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SAMA5 NAND: Fix several bugs associated with PMECC data transfers

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This commit is contained in:
Gregory Nutt 2013-12-05 18:20:32 -06:00
parent d01808c603
commit 1b21322f06
1 changed files with 319 additions and 270 deletions
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589
arch/arm/src/sama5/sam_nand.c
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@ -219,24 +219,22 @@ static int nand_dma_write(struct sam_nandcs_s *priv,
/* Raw Data Transfer Helpers */
static int nand_nfcsram_read(uintptr_t src, uint8_t *dest,
size_t buflen);
static int nand_nfcsram_read(struct sam_nandcs_s *priv,
uint8_t *buffer, uint16_t buflen);
#ifdef CONFIG_SAMA5_HAVE_PMECC
static int nand_read(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen, uint16_t offset);
uint16_t buflen);
#endif
#ifdef CONFIG_SAMA5_HAVE_PMECC
static int nand_read_pmecc(struct sam_nandcs_s *priv, off_t block,
unsigned int page, void *data);
#endif
static int nand_nfcsram_write(const uint8_t *src, uintptr_t dest,
size_t buflen);
static int nand_smc_write8(const uint8_t *src, uintptr_t dest,
size_t buflen);
static int nand_smc_write16(const uint8_t *src, uintptr_t dest,
size_t buflen);
static int nand_write(struct sam_nandcs_s *priv, bool nfcsram,
uint8_t *buffer, size_t buflen, off_t offset);
static int nand_nfcsram_write(struct sam_nandcs_s *priv,
uint8_t *buffer, uint16_t buflen, uint16_t offset);
static int nand_write(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen, uint16_t offset);
/* NAND Access Helpers */
@ -1453,34 +1451,6 @@ static int nand_dma_write(struct sam_nandcs_s *priv,
* Name: nand_nfcsram_read
*
* Description:
* Read data from NAND using the NFC SRAM (without DMA)
*
* Input Parameters:
* src - NAND data source address
* dest - Buffer that will receive the data from the read
* buflen - The number of bytes to transfer
*
* Returned Value
* OK always
*
****************************************************************************/
static int nand_nfcsram_read(uintptr_t src, uint8_t *dest, size_t buflen)
{
uint8_t *src8 = (uint8_t *)src;
for (; buflen > 0; buflen--)
{
*dest++ = *src8++;
}
return OK;
}
/****************************************************************************
* Name: nand_read
*
* Description:
* Read data from NAND using the NFC SRAM
*
* Input Parameters:
@ -1495,28 +1465,13 @@ static int nand_nfcsram_read(uintptr_t src, uint8_t *dest, size_t buflen)
*
****************************************************************************/
static int nand_read(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen, uint16_t offset)
static int nand_nfcsram_read(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen)
{
uintptr_t src;
#ifdef CONFIG_SAMA5_NAND_DMA
uint32_t dmaflags;
#endif
int buswidth;
int remaining;
int ret;
fvdbg("buffer=%p buflen=%d offset=%d\n", buffer, buflen, offset);
/* Get the data source: NFC SRAM (perhaps with an offset)
* NOTE: We could use the address priv->raw.dataaddr if we want to
* bypass NFC SRAM.
