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freebsd-skq/sys/dev/vinum/vinumext.h
Julian Elischer b40ce4165d KSE Milestone 2 
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00

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/*-
* Copyright (c) 1997, 1998
* Nan Yang Computer Services Limited. All rights reserved.
*
* This software is distributed under the so-called ``Berkeley
* License'':
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Nan Yang Computer
* Services Limited.
* 4. Neither the name of the Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided ``as is'', and any express or implied
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose are disclaimed.
* In no event shall the company or contributors be liable for any
* direct, indirect, incidental, special, exemplary, or consequential
* damages (including, but not limited to, procurement of substitute
* goods or services; loss of use, data, or profits; or business
* interruption) however caused and on any theory of liability, whether
* in contract, strict liability, or tort (including negligence or
* otherwise) arising in any way out of the use of this software, even if
* advised of the possibility of such damage.
*
* $Id: vinumext.h,v 1.27 2001/05/22 04:07:22 grog Exp grog $
* $FreeBSD$
*/
/* vinumext.h: external definitions */
/* *sigh* We still need this at the moment. */
#ifdef _KERNEL
extern struct _vinum_conf vinum_conf; /* configuration information */
#else
extern struct __vinum_conf vinum_conf; /* configuration information */
#endif
#ifdef VINUMDEBUG
extern int debug; /* debug flags */
#endif
/* Physical read and write drive */
#define read_drive(a, b, c, d) driveio (a, b, c, d, BIO_READ)
#define write_drive(a, b, c, d) driveio (a, b, c, d, BIO_WRITE)
#define CHECKALLOC(ptr, msg) \
if (ptr == NULL) \
{ \
printf (msg); \
longjmp (command_fail, -1); \
}
#ifndef _KERNEL
struct vnode;
struct thread;
#endif
#ifdef _KERNEL
int vinum_inactive(int);
void free_vinum(int);
int give_sd_to_plex(int plexno, int sdno);
void give_sd_to_drive(int sdno);
int give_plex_to_volume(int volno, int plexno);
struct drive *check_drive(char *);
enum drive_label_info read_drive_label(struct drive *, int);
int parse_config(char *, struct keywordset *, int);
int parse_user_config(char *cptr, struct keywordset *keyset);
u_int64_t sizespec(char *spec);
int volume_index(struct volume *volume);
int plex_index(struct plex *plex);
int sd_index(struct sd *sd);
int drive_index(struct drive *drive);
int my_plex(int volno, int plexno);
int my_sd(int plexno, int sdno);
int get_empty_drive(void);
int find_drive(const char *name, int create);
int find_drive_by_dev(const char *devname, int create);
int get_empty_sd(void);
int find_subdisk(const char *name, int create);
void return_drive_space(int driveno, int64_t offset, int length);
void free_sd(int sdno);
void free_volume(int volno);
int get_empty_plex(void);
int find_plex(const char *name, int create);
void free_plex(int plexno);
int get_empty_volume(void);
int find_volume(const char *name, int create);
void config_subdisk(int);
void config_plex(int);
void config_volume(int);
void config_drive(int);
void updateconfig(int);
void update_sd_config(int sdno, int kernelstate);
void update_plex_config(int plexno, int kernelstate);
void update_volume_config(int volno, int kernelstate);
void update_config(void);
void drive_io_done(struct buf *);
void save_config(void);
void daemon_save_config(void);
void write_config(char *, int);
int start_config(int);
void finish_config(int);
void remove(struct vinum_ioctl_msg *msg);
void remove_drive_entry(int driveno, int force);
void remove_sd_entry(int sdno, int force, int recurse);
void remove_plex_entry(int plexno, int force, int recurse);
void remove_volume_entry(int volno, int force, int recurse);
void checkdiskconfig(char *);
int open_drive(struct drive *, struct thread *, int);
void close_drive(struct drive *drive);
void close_locked_drive(struct drive *drive);
int driveio(struct drive *, char *, size_t, off_t, int);
int set_drive_parms(struct drive *drive);
int init_drive(struct drive *, int);
/* void throw_rude_remark (int, struct _ioctl_reply *, char *, ...); XXX */
void throw_rude_remark(int, char *,...);
/* XXX die die */
