1 | /* $NetBSD: aic6360var.h,v 1.16 2009/09/22 13:18:28 tsutsui Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1994, 1995, 1996 Charles M. Hannum. All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. All advertising materials mentioning features or use of this software |
15 | * must display the following acknowledgement: |
16 | * This product includes software developed by Charles M. Hannum. |
17 | * 4. The name of the author may not be used to endorse or promote products |
18 | * derived from this software without specific prior written permission. |
19 | * |
20 | * Copyright (c) 1994 Jarle Greipsland |
21 | * All rights reserved. |
22 | * |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions |
25 | * are met: |
26 | * 1. Redistributions of source code must retain the above copyright |
27 | * notice, this list of conditions and the following disclaimer. |
28 | * 2. Redistributions in binary form must reproduce the above copyright |
29 | * notice, this list of conditions and the following disclaimer in the |
30 | * documentation and/or other materials provided with the distribution. |
31 | * 3. The name of the author may not be used to endorse or promote products |
32 | * derived from this software without specific prior written permission. |
33 | * |
34 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
35 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
36 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
37 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
38 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
39 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
40 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
41 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
42 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
43 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
44 | * POSSIBILITY OF SUCH DAMAGE. |
45 | */ |
46 | |
47 | #ifndef _DEV_IC_AIC6360VAR_H_ |
48 | #define _DEV_IC_AIC6360VAR_H_ |
49 | |
50 | /* |
51 | * Acknowledgements: Many of the algorithms used in this driver are |
52 | * inspired by the work of Julian Elischer (julian@tfs.com) and |
53 | * Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million! |
54 | */ |
55 | |
56 | typedef u_long physaddr; |
57 | typedef u_long physlen; |
58 | |
59 | struct aic_dma_seg { |
60 | physaddr seg_addr; |
61 | physlen seg_len; |
62 | }; |
63 | |
64 | #define AIC_NSEG 16 |
65 | |
66 | /* |
67 | * ACB. Holds additional information for each SCSI command Comments: We |
68 | * need a separate scsi command block because we may need to overwrite it |
69 | * with a request sense command. Basicly, we refrain from fiddling with |
70 | * the scsipi_xfer struct (except do the expected updating of return values). |
71 | * We'll generally update: xs->{flags,resid,error,sense,status} and |
72 | * occasionally xs->retries. |
73 | */ |
74 | struct aic_acb { |
75 | struct scsipi_generic scsipi_cmd; |
76 | int scsipi_cmd_length; |
77 | u_char *data_addr; /* Saved data pointer */ |
78 | int data_length; /* Residue */ |
79 | |
80 | u_char target_stat; /* SCSI status byte */ |
81 | |
82 | #ifdef notdef |
83 | struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */ |
84 | #endif |
85 | |
86 | TAILQ_ENTRY(aic_acb) chain; |
87 | struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ |
88 | int flags; |
89 | #define ACB_ALLOC 0x01 |
90 | #define ACB_NEXUS 0x02 |
91 | #define ACB_SENSE 0x04 |
92 | #define ACB_ABORT 0x40 |
93 | #define ACB_RESET 0x80 |
94 | int timeout; |
95 | }; |
96 | |
97 | /* |
98 | * Some info about each (possible) target on the SCSI bus. This should |
99 | * probably have been a "per target+lunit" structure, but we'll leave it at |
100 | * this for now. |
101 | */ |
102 | struct aic_tinfo { |
103 | int cmds; /* #commands processed */ |
104 | int dconns; /* #disconnects */ |
105 | int touts; /* #timeouts */ |
106 | int perrs; /* #parity errors */ |
107 | int senses; /* #request sense commands sent */ |
108 | ushort lubusy; /* What local units/subr. are busy? */ |
109 | u_char flags; |
110 | #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */ |
111 | #define DO_WIDE 0x02 /* (Re)Negotiate wide options */ |
112 | u_char period; /* Period suggestion */ |
113 | u_char offset; /* Offset suggestion */ |
114 | u_char width; /* Width suggestion */ |
115 | }; |
116 | |
117 | struct aic_softc { |
118 | device_t sc_dev; |
119 | |
120 | bus_space_tag_t sc_iot; |
