150 lines
5.4 KiB
C
150 lines
5.4 KiB
C
/*
|
|
* Data structures and definitions for CAM peripheral ("type") drivers.
|
|
*
|
|
* Copyright (c) 1997, 1998 Justin T. Gibbs.
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 _CAM_CAM_PERIPH_H
|
|
#define _CAM_CAM_PERIPH_H 1
|
|
|
|
#include <sys/queue.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
extern struct linker_set periphdriver_set;
|
|
|
|
typedef void (periph_init_t)(void); /*
|
|
* Callback informing the peripheral driver
|
|
* it can perform it's initialization since
|
|
* the XPT is now fully initialized.
|
|
*/
|
|
typedef periph_init_t *periph_init_func_t;
|
|
|
|
struct periph_driver {
|
|
periph_init_func_t init;
|
|
char *driver_name;
|
|
TAILQ_HEAD(,cam_periph) units;
|
|
u_int generation;
|
|
};
|
|
|
|
typedef enum {
|
|
CAM_PERIPH_BIO,
|
|
CAM_PERIPH_NET
|
|
} cam_periph_type;
|
|
|
|
/* Generically usefull offsets into the peripheral private area */
|
|
#define ppriv_ptr0 periph_priv.entries[0].ptr
|
|
#define ppriv_ptr1 periph_priv.entries[1].ptr
|
|
#define ppriv_field0 periph_priv.entries[0].field
|
|
#define ppriv_field1 periph_priv.entries[1].field
|
|
|
|
typedef void periph_start_t (struct cam_periph *periph,
|
|
union ccb *start_ccb);
|
|
typedef cam_status periph_ctor_t (struct cam_periph *periph,
|
|
void *arg);
|
|
typedef void periph_oninv_t (struct cam_periph *periph);
|
|
typedef void periph_dtor_t (struct cam_periph *periph);
|
|
struct cam_periph {
|
|
cam_pinfo pinfo;
|
|
periph_start_t *periph_start;
|
|
periph_oninv_t *periph_oninval;
|
|
periph_dtor_t *periph_dtor;
|
|
char *periph_name;
|
|
struct cam_path *path; /* Compiled path to device */
|
|
void *softc;
|
|
u_int32_t unit_number;
|
|
cam_periph_type type;
|
|
u_int32_t flags;
|
|
#define CAM_PERIPH_RUNNING 0x01
|
|
#define CAM_PERIPH_LOCKED 0x02
|
|
#define CAM_PERIPH_LOCK_WANTED 0x04
|
|
#define CAM_PERIPH_INVALID 0x08
|
|
#define CAM_PERIPH_NEW_DEV_FOUND 0x10
|
|
#define CAM_PERIPH_RECOVERY_INPROG 0x20
|
|
u_int32_t immediate_priority;
|
|
u_int32_t refcount;
|
|
SLIST_HEAD(, ccb_hdr) ccb_list; /* For "immediate" requests */
|
|
SLIST_ENTRY(cam_periph) periph_links;
|
|
TAILQ_ENTRY(cam_periph) unit_links;
|
|
ac_callback_t *deferred_callback;
|
|
ac_code deferred_ac;
|
|
};
|
|
|
|
#define CAM_PERIPH_MAXMAPS 2
|
|
|
|
struct cam_periph_map_info {
|
|
int num_bufs_used;
|
|
struct buf *bp[CAM_PERIPH_MAXMAPS];
|
|
};
|
|
|
|
cam_status cam_periph_alloc(periph_ctor_t *periph_ctor,
|
|
periph_oninv_t *periph_oninvalidate,
|
|
periph_dtor_t *periph_dtor,
|
|
periph_start_t *periph_start,
|
|
char *name, cam_periph_type type, struct cam_path *,
|
|
ac_callback_t *, ac_code, void *arg);
|
|
struct cam_periph *cam_periph_find(struct cam_path *path, char *name);
|
|
int cam_periph_lock(struct cam_periph *periph, int priority);
|
|
void cam_periph_unlock(struct cam_periph *periph);
|
|
cam_status cam_periph_acquire(struct cam_periph *periph);
|
|
void cam_periph_release(struct cam_periph *periph);
|
|
void cam_periph_invalidate(struct cam_periph *periph);
|
|
int cam_periph_mapmem(union ccb *ccb,
|
|
struct cam_periph_map_info *mapinfo);
|
|
void cam_periph_unmapmem(union ccb *ccb,
|
|
struct cam_periph_map_info *mapinfo);
|
|
union ccb *cam_periph_getccb(struct cam_periph *periph,
|
|
u_int32_t priority);
|
|
void cam_periph_ccbwait(union ccb *ccb);
|
|
int cam_periph_runccb(union ccb *ccb,
|
|
int (*error_routine)(union ccb *ccb,
|
|
cam_flags camflags,
|
|
u_int32_t sense_flags),
|
|
cam_flags camflags, u_int32_t sense_flags,
|
|
struct devstat *ds);
|
|
int cam_periph_ioctl(struct cam_periph *periph, int cmd,
|
|
caddr_t addr,
|
|
int (*error_routine)(union ccb *ccb,
|
|
cam_flags camflags,
|
|
u_int32_t sense_flags));
|
|
void cam_freeze_devq(struct cam_path *path);
|
|
u_int32_t cam_release_devq(struct cam_path *path, u_int32_t relsim_flags,
|
|
u_int32_t opening_reduction, u_int32_t timeout,
|
|
int getcount_only);
|
|
void cam_periph_async(struct cam_periph *periph, u_int32_t code,
|
|
struct cam_path *path, void *arg);
|
|
void cam_periph_bus_settle(struct cam_periph *periph,
|
|
u_int bus_settle_ms);
|
|
void cam_periph_freeze_after_event(struct cam_periph *periph,
|
|
struct timeval* event_time,
|
|
u_int duration_ms);
|
|
int cam_periph_error(union ccb *ccb, cam_flags camflags,
|
|
u_int32_t sense_flags, union ccb *save_ccb);
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* _CAM_CAM_PERIPH_H */
|