aboutsummaryrefslogtreecommitdiff
path: root/drivers/mtd/ubi
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r--drivers/mtd/ubi/build.c69
-rw-r--r--drivers/mtd/ubi/eba.c15
-rw-r--r--drivers/mtd/ubi/ubi.h6
-rw-r--r--drivers/mtd/ubi/vmt.c2
-rw-r--r--drivers/mtd/ubi/vtbl.c11
-rw-r--r--drivers/mtd/ubi/wl.c1
6 files changed, 80 insertions, 24 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 8b4573559df..4e761e957de 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -366,9 +366,6 @@ static int uif_init(struct ubi_device *ubi)
int i, err;
dev_t dev;
- mutex_init(&ubi->volumes_mutex);
- spin_lock_init(&ubi->volumes_lock);
-
sprintf(ubi->ubi_name, UBI_NAME_STR "%d", ubi->ubi_num);
/*
@@ -624,6 +621,58 @@ static int io_init(struct ubi_device *ubi)
}
/**
+ * autoresize - re-size the volume which has the "auto-resize" flag set.
+ * @ubi: UBI device description object
+ * @vol_id: ID of the volume to re-size
+ *
+ * This function re-sizes the volume marked by the @UBI_VTBL_AUTORESIZE_FLG in
+ * the volume table to the largest possible size. See comments in ubi-header.h
+ * for more description of the flag. Returns zero in case of success and a
+ * negative error code in case of failure.
+ */
+static int autoresize(struct ubi_device *ubi, int vol_id)
+{
+ struct ubi_volume_desc desc;
+ struct ubi_volume *vol = ubi->volumes[vol_id];
+ int err, old_reserved_pebs = vol->reserved_pebs;
+
+ /*
+ * Clear the auto-resize flag in the volume in-memory copy of the
+ * volume table, and 'ubi_resize_volume()' will propogate this change
+ * to the flash.
+ */
+ ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG;
+
+ if (ubi->avail_pebs == 0) {
+ struct ubi_vtbl_record vtbl_rec;
+
+ /*
+ * No avalilable PEBs to re-size the volume, clear the flag on
+ * flash and exit.
+ */
+ memcpy(&vtbl_rec, &ubi->vtbl[vol_id],
+ sizeof(struct ubi_vtbl_record));
+ err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
+ if (err)
+ ubi_err("cannot clean auto-resize flag for volume %d",
+ vol_id);
+ } else {
+ desc.vol = vol;
+ err = ubi_resize_volume(&desc,
+ old_reserved_pebs + ubi->avail_pebs);
+ if (err)
+ ubi_err("cannot auto-resize volume %d", vol_id);
+ }
+
+ if (err)
+ return err;
+
+ ubi_msg("volume %d (\"%s\") re-sized from %d to %d LEBs", vol_id,
+ vol->name, old_reserved_pebs, vol->reserved_pebs);
+ return 0;
+}
+
+/**
* ubi_attach_mtd_dev - attach an MTD device.
