* Copyright (C) 2005-2007 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
+ * Credits:
+ * Adrian Hunter <ext-adrian.hunter@nokia.com>:
+ * auto-placement support, read-while load support, various fixes
+ * Copyright (C) Nokia Corporation, 2007
+ *
+ * Rohit Hagargundgi <h.rohit at samsung.com>,
+ * Amul Kumar Saha <amul.saha@samsung.com>:
+ * Flex-OneNAND support
+ * Copyright (C) Samsung Electronics, 2009
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <common.h>
-
-#ifdef CONFIG_CMD_ONENAND
-
#include <linux/mtd/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
#include <asm/io.h>
#include <asm/errno.h>
+#include <malloc.h>
+
+/* It should access 16-bit instead of 8-bit */
+static void *memcpy_16(void *dst, const void *src, unsigned int len)
+{
+ void *ret = dst;
+ short *d = dst;
+ const short *s = src;
+
+ len >>= 1;
+ while (len-- > 0)
+ *d++ = *s++;
+ return ret;
+}
+
+/**
+ * onenand_oob_128 - oob info for Flex-Onenand with 4KB page
+ * For now, we expose only 64 out of 80 ecc bytes
+ */
+static struct nand_ecclayout onenand_oob_128 = {
+ .eccbytes = 64,
+ .eccpos = {
+ 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+ 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+ 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+ 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
+ 102, 103, 104, 105
+ },
+ .oobfree = {
+ {2, 4}, {18, 4}, {34, 4}, {50, 4},
+ {66, 4}, {82, 4}, {98, 4}, {114, 4}
+ }
+};
+
+/**
+ * onenand_oob_64 - oob info for large (2KB) page
+ */
+static struct nand_ecclayout onenand_oob_64 = {
+ .eccbytes = 20,
+ .eccpos = {
+ 8, 9, 10, 11, 12,
+ 24, 25, 26, 27, 28,
+ 40, 41, 42, 43, 44,
+ 56, 57, 58, 59, 60,
+ },
+ .oobfree = {
+ {2, 3}, {14, 2}, {18, 3}, {30, 2},
+ {34, 3}, {46, 2}, {50, 3}, {62, 2}
+ }
+};
+
+/**
+ * onenand_oob_32 - oob info for middle (1KB) page
+ */
+static struct nand_ecclayout onenand_oob_32 = {
+ .eccbytes = 10,
+ .eccpos = {
+ 8, 9, 10, 11, 12,
+ 24, 25, 26, 27, 28,
+ },
+ .oobfree = { {2, 3}, {14, 2}, {18, 3}, {30, 2} }
+};
static const unsigned char ffchars[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 48 */
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 64 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 80 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 96 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 112 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 128 */
};
/**
*
* Setup Start Address 1 Register (F100h)
*/
-static int onenand_block_address(int device, int block)
+static int onenand_block_address(struct onenand_chip *this, int block)
{
- if (device & ONENAND_DEVICE_IS_DDP) {
- /* Device Flash Core select, NAND Flash Block Address */
- int dfs = 0, density, mask;
-
- density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- mask = (1 << (density + 6));
-
- if (block & mask)
- dfs = 1;
-
- return (dfs << ONENAND_DDP_SHIFT) | (block & (mask - 1));
- }
+ /* Device Flash Core select, NAND Flash Block Address */
+ if (block & this->density_mask)
+ return ONENAND_DDP_CHIP1 | (block ^ this->density_mask);
return block;
}
*
* Setup Start Address 2 Register (F101h) for DDP
*/
-static int onenand_bufferram_address(int device, int block)
+static int onenand_bufferram_address(struct onenand_chip *this, int block)
{
- if (device & ONENAND_DEVICE_IS_DDP) {
- /* Device BufferRAM Select */
- int dbs = 0, density, mask;
-
- density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- mask = (1 << (density + 6));
+ /* Device BufferRAM Select */
+ if (block & this->density_mask)
+ return ONENAND_DDP_CHIP1;
- if (block & mask)
- dbs = 1;
-
- return (dbs << ONENAND_DDP_SHIFT);
- }
-
- return 0;
+ return ONENAND_DDP_CHIP0;
}
/**
return ((bsa << ONENAND_BSA_SHIFT) | bsc);
}
+/**
+ * flexonenand_block - Return block number for flash address
+ * @param this - OneNAND device structure
+ * @param addr - Address for which block number is needed
+ */
+static unsigned int flexonenand_block(struct onenand_chip *this, loff_t addr)
+{
+ unsigned int boundary, blk, die = 0;
+
+ if (ONENAND_IS_DDP(this) && addr >= this->diesize[0]) {
+ die = 1;
+ addr -= this->diesize[0];
+ }
+
+ boundary = this->boundary[die];
+
+ blk = addr >> (this->erase_shift - 1);
+ if (blk > boundary)
+ blk = (blk + boundary + 1) >> 1;
+
+ blk += die ? this->density_mask : 0;
+ return blk;
+}
+
+unsigned int onenand_block(struct onenand_chip *this, loff_t addr)
+{
+ if (!FLEXONENAND(this))
+ return addr >> this->erase_shift;
+ return flexonenand_block(this, addr);
+}
+
+/**
+ * flexonenand_addr - Return address of the block
+ * @this: OneNAND device structure
+ * @block: Block number on Flex-OneNAND
+ *
+ * Return address of the block
+ */
+static loff_t flexonenand_addr(struct onenand_chip *this, int block)
+{
+ loff_t ofs = 0;
+ int die = 0, boundary;
+
+ if (ONENAND_IS_DDP(this) && block >= this->density_mask) {
+ block -= this->density_mask;
+ die = 1;
+ ofs = this->diesize[0];
+ }
+
+ boundary = this->boundary[die];
+ ofs += (loff_t) block << (this->erase_shift - 1);
+ if (block > (boundary + 1))
+ ofs += (loff_t) (block - boundary - 1)
+ << (this->erase_shift - 1);
+ return ofs;
+}
+
+loff_t onenand_addr(struct onenand_chip *this, int block)
+{
+ if (!FLEXONENAND(this))
+ return (loff_t) block << this->erase_shift;
+ return flexonenand_addr(this, block);
+}
+
+/**
+ * flexonenand_region - [Flex-OneNAND] Return erase region of addr
+ * @param mtd MTD device structure
+ * @param addr address whose erase region needs to be identified
+ */
+int flexonenand_region(struct mtd_info *mtd, loff_t addr)
+{
+ int i;
+
+ for (i = 0; i < mtd->numeraseregions; i++)
+ if (addr < mtd->eraseregions[i].offset)
+ break;
+ return i - 1;
+}
+
+/**
+ * onenand_get_density - [DEFAULT] Get OneNAND density
+ * @param dev_id OneNAND device ID
+ *
+ * Get OneNAND density from device ID
+ */
+static inline int onenand_get_density(int dev_id)
+{
+ int density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ return (density & ONENAND_DEVICE_DENSITY_MASK);
+}
+
/**
* onenand_command - [DEFAULT] Send command to OneNAND device
* @param mtd MTD device structure
size_t len)
{
struct onenand_chip *this = mtd->priv;
- int value, readcmd = 0;
+ int value;
int block, page;
+
/* Now we use page size operation */
- int sectors = 4, count = 4;
+ int sectors = 0, count = 0;
/* Address translation */
switch (cmd) {
case ONENAND_CMD_UNLOCK:
case ONENAND_CMD_LOCK:
case ONENAND_CMD_LOCK_TIGHT:
+ case ONENAND_CMD_UNLOCK_ALL:
block = -1;
page = -1;
break;
+ case FLEXONENAND_CMD_PI_ACCESS:
+ /* addr contains die index */
+ block = addr * this->density_mask;
+ page = -1;
+ break;
+
case ONENAND_CMD_ERASE:
case ONENAND_CMD_BUFFERRAM:
- block = (int)(addr >> this->erase_shift);
+ block = onenand_block(this, addr);
page = -1;
break;
+ case FLEXONENAND_CMD_READ_PI:
+ cmd = ONENAND_CMD_READ;
+ block = addr * this->density_mask;
+ page = 0;
+ break;
+
default:
- block = (int)(addr >> this->erase_shift);
- page = (int)(addr >> this->page_shift);
+ block = onenand_block(this, addr);
+ page = (int) (addr
+ - onenand_addr(this, block)) >> this->page_shift;
page &= this->page_mask;
break;
}
/* NOTE: The setting order of the registers is very important! */
if (cmd == ONENAND_CMD_BUFFERRAM) {
/* Select DataRAM for DDP */
- value = onenand_bufferram_address(this->device_id, block);
+ value = onenand_bufferram_address(this, block);
this->write_word(value,
this->base + ONENAND_REG_START_ADDRESS2);
- /* Switch to the next data buffer */
- ONENAND_SET_NEXT_BUFFERRAM(this);
+ if (ONENAND_IS_MLC(this))
+ ONENAND_SET_BUFFERRAM0(this);
+ else
+ /* Switch to the next data buffer */
+ ONENAND_SET_NEXT_BUFFERRAM(this);
return 0;
}
if (block != -1) {
/* Write 'DFS, FBA' of Flash */
- value = onenand_block_address(this->device_id, block);
+ value = onenand_block_address(this, block);
this->write_word(value,
this->base + ONENAND_REG_START_ADDRESS1);
+
+ /* Select DataRAM for DDP */
+ value = onenand_bufferram_address(this, block);
+ this->write_word(value,
+ this->base + ONENAND_REG_START_ADDRESS2);
}
if (page != -1) {
int dataram;
switch (cmd) {
+ case FLEXONENAND_CMD_RECOVER_LSB:
case ONENAND_CMD_READ:
case ONENAND_CMD_READOOB:
- dataram = ONENAND_SET_NEXT_BUFFERRAM(this);
- readcmd = 1;
+ if (ONENAND_IS_MLC(this))
+ dataram = ONENAND_SET_BUFFERRAM0(this);
+ else
+ dataram = ONENAND_SET_NEXT_BUFFERRAM(this);
+
break;
default:
/* Write 'BSA, BSC' of DataRAM */
value = onenand_buffer_address(dataram, sectors, count);
this->write_word(value, this->base + ONENAND_REG_START_BUFFER);
-
- if (readcmd) {
- /* Select DataRAM for DDP */
- value =
- onenand_bufferram_address(this->device_id, block);
- this->write_word(value,
- this->base +
- ONENAND_REG_START_ADDRESS2);
