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/*

 * JFFS2 -- Journalling Flash File System, Version 2.

 *

 * Copyright (C) 2002 Red Hat, Inc.

 *

 * Created by David Woodhouse <dwmw2@cambridge.redhat.com>

 *

 * For licensing information, see the file 'LICENCE' in this directory.

 *

 * $Id: os-ecos.h,v 1.1.1.1 2004-02-14 13:29:18 phoenix Exp $

 *

 */

#ifndef __JFFS2_OS_ECOS_H__

#define __JFFS2_OS_ECOS_H__

#include <cyg/io/io.h>

#include <sys/types.h>

#include <asm/atomic.h>

#include <linux/stat.h>

#include "jffs2port.h"

#define CONFIG_JFFS2_FS_DEBUG 0

static inline uint32_t os_to_jffs2_mode(uint32_t osmode)

{

        uint32_t jmode = ((osmode & S_IRUSR)?00400:0) |

                ((osmode & S_IWUSR)?00200:0) |

                ((osmode & S_IXUSR)?00100:0) |

                ((osmode & S_IRGRP)?00040:0) |

                ((osmode & S_IWGRP)?00020:0) |

                ((osmode & S_IXGRP)?00010:0) |

                ((osmode & S_IROTH)?00004:0) |

                ((osmode & S_IWOTH)?00002:0) |

                ((osmode & S_IXOTH)?00001:0);

        switch (osmode & S_IFMT) {

        case S_IFSOCK:

                return jmode | 0140000;

        case S_IFLNK:

                return jmode | 0120000;

        case S_IFREG:

                return jmode | 0100000;

        case S_IFBLK:

                return jmode | 0060000;

        case S_IFDIR:

                return jmode | 0040000;

        case S_IFCHR:

                return jmode | 0020000;

        case S_IFIFO:

                return jmode | 0010000;

        case S_ISUID:

                return jmode | 0004000;

        case S_ISGID:

                return jmode | 0002000;

#ifdef S_ISVTX

        case S_ISVTX:

                return jmode | 0001000;

#endif

        }

        printf("os_to_jffs2_mode() cannot convert 0x%x\n", osmode);

        BUG();

        return 0;

}

static inline uint32_t jffs2_to_os_mode (uint32_t jmode)

{

        uint32_t osmode = ((jmode & 00400)?S_IRUSR:0) |

                ((jmode & 00200)?S_IWUSR:0) |

                ((jmode & 00100)?S_IXUSR:0) |

                ((jmode & 00040)?S_IRGRP:0) |

                ((jmode & 00020)?S_IWGRP:0) |

                ((jmode & 00010)?S_IXGRP:0) |

                ((jmode & 00004)?S_IROTH:0) |

                ((jmode & 00002)?S_IWOTH:0) |

                ((jmode & 00001)?S_IXOTH:0);

        switch(jmode & 00170000) {

        case 0140000:

                return osmode | S_IFSOCK;

        case 0120000:

                return osmode | S_IFLNK;

        case 0100000:

                return osmode | S_IFREG;

        case 0060000:

                return osmode | S_IFBLK;

        case 0040000:

                return osmode | S_IFDIR;

        case 0020000:

                return osmode | S_IFCHR;

        case 0010000:

                return osmode | S_IFIFO;

        case 0004000:

                return osmode | S_ISUID;

        case 0002000:

                return osmode | S_ISGID;

#ifdef S_ISVTX

        case 0001000:

                return osmode | S_ISVTX;

#endif

        }

        printf("jffs2_to_os_mode() cannot convert 0x%x\n", osmode);

        BUG();

        return 0;

}

 /* Read-only operation not currently implemented on eCos */

#define jffs2_is_readonly(c) (0)

/* 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) (MINOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))

#define JFFS2_F_I_RDEV_MAJ(f) (MAJOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))

//#define ITIME(sec) (sec)

//#define I_SEC(x) (x)

#define get_seconds cyg_timestamp

struct inode {

        //struct list_head      i_hash;

