diff options
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/ubi/attach.c | 40 | ||||
| -rw-r--r-- | drivers/mtd/ubi/eba.c | 81 | ||||
| -rw-r--r-- | drivers/mtd/ubi/fastmap.c | 71 | ||||
| -rw-r--r-- | drivers/mtd/ubi/io.c | 39 | ||||
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 97 | ||||
| -rw-r--r-- | drivers/mtd/ubi/vtbl.c | 13 | ||||
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 19 |
7 files changed, 218 insertions, 142 deletions
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c index 507f5d6..93ceea4 100644 --- a/drivers/mtd/ubi/attach.c +++ b/drivers/mtd/ubi/attach.c @@ -453,7 +453,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, { int len, err, second_is_newer, bitflips = 0, corrupted = 0; uint32_t data_crc, crc; - struct ubi_vid_hdr *vh = NULL; + struct ubi_vid_io_buf *vidb = NULL; unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum); if (sqnum2 == aeb->sqnum) { @@ -496,12 +496,12 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, return bitflips << 1; } - vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!vh) + vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!vidb) return -ENOMEM; pnum = aeb->pnum; - err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0); + err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 0); if (err) { if (err == UBI_IO_BITFLIPS) bitflips = 1; @@ -515,7 +515,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, } } - vid_hdr = vh; + vid_hdr = ubi_get_vid_hdr(vidb); } /* Read the data of the copy and check the CRC */ @@ -541,7 +541,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, } mutex_unlock(&ubi->buf_mutex); - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vidb); if (second_is_newer) dbg_bld("second PEB %d is newer, copy_flag is set", pnum); @@ -553,7 +553,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, out_unlock: mutex_unlock(&ubi->buf_mutex); out_free_vidh: - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vidb); return err; } @@ -955,7 +955,8 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum, bool fast) { struct ubi_ec_hdr *ech = ai->ech; - struct ubi_vid_hdr *vidh = ai->vidh; + struct ubi_vid_io_buf *vidb = ai->vidb; + struct ubi_vid_hdr *vidh = ubi_get_vid_hdr(vidb); long long ec; int err, bitflips = 0, vol_id = -1, ec_err = 0; @@ -1053,7 +1054,7 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai, /* OK, we've done with the EC header, let's look at the VID header */ - err = ubi_io_read_vid_hdr(ubi, pnum, vidh, 0); + err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 0); if (err < 0) return err; switch (err) { @@ -1396,8 +1397,8 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai, if (!ai->ech) return err; - ai->vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!ai->vidh) + ai->vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!ai->vidb) goto out_ech; for (pnum = start; pnum < ubi->peb_count; pnum++) { @@ -1446,13 +1447,13 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai, if (err) goto out_vidh; - ubi_free_vid_hdr(ubi, ai->vidh); + ubi_free_vid_buf(ai->vidb); kfree(ai->ech); return 0; out_vidh: - ubi_free_vid_hdr(ubi, ai->vidh); + ubi_free_vid_buf(ai->vidb); out_ech: kfree(ai->ech); return err; @@ -1510,8 +1511,8 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) if (!scan_ai->ech) goto out_ai; - scan_ai->vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!scan_ai->vidh) + scan_ai->vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!scan_ai->vidb) goto out_ech; for (pnum = 0; pnum < UBI_FM_MAX_START; pnum++) { @@ -1523,7 +1524,7 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) goto out_vidh; } - ubi_free_vid_hdr(ubi, scan_ai->vidh); + ubi_free_vid_buf(scan_ai->vidb); kfree(scan_ai->ech); if (scan_ai->force_full_scan) @@ -1544,7 +1545,7 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) return err; out_vidh: - ubi_free_vid_hdr(ubi, scan_ai->vidh); + ubi_free_vid_buf(scan_ai->vidb); out_ech: kfree(scan_ai->ech); out_ai: @@ -1668,7 +1669,8 @@ out_ai: */ static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai) { - struct ubi_vid_hdr *vidh = ai->vidh; + struct ubi_vid_io_buf *vidb = ai->vidb; + struct ubi_vid_hdr *vidh = ubi_get_vid_hdr(vidb); int pnum, err, vols_found = 0; struct rb_node *rb1, *rb2; struct ubi_ainf_volume *av; @@ -1804,7 +1806,7 @@ static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai) last_aeb = aeb; - err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidh, 1); + err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidb, 1); if (err && err != UBI_IO_BITFLIPS) { ubi_err(ubi, "VID header is not OK (%d)", err); diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index 884c91f..ddf4e63 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -513,6 +513,7 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, void *buf, int offset, int len, int check) { int err, pnum, scrub = 0, vol_id = vol->vol_id; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; uint32_t uninitialized_var(crc); @@ -543,13 +544,15 @@ int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, retry: if (check) { - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) { + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) { err = -ENOMEM; goto out_unlock; } - err = ubi_io_read_vid_hdr(ubi, pnum, vid_hdr, 1); + vid_hdr = ubi_get_vid_hdr(vidb); + + err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 1); if (err && err != UBI_IO_BITFLIPS) { if (err > 0) { /* @@ -595,7 +598,7 @@ retry: ubi_assert(len == be32_to_cpu(vid_hdr->data_size)); crc = be32_to_cpu(vid_hdr->data_crc); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); } err = ubi_io_read_data(ubi, buf, pnum, offset, len); @@ -632,7 +635,7 @@ retry: return err; out_free: - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); out_unlock: leb_read_unlock(ubi, vol_id, lnum); return err; @@ -701,7 +704,7 @@ int ubi_eba_read_leb_sg(struct ubi_device *ubi, struct ubi_volume *vol, * @buf: data which was not written because of the write failure * @offset: offset of the failed write * @len: how many bytes should have been written - * @vid: VID header + * @vidb: VID buffer * @retry: whether the caller should retry in case of failure * * This function is called in case of a write failure and moves all good data @@ -713,9 +716,10 @@ int ubi_eba_read_leb_sg(struct ubi_device *ubi, struct ubi_volume *vol, */ static int try_recover_peb(struct ubi_volume *vol, int pnum, int lnum, const void *buf, int offset, int len, - struct ubi_vid_hdr *vid_hdr, bool *retry) + struct ubi_vid_io_buf *vidb, bool *retry) { struct ubi_device *ubi = vol->ubi; + struct ubi_vid_hdr *vid_hdr; int new_pnum, err, vol_id = vol->vol_id, data_size; uint32_t crc; @@ -730,7 +734,7 @@ static int try_recover_peb(struct ubi_volume *vol, int pnum, int lnum, ubi_msg(ubi, "recover PEB %d, move data to PEB %d", pnum, new_pnum); - err = ubi_io_read_vid_hdr(ubi, pnum, vid_hdr, 1); + err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 1); if (err && err != UBI_IO_BITFLIPS) { if (err > 0) err = -EIO; @@ -759,7 +763,7 @@ static int try_recover_peb(struct ubi_volume *vol, int pnum, int lnum, vid_hdr->copy_flag = 1; vid_hdr->data_size = cpu_to_be32(data_size); vid_hdr->data_crc = cpu_to_be32(crc); - err = ubi_io_write_vid_hdr(ubi, new_pnum, vid_hdr); + err = ubi_io_write_vid_hdr(ubi, new_pnum, vidb); if (err) goto out_unlock; @@ -810,24 +814,24 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum, { int err, idx = vol_id2idx(ubi, vol_id), tries; struct ubi_volume *vol = ubi->volumes[idx]; - struct ubi_vid_hdr *vid_hdr; + struct ubi_vid_io_buf *vidb; - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) return -ENOMEM; for (tries = 0; tries <= UBI_IO_RETRIES; tries++) { bool retry; - err = try_recover_peb(vol, pnum, lnum, buf, offset, len, - vid_hdr, &retry); + err = try_recover_peb(vol, pnum, lnum, buf, offset, len, vidb, + &retry); if (!err || !retry) break; ubi_msg(ubi, "try again"); } - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; } @@ -836,7 +840,7 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum, * try_write_vid_and_data - try to write VID header and data to a new PEB. * @vol: volume description object * @lnum: logical eraseblock number - * @vid_hdr: VID header to write + * @vidb: the VID buffer to write * @buf: buffer containing the data * @offset: where to start writing data * @len: how many bytes should be written @@ -848,7 +852,7 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum, * flash media, but may be some garbage. */ static int try_write_vid_and_data(struct ubi_volume *vol, int lnum, - struct ubi_vid_hdr *vid_hdr, const void *buf, + struct ubi_vid_io_buf *vidb, const void *buf, int offset, int len) { struct ubi_device *ubi = vol->ubi; @@ -865,7 +869,7 @@ static int try_write_vid_and_data(struct ubi_volume *vol, int lnum, dbg_eba("write VID hdr and %d bytes at offset %d of LEB %d:%d, PEB %d", len, offset, vol_id, lnum, pnum); - err = ubi_io_write_vid_hdr(ubi, pnum, vid_hdr); + err = ubi_io_write_vid_hdr(ubi, pnum, vidb); if (err) { ubi_warn(ubi, "failed to write VID header to LEB %d:%d, PEB %d", vol_id, lnum, pnum); @@ -914,6 +918,7 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, const void *buf, int offset, int len) { int err, pnum, tries, vol_id = vol->vol_id; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; if (ubi->ro_mode) @@ -943,12 +948,14 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, * The logical eraseblock is not mapped. We have to get a free physical * eraseblock and write the volume identifier header there first. */ - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) { + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) { leb_write_unlock(ubi, vol_id, lnum); return -ENOMEM; } + vid_hdr = ubi_get_vid_hdr(vidb); + vid_hdr->vol_type = UBI_VID_DYNAMIC; vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi)); vid_hdr->vol_id = cpu_to_be32(vol_id); @@ -957,8 +964,7 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, vid_hdr->data_pad = cpu_to_be32(vol->data_pad); for (tries = 0; tries <= UBI_IO_RETRIES; tries++) { - err = try_write_vid_and_data(vol, lnum, vid_hdr, buf, offset, - len); + err = try_write_vid_and_data(vol, lnum, vidb, buf, offset, len); if (err != -EIO || !ubi->bad_allowed) break; @@ -972,7 +978,7 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, ubi_msg(ubi, "try another PEB"); } - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); out: if (err) @@ -1009,6 +1015,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, const void *buf, int len, int used_ebs) { int err, tries, data_size = len, vol_id = vol->vol_id; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; uint32_t crc; @@ -1021,10 +1028,12 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, else ubi_assert(!(len & (ubi->min_io_size - 1))); - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) return -ENOMEM; + vid_hdr = ubi_get_vid_hdr(vidb); + err = leb_write_lock(ubi, vol_id, lnum); if (err) goto out; @@ -1044,7 +1053,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, ubi_assert(vol->eba_tbl->entries[lnum].pnum < 0); for (tries = 0; tries <= UBI_IO_RETRIES; tries++) { - err = try_write_vid_and_data(vol, lnum, vid_hdr, buf, 0, len); + err = try_write_vid_and_data(vol, lnum, vidb, buf, 0, len); if (err != -EIO || !ubi->bad_allowed) break; @@ -1058,7 +1067,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, leb_write_unlock(ubi, vol_id, lnum); out: - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; } @@ -1084,6 +1093,7 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, const void *buf, int len) { int err, tries, vol_id = vol->vol_id; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; uint32_t crc; @@ -1101,10 +1111,12 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0); } - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) return -ENOMEM; + vid_hdr = ubi_get_vid_hdr(vidb); + mutex_lock(&ubi->alc_mutex); err = leb_write_lock(ubi, vol_id, lnum); if (err) @@ -1125,7 +1137,7 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, dbg_eba("change LEB %d:%d", vol_id, lnum); for (tries = 0; tries <= UBI_IO_RETRIES; tries++) { - err = try_write_vid_and_data(vol, lnum, vid_hdr, buf, 0, len); + err = try_write_vid_and_data(vol, lnum, vidb, buf, 0, len); if (err != -EIO || !ubi->bad_allowed) break; @@ -1145,7 +1157,7 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, out_mutex: mutex_unlock(&ubi->alc_mutex); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; } @@ -1191,9 +1203,10 @@ static int is_error_sane(int err) * o a negative error code in case of failure. */ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, - struct ubi_vid_hdr *vid_hdr) + struct ubi_vid_io_buf *vidb) { int err, vol_id, lnum, data_size, aldata_size, idx; + struct ubi_vid_hdr *vid_hdr = ubi_get_vid_hdr(vidb); struct ubi_volume *vol; uint32_t crc; @@ -1305,7 +1318,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, } vid_hdr->sqnum = cpu_to_be64(ubi_next_sqnum(ubi)); - err = ubi_io_write_vid_hdr(ubi, to, vid_hdr); + err = ubi_io_write_vid_hdr(ubi, to, vidb); if (err) { if (err == -EIO) err = MOVE_TARGET_WR_ERR; @@ -1315,7 +1328,7 @@ int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, cond_resched(); /* Read the VID header back and check if it was written correctly */ - err = ubi_io_read_vid_hdr(ubi, to, vid_hdr, 1); + err = ubi_io_read_vid_hdr(ubi, to, vidb, 1); if (err) { if (err != UBI_IO_BITFLIPS) { ubi_warn(ubi, "error %d while reading VID header back from PEB %d", diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c index 27a94f2..4adffb8 100644 --- a/drivers/mtd/ubi/fastmap.c +++ b/drivers/mtd/ubi/fastmap.c @@ -110,21 +110,23 @@ size_t ubi_calc_fm_size(struct ubi_device *ubi) * Returns a new struct ubi_vid_hdr on success. * NULL indicates out of memory. */ -static struct ubi_vid_hdr *new_fm_vhdr(struct ubi_device *ubi, int vol_id) +static struct ubi_vid_io_buf *new_fm_vbuf(struct ubi_device *ubi, int vol_id) { - struct ubi_vid_hdr *new; + struct ubi_vid_io_buf *new; + struct ubi_vid_hdr *vh; - new = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); + new = ubi_alloc_vid_buf(ubi, GFP_KERNEL); if (!new) goto out; - new->vol_type = UBI_VID_DYNAMIC; - new->vol_id = cpu_to_be32(vol_id); + vh = ubi_get_vid_hdr(new); + vh->vol_type = UBI_VID_DYNAMIC; + vh->vol_id = cpu_to_be32(vol_id); /* UBI implementations without fastmap support have to delete the * fastmap. */ - new->compat = UBI_COMPAT_DELETE; + vh->compat = UBI_COMPAT_DELETE; out: return new; @@ -408,6 +410,7 @@ static int scan_pool(struct ubi_device *ubi, struct ubi_attach_info *ai, __be32 *pebs, int pool_size, unsigned long long *max_sqnum, struct list_head *free) { + struct ubi_vid_io_buf *vb; struct ubi_vid_hdr *vh; struct ubi_ec_hdr *ech; struct ubi_ainf_peb *new_aeb; @@ -417,12 +420,14 @@ static int scan_pool(struct ubi_device *ubi, struct ubi_attach_info *ai, if (!ech) return -ENOMEM; - vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!vh) { + vb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!vb) { kfree(ech); return -ENOMEM; } + vh = ubi_get_vid_hdr(vb); + dbg_bld("scanning fastmap pool: size = %i", pool_size); /* @@ -463,7 +468,7 @@ static int scan_pool(struct ubi_device *ubi, struct ubi_attach_info *ai, goto out; } - err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0); + err = ubi_io_read_vid_hdr(ubi, pnum, vb, 0); if (err == UBI_IO_FF || err == UBI_IO_FF_BITFLIPS) { unsigned long long ec = be64_to_cpu(ech->ec); unmap_peb(ai, pnum); @@ -509,7 +514,7 @@ static int scan_pool(struct ubi_device *ubi, struct ubi_attach_info *ai, } out: - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vb); kfree(ech); return ret; } @@ -837,6 +842,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, struct ubi_attach_info *scan_ai) { struct ubi_fm_sb *fmsb, *fmsb2; + struct ubi_vid_io_buf *vb; struct ubi_vid_hdr *vh; struct ubi_ec_hdr *ech; struct ubi_fastmap_layout *fm; @@ -912,12 +918,14 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, goto free_fm_sb; } - vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!vh) { + vb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!vb) { ret = -ENOMEM; goto