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path: root/drivers/mtd/nand/diskonchip.c
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Diffstat (limited to 'drivers/mtd/nand/diskonchip.c')
-rw-r--r--drivers/mtd/nand/diskonchip.c88
1 files changed, 15 insertions, 73 deletions
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index df921e7a496..f68a7bccecd 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -38,7 +38,7 @@
#define CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS 0
#endif
-static unsigned long __initdata doc_locations[] = {
+static unsigned long doc_locations[] __initdata = {
#if defined (__alpha__) || defined(__i386__) || defined(__x86_64__)
#ifdef CONFIG_MTD_NAND_DISKONCHIP_PROBE_HIGH
0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
@@ -46,15 +46,13 @@ static unsigned long __initdata doc_locations[] = {
0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000,
0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000,
-#else /* CONFIG_MTD_DOCPROBE_HIGH */
+#else
0xc8000, 0xca000, 0xcc000, 0xce000,
0xd0000, 0xd2000, 0xd4000, 0xd6000,
0xd8000, 0xda000, 0xdc000, 0xde000,
0xe0000, 0xe2000, 0xe4000, 0xe6000,
0xe8000, 0xea000, 0xec000, 0xee000,
-#endif /* CONFIG_MTD_DOCPROBE_HIGH */
-#else
-#warning Unknown architecture for DiskOnChip. No default probe locations defined
+#endif
#endif
0xffffffff };
@@ -376,19 +374,6 @@ static void doc2000_readbuf_dword(struct mtd_info *mtd, u_char *buf, int len)
}
}
-static int doc2000_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = this->priv;
- void __iomem *docptr = doc->virtadr;
- int i;
-
- for (i = 0; i < len; i++)
- if (buf[i] != ReadDOC(docptr, 2k_CDSN_IO))
- return -EFAULT;
- return 0;
-}
-
static uint16_t __init doc200x_ident_chip(struct mtd_info *mtd, int nr)
{
struct nand_chip *this = mtd->priv;
@@ -526,26 +511,6 @@ static void doc2001_readbuf(struct mtd_info *mtd, u_char *buf, int len)
buf[i] = ReadDOC(docptr, LastDataRead);
}
-static int doc2001_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = this->priv;
- void __iomem *docptr = doc->virtadr;
- int i;
-
- /* Start read pipeline */
- ReadDOC(docptr, ReadPipeInit);
-
- for (i = 0; i < len - 1; i++)
- if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
- ReadDOC(docptr, LastDataRead);
- return i;
- }
- if (buf[i] != ReadDOC(docptr, LastDataRead))
- return i;
- return 0;
-}
-
static u_char doc2001plus_read_byte(struct mtd_info *mtd)
{
struct nand_chip *this = mtd->priv;
@@ -610,33 +575,6 @@ static void doc2001plus_readbuf(struct mtd_info *mtd, u_char *buf, int len)
printk("\n");
}
-static int doc2001plus_verifybuf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- struct nand_chip *this = mtd->priv;
- struct doc_priv *doc = this->priv;
- void __iomem *docptr = doc->virtadr;
- int i;
-
- if (debug)
- printk("verifybuf of %d bytes: ", len);
-
- /* Start read pipeline */
- ReadDOC(docptr, Mplus_ReadPipeInit);
- ReadDOC(docptr, Mplus_ReadPipeInit);
-
- for (i = 0; i < len - 2; i++)
- if (buf[i] != ReadDOC(docptr, Mil_CDSN_IO)) {
- ReadDOC(docptr, Mplus_LastDataRead);
- ReadDOC(docptr, Mplus_LastDataRead);
- return i;
- }
- if (buf[len - 2] != ReadDOC(docptr, Mplus_LastDataRead))
- return len - 2;
- if (buf[len - 1] != ReadDOC(docptr, Mplus_LastDataRead))
- return len - 1;
- return 0;
-}
-
static void doc2001plus_select_chip(struct mtd_info *mtd, int chip)
{
