1 /* $OpenBSD: twevar.h,v 1.7 2005/09/15 05:33:39 krw Exp $ */
2
3 /*
4 * Copyright (c) 2000 Michael Shalayeff
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 struct twe_softc;
30
31 struct twe_ccb {
32 struct twe_softc *ccb_sc;
33 struct twe_cmd *ccb_cmd;
34 struct scsi_xfer *ccb_xs;
35 paddr_t ccb_cmdpa;
36 TAILQ_ENTRY(twe_ccb) ccb_link;
37 enum {
38 TWE_CCB_FREE, TWE_CCB_READY, TWE_CCB_QUEUED, TWE_CCB_PREQUEUED,
39 TWE_CCB_DONE
40 } ccb_state;
41 int ccb_length;
42 void *ccb_data;
43 void *ccb_realdata;
44 bus_dmamap_t ccb_dmamap;
45 bus_dma_segment_t ccb_2bseg[TWE_MAXOFFSETS];
46 int ccb_2nseg;
47 };
48
49 typedef TAILQ_HEAD(twe_queue_head, twe_ccb) twe_queue_head;
50
51 struct twe_softc {
52 struct device sc_dev;
53 void *sc_ih;
54 struct scsi_link sc_link;
55 struct lock sc_lock;
56 struct proc *sc_thread;
57 int sc_thread_on;
58
59 bus_space_tag_t iot;
60 bus_space_handle_t ioh;
61 bus_dma_tag_t dmat;
62
63 void *sc_cmds;
64 bus_dmamap_t sc_cmdmap;
65 bus_dma_segment_t sc_cmdseg[1];
66 struct twe_ccb sc_ccbs[TWE_MAXCMDS];
67 twe_queue_head sc_free_ccb;
68 twe_queue_head sc_ccbq;
69 twe_queue_head sc_ccb2q;
70 twe_queue_head sc_done_ccb;
71
72 struct timeout sc_enqueue_tmo;
73
74 struct {
75 int hd_present;
76 int hd_devtype;
77 int hd_lock;
78 int hd_size;
79 } sc_hdr[TWE_MAX_UNITS];
80 };
81
82 /* XXX These have to become spinlocks in case of SMP */
83 #define TWE_LOCK(sc) splbio()
84 #define TWE_UNLOCK(sc, lock) splx(lock)
85 typedef int twe_lock_t;
86
87 void tweminphys(struct buf *bp);
88 int twe_attach(struct twe_softc *);
89 int twe_intr(void *);