* 2^(3*MAX_LEVEL+4)
*
* Thus a max level of 8 supports files with up to 2^^28 chunks which gives
- * a maximum file size of arounf 51Gbytees with 2k chunks.
+ * a maximum file size of around 512Gbytees with 2k chunks.
*/
#define YAFFS_NTNODES_LEVEL0 16
#define YAFFS_TNODES_LEVEL0_BITS 4
YAFFS_TNODES_MAX_LEVEL)
#define YAFFS_MAX_CHUNK_ID ((1 << YAFFS_TNODES_MAX_BITS) - 1)
+#define YAFFS_MAX_FILE_SIZE_32 0x7fffffff
+
/* Constants for YAFFS1 mode */
#define YAFFS_BYTES_PER_SPARE 16
#define YAFFS_BYTES_PER_CHUNK 512
/* Binary data version stamps */
#define YAFFS_SUMMARY_VERSION 1
-#define YAFFS_CHECKPOINT_VERSION 6
+#define YAFFS_CHECKPOINT_VERSION 7
#ifdef CONFIG_YAFFS_UNICODE
#define YAFFS_MAX_NAME_LENGTH 127
struct yaffs_cache {
struct yaffs_obj *object;
int chunk_id;
- int last_use;
+ u32 last_use;
int dirty;
int n_bytes; /* Only valid if the cache is dirty */
int locked; /* Can't push out or flush while locked. */
*/
struct yaffs_tags {
- unsigned chunk_id:20;
- unsigned serial_number:2;
- unsigned n_bytes_lsb:10;
- unsigned obj_id:18;
- unsigned ecc:12;
- unsigned n_bytes_msb:2;
+ u32 chunk_id:20;
+ u32 serial_number:2;
+ u32 n_bytes_lsb:10;
+ u32 obj_id:18;
+ u32 ecc:12;
+ u32 n_bytes_msb:2;
};
union yaffs_tags_union {
enum yaffs_ecc_result {
YAFFS_ECC_RESULT_UNKNOWN,
YAFFS_ECC_RESULT_NO_ERROR,
+ YAFFS_ECC_RESULT_REFRESH,
YAFFS_ECC_RESULT_FIXED,
YAFFS_ECC_RESULT_UNFIXED
};
struct yaffs_ext_tags {
unsigned chunk_used; /* Status of the chunk: used or unused */
- unsigned obj_id; /* If 0 this is not used */
+ u32 obj_id; /* If 0 this is not used */
unsigned chunk_id; /* If 0 this is a header, else a data chunk */
unsigned n_bytes; /* Only valid for data chunks */
struct yaffs_block_info {
- int soft_del_pages:10; /* number of soft deleted pages */
- int pages_in_use:10; /* number of pages in use */
- unsigned block_state:4; /* One of the above block states. */
+ s32 soft_del_pages:10; /* number of soft deleted pages */
+ s32 pages_in_use:10; /* number of pages in use */
+ u32 block_state:4; /* One of the above block states. */
/* NB use unsigned because enum is sometimes
* an int */
u32 needs_retiring:1; /* Data has failed on this block, */
enum yaffs_obj_type type;
/* Apply to everything */
- int parent_obj_id;
+ u32 parent_obj_id;
u16 sum_no_longer_used; /* checksum of name. No longer used */
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
/*
* Entry parameters set up way early. Yaffs sets up the rest.
* The structure should be zeroed out before use so that unused
- * and defualt values are zero.
+ * and default values are zero.
*/
int inband_tags; /* Use unband tags */
u32 total_bytes_per_chunk; /* Should be >= 512, does not need to
be a power of 2 */
- int chunks_per_block; /* does not need to be a power of 2 */
- int spare_bytes_per_chunk; /* spare area size */
- int start_block; /* Start block we're allowed to use */
- int end_block; /* End block we're allowed to use */
- int n_reserved_blocks; /* Tuneable so that we can reduce
+ u32 chunks_per_block; /* does not need to be a power of 2 */
+ u32 spare_bytes_per_chunk; /* spare area size */
+ u32 start_block; /* Start block we're allowed to use */
+ u32 end_block; /* End block we're allowed to use */
+ u32 n_reserved_blocks; /* Tuneable so that we can reduce
* reserved blocks on NOR and RAM. */
- int n_caches; /* If <= 0, then short op caching is disabled,
+ u32 n_caches; /* If <= 0, then short op caching is disabled,
* else the number of short op caches.
*/
+ int cache_bypass_aligned; /* If non-zero then bypass the cache for
+ * aligned writes.
