xref: /freebsd/sys/dev/aic7xxx/aic7xxx_pci.c (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
1 /*-
2  * Product specific probe and attach routines for:
3  *      3940, 2940, aic7895, aic7890, aic7880,
4  *	aic7870, aic7860 and aic7850 SCSI controllers
5  *
6  * SPDX-License-Identifier: BSD-3-Clause
7  *
8  * Copyright (c) 1994-2001 Justin T. Gibbs.
9  * Copyright (c) 2000-2001 Adaptec Inc.
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions, and the following disclaimer,
17  *    without modification.
18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19  *    substantially similar to the "NO WARRANTY" disclaimer below
20  *    ("Disclaimer") and any redistribution must be conditioned upon
21  *    including a substantially similar Disclaimer requirement for further
22  *    binary redistribution.
23  * 3. Neither the names of the above-listed copyright holders nor the names
24  *    of any contributors may be used to endorse or promote products derived
25  *    from this software without specific prior written permission.
26  *
27  * Alternatively, this software may be distributed under the terms of the
28  * GNU General Public License ("GPL") version 2 as published by the Free
29  * Software Foundation.
30  *
31  * NO WARRANTY
32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42  * POSSIBILITY OF SUCH DAMAGES.
43  *
44  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_pci.c#78 $
45  */
46 
47 #include <dev/aic7xxx/aic7xxx_osm.h>
48 #include <dev/aic7xxx/aic7xxx_inline.h>
49 #include <dev/aic7xxx/aic7xxx_93cx6.h>
50 
51 static __inline uint64_t
52 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
53 {
54 	uint64_t id;
55 
56 	id = subvendor
57 	   | (subdevice << 16)
58 	   | ((uint64_t)vendor << 32)
59 	   | ((uint64_t)device << 48);
60 
61 	return (id);
62 }
63 
64 #define ID_ALL_MASK			0xFFFFFFFFFFFFFFFFull
65 #define ID_DEV_VENDOR_MASK		0xFFFFFFFF00000000ull
66 #define ID_9005_GENERIC_MASK		0xFFF0FFFF00000000ull
67 #define ID_9005_SISL_MASK		0x000FFFFF00000000ull
68 #define ID_9005_SISL_ID			0x0005900500000000ull
69 #define ID_AIC7850			0x5078900400000000ull
70 #define ID_AHA_2902_04_10_15_20C_30C	0x5078900478509004ull
71 #define ID_AIC7855			0x5578900400000000ull
72 #define ID_AIC7859			0x3860900400000000ull
73 #define ID_AHA_2930CU			0x3860900438699004ull
74 #define ID_AIC7860			0x6078900400000000ull
75 #define ID_AIC7860C			0x6078900478609004ull
76 #define ID_AHA_1480A			0x6075900400000000ull
77 #define ID_AHA_2940AU_0			0x6178900400000000ull
78 #define ID_AHA_2940AU_1			0x6178900478619004ull
79 #define ID_AHA_2940AU_CN		0x2178900478219004ull
80 #define ID_AHA_2930C_VAR		0x6038900438689004ull
81 
82 #define ID_AIC7870			0x7078900400000000ull
83 #define ID_AHA_2940			0x7178900400000000ull
84 #define ID_AHA_3940			0x7278900400000000ull
