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path: root/drivers/mtd/rfd_ftl.c
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Diffstat (limited to 'drivers/mtd/rfd_ftl.c')
-rw-r--r--drivers/mtd/rfd_ftl.c92
1 files changed, 42 insertions, 50 deletions
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index 823fba4e6d2..d1cbf26db2c 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -1,9 +1,7 @@
/*
* rfd_ftl.c -- resident flash disk (flash translation layer)
*
- * Copyright (C) 2005 Sean Young <sean@mess.org>
- *
- * $Id: rfd_ftl.c,v 1.8 2006/01/15 12:51:44 sean Exp $
+ * Copyright © 2005 Sean Young <sean@mess.org>
*
* This type of flash translation layer (FTL) is used by the Embedded BIOS
* by General Software. It is known as the Resident Flash Disk (RFD), see:
@@ -20,11 +18,10 @@
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
+#include <linux/module.h>
#include <asm/types.h>
-#define const_cpu_to_le16 __constant_cpu_to_le16
-
static int block_size = 0;
module_param(block_size, int, 0);
MODULE_PARM_DESC(block_size, "Block size to use by RFD, defaults to erase unit size");
@@ -158,7 +155,7 @@ static int scan_header(struct partition *part)
size_t retlen;
sectors_per_block = part->block_size / SECTOR_SIZE;
- part->total_blocks = part->mbd.mtd->size / part->block_size;
+ part->total_blocks = (u32)part->mbd.mtd->size / part->block_size;
if (part->total_blocks < 2)
return -ENOENT;
@@ -203,9 +200,9 @@ static int scan_header(struct partition *part)
part->sector_map[i] = -1;
for (i=0, blocks_found=0; i<part->total_blocks; i++) {
- rc = part->mbd.mtd->read(part->mbd.mtd,
- i * part->block_size, part->header_size,
- &retlen, (u_char*)part->header_cache);
+ rc = mtd_read(part->mbd.mtd, i * part->block_size,
+ part->header_size, &retlen,
+ (u_char *)part->header_cache);
if (!rc && retlen != part->header_size)
rc = -EIO;
@@ -253,8 +250,8 @@ static int rfd_ftl_readsect(struct mtd_blktrans_dev *dev, u_long sector, char *b
addr = part->sector_map[sector];
if (addr != -1) {
- rc = part->mbd.mtd->read(part->mbd.mtd, addr, SECTOR_SIZE,
- &retlen, (u_char*)buf);
+ rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen,
+ (u_char *)buf);
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
@@ -278,16 +275,17 @@ static void erase_callback(struct erase_info *erase)
part = (struct partition*)erase->priv;
- i = erase->addr / part->block_size;
- if (i >= part->total_blocks || part->blocks[i].offset != erase->addr) {
- printk(KERN_ERR PREFIX "erase callback for unknown offset %x "
- "on '%s'\n", erase->addr, part->mbd.mtd->name);
+ i = (u32)erase->addr / part->block_size;
+ if (i >= part->total_blocks || part->blocks[i].offset != erase->addr ||
+ erase->addr > UINT_MAX) {
+ printk(KERN_ERR PREFIX "erase callback for unknown offset %llx "
+ "on '%s'\n", (unsigned long long)erase->addr, part->mbd.mtd->name);
return;
}
if (erase->state != MTD_ERASE_DONE) {
- printk(KERN_WARNING PREFIX "erase failed at 0x%x on '%s', "
- "state %d\n", erase->addr,
+ printk(KERN_WARNING PREFIX "erase failed at 0x%llx on '%s', "
+ "state %d\n", (unsigned long long)erase->addr,
part->mbd.mtd->name, erase->state);
part->blocks[i].state = BLOCK_FAILED;
@@ -299,16 +297,15 @@ static void erase_callback(struct erase_info *erase)
return;
}
- magic = const_cpu_to_le16(RFD_MAGIC);
+ magic = cpu_to_le16(RFD_MAGIC);
part->blocks[i].state = BLOCK_ERASED;
part->blocks[i].free_sectors = part->data_sectors_per_block;
part->blocks[i].used_sectors = 0;
part->blocks[i].erases++;
- rc = part->mbd.mtd->write(part->mbd.mtd,
- part->blocks[i].offset, sizeof(magic), &retlen,
- (u_char*)&magic);
+ rc = mtd_write(part->mbd.mtd, part->blocks[i].offset, sizeof(magic),
+ &retlen, (u_char *)&magic);
if (!rc && retlen != sizeof(magic))
rc = -EIO;
@@ -344,12 +341,12 @@ static int erase_block(struct partition *part, int block)
part->blocks[block].state = BLOCK_ERASING;
part->blocks[block].free_sectors = 0;
- rc = part->mbd.mtd->erase(part->mbd.mtd, erase);
+ rc = mtd_erase(part->mbd.mtd, erase);
if (rc) {
- printk(KERN_ERR PREFIX "erase of region %x,%x on '%s' "
- "failed\n", erase->addr, erase->len,
- part->mbd.mtd->name);
+ printk(KERN_ERR PREFIX "erase of region %llx,%llx on '%s' "
+ "failed\n", (unsigned long long)erase->addr,
+ (unsigned long long)erase->len, part->mbd.mtd->name);