*/
src = NFCSRAM_BASE + offset;
/* Get the buswidth */
buswidth = nandmodel_getbuswidth(&priv->raw.model);
fvdbg("buffer=%p buflen=%d\n", buffer, buflen);
#ifdef CONFIG_SAMA5_NAND_DMA
/* Then perform the transfer via memory-to-memory DMA or not, depending
@ -1527,13 +1482,19 @@ static int nand_read(struct sam_nandcs_s *priv, uint8_t *buffer,
if (priv->dma && buflen > CONFIG_SAMA5_NAND_DMA_THRESHOLD)
{
/* Get the buswidth */
int buswidth = nandmodel_getbuswidth(&priv->raw.model);
/* Select NFC SRAM DMA */
dmaflags = (buswidth == 16 ? NFCSRAM_DMA_FLAGS16 : NFCSRAM_DMA_FLAGS8);
uint32_t dmaflags =
(buswidth == 16 ? NFCSRAM_DMA_FLAGS16 : NFCSRAM_DMA_FLAGS8);
/* Transfer using DMA */
ret = nand_dma_read(priv, src, (uintptr_t)buffer, buflen, dmaflags);
ret = nand_dma_read(priv, NFCSRAM_BASE, (uintptr_t)buffer, buflen,
dmaflags);
}
else
#endif
@ -1541,12 +1502,110 @@ static int nand_read(struct sam_nandcs_s *priv, uint8_t *buffer,
/* Transfer without DMA */
{
ret = nand_nfcsram_read(src, buffer, buflen);
uint8_t *src8 = (uint8_t *)NFCSRAM_BASE;
uint8_t *dest8 = buffer;
for (remaining = buflen; remaining > 0; remaining--)
{
*dest8++ = *src8++;
}
ret = OK;
}
nand_dump("NFS SRAM Read", buffer, buflen);
return ret;
}
/****************************************************************************
* Name: nand_read
*
* Description:
* Read data directly from the NAND data address. Currently this only used
* by the PMECC logic which I could not get working if I read from NFC SRAM.
*
* Input Parameters:
* priv - Lower-half, private NAND FLASH device state
* nfcsram - True: Use NFC Host SRAM
* buffer - Buffer that provides the data for the write
*
* Returned Value
* OK on success; a negated errno value on failure.
*
****************************************************************************/
#ifdef CONFIG_SAMA5_HAVE_PMECC
static int nand_read(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen)
{
int remaining;
int buswidth;
int ret;
fvdbg("buffer=%p buflen=%d\n", buffer, (int)buflen);
/* Get the buswidth */
buswidth = nandmodel_getbuswidth(&priv->raw.model);
#ifdef CONFIG_SAMA5_NAND_DMA
/* Then perform the transfer via memory-to-memory DMA or not, depending
* on if we have a DMA channel assigned and if the transfer is
* sufficiently large. Small DMAs (e.g., for spare data) are not peformed
* because the DMA context switch can take more time that the DMA itself.
*/
if (priv->dma && buflen > CONFIG_SAMA5_NAND_DMA_THRESHOLD)
{
/* Select NFC DATA DMA */
uint32_t dmaflags =
(buswidth == 16 ? NAND_DMA_FLAGS16 : NAND_DMA_FLAGS8);
/* Transfer using DMA */
ret = nand_dma_read(priv, priv->raw.dataaddr, (uintptr_t)buffer,
buflen, dmaflags);
}
else
#endif
/* Transfer without DMA */
{
/* Check the data bus width of the NAND FLASH */
remaining = buflen;
if (buswidth == 16)
{
volatile uint16_t *src16 = (volatile uint16_t *)priv->raw.dataaddr;
uint16_t *dest16 = (uint16_t *)buffer;
DEBUGASSERT(((uintptr_t)buffer & 1) == 0);
for (; remaining > 1; remaining -= sizeof(uint16_t))
{
*dest16++ = *src16;
}
}
else
{
volatile uint8_t *src8 = (volatile uint8_t *)priv->raw.dataaddr;
uint8_t *dest8 = (uint8_t *)buffer;
for (; remaining > 0; remaining--)
{
*dest8++ = *src8;
}
}
ret = OK;
}
nand_dump("NAND Read", buffer, buflen);
return ret;
}
#endif
/****************************************************************************
* Name: nand_read_pmecc
@ -1616,7 +1675,7 @@ static int nand_read_pmecc(struct sam_nandcs_s *priv, off_t block,