- }
}
/* Interrupt clear */
return 0;
}
+/**
+ * onenand_read_ecc - return ecc status
+ * @param this onenand chip structure
+ */
+static int onenand_read_ecc(struct onenand_chip *this)
+{
+ int ecc, i;
+
+ if (!FLEXONENAND(this))
+ return this->read_word(this->base + ONENAND_REG_ECC_STATUS);
+
+ for (i = 0; i < 4; i++) {
+ ecc = this->read_word(this->base
+ + ((ONENAND_REG_ECC_STATUS + i) << 1));
+ if (likely(!ecc))
+ continue;
+ if (ecc & FLEXONENAND_UNCORRECTABLE_ERROR)
+ return ONENAND_ECC_2BIT_ALL;
+ }
+
+ return 0;
+}
+
/**
* onenand_wait - [DEFAULT] wait until the command is done
* @param mtd MTD device structure
struct onenand_chip *this = mtd->priv;
unsigned int flags = ONENAND_INT_MASTER;
unsigned int interrupt = 0;
- unsigned int ctrl, ecc;
+ unsigned int ctrl;
while (1) {
interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
- if (ctrl & ONENAND_CTRL_ERROR) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_wait: controller error = 0x%04x\n", ctrl);
- return -EAGAIN;
- }
-
- if (ctrl & ONENAND_CTRL_LOCK) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_wait: it's locked error = 0x%04x\n", ctrl);
- return -EIO;
- }
-
if (interrupt & ONENAND_INT_READ) {
- ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS);
+ int ecc = onenand_read_ecc(this);
if (ecc & ONENAND_ECC_2BIT_ALL) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_wait: ECC error = 0x%04x\n", ecc);
+ printk("onenand_wait: ECC error = 0x%04x\n", ecc);
return -EBADMSG;
}
}
+ if (ctrl & ONENAND_CTRL_ERROR) {
+ printk("onenand_wait: controller error = 0x%04x\n", ctrl);
+ if (ctrl & ONENAND_CTRL_LOCK)
+ printk("onenand_wait: it's locked error = 0x%04x\n",
+ ctrl);
+
+ return -EIO;
+ }
+
+
return 0;
}
if (ONENAND_CURRENT_BUFFERRAM(this)) {
if (area == ONENAND_DATARAM)
- return mtd->oobblock;
+ return mtd->writesize;
if (area == ONENAND_SPARERAM)
return mtd->oobsize;
}
*
* Read the BufferRAM area
*/
-static int onenand_read_bufferram(struct mtd_info *mtd, int area,
+static int onenand_read_bufferram(struct mtd_info *mtd, loff_t addr, int area,
unsigned char *buffer, int offset,
size_t count)
{
bufferram = this->base + area;
bufferram += onenand_bufferram_offset(mtd, area);
- memcpy(buffer, bufferram + offset, count);
+ memcpy_16(buffer, bufferram + offset, count);
return 0;
}
*
* Read the BufferRAM area with Sync. Burst Mode
*/
-static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area,
+static int onenand_sync_read_bufferram(struct mtd_info *mtd, loff_t addr, int area,
unsigned char *buffer, int offset,
size_t count)
{
this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ);
- memcpy(buffer, bufferram + offset, count);
+ memcpy_16(buffer, bufferram + offset, count);
this->mmcontrol(mtd, 0);
*
* Write the BufferRAM area
*/
-static int onenand_write_bufferram(struct mtd_info *mtd, int area,
+static int onenand_write_bufferram(struct mtd_info *mtd, loff_t addr, int area,
const unsigned char *buffer, int offset,
size_t count)
{
bufferram = this->base + area;
bufferram += onenand_bufferram_offset(mtd, area);
- memcpy(bufferram + offset, buffer, count);
+ memcpy_16(bufferram + offset, buffer, count);
return 0;
}
+/**
+ * onenand_get_2x_blockpage - [GENERIC] Get blockpage at 2x program mode
+ * @param mtd MTD data structure
+ * @param addr address to check
+ * @return blockpage address
+ *
+ * Get blockpage address at 2x program mode
+ */
+static int onenand_get_2x_blockpage(struct mtd_info *mtd, loff_t addr)
+{
+ struct onenand_chip *this = mtd->priv;
+ int blockpage, block, page;
+
+ /* Calculate the even block number */
+ block = (int) (addr >> this->erase_shift) & ~1;
+ /* Is it the odd plane? */
+ if (addr & this->writesize)
+ block++;
+ page = (int) (addr >> (this->page_shift + 1)) & this->page_mask;
+ blockpage = (block << 7) | page;
+
+ return blockpage;
+}
+
/**
* onenand_check_bufferram - [GENERIC] Check BufferRAM information
* @param mtd MTD data structure
static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr)
{
struct onenand_chip *this = mtd->priv;
- int block, page;
- int i;
+ int blockpage, found = 0;
+ unsigned int i;
+
+#ifdef CONFIG_S3C64XX
+ return 0;
+#endif
- block = (int)(addr >> this->erase_shift);
- page = (int)(addr >> this->page_shift);
- page &= this->page_mask;
+ if (ONENAND_IS_2PLANE(this))
+ blockpage = onenand_get_2x_blockpage(mtd, addr);
+ else
+ blockpage = (int) (addr >> this->page_shift);
+ /* Is there valid data? */
i = ONENAND_CURRENT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage)
+ found = 1;
+ else {
+ /* Check another BufferRAM */
+ i = ONENAND_NEXT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage) {
+ ONENAND_SET_NEXT_BUFFERRAM(this);
+ found = 1;
+ }
+ }
- /* Is there valid data? */
- if (this->bufferram[i].block == block &&
- this->bufferram[i].page == page && this->bufferram[i].valid)
- return 1;
+ if (found && ONENAND_IS_DDP(this)) {
+ /* Select DataRAM for DDP */
+ int block = onenand_block(this, addr);
+ int value = onenand_bufferram_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+ }
- return 0;
+ return found;
}
/**
int valid)
{
struct onenand_chip *this = mtd->priv;
- int block, page;
- int i;
+ int blockpage;
+ unsigned int i;
- block = (int)(addr >> this->erase_shift);
- page = (int)(addr >> this->page_shift);
- page &= this->page_mask;
+ if (ONENAND_IS_2PLANE(this))
+ blockpage = onenand_get_2x_blockpage(mtd, addr);
+ else
+ blockpage = (int)(addr >> this->page_shift);
- /* Invalidate BufferRAM */
- for (i = 0; i < MAX_BUFFERRAM; i++) {
- if (this->bufferram[i].block == block &&
- this->bufferram[i].page == page)
- this->bufferram[i].valid = 0;
- }
+ /* Invalidate another BufferRAM */
+ i = ONENAND_NEXT_BUFFERRAM(this);
+ if (this->bufferram[i].blockpage == blockpage)
+ this->bufferram[i].blockpage = -1;
/* Update BufferRAM */
i = ONENAND_CURRENT_BUFFERRAM(this);
- this->bufferram[i].block = block;
- this->bufferram[i].page = page;
- this->bufferram[i].valid = valid;
+ if (valid)
+ this->bufferram[i].blockpage = blockpage;
+ else
+ this->bufferram[i].blockpage = -1;
return 0;
}
+/**
+ * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information
+ * @param mtd MTD data structure
+ * @param addr start address to invalidate
+ * @param len length to invalidate
+ *
+ * Invalidate BufferRAM information
+ */
+static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr,
+ unsigned int len)
+{
+ struct onenand_chip *this = mtd->priv;
+ int i;
+ loff_t end_addr = addr + len;
+
+ /* Invalidate BufferRAM */
+ for (i = 0; i < MAX_BUFFERRAM; i++) {
+ loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift;
+
+ if (buf_addr >= addr && buf_addr < end_addr)
+ this->bufferram[i].blockpage = -1;
+ }
+}
+
/**
* onenand_get_device - [GENERIC] Get chip for selected access
* @param mtd MTD device structure
}
/**
- * onenand_read_ecc - [MTD Interface] Read data with ECC
+ * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer
+ * @param mtd MTD device structure
+ * @param buf destination address
+ * @param column oob offset to read from
+ * @param thislen oob length to read
+ */
+static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf,
+ int column, int thislen)
+{
+ struct onenand_chip *this = mtd->priv;
+ struct nand_oobfree *free;
+ int readcol = column;
+ int readend = column + thislen;
+ int lastgap = 0;
+ unsigned int i;
+ uint8_t *oob_buf = this->oob_buf;
+
+ free = this->ecclayout->oobfree;
+ for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
+ if (readcol >= lastgap)
+ readcol += free->offset - lastgap;
+ if (readend >= lastgap)
+ readend += free->offset - lastgap;
+ lastgap = free->offset + free->length;
+ }
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
+ free = this->ecclayout->oobfree;
+ for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
+ int free_end = free->offset + free->length;
+ if (free->offset < readend && free_end > readcol) {
+ int st = max_t(int,free->offset,readcol);
+ int ed = min_t(int,free_end,readend);
+ int n = ed - st;
+ memcpy(buf, oob_buf + st, n);
+ buf += n;
+ } else if (column == 0)
+ break;
+ }
+ return 0;
+}
+
+/**
+ * onenand_recover_lsb - [Flex-OneNAND] Recover LSB page data
+ * @param mtd MTD device structure
+ * @param addr address to recover
+ * @param status return value from onenand_wait
+ *
+ * MLC NAND Flash cell has paired pages - LSB page and MSB page. LSB page has
+ * lower page address and MSB page has higher page address in paired pages.
+ * If power off occurs during MSB page program, the paired LSB page data can
+ * become corrupt. LSB page recovery read is a way to read LSB page though page
+ * data are corrupted. When uncorrectable error occurs as a result of LSB page
+ * read after power up, issue LSB page recovery read.