121 | bus_space_handle_t sc_ioh; |
122 | |
123 | struct scsipi_adapter sc_adapter; |
124 | struct scsipi_channel sc_channel; |
125 | |
126 | TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list; |
127 | struct aic_acb *sc_nexus; /* current command */ |
128 | struct aic_acb sc_acb[8]; |
129 | struct aic_tinfo sc_tinfo[8]; |
130 | |
131 | /* Data about the current nexus (updated for every cmd switch) */ |
132 | u_char *sc_dp; /* Current data pointer */ |
133 | size_t sc_dleft; /* Data bytes left to transfer */ |
134 | u_char *sc_cp; /* Current command pointer */ |
135 | size_t sc_cleft; /* Command bytes left to transfer */ |
136 | |
137 | /* Adapter state */ |
138 | u_char sc_phase; /* Current bus phase */ |
139 | u_char sc_prevphase; /* Previous bus phase */ |
140 | u_char sc_state; /* State applicable to the adapter */ |
141 | #define AIC_INIT 0 |
142 | #define AIC_IDLE 1 |
143 | #define AIC_SELECTING 2 /* SCSI command is arbiting */ |
144 | #define AIC_RESELECTED 3 /* Has been reselected */ |
145 | #define AIC_CONNECTED 4 /* Actively using the SCSI bus */ |
146 | #define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */ |
147 | #define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */ |
148 | #define AIC_CLEANING 7 |
149 | u_char sc_flags; |
150 | #define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */ |
151 | #define AIC_ABORTING 0x02 /* Bailing out */ |
152 | #define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */ |
153 | u_char sc_selid; /* Reselection ID */ |
154 | device_t sc_child;/* Our child */ |
155 | |
156 | /* Message stuff */ |
157 | u_char sc_msgpriq; /* Messages we want to send */ |
158 | u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */ |
159 | u_char sc_lastmsg; /* Message last transmitted */ |
160 | u_char sc_currmsg; /* Message currently ready to transmit */ |
161 | #define SEND_DEV_RESET 0x01 |
162 | #define SEND_PARITY_ERROR 0x02 |
163 | #define SEND_INIT_DET_ERR 0x04 |
164 | #define SEND_REJECT 0x08 |
165 | #define SEND_IDENTIFY 0x10 |
166 | #define SEND_ABORT 0x20 |
167 | #define SEND_SDTR 0x40 |
168 | #define SEND_WDTR 0x80 |
169 | #define AIC_MAX_MSG_LEN 8 |
170 | u_char sc_omess[AIC_MAX_MSG_LEN]; |
171 | u_char *sc_omp; /* Outgoing message pointer */ |
172 | u_char sc_imess[AIC_MAX_MSG_LEN]; |
173 | u_char *sc_imp; /* Incoming message pointer */ |
174 | |
175 | /* Hardware stuff */ |
176 | int sc_initiator; /* Our scsi id */ |
177 | int sc_freq; /* Clock frequency in MHz */ |
178 | int sc_minsync; /* Minimum sync period / 4 */ |
179 | int sc_maxsync; /* Maximum sync period / 4 */ |
180 | }; |
181 | |
182 | #if AIC_DEBUG |
183 | #define AIC_SHOWACBS 0x01 |
184 | #define AIC_SHOWINTS 0x02 |
185 | #define AIC_SHOWCMDS 0x04 |
186 | #define AIC_SHOWMISC 0x08 |
187 | #define AIC_SHOWTRACE 0x10 |
188 | #define AIC_SHOWSTART 0x20 |
189 | #define AIC_DOBREAK 0x40 |
190 | extern int aic_debug; /* AIC_SHOWSTART|AIC_SHOWMISC|AIC_SHOWTRACE; */ |
191 | #define AIC_PRINT(b, s) do { \ |
192 | if ((aic_debug & (b)) != 0) \ |
193 | printf s; \ |
194 | } while (/* CONSTCOND */ 0) |
195 | #define AIC_BREAK() do { \ |
196 | if ((aic_debug & AIC_DOBREAK) != 0) \ |
197 | Debugger(); \ |
198 | } while (/* CONSTCOND */ 0) |
199 | #define AIC_ASSERT(x) do { \ |
200 | if (! (x)) { \ |
201 | printf("%s at line %d: assertion failed\n", \ |
202 | device_xname(sc->sc_dev), __LINE__); \ |
203 | Debugger(); \ |
204 | } } while (/* CONSTCOND */ 0) |
205 | #else |
206 | #define AIC_PRINT(b, s) /* NOTHING */ |
207 | #define AIC_BREAK() /* NOTHING */ |
208 | #define AIC_ASSERT(x) /* NOTHING */ |
209 | #endif |
210 | |
211 | #define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s) |
212 | #define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s) |
213 | #define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s) |
214 | #define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s) |
215 | #define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s) |
216 | #define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s) |
217 | |
218 | #define AIC_ISA_IOSIZE 0x20 /* XXX */ |
219 | |
220 | void aicattach(struct aic_softc *); |
221 | int aic_activate(device_t, enum devact); |
222 | int aic_detach(device_t, int); |
223 | int aicintr(void *); |
224 | int aic_find(bus_space_tag_t, bus_space_handle_t); |
225 | void aic_init(struct aic_softc *, int); |
226 | |
227 | #endif /* _DEV_IC_AIC6360VAR_H_ */ |
228 | |