regval |= (HSMC_CFG_RSPARE | HSMC_CFG_RBEDGE | HSMC_CFG_DTOCYC(15) |
HSMC_CFG_DTOMUL_1048576 |
HSMC_CFG_NFCSPARESIZE((sparesize-1) >> 2));
HSMC_CFG_NFCSPARESIZE((sparesize - 1) >> 2));
nand_putreg(SAM_HSMC_CFG, regval);
/* Calculate actual address of the page */
@ -1639,9 +1698,12 @@ static int nand_read_pmecc(struct sam_nandcs_s *priv, off_t block,
/* Start the data phase and perform the transfer */
nand_putreg(SAM_HSMC_PMECCTRL, HSMC_PMECCTRL_DATA);
nand_setup_rbedge(priv);
nand_nfc_cleale(priv,
HSMC_ALE_COL_EN | HSMC_ALE_ROW_EN | HSMC_CLE_VCMD2_EN | HSMC_CLE_DATA_EN,
HSMC_ALE_COL_EN | HSMC_ALE_ROW_EN | HSMC_CLE_VCMD2_EN,
COMMAND_READ_1, COMMAND_READ_2, 0, rowaddr);
nand_wait_rbedge(priv);
/* Reset the PMECC module */
@ -1651,20 +1713,21 @@ static int nand_read_pmecc(struct sam_nandcs_s *priv, off_t block,
nand_putreg(SAM_HSMC_PMECCTRL, HSMC_PMECCTRL_DATA);
/* Read the data area into the caller provided buffer (pagesize bytes) */
/* Read the data area into the caller provided buffer (pagesize bytes).
* NOTE: NFC SRAM is not used. In that case, the wait for PMECC not
* busy below would hang.
*/
ret = nand_read(priv, (uint8_t *)data, pagesize, 0);
ret = nand_read(priv, (uint8_t *)data, pagesize);
if (ret < 0)
{
fdbg("ERROR: nand_read for data region failed: %d\n", ret);
return ret;
}
/* Read the spare area into priv->raw.spare. The data to be read lies at
* offset pagesize in NFC SRAM.
*/
/* Now read the spare area into priv->raw.spare (sparesize bytes). */
ret = nand_read(priv, priv->raw.spare, priv->raw.model.sparesize, pagesize);
ret = nand_read(priv, priv->raw.spare, sparesize);
if (ret < 0)
{
fdbg("ERROR: nand_read for spare region failed: %d\n", ret);
@ -1682,98 +1745,10 @@ static int nand_read_pmecc(struct sam_nandcs_s *priv, off_t block,
* Name: nand_nfcsram_write
*
* Description:
* Write data to NAND using the NFC SRAM (without DMA)
*
* Input Parameters:
* src - Buffer that provides the data for the write
* dest - NAND data destination address
* buflen - The number of bytes to transfer
*
* Returned Value
* OK always
*
****************************************************************************/
static int nand_nfcsram_write(const uint8_t *src, uintptr_t dest, size_t buflen)
{
uint8_t *dest8 = (uint8_t *)dest;
for (; buflen > 0; buflen--)
{
*dest8++ = *src++;
}
return OK;
}
/****************************************************************************
* Name: nand_smc_write8
*
* Description:
* Write 8-bit wide data to NAND using the NAND data address (without DMA)
*
* Input Parameters:
* src - Buffer that provides the data for the write
* dest - NAND data destination address
* buflen - The number of bytes to transfer
*
* Returned Value
* OK always
*
****************************************************************************/
static int nand_smc_write8(const uint8_t *src, uintptr_t dest, size_t buflen)
{
volatile uint8_t *dest8 = (volatile uint8_t *)dest;
for (; buflen > 0; buflen--)
{
*dest8 = *src++;
}
return OK;
}
/****************************************************************************
* Name: nand_smc_write16
*
* Description:
* Write 16-bit wide data to NAND using the NAND data address (without DMA)
*
* Input Parameters:
* src - Buffer that provides the data for the write
* dest - NAND data destination address
* buflen - The number of bytes to transfer
*
* Returned Value
* OK always
*
