f0f25b9c80
CAM_DEBUG_CDB, CAM_DEBUG_PERIPH and CAM_DEBUG_PROBE) by default. List of these flags can be modified with CAM_DEBUG_COMPILE kernel option. CAMDEBUG kernel option still enables all possible debug, if not overriden. Additional 50KB of kernel size is a good price for the ability to debug problems without rebuilding the kernel. In case where size is important, debugging can be compiled out by setting CAM_DEBUG_COMPILE option to 0.
122 lines
4.4 KiB
C
122 lines
4.4 KiB
C
/*-
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* Data structures and definitions for dealing with the
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* Common Access Method Transport (xpt) layer.
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*
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* Copyright (c) 1997 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _CAM_CAM_XPT_H
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#define _CAM_CAM_XPT_H 1
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/* Forward Declarations */
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union ccb;
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struct cam_periph;
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struct cam_sim;
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/*
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* Definition of a CAM path. Paths are created from bus, target, and lun ids
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* via xpt_create_path and allow for reference to devices without recurring
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* lookups in the edt.
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*/
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struct cam_path;
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/* Path functions */
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#ifdef _KERNEL
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/*
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* Definition of an async handler callback block. These are used to add
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* SIMs and peripherals to the async callback lists.
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*/
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struct async_node {
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SLIST_ENTRY(async_node) links;
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u_int32_t event_enable; /* Async Event enables */
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void (*callback)(void *arg, u_int32_t code,
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struct cam_path *path, void *args);
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void *callback_arg;
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};
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SLIST_HEAD(async_list, async_node);
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SLIST_HEAD(periph_list, cam_periph);
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void xpt_action(union ccb *new_ccb);
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void xpt_action_default(union ccb *new_ccb);
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union ccb *xpt_alloc_ccb(void);
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union ccb *xpt_alloc_ccb_nowait(void);
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void xpt_free_ccb(union ccb *free_ccb);
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void xpt_setup_ccb(struct ccb_hdr *ccb_h,
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struct cam_path *path,
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u_int32_t priority);
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void xpt_merge_ccb(union ccb *master_ccb,
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union ccb *slave_ccb);
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cam_status xpt_create_path(struct cam_path **new_path_ptr,
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struct cam_periph *perph,
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path_id_t path_id,
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target_id_t target_id, lun_id_t lun_id);
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cam_status xpt_create_path_unlocked(struct cam_path **new_path_ptr,
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struct cam_periph *perph,
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path_id_t path_id,
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target_id_t target_id, lun_id_t lun_id);
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int xpt_getattr(char *buf, size_t len, const char *attr,
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struct cam_path *path);
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void xpt_free_path(struct cam_path *path);
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void xpt_path_counts(struct cam_path *path, uint32_t *bus_ref,
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uint32_t *periph_ref, uint32_t *target_ref,
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uint32_t *device_ref);
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int xpt_path_comp(struct cam_path *path1,
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struct cam_path *path2);
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void xpt_print_path(struct cam_path *path);
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void xpt_print(struct cam_path *path, const char *fmt, ...);
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int xpt_path_string(struct cam_path *path, char *str,
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size_t str_len);
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path_id_t xpt_path_path_id(struct cam_path *path);
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target_id_t xpt_path_target_id(struct cam_path *path);
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lun_id_t xpt_path_lun_id(struct cam_path *path);
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int xpt_path_legacy_ata_id(struct cam_path *path);
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struct cam_sim *xpt_path_sim(struct cam_path *path);
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struct cam_periph *xpt_path_periph(struct cam_path *path);
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void xpt_async(u_int32_t async_code, struct cam_path *path,
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void *async_arg);
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void xpt_rescan(union ccb *ccb);
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void xpt_hold_boot(void);
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void xpt_release_boot(void);
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void xpt_lock_buses(void);
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void xpt_unlock_buses(void);
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cam_status xpt_register_async(int event, ac_callback_t *cbfunc,
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void *cbarg, struct cam_path *path);
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cam_status xpt_compile_path(struct cam_path *new_path,
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struct cam_periph *perph,
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path_id_t path_id,
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target_id_t target_id,
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lun_id_t lun_id);
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void xpt_release_path(struct cam_path *path);
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#endif /* _KERNEL */
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#endif /* _CAM_CAM_XPT_H */
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