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#ifndef __CODA_PSDEV_H

#define __CODA_PSDEV_H

#define CODA_PSDEV_MAJOR 67

#define MAX_CODADEVS  5    /* how many do we allow */

#define CODA_SUPER_MAGIC        0x73757245

struct coda_sb_info

{

        struct venus_comm * sbi_vcomm;

        struct super_block *sbi_sb;

        struct list_head    sbi_cihead;

        struct semaphore    sbi_iget4_mutex;

};

/* communication pending/processing queues */

struct venus_comm {

        u_long              vc_seq;

        wait_queue_head_t   vc_waitq; /* Venus wait queue */

        struct list_head    vc_pending;

        struct list_head    vc_processing;

        int                 vc_inuse;

        struct super_block *vc_sb;

};

static inline struct coda_sb_info *coda_sbp(struct super_block *sb)

{

    return ((struct coda_sb_info *)((sb)->u.generic_sbp));

}

/* upcalls */

int venus_rootfid(struct super_block *sb, ViceFid *fidp);

int venus_getattr(struct super_block *sb, struct ViceFid *fid,

                     struct coda_vattr *attr);

int venus_setattr(struct super_block *, struct ViceFid *,

                     struct coda_vattr *);

int venus_lookup(struct super_block *sb, struct ViceFid *fid,

                    const char *name, int length, int *type,

                    struct ViceFid *resfid);

int venus_store(struct super_block *sb, struct ViceFid *fid, int flags,

                struct coda_cred *);

int venus_release(struct super_block *sb, struct ViceFid *fid, int flags);

int venus_close(struct super_block *sb, struct ViceFid *fid, int flags,

                struct coda_cred *);

int venus_open(struct super_block *sb, struct ViceFid *fid,

                int flags, struct file **f);

int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid,

                          const char *name, int length,

                          struct ViceFid *newfid, struct coda_vattr *attrs);

int venus_create(struct super_block *sb, struct ViceFid *dirfid,

                    const char *name, int length, int excl, int mode, int rdev,

                    struct ViceFid *newfid, struct coda_vattr *attrs) ;

int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid,

                    const char *name, int length);

int venus_remove(struct super_block *sb, struct ViceFid *dirfid,

                 const char *name, int length);

int venus_readlink(struct super_block *sb, struct ViceFid *fid,

                   char *buffer, int *length);

int venus_rename(struct super_block *, struct ViceFid *new_fid,

                 struct ViceFid *old_fid, size_t old_length,

                 size_t new_length, const char *old_name,

                 const char *new_name);

int venus_link(struct super_block *sb, struct ViceFid *fid,

                  struct ViceFid *dirfid, const char *name, int len );

int venus_symlink(struct super_block *sb, struct ViceFid *fid,

                  const char *name, int len, const char *symname, int symlen);

int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);

int venus_pioctl(struct super_block *sb, struct ViceFid *fid,

                 unsigned int cmd, struct PioctlData *data);

int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);

int venus_fsync(struct super_block *sb, struct ViceFid *fid);

int venus_statfs(struct super_block *sb, struct statfs *sfs);

/* messages between coda filesystem in kernel and Venus */

extern int coda_hard;

extern unsigned long coda_timeout;

struct upc_req {

        struct list_head    uc_chain;

        caddr_t             uc_data;

        u_short             uc_flags;

        u_short             uc_inSize;  /* Size is at most 5000 bytes */

        u_short             uc_outSize;

        u_short             uc_opcode;  /* copied from data to save lookup */

        int                 uc_unique;

        wait_queue_head_t   uc_sleep;   /* process' wait queue */

        unsigned long       uc_posttime;

};

#define REQ_ASYNC  0x1

#define REQ_READ   0x2

#define REQ_WRITE  0x4

#define REQ_ABORT  0x8

/*

 * Statistics

 */

struct coda_upcallstats {

        int     ncalls;                 /* client requests */

        int     nbadcalls;              /* upcall failures */

        int     reqs[CODA_NCALLS];      /* count of each request */

} ;

extern struct coda_upcallstats coda_callstats;

extern struct venus_comm coda_comms[];

static inline void clstats(int opcode)

{

    coda_callstats.ncalls++;

    if ( (0 <= opcode) && (opcode <= CODA_NCALLS) )

        coda_callstats.reqs[opcode]++;

    else

        printk("clstats called with bad opcode %d\n", opcode);

}

static inline void badclstats(void)

{

    coda_callstats.nbadcalls++;

}

#endif