****************************************************************************/
static int nand_smc_write16(const uint8_t *src, uintptr_t dest, size_t buflen)
{
volatile uint16_t *dest16 = (volatile uint16_t *)dest;
const uint16_t *src16 = (const uint16_t *)src;
DEBUGASSERT(((uintptr_t)src & 1) == 0);
for (; buflen > 1; buflen -= sizeof(uint16_t))
{
*dest16 = *src16++;
}
return OK;
}
/****************************************************************************
* Name: nand_write
*
* Description:
* Write data to NAND using the appropriate method
* Write data to NAND using NAND NFC SRAM
*
* Input Parameters:
* priv - Lower-half, private NAND FLASH device state
* nfcsram - True: Use NFC Host SRAM
* buffer - Buffer that provides the data for the write
* offset - Data offset in bytes
*
@ -1782,54 +1757,18 @@ static int nand_smc_write16(const uint8_t *src, uintptr_t dest, size_t buflen)
*
****************************************************************************/
static int nand_write(struct sam_nandcs_s *priv, bool nfcsram,
uint8_t *buffer, size_t buflen, off_t offset)
static int nand_nfcsram_write(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen, uint16_t offset)
{
uintptr_t dest;
#ifdef CONFIG_SAMA5_NAND_DMA
uint32_t dmaflags;
#endif
int buswidth;
int ret;
fvdbg("nfcsram=%d buffer=%p buflen=%d offset=%d\n",
nfcsram, buffer, (int)buflen, (int)offset);
fvdbg("buffer=%p buflen=%d offset=%d\n", buffer, buflen, offset);
nand_dump("NFC SRAM Write", buffer, buflen);
nand_dump("NAND Write", buffer, buflen);
/* Apply the offset to the destination address */
/* Get the buswidth */
buswidth = nandmodel_getbuswidth(&priv->raw.model);
/* Pick the data destination: The NFC SRAM or the NAND data address */
if (nfcsram)
{
/* Destination is NFC SRAM */
dest = NFCSRAM_BASE;
#ifdef CONFIG_SAMA5_NAND_DMA
/* Select NFC SRAM DMA */
dmaflags = (buswidth == 16 ? NFCSRAM_DMA_FLAGS16 : NFCSRAM_DMA_FLAGS8);
#endif
}
else
{
/* Destination is NFC NAND */
dest = priv->raw.dataaddr;
#ifdef CONFIG_SAMA5_NAND_DMA
/* Select NAND DMA */
dmaflags = (buswidth == 16 ? NAND_DMA_FLAGS16 : NAND_DMA_FLAGS8);
#endif
}
/* Apply the offset to the source address */
dest += offset;
dest = NFCSRAM_BASE + offset;
#ifdef CONFIG_SAMA5_NAND_DMA
/* Then perform the transfer via memory-to-memory DMA or not, depending
@ -1840,32 +1779,124 @@ static int nand_write(struct sam_nandcs_s *priv, bool nfcsram,
if (priv->dma && buflen > CONFIG_SAMA5_NAND_DMA_THRESHOLD)
{
/* Get the buswidth */
int buswidth = nandmodel_getbuswidth(&priv->raw.model);
/* Select NFC SRAM DMA */
uint32_t dmaflags =
(buswidth == 16 ? NFCSRAM_DMA_FLAGS16 : NFCSRAM_DMA_FLAGS8);
/* Transfer using DMA */
return nand_dma_write(priv, (uintptr_t)buffer, dest, buflen, dmaflags);
ret = nand_dma_write(priv, (uintptr_t)buffer, dest, buflen, dmaflags);
}
else
#endif
/* Transfer without DMA */
if (nfcsram)
{
return nand_nfcsram_write(buffer, dest, buflen);
uint8_t *dest8 = (uint8_t *)dest;
for (; buflen > 0; buflen--)
{
*dest8++ = *buffer++;
}
ret = OK;
}
return ret;
}
/****************************************************************************
* Name: nand_write
*
* Description:
* Write data to NAND using the NAND data address.
*
* Input Parameters:
* priv - Lower-half, private NAND FLASH device state
* buffer - Buffer that provides the data for the write
* offset - Data offset in bytes
*
* Returned Value
* OK on success; a negated errno value on failure.
