157 lines
5.6 KiB
C
157 lines
5.6 KiB
C
/*-
|
|
* Data structures and definitions for dealing with the
|
|
* Common Access Method Transport (xpt) layer.
|
|
*
|
|
* Copyright (c) 1997 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_XPT_H
|
|
#define _CAM_CAM_XPT_H 1
|
|
|
|
#ifdef _KERNEL
|
|
#include <sys/cdefs.h>
|
|
#include "opt_printf.h"
|
|
#endif
|
|
|
|
/* Forward Declarations */
|
|
union ccb;
|
|
struct cam_periph;
|
|
struct cam_ed;
|
|
struct cam_sim;
|
|
struct sbuf;
|
|
|
|
/*
|
|
* Definition of a CAM path. Paths are created from bus, target, and lun ids
|
|
* via xpt_create_path and allow for reference to devices without recurring
|
|
* lookups in the edt.
|
|
*/
|
|
struct cam_path;
|
|
|
|
/* Path functions */
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/* Wild guess based on not wanting to grow the stack too much */
|
|
#define XPT_PRINT_MAXLEN 512
|
|
#ifdef PRINTF_BUFR_SIZE
|
|
#define XPT_PRINT_LEN PRINTF_BUFR_SIZE
|
|
#else
|
|
#define XPT_PRINT_LEN 128
|
|
#endif
|
|
_Static_assert(XPT_PRINT_LEN <= XPT_PRINT_MAXLEN, "XPT_PRINT_LEN is too large");
|
|
|
|
/*
|
|
* Definition of an async handler callback block. These are used to add
|
|
* SIMs and peripherals to the async callback lists.
|
|
*/
|
|
struct async_node {
|
|
SLIST_ENTRY(async_node) links;
|
|
u_int32_t event_enable; /* Async Event enables */
|
|
u_int32_t event_lock; /* Take SIM lock for handlers. */
|
|
void (*callback)(void *arg, u_int32_t code,
|
|
struct cam_path *path, void *args);
|
|
void *callback_arg;
|
|
};
|
|
|
|
SLIST_HEAD(async_list, async_node);
|
|
SLIST_HEAD(periph_list, cam_periph);
|
|
|
|
void xpt_action(union ccb *new_ccb);
|
|
void xpt_action_default(union ccb *new_ccb);
|
|
union ccb *xpt_alloc_ccb(void);
|
|
union ccb *xpt_alloc_ccb_nowait(void);
|
|
void xpt_free_ccb(union ccb *free_ccb);
|
|
void xpt_setup_ccb_flags(struct ccb_hdr *ccb_h,
|
|
struct cam_path *path,
|
|
u_int32_t priority,
|
|
u_int32_t flags);
|
|
void xpt_setup_ccb(struct ccb_hdr *ccb_h,
|
|
struct cam_path *path,
|
|
u_int32_t priority);
|
|
void xpt_merge_ccb(union ccb *master_ccb,
|
|
union ccb *slave_ccb);
|
|
cam_status xpt_create_path(struct cam_path **new_path_ptr,
|
|
struct cam_periph *perph,
|
|
path_id_t path_id,
|
|
target_id_t target_id, lun_id_t lun_id);
|
|
cam_status xpt_create_path_unlocked(struct cam_path **new_path_ptr,
|
|
struct cam_periph *perph,
|
|
path_id_t path_id,
|
|
target_id_t target_id, lun_id_t lun_id);
|
|
int xpt_getattr(char *buf, size_t len, const char *attr,
|
|
struct cam_path *path);
|
|
void xpt_free_path(struct cam_path *path);
|
|
void xpt_path_counts(struct cam_path *path, uint32_t *bus_ref,
|
|
uint32_t *periph_ref, uint32_t *target_ref,
|
|
uint32_t *device_ref);
|
|
int xpt_path_comp(struct cam_path *path1,
|
|
struct cam_path *path2);
|
|
int xpt_path_comp_dev(struct cam_path *path,
|
|
struct cam_ed *dev);
|
|
void xpt_print_path(struct cam_path *path);
|
|
void xpt_print_device(struct cam_ed *device);
|
|
void xpt_print(struct cam_path *path, const char *fmt, ...);
|
|
int xpt_path_string(struct cam_path *path, char *str,
|
|
size_t str_len);
|
|
int xpt_path_sbuf(struct cam_path *path, struct sbuf *sb);
|
|
path_id_t xpt_path_path_id(struct cam_path *path);
|
|
target_id_t xpt_path_target_id(struct cam_path *path);
|
|
lun_id_t xpt_path_lun_id(struct cam_path *path);
|
|
struct cam_sim *xpt_path_sim(struct cam_path *path);
|
|
struct cam_periph *xpt_path_periph(struct cam_path *path);
|
|
void xpt_async(u_int32_t async_code, struct cam_path *path,
|
|
void *async_arg);
|
|
void xpt_rescan(union ccb *ccb);
|
|
void xpt_hold_boot(void);
|
|
void xpt_release_boot(void);
|
|
void xpt_lock_buses(void);
|
|
void xpt_unlock_buses(void);
|
|
struct mtx * xpt_path_mtx(struct cam_path *path);
|
|
#define xpt_path_lock(path) mtx_lock(xpt_path_mtx(path))
|
|
#define xpt_path_unlock(path) mtx_unlock(xpt_path_mtx(path))
|
|
#define xpt_path_assert(path, what) mtx_assert(xpt_path_mtx(path), (what))
|
|
#define xpt_path_owned(path) mtx_owned(xpt_path_mtx(path))
|
|
#define xpt_path_sleep(path, chan, priority, wmesg, timo) \
|
|
msleep((chan), xpt_path_mtx(path), (priority), (wmesg), (timo))
|
|
cam_status xpt_register_async(int event, ac_callback_t *cbfunc,
|
|
void *cbarg, struct cam_path *path);
|
|
cam_status xpt_compile_path(struct cam_path *new_path,
|
|
struct cam_periph *perph,
|
|
path_id_t path_id,
|
|
target_id_t target_id,
|
|
lun_id_t lun_id);
|
|
cam_status xpt_clone_path(struct cam_path **new_path,
|
|
struct cam_path *path);
|
|
void xpt_copy_path(struct cam_path *new_path,
|
|
struct cam_path *path);
|
|
|
|
void xpt_release_path(struct cam_path *path);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _CAM_CAM_XPT_H */
|