struct nand_chip *this = mtd->priv;
@@ -760,7 +698,8 @@ static void doc2001plus_command(struct mtd_info *mtd, unsigned command, int colu
/* Serially input address */
if (column != -1) {
/* Adjust columns for 16 bit buswidth */
- if (this->options & NAND_BUSWIDTH_16)
+ if (this->options & NAND_BUSWIDTH_16 &&
+ !nand_opcode_8bits(command))
column >>= 1;
WriteDOC(column, docptr, Mplus_FlashAddress);
}
@@ -1120,7 +1059,6 @@ static inline int __init nftl_partscan(struct mtd_info *mtd, struct mtd_partitio
buf = kmalloc(mtd->writesize, GFP_KERNEL);
if (!buf) {
- printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
return 0;
}
if (!(numheaders = find_media_headers(mtd, buf, "ANAND", 1)))
@@ -1228,7 +1166,6 @@ static inline int __init inftl_partscan(struct mtd_info *mtd, struct mtd_partiti
buf = kmalloc(mtd->writesize, GFP_KERNEL);
if (!buf) {
- printk(KERN_ERR "DiskOnChip mediaheader kmalloc failed!\n");
return 0;
}
@@ -1432,7 +1369,6 @@ static inline int __init doc2000_init(struct mtd_info *mtd)
this->read_byte = doc2000_read_byte;
this->write_buf = doc2000_writebuf;
this->read_buf = doc2000_readbuf;
- this->verify_buf = doc2000_verifybuf;
this->scan_bbt = nftl_scan_bbt;
doc->CDSNControl = CDSN_CTRL_FLASH_IO | CDSN_CTRL_ECC_IO;
@@ -1449,7 +1385,6 @@ static inline int __init doc2001_init(struct mtd_info *mtd)
this->read_byte = doc2001_read_byte;
this->write_buf = doc2001_writebuf;
this->read_buf = doc2001_readbuf;
- this->verify_buf = doc2001_verifybuf;
ReadDOC(doc->virtadr, ChipID);
ReadDOC(doc->virtadr, ChipID);
@@ -1480,7 +1415,6 @@ static inline int __init doc2001plus_init(struct mtd_info *mtd)
this->read_byte = doc2001plus_read_byte;
this->write_buf = doc2001plus_writebuf;
this->read_buf = doc2001plus_readbuf;
- this->verify_buf = doc2001plus_verifybuf;
this->scan_bbt = inftl_scan_bbt;
this->cmd_ctrl = NULL;
this->select_chip = doc2001plus_select_chip;
@@ -1505,10 +1439,13 @@ static int __init doc_probe(unsigned long physadr)
int reg, len, numchips;
int ret = 0;
+ if (!request_mem_region(physadr, DOC_IOREMAP_LEN, "DiskOnChip"))
+ return -EBUSY;
virtadr = ioremap(physadr, DOC_IOREMAP_LEN);
if (!virtadr) {
printk(KERN_ERR "Diskonchip ioremap failed: 0x%x bytes at 0x%lx\n", DOC_IOREMAP_LEN, physadr);
- return -EIO;
+ ret = -EIO;
+ goto error_ioremap;
}
/* It's not possible to cleanly detect the DiskOnChip - the
@@ -1626,7 +1563,6 @@ static int __init doc_probe(unsigned long physadr)
sizeof(struct nand_chip) + sizeof(struct doc_priv) + (2 * sizeof(struct nand_bbt_descr));
mtd = kzalloc(len, GFP_KERNEL);
if (!mtd) {
- printk(KERN_ERR "DiskOnChip kmalloc (%d bytes) failed!\n", len);
ret = -ENOMEM;
goto fail;
}
@@ -1653,6 +1589,7 @@ static int __init doc_probe(unsigned long physadr)
nand->ecc.mode = NAND_ECC_HW_SYNDROME;
nand->ecc.size = 512;
nand->ecc.bytes = 6;
+ nand->ecc.strength = 2;
nand->bbt_options = NAND_BBT_USE_FLASH;
doc->physadr = physadr;
@@ -1693,6 +1630,10 @@ static int __init doc_probe(unsigned long physadr)
WriteDOC(save_control, virtadr, DOCControl);
fail:
iounmap(virtadr);
+
+error_ioremap:
+ release_mem_region(physadr, DOC_IOREMAP_LEN);
+
return ret;
}
@@ -1709,6 +1650,7 @@ static void release_nanddoc(void)
nextmtd = doc->nextdoc;
nand_release(mtd);
iounmap(doc->virtadr);
+ release_mem_region(doc->physadr, DOC_IOREMAP_LEN);
kfree(mtd);
}
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 23:04:24 +0000