free_hdr; } + vh = ubi_get_vid_hdr(vb); + for (i = 0; i < used_blocks; i++) { int image_seq; @@ -960,7 +968,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, goto free_hdr; } - ret = ubi_io_read_vid_hdr(ubi, pnum, vh, 0); + ret = ubi_io_read_vid_hdr(ubi, pnum, vb, 0); if (ret && ret != UBI_IO_BITFLIPS) { ubi_err(ubi, "unable to read fastmap block# %i (PEB: %i)", i, pnum); @@ -1050,7 +1058,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, ubi->fm_disabled = 0; ubi->fast_attach = 1; - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vb); kfree(ech); out: up_write(&ubi->fm_protect); @@ -1059,7 +1067,7 @@ out: return ret; free_hdr: - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vb); kfree(ech); free_fm_sb: kfree(fmsb); @@ -1087,6 +1095,7 @@ static int ubi_write_fastmap(struct ubi_device *ubi, struct ubi_fm_eba *feba; struct ubi_wl_entry *wl_e; struct ubi_volume *vol; + struct ubi_vid_io_buf *avbuf, *dvbuf; struct ubi_vid_hdr *avhdr, *dvhdr; struct ubi_work *ubi_wrk; struct rb_node *tmp_rb; @@ -1097,18 +1106,21 @@ static int ubi_write_fastmap(struct ubi_device *ubi, fm_raw = ubi->fm_buf; memset(ubi->fm_buf, 0, ubi->fm_size); - avhdr = new_fm_vhdr(ubi, UBI_FM_SB_VOLUME_ID); - if (!avhdr) { + avbuf = new_fm_vbuf(ubi, UBI_FM_SB_VOLUME_ID); + if (!avbuf) { ret = -ENOMEM; goto out; } - dvhdr = new_fm_vhdr(ubi, UBI_FM_DATA_VOLUME_ID); - if (!dvhdr) { + dvbuf = new_fm_vbuf(ubi, UBI_FM_DATA_VOLUME_ID); + if (!dvbuf) { ret = -ENOMEM; goto out_kfree; } + avhdr = ubi_get_vid_hdr(avbuf); + dvhdr = ubi_get_vid_hdr(dvbuf); + seen_pebs = init_seen(ubi); if (IS_ERR(seen_pebs)) { ret = PTR_ERR(seen_pebs); @@ -1277,7 +1289,7 @@ static int ubi_write_fastmap(struct ubi_device *ubi, spin_unlock(&ubi->volumes_lock); dbg_bld("writing fastmap SB to PEB %i", new_fm->e[0]->pnum); - ret = ubi_io_write_vid_hdr(ubi, new_fm->e[0]->pnum, avhdr); + ret = ubi_io_write_vid_hdr(ubi, new_fm->e[0]->pnum, avbuf); if (ret) { ubi_err(ubi, "unable to write vid_hdr to fastmap SB!"); goto out_kfree; @@ -1298,7 +1310,7 @@ static int ubi_write_fastmap(struct ubi_device *ubi, dvhdr->lnum = cpu_to_be32(i); dbg_bld("writing fastmap data to PEB %i sqnum %llu", new_fm->e[i]->pnum, be64_to_cpu(dvhdr->sqnum)); - ret = ubi_io_write_vid_hdr(ubi, new_fm->e[i]->pnum, dvhdr); + ret = ubi_io_write_vid_hdr(ubi, new_fm->e[i]->pnum, dvbuf); if (ret) { ubi_err(ubi, "unable to write vid_hdr to PEB %i!", new_fm->e[i]->pnum); @@ -1323,8 +1335,8 @@ static int ubi_write_fastmap(struct ubi_device *ubi, dbg_bld("fastmap written!"); out_kfree: - ubi_free_vid_hdr(ubi, avhdr); - ubi_free_vid_hdr(ubi, dvhdr); + ubi_free_vid_buf(avbuf); + ubi_free_vid_buf(dvbuf); free_seen(seen_pebs); out: return ret; @@ -1394,7 +1406,8 @@ static int invalidate_fastmap(struct ubi_device *ubi) int ret; struct ubi_fastmap_layout *fm; struct ubi_wl_entry *e; - struct ubi_vid_hdr *vh = NULL; + struct ubi_vid_io_buf *vb = NULL; + struct ubi_vid_hdr *vh; if (!ubi->fm) return 0; @@ -1406,10 +1419,12 @@ static int invalidate_fastmap(struct ubi_device *ubi) if (!fm) goto out; - vh = new_fm_vhdr(ubi, UBI_FM_SB_VOLUME_ID); - if (!vh) + vb = new_fm_vbuf(ubi, UBI_FM_SB_VOLUME_ID); + if (!vb) goto out_free_fm; + vh = ubi_get_vid_hdr(vb); + ret = -ENOSPC; e = ubi_wl_get_fm_peb(ubi, 1); if (!e) @@ -1420,7 +1435,7 @@ static int invalidate_fastmap(struct ubi_device *ubi) * to scanning mode. */ vh->sqnum = cpu_to_be64(ubi_next_sqnum(ubi)); - ret = ubi_io_write_vid_hdr(ubi, e->pnum, vh); + ret = ubi_io_write_vid_hdr(ubi, e->pnum, vb); if (ret < 0) { ubi_wl_put_fm_peb(ubi, e, 0, 0); goto out_free_fm; @@ -1432,7 +1447,7 @@ static int invalidate_fastmap(struct ubi_device *ubi) ubi->fm = fm; out: - ubi_free_vid_hdr(ubi, vh); + ubi_free_vid_buf(vb); return ret; out_free_fm: diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c index ff8cafe..b6fb8f9 100644 --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -502,6 +502,7 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum) loff_t addr; uint32_t data = 0; struct ubi_ec_hdr ec_hdr; + struct