+ */
+static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status)
+{
+ struct onenand_chip *this = mtd->priv;
+ int i;
+
+ /* Recovery is only for Flex-OneNAND */
+ if (!FLEXONENAND(this))
+ return status;
+
+ /* check if we failed due to uncorrectable error */
+ if (status != -EBADMSG && status != ONENAND_BBT_READ_ECC_ERROR)
+ return status;
+
+ /* check if address lies in MLC region */
+ i = flexonenand_region(mtd, addr);
+ if (mtd->eraseregions[i].erasesize < (1 << this->erase_shift))
+ return status;
+
+ printk("onenand_recover_lsb:"
+ "Attempting to recover from uncorrectable read\n");
+
+ /* Issue the LSB page recovery command */
+ this->command(mtd, FLEXONENAND_CMD_RECOVER_LSB, addr, this->writesize);
+ return this->wait(mtd, FL_READING);
+}
+
+/**
+ * onenand_read_ops_nolock - [OneNAND Interface] OneNAND read main and/or out-of-band
* @param mtd MTD device structure
* @param from offset to read from
- * @param len number of bytes to read
- * @param retlen pointer to variable to store the number of read bytes
- * @param buf the databuffer to put data
- * @param oob_buf filesystem supplied oob data buffer
- * @param oobsel oob selection structure
+ * @param ops oob operation description structure
*
- * OneNAND read with ECC
+ * OneNAND read main and/or out-of-band data
*/
-static int onenand_read_ecc(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf,
- u_char * oob_buf, struct nand_oobinfo *oobsel)
+static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
{
struct onenand_chip *this = mtd->priv;
- int read = 0, column;
- int thislen;
- int ret = 0;
+ struct mtd_ecc_stats stats;
+ size_t len = ops->len;
+ size_t ooblen = ops->ooblen;
+ u_char *buf = ops->datbuf;
+ u_char *oobbuf = ops->oobbuf;
+ int read = 0, column, thislen;
+ int oobread = 0, oobcolumn, thisooblen, oobsize;
+ int ret = 0, boundary = 0;
+ int writesize = this->writesize;
+
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+
+ if (ops->mode == MTD_OOB_AUTO)
+ oobsize = this->ecclayout->oobavail;
+ else
+ oobsize = mtd->oobsize;
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ecc: from = 0x%08x, len = %i\n",
- (unsigned int)from, (int)len);
+ oobcolumn = from & (mtd->oobsize - 1);
/* Do not allow reads past end of device */
if ((from + len) > mtd->size) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_read_ecc: Attempt read beyond end of device\n");
- *retlen = 0;
+ printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n");
+ ops->retlen = 0;
+ ops->oobretlen = 0;
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- onenand_get_device(mtd, FL_READING);
-
- while (read < len) {
- thislen = min_t(int, mtd->oobblock, len - read);
+ stats = mtd->ecc_stats;
- column = from & (mtd->oobblock - 1);
- if (column + thislen > mtd->oobblock)
- thislen = mtd->oobblock - column;
+ /* Read-while-load method */
+ /* Note: We can't use this feature in MLC */
+ /* Do first load to bufferRAM */
+ if (read < len) {
if (!onenand_check_bufferram(mtd, from)) {
- this->command(mtd, ONENAND_CMD_READ, from,
- mtd->oobblock);
+ this->main_buf = buf;
+ this->command(mtd, ONENAND_CMD_READ, from, writesize);
ret = this->wait(mtd, FL_READING);
- /* First copy data and check return value for ECC handling */
- onenand_update_bufferram(mtd, from, 1);
+ if (unlikely(ret))
+ ret = onenand_recover_lsb(mtd, from, ret);
+ onenand_update_bufferram(mtd, from, !ret);
+ if (ret == -EBADMSG)
+ ret = 0;
+ }
+ }
+
+ thislen = min_t(int, writesize, len - read);
+ column = from & (writesize - 1);
+ if (column + thislen > writesize)
+ thislen = writesize - column;
+
+ while (!ret) {
+ /* If there is more to load then start next load */
+ from += thislen;
+ if (!ONENAND_IS_MLC(this) && read + thislen < len) {
+ this->main_buf = buf + thislen;
+ this->command(mtd, ONENAND_CMD_READ, from, writesize);
+ /*
+ * Chip boundary handling in DDP
+ * Now we issued chip 1 read and pointed chip 1
+ * bufferam so we have to point chip 0 bufferam.
+ */
+ if (ONENAND_IS_DDP(this) &&
+ unlikely(from == (this->chipsize >> 1))) {
+ this->write_word(ONENAND_DDP_CHIP0, this->base + ONENAND_REG_START_ADDRESS2);
+ boundary = 1;
+ } else
+ boundary = 0;
+ ONENAND_SET_PREV_BUFFERRAM(this);
+ }
+
+ /* While load is going, read from last bufferRAM */
+ this->read_bufferram(mtd, from - thislen, ONENAND_DATARAM, buf, column, thislen);
+
+ /* Read oob area if needed */
+ if (oobbuf) {
+ thisooblen = oobsize - oobcolumn;
+ thisooblen = min_t(int, thisooblen, ooblen - oobread);
+
+ if (ops->mode == MTD_OOB_AUTO)
+ onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen);
+ else
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen);
+ oobread += thisooblen;
+ oobbuf += thisooblen;
+ oobcolumn = 0;
}
- this->read_bufferram(mtd, ONENAND_DATARAM, buf, column,
- thislen);
+ if (ONENAND_IS_MLC(this) && (read + thislen < len)) {
+ this->command(mtd, ONENAND_CMD_READ, from, writesize);
+ ret = this->wait(mtd, FL_READING);
+ if (unlikely(ret))
+ ret = onenand_recover_lsb(mtd, from, ret);
+ onenand_update_bufferram(mtd, from, !ret);
+ if (ret == -EBADMSG)
+ ret = 0;
+ }
+ /* See if we are done */
read += thislen;
if (read == len)
break;
+ /* Set up for next read from bufferRAM */
+ if (unlikely(boundary))
+ this->write_word(ONENAND_DDP_CHIP1, this->base + ONENAND_REG_START_ADDRESS2);
+ if (!ONENAND_IS_MLC(this))
+ ONENAND_SET_NEXT_BUFFERRAM(this);
+ buf += thislen;
+ thislen = min_t(int, writesize, len - read);
+ column = 0;
- if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_read_ecc: read failed = %d\n", ret);
- break;
+ if (!ONENAND_IS_MLC(this)) {
+ /* Now wait for load */
+ ret = this->wait(mtd, FL_READING);
+ onenand_update_bufferram(mtd, from, !ret);
+ if (ret == -EBADMSG)
+ ret = 0;
}
-
- from += thislen;
- buf += thislen;
}
- /* Deselect and wake up anyone waiting on the device */
- onenand_release_device(mtd);
-
/*
* Return success, if no ECC failures, else -EBADMSG
* fs driver will take care of that, because
* retlen == desired len and result == -EBADMSG
*/
- *retlen = read;
- return ret;
-}
+ ops->retlen = read;
+ ops->oobretlen = oobread;
-/**
- * onenand_read - [MTD Interface] MTD compability function for onenand_read_ecc
- * @param mtd MTD device structure
- * @param from offset to read from
- * @param len number of bytes to read
- * @param retlen pointer to variable to store the number of read bytes
- * @param buf the databuffer to put data
- *
- * This function simply calls onenand_read_ecc with oob buffer and oobsel = NULL
-*/
-int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf)
-{
- return onenand_read_ecc(mtd, from, len, retlen, buf, NULL, NULL);
+ if (ret)
+ return ret;
+
+ if (mtd->ecc_stats.failed - stats.failed)
+ return -EBADMSG;
+
+ return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0;
}
/**
- * onenand_read_oob - [MTD Interface] OneNAND read out-of-band
+ * onenand_read_oob_nolock - [MTD Interface] OneNAND read out-of-band
* @param mtd MTD device structure
* @param from offset to read from
- * @param len number of bytes to read
- * @param retlen pointer to variable to store the number of read bytes
- * @param buf the databuffer to put data
+ * @param ops oob operation description structure
*
* OneNAND read out-of-band data from the spare area
*/
-int onenand_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
- size_t * retlen, u_char * buf)
+static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
{
struct onenand_chip *this = mtd->priv;
- int read = 0, thislen, column;
- int ret = 0;
+ struct mtd_ecc_stats stats;
+ int read = 0, thislen, column, oobsize;
+ size_t len = ops->ooblen;
+ mtd_oob_mode_t mode = ops->mode;
+ u_char *buf = ops->oobbuf;
+ int ret = 0, readcmd;
+
+ from += ops->ooboffs;
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob: from = 0x%08x, len = %i\n",
- (unsigned int)from, (int)len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
/* Initialize return length value */
- *retlen = 0;
+ ops->oobretlen = 0;
+
+ if (mode == MTD_OOB_AUTO)
+ oobsize = this->ecclayout->oobavail;
+ else
+ oobsize = mtd->oobsize;
+
+ column = from & (mtd->oobsize - 1);
+
+ if (unlikely(column >= oobsize)) {
+ printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n");
+ return -EINVAL;
+ }
/* Do not allow reads past end of device */
- if (unlikely((from + len) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_read_oob: Attempt read beyond end of device\n");
+ if (unlikely(from >= mtd->size ||
+ column + len > ((mtd->size >> this->page_shift) -
+ (from >> this->page_shift)) * oobsize)) {
+ printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n");
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- onenand_get_device(mtd, FL_READING);
+ stats = mtd->ecc_stats;
- column = from & (mtd->oobsize - 1);
+ readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB;
while (read < len) {
- thislen = mtd->oobsize - column;
+ thislen = oobsize - column;
thislen = min_t(int, thislen, len);
- this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize);
+ this->spare_buf = buf;
+ this->command(mtd, readcmd, from, mtd->oobsize);
onenand_update_bufferram(mtd, from, 0);
ret = this->wait(mtd, FL_READING);
- /* First copy data and check return value for ECC handling */
+ if (unlikely(ret))
+ ret = onenand_recover_lsb(mtd, from, ret);
- this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column,
- thislen);
+ if (ret && ret != -EBADMSG) {
+ printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret);
+ break;
+ }
+
+ if (mode == MTD_OOB_AUTO)
+ onenand_transfer_auto_oob(mtd, buf, column, thislen);
+ else
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
read += thislen;
+
if (read == len)
break;
- if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_read_oob: read failed = %d\n", ret);
+ buf += thislen;
+
+ /* Read more? */
+ if (read < len) {
+ /* Page size */
+ from += mtd->writesize;
+ column = 0;
+ }
+ }
+
+ ops->oobretlen = read;
+
+ if (ret)
+ return ret;
+
+ if (mtd->ecc_stats.failed - stats.failed)
+ return -EBADMSG;
+
+ return 0;
+}
+
+/**
+ * onenand_read - [MTD Interface] MTD compability function for onenand_read_ecc
+ * @param mtd MTD device structure
+ * @param from offset to read from
+ * @param len number of bytes to read
+ * @param retlen pointer to variable to store the number of read bytes
+ * @param buf the databuffer to put data
+ *
+ * This function simply calls onenand_read_ecc with oob buffer and oobsel = NULL
+*/
+int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t * retlen, u_char * buf)
+{
+ struct mtd_oob_ops ops = {
+ .len = len,
+ .ooblen = 0,
+ .datbuf = buf,
+ .oobbuf = NULL,
+ };
+ int ret;
+
+ onenand_get_device(mtd, FL_READING);
+ ret = onenand_read_ops_nolock(mtd, from, &ops);
+ onenand_release_device(mtd);
+
+ *retlen = ops.retlen;
+ return ret;
+}
+
+/**
+ * onenand_read_oob - [MTD Interface] OneNAND read out-of-band
+ * @param mtd MTD device structure
+ * @param from offset to read from
+ * @param ops oob operations description structure
+ *
+ * OneNAND main and/or out-of-band
+ */
+int onenand_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ int ret;
+
+ switch (ops->mode) {
+ case MTD_OOB_PLACE:
+ case MTD_OOB_AUTO:
+ break;
+ case MTD_OOB_RAW:
+ /* Not implemented yet */
+ default:
+ return -EINVAL;
+ }
+
+ onenand_get_device(mtd, FL_READING);
+ if (ops->datbuf)
+ ret = onenand_read_ops_nolock(mtd, from, ops);
+ else
+ ret = onenand_read_oob_nolock(mtd, from, ops);
+ onenand_release_device(mtd);
+
+ return ret;
+}
+
+/**
+ * onenand_bbt_wait - [DEFAULT] wait until the command is done
+ * @param mtd MTD device structure
+ * @param state state to select the max. timeout value
+ *
+ * Wait for command done.