* @mtd_dev: MTD device description object
* @ubi_num: number to assign to the new UBI device
@@ -699,6 +748,12 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
ubi->mtd = mtd;
ubi->ubi_num = ubi_num;
ubi->vid_hdr_offset = vid_hdr_offset;
+ ubi->autoresize_vol_id = -1;
+
+ mutex_init(&ubi->buf_mutex);
+ mutex_init(&ubi->ckvol_mutex);
+ mutex_init(&ubi->volumes_mutex);
+ spin_lock_init(&ubi->volumes_lock);
dbg_msg("attaching mtd%d to ubi%d: VID header offset %d",
mtd->index, ubi_num, vid_hdr_offset);
@@ -707,8 +762,6 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
if (err)
goto out_free;
- mutex_init(&ubi->buf_mutex);
- mutex_init(&ubi->ckvol_mutex);
ubi->peb_buf1 = vmalloc(ubi->peb_size);
if (!ubi->peb_buf1)
goto out_free;
@@ -730,6 +783,12 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
goto out_free;
}
+ if (ubi->autoresize_vol_id != -1) {
+ err = autoresize(ubi, ubi->autoresize_vol_id);
+ if (err)
+ goto out_detach;
+ }
+
err = uif_init(ubi);
if (err)
goto out_detach;
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 7c05c6e1abc..1f951e39c53 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -341,9 +341,6 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
{
int err, pnum, vol_id = vol->vol_id;
- ubi_assert(ubi->ref_count > 0);
- ubi_assert(vol->ref_count > 0);
-
if (ubi->ro_mode)
return -EROFS;
@@ -392,9 +389,6 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
struct ubi_vid_hdr *vid_hdr;
uint32_t uninitialized_var(crc);
- ubi_assert(ubi->ref_count > 0);
- ubi_assert(vol->ref_count > 0);
-
err = leb_read_lock(ubi, vol_id, lnum);
if (err)
return err;
@@ -618,9 +612,6 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
- ubi_assert(ubi->ref_count > 0);
- ubi_assert(vol->ref_count > 0);
-
if (ubi->ro_mode)
return -EROFS;
@@ -754,9 +745,6 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
- ubi_assert(ubi->ref_count > 0);
- ubi_assert(vol->ref_count > 0);
-
if (ubi->ro_mode)
return -EROFS;
@@ -871,9 +859,6 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
- ubi_assert(ubi->ref_count > 0);
- ubi_assert(vol->ref_count > 0);
-
if (ubi->ro_mode)
return -EROFS;
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 90cdcad83cb..a8cdbd0364f 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -250,9 +250,11 @@ struct ubi_wl_entry;
* @rsvd_pebs: count of reserved physical eraseblocks
* @avail_pebs: count of available physical eraseblocks
* @beb_rsvd_pebs: how many physical eraseblocks are reserved for bad PEB
- * handling
+ * handling
* @beb_rsvd_level: normal level of PEBs reserved for bad PEB handling
*
+ * @autoresize_vol_id: ID of the volume which has to be auto-resized at the end
+ * of UBI ititializetion
* @vtbl_slots: how many slots are available in the volume table
* @vtbl_size: size of the volume table in bytes
* @vtbl: in-RAM volume table copy
@@ -333,12 +335,14 @@ struct ubi_device {
int beb_rsvd_pebs;
int beb_rsvd_level;
+ int autoresize_vol_id;
int vtbl_slots;
int vtbl_size;
struct ubi_vtbl_record *vtbl;
struct mutex volumes_mutex;
int max_ec;
+ /* TODO: mean_ec is not updated run-time, fix */
int mean_ec;
/* EBA unit's stuff */
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 221ce70be56..a3ca2257e60 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -497,8 +497,6 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
dbg_msg("re-size volume %d to from %d to %d PEBs",
vol_id, vol->reserved_pebs, reserved_pebs);
- ubi_assert(desc->mode == UBI_EXCLUSIVE);
- ubi_assert(vol == ubi->volumes[vol_id]);
if (vol->vol_type == UBI_STATIC_VOLUME &&
reserved_pebs < vol->used_ebs) {
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 7a1a8a1da61..2fd9cf4cea7 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -514,6 +514,17 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
vol->name[vol->name_len] = '\0';
vol->vol_id = i;
+ if (vtbl[i].flags & UBI_VTBL_AUTORESIZE_FLG) {
+ /* Auto re-size flag may be set only for one volume */
+ if (ubi->autoresize_vol_id != -1) {
+ ubi_err("more then one auto-resize volume (%d "
+ "and %d)", ubi->autoresize_vol_id, i);
+ return -EINVAL;
+ }
+
+ ubi->autoresize_vol_id = i;
+ }
+
ubi_assert(!ubi->volumes[i]);
ubi->volumes[i] = vol;
ubi->vol_count += 1;
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 1142aabcfc8..8bfb7434c99 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1303,7 +1303,6 @@ int ubi_wl_flush(struct ubi_device *ubi)
* Make sure all the works which have been done in parallel are
* finished.
*/
- ubi_assert(ubi->ref_count > 0);
down_write(&ubi->work_sem);
up_write(&ubi->work_sem);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 09:47:42 +0000