/* * JFFS2 -- Journalling Flash File System, Version 2. * * Copyright (C) 2002-2003 Red Hat, Inc. * * Created by David Woodhouse * * For licensing information, see the file 'LICENCE' in this directory. * * $Id: os-ecos.h,v 1.27 2005/11/07 11:14:44 gleixner Exp $ * */ #ifndef __JFFS2_OS_ECOS_H__ #define __JFFS2_OS_ECOS_H__ #include #include #include #include #include #include #include #include #include #include // tracing macros #include // assertion macros #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define printf diag_printf struct _inode; struct super_block; struct iovec { void *iov_base; ssize_t iov_len; }; static inline unsigned int full_name_hash(const unsigned char * name, unsigned int len) { unsigned hash = 0; while (len--) { hash = (hash << 4) | (hash >> 28); hash ^= *(name++); } return hash; } #ifdef CYGOPT_FS_JFFS2_WRITE #define jffs2_is_readonly(c) (0) #else #define jffs2_is_readonly(c) (1) #endif /* NAND flash not currently supported on eCos */ #define jffs2_can_mark_obsolete(c) (1) #define JFFS2_INODE_INFO(i) (&(i)->jffs2_i) #define OFNI_EDONI_2SFFJ(f) ((struct _inode *) ( ((char *)f) - ((char *)(&((struct _inode *)NULL)->jffs2_i)) ) ) #define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size) #define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode) #define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid) #define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid) #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime) #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime) #define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime) /* FIXME: eCos doesn't hav a concept of device major/minor numbers */ #define JFFS2_F_I_RDEV_MIN(f) ((OFNI_EDONI_2SFFJ(f)->i_rdev)&0xff) #define JFFS2_F_I_RDEV_MAJ(f) ((OFNI_EDONI_2SFFJ(f)->i_rdev)>>8) #define get_seconds cyg_timestamp struct _inode { cyg_uint32 i_ino; int i_count; mode_t i_mode; nlink_t i_nlink; // Could we dispense with this? uid_t i_uid; gid_t i_gid; time_t i_atime; time_t i_mtime; time_t i_ctime; // union { unsigned short i_rdev; // For devices only struct _inode * i_parent; // For directories only off_t i_size; // For files only // }; struct super_block * i_sb; struct jffs2_inode_info jffs2_i; struct _inode * i_cache_prev; // We need doubly-linked? struct _inode * i_cache_next; }; #define JFFS2_SB_INFO(sb) (&(sb)->jffs2_sb) #define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->jffs2_sb)) ) ) struct super_block { struct jffs2_sb_info jffs2_sb; struct _inode * s_root; unsigned long s_mount_count; cyg_io_handle_t s_dev; #ifdef CYGOPT_FS_JFFS2_GCTHREAD cyg_mutex_t s_lock; // Lock the inode cache cyg_flag_t s_gc_thread_flags; // Communication with the gcthread cyg_handle_t s_gc_thread_handle; cyg_thread s_gc_thread; #if (CYGNUM_JFFS2_GC_THREAD_STACK_SIZE >= CYGNUM_HAL_STACK_SIZE_MINIMUM) char s_gc_thread_stack[CYGNUM_JFFS2_GC_THREAD_STACK_SIZE]; #else char s_gc_thread_stack[CYGNUM_HAL_STACK_SIZE_MINIMUM]; #endif cyg_mtab_entry *mte; #endif }; #define sleep_on_spinunlock(wq, sl) spin_unlock(sl) #define EBADFD 32767 /* background.c */ #ifdef CYGOPT_FS_JFFS2_GCTHREAD void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c); void jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c); void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c); #else static inline void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c) { /* We don't have a GC thread in eCos (yet) */ } #endif /* fs-ecos.c */ struct _inode *jffs2_new_inode (struct _inode *dir_i, int mode, struct jffs2_raw_inode *ri); struct _inode *jffs2_iget(struct super_block *sb, cyg_uint32 ino); void jffs2_iput(struct _inode * i); void jffs2_gc_release_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f); struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c, int inum, int nlink); unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c, struct jffs2_inode_info *f, unsigned long offset, unsigned long *priv); void jffs2_gc_release_page(struct jffs2_sb_info *c, unsigned char *pg, unsigned long *priv); /* Avoid polluting eCos namespace with names not starting in jffs2_ */ #define os_to_jffs2_mode(x) jffs2_from_os_mode(x) uint32_t jffs2_from_os_mode(uint32_t osmode); uint32_t jffs2_to_os_mode (uint32_t jmode); /* flashio.c */ cyg_bool jffs2_flash_read(struct jffs2_sb_info *c, cyg_uint32 read_buffer_offset, const size_t size, size_t * return_size, unsigned char * write_buffer); cyg_bool jffs2_flash_write(struct jffs2_sb_info *c, cyg_uint32 write_buffer_offset, const size_t size, size_t * return_size, unsigned char * read_buffer); int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct iovec *vecs, unsigned long count, loff_t to, size_t *retlen); cyg_bool jffs2_flash_erase(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); // dir-ecos.c struct _inode *jffs2_lookup(struct _inode *dir_i, const unsigned char *name, int namelen); int jffs2_create(struct _inode *dir_i, const unsigned char *d_name, int mode, struct _inode **new_i); int jffs2_mkdir (struct _inode *dir_i, const unsigned char *d_name, int mode); int jffs2_link (struct _inode *old_d_inode, struct _inode *dir_i, const unsigned char *d_name); int jffs2_unlink(struct _inode *dir_i, struct _inode *d_inode, const unsigned char *d_name); int jffs2_rmdir (struct _inode *dir_i, struct _inode *d_inode, const unsigned char *d_name); int jffs2_rename (struct _inode *old_dir_i, struct _inode *d_inode, const unsigned char *old_d_name, struct _inode *new_dir_i, const unsigned char *new_d_name); /* erase.c */ static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c) { } #ifndef CONFIG_JFFS2_FS_WRITEBUFFER #define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) ) #define jffs2_can_mark_obsolete(c) (1) #define jffs2_ebh_oob(c) (0) #define jffs2_write_nand_cleanmarker(c,jeb) (-EIO) #define jffs2_flush_wbuf_pad(c) (c=c) #define jffs2_flush_wbuf_gc(c, i) ({ (void)(c), (void) i, 0; }) #define jffs2_nand_read_failcnt(c,jeb) do { ; } while(0) #define jffs2_write_nand_badblock(c,jeb,p) (0) #define jffs2_flash_setup(c) (0) #define jffs2_nand_flash_cleanup(c) do {} while(0) #define jffs2_wbuf_dirty(c) (0) #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e) #define jffs2_wbuf_timeout NULL #define jffs2_wbuf_process NULL #define jffs2_nor_ecc(c) (0) #else #error no nand yet #endif #ifndef BUG_ON #define BUG_ON(x) do { if (unlikely(x)) BUG(); } while(0) #endif #define __init #endif /* __JFFS2_OS_ECOS_H__ */