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path: root/drivers/mtd/ssfdc.c
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Diffstat (limited to 'drivers/mtd/ssfdc.c')
-rw-r--r--drivers/mtd/ssfdc.c136
1 files changed, 63 insertions, 73 deletions
diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index ddbf015f411..daf82ba7aba 100644
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -1,6 +1,6 @@
/*
* Linux driver for SSFDC Flash Translation Layer (Read only)
- * (c) 2005 Eptar srl
+ * © 2005 Eptar srl
* Author: Claudio Lanconelli <lanconelli.claudio@eptar.com>
*
* Based on NTFL and MTDBLOCK_RO drivers
@@ -10,7 +10,6 @@
* published by the Free Software Foundation.
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -29,7 +28,7 @@ struct ssfdcr_record {
int cis_block; /* block n. containing CIS/IDI */
int erase_size; /* phys_block_size */
unsigned short *logic_block_map; /* all zones (max 8192 phys blocks on
- the 128MB) */
+ the 128MiB) */
int map_len; /* n. phys_blocks on the card */
};
@@ -43,11 +42,11 @@ struct ssfdcr_record {
#define MAX_LOGIC_BLK_PER_ZONE 1000
#define MAX_PHYS_BLK_PER_ZONE 1024
-#define KB(x) ( (x) * 1024L )
-#define MB(x) ( KB(x) * 1024L )
+#define KiB(x) ( (x) * 1024L )
+#define MiB(x) ( KiB(x) * 1024L )
/** CHS Table
- 1MB 2MB 4MB 8MB 16MB 32MB 64MB 128MB
+ 1MiB 2MiB 4MiB 8MiB 16MiB 32MiB 64MiB 128MiB
NCylinder 125 125 250 250 500 500 500 500
NHead 4 4 4 4 4 8 8 16
NSector 4 8 8 16 16 16 32 32
@@ -64,14 +63,14 @@ typedef struct {
/* Must be ordered by size */
static const chs_entry_t chs_table[] = {
- { MB( 1), 125, 4, 4 },
- { MB( 2), 125, 4, 8 },
- { MB( 4), 250, 4, 8 },
- { MB( 8), 250, 4, 16 },
- { MB( 16), 500, 4, 16 },
- { MB( 32), 500, 8, 16 },
- { MB( 64), 500, 8, 32 },
- { MB(128), 500, 16, 32 },
+ { MiB( 1), 125, 4, 4 },
+ { MiB( 2), 125, 4, 8 },
+ { MiB( 4), 250, 4, 8 },
+ { MiB( 8), 250, 4, 16 },
+ { MiB( 16), 500, 4, 16 },
+ { MiB( 32), 500, 8, 16 },
+ { MiB( 64), 500, 8, 32 },
+ { MiB(128), 500, 16, 32 },
{ 0 },
};
@@ -109,30 +108,34 @@ static int get_valid_cis_sector(struct mtd_info *mtd)
int ret, k, cis_sector;
size_t retlen;
loff_t offset;
- uint8_t sect_buf[SECTOR_SIZE];
+ uint8_t *sect_buf;
+
+ cis_sector = -1;
+
+ sect_buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
+ if (!sect_buf)
+ goto out;
/*
* Look for CIS/IDI sector on the first GOOD block (give up after 4 bad
* blocks). If the first good block doesn't contain CIS number the flash
* is not SSFDC formatted
*/
- cis_sector = -1;
for (k = 0, offset = 0; k < 4; k++, offset += mtd->erasesize) {
- if (!mtd->block_isbad(mtd, offset)) {
- ret = mtd->read(mtd, offset, SECTOR_SIZE, &retlen,
- sect_buf);
+ if (mtd_block_isbad(mtd, offset)) {
+ ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen,
+ sect_buf);
/* CIS pattern match on the sector buffer */
- if ( ret < 0 || retlen != SECTOR_SIZE ) {
+ if (ret < 0 || retlen != SECTOR_SIZE) {
printk(KERN_WARNING
"SSFDC_RO:can't read CIS/IDI sector\n");
- } else if ( !memcmp(sect_buf, cis_numbers,
- sizeof(cis_numbers)) ) {
+ } else if (!memcmp(sect_buf, cis_numbers,
+ sizeof(cis_numbers))) {
/* Found */
cis_sector = (int)(offset >> SECTOR_SHIFT);
} else {
- DEBUG(MTD_DEBUG_LEVEL1,
- "SSFDC_RO: CIS/IDI sector not found"
+ pr_debug("SSFDC_RO: CIS/IDI sector not found"
" on %s (mtd%d)\n", mtd->name,
mtd->index);
}
@@ -140,6 +143,8 @@ static int get_valid_cis_sector(struct mtd_info *mtd)
}
}
+ kfree(sect_buf);
+ out:
return cis_sector;
}
@@ -151,7 +156,7 @@ static int read_physical_sector(struct mtd_info *mtd, uint8_t *sect_buf,
size_t retlen;
loff_t offset = (loff_t)sect_no << SECTOR_SHIFT;
- ret = mtd->read(mtd, offset, SECTOR_SIZE, &retlen, sect_buf);