+ */
+static int onenand_bbt_wait(struct mtd_info *mtd, int state)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int flags = ONENAND_INT_MASTER;
+ unsigned int interrupt;
+ unsigned int ctrl;
+
+ while (1) {
+ interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
+ if (interrupt & flags)
break;
+ }
+
+ /* To get correct interrupt status in timeout case */
+ interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT);
+ ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
+
+ if (interrupt & ONENAND_INT_READ) {
+ int ecc = onenand_read_ecc(this);
+ if (ecc & ONENAND_ECC_2BIT_ALL) {
+ printk(KERN_INFO "onenand_bbt_wait: ecc error = 0x%04x"
+ ", controller = 0x%04x\n", ecc, ctrl);
+ return ONENAND_BBT_READ_ERROR;
}
+ } else {
+ printk(KERN_ERR "onenand_bbt_wait: read timeout!"
+ "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+ return ONENAND_BBT_READ_FATAL_ERROR;
+ }
+
+ /* Initial bad block case: 0x2400 or 0x0400 */
+ if (ctrl & ONENAND_CTRL_ERROR) {
+ printk(KERN_DEBUG "onenand_bbt_wait: controller error = 0x%04x\n", ctrl);
+ return ONENAND_BBT_READ_ERROR;
+ }
+
+ return 0;
+}
+
+/**
+ * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan
+ * @param mtd MTD device structure
+ * @param from offset to read from
+ * @param ops oob operation description structure
+ *
+ * OneNAND read out-of-band data from the spare area for bbt scan
+ */
+int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops)
+{
+ struct onenand_chip *this = mtd->priv;
+ int read = 0, thislen, column;
+ int ret = 0, readcmd;
+ size_t len = ops->ooblen;
+ u_char *buf = ops->oobbuf;
+
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len);
+
+ readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB;
+
+ /* Initialize return value */
+ ops->oobretlen = 0;
+
+ /* Do not allow reads past end of device */
+ if (unlikely((from + len) > mtd->size)) {
+ printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n");
+ return ONENAND_BBT_READ_FATAL_ERROR;
+ }
+
+ /* Grab the lock and see if the device is available */
+ onenand_get_device(mtd, FL_READING);
+
+ column = from & (mtd->oobsize - 1);
+
+ while (read < len) {
+
+ thislen = mtd->oobsize - column;
+ thislen = min_t(int, thislen, len);
+
+ this->spare_buf = buf;
+ this->command(mtd, readcmd, from, mtd->oobsize);
+
+ onenand_update_bufferram(mtd, from, 0);
+
+ ret = this->bbt_wait(mtd, FL_READING);
+ if (unlikely(ret))
+ ret = onenand_recover_lsb(mtd, from, ret);
+
+ if (ret)
+ break;
+
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, buf, column, thislen);
+ read += thislen;
+ if (read == len)
+ break;
buf += thislen;
+
/* Read more? */
if (read < len) {
- /* Page size */
- from += mtd->oobblock;
+ /* Update Page size */
+ from += this->writesize;
column = 0;
}
}
/* Deselect and wake up anyone waiting on the device */
onenand_release_device(mtd);
- *retlen = read;
+ ops->oobretlen = read;
return ret;
}
+
#ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE
/**
- * onenand_verify_page - [GENERIC] verify the chip contents after a write
- * @param mtd MTD device structure
- * @param buf the databuffer to verify
- * @param block block address
- * @param page page address
- *
- * Check DataRAM area directly
+ * onenand_verify_oob - [GENERIC] verify the oob contents after a write
+ * @param mtd MTD device structure
+ * @param buf the databuffer to verify
+ * @param to offset to read from
+ */
+static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to)
+{
+ struct onenand_chip *this = mtd->priv;
+ u_char *oob_buf = this->oob_buf;
+ int status, i, readcmd;
+
+ readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB;
+
+ this->command(mtd, readcmd, to, mtd->oobsize);
+ onenand_update_bufferram(mtd, to, 0);
+ status = this->wait(mtd, FL_READING);
+ if (status)
+ return status;
+
+ this->read_bufferram(mtd, 0, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize);
+ for (i = 0; i < mtd->oobsize; i++)
+ if (buf[i] != 0xFF && buf[i] != oob_buf[i])
+ return -EBADMSG;
+
+ return 0;
+}
+
+/**
+ * onenand_verify - [GENERIC] verify the chip contents after a write
+ * @param mtd MTD device structure
+ * @param buf the databuffer to verify
+ * @param addr offset to read from
+ * @param len number of bytes to read and compare
*/
-static int onenand_verify_page(struct mtd_info *mtd, u_char * buf,
- loff_t addr, int block, int page)
+static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len)
{
struct onenand_chip *this = mtd->priv;
- void __iomem *dataram0, *dataram1;
+ void __iomem *dataram;
int ret = 0;
+ int thislen, column;
- this->command(mtd, ONENAND_CMD_READ, addr, mtd->oobblock);
+ while (len != 0) {
+ thislen = min_t(int, this->writesize, len);
+ column = addr & (this->writesize - 1);
+ if (column + thislen > this->writesize)
+ thislen = this->writesize - column;
- ret = this->wait(mtd, FL_READING);
- if (ret)
- return ret;
+ this->command(mtd, ONENAND_CMD_READ, addr, this->writesize);
- onenand_update_bufferram(mtd, addr, 1);
+ onenand_update_bufferram(mtd, addr, 0);
- /* Check, if the two dataram areas are same */
- dataram0 = this->base + ONENAND_DATARAM;
- dataram1 = dataram0 + mtd->oobblock;
+ ret = this->wait(mtd, FL_READING);
+ if (ret)
+ return ret;
- if (memcmp(dataram0, dataram1, mtd->oobblock))
- return -EBADMSG;
+ onenand_update_bufferram(mtd, addr, 1);
+
+ dataram = this->base + ONENAND_DATARAM;
+ dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM);
+
+ if (memcmp(buf, dataram + column, thislen))
+ return -EBADMSG;
+
+ len -= thislen;
+ buf += thislen;
+ addr += thislen;
+ }
return 0;
}
#else
-#define onenand_verify_page(...) (0)
+#define onenand_verify(...) (0)
+#define onenand_verify_oob(...) (0)
#endif
-#define NOTALIGNED(x) ((x & (mtd->oobblock - 1)) != 0)
+#define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0)
/**
- * onenand_write_ecc - [MTD Interface] OneNAND write with ECC
- * @param mtd MTD device structure
- * @param to offset to write to
- * @param len number of bytes to write
- * @param retlen pointer to variable to store the number of written bytes
- * @param buf the data to write
- * @param eccbuf filesystem supplied oob data buffer
- * @param oobsel oob selection structure
+ * onenand_fill_auto_oob - [Internal] oob auto-placement transfer
+ * @param mtd MTD device structure
+ * @param oob_buf oob buffer
+ * @param buf source address
+ * @param column oob offset to write to
+ * @param thislen oob length to write
+ */
+static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf,
+ const u_char *buf, int column, int thislen)
+{
+ struct onenand_chip *this = mtd->priv;
+ struct nand_oobfree *free;
+ int writecol = column;
+ int writeend = column + thislen;
+ int lastgap = 0;
+ unsigned int i;
+
+ free = this->ecclayout->oobfree;
+ for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
+ if (writecol >= lastgap)
+ writecol += free->offset - lastgap;
+ if (writeend >= lastgap)
+ writeend += free->offset - lastgap;
+ lastgap = free->offset + free->length;
+ }
+ free = this->ecclayout->oobfree;
+ for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) {
+ int free_end = free->offset + free->length;
+ if (free->offset < writeend && free_end > writecol) {
+ int st = max_t(int,free->offset,writecol);
+ int ed = min_t(int,free_end,writeend);
+ int n = ed - st;
+ memcpy(oob_buf + st, buf, n);
+ buf += n;
+ } else if (column == 0)
+ break;
+ }
+ return 0;
+}
+
+/**
+ * onenand_write_ops_nolock - [OneNAND Interface] write main and/or out-of-band
+ * @param mtd MTD device structure
+ * @param to offset to write to
+ * @param ops oob operation description structure
*
- * OneNAND write with ECC
+ * Write main and/or oob with ECC
*/
-static int onenand_write_ecc(struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf,
- u_char * eccbuf, struct nand_oobinfo *oobsel)
+static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
{
struct onenand_chip *this = mtd->priv;
- int written = 0;
+ int written = 0, column, thislen, subpage;
+ int oobwritten = 0, oobcolumn, thisooblen, oobsize;
+ size_t len = ops->len;
+ size_t ooblen = ops->ooblen;
+ const u_char *buf = ops->datbuf;
+ const u_char *oob = ops->oobbuf;
+ u_char *oobbuf;
int ret = 0;
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ecc: to = 0x%08x, len = %i\n",
- (unsigned int)to, (int)len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
/* Initialize retlen, in case of early exit */
- *retlen = 0;
+ ops->retlen = 0;
+ ops->oobretlen = 0;
/* Do not allow writes past end of device */
if (unlikely((to + len) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_write_ecc: Attempt write to past end of device\n");
+ printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n");
return -EINVAL;
}
/* Reject writes, which are not page aligned */
- if (unlikely(NOTALIGNED(to)) || unlikely(NOTALIGNED(len))) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_write_ecc: Attempt to write not page aligned data\n");
+ if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
+ printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n");
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- onenand_get_device(mtd, FL_WRITING);
+ if (ops->mode == MTD_OOB_AUTO)
+ oobsize = this->ecclayout->oobavail;
+ else
+ oobsize = mtd->oobsize;
+
+ oobcolumn = to & (mtd->oobsize - 1);
+
+ column = to & (mtd->writesize - 1);
/* Loop until all data write */
while (written < len) {
- int thislen = min_t(int, mtd->oobblock, len - written);
+ u_char *wbuf = (u_char *) buf;
+
+ thislen = min_t(int, mtd->writesize - column, len - written);
+ thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten);
+
+ this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen);
+
+ /* Partial page write */
+ subpage = thislen < mtd->writesize;
+ if (subpage) {
+ memset(this->page_buf, 0xff, mtd->writesize);
+ memcpy(this->page_buf + column, buf, thislen);
+ wbuf = this->page_buf;
+ }
+
+ this->write_bufferram(mtd, to, ONENAND_DATARAM, wbuf, 0, mtd->writesize);
- this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobblock);
+ if (oob) {
+ oobbuf = this->oob_buf;
