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mmcsd: add multi partitions prototype implementation

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Signed-off-by: wanggang26 <wanggang26@xiaomi.com>
This commit is contained in:
wanggang26 2023-10-17 18:47:29 +08:00 • committed by Xiang Xiao
parent 86869e96c9
commit ecc2d473e3
3 changed files with 45 additions and 20 deletions
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8
drivers/mmcsd/mmcsd.h
View file

@ -60,6 +60,12 @@
* Public Types
****************************************************************************/
struct mmcsd_part_s
{
FAR struct mmcsd_state_s *priv;
uint32_t nblocks; /* Number of blocks */
};
/* This structure is contains the unique state of the MMC/SD block driver */
struct mmcsd_state_s
@ -68,6 +74,7 @@ struct mmcsd_state_s
uint8_t crefs; /* Open references on the driver */
mutex_t lock; /* Assures mutually exclusive access to the slot */
int minor; /* Device number */
struct mmcsd_part_s part; /* Partition data */
/* Status flags */
@ -96,7 +103,6 @@ struct mmcsd_state_s
uint8_t blockshift; /* Log2 of blocksize */
uint16_t blocksize; /* Read block length (== block size) */
uint32_t nblocks; /* Number of blocks */
};
/****************************************************************************

4
drivers/mmcsd/mmcsd_procfs.c
View file

@ -334,6 +334,7 @@ static ssize_t mmcsd_read(FAR struct file *filep, FAR char *buffer,
{
FAR struct mmcsd_file_s *mmcsdfile = filep->f_priv;
FAR struct inode *inode;
FAR struct mmcsd_part_s *part;
char path[32];
ssize_t ret;
@ -345,7 +346,8 @@ static ssize_t mmcsd_read(FAR struct file *filep, FAR char *buffer,
}
DEBUGASSERT(filep->f_priv);
ret = mmcsdfile->read(filep, buffer, buflen, inode->i_private);
part = inode->i_private;
ret = mmcsdfile->read(filep, buffer, buflen, part->priv);
close_blockdriver(inode);
return ret;