*
****************************************************************************/
static int nand_write(struct sam_nandcs_s *priv, uint8_t *buffer,
uint16_t buflen, uint16_t offset)
{
uintptr_t dest;
int buswidth;
int ret;
fvdbg("buffer=%p buflen=%d offset=%d\n", buffer, buflen, offset);
nand_dump("NAND Write", buffer, buflen);
/* Apply the offset to the destination address */
dest = priv->raw.dataaddr + offset;
/* Get the buswidth */
buswidth = nandmodel_getbuswidth(&priv->raw.model);
#ifdef CONFIG_SAMA5_NAND_DMA
/* Then perform the transfer via memory-to-memory DMA or not, depending
* on if we have a DMA channel assigned and if the transfer is
* sufficiently large. Small DMAs (e.g., for spare data) are not peformed
* because the DMA context switch can take more time that the DMA itself.
*/
if (priv->dma && buflen > CONFIG_SAMA5_NAND_DMA_THRESHOLD)
{
/* Select NFC DATA DMA */
uint32_t dmaflags =
(buswidth == 16 ? NAND_DMA_FLAGS16 : NAND_DMA_FLAGS8);
/* Transfer using DMA */
ret = nand_dma_write(priv, (uintptr_t)buffer, dest, buflen, dmaflags);
}
else
#endif
/* Transfer without DMA */
{
/* Check the data bus width of the NAND FLASH */
if (buswidth == 16)
{
return nand_smc_write16(buffer, dest, buflen);
volatile uint16_t *dest16 = (volatile uint16_t *)dest;
const uint16_t *src16 = (const uint16_t *)buffer;
DEBUGASSERT(((uintptr_t)buffer & 1) == 0);
for (; buflen > 1; buflen -= sizeof(uint16_t))
{
*dest16 = *src16++;
}
}
else
{
return nand_smc_write8(buffer, dest, buflen);
volatile uint8_t *dest8 = (volatile uint8_t *)dest;
for (; buflen > 0; buflen--)
{
*dest8 = *buffer++;
}
}
ret = OK;
}
return ret;
}
/****************************************************************************
@ -1938,7 +1969,7 @@ static int nand_readpage_noecc(struct sam_nandcs_s *priv, off_t block,
/* Configure the SMC */
regval |= (HSMC_CFG_RBEDGE | HSMC_CFG_DTOCYC(15) | HSMC_CFG_DTOMUL_1048576 |
HSMC_CFG_NFCSPARESIZE((sparesize-1) >> 2));
HSMC_CFG_NFCSPARESIZE((sparesize -1 ) >> 2));
nand_putreg(SAM_HSMC_CFG, regval);
/* Calculate actual address of the page */
@ -1958,10 +1989,10 @@ static int nand_readpage_noecc(struct sam_nandcs_s *priv, off_t block,
if (data)
{
ret = nand_read(priv, (uint8_t *)data, pagesize, 0);
ret = nand_nfcsram_read(priv, (uint8_t *)data, pagesize);
if (ret < 0)
{
fdbg("ERROR: nand_read for data region failed: %d\n", ret);
fdbg("ERROR: nand_nfcsram_read for data region failed: %d\n", ret);
return ret;
}
}
@ -1973,10 +2004,10 @@ static int nand_readpage_noecc(struct sam_nandcs_s *priv, off_t block,
if (spare)
{
ret = nand_read(priv, (uint8_t *)spare, sparesize, 0);
ret = nand_nfcsram_read(priv, (uint8_t *)spare, sparesize);
if (ret < 0)
{
fdbg("ERROR: nand_read for spare region failed: %d\n", ret);
fdbg("ERROR: nand_nfcsram_read for spare region failed: %d\n", ret);
return ret;
}
}
@ -2033,7 +2064,8 @@ static int nand_readpage_pmecc(struct sam_nandcs_s *priv, off_t block,
ret = nand_read_pmecc(priv, block, page, data);
if (ret < 0)
{
fdbg("ERROR: Failed to read page\n");
fdbg("ERROR: Block %d page %d Failed to read page\n",
block, page, ret);
goto errout;
}
@ -2042,15 +2074,18 @@ static int nand_readpage_pmecc(struct sam_nandcs_s *priv, off_t block,
regval = nand_getreg(SAM_HSMC_PMECCISR);
if (regval)
{
fdbg("ERROR: block=%d page=%d Corrupted sectors: %08x\n",
block, page, regval);
/* Bad sectors. Check if this is because spare area has been erased */
/* First, re-read the spare area. REVISIT: Is this necessary? */
/* Check if the spare area was erased
* REVISIT: Necessary to re-read. Isn't the spare data alread
* intack in priv->raw.spare from nand_read_pmecc()?