+ ret = mtd_read(mtd, offset, SECTOR_SIZE, &retlen, sect_buf);
if (ret < 0 || retlen != SECTOR_SIZE)
return -1;
@@ -164,15 +169,14 @@ static int read_raw_oob(struct mtd_info *mtd, loff_t offs, uint8_t *buf)
struct mtd_oob_ops ops;
int ret;
- ops.mode = MTD_OOB_RAW;
+ ops.mode = MTD_OPS_RAW;
ops.ooboffs = 0;
- ops.ooblen = mtd->oobsize;
- ops.len = OOB_SIZE;
+ ops.ooblen = OOB_SIZE;
ops.oobbuf = buf;
ops.datbuf = NULL;
- ret = mtd->read_oob(mtd, offs, &ops);
- if (ret < 0 || ops.retlen != OOB_SIZE)
+ ret = mtd_read_oob(mtd, offs, &ops);
+ if (ret < 0 || ops.oobretlen != OOB_SIZE)
return -1;
return 0;
@@ -216,8 +220,7 @@ static int get_logical_address(uint8_t *oob_buf)
block_address >>= 1;
if (get_parity(block_address, 10) != parity) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "SSFDC_RO: logical address field%d"
+ pr_debug("SSFDC_RO: logical address field%d"
"parity error(0x%04X)\n", j+1,
block_address);
} else {
@@ -227,10 +230,10 @@ static int get_logical_address(uint8_t *oob_buf)
}
}
- if ( !ok )
+ if (!ok)
block_address = -2;
- DEBUG(MTD_DEBUG_LEVEL3, "SSFDC_RO: get_logical_address() %d\n",
+ pr_debug("SSFDC_RO: get_logical_address() %d\n",
block_address);
return block_address;
@@ -244,21 +247,20 @@ static int build_logical_block_map(struct ssfdcr_record *ssfdc)
int ret, block_address, phys_block;
struct mtd_info *mtd = ssfdc->mbd.mtd;
- DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: build_block_map() nblks=%d (%luK)\n",
- ssfdc->map_len, (unsigned long)ssfdc->map_len *
- ssfdc->erase_size / 1024 );
+ pr_debug("SSFDC_RO: build_block_map() nblks=%d (%luK)\n",
+ ssfdc->map_len,
+ (unsigned long)ssfdc->map_len * ssfdc->erase_size / 1024);
/* Scan every physical block, skip CIS block */
for (phys_block = ssfdc->cis_block + 1; phys_block < ssfdc->map_len;
phys_block++) {
offset = (unsigned long)phys_block * ssfdc->erase_size;
- if (mtd->block_isbad(mtd, offset))
+ if (mtd_block_isbad(mtd, offset))
continue; /* skip bad blocks */
ret = read_raw_oob(mtd, offset, oob_buf);
if (ret < 0) {
- DEBUG(MTD_DEBUG_LEVEL0,
- "SSFDC_RO: mtd read_oob() failed at %lu\n",
+ pr_debug("SSFDC_RO: mtd read_oob() failed at %lu\n",
offset);
return -1;
}
@@ -274,8 +276,7 @@ static int build_logical_block_map(struct ssfdcr_record *ssfdc)
ssfdc->logic_block_map[block_address] =
(unsigned short)phys_block;
- DEBUG(MTD_DEBUG_LEVEL2,
- "SSFDC_RO: build_block_map() phys_block=%d,"
+ pr_debug("SSFDC_RO: build_block_map() phys_block=%d,"
"logic_block_addr=%d, zone=%d\n",
phys_block, block_address, zone_index);
}
@@ -289,7 +290,8 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
int cis_sector;
/* Check for small page NAND flash */
- if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE)
+ if (!mtd_type_is_nand(mtd) || mtd->oobsize != OOB_SIZE ||
+ mtd->size > UINT_MAX)
return;
/* Check for SSDFC format by reading CIS/IDI sector */
@@ -298,51 +300,42 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
return;
ssfdc = kzalloc(sizeof(struct ssfdcr_record), GFP_KERNEL);
- if (!ssfdc) {
- printk(KERN_WARNING
- "SSFDC_RO: out of memory for data structures\n");
+ if (!ssfdc)
return;
- }
ssfdc->mbd.mtd = mtd;
ssfdc->mbd.devnum = -1;
- ssfdc->mbd.blksize = SECTOR_SIZE;
ssfdc->mbd.tr = tr;
ssfdc->mbd.readonly = 1;
ssfdc->cis_block = cis_sector / (mtd->erasesize >> SECTOR_SHIFT);
ssfdc->erase_size = mtd->erasesize;
- ssfdc->map_len = mtd->size / mtd->erasesize;
+ ssfdc->map_len = (u32)mtd->size / mtd->erasesize;
- DEBUG(MTD_DEBUG_LEVEL1,
- "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
+ pr_debug("SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
ssfdc->cis_block, ssfdc->erase_size, ssfdc->map_len,