- this->write_bufferram(mtd, ONENAND_DATARAM, buf, 0, thislen);
- this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0,
- mtd->oobsize);
+ /* We send data to spare ram with oobsize
+ * * to prevent byte access */
+ memset(oobbuf, 0xff, mtd->oobsize);
+ if (ops->mode == MTD_OOB_AUTO)
+ onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen);
+ else
+ memcpy(oobbuf + oobcolumn, oob, thisooblen);
- this->command(mtd, ONENAND_CMD_PROG, to, mtd->oobblock);
+ oobwritten += thisooblen;
+ oob += thisooblen;
+ oobcolumn = 0;
+ } else
+ oobbuf = (u_char *) ffchars;
- onenand_update_bufferram(mtd, to, 1);
+ this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
+
+ this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize);
ret = this->wait(mtd, FL_WRITING);
+
+ /* In partial page write we don't update bufferram */
+ onenand_update_bufferram(mtd, to, !ret && !subpage);
+ if (ONENAND_IS_2PLANE(this)) {
+ ONENAND_SET_BUFFERRAM1(this);
+ onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage);
+ }
+
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_write_ecc: write filaed %d\n", ret);
+ printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret);
break;
}
- written += thislen;
-
/* Only check verify write turn on */
- ret = onenand_verify_page(mtd, (u_char *) buf, to, block, page);
+ ret = onenand_verify(mtd, buf, to, thislen);
if (ret) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_write_ecc: verify failed %d\n", ret);
+ printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret);
break;
}
+ written += thislen;
+
if (written == len)
break;
+ column = 0;
to += thislen;
buf += thislen;
}
- /* Deselect and wake up anyone waiting on the device */
- onenand_release_device(mtd);
-
- *retlen = written;
+ ops->retlen = written;
return ret;
}
/**
- * onenand_write - [MTD Interface] compability function for onenand_write_ecc
- * @param mtd MTD device structure
- * @param to offset to write to
- * @param len number of bytes to write
- * @param retlen pointer to variable to store the number of written bytes
- * @param buf the data to write
- *
- * This function simply calls onenand_write_ecc
- * with oob buffer and oobsel = NULL
- */
-int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf)
-{
- return onenand_write_ecc(mtd, to, len, retlen, buf, NULL, NULL);
-}
-
-/**
- * onenand_write_oob - [MTD Interface] OneNAND write out-of-band
- * @param mtd MTD device structure
- * @param to offset to write to
- * @param len number of bytes to write
- * @param retlen pointer to variable to store the number of written bytes
- * @param buf the data to write
+ * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band
+ * @param mtd MTD device structure
+ * @param to offset to write to
+ * @param len number of bytes to write
+ * @param retlen pointer to variable to store the number of written bytes
+ * @param buf the data to write
+ * @param mode operation mode
*
* OneNAND write out-of-band
*/
-int onenand_write_oob(struct mtd_info *mtd, loff_t to, size_t len,
- size_t * retlen, const u_char * buf)
+static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
{
struct onenand_chip *this = mtd->priv;
- int column, status;
- int written = 0;
+ int column, ret = 0, oobsize;
+ int written = 0, oobcmd;
+ u_char *oobbuf;
+ size_t len = ops->ooblen;
+ const u_char *buf = ops->oobbuf;
+ mtd_oob_mode_t mode = ops->mode;
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n",
- (unsigned int)to, (int)len);
+ to += ops->ooboffs;
+
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
/* Initialize retlen, in case of early exit */
- *retlen = 0;
+ ops->oobretlen = 0;
- /* Do not allow writes past end of device */
- if (unlikely((to + len) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_write_oob: Attempt write to past end of device\n");
+ if (mode == MTD_OOB_AUTO)
+ oobsize = this->ecclayout->oobavail;
+ else
+ oobsize = mtd->oobsize;
+
+ column = to & (mtd->oobsize - 1);
+
+ if (unlikely(column >= oobsize)) {
+ printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n");
return -EINVAL;
}
- /* Grab the lock and see if the device is available */
- onenand_get_device(mtd, FL_WRITING);
+ /* For compatibility with NAND: Do not allow write past end of page */
+ if (unlikely(column + len > oobsize)) {
+ printk(KERN_ERR "onenand_write_oob_nolock: "
+ "Attempt to write past end of page\n");
+ return -EINVAL;
+ }
+
+ /* Do not allow reads past end of device */
+ if (unlikely(to >= mtd->size ||
+ column + len > ((mtd->size >> this->page_shift) -
+ (to >> this->page_shift)) * oobsize)) {
+ printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n");
+ return -EINVAL;
+ }
+
+ oobbuf = this->oob_buf;
+
+ oobcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_PROG : ONENAND_CMD_PROGOOB;
/* Loop until all data write */
while (written < len) {
- int thislen = min_t(int, mtd->oobsize, len - written);
-
- column = to & (mtd->oobsize - 1);
+ int thislen = min_t(int, oobsize, len - written);
this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize);
- this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0,
- mtd->oobsize);
- this->write_bufferram(mtd, ONENAND_SPARERAM, buf, column,
- thislen);
+ /* We send data to spare ram with oobsize
+ * to prevent byte access */
+ memset(oobbuf, 0xff, mtd->oobsize);
+ if (mode == MTD_OOB_AUTO)
+ onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen);
+ else
+ memcpy(oobbuf + column, buf, thislen);
+ this->write_bufferram(mtd, 0, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize);
+
+ if (ONENAND_IS_MLC(this)) {
+ /* Set main area of DataRAM to 0xff*/
+ memset(this->page_buf, 0xff, mtd->writesize);
+ this->write_bufferram(mtd, 0, ONENAND_DATARAM,
+ this->page_buf, 0, mtd->writesize);
+ }
- this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize);
+ this->command(mtd, oobcmd, to, mtd->oobsize);
onenand_update_bufferram(mtd, to, 0);
+ if (ONENAND_IS_2PLANE(this)) {
+ ONENAND_SET_BUFFERRAM1(this);
+ onenand_update_bufferram(mtd, to + this->writesize, 0);
+ }
+
+ ret = this->wait(mtd, FL_WRITING);
+ if (ret) {
+ printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret);
+ break;
+ }
- status = this->wait(mtd, FL_WRITING);
- if (status)
+ ret = onenand_verify_oob(mtd, oobbuf, to);
+ if (ret) {
+ printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret);
break;
+ }
written += thislen;
if (written == len)
break;
- to += thislen;
+ to += mtd->writesize;
buf += thislen;
+ column = 0;
}
- /* Deselect and wake up anyone waiting on the device */
+ ops->oobretlen = written;
+
+ return ret;
+}
+
+/**
+ * onenand_write - [MTD Interface] compability function for onenand_write_ecc
+ * @param mtd MTD device structure
+ * @param to offset to write to
+ * @param len number of bytes to write
+ * @param retlen pointer to variable to store the number of written bytes
+ * @param buf the data to write
+ *
+ * Write with ECC
+ */
+int onenand_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t * retlen, const u_char * buf)
+{
+ struct mtd_oob_ops ops = {
+ .len = len,
+ .ooblen = 0,
+ .datbuf = (u_char *) buf,
+ .oobbuf = NULL,
+ };
+ int ret;
+
+ onenand_get_device(mtd, FL_WRITING);
+ ret = onenand_write_ops_nolock(mtd, to, &ops);
onenand_release_device(mtd);
- *retlen = written;
+ *retlen = ops.retlen;
+ return ret;
+}
+
+/**
+ * onenand_write_oob - [MTD Interface] OneNAND write out-of-band
+ * @param mtd MTD device structure
+ * @param to offset to write to
+ * @param ops oob operation description structure
+ *
+ * OneNAND write main and/or out-of-band
+ */
+int onenand_write_oob(struct mtd_info *mtd, loff_t to,
+ struct mtd_oob_ops *ops)
+{
+ int ret;
+
+ switch (ops->mode) {
+ case MTD_OOB_PLACE:
+ case MTD_OOB_AUTO:
+ break;
+ case MTD_OOB_RAW:
+ /* Not implemented yet */
+ default:
+ return -EINVAL;
+ }
+
+ onenand_get_device(mtd, FL_WRITING);
+ if (ops->datbuf)
+ ret = onenand_write_ops_nolock(mtd, to, ops);
+ else
+ ret = onenand_write_oob_nolock(mtd, to, ops);
+ onenand_release_device(mtd);
+
+ return ret;
- return 0;
}
+/**
+ * onenand_block_isbad_nolock - [GENERIC] Check if a block is marked bad
+ * @param mtd MTD device structure
+ * @param ofs offset from device start
+ * @param allowbbt 1, if its allowed to access the bbt area
+ *
+ * Check, if the block is bad, Either by reading the bad block table or
+ * calling of the scan function.
+ */
+static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allowbbt)
+{
+ struct onenand_chip *this = mtd->priv;
+ struct bbm_info *bbm = this->bbm;
+
+ /* Return info from the table */
+ return bbm->isbad_bbt(mtd, ofs, allowbbt);
+}
+
+
/**
* onenand_erase - [MTD Interface] erase block(s)
* @param mtd MTD device structure
{
struct onenand_chip *this = mtd->priv;
unsigned int block_size;
- loff_t addr;
- int len;
- int ret = 0;
+ loff_t addr = instr->addr;
+ unsigned int len = instr->len;
+ int ret = 0, i;
+ struct mtd_erase_region_info *region = NULL;
+ unsigned int region_end = 0;
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%08x, len = %i\n",
- (unsigned int)instr->addr, (unsigned int)instr->len);
+ MTDDEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%08x, len = %i\n",
+ (unsigned int) addr, len);
- block_size = (1 << this->erase_shift);
-
- /* Start address must align on block boundary */
- if (unlikely(instr->addr & (block_size - 1))) {
- DEBUG(MTD_DEBUG_LEVEL0, "onenand_erase: Unaligned address\n");
+ /* Do not allow erase past end of device */
+ if (unlikely((len + addr) > mtd->size)) {
+ MTDDEBUG(MTD_DEBUG_LEVEL0, "onenand_erase:"
+ "Erase past end of device\n");
return -EINVAL;
}
- /* Length must align on block boundary */
- if (unlikely(instr->len & (block_size - 1))) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_erase: Length not block aligned\n");
- return -EINVAL;
+ if (FLEXONENAND(this)) {
+ /* Find the eraseregion of this address */
+ i = flexonenand_region(mtd, addr);
+ region = &mtd->eraseregions[i];
+
+ block_size = region->erasesize;
+ region_end = region->offset
+ + region->erasesize * region->numblocks;
+
+ /* Start address within region must align on block boundary.