+ */
+
int use_nand_ecc; /* Flag to decide whether or not to use
* NAND driver ECC on data (yaffs1) */
int tags_9bytes; /* Use 9 byte tags */
int enable_xattr; /* Enable xattribs */
- /* NAND access functions (Must be set before calling YAFFS) */
-
- int (*write_chunk_fn) (struct yaffs_dev *dev,
- int nand_chunk, const u8 *data,
- const struct yaffs_spare *spare);
- int (*read_chunk_fn) (struct yaffs_dev *dev,
- int nand_chunk, u8 *data,
- struct yaffs_spare *spare);
- int (*erase_fn) (struct yaffs_dev *dev, int flash_block);
- int (*initialise_flash_fn) (struct yaffs_dev *dev);
- int (*deinitialise_flash_fn) (struct yaffs_dev *dev);
-
- /* yaffs2 mode functions */
- int (*write_chunk_tags_fn) (struct yaffs_dev *dev,
- int nand_chunk, const u8 *data,
- const struct yaffs_ext_tags *tags);
- int (*read_chunk_tags_fn) (struct yaffs_dev *dev,
- int nand_chunk, u8 *data,
- struct yaffs_ext_tags *tags);
- int (*bad_block_fn) (struct yaffs_dev *dev, int block_no);
- int (*query_block_fn) (struct yaffs_dev *dev, int block_no,
- enum yaffs_block_state *state,
- u32 *seq_number);
+ u32 max_objects; /*
+ * Set to limit the number of objects created.
+ * 0 = no limit.
+ */
/* The remove_obj_fn function must be supplied by OS flavours that
* need it.
void (*sb_dirty_fn) (struct yaffs_dev *dev);
/* Callback to control garbage collection. */
- unsigned (*gc_control) (struct yaffs_dev *dev);
+ unsigned (*gc_control_fn) (struct yaffs_dev *dev);
/* Debug control flags. Don't use unless you know what you're doing */
int use_header_file_size; /* Flag to determine if we should use
int always_check_erased; /* Force chunk erased check always on */
int disable_summary;
+ int disable_bad_block_marking;
- int max_objects; /*
- * Set to limit the number of objects created.
- * 0 = no limit.
- */
+};
+
+struct yaffs_driver {
+ int (*drv_write_chunk_fn) (struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len);
+ int (*drv_read_chunk_fn) (struct yaffs_dev *dev, int nand_chunk,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ enum yaffs_ecc_result *ecc_result);
+ int (*drv_erase_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_mark_bad_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_check_bad_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_initialise_fn) (struct yaffs_dev *dev);
+ int (*drv_deinitialise_fn) (struct yaffs_dev *dev);
+};
+
+struct yaffs_tags_handler {
+ int (*write_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ const struct yaffs_ext_tags *tags);
+ int (*read_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, u8 *data,
+ struct yaffs_ext_tags *tags);
+
+ int (*query_block_fn) (struct yaffs_dev *dev, int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number);
+ int (*mark_bad_fn) (struct yaffs_dev *dev, int block_no);
};
struct yaffs_dev {
struct yaffs_param param;
+ struct yaffs_driver drv;
+ struct yaffs_tags_handler tagger;
/* Context storage. Holds extra OS specific data for this device */
struct list_head dev_list;
+ int ll_init;
/* Runtime parameters. Set up by YAFFS. */
- int data_bytes_per_chunk;
+ u32 data_bytes_per_chunk;
/* Non-wide tnode stuff */
- u16 chunk_grp_bits; /* Number of bits that need to be resolved if
+ u32 chunk_grp_bits; /* Number of bits that need to be resolved if
* the tnodes are not wide enough.
*/
- u16 chunk_grp_size; /* == 2^^chunk_grp_bits */
+ u32 chunk_grp_size; /* == 2^^chunk_grp_bits */
/* Stuff to support wide tnodes */
u32 tnode_width;
int is_checkpointed;
/* Stuff to support block offsetting to support start block zero */
- int internal_start_block;
- int internal_end_block;
+ u32 internal_start_block;
+ u32 internal_end_block;
int block_offset;
int chunk_offset;
/* Runtime checkpointing stuff */
- int checkpt_page_seq; /* running sequence number of checkpt pages */
- int checkpt_byte_count;
- int checkpt_byte_offs;
+ u32 checkpt_page_seq; /* running sequence number of checkpt pages */
+ u32 checkpt_byte_count;
+ u32 checkpt_byte_offs;
u8 *checkpt_buffer;
int checkpt_open_write;
int blocks_in_checkpt;
- int checkpt_cur_chunk;
- int checkpt_cur_block;
- int checkpt_next_block;
- int *checkpt_block_list;
+ u32 checkpt_cur_chunk;
+ u32 checkpt_cur_block;
+ u32 checkpt_next_block;
+ u32 *checkpt_block_list;
int checkpt_max_blocks;
u32 checkpt_sum;
u32 checkpt_xor;
/* Block Info */
struct yaffs_block_info *block_info;
u8 *chunk_bits; /* bitmap of chunks in use */
- unsigned block_info_alt:1; /* allocated using alternative alloc */
- unsigned chunk_bits_alt:1; /* allocated using alternative alloc */
- int chunk_bit_stride; /* Number of bytes of chunk_bits per block.