85 #define ID_AHA_398X			0x7378900400000000ull
86 #define ID_AHA_2944			0x7478900400000000ull
87 #define ID_AHA_3944			0x7578900400000000ull
88 #define ID_AHA_4944			0x7678900400000000ull
89 
90 #define ID_AIC7880			0x8078900400000000ull
91 #define ID_AIC7880_B			0x8078900478809004ull
92 #define ID_AHA_2940U			0x8178900400000000ull
93 #define ID_AHA_3940U			0x8278900400000000ull
94 #define ID_AHA_2944U			0x8478900400000000ull
95 #define ID_AHA_3944U			0x8578900400000000ull
96 #define ID_AHA_398XU			0x8378900400000000ull
97 #define ID_AHA_4944U			0x8678900400000000ull
98 #define ID_AHA_2940UB			0x8178900478819004ull
99 #define ID_AHA_2930U			0x8878900478889004ull
100 #define ID_AHA_2940U_PRO		0x8778900478879004ull
101 #define ID_AHA_2940U_CN			0x0078900478009004ull
102 
103 #define ID_AIC7895			0x7895900478959004ull
104 #define ID_AIC7895_ARO			0x7890900478939004ull
105 #define ID_AIC7895_ARO_MASK		0xFFF0FFFFFFFFFFFFull
106 #define ID_AHA_2940U_DUAL		0x7895900478919004ull
107 #define ID_AHA_3940AU			0x7895900478929004ull
108 #define ID_AHA_3944AU			0x7895900478949004ull
109 
110 #define ID_AIC7890			0x001F9005000F9005ull
111 #define ID_AIC7890_ARO			0x00139005000F9005ull
112 #define ID_AAA_131U2			0x0013900500039005ull
113 #define ID_AHA_2930U2			0x0011900501819005ull
114 #define ID_AHA_2940U2B			0x00109005A1009005ull
115 #define ID_AHA_2940U2_OEM		0x0010900521809005ull
116 #define ID_AHA_2940U2			0x00109005A1809005ull
117 #define ID_AHA_2950U2B			0x00109005E1009005ull
118 
119 #define ID_AIC7892			0x008F9005FFFF9005ull
120 #define ID_AIC7892_ARO			0x00839005FFFF9005ull
121 #define ID_AHA_29160			0x00809005E2A09005ull
122 #define ID_AHA_29160_CPQ		0x00809005E2A00E11ull
123 #define ID_AHA_29160N			0x0080900562A09005ull
124 #define ID_AHA_29160C			0x0080900562209005ull
125 #define ID_AHA_29160B			0x00809005E2209005ull
126 #define ID_AHA_19160B			0x0081900562A19005ull
127 #define ID_AHA_2915_30LP		0x0082900502109005ull
128 
129 #define ID_AIC7896			0x005F9005FFFF9005ull
130 #define ID_AIC7896_ARO			0x00539005FFFF9005ull
131 #define ID_AHA_3950U2B_0		0x00509005FFFF9005ull
132 #define ID_AHA_3950U2B_1		0x00509005F5009005ull
133 #define ID_AHA_3950U2D_0		0x00519005FFFF9005ull
134 #define ID_AHA_3950U2D_1		0x00519005B5009005ull
135 
136 #define ID_AIC7899			0x00CF9005FFFF9005ull
137 #define ID_AIC7899_ARO			0x00C39005FFFF9005ull
138 #define ID_AHA_3960D			0x00C09005F6209005ull
139 #define ID_AHA_3960D_CPQ		0x00C09005F6200E11ull
140 
141 #define ID_AIC7810			0x1078900400000000ull
142 #define ID_AIC7815			0x7815900400000000ull
143 
144 #define DEVID_9005_TYPE(id) ((id) & 0xF)
145 #define		DEVID_9005_TYPE_HBA		0x0	/* Standard Card */
146 #define		DEVID_9005_TYPE_AAA		0x3	/* RAID Card */
147 #define		DEVID_9005_TYPE_SISL		0x5	/* Container ROMB */
148 #define		DEVID_9005_TYPE_MB		0xF	/* On Motherboard */