+ * Erase region's start offset is always block start address.
+ */
+ if (unlikely((addr - region->offset) & (block_size - 1))) {
+ MTDDEBUG(MTD_DEBUG_LEVEL0, "onenand_erase:"
+ " Unaligned address\n");
+ return -EINVAL;
+ }
+ } else {
+ block_size = 1 << this->erase_shift;
+
+ /* Start address must align on block boundary */
+ if (unlikely(addr & (block_size - 1))) {
+ MTDDEBUG(MTD_DEBUG_LEVEL0, "onenand_erase:"
+ "Unaligned address\n");
+ return -EINVAL;
+ }
}
- /* Do not allow erase past end of device */
- if (unlikely((instr->len + instr->addr) > mtd->size)) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_erase: Erase past end of device\n");
+ /* Length must align on block boundary */
+ if (unlikely(len & (block_size - 1))) {
+ MTDDEBUG (MTD_DEBUG_LEVEL0,
+ "onenand_erase: Length not block aligned\n");
return -EINVAL;
}
onenand_get_device(mtd, FL_ERASING);
/* Loop throught the pages */
- len = instr->len;
- addr = instr->addr;
-
instr->state = MTD_ERASING;
while (len) {
- /* TODO Check badblock */
+ /* Check if we have a bad block, we do not erase bad blocks */
+ if (instr->priv == 0 && onenand_block_isbad_nolock(mtd, addr, 0)) {
+ printk(KERN_WARNING "onenand_erase: attempt to erase"
+ " a bad block at addr 0x%08x\n",
+ (unsigned int) addr);
+ instr->state = MTD_ERASE_FAILED;
+ goto erase_exit;
+ }
this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
+ onenand_invalidate_bufferram(mtd, addr, block_size);
+
ret = this->wait(mtd, FL_ERASING);
/* Check, if it is write protected */
if (ret) {
if (ret == -EPERM)
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_erase: Device is write protected!!!\n");
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "onenand_erase: "
+ "Device is write protected!!!\n");
else
- DEBUG(MTD_DEBUG_LEVEL0,
- "onenand_erase: Failed erase, block %d\n",
- (unsigned)(addr >> this->erase_shift));
+ MTDDEBUG (MTD_DEBUG_LEVEL0, "onenand_erase: "
+ "Failed erase, block %d\n",
+ onenand_block(this, addr));
instr->state = MTD_ERASE_FAILED;
instr->fail_addr = addr;
+
goto erase_exit;
}
len -= block_size;
addr += block_size;
+
+ if (addr == region_end) {
+ if (!len)
+ break;
+ region++;
+
+ block_size = region->erasesize;
+ region_end = region->offset
+ + region->erasesize * region->numblocks;
+
+ if (len & (block_size - 1)) {
+ /* This has been checked at MTD
+ * partitioning level. */
+ printk("onenand_erase: Unaligned address\n");
+ goto erase_exit;
+ }
+ }
}
instr->state = MTD_ERASE_DONE;
- erase_exit:
+erase_exit:
ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
/* Do call back function */
*/
void onenand_sync(struct mtd_info *mtd)
{
- DEBUG(MTD_DEBUG_LEVEL3, "onenand_sync: called\n");
+ MTDDEBUG (MTD_DEBUG_LEVEL3, "onenand_sync: called\n");
/* Grab the lock and see if the device is available */
onenand_get_device(mtd, FL_SYNCING);
* onenand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad
* @param mtd MTD device structure
* @param ofs offset relative to mtd start
+ *
+ * Check whether the block is bad
*/
int onenand_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
- /*
- * TODO
- * 1. Bad block table (BBT)
- * -> using NAND BBT to support JFFS2
- * 2. Bad block management (BBM)
- * -> bad block replace scheme
- *
- * Currently we do nothing
- */
- return 0;
+ int ret;
+
+ /* Check for invalid offset */
+ if (ofs > mtd->size)
+ return -EINVAL;
+
+ onenand_get_device(mtd, FL_READING);
+ ret = onenand_block_isbad_nolock(mtd,ofs, 0);
+ onenand_release_device(mtd);
+ return ret;
+}
+
+/**
+ * onenand_default_block_markbad - [DEFAULT] mark a block bad
+ * @param mtd MTD device structure
+ * @param ofs offset from device start
+ *
+ * This is the default implementation, which can be overridden by
+ * a hardware specific driver.
+ */
+static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
+{
+ struct onenand_chip *this = mtd->priv;
+ struct bbm_info *bbm = this->bbm;
+ u_char buf[2] = {0, 0};
+ struct mtd_oob_ops ops = {
+ .mode = MTD_OOB_PLACE,
+ .ooblen = 2,
+ .oobbuf = buf,
+ .ooboffs = 0,
+ };
+ int block;
+
+ /* Get block number */
+ block = onenand_block(this, ofs);
+ if (bbm->bbt)
+ bbm->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
+
+ /* We write two bytes, so we dont have to mess with 16 bit access */
+ ofs += mtd->oobsize + (bbm->badblockpos & ~0x01);
+ return onenand_write_oob_nolock(mtd, ofs, &ops);
}
/**
* onenand_block_markbad - [MTD Interface] Mark the block at the given offset as bad
* @param mtd MTD device structure
* @param ofs offset relative to mtd start
+ *
+ * Mark the block as bad
*/
int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
- /* see above */
- return 0;
+ struct onenand_chip *this = mtd->priv;
+ int ret;
+
+ ret = onenand_block_isbad(mtd, ofs);
+ if (ret) {
+ /* If it was bad already, return success and do nothing */
+ if (ret > 0)
+ return 0;
+ return ret;
+ }
+
+ ret = this->block_markbad(mtd, ofs);
+ return ret;
}
/**
- * onenand_unlock - [MTD Interface] Unlock block(s)
- * @param mtd MTD device structure
- * @param ofs offset relative to mtd start
- * @param len number of bytes to unlock
+ * onenand_do_lock_cmd - [OneNAND Interface] Lock or unlock block(s)
+ * @param mtd MTD device structure
+ * @param ofs offset relative to mtd start
+ * @param len number of bytes to lock or unlock
+ * @param cmd lock or unlock command
*
- * Unlock one or more blocks
+ * Lock or unlock one or more blocks
*/
-int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int cmd)
{
struct onenand_chip *this = mtd->priv;
int start, end, block, value, status;
+ int wp_status_mask;
+
+ start = onenand_block(this, ofs);
+ end = onenand_block(this, ofs + len);
- start = ofs >> this->erase_shift;
- end = len >> this->erase_shift;
+ if (cmd == ONENAND_CMD_LOCK)
+ wp_status_mask = ONENAND_WP_LS;
+ else
+ wp_status_mask = ONENAND_WP_US;
/* Continuous lock scheme */
- if (this->options & ONENAND_CONT_LOCK) {
+ if (this->options & ONENAND_HAS_CONT_LOCK) {
/* Set start block address */
this->write_word(start,
this->base + ONENAND_REG_START_BLOCK_ADDRESS);
this->write_word(end - 1,
this->base + ONENAND_REG_END_BLOCK_ADDRESS);
/* Write unlock command */
- this->command(mtd, ONENAND_CMD_UNLOCK, 0, 0);
+ this->command(mtd, cmd, 0, 0);
/* There's no return value */
this->wait(mtd, FL_UNLOCKING);
/* Block lock scheme */
for (block = start; block < end; block++) {
+ /* Set block address */
+ value = onenand_block_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
+ /* Select DataRAM for DDP */
+ value = onenand_bufferram_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+
/* Set start block address */
this->write_word(block,
this->base + ONENAND_REG_START_BLOCK_ADDRESS);
& ONENAND_CTRL_ONGO)
continue;
- /* Set block address for read block status */
- value = onenand_block_address(this->device_id, block);
- this->write_word(value,
- this->base + ONENAND_REG_START_ADDRESS1);
-
/* Check lock status */
status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
if (!(status & ONENAND_WP_US))
return 0;
}
+#ifdef ONENAND_LINUX
+/**
+ * onenand_lock - [MTD Interface] Lock block(s)
+ * @param mtd MTD device structure
+ * @param ofs offset relative to mtd start
+ * @param len number of bytes to unlock
+ *
+ * Lock one or more blocks
+ */
+static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ int ret;
+
+ onenand_get_device(mtd, FL_LOCKING);
+ ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK);
+ onenand_release_device(mtd);
+ return ret;
+}
+
+/**
+ * onenand_unlock - [MTD Interface] Unlock block(s)
+ * @param mtd MTD device structure
+ * @param ofs offset relative to mtd start
+ * @param len number of bytes to unlock
+ *
+ * Unlock one or more blocks
+ */
+static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+ int ret;
+
+ onenand_get_device(mtd, FL_LOCKING);
+ ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+ onenand_release_device(mtd);
+ return ret;
+}
+#endif
+
+/**
+ * onenand_check_lock_status - [OneNAND Interface] Check lock status
+ * @param this onenand chip data structure
+ *
+ * Check lock status
+ */
+static int onenand_check_lock_status(struct onenand_chip *this)
+{
+ unsigned int value, block, status;
+ unsigned int end;
+
+ end = this->chipsize >> this->erase_shift;
+ for (block = 0; block < end; block++) {
+ /* Set block address */
+ value = onenand_block_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1);
+ /* Select DataRAM for DDP */
+ value = onenand_bufferram_address(this, block);
+ this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2);
+ /* Set start block address */
+ this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
+
+ /* Check lock status */
+ status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
+ if (!(status & ONENAND_WP_US)) {
+ printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+/**
+ * onenand_unlock_all - [OneNAND Interface] unlock all blocks
+ * @param mtd MTD device structure
