1 /* 2 * Data structures and definitions for dealing with the 3 * Common Access Method Transport (xpt) layer. 4 * 5 * Copyright (c) 1997 Justin T. Gibbs. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _CAM_CAM_XPT_H 33 #define _CAM_CAM_XPT_H 1 34 35 /* Forward Declarations */ 36 union ccb; 37 struct cam_periph; 38 struct cam_sim; 39 40 /* 41 * Definition of a CAM path. Paths are created from bus, target, and lun ids 42 * via xpt_create_path and allow for reference to devices without recurring 43 * lookups in the edt. 44 */ 45 struct cam_path; 46 47 /* Path functions */ 48 49 #ifdef _KERNEL 50 51 void xpt_action(union ccb *new_ccb); 52 void xpt_setup_ccb(struct ccb_hdr *ccb_h, 53 struct cam_path *path, 54 u_int32_t priority); 55 void xpt_merge_ccb(union ccb *master_ccb, 56 union ccb *slave_ccb); 57 cam_status xpt_create_path(struct cam_path **new_path_ptr, 58 struct cam_periph *perph, 59 path_id_t path_id, 60 target_id_t target_id, lun_id_t lun_id); 61 void xpt_free_path(struct cam_path *path); 62 int xpt_path_comp(struct cam_path *path1, 63 struct cam_path *path2); 64 void xpt_print_path(struct cam_path *path); 65 int xpt_path_string(struct cam_path *path, char *str, 66 size_t str_len); 67 path_id_t xpt_path_path_id(struct cam_path *path); 68 target_id_t xpt_path_target_id(struct cam_path *path); 69 lun_id_t xpt_path_lun_id(struct cam_path *path); 70 struct cam_sim *xpt_path_sim(struct cam_path *path); 71 struct cam_periph *xpt_path_periph(struct cam_path *path); 72 void xpt_async(u_int32_t async_code, struct cam_path *path, 73 void *async_arg); 74 #endif /* _KERNEL */ 75 76 #endif /* _CAM_CAM_XPT_H */ 77 78