extmod/vfs_blockdev: Factor out block device interface code.

1 files changed, 6 insertions, 0 deletions

diff --git a/extmod/vfs.h b/extmod/vfs.h
index 85b020faa..e626a14df 100644
--- a/extmod/vfs.h
+++ b/extmod/vfs.h
@@ -58,6 +58,7 @@ typedef struct _mp_vfs_proto_t {
 
 typedef struct _mp_vfs_blockdev_t {
     uint16_t flags;
+    size_t block_size;
     mp_obj_t readblocks[4];
     mp_obj_t writeblocks[4];
     // new protocol uses just ioctl, old uses sync (optional) and count
@@ -77,6 +78,11 @@ typedef struct _mp_vfs_mount_t {
     struct _mp_vfs_mount_t *next;
 } mp_vfs_mount_t;
 
+void mp_vfs_blockdev_init(mp_vfs_blockdev_t *self, mp_obj_t bdev);
+int mp_vfs_blockdev_read(mp_vfs_blockdev_t *self, size_t block_num, size_t num_blocks, uint8_t *buf);
+int mp_vfs_blockdev_write(mp_vfs_blockdev_t *self, size_t block_num, size_t num_blocks, const uint8_t *buf);
+mp_obj_t mp_vfs_blockdev_ioctl(mp_vfs_blockdev_t *self, uintptr_t cmd, uintptr_t arg);
+
 mp_vfs_mount_t *mp_vfs_lookup_path(const char *path, const char **path_out);
 mp_import_stat_t mp_vfs_import_stat(const char *path);
 mp_obj_t mp_vfs_mount(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args);