+ *
+ * Unlock all blocks
+ */
+static void onenand_unlock_all(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ loff_t ofs = 0;
+ size_t len = mtd->size;
+
+ if (this->options & ONENAND_HAS_UNLOCK_ALL) {
+ /* Set start block address */
+ this->write_word(0, this->base + ONENAND_REG_START_BLOCK_ADDRESS);
+ /* Write unlock command */
+ this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0);
+
+ /* There's no return value */
+ this->wait(mtd, FL_LOCKING);
+
+ /* Sanity check */
+ while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS)
+ & ONENAND_CTRL_ONGO)
+ continue;
+
+ /* Check lock status */
+ if (onenand_check_lock_status(this))
+ return;
+
+ /* Workaround for all block unlock in DDP */
+ if (ONENAND_IS_DDP(this) && !FLEXONENAND(this)) {
+ /* All blocks on another chip */
+ ofs = this->chipsize >> 1;
+ len = this->chipsize >> 1;
+ }
+ }
+
+ onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK);
+}
+
+
+/**
+ * onenand_check_features - Check and set OneNAND features
+ * @param mtd MTD data structure
+ *
+ * Check and set OneNAND features
+ * - lock scheme
+ * - two plane
+ */
+static void onenand_check_features(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int density, process;
+
+ /* Lock scheme depends on density and process */
+ density = onenand_get_density(this->device_id);
+ process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT;
+
+ /* Lock scheme */
+ switch (density) {
+ case ONENAND_DEVICE_DENSITY_4Gb:
+ this->options |= ONENAND_HAS_2PLANE;
+
+ case ONENAND_DEVICE_DENSITY_2Gb:
+ /* 2Gb DDP don't have 2 plane */
+ if (!ONENAND_IS_DDP(this))
+ this->options |= ONENAND_HAS_2PLANE;
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+
+ case ONENAND_DEVICE_DENSITY_1Gb:
+ /* A-Die has all block unlock */
+ if (process)
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+ break;
+
+ default:
+ /* Some OneNAND has continuous lock scheme */
+ if (!process)
+ this->options |= ONENAND_HAS_CONT_LOCK;
+ break;
+ }
+
+ if (ONENAND_IS_MLC(this))
+ this->options &= ~ONENAND_HAS_2PLANE;
+
+ if (FLEXONENAND(this)) {
+ this->options &= ~ONENAND_HAS_CONT_LOCK;
+ this->options |= ONENAND_HAS_UNLOCK_ALL;
+ }
+
+ if (this->options & ONENAND_HAS_CONT_LOCK)
+ printk(KERN_DEBUG "Lock scheme is Continuous Lock\n");
+ if (this->options & ONENAND_HAS_UNLOCK_ALL)
+ printk(KERN_DEBUG "Chip support all block unlock\n");
+ if (this->options & ONENAND_HAS_2PLANE)
+ printk(KERN_DEBUG "Chip has 2 plane\n");
+}
+
/**
* onenand_print_device_info - Print device ID
* @param device device ID
*
* Print device ID
*/
-void onenand_print_device_info(int device, int verbose)
+char *onenand_print_device_info(int device, int version)
{
- int vcc, demuxed, ddp, density;
-
- if (!verbose)
- return;
+ int vcc, demuxed, ddp, density, flexonenand;
+ char *dev_info = malloc(80);
+ char *p = dev_info;
vcc = device & ONENAND_DEVICE_VCC_MASK;
demuxed = device & ONENAND_DEVICE_IS_DEMUX;
ddp = device & ONENAND_DEVICE_IS_DDP;
- density = device >> ONENAND_DEVICE_DENSITY_SHIFT;
- printk(KERN_INFO "%sOneNAND%s %dMB %sV 16-bit (0x%02x)\n",
+ density = onenand_get_density(device);
+ flexonenand = device & DEVICE_IS_FLEXONENAND;
+ p += sprintf(dev_info, "%s%sOneNAND%s %dMB %sV 16-bit (0x%02x)",
demuxed ? "" : "Muxed ",
+ flexonenand ? "Flex-" : "",
ddp ? "(DDP)" : "",
(16 << density), vcc ? "2.65/3.3" : "1.8", device);
+
+ sprintf(p, "\nOneNAND version = 0x%04x", version);
+ printk("%s\n", dev_info);
+
+ return dev_info;
}
static const struct onenand_manufacturers onenand_manuf_ids[] = {
{ONENAND_MFR_SAMSUNG, "Samsung"},
- {ONENAND_MFR_UNKNOWN, "Unknown"}
};
/**
*/
static int onenand_check_maf(int manuf)
{
+ int size = ARRAY_SIZE(onenand_manuf_ids);
+ char *name;
int i;
- for (i = 0; onenand_manuf_ids[i].id; i++) {
+ for (i = 0; i < size; i++)
if (manuf == onenand_manuf_ids[i].id)
break;
- }
+
+ if (i < size)
+ name = onenand_manuf_ids[i].name;
+ else
+ name = "Unknown";
#ifdef ONENAND_DEBUG
- printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n",
- onenand_manuf_ids[i].name, manuf);
+ printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n", name, manuf);
#endif
- return (i != ONENAND_MFR_UNKNOWN);
+ return i == size;
+}
+
+/**
+* flexonenand_get_boundary - Reads the SLC boundary
+* @param onenand_info - onenand info structure
+*
+* Fill up boundary[] field in onenand_chip
+**/
+static int flexonenand_get_boundary(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ unsigned int die, bdry;
+ int ret, syscfg, locked;
+
+ /* Disable ECC */
+ syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1);
+ this->write_word((syscfg | 0x0100), this->base + ONENAND_REG_SYS_CFG1);
+
+ for (die = 0; die < this->dies; die++) {
+ this->command(mtd, FLEXONENAND_CMD_PI_ACCESS, die, 0);
+ this->wait(mtd, FL_SYNCING);
+
+ this->command(mtd, FLEXONENAND_CMD_READ_PI, die, 0);
+ ret = this->wait(mtd, FL_READING);
+
+ bdry = this->read_word(this->base + ONENAND_DATARAM);
+ if ((bdry >> FLEXONENAND_PI_UNLOCK_SHIFT) == 3)
+ locked = 0;
+ else
+ locked = 1;
+ this->boundary[die] = bdry & FLEXONENAND_PI_MASK;
+
+ this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+ ret = this->wait(mtd, FL_RESETING);
+
+ printk(KERN_INFO "Die %d boundary: %d%s\n", die,
+ this->boundary[die], locked ? "(Locked)" : "(Unlocked)");
+ }
+
+ /* Enable ECC */
+ this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1);
+ return 0;
+}
+
+/**
+ * flexonenand_get_size - Fill up fields in onenand_chip and mtd_info
+ * boundary[], diesize[], mtd->size, mtd->erasesize,
+ * mtd->eraseregions
+ * @param mtd - MTD device structure
+ */
+static void flexonenand_get_size(struct mtd_info *mtd)
+{
+ struct onenand_chip *this = mtd->priv;
+ int die, i, eraseshift, density;
+ int blksperdie, maxbdry;
+ loff_t ofs;
+
+ density = onenand_get_density(this->device_id);
+ blksperdie = ((loff_t)(16 << density) << 20) >> (this->erase_shift);
+ blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0;
+ maxbdry = blksperdie - 1;
+ eraseshift = this->erase_shift - 1;
+
+ mtd->numeraseregions = this->dies << 1;
+
+ /* This fills up the device boundary */
+ flexonenand_get_boundary(mtd);
+ die = 0;
+ ofs = 0;
+ i = -1;
+ for (; die < this->dies; die++) {
+ if (!die || this->boundary[die-1] != maxbdry) {
+ i++;
+ mtd->eraseregions[i].offset = ofs;
+ mtd->eraseregions[i].erasesize = 1 << eraseshift;
+ mtd->eraseregions[i].numblocks =
+ this->boundary[die] + 1;
+ ofs += mtd->eraseregions[i].numblocks << eraseshift;
+ eraseshift++;
+ } else {
+ mtd->numeraseregions -= 1;
+ mtd->eraseregions[i].numblocks +=
+ this->boundary[die] + 1;
+ ofs += (this->boundary[die] + 1) << (eraseshift - 1);
+ }
+ if (this->boundary[die] != maxbdry) {
+ i++;
+ mtd->eraseregions[i].offset = ofs;
+ mtd->eraseregions[i].erasesize = 1 << eraseshift;
+ mtd->eraseregions[i].numblocks = maxbdry ^
+ this->boundary[die];
+ ofs += mtd->eraseregions[i].numblocks << eraseshift;
+ eraseshift--;
+ } else
+ mtd->numeraseregions -= 1;
+ }
+
+ /* Expose MLC erase size except when all blocks are SLC */
+ mtd->erasesize = 1 << this->erase_shift;
+ if (mtd->numeraseregions == 1)
+ mtd->erasesize >>= 1;
+
+ printk(KERN_INFO "Device has %d eraseregions\n", mtd->numeraseregions);
+ for (i = 0; i < mtd->numeraseregions; i++)
+ printk(KERN_INFO "[offset: 0x%08llx, erasesize: 0x%05x,"
+ " numblocks: %04u]\n", mtd->eraseregions[i].offset,
+ mtd->eraseregions[i].erasesize,
+ mtd->eraseregions[i].numblocks);
+
+ for (die = 0, mtd->size = 0; die < this->dies; die++) {
+ this->diesize[die] = (loff_t) (blksperdie << this->erase_shift);
+ this->diesize[die] -= (loff_t) (this->boundary[die] + 1)
+ << (this->erase_shift - 1);
+ mtd->size += this->diesize[die];
+ }
+}
+
+/**
+ * flexonenand_check_blocks_erased - Check if blocks are erased
+ * @param mtd_info - mtd info structure
+ * @param start - first erase block to check
+ * @param end - last erase block to check
+ *
+ * Converting an unerased block from MLC to SLC
+ * causes byte values to change. Since both data and its ECC
+ * have changed, reads on the block give uncorrectable error.
+ * This might lead to the block being detected as bad.
+ *
+ * Avoid this by ensuring that the block to be converted is
+ * erased.
+ */
+static int flexonenand_check_blocks_erased(struct mtd_info *mtd,
+ int start, int end)
+{
+ struct onenand_chip *this = mtd->priv;
+ int i, ret;
+ int block;
+ struct mtd_oob_ops ops = {
+ .mode = MTD_OOB_PLACE,
+ .ooboffs = 0,
+ .ooblen = mtd->oobsize,
+ .datbuf = NULL,
+ .oobbuf = this->oob_buf,
+ };
+ loff_t addr;
+
+ printk(KERN_DEBUG "Check blocks from %d to %d\n", start, end);
+
+ for (block = start; block <= end; block++) {
+ addr = flexonenand_addr(this, block);
+ if (onenand_block_isbad_nolock(mtd, addr, 0))
+ continue;
+
+ /*
+ * Since main area write results in ECC write to spare,
+ * it is sufficient to check only ECC bytes for change.