*/
ret = nand_readpage_noecc(priv, block, page, NULL, priv->raw.spare);
if (ret < 0)
{
fdbg("ERROR: Block %d page %d Failed to re-read spare area: %d\n",
block, page, ret);
goto errout;
}
//nand_readpage_noecc(priv, block, page, NULL, priv->raw.spare);
/* Then check if all bytes are in the erased state */
sparesize = nandmodel_getsparesize(&priv->raw.model);
for (i = 0 ; i < sparesize; i++)
@ -2061,14 +2096,21 @@ static int nand_readpage_pmecc(struct sam_nandcs_s *priv, off_t block,
}
}
/* The spare area has been erased */
/* Has the spare area has been erased? */
if (i >= sparesize)
{
/* Clear sector errors */
/* Yes.. clear sector errors */
fdbg("Block=%d page=%d has been erased: %08x\n",
block, page, regval);
regval = 0;
}
else
{
fdbg("ERROR: block=%d page=%d Corrupted sectors: %08x\n",
block, page, regval);
}
}
/* Bit correction will be done directly in destination buffer. */
@ -2076,7 +2118,8 @@ static int nand_readpage_pmecc(struct sam_nandcs_s *priv, off_t block,
ret = pmecc_correction(regval, (uintptr_t)data);
if (ret < 0)
{
fdbg("ERROR: block=%d page=%d Unrecoverable data\n", block, page);
fdbg("ERROR: block=%d page=%d Unrecoverable data error: %d\n",
block, page, ret);
}
/* Disable auto mode */
@ -2159,7 +2202,7 @@ static int nand_writepage_noecc(struct sam_nandcs_s *priv, off_t block,
/* Configure the SMC */
regval |= (HSMC_CFG_RBEDGE | HSMC_CFG_DTOCYC(15) | HSMC_CFG_DTOMUL_1048576 |
HSMC_CFG_NFCSPARESIZE((sparesize-1) >> 2));
HSMC_CFG_NFCSPARESIZE((sparesize - 1) >> 2));
if (spare)
{
@ -2178,19 +2221,19 @@ static int nand_writepage_noecc(struct sam_nandcs_s *priv, off_t block,
if (data)
{
ret = nand_write(priv, true, (uint8_t *)data, pagesize, 0);
ret = nand_nfcsram_write(priv, (uint8_t *)data, pagesize, 0);
if (ret < 0)
{
fdbg("ERROR: nand_write for data region failed: %d\n", ret);
fdbg("ERROR: nand_nfcsram_write for data region failed: %d\n", ret);
return ret;
}
if (spare)
{
ret = nand_write(priv, true, (uint8_t *)spare, sparesize, pagesize);
ret = nand_nfcsram_write(priv, (uint8_t *)spare, sparesize, pagesize);
if (ret < 0)
{
fdbg("ERROR: nand_write for data region failed: %d\n", ret);
fdbg("ERROR: nand_nfcsram_write for data region failed: %d\n", ret);
return ret;
}
}
@ -2230,7 +2273,7 @@ static int nand_writepage_noecc(struct sam_nandcs_s *priv, off_t block,
HSMC_CLE_WRITE_EN | HSMC_ALE_COL_EN | HSMC_ALE_ROW_EN,
COMMAND_WRITE_1,0, pagesize, rowaddr);
ret = nand_write(priv, false, (uint8_t *)spare, sparesize, 0);
ret = nand_write(priv, (uint8_t *)spare, sparesize, 0);
if (ret < 0)
{
fdbg("ERROR: nand_write for spare region failed: %d\n", ret);
@ -2268,16 +2311,17 @@ static int nand_writepage_noecc(struct sam_nandcs_s *priv, off_t block,
static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
unsigned int page, const void *data)
{
