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driver/filemtd:support isbad & markbad

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In this change, we can mount a filesystem on filemtd that works like Yaffs and works on the Nand driver

Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
This commit is contained in:
chenrun1 2024-01-26 16:38:41 +08:00 committed by Xiang Xiao
parent 4fc111965d
commit d19486e1f8
1 changed files with 35 additions and 9 deletions
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44
drivers/mtd/filemtd.c
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@ -119,6 +119,8 @@ static ssize_t file_bytewrite(FAR struct mtd_dev_s *dev, off_t offset,
#endif
static int filemtd_ioctl(FAR struct mtd_dev_s *dev, int cmd,
unsigned long arg);
static int filemtd_isbad(FAR struct mtd_dev_s *dev, off_t block);
static int filemtd_markbad(FAR struct mtd_dev_s *dev, off_t block);
#ifdef CONFIG_MTD_LOOP
static ssize_t mtd_loop_read(FAR struct file *filep, FAR char *buffer,
@ -149,6 +151,28 @@ static const struct file_operations g_fops =
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: filemtd_isbad
****************************************************************************/
static int filemtd_isbad(FAR struct mtd_dev_s *dev, off_t block)
{
/* We always think it's all GOODBLOCK */
return 0;
}
/****************************************************************************
* Name: filemtd_markbad
****************************************************************************/
static int filemtd_markbad(FAR struct mtd_dev_s *dev, off_t block)
{
/* Provides a dummy interface */
return 0;
}
/****************************************************************************
* Name: filemtd_write
****************************************************************************/
@ -800,17 +824,19 @@ FAR struct mtd_dev_s *filemtd_initialize(FAR const char *path, size_t offset,
* nullified by kmm_zalloc).
*/
priv->mtd.erase = filemtd_erase;
priv->mtd.bread = filemtd_bread;
priv->mtd.bwrite = filemtd_bwrite;
priv->mtd.read = filemtd_byteread;
priv->mtd.erase = filemtd_erase;
priv->mtd.bread = filemtd_bread;
priv->mtd.bwrite = filemtd_bwrite;
priv->mtd.read = filemtd_byteread;
#ifdef CONFIG_MTD_BYTE_WRITE
priv->mtd.write = file_bytewrite;
priv->mtd.write = file_bytewrite;
#endif
priv->mtd.ioctl = filemtd_ioctl;
priv->mtd.name = "filemtd";
priv->offset = offset;
priv->nblocks = nblocks;
priv->mtd.ioctl = filemtd_ioctl;
priv->mtd.isbad = filemtd_isbad;
priv->mtd.markbad = filemtd_markbad;
priv->mtd.name = "filemtd";
priv->offset = offset;
priv->nblocks = nblocks;
return &priv->mtd;
}