1 /* $NetBSD: mb89352var.h,v 1.9 2004/12/07 22:23:45 thorpej Exp $ */
2 /* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */
3
4 /*-
5 * Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by Charles M. Hannum.
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * Copyright (c) 1994 Jarle Greipsland
26 * All rights reserved.
27 *
28 * Redistribution and use in source and binary forms, with or without
29 * modification, are permitted provided that the following conditions
30 * are met:
31 * 1. Redistributions of source code must retain the above copyright
32 * notice, this list of conditions and the following disclaimer.
33 * 2. Redistributions in binary form must reproduce the above copyright
34 * notice, this list of conditions and the following disclaimer in the
35 * documentation and/or other materials provided with the distribution.
36 * 3. The name of the author may not be used to endorse or promote products
37 * derived from this software without specific prior written permission.
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
40 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
41 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
43 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
44 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
45 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
48 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
49 * POSSIBILITY OF SUCH DAMAGE.
50 */
51 /*
52 * [NetBSD for NEC PC-98 series]
53 * Copyright (c) 1996, 1997, 1998
54 * NetBSD/pc98 porting staff. All rights reserved.
55 * Copyright (c) 1996, 1997, 1998
56 * Kouich Matsuda. All rights reserved.
57 */
58
59 #ifndef _MB89352VAR_H_
60 #define _MB89352VAR_H_
61 /*
62 * ACB. Holds additional information for each SCSI command Comments: We
63 * need a separate scsi command block because we may need to overwrite it
64 * with a request sense command. Basicly, we refrain from fiddling with
65 * the scsi_xfer struct (except do the expected updating of return values).
66 * We'll generally update: xs->{flags,resid,error,sense,status} and
67 * occasionally xs->retries.
68 */
69 struct spc_acb {
70 struct scsipi_generic scsipi_cmd;
71 int scsipi_cmd_length;
72 u_char *data_addr; /* Saved data pointer */
73 int data_length; /* Residue */
74
75 u_char target_stat; /* SCSI status byte */
76
77 #ifdef notdef
78 struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
79 #endif
80
81 TAILQ_ENTRY(spc_acb) chain;
82 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
83 int flags;
84 #define ACB_ALLOC 0x01
85 #define ACB_NEXUS 0x02
86 #define ACB_SENSE 0x04
87 #define ACB_ABORT 0x40
88 #define ACB_RESET 0x80
89 int timeout;
90 };
91
92 /*
93 * Some info about each (possible) target on the SCSI bus. This should
94 * probably have been a "per target+lunit" structure, but we'll leave it at
95 * this for now.
96 */
97 struct spc_tinfo {
98 int cmds; /* #commands processed */
99 int dconns; /* #disconnects */
100 int touts; /* #timeouts */
101 int perrs; /* #parity errors */
102 int senses; /* #request sense commands sent */
103 ushort lubusy; /* What local units/subr. are busy? */
104 u_char flags;
105 #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
106 #define DO_WIDE 0x02 /* (Re)Negotiate wide options */
107 u_char period; /* Period suggestion */
108 u_char offset; /* Offset suggestion */
109 u_char width; /* Width suggestion */
110 };
111
112 struct spc_softc {
113 struct device sc_dev;
114
115 bus_space_tag_t sc_iot;
116 bus_space_handle_t sc_ioh;
117
118 struct scsipi_channel sc_channel; /* prototype for subdevs */
119 struct scsipi_adapter sc_adapter;
120
121 TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
122 struct spc_acb *sc_nexus; /* current command */
123 struct spc_acb sc_acb[8];
124 struct spc_tinfo sc_tinfo[8];
125
126 /* Data about the current nexus (updated for every cmd switch) */
127 u_char *sc_dp; /* Current data pointer */
128 size_t sc_dleft; /* Data bytes left to transfer */
129 u_char *sc_cp; /* Current command pointer */
130 size_t sc_cleft; /* Command bytes left to transfer */
131
132 /* Adapter state */
133 u_char sc_phase; /* Current bus phase */
134 u_char sc_prevphase; /* Previous bus phase */
135 u_char sc_state; /* State applicable to the adapter */
136 #define SPC_INIT 0
137 #define SPC_IDLE 1
138 #define SPC_SELECTING 2 /* SCSI command is arbiting */
139 #define SPC_RESELECTED 3 /* Has been reselected */
140 #define SPC_CONNECTED 4 /* Actively using the SCSI bus */
141 #define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */
142 #define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
143 #define SPC_CLEANING 7
144 u_char sc_flags;
145 #define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
146 #define SPC_ABORTING 0x02 /* Bailing out */
147 #define SPC_DOINGDMA 0x04 /* doing DMA */
148 #define SPC_INACTIVE 0x80 /* The FIFO data path is active! */
149 u_char sc_selid; /* Reselection ID */
150 struct device *sc_child;/* Our child */
151
152 /* Message stuff */
153 u_char sc_msgpriq; /* Messages we want to send */
154 u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
155 u_char sc_lastmsg; /* Message last transmitted */
156 u_char sc_currmsg; /* Message currently ready to transmit */
157 #define SEND_DEV_RESET 0x01
158 #define SEND_PARITY_ERROR 0x02
159 #define SEND_INIT_DET_ERR 0x04
160 #define SEND_REJECT 0x08
161 #define SEND_IDENTIFY 0x10
162 #define SEND_ABORT 0x20
163 #define SEND_SDTR 0x40
164 #define SEND_WDTR 0x80
165 #define SPC_MAX_MSG_LEN 8
166 u_char sc_omess[SPC_MAX_MSG_LEN];
167 u_char *sc_omp; /* Outgoing message pointer */
168 u_char sc_imess[SPC_MAX_MSG_LEN];
169 u_char *sc_imp; /* Incoming message pointer */
170
171 /* Hardware stuff */
172 int sc_initiator; /* Our scsi id */
173 int sc_freq; /* Clock frequency in MHz */
174 int sc_minsync; /* Minimum sync period / 4 */
175 int sc_maxsync; /* Maximum sync period / 4 */
176
177 /* DMA function set from MD code */
178 void (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
179 void (*sc_dma_done)(struct spc_softc *);
180 };
181
182 #if SPC_DEBUG
183 #define SPC_SHOWACBS 0x01
184 #define SPC_SHOWINTS 0x02
185 #define SPC_SHOWCMDS 0x04
186 #define SPC_SHOWMISC 0x08
187 #define SPC_SHOWTRACE 0x10
188 #define SPC_SHOWSTART 0x20
189 #define SPC_DOBREAK 0x40
190 extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
191 #define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0)
192 #define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0)
193 #define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0)
194 #else
195 #define SPC_PRINT(b, s)
196 #define SPC_BREAK()
197 #define SPC_ASSERT(x)
198 #endif
199
200 #define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s)
201 #define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s)
202 #define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s)
203 #define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s)
204 #define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s)
205 #define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s)
206
207 void spc_attach(struct spc_softc *);
208 int spc_activate(struct device *, enum devact);
209 int spc_detach(struct device *, int);
210 int spc_intr(void *);
211 int spc_find(bus_space_tag_t, bus_space_handle_t, int);
212 void spc_init(struct spc_softc *, int);
213 void spc_sched(struct spc_softc *);
214 #endif /* _MB89352VAR_H_ */
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