uint32_t pagesize;
uint32_t rowaddr;
uint32_t startaddr;
uint32_t eccpersector;
uint32_t sectornumber;
uint32_t sectorindex;
uint32_t regval;
uint8_t *pmecc[8];
uint8_t sectersperpage;
int i;
volatile uint8_t *pmecc;
uint8_t *ecc;
unsigned int pagesize;
unsigned int rowaddr;
unsigned int eccsaddr;
unsigned int eccpersector;
unsigned int sectersperpage;
unsigned int eccsize;
unsigned int sector;
unsigned int i;
int ret = 0;
fvdbg("block=%d page=%d data=%p\n", (int)block, page, data);
@ -2297,22 +2341,25 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
/* Calculate the start page address */
regval = nand_getreg(SAM_HSMC_PMECCSADDR);
pagesize = nandmodel_getpagesize(&priv->raw.model);
startaddr = regval + pagesize;
regval = nand_getreg(SAM_HSMC_PMECCSADDR);
pagesize = nandmodel_getpagesize(&priv->raw.model);
eccsaddr = pagesize + regval;
/* Calculate physical address of the page */
rowaddr = block * nandmodel_pagesperblock(&priv->raw.model) + page;
rowaddr = block * nandmodel_pagesperblock(&priv->raw.model) + page;
fvdbg("pagesize=%d eccsaddr=%d rowaddr=%d\n", pagesize, eccsaddr, rowaddr);
/* Write data area if needed */
if (data)
{
ret = nand_write(priv, true, (uint8_t *)data, pagesize, 0);
ret = nand_nfcsram_write(priv, (uint8_t *)data, pagesize, 0);
if (ret < 0)
{
fdbg("ERROR: nand_write for data region failed: %d\n", ret);
fdbg("ERROR: Block %d page %d nand_nfcsram_write for data region failed: %d\n",
block, page, ret);
goto errout;
}
}
@ -2347,13 +2394,6 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
nand_putreg(SAM_HSMC_PMECCTRL, HSMC_PMECCTRL_RST);
nand_putreg(SAM_HSMC_PMECCTRL, HSMC_PMECCTRL_ENABLE);
/* Read the PMECC redundancy base address for each of (up to) 8 sectors */
for (i = 0; i < 8; i++)
{
pmecc[i] = (uint8_t*)(SAM_HSMC_PMECC_BASE(i));
}
/* Start a data phase */
nand_putreg(SAM_HSMC_PMECCTRL, HSMC_PMECCTRL_DATA);
@ -2373,7 +2413,7 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
nand_nfc_cleale(priv,
HSMC_CLE_WRITE_EN | HSMC_ALE_COL_EN,
COMMAND_RANDOM_IN, 0, startaddr, 0);
COMMAND_RANDOM_IN, 0, eccsaddr, 0);
/* Wait until the kernel of the PMECC is not busy */
@ -2382,7 +2422,10 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
/* Write the ECC */
eccpersector = (pmecc_get_eccsize()) / sectersperpage;
sectornumber = 1 << pmecc_get_pagesize();
eccsize = sectersperpage * eccpersector;
fvdbg("sectersperpage=%d eccpersector=%d eccsize=%d\n",
sectersperpage, eccpersector, eccsize);
#ifdef CONFIG_SAMA5_PMECC_TRIMPAGE
if (nand_trrimffs(priv) && page >= nand_get_trimpage(priv))
@ -2391,33 +2434,32 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
* cleanly erased NAND partitions
*/
for (sectorindex = 0; sectorindex < sectornumber; sectorindex++)
{
for (i = 0; i < eccpersector; i++)
{
g_nand.ecctab[sectorindex * eccpersector + i] = 0xff;
