91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/* $OpenBSD: twevar.h,v 1.14 2020/07/22 13:16:04 krw Exp $ */
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/*
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* Copyright (c) 2000 Michael Shalayeff
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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struct twe_softc;
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struct twe_ccb {
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struct twe_softc *ccb_sc;
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struct twe_cmd *ccb_cmd;
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struct scsi_xfer *ccb_xs;
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paddr_t ccb_cmdpa;
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TAILQ_ENTRY(twe_ccb) ccb_link;
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enum {
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TWE_CCB_FREE, TWE_CCB_READY, TWE_CCB_QUEUED, TWE_CCB_PREQUEUED,
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TWE_CCB_DONE
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} ccb_state;
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int ccb_length;
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void *ccb_data;
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void *ccb_realdata;
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bus_dmamap_t ccb_dmamap;
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bus_dma_segment_t ccb_2bseg[TWE_MAXOFFSETS];
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int ccb_2nseg;
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};
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typedef TAILQ_HEAD(twe_queue_head, twe_ccb) twe_queue_head;
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struct twe_softc {
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struct device sc_dev;
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void *sc_ih;
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struct proc *sc_thread;
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int sc_thread_on;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_dma_tag_t dmat;
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void *sc_cmds;
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bus_dmamap_t sc_cmdmap;
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bus_dma_segment_t sc_cmdseg[1];
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struct twe_ccb sc_ccbs[TWE_MAXCMDS];
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twe_queue_head sc_free_ccb;
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twe_queue_head sc_ccbq;
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twe_queue_head sc_ccb2q;
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twe_queue_head sc_done_ccb;
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struct mutex sc_ccb_mtx;
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struct scsi_iopool sc_iopool;
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struct timeout sc_enqueue_tmo;
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struct scsi_iohandler sc_aen;
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struct {
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int hd_present;
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int hd_devtype;
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int hd_lock;
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int hd_size;
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} sc_hdr[TWE_MAX_UNITS];
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};
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/* XXX These have to become spinlocks in case of SMP */
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#define TWE_LOCK(sc) splbio()
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#define TWE_UNLOCK(sc, lock) splx(lock)
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typedef int twe_lock_t;
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int twe_attach(struct twe_softc *);
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int twe_intr(void *);
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