- (ssfdc->map_len + MAX_PHYS_BLK_PER_ZONE - 1) /
- MAX_PHYS_BLK_PER_ZONE);
+ DIV_ROUND_UP(ssfdc->map_len, MAX_PHYS_BLK_PER_ZONE));
/* Set geometry */
ssfdc->heads = 16;
ssfdc->sectors = 32;
- get_chs( mtd->size, NULL, &ssfdc->heads, &ssfdc->sectors);
- ssfdc->cylinders = (unsigned short)((mtd->size >> SECTOR_SHIFT) /
+ get_chs(mtd->size, NULL, &ssfdc->heads, &ssfdc->sectors);
+ ssfdc->cylinders = (unsigned short)(((u32)mtd->size >> SECTOR_SHIFT) /
((long)ssfdc->sectors * (long)ssfdc->heads));
- DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n",
+ pr_debug("SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n",
ssfdc->cylinders, ssfdc->heads , ssfdc->sectors,
(long)ssfdc->cylinders * (long)ssfdc->heads *
- (long)ssfdc->sectors );
+ (long)ssfdc->sectors);
ssfdc->mbd.size = (long)ssfdc->heads * (long)ssfdc->cylinders *
(long)ssfdc->sectors;
/* Allocate logical block map */
- ssfdc->logic_block_map = kmalloc( sizeof(ssfdc->logic_block_map[0]) *
- ssfdc->map_len, GFP_KERNEL);
- if (!ssfdc->logic_block_map) {
- printk(KERN_WARNING
- "SSFDC_RO: out of memory for data structures\n");
+ ssfdc->logic_block_map = kmalloc(sizeof(ssfdc->logic_block_map[0]) *
+ ssfdc->map_len, GFP_KERNEL);
+ if (!ssfdc->logic_block_map)
goto out_err;
- }
memset(ssfdc->logic_block_map, 0xff, sizeof(ssfdc->logic_block_map[0]) *
ssfdc->map_len);
@@ -367,11 +360,10 @@ static void ssfdcr_remove_dev(struct mtd_blktrans_dev *dev)
{
struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev;
- DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: remove_dev (i=%d)\n", dev->devnum);
+ pr_debug("SSFDC_RO: remove_dev (i=%d)\n", dev->devnum);
del_mtd_blktrans_dev(dev);
kfree(ssfdc->logic_block_map);
- kfree(ssfdc);
}
static int ssfdcr_readsect(struct mtd_blktrans_dev *dev,
@@ -384,8 +376,7 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev,
offset = (int)(logic_sect_no % sectors_per_block);
block_address = (int)(logic_sect_no / sectors_per_block);
- DEBUG(MTD_DEBUG_LEVEL3,
- "SSFDC_RO: ssfdcr_readsect(%lu) sec_per_blk=%d, ofst=%d,"
+ pr_debug("SSFDC_RO: ssfdcr_readsect(%lu) sec_per_blk=%d, ofst=%d,"
" block_addr=%d\n", logic_sect_no, sectors_per_block, offset,
block_address);
@@ -394,8 +385,7 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev,
block_address = ssfdc->logic_block_map[block_address];
- DEBUG(MTD_DEBUG_LEVEL3,
- "SSFDC_RO: ssfdcr_readsect() phys_block_addr=%d\n",
+ pr_debug("SSFDC_RO: ssfdcr_readsect() phys_block_addr=%d\n",
block_address);
if (block_address < 0xffff) {
@@ -404,11 +394,10 @@ static int ssfdcr_readsect(struct mtd_blktrans_dev *dev,
sect_no = (unsigned long)block_address * sectors_per_block +
offset;
- DEBUG(MTD_DEBUG_LEVEL3,
- "SSFDC_RO: ssfdcr_readsect() phys_sect_no=%lu\n",
+ pr_debug("SSFDC_RO: ssfdcr_readsect() phys_sect_no=%lu\n",
sect_no);
- if (read_physical_sector( ssfdc->mbd.mtd, buf, sect_no ) < 0)
+ if (read_physical_sector(ssfdc->mbd.mtd, buf, sect_no) < 0)
return -EIO;
} else {
memset(buf, 0xff, SECTOR_SIZE);
@@ -421,7 +410,7 @@ static int ssfdcr_getgeo(struct mtd_blktrans_dev *dev, struct hd_geometry *geo)
{
struct ssfdcr_record *ssfdc = (struct ssfdcr_record *)dev;
- DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: ssfdcr_getgeo() C=%d, H=%d, S=%d\n",
+ pr_debug("SSFDC_RO: ssfdcr_getgeo() C=%d, H=%d, S=%d\n",
ssfdc->cylinders, ssfdc->heads, ssfdc->sectors);
geo->heads = ssfdc->heads;
@@ -441,6 +430,7 @@ static struct mtd_blktrans_ops ssfdcr_tr = {
.name = "ssfdc",
.major = SSFDCR_MAJOR,
.part_bits = SSFDCR_PARTN_BITS,
+ .blksize = SECTOR_SIZE,
.getgeo = ssfdcr_getgeo,
.readsect = ssfdcr_readsect,
.add_mtd = ssfdcr_add_mtd,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 07:50:47 +0000