}
}
memset(g_nand.ecctab, 0xff, eccsize);
}
else
#endif
{
/* Read all ECC registers */
/* Read ECC registers for each sector in the page */
for (sectorindex = 0; sectorindex < sectornumber; sectorindex++)
ecc = g_nand.ecctab;
for (sector = 0; sector < sectersperpage; sector++)
{
for(i = 0; i < eccpersector; i++)
pmecc = (volatile uint8_t *)SAM_HSMC_PMECC_BASE(sector);
/* Read all EEC registers for this page */
for (i = 0; i < eccpersector; i++)
{
g_nand.ecctab[sectorindex * eccpersector + i] = pmecc[sectorindex][i];
*ecc++ = *pmecc++;
}
}
}
ret = nand_write(priv, false, (uint8_t *)(uint8_t *)g_nand.ecctab,
sectornumber * eccpersector, 0);
ret = nand_write(priv, (uint8_t *)g_nand.ecctab, eccsize, 0);
if (ret < 0)
{
fdbg("ERROR: nand_write for spare region failed: %d\n", ret);
fdbg("ERROR: Block %d page %d nand_write for spare region failed: %d\n",
block, page, ret);
goto errout;
}
@ -2429,7 +2471,8 @@ static int nand_writepage_pmecc(struct sam_nandcs_s *priv, off_t block,
ret = nand_operation_complete(priv);
if (ret < 0)
{
fdbg("ERROR: Failed writing data area: %d\n", ret);
fdbg("ERROR: Block %d page %d Failed writing data area: %d\n",
block, page, ret);
}
/* Disable the PMECC */
@ -2477,7 +2520,7 @@ static inline int nand_tryeraseblock(struct sam_nandcs_s *priv, off_t block)
ret = nand_operation_complete(priv);
if (ret < 0)
{
fdbg("ERROR: Could not erase block %d: %d\n", block, ret);
fdbg("ERROR: Block %d Could not erase: %d\n", block, ret);
}
return ret;
@ -2513,7 +2556,7 @@ static int nand_eraseblock(struct nand_raw_s *raw, off_t block)
retries--;
}
fdbg("ERROR: Failed to erase %d after %d tries\n",
fdbg("ERROR: Block %d Failed to erase after %d tries\n",
(int)block, NAND_ERASE_NRETRIES);
nand_unlock();
@ -2638,16 +2681,19 @@ static int nand_readpage(struct nand_raw_s *raw, off_t block,
case NANDECC_NONE:
case NANDECC_CHIPECC:
ret = nand_readpage_noecc(priv, block, page, data, spare);
break;
#ifdef CONFIG_SAMA5_HAVE_PMECC
case NANDECC_PMECC:
DEBUGASSERT(!spare);
ret = nand_readpage_pmecc(priv, block, page, data);
break;
#endif
case NANDECC_SWECC:
default:
ret = -EINVAL;
break;
}
nand_unlock();
@ -2698,16 +2744,19 @@ static int nand_writepage(struct nand_raw_s *raw, off_t block,
case NANDECC_NONE:
case NANDECC_CHIPECC:
ret = nand_writepage_noecc(priv, block, page, data, spare);
break;
#ifdef CONFIG_SAMA5_HAVE_PMECC
case NANDECC_PMECC:
DEBUGASSERT(!spare);
ret = nand_writepage_pmecc(priv, block, page, data);
break;
#endif
case NANDECC_SWECC:
default:
ret = -EINVAL;
break;
}
nand_unlock();
@ -2771,7 +2820,7 @@ struct mtd_dev_s *sam_nand_initialize(int cs)
fvdbg("CS%d\n", cs);
/* Select the device structure */
/* Select the device structure (In SAMA5D3, NAND is only supported on CS3). */
#ifdef CONFIG_SAMA5_EBICS0_NAND
if (cs == HSMC_CS0)