ubi_vid_io_buf vidb; /* * Note, we cannot generally define VID header buffers on stack, @@ -528,7 +529,10 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum) goto error; } - err = ubi_io_read_vid_hdr(ubi, pnum, &vid_hdr, 0); + ubi_init_vid_buf(ubi, &vidb, &vid_hdr); + ubi_assert(&vid_hdr == ubi_get_vid_hdr(&vidb)); + + err = ubi_io_read_vid_hdr(ubi, pnum, &vidb, 0); if (err != UBI_IO_BAD_HDR_EBADMSG && err != UBI_IO_BAD_HDR && err != UBI_IO_FF){ addr += ubi->vid_hdr_aloffset; @@ -995,12 +999,11 @@ bad: * ubi_io_read_vid_hdr - read and check a volume identifier header. * @ubi: UBI device description object * @pnum: physical eraseblock number to read from - * @vid_hdr: &struct ubi_vid_hdr object where to store the read volume - * identifier header + * @vidb: the volume identifier buffer to store data in * @verbose: be verbose if the header is corrupted or wasn't found * * This function reads the volume identifier header from physical eraseblock - * @pnum and stores it in @vid_hdr. It also checks CRC checksum of the read + * @pnum and stores it in @vidb. It also checks CRC checksum of the read * volume identifier header. The error codes are the same as in * 'ubi_io_read_ec_hdr()'. * @@ -1008,16 +1011,16 @@ bad: * 'ubi_io_read_ec_hdr()', so refer commentaries in 'ubi_io_read_ec_hdr()'. */ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum, - struct ubi_vid_hdr *vid_hdr, int verbose) + struct ubi_vid_io_buf *vidb, int verbose) { int err, read_err; uint32_t crc, magic, hdr_crc; - void *p; + struct ubi_vid_hdr *vid_hdr = ubi_get_vid_hdr(vidb); + void *p = vidb->buffer; dbg_io("read VID header from PEB %d", pnum); ubi_assert(pnum >= 0 && pnum < ubi->peb_count); - p = (char *)vid_hdr - ubi->vid_hdr_shift; read_err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_shift + UBI_VID_HDR_SIZE); if (read_err && read_err != UBI_IO_BITFLIPS && !mtd_is_eccerr(read_err)) @@ -1080,23 +1083,24 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum, * ubi_io_write_vid_hdr - write a volume identifier header. * @ubi: UBI device description object * @pnum: the physical eraseblock number to write to - * @vid_hdr: the volume identifier header to write + * @vidb: the volume identifier buffer to write * * This function writes the volume identifier header described by @vid_hdr to * physical eraseblock @pnum. This function automatically fills the - * @vid_hdr->magic and the @vid_hdr->version fields, as well as calculates - * header CRC checksum and stores it at vid_hdr->hdr_crc. + * @vidb->hdr->magic and the @vidb->hdr->version fields, as well as calculates + * header CRC checksum and stores it at vidb->hdr->hdr_crc. * * This function returns zero in case of success and a negative error code in * case of failure. If %-EIO is returned, the physical eraseblock probably went * bad. */ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, - struct ubi_vid_hdr *vid_hdr) + struct ubi_vid_io_buf *vidb) { + struct ubi_vid_hdr *vid_hdr = ubi_get_vid_hdr(vidb); int err; uint32_t crc; - void *p; + void *p = vidb->buffer; dbg_io("write VID header to PEB %d", pnum); ubi_assert(pnum >= 0 && pnum < ubi->peb_count); @@ -1117,7 +1121,6 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, if (ubi_dbg_power_cut(ubi, POWER_CUT_VID_WRITE)) return -EROFS; - p = (char *)vid_hdr - ubi->vid_hdr_shift; err = ubi_io_write(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_alsize); return err; @@ -1283,17 +1286,19 @@ static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum) { int err; uint32_t crc, hdr_crc; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; void *p; if (!ubi_dbg_chk_io(ubi)) return 0; - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) return -ENOMEM; - p = (char *)vid_hdr - ubi->vid_hdr_shift; + vid_hdr = ubi_get_vid_hdr(vidb); + p = vidb->buffer; err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset, ubi->vid_hdr_alsize); if (err && err != UBI_IO_BITFLIPS && !mtd_is_eccerr(err)) @@ -1314,7 +1319,7 @@ static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum) err = self_check_vid_hdr(ubi, pnum, vid_hdr); exit: - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; } diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index bc14522..697dbcb 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -167,6 +167,17 @@ enum { }; /** + * struct ubi_vid_io_buf - VID buffer used to read/write VID info to/from the + * flash. + * @hdr: a pointer to the VID header stored in buffer + * @buffer: underlying buffer + */ +struct ubi_vid_io_buf { + struct ubi_vid_hdr *hdr; + void *buffer; +}; + +/** * struct ubi_wl_entry - wear-leveling entry. * @u.rb: link in the corresponding (free/used) RB-tree * @u.list: link in the protection queue @@ -740,7 +751,7 @@ struct ubi_ainf_volume { * @ec_count: a temporary variable used when calculating @mean_ec * @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects * @ech: temporary EC header. Only available during scan - * @vidh: temporary VID header. Only available during scan + * @vidh: temporary VID buffer. Only available during scan * * This data structure contains the result of attaching an MTD device and may * be used by other UBI sub-systems to build final UBI data structures, further @@ -770,7 +781,7 @@ struct ubi_attach_info { int ec_count; struct kmem_cache *aeb_slab_cache; struct ubi_ec_hdr *ech; - struct ubi_vid_hdr *vidh; + struct ubi_vid_io_buf *vidb; }; /** @@ -887,7 +898,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol, int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol, int lnum, const void *buf, int len); int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to, - struct ubi_vid_hdr *vid_hdr); + struct ubi_vid_io_buf *vidb); int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai); unsigned long long ubi_next_sqnum(struct ubi_device *ubi); int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap, @@ -922,9 +933,9 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum, struct ubi_ec_hdr *ec_hdr); int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum, - struct ubi_vid_hdr *vid_hdr, int verbose); + struct ubi_vid_io_buf *vidb, int verbose); int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum, - struct ubi_vid_hdr *vid_hdr); + struct ubi_vid_io_buf *vidb); /* build.c */ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, @@ -1045,44 +1056,68 @@ static inline void ubi_move_aeb_to_list(struct ubi_ainf_volume *av, } /** - * ubi_zalloc_vid_hdr - allocate a volume identifier header object. - * @ubi: UBI device description object - * @gfp_flags: GFP flags to allocate with - * - * This function returns a pointer to the newly allocated and zero-filled - * volume identifier header object in case of success and %NULL in case of - * failure. + * ubi_init_vid_buf - Initialize a VID buffer + * @ubi: the UBI device + * @vidb: the VID buffer to initialize + * @buf: the underlying buffer + */ +static inline void ubi_init_vid_buf(const struct ubi_device *ubi, + struct ubi_vid_io_buf *vidb, + void *buf) +{ + if (buf) + memset(buf, 0, ubi->vid_hdr_alsize); + + vidb->buffer = buf; + vidb->hdr = buf + ubi->vid_hdr_shift; +} + +/** + * ubi_init_vid_buf - Allocate a VID buffer + * @ubi: the UBI device + * @gfp_flags: GFP flags to use for the allocation */ -static inline struct ubi_vid_hdr * -ubi_zalloc_vid_hdr(const struct ubi_device *ubi, gfp_t gfp_flags) +static inline struct ubi_vid_io_buf * +ubi_alloc_vid_buf(const struct ubi_device *ubi, gfp_t gfp_flags) { - void *vid_hdr; + struct ubi_vid_io_buf *vidb; + void *buf; - vid_hdr = kzalloc(ubi->vid_hdr_alsize, gfp_flags); - if (!vid_hdr) + vidb = kzalloc(sizeof(*vidb), gfp_flags); + if (!vidb) return NULL; - /* - * VID headers may be stored at un-aligned flash offsets, so we shift - * the pointer. - */ - return vid_hdr + ubi->vid_hdr_shift; + buf = kmalloc(ubi->vid_hdr_alsize, gfp_flags); + if (!buf) { + kfree(vidb); + return NULL; + } + + ubi_init_vid_buf(ubi, vidb, buf); + + return vidb; } /** - * ubi_free_vid_hdr - free a volume identifier header object. - * @ubi: UBI device description object - * @vid_hdr: the object