1 /* $OpenBSD: ioprbsvar.h,v 1.2 2005/09/15 05:33:39 krw Exp $ */
2
3 /*
4 * Copyright (c) 2001 Niklas Hallqvist
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 AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #ifndef _I2O_IOPRBSVAR_H_
30 #define _I2O_IOPRBSVAR_H_
31
32 /*
33 * A command contol block, one for each corresponding command index of the
34 * controller.
35 */
36 struct ioprbs_ccb {
37 TAILQ_ENTRY(ioprbs_ccb) ic_chain;
38 struct scsi_xfer *ic_xs;
39 #if 0
40 struct aac_fib *ac_fib; /* FIB associated with this command */
41 bus_addr_t ac_fibphys; /* bus address of the FIB */
42 bus_dmamap_t ac_dmamap_xfer;
43 struct aac_sg_table *ac_sgtable;/* pointer to s/g table in command */
44 #endif
45 int ic_timeout;
46 u_int32_t ic_blockno;
47 u_int32_t ic_blockcnt;
48 u_int8_t ic_flags;
49 #define IOPRBS_ICF_WATCHDOG 0x1
50 #define IOPRBS_ICF_COMPLETED 0x2
51 };
52
53 /* XXX What is correct? */
54 #define IOPRBS_MAX_CCBS 256
55
56 struct ioprbs_softc {
57 struct device sc_dv; /* Generic device data */
58 struct scsi_link sc_link; /* Virtual SCSI bus for cache devs */
59 struct iop_initiator sc_ii;
60 struct iop_initiator sc_eventii;
61
62 int sc_flags;
63 int sc_secperunit; /* # sectors in total */
64 int sc_secsize; /* sector size in bytes */
65 int sc_maxxfer; /* max xfer size in bytes */
66 int sc_maxqueuecnt; /* maximum h/w queue depth */
67 int sc_queuecnt; /* current h/w queue depth */
68
69 struct ioprbs_ccb sc_ccbs[IOPRBS_MAX_CCBS];
70 TAILQ_HEAD(, ioprbs_ccb) sc_free_ccb, sc_ccbq;
71 /* commands on hold for controller resources */
72 TAILQ_HEAD(, ioprbs_ccb) sc_ready;
73 /* commands which have been returned by the controller */
74 LIST_HEAD(, scsi_xfer) sc_queue;
75 struct scsi_xfer *sc_queuelast;
76 };
77
78 #define IOPRBS_CLAIMED 0x01
79 #define IOPRBS_NEW_EVTMASK 0x02
80 #define IOPRBS_ENABLED 0x04
81
82 #define IOPRBS_TIMEOUT (30 * 1000)
83 #define IOPRBS_BLOCK_SIZE 512
84
85 /*
86 * Wait this long for a lost interrupt to get detected.
87 */
88 #define IOPRBS_WATCH_TIMEOUT 10000 /* 10000 * 1ms = 10s */
89
90
91 /* XXX These have to become spinlocks in case of SMP */
92 #define IOPRBS_LOCK(sc) splbio()
93 #define IOPRBS_UNLOCK(sc, lock) splx(lock)
94 typedef int ioprbs_lock_t;
95
96 #endif /* !_I2O_IOPRMSVAR_H_ */