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/* $OpenBSD: twevar.h,v 1.6 2003/06/02 19:24:22 mickey Exp $ */
/*
* Copyright (c) 2000 Michael Shalayeff
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 HIS RELATIVES 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 MIND, 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.
*/
struct twe_softc;
struct twe_ccb {
struct twe_softc *ccb_sc;
struct twe_cmd *ccb_cmd;
struct scsi_xfer *ccb_xs;
paddr_t ccb_cmdpa;
TAILQ_ENTRY(twe_ccb) ccb_link;
enum {
TWE_CCB_FREE, TWE_CCB_READY, TWE_CCB_QUEUED, TWE_CCB_PREQUEUED,
TWE_CCB_DONE
} ccb_state;
int ccb_length;
void *ccb_data;
void *ccb_realdata;
bus_dmamap_t ccb_dmamap;
bus_dma_segment_t ccb_2bseg[TWE_MAXOFFSETS];
int ccb_2nseg;
};
typedef TAILQ_HEAD(twe_queue_head, twe_ccb) twe_queue_head;
struct twe_softc {
struct device sc_dev;
void *sc_ih;
struct scsi_link sc_link;
struct lock sc_lock;
struct proc *sc_thread;
int sc_thread_on;
bus_space_tag_t iot;
bus_space_handle_t ioh;
bus_dma_tag_t dmat;
void *sc_cmds;
bus_dmamap_t sc_cmdmap;
bus_dma_segment_t sc_cmdseg[1];
struct twe_ccb sc_ccbs[TWE_MAXCMDS];
twe_queue_head sc_free_ccb;
twe_queue_head sc_ccbq;
twe_queue_head sc_ccb2q;
twe_queue_head sc_done_ccb;
struct timeout sc_enqueue_tmo;
struct {
int hd_present;
int hd_devtype;
int hd_lock;
int hd_secs;
int hd_heads;
int hd_size;
} sc_hdr[TWE_MAX_UNITS];
};
/* XXX These have to become spinlocks in case of SMP */
#define TWE_LOCK(sc) splbio()
#define TWE_UNLOCK(sc, lock) splx(lock)
typedef int twe_lock_t;
void tweminphys(struct buf *bp);
int twe_attach(struct twe_softc *);
int twe_intr(void *);
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