149 
150 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
151 #define		DEVID_9005_MAXRATE_U160		0x0
152 #define		DEVID_9005_MAXRATE_ULTRA2	0x1
153 #define		DEVID_9005_MAXRATE_ULTRA	0x2
154 #define		DEVID_9005_MAXRATE_FAST		0x3
155 
156 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
157 
158 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
159 #define		DEVID_9005_CLASS_SPI		0x0	/* Parallel SCSI */
160 
161 #define SUBID_9005_TYPE(id) ((id) & 0xF)
162 #define		SUBID_9005_TYPE_MB		0xF	/* On Motherboard */
163 #define		SUBID_9005_TYPE_CARD		0x0	/* Standard Card */
164 #define		SUBID_9005_TYPE_LCCARD		0x1	/* Low Cost Card */
165 #define		SUBID_9005_TYPE_RAID		0x3	/* Combined with Raid */
166 
167 #define SUBID_9005_TYPE_KNOWN(id)			\
168 	  ((((id) & 0xF) == SUBID_9005_TYPE_MB)		\
169 	|| (((id) & 0xF) == SUBID_9005_TYPE_CARD)	\
170 	|| (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)	\
171 	|| (((id) & 0xF) == SUBID_9005_TYPE_RAID))
172 
173 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
174 #define		SUBID_9005_MAXRATE_ULTRA2	0x0
175 #define		SUBID_9005_MAXRATE_ULTRA	0x1
176 #define		SUBID_9005_MAXRATE_U160		0x2
177 #define		SUBID_9005_MAXRATE_RESERVED	0x3
178 
179 #define SUBID_9005_SEEPTYPE(id)						\
180 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
181 	 ? ((id) & 0xC0) >> 6						\
182 	 : ((id) & 0x300) >> 8)
183 #define		SUBID_9005_SEEPTYPE_NONE	0x0
184 #define		SUBID_9005_SEEPTYPE_1K		0x1
185 #define		SUBID_9005_SEEPTYPE_2K_4K	0x2
186 #define		SUBID_9005_SEEPTYPE_RESERVED	0x3
187 #define SUBID_9005_AUTOTERM(id)						\
188 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
189 	 ? (((id) & 0x400) >> 10) == 0					\
190 	 : (((id) & 0x40) >> 6) == 0)
191 
192 #define SUBID_9005_NUMCHAN(id)						\
193 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
194 	 ? ((id) & 0x300) >> 8						\
195 	 : ((id) & 0xC00) >> 10)
196 
197 #define SUBID_9005_LEGACYCONN(id)					\
198 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
199 	 ? 0								\
200 	 : ((id) & 0x80) >> 7)
201 
202 #define SUBID_9005_MFUNCENB(id)						\
203 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
204 	 ? ((id) & 0x800) >> 11						\
205 	 : ((id) & 0x1000) >> 12)
206 /*
207  * Informational only. Should use chip register to be
208  * certain, but may be use in identification strings.
209  */
210 #define SUBID_9005_CARD_SCSIWIDTH_MASK	0x2000
211 #define SUBID_9005_CARD_PCIWIDTH_MASK	0x4000
212 #define SUBID_9005_CARD_SEDIFF_MASK	0x8000
213 
214 static ahc_device_setup_t ahc_aic785X_setup;
215 static ahc_device_setup_t ahc_aic7860_setup;
216 static ahc_device_setup_t ahc_apa1480_setup;
217 static ahc_device_setup_t ahc_aic7870_setup;
218 static ahc_device_setup_t ahc_aha394X_setup;
219 static ahc_device_setup_t ahc_aha494X_setup;