+ */
+ ret = onenand_read_oob_nolock(mtd, addr, &ops);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < mtd->oobsize; i++)
+ if (this->oob_buf[i] != 0xff)
+ break;
+
+ if (i != mtd->oobsize) {
+ printk(KERN_WARNING "Block %d not erased.\n", block);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * flexonenand_set_boundary - Writes the SLC boundary
+ * @param mtd - mtd info structure
+ */
+int flexonenand_set_boundary(struct mtd_info *mtd, int die,
+ int boundary, int lock)
+{
+ struct onenand_chip *this = mtd->priv;
+ int ret, density, blksperdie, old, new, thisboundary;
+ loff_t addr;
+
+ if (die >= this->dies)
+ return -EINVAL;
+
+ if (boundary == this->boundary[die])
+ return 0;
+
+ density = onenand_get_density(this->device_id);
+ blksperdie = ((16 << density) << 20) >> this->erase_shift;
+ blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0;
+
+ if (boundary >= blksperdie) {
+ printk("flexonenand_set_boundary:"
+ "Invalid boundary value. "
+ "Boundary not changed.\n");
+ return -EINVAL;
+ }
+
+ /* Check if converting blocks are erased */
+ old = this->boundary[die] + (die * this->density_mask);
+ new = boundary + (die * this->density_mask);
+ ret = flexonenand_check_blocks_erased(mtd, min(old, new)
+ + 1, max(old, new));
+ if (ret) {
+ printk(KERN_ERR "flexonenand_set_boundary: Please erase blocks before boundary change\n");
+ return ret;
+ }
+
+ this->command(mtd, FLEXONENAND_CMD_PI_ACCESS, die, 0);
+ this->wait(mtd, FL_SYNCING);
+
+ /* Check is boundary is locked */
+ this->command(mtd, FLEXONENAND_CMD_READ_PI, die, 0);
+ ret = this->wait(mtd, FL_READING);
+
+ thisboundary = this->read_word(this->base + ONENAND_DATARAM);
+ if ((thisboundary >> FLEXONENAND_PI_UNLOCK_SHIFT) != 3) {
+ printk(KERN_ERR "flexonenand_set_boundary: boundary locked\n");
+ goto out;
+ }
+
+ printk(KERN_INFO "flexonenand_set_boundary: Changing die %d boundary: %d%s\n",
+ die, boundary, lock ? "(Locked)" : "(Unlocked)");
+
+ boundary &= FLEXONENAND_PI_MASK;
+ boundary |= lock ? 0 : (3 << FLEXONENAND_PI_UNLOCK_SHIFT);
+
+ addr = die ? this->diesize[0] : 0;
+ this->command(mtd, ONENAND_CMD_ERASE, addr, 0);
+ ret = this->wait(mtd, FL_ERASING);
+ if (ret) {
+ printk("flexonenand_set_boundary:"
+ "Failed PI erase for Die %d\n", die);
+ goto out;
+ }
+
+ this->write_word(boundary, this->base + ONENAND_DATARAM);
+ this->command(mtd, ONENAND_CMD_PROG, addr, 0);
+ ret = this->wait(mtd, FL_WRITING);
+ if (ret) {
+ printk("flexonenand_set_boundary:"
+ "Failed PI write for Die %d\n", die);
+ goto out;
+ }
+
+ this->command(mtd, FLEXONENAND_CMD_PI_UPDATE, die, 0);
+ ret = this->wait(mtd, FL_WRITING);
+out:
+ this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_REG_COMMAND);
+ this->wait(mtd, FL_RESETING);
+ if (!ret)
+ /* Recalculate device size on boundary change*/
+ flexonenand_get_size(mtd);
+
+ return ret;
}
/**
static int onenand_probe(struct mtd_info *mtd)
{
struct onenand_chip *this = mtd->priv;
- int bram_maf_id, bram_dev_id, maf_id, dev_id;
- int version_id;
+ int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id;
int density;
+ int syscfg;
+
+ /* Save system configuration 1 */
+ syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1);
+ /* Clear Sync. Burst Read mode to read BootRAM */
+ this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1);
/* Send the command for reading device ID from BootRAM */
this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM);
bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0);
bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2);
- /* Check manufacturer ID */
- if (onenand_check_maf(bram_maf_id))
- return -ENXIO;
-
/* Reset OneNAND to read default register values */
this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM);
- {
- int i;
- for (i = 0; i < 10000; i++) ;
- }
+ /* Wait reset */
+ this->wait(mtd, FL_RESETING);
+
+ /* Restore system configuration 1 */
+ this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1);
+
+ /* Check manufacturer ID */
+ if (onenand_check_maf(bram_maf_id))
+ return -ENXIO;
/* Read manufacturer and device IDs from Register */
maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID);
dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID);
+ ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID);
+ this->technology = this->read_word(this->base + ONENAND_REG_TECHNOLOGY);
/* Check OneNAND device */
if (maf_id != bram_maf_id || dev_id != bram_dev_id)
return -ENXIO;
/* Flash device information */
- onenand_print_device_info(dev_id, 0);
+ mtd->name = onenand_print_device_info(dev_id, ver_id);
this->device_id = dev_id;
+ this->version_id = ver_id;
+
+ density = onenand_get_density(dev_id);
+ if (FLEXONENAND(this)) {
+ this->dies = ONENAND_IS_DDP(this) ? 2 : 1;
+ /* Maximum possible erase regions */
+ mtd->numeraseregions = this->dies << 1;
+ mtd->eraseregions = malloc(sizeof(struct mtd_erase_region_info)
+ * (this->dies << 1));
+ if (!mtd->eraseregions)
+ return -ENOMEM;
+ }
- density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT;
+ /*
+ * For Flex-OneNAND, chipsize represents maximum possible device size.
+ * mtd->size represents the actual device size.
+ */
this->chipsize = (16 << density) << 20;
/* OneNAND page size & block size */
/* The data buffer size is equal to page size */
- mtd->oobblock =
+ mtd->writesize =
this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE);
- mtd->oobsize = mtd->oobblock >> 5;
+ /* We use the full BufferRAM */
+ if (ONENAND_IS_MLC(this))
+ mtd->writesize <<= 1;
+
+ mtd->oobsize = mtd->writesize >> 5;
/* Pagers per block is always 64 in OneNAND */
- mtd->erasesize = mtd->oobblock << 6;
+ mtd->erasesize = mtd->writesize << 6;
+ /*
+ * Flex-OneNAND SLC area has 64 pages per block.
+ * Flex-OneNAND MLC area has 128 pages per block.
+ * Expose MLC erase size to find erase_shift and page_mask.
+ */
+ if (FLEXONENAND(this))
+ mtd->erasesize <<= 1;
this->erase_shift = ffs(mtd->erasesize) - 1;
- this->page_shift = ffs(mtd->oobblock) - 1;
+ this->page_shift = ffs(mtd->writesize) - 1;
this->ppb_shift = (this->erase_shift - this->page_shift);
- this->page_mask = (mtd->erasesize / mtd->oobblock) - 1;
+ this->page_mask = (mtd->erasesize / mtd->writesize) - 1;
+ /* Set density mask. it is used for DDP */
+ if (ONENAND_IS_DDP(this))
+ this->density_mask = this->chipsize >> (this->erase_shift + 1);
+ /* It's real page size */
+ this->writesize = mtd->writesize;
/* REVIST: Multichip handling */
- mtd->size = this->chipsize;
+ if (FLEXONENAND(this))
+ flexonenand_get_size(mtd);
+ else
+ mtd->size = this->chipsize;
- /* Version ID */
- version_id = this->read_word(this->base + ONENAND_REG_VERSION_ID);
-#ifdef ONENAND_DEBUG
- printk(KERN_DEBUG "OneNAND version = 0x%04x\n", version_id);
-#endif
+ /* Check OneNAND features */
+ onenand_check_features(mtd);
- /* Lock scheme */
- if (density <= ONENAND_DEVICE_DENSITY_512Mb &&
- !(version_id >> ONENAND_VERSION_PROCESS_SHIFT)) {
- printk(KERN_INFO "Lock scheme is Continues Lock\n");
- this->options |= ONENAND_CONT_LOCK;
- }
+ mtd->flags = MTD_CAP_NANDFLASH;
+ mtd->erase = onenand_erase;
+ mtd->read = onenand_read;
+ mtd->write = onenand_write;
+ mtd->read_oob = onenand_read_oob;
+ mtd->write_oob = onenand_write_oob;
+ mtd->sync = onenand_sync;
+ mtd->block_isbad = onenand_block_isbad;
+ mtd->block_markbad = onenand_block_markbad;
return 0;
}
*/
int onenand_scan(struct mtd_info *mtd, int maxchips)
{
+ int i;
struct onenand_chip *this = mtd->priv;
if (!this->read_word)
this->command = onenand_command;
if (!this->wait)
this->wait = onenand_wait;
+ if (!this->bbt_wait)
+ this->bbt_wait = onenand_bbt_wait;
if (!this->read_bufferram)
this->read_bufferram = onenand_read_bufferram;
if (!this->write_bufferram)
this->write_bufferram = onenand_write_bufferram;
+ if (!this->block_markbad)
+ this->block_markbad = onenand_default_block_markbad;
+ if (!this->scan_bbt)
+ this->scan_bbt = onenand_default_bbt;
+
if (onenand_probe(mtd))
return -ENXIO;
this->read_bufferram = onenand_sync_read_bufferram;
}
- onenand_unlock(mtd, 0, mtd->size);
+ /* Allocate buffers, if necessary */
+ if (!this->page_buf) {
+ this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL);
+ if (!this->page_buf) {
+ printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n");
+ return -ENOMEM;
+ }
+ this->options |= ONENAND_PAGEBUF_ALLOC;
+ }
+ if (!this->oob_buf) {
+ this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL);
+ if (!this->oob_buf) {
+ printk(KERN_ERR "onenand_scan: Can't allocate oob_buf\n");
+ if (this->options & ONENAND_PAGEBUF_ALLOC) {
+ this->options &= ~ONENAND_PAGEBUF_ALLOC;
+ kfree(this->page_buf);
+ }
+ return -ENOMEM;
+ }
+ this->options |= ONENAND_OOBBUF_ALLOC;
+ }
+
+ this->state = FL_READY;
+
+ /*
+ * Allow subpage writes up to oobsize.
+ */
+ switch (mtd->oobsize) {
+ case 128:
+ this->ecclayout = &onenand_oob_128;
+ mtd->subpage_sft = 0;
+ break;
+
+ case 64:
+ this->ecclayout = &onenand_oob_64;
+ mtd->subpage_sft = 2;
+ break;
+
+ case 32:
+ this->ecclayout = &onenand_oob_32;
+ mtd->subpage_sft = 1;
+ break;
+
+ default:
+ printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n",
+ mtd->oobsize);
+ mtd->subpage_sft = 0;
+ /* To prevent kernel oops */
+ this->ecclayout = &onenand_oob_32;
+ break;
+ }
+
+ this->subpagesize = mtd->writesize >> mtd->subpage_sft;
+
+ /*
+ * The number of bytes available for a client to place data into
+ * the out of band area
+ */
+ this->ecclayout->oobavail = 0;
+ for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES &&
+ this->ecclayout->oobfree[i].length; i++)
+ this->ecclayout->oobavail +=
+ this->ecclayout->oobfree[i].length;
+ mtd->oobavail = this->ecclayout->oobavail;
+
+ mtd->ecclayout = this->ecclayout;
- return onenand_default_bbt(mtd);
+ /* Unlock whole block */
+ onenand_unlock_all(mtd);
+
+ return this->scan_bbt(mtd);
}
/**
void onenand_release(struct mtd_info *mtd)
{
}
-
-#endif /* CONFIG_CMD_ONENAND */
projects / u-boot / blobdiff