {
+ uint32_t useecc;
+ uint32_t eccbytes;
+ uint32_t oobfree[8][2];
+ uint32_t eccpos[32];
+};
+
+#endif /* __MTD_ABI_H__ */
--- /dev/null
+/*
+ * $Id: mtd-user.h,v 1.2 2004/05/05 14:44:57 dwmw2 Exp $
+ *
+ * MTD ABI header for use by user space only.
+ */
+
+#ifndef __MTD_USER_H__
+#define __MTD_USER_H__
+
+#include <stdint.h>
+
+/* This file is blessed for inclusion by userspace */
+#include <mtd/mtd-abi.h>
+
+typedef struct mtd_info_user mtd_info_t;
+typedef struct erase_info_user erase_info_t;
+typedef struct region_info_user region_info_t;
+typedef struct nand_oobinfo nand_oobinfo_t;
+
+#endif /* __MTD_USER_H__ */
--- /dev/null
+/*
+ * $Id: nftl-user.h,v 1.1 2004/05/05 14:44:57 dwmw2 Exp $
+ *
+ * Parts of NFTL headers shared with userspace
+ *
+ */
+
+#ifndef __MTD_NFTL_USER_H__
+#define __MTD_NFTL_USER_H__
+
+/* Block Control Information */
+
+struct nftl_bci {
+ unsigned char ECCSig[6];
+ uint8_t Status;
+ uint8_t Status1;
+}__attribute__((packed));
+
+/* Unit Control Information */
+
+struct nftl_uci0 {
+ uint16_t VirtUnitNum;
+ uint16_t ReplUnitNum;
+ uint16_t SpareVirtUnitNum;
+ uint16_t SpareReplUnitNum;
+} __attribute__((packed));
+
+struct nftl_uci1 {
+ uint32_t WearInfo;
+ uint16_t EraseMark;
+ uint16_t EraseMark1;
+} __attribute__((packed));
+
+struct nftl_uci2 {
+ uint16_t FoldMark;
+ uint16_t FoldMark1;
+ uint32_t unused;
+} __attribute__((packed));
+
+union nftl_uci {
+ struct nftl_uci0 a;
+ struct nftl_uci1 b;
+ struct nftl_uci2 c;
+};
+
+struct nftl_oob {
+ struct nftl_bci b;
+ union nftl_uci u;
+};
+
+/* NFTL Media Header */
+
+struct NFTLMediaHeader {
+ char DataOrgID[6];
+ uint16_t NumEraseUnits;
+ uint16_t FirstPhysicalEUN;
+ uint32_t FormattedSize;
+ unsigned char UnitSizeFactor;
+} __attribute__((packed));
+
+#define MAX_ERASE_ZONES (8192 - 512)
+
+#define ERASE_MARK 0x3c69
+#define SECTOR_FREE 0xff
+#define SECTOR_USED 0x55
+#define SECTOR_IGNORE 0x11
+#define SECTOR_DELETED 0x00
+
+#define FOLD_MARK_IN_PROGRESS 0x5555
+
+#define ZONE_GOOD 0xff
+#define ZONE_BAD_ORIGINAL 0
+#define ZONE_BAD_MARKED 7
+
+
+#endif /* __MTD_NFTL_USER_H__ */
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