220 static ahc_device_setup_t ahc_aha398X_setup;
221 static ahc_device_setup_t ahc_aic7880_setup;
222 static ahc_device_setup_t ahc_aha2940Pro_setup;
223 static ahc_device_setup_t ahc_aha394XU_setup;
224 static ahc_device_setup_t ahc_aha398XU_setup;
225 static ahc_device_setup_t ahc_aic7890_setup;
226 static ahc_device_setup_t ahc_aic7892_setup;
227 static ahc_device_setup_t ahc_aic7895_setup;
228 static ahc_device_setup_t ahc_aic7896_setup;
229 static ahc_device_setup_t ahc_aic7899_setup;
230 static ahc_device_setup_t ahc_aha29160C_setup;
231 static ahc_device_setup_t ahc_raid_setup;
232 static ahc_device_setup_t ahc_aha394XX_setup;
233 static ahc_device_setup_t ahc_aha494XX_setup;
234 static ahc_device_setup_t ahc_aha398XX_setup;
235 
236 struct ahc_pci_identity ahc_pci_ident_table [] =
237 {
238 	/* aic7850 based controllers */
239 	{
240 		ID_AHA_2902_04_10_15_20C_30C,
241 		ID_ALL_MASK,
242 		"Adaptec 2902/04/10/15/20C/30C SCSI adapter",
243 		ahc_aic785X_setup
244 	},
245 	/* aic7860 based controllers */
246 	{
247 		ID_AHA_2930CU,
248 		ID_ALL_MASK,
249 		"Adaptec 2930CU SCSI adapter",
250 		ahc_aic7860_setup
251 	},
252 	{
253 		ID_AHA_1480A & ID_DEV_VENDOR_MASK,
254 		ID_DEV_VENDOR_MASK,
255 		"Adaptec 1480A Ultra SCSI adapter",
256 		ahc_apa1480_setup
257 	},
258 	{
259 		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
260 		ID_DEV_VENDOR_MASK,
261 		"Adaptec 2940A Ultra SCSI adapter",
262 		ahc_aic7860_setup
263 	},
264 	{
265 		ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
266 		ID_DEV_VENDOR_MASK,
267 		"Adaptec 2940A/CN Ultra SCSI adapter",
268 		ahc_aic7860_setup
269 	},
270 	{
271 		ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
272 		ID_DEV_VENDOR_MASK,
273 		"Adaptec 2930C Ultra SCSI adapter (VAR)",
274 		ahc_aic7860_setup
275 	},
276 	/* aic7870 based controllers */
277 	{
278 		ID_AHA_2940,
279 		ID_ALL_MASK,
280 		"Adaptec 2940 SCSI adapter",
281 		ahc_aic7870_setup
282 	},
283 	{
284 		ID_AHA_3940,
285 		ID_ALL_MASK,
286 		"Adaptec 3940 SCSI adapter",
287 		ahc_aha394X_setup
288 	},
289 	{
290 		ID_AHA_398X,
291 		ID_ALL_MASK,
292 		"Adaptec 398X SCSI RAID adapter",
293 		ahc_aha398X_setup
294 	},
295 	{
296 		ID_AHA_2944,
297 		ID_ALL_MASK,
298 		"Adaptec 2944 SCSI adapter",
299 		ahc_aic7870_setup
300 	},
301 	{
302 		ID_AHA_3944,
303 		ID_ALL_MASK,
304 		"Adaptec 3944 SCSI adapter",
305 		ahc_aha394X_setup
306 	},
307 	{
308 		ID_AHA_4944,
309 		ID_ALL_MASK,
310 		"Adaptec 4944 SCSI adapter",
311 		ahc_aha494X_setup
312 	},
313 	/* aic7880 based controllers */
314 	{
315 		ID_AHA_2940U & ID_DEV_VENDOR_MASK,
316 		ID_DEV_VENDOR_MASK,
317 		"Adaptec 2940 Ultra SCSI adapter",
318 		ahc_aic7880_setup
319 	},
320 	{
321 		ID_AHA_3940U & ID_DEV_VENDOR_MASK,
322 		ID_DEV_VENDOR_MASK,
323 		"Adaptec 3940 Ultra SCSI adapter",
324 		ahc_aha394XU_setup
