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711f661393
to allow drivers to handle request completion directly without passing them to the CAM SWI thread removing extra context switch. Modify all ATA/SATA drivers to use them. Reviewed by: gibbs, ken MFC after: 2 weeks
60 lines
2.4 KiB
C
60 lines
2.4 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_SIM_H
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#define _CAM_CAM_XPT_SIM_H 1
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#include <cam/cam_xpt.h>
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#include <cam/cam_queue.h>
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/* Functions accessed by SIM drivers */
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#ifdef _KERNEL
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int32_t xpt_bus_register(struct cam_sim *sim, device_t parent,
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u_int32_t bus);
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int32_t xpt_bus_deregister(path_id_t path_id);
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u_int32_t xpt_freeze_simq(struct cam_sim *sim, u_int count);
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void xpt_release_simq(struct cam_sim *sim, int run_queue);
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u_int32_t xpt_freeze_devq(struct cam_path *path, u_int count);
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u_int32_t xpt_freeze_devq_rl(struct cam_path *path, cam_rl rl,
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u_int count);
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void xpt_release_devq(struct cam_path *path,
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u_int count, int run_queue);
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void xpt_release_devq_rl(struct cam_path *path, cam_rl rl,
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u_int count, int run_queue);
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int xpt_sim_opened(struct cam_sim *sim);
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void xpt_done(union ccb *done_ccb);
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void xpt_batch_start(struct cam_sim *sim);
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void xpt_batch_done(struct cam_sim *sim);
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#endif
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#endif /* _CAM_CAM_XPT_SIM_H */
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