kfree(erase);
}
@@ -374,9 +371,8 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
if (!map)
goto err2;
- rc = part->mbd.mtd->read(part->mbd.mtd,
- part->blocks[block_no].offset, part->header_size,
- &retlen, (u_char*)map);
+ rc = mtd_read(part->mbd.mtd, part->blocks[block_no].offset,
+ part->header_size, &retlen, (u_char *)map);
if (!rc && retlen != part->header_size)
rc = -EIO;
@@ -415,8 +411,8 @@ static int move_block_contents(struct partition *part, int block_no, u_long *old
}
continue;
}
- rc = part->mbd.mtd->read(part->mbd.mtd, addr,
- SECTOR_SIZE, &retlen, sector_data);
+ rc = mtd_read(part->mbd.mtd, addr, SECTOR_SIZE, &retlen,
+ sector_data);
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
@@ -452,8 +448,7 @@ static int reclaim_block(struct partition *part, u_long *old_sector)
int rc;
/* we have a race if sync doesn't exist */
- if (part->mbd.mtd->sync)
- part->mbd.mtd->sync(part->mbd.mtd);
+ mtd_sync(part->mbd.mtd);
score = 0x7fffffff; /* MAX_INT */
best_block = -1;
@@ -565,8 +560,9 @@ static int find_writable_block(struct partition *part, u_long *old_sector)
}
}
- rc = part->mbd.mtd->read(part->mbd.mtd, part->blocks[block].offset,
- part->header_size, &retlen, (u_char*)part->header_cache);
+ rc = mtd_read(part->mbd.mtd, part->blocks[block].offset,
+ part->header_size, &retlen,
+ (u_char *)part->header_cache);
if (!rc && retlen != part->header_size)
rc = -EIO;
@@ -589,7 +585,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
int block, offset, rc;
u_long addr;
size_t retlen;
- u16 del = const_cpu_to_le16(SECTOR_DELETED);
+ u16 del = cpu_to_le16(SECTOR_DELETED);
block = old_addr / part->block_size;
offset = (old_addr % part->block_size) / SECTOR_SIZE -
@@ -597,8 +593,8 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
addr = part->blocks[block].offset +
(HEADER_MAP_OFFSET + offset) * sizeof(u16);
- rc = part->mbd.mtd->write(part->mbd.mtd, addr,
- sizeof(del), &retlen, (u_char*)&del);
+ rc = mtd_write(part->mbd.mtd, addr, sizeof(del), &retlen,
+ (u_char *)&del);
if (!rc && retlen != sizeof(del))
rc = -EIO;
@@ -606,8 +602,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
if (rc) {
printk(KERN_ERR PREFIX "error writing '%s' at "
"0x%lx\n", part->mbd.mtd->name, addr);
- if (rc)
- goto err;
+ goto err;
}
if (block == part->current_block)
part->header_cache[offset + HEADER_MAP_OFFSET] = del;
@@ -670,8 +665,8 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
addr = (i + part->header_sectors_per_block) * SECTOR_SIZE +
block->offset;
- rc = part->mbd.mtd->write(part->mbd.mtd,
- addr, SECTOR_SIZE, &retlen, (u_char*)buf);
+ rc = mtd_write(part->mbd.mtd, addr, SECTOR_SIZE, &retlen,
+ (u_char *)buf);
if (!rc && retlen != SECTOR_SIZE)
rc = -EIO;
@@ -679,8 +674,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
if (rc) {
printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
part->mbd.mtd->name, addr);
- if (rc)
- goto err;
+ goto err;
}
part->sector_map[sector] = addr;
@@ -690,8 +684,8 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
part->header_cache[i + HEADER_MAP_OFFSET] = entry;
addr = block->offset + (HEADER_MAP_OFFSET + i) * sizeof(u16);
- rc = part->mbd.mtd->write(part->mbd.mtd, addr,
- sizeof(entry), &retlen, (u_char*)&entry);
+ rc = mtd_write(part->mbd.mtd, addr, sizeof(entry), &retlen,
+ (u_char *)&entry);
if (!rc && retlen != sizeof(entry))
rc = -EIO;
@@ -699,8 +693,7 @@ static int do_writesect(struct mtd_blktrans_dev *dev, u_long sector, char *buf,
if (rc) {
printk(KERN_ERR PREFIX "error writing '%s' at 0x%lx\n",
part->mbd.mtd->name, addr);
- if (rc)
- goto err;
+ goto err;
}
block->used_sectors++;
block->free_sectors--;
@@ -765,7 +758,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
{
struct partition *part;
- if (mtd->type != MTD_NORFLASH)
+ if (mtd->type != MTD_NORFLASH || mtd->size > UINT_MAX)
return;
part = kzalloc(sizeof(struct partition), GFP_KERNEL);
@@ -820,10 +813,9 @@ static void rfd_ftl_remove_dev(struct mtd_blktrans_dev *dev)
vfree(part->sector_map);
kfree(part->header_cache);
kfree(part->blocks);
- kfree(part);
}
-struct mtd_blktrans_ops rfd_ftl_tr = {
+static struct mtd_blktrans_ops rfd_ftl_tr = {
.name = "rfd",
.major = RFD_FTL_MAJOR,
.part_bits = PART_BITS,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 07:45:23 +0000