void format_config(char *config, int len);
void checkkernel(char *op);
void free_drive(struct drive *drive);
void down_drive(struct drive *drive);
void remove_drive(int driveno);
int vinum_scandisk(char *drivename[], int drives);
/* I/O */
d_open_t vinumopen;
d_close_t vinumclose;
d_strategy_t vinumstrategy;
d_ioctl_t vinumioctl;
d_dump_t vinumdump;
d_psize_t vinumsize;
int vinumstart(struct buf *bp, int reviveok);
int launch_requests(struct request *rq, int reviveok);
void sdio(struct buf *bp);
/* XXX Do we need this? */
int vinumpart(dev_t);
extern jmp_buf command_fail; /* return here if config fails */
#ifdef VINUMDEBUG
/* Memory allocation and request tracing */
void vinum_meminfo(caddr_t data);
int vinum_mallocinfo(caddr_t data);
int vinum_rqinfo(caddr_t data);
void LongJmp(jmp_buf, int);
char *basename(char *);
#endif
void expand_table(void **, int, int);
struct request;
struct rqgroup *allocrqg(struct request *rq, int elements);
void deallocrqg(struct rqgroup *rqg);
/* Device number decoding */
int Volno(dev_t x);
int Plexno(dev_t x);
int Sdno(dev_t x);
/* State transitions */
int set_drive_state(int driveno, enum drivestate state, enum setstateflags flags);
int set_sd_state(int sdno, enum sdstate state, enum setstateflags flags);
enum requeststatus checksdstate(struct sd *sd, struct request *rq, daddr_t diskaddr, daddr_t diskend);
int set_plex_state(int plexno, enum plexstate state, enum setstateflags flags);
int set_volume_state(int volumeno, enum volumestate state, enum setstateflags flags);
void update_sd_state(int sdno);
void forceup(int plexno);
void update_plex_state(int plexno);
void update_volume_state(int volno);
void invalidate_subdisks(struct plex *, enum sdstate);
void get_volume_label(char *name, int plexes, u_int64_t size, struct disklabel *lp);
int write_volume_label(int);
void start_object(struct vinum_ioctl_msg *);
void stop_object(struct vinum_ioctl_msg *);
void setstate(struct vinum_ioctl_msg *msg);
void setstate_by_force(struct vinum_ioctl_msg *msg);
void vinum_label(int);
int vinum_writedisklabel(struct volume *, struct disklabel *);
int initsd(int, int);
struct buf *parityrebuild(struct plex *, u_int64_t, int, enum parityop, struct rangelock **, off_t *);
enum requeststatus sddownstate(struct request *rq);
int restart_plex(int plexno);
int revive_read(struct sd *sd);
int revive_block(int sdno);
void parityops(struct vinum_ioctl_msg *);
/* Auxiliary functions */
enum sdstates sdstatemap(struct plex *plex);
enum volplexstate vpstate(struct plex *plex);
#endif
struct drive *validdrive(int driveno, struct _ioctl_reply *);
struct sd *validsd(int sdno, struct _ioctl_reply *);
struct plex *validplex(int plexno, struct _ioctl_reply *);
struct volume *validvol(int volno, struct _ioctl_reply *);
void resetstats(struct vinum_ioctl_msg *msg);
/* Locking */
#ifdef VINUMDEBUG
int lockdrive(struct drive *drive, char *, int);
#else
int lockdrive(struct drive *drive);
#endif
void unlockdrive(struct drive *drive);
int lockvol(struct volume *vol);
void unlockvol(struct volume *vol);
int lockplex(struct plex *plex);
void unlockplex(struct plex *plex);
struct rangelock *lockrange(daddr_t stripe, struct buf *bp, struct plex *plex);
int lock_config(void);
void unlock_config(void);
/* D<>mon */
void vinum_daemon(void);
int vinum_finddaemon(void);
int vinum_setdaemonopts(int);
extern struct daemonq *daemonq; /* daemon's work queue */
extern struct daemonq *dqend; /* and the end of the queue */
extern struct cdevsw vinum_cdevsw;
#undef Free /* defined in some funny net stuff */
#ifdef _KERNEL
#ifdef VINUMDEBUG
#define Malloc(x) MMalloc ((x), __FILE__, __LINE__) /* show where we came from */
#define Free(x) FFree ((x), __FILE__, __LINE__) /* show where we came from */
caddr_t MMalloc(int size, char *, int);
void FFree(void *mem, char *, int);
#define LOCKDRIVE(d) lockdrive (d, __FILE__, __LINE__)
#else
#define Malloc(x) malloc((x), M_DEVBUF, \
curthread->td_proc->p_intr_nesting_level == 0? M_WAITOK: M_NOWAIT)
#define Free(x) free((x), M_DEVBUF)
#define LOCKDRIVE(d) lockdrive (d)
#endif
#else
#define Malloc(x) malloc ((x)) /* just the size */
#define Free(x) free ((x)) /* just the address */
#endif
/* Local Variables: */
/* fill-column: 50 */
/* End: */
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