+ u8 block_info_alt:1; /* allocated using alternative alloc */
+ u8 chunk_bits_alt:1; /* allocated using alternative alloc */
+ u32 chunk_bit_stride; /* Number of bytes of chunk_bits per block.
* Must be consistent with chunks_per_block.
*/
int n_erased_blocks;
int alloc_block; /* Current block being allocated off */
- u32 alloc_page;
- int alloc_block_finder; /* Used to search for next allocation block */
+ int alloc_page;
+ u32 alloc_block_finder; /* Used to search for next allocation block */
/* Object and Tnode memory management */
void *allocator;
int doing_buffered_block_rewrite;
struct yaffs_cache *cache;
- int cache_last_use;
+ u32 cache_last_use;
/* Stuff for background deletion and unlinked files. */
struct yaffs_obj *unlinked_dir; /* Directory where unlinked and deleted
u32 n_page_writes;
u32 n_page_reads;
u32 n_erasures;
+ u32 n_bad_queries;
+ u32 n_bad_markings;
u32 n_erase_failures;
u32 n_gc_copies;
u32 all_gcs;
};
struct yaffs_shadow_fixer {
- int obj_id;
+ u32 obj_id;
int shadowed_id;
struct yaffs_shadow_fixer *next;
};
int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name);
int yaffs_del_obj(struct yaffs_obj *obj);
+struct yaffs_obj *yaffs_retype_obj(struct yaffs_obj *obj,
+ enum yaffs_obj_type type);
+
int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size);
loff_t yaffs_get_obj_length(struct yaffs_obj *obj);
/* File operations */
int yaffs_file_rd(struct yaffs_obj *obj, u8 * buffer, loff_t offset,
- int n_bytes);
+ u32 n_bytes);
int yaffs_wr_file(struct yaffs_obj *obj, const u8 * buffer, loff_t offset,
- int n_bytes, int write_trhrough);
+ u32 n_bytes, int write_trhrough);
int yaffs_resize_file(struct yaffs_obj *obj, loff_t new_size);
struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent,
const YCHAR *name, u32 mode, u32 uid,
u32 gid);
-int yaffs_flush_file(struct yaffs_obj *obj, int update_time, int data_sync);
+int yaffs_flush_file(struct yaffs_obj *in,
+ int update_time,
+ int data_sync,
+ int discard_cache);
/* Flushing and checkpointing */
-void yaffs_flush_whole_cache(struct yaffs_dev *dev);
+void yaffs_flush_whole_cache(struct yaffs_dev *dev, int discard);
int yaffs_checkpoint_save(struct yaffs_dev *dev);
int yaffs_checkpoint_restore(struct yaffs_dev *dev);
int yaffs_dump_obj(struct yaffs_obj *obj);
void yaffs_guts_test(struct yaffs_dev *dev);
+int yaffs_guts_ll_init(struct yaffs_dev *dev);
+
/* A few useful functions to be used within the core files*/
void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash,
int lyn);
int yaffs_check_ff(u8 *buffer, int n_bytes);
void yaffs_handle_chunk_error(struct yaffs_dev *dev,
- struct yaffs_block_info *bi);
+ struct yaffs_block_info *bi,
+ enum yaffs_ecc_result err_type);
u8 *yaffs_get_temp_buffer(struct yaffs_dev *dev);
void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer);
void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj);
YCHAR *yaffs_clone_str(const YCHAR *str);
void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list);
-void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no);
+void yaffs_block_became_dirty(struct yaffs_dev *dev, u32 block_no);
int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name,
int force, int is_shrink, int shadows,
struct yaffs_xattr_mod *xop);
-void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id,
+void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, u32 obj_id,
int backward_scanning);
int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks);
struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev);
struct yaffs_tnode *passed_tn);
int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset,
- int n_bytes, int write_trhrough);
+ u32 n_bytes, int write_trhrough);
void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size);
void yaffs_skip_rest_of_block(struct yaffs_dev *dev);
int yaffs_is_non_empty_dir(struct yaffs_obj *obj);
+int yaffs_guts_format_dev(struct yaffs_dev *dev);
+
void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr,
- int *chunk_out, u32 *offset_out);
+ u32 *chunk_out, u32 *offset_out);
/*
* Marshalling functions to get loff_t file sizes into aand out of
* object headers.
loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh);
loff_t yaffs_max_file_size(struct yaffs_dev *dev);
+/*
+ * Debug function to count number of blocks in each state
+ * NB Needs to be called with correct number of integers
+ */
+
+void yaffs_count_blocks_by_state(struct yaffs_dev *dev, int bs[10]);
+
+int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ struct yaffs_ext_tags *tags);
+
+/* Global to control max write attempts */
+extern int yaffs_wr_attempts;
+
#endif
projects / yaffs2.git / blobdiff