to free + * ubi_free_vid_buf - Free a VID buffer + * @vidb: the VID buffer to free */ -static inline void ubi_free_vid_hdr(const struct ubi_device *ubi, - struct ubi_vid_hdr *vid_hdr) +static inline void ubi_free_vid_buf(struct ubi_vid_io_buf *vidb) { - void *p = vid_hdr; - - if (!p) + if (!vidb) return; - kfree(p - ubi->vid_hdr_shift); + kfree(vidb->buffer); + kfree(vidb); +} + +/** + * ubi_get_vid_hdr - Get the VID header attached to a VID buffer + * @vidb: VID buffer + */ +static inline struct ubi_vid_hdr *ubi_get_vid_hdr(struct ubi_vid_io_buf *vidb) +{ + return vidb->hdr; } /* diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c index 9e14577..263743e 100644 --- a/drivers/mtd/ubi/vtbl.c +++ b/drivers/mtd/ubi/vtbl.c @@ -299,15 +299,18 @@ static int create_vtbl(struct ubi_device *ubi, struct ubi_attach_info *ai, int copy, void *vtbl) { int err, tries = 0; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; struct ubi_ainf_peb *new_aeb; dbg_gen("create volume table (copy #%d)", copy + 1); - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL); + if (!vidb) return -ENOMEM; + vid_hdr = ubi_get_vid_hdr(vidb); + retry: new_aeb = ubi_early_get_peb(ubi, ai); if (IS_ERR(new_aeb)) { @@ -324,7 +327,7 @@ retry: vid_hdr->sqnum = cpu_to_be64(++ai->max_sqnum); /* The EC header is already there, write the VID header */ - err = ubi_io_write_vid_hdr(ubi, new_aeb->pnum, vid_hdr); + err = ubi_io_write_vid_hdr(ubi, new_aeb->pnum, vidb); if (err) goto write_error; @@ -339,7 +342,7 @@ retry: */ err = ubi_add_to_av(ubi, ai, new_aeb->pnum, new_aeb->ec, vid_hdr, 0); ubi_free_aeb(ai, new_aeb); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; write_error: @@ -353,7 +356,7 @@ write_error: } ubi_free_aeb(ai, new_aeb); out_free: - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return err; } diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index f453326..6351e8a 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -649,6 +649,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, int anchor = wrk->anchor; #endif struct ubi_wl_entry *e1, *e2; + struct ubi_vid_io_buf *vidb; struct ubi_vid_hdr *vid_hdr; int dst_leb_clean = 0; @@ -656,10 +657,12 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, if (shutdown) return 0; - vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS); - if (!vid_hdr) + vidb = ubi_alloc_vid_buf(ubi, GFP_NOFS); + if (!vidb) return -ENOMEM; + vid_hdr = ubi_get_vid_hdr(vidb); + mutex_lock(&ubi->move_mutex); spin_lock(&ubi->wl_lock); ubi_assert(!ubi->move_from && !ubi->move_to); @@ -753,7 +756,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, * which is being moved was unmapped. */ - err = ubi_io_read_vid_hdr(ubi, e1->pnum, vid_hdr, 0); + err = ubi_io_read_vid_hdr(ubi, e1->pnum, vidb, 0); if (err && err != UBI_IO_BITFLIPS) { dst_leb_clean = 1; if (err == UBI_IO_FF) { @@ -790,7 +793,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, vol_id = be32_to_cpu(vid_hdr->vol_id); lnum = be32_to_cpu(vid_hdr->lnum); - err = ubi_eba_copy_leb(ubi, e1->pnum, e2->pnum, vid_hdr); + err = ubi_eba_copy_leb(ubi, e1->pnum, e2->pnum, vidb); if (err) { if (err == MOVE_CANCEL_RACE) { /* @@ -847,7 +850,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, if (scrubbing) ubi_msg(ubi, "scrubbed PEB %d (LEB %d:%d), data moved to PEB %d", e1->pnum, vol_id, lnum, e2->pnum); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); spin_lock(&ubi->wl_lock); if (!ubi->move_to_put) { @@ -913,7 +916,7 @@ out_not_moved: ubi->wl_scheduled = 0; spin_unlock(&ubi->wl_lock); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); if (dst_leb_clean) { ensure_wear_leveling(ubi, 1); } else { @@ -937,7 +940,7 @@ out_error: ubi->move_to_put = ubi->wl_scheduled = 0; spin_unlock(&ubi->wl_lock); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); wl_entry_destroy(ubi, e1); wl_entry_destroy(ubi, e2); @@ -951,7 +954,7 @@ out_cancel: ubi->wl_scheduled = 0; spin_unlock(&ubi->wl_lock); mutex_unlock(&ubi->move_mutex); - ubi_free_vid_hdr(ubi, vid_hdr); + ubi_free_vid_buf(vidb); return 0; } |