136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2006-2007 Ivan Voras <ivoras@freebsd.org>
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``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 AUTHORS 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.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _G_VIRSTOR_H_
|
||
|
|
#define _G_VIRSTOR_H_
|
||
|
|
|
||
|
|
#define G_VIRSTOR_CLASS_NAME "VIRSTOR"
|
||
|
|
|
||
|
|
|
||
|
|
#define VIRSTOR_MAP_ALLOCATED 1
|
||
|
|
struct virstor_map_entry {
|
||
|
|
uint16_t flags;
|
||
|
|
uint16_t provider_no;
|
||
|
|
uint32_t provider_chunk;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define VIRSTOR_MAP_ENTRY_SIZE (sizeof(struct virstor_map_entry))
|
||
|
|
#define VIRSTOR_MAP_BLOCK_ENTRIES (MAXPHYS / VIRSTOR_MAP_ENTRY_SIZE)
|
||
|
|
/* Struct size is guarded by CTASSERT in main source */
|
||
|
|
|
||
|
|
#ifdef _KERNEL
|
||
|
|
|
||
|
|
#define LOG_MSG(lvl, ...) do { \
|
||
|
|
if (g_virstor_debug >= (lvl)) { \
|
||
|
|
printf("GEOM_" G_VIRSTOR_CLASS_NAME); \
|
||
|
|
if (lvl > 0) \
|
||
|
|
printf("[%u]", lvl); \
|
||
|
|
printf(": "); \
|
||
|
|
printf(__VA_ARGS__); \
|
||
|
|
printf("\n"); \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
#define LOG_MESSAGE LOG_MSG
|
||
|
|
|
||
|
|
#define LOG_REQ(lvl, bp, ...) do { \
|
||
|
|
if (g_virstor_debug >= (lvl)) { \
|
||
|
|
printf("GEOM_" G_VIRSTOR_CLASS_NAME); \
|
||
|
|
if (lvl > 0) \
|
||
|
|
printf("[%u]", lvl); \
|
||
|
|
printf(": "); \
|
||
|
|
printf(__VA_ARGS__); \
|
||
|
|
printf(" "); \
|
||
|
|
g_print_bio(bp); \
|
||
|
|
printf("\n"); \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
#define LOG_REQUEST LOG_REQ
|
||
|
|
|
||
|
|
/* "critical" system announcements (e.g. "geom is up") */
|
||
|
|
#define LVL_ANNOUNCE 0
|
||
|
|
/* errors */
|
||
|
|
#define LVL_ERROR 1
|
||
|
|
/* warnings */
|
||
|
|
#define LVL_WARNING 2
|
||
|
|
/* info, noncritical for system operation (user doesn't have to see it */
|
||
|
|
#define LVL_INFO 5
|
||
|
|
/* debug info */
|
||
|
|
#define LVL_DEBUG 10
|
||
|
|
/* more debug info */
|
||
|
|
#define LVL_DEBUG2 12
|
||
|
|
/* superfluous debug info (large volumes of data) */
|
||
|
|
#define LVL_MOREDEBUG 15
|
||
|
|
|
||
|
|
|
||
|
|
/* Component data */
|
||
|
|
struct g_virstor_component {
|
||
|
|
struct g_consumer *gcons;
|
||
|
|
struct g_virstor_softc *sc;
|
||
|
|
unsigned int index; /* Component index in array */
|
||
|
|
unsigned int chunk_count;
|
||
|
|
unsigned int chunk_next;
|
||
|
|
unsigned int chunk_reserved;
|
||
|
|
unsigned int flags;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Internal geom instance data */
|
||
|
|
struct g_virstor_softc {
|
||
|
|
struct g_geom *geom;
|
||
|
|
struct g_provider *provider;
|
||
|
|
struct g_virstor_component *components;
|
||
|
|
u_int n_components;
|
||
|
|
u_int curr_component; /* Component currently used */
|
||
|
|
uint32_t id; /* Unique ID of this geom */
|
||
|
|
off_t virsize; /* Total size of virstor */
|
||
|
|
off_t sectorsize;
|
||
|
|
size_t chunk_size;
|
||
|
|
size_t chunk_count; /* governs map_size */
|
||
|
|
struct virstor_map_entry *map;
|
||
|
|
size_t map_size; /* (in bytes) */
|
||
|
|
size_t map_sectors; /* Size of map in sectors */
|
||
|
|
size_t me_per_sector; /* # map entries in a sector */
|
||
|
|
STAILQ_HEAD(, g_virstor_bio_q) delayed_bio_q; /* Queue of delayed BIOs */
|
||
|
|
struct mtx delayed_bio_q_mtx;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* "delayed BIOs" Queue element */
|
||
|
|
struct g_virstor_bio_q {
|
||
|
|
struct bio *bio;
|
||
|
|
STAILQ_ENTRY(g_virstor_bio_q) linkage;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _KERNEL */
|
||
|
|
|
||
|
|
#ifndef _PATH_DEV
|
||
|
|
#define _PATH_DEV "/dev/"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* !_G_VIRSTOR_H_ */
|