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/*-
* 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_ */
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