        //struct list_head      i_list;

        struct list_head        i_dentry;

        cyg_uint32              i_ino;

        atomic_t                i_count;

        //kdev_t                        i_dev;

        mode_t                  i_mode;

        nlink_t                 i_nlink;

        uid_t                   i_uid;

        gid_t                   i_gid;

        kdev_t                  i_rdev;

        off_t                   i_size;

        time_t                  i_atime;

        time_t                  i_mtime;

        time_t                  i_ctime;

        unsigned long           i_blksize;

        unsigned long           i_blocks;

        //unsigned long         i_version;

        //struct semaphore      i_sem;

        //struct semaphore      i_zombie;

        struct inode_operations *i_op;

        struct file_operations  *i_fop; // former ->i_op->default_file_ops 

        struct super_block      *i_sb;

        //wait_queue_head_t     i_wait;

        //struct file_lock      *i_flock;

        //struct address_space  *i_mapping;

        //struct address_space  i_data; 

        //struct dquot          *i_dquot[MAXQUOTAS];

        //struct pipe_inode_info        *i_pipe;

        //struct block_device   *i_bdev;

        //unsigned long         i_state;

        unsigned int            i_flags;

        //unsigned char         i_sock;

        atomic_t                i_writecount;

        //unsigned int          i_attr_flags;

        //uint32_t                      i_generation;

        struct jffs2_inode_info jffs2_i;

        struct inode *i_parent;

        struct inode *i_cache_prev;

        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 {

        unsigned long           s_blocksize;

        unsigned char           s_blocksize_bits;

        unsigned char           s_dirt;

        //struct super_operations       *s_op;

        unsigned long           s_flags;

        unsigned long           s_magic;

        //struct dentry         *s_root;

        struct inode            *s_root;

        struct jffs2_sb_info jffs2_sb;

        unsigned long       s_mount_count;

    cyg_io_handle_t     s_dev;

};

#define sleep_on_spinunlock(wq, sl) do { ; } while(0)

#define EBADFD 32767

/* background.c */

static inline void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c)

{

        /* We don't have a GC thread in eCos (yet) */

}

/* dir.c */

extern struct file_operations jffs2_dir_operations;

extern struct inode_operations jffs2_dir_inode_operations;

/* file.c */

extern struct file_operations jffs2_file_operations;

extern struct inode_operations jffs2_file_inode_operations;

extern struct address_space_operations jffs2_file_address_operations;

int jffs2_null_fsync(struct file *, struct dentry *, int);

int jffs2_setattr (struct dentry *dentry, struct iattr *iattr);

int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg);

int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);

//int jffs2_readpage (struct file *, struct page *);

int jffs2_readpage (struct inode *d_inode, struct page *pg);

//int jffs2_prepare_write (struct file *, struct page *, unsigned, unsigned);

int jffs2_prepare_write (struct inode *d_inode, struct page *pg, unsigned start, unsigned end);

//int jffs2_commit_write (struct file *, struct page *, unsigned, unsigned);

int jffs2_commit_write (struct inode *d_inode, struct page *pg, unsigned start, unsigned end);

#ifndef CONFIG_JFFS2_FS_NAND

#define jffs2_can_mark_obsolete(c) (1)

#define jffs2_cleanmarker_oob(c) (0)

#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)

#define jffs2_flush_wbuf(c, flag) do { ; } while(0)

#define jffs2_nand_read_failcnt(c,jeb) do { ; } while(0)

#define jffs2_write_nand_badblock(c,jeb) do { ; } while(0)

#define jffs2_flash_writev jffs2_flash_writev

#define jffs2_wbuf_timeout NULL

#define jffs2_wbuf_process NULL

#else

#error no nand yet

#endif

struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri);

void jffs2_clear_inode (struct inode *inode);

void jffs2_read_inode (struct inode *inode);

static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)

{

        memset(f, 0, sizeof(*f));

        init_MUTEX_LOCKED(&f->sem);

}

#endif /* __JFFS2_OS_ECOS_H__ */