53
drivers/mmcsd/mmcsd_sdio.c
View file

@ -689,7 +689,7 @@ static void mmcsd_decode_csd(FAR struct mmcsd_state_s *priv, uint32_t csd[4])
priv->blockshift = 9;
priv->blocksize = 1 << 9;
priv->nblocks = (csize + 1) << (19 - priv->blockshift);
priv->part.nblocks = (csize + 1) << (19 - priv->blockshift);
#ifdef CONFIG_DEBUG_FS_INFO
decoded.u.sdblock.csize = csize;
@ -710,7 +710,7 @@ static void mmcsd_decode_csd(FAR struct mmcsd_state_s *priv, uint32_t csd[4])
((csd[2] >> 30) & 3);
uint8_t csizemult = (csd[2] >> 15) & 7;
priv->nblocks = ((uint32_t)csize + 1) *
priv->part.nblocks = ((uint32_t)csize + 1) *
(1 << (csizemult + 2));
priv->blockshift = readbllen;
priv->blocksize = (1 << readbllen);
@ -725,7 +725,7 @@ static void mmcsd_decode_csd(FAR struct mmcsd_state_s *priv, uint32_t csd[4])
if (priv->blocksize > 512)
{
priv->nblocks <<= (priv->blockshift - 9);
priv->part.nblocks <<= (priv->blockshift - 9);
priv->blocksize = 512;
priv->blockshift = 9;
}
@ -882,8 +882,8 @@ static void mmcsd_decode_csd(FAR struct mmcsd_state_s *priv, uint32_t csd[4])
decoded.fileformat, decoded.mmcecc, decoded.crc);
finfo("Capacity: %luKb, Block size: %db, nblocks: %d wrprotect: %d\n",
(unsigned long)MMCSD_CAPACITY(priv->nblocks, priv->blockshift),
priv->blocksize, priv->nblocks, priv->wrprotect);
(unsigned long)MMCSD_CAPACITY(priv->part.nblocks, priv->blockshift),
priv->blocksize, priv->part.nblocks, priv->wrprotect);
#endif
}
@ -2161,11 +2161,13 @@ static ssize_t mmcsd_writemultiple(FAR struct mmcsd_state_s *priv,
static int mmcsd_open(FAR struct inode *inode)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
int ret;
finfo("Entry\n");
DEBUGASSERT(inode->i_private);
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
/* Just increment the reference count on the driver */
@ -2192,11 +2194,13 @@ static int mmcsd_open(FAR struct inode *inode)
static int mmcsd_close(FAR struct inode *inode)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
int ret;
finfo("Entry\n");
DEBUGASSERT(inode->i_private);
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
/* Decrement the reference count on the block driver */
@ -2225,13 +2229,16 @@ static ssize_t mmcsd_read(FAR struct inode *inode, unsigned char *buffer,
blkcnt_t startsector, unsigned int nsectors)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
size_t sector;
size_t endsector;
ssize_t nread;
ssize_t ret = nsectors;
DEBUGASSERT(inode->i_private);
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
finfo("startsector: %" PRIuOFF " nsectors: %u sectorsize: %d\n",
startsector, nsectors, priv->blocksize);
@ -2303,13 +2310,16 @@ static ssize_t mmcsd_write(FAR struct inode *inode,
blkcnt_t startsector, unsigned int nsectors)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
size_t sector;
size_t endsector;
ssize_t nwrite;
ssize_t ret = nsectors;
DEBUGASSERT(inode->i_private);
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
finfo("startsector: %" PRIuOFF " nsectors: %u sectorsize: %d\n",
startsector, nsectors, priv->blocksize);
@ -2377,6 +2387,7 @@ static ssize_t mmcsd_write(FAR struct inode *inode,
static int mmcsd_geometry(FAR struct inode *inode, struct geometry *geometry)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
int ret = -EINVAL;
finfo("Entry\n");
@ -2388,7 +2399,9 @@ static int mmcsd_geometry(FAR struct inode *inode, struct geometry *geometry)
/* Is there a (supported) card inserted in the slot? */
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
ret = mmcsd_lock(priv);
if (ret < 0)
{
@ -2409,7 +2422,7 @@ static int mmcsd_geometry(FAR struct inode *inode, struct geometry *geometry)
geometry->geo_available = true;
geometry->geo_mediachanged = priv->mediachanged;
geometry->geo_writeenabled = !mmcsd_wrprotected(priv);
geometry->geo_nsectors = priv->nblocks;
geometry->geo_nsectors = part->nblocks;
geometry->geo_sectorsize = priv->blocksize;
finfo("available: true mediachanged: %s writeenabled: %s\n",
@ -2439,11 +2452,13 @@ static int mmcsd_geometry(FAR struct inode *inode, struct geometry *geometry)
static int mmcsd_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
{
FAR struct mmcsd_state_s *priv;
FAR struct mmcsd_part_s *part;
int ret;
finfo("Entry\n");
DEBUGASSERT(inode->i_private);
priv = inode->i_private;
part = inode->i_private;
priv = part->priv;
/* Process the IOCTL by command */
@ -3042,11 +3057,11 @@ static int mmcsd_read_extcsd(FAR struct mmcsd_state_s *priv,
return ret;
}
priv->nblocks = (extcsd[215] << 24) | (extcsd[214] << 16) |
(extcsd[213] << 8) | extcsd[212];
priv->part.nblocks = (extcsd[215] << 24) | (extcsd[214] << 16) |
(extcsd[213] << 8) | extcsd[212];
finfo("MMC ext CSD read succsesfully, number of block %" PRId32 "\n",
priv->nblocks);
priv->part.nblocks);
SDIO_GOTEXTCSD(priv->dev, extcsd);
@ -4071,7 +4086,8 @@ static int mmcsd_probe(FAR struct mmcsd_state_s *priv)
/* Yes... */
finfo("Capacity: %" PRIu32 " Kbytes\n",
MMCSD_CAPACITY(priv->nblocks, priv->blockshift));
MMCSD_CAPACITY(priv->part.nblocks,
priv->blockshift));
priv->mediachanged = true;
}
@ -4081,11 +4097,12 @@ static int mmcsd_probe(FAR struct mmcsd_state_s *priv)
/* Create a MMCSD device name */
priv->part.priv = priv;
snprintf(devname, sizeof(devname), "/dev/mmcsd%d", priv->minor);
/* Inode private data is a reference to the MMCSD state structure */
register_blockdriver(devname, &g_bops, 0666, priv);
register_blockdriver(devname, &g_bops, 0666, &priv->part);
}
/* Regardless of whether or not a card was successfully initialized,
@ -4366,7 +4383,7 @@ int mmcsd_slotinitialize(int minor, FAR struct sdio_dev_s *dev)
snprintf(devname, sizeof(devname), "/dev/mmcsd%d", minor);
finfo("MMC: %s %" PRIu64 "KB %s %s mode\n", devname,
((uint64_t)priv->nblocks << priv->blockshift) >> 10,
((uint64_t)priv->part.nblocks << priv->blockshift) >> 10,
priv->widebus ? "4-bits" : "1-bit",
mmc_get_mode_name(priv->mode));