325 	},
326 	{
327 		ID_AHA_2944U & ID_DEV_VENDOR_MASK,
328 		ID_DEV_VENDOR_MASK,
329 		"Adaptec 2944 Ultra SCSI adapter",
330 		ahc_aic7880_setup
331 	},
332 	{
333 		ID_AHA_3944U & ID_DEV_VENDOR_MASK,
334 		ID_DEV_VENDOR_MASK,
335 		"Adaptec 3944 Ultra SCSI adapter",
336 		ahc_aha394XU_setup
337 	},
338 	{
339 		ID_AHA_398XU & ID_DEV_VENDOR_MASK,
340 		ID_DEV_VENDOR_MASK,
341 		"Adaptec 398X Ultra SCSI RAID adapter",
342 		ahc_aha398XU_setup
343 	},
344 	{
345 		/*
346 		 * XXX Don't know the slot numbers
347 		 * so we can't identify channels
348 		 */
349 		ID_AHA_4944U & ID_DEV_VENDOR_MASK,
350 		ID_DEV_VENDOR_MASK,
351 		"Adaptec 4944 Ultra SCSI adapter",
352 		ahc_aic7880_setup
353 	},
354 	{
355 		ID_AHA_2930U & ID_DEV_VENDOR_MASK,
356 		ID_DEV_VENDOR_MASK,
357 		"Adaptec 2930 Ultra SCSI adapter",
358 		ahc_aic7880_setup
359 	},
360 	{
361 		ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
362 		ID_DEV_VENDOR_MASK,
363 		"Adaptec 2940 Pro Ultra SCSI adapter",
364 		ahc_aha2940Pro_setup
365 	},
366 	{
367 		ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
368 		ID_DEV_VENDOR_MASK,
369 		"Adaptec 2940/CN Ultra SCSI adapter",
370 		ahc_aic7880_setup
371 	},
372 	/* Ignore all SISL (AAC on MB) based controllers. */
373 	{
374 		ID_9005_SISL_ID,
375 		ID_9005_SISL_MASK,
376 		NULL,
377 		NULL
378 	},
379 	/* aic7890 based controllers */
380 	{
381 		ID_AHA_2930U2,
382 		ID_ALL_MASK,
383 		"Adaptec 2930 Ultra2 SCSI adapter",
384 		ahc_aic7890_setup
385 	},
386 	{
387 		ID_AHA_2940U2B,
388 		ID_ALL_MASK,
389 		"Adaptec 2940B Ultra2 SCSI adapter",
390 		ahc_aic7890_setup
391 	},
392 	{
393 		ID_AHA_2940U2_OEM,
394 		ID_ALL_MASK,
395 		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
396 		ahc_aic7890_setup
397 	},
398 	{
399 		ID_AHA_2940U2,
400 		ID_ALL_MASK,
401 		"Adaptec 2940 Ultra2 SCSI adapter",
402 		ahc_aic7890_setup
403 	},
404 	{
405 		ID_AHA_2950U2B,
406 		ID_ALL_MASK,
407 		"Adaptec 2950 Ultra2 SCSI adapter",
408 		ahc_aic7890_setup
409 	},
410 	{
411 		ID_AIC7890_ARO,
412 		ID_ALL_MASK,
413 		"Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
414 		ahc_aic7890_setup
415 	},
416 	{
417 		ID_AAA_131U2,
418 		ID_ALL_MASK,
419 		"Adaptec AAA-131 Ultra2 RAID adapter",
420 		ahc_aic7890_setup
421 	},
422 	/* aic7892 based controllers */
423 	{
424 		ID_AHA_29160,
425 		ID_ALL_MASK,
426 		"Adaptec 29160 Ultra160 SCSI adapter",
427 		ahc_aic7892_setup
428 	},
429 	{
430 		ID_AHA_29160_CPQ,
431 		ID_ALL_MASK,
432 		"Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
433 		ahc_aic7892_setup
434 	},
435 	{
436 		ID_AHA_29160N,
437 		ID_ALL_MASK,
438 		"Adaptec 29160N Ultra160 SCSI adapter",
439 		ahc_aic7892_setup
440 	},
441 	{
442 		ID_AHA_29160C,
443 		ID_ALL_MASK,
444 		"Adaptec 29160C Ultra160 SCSI adapter",
445 		ahc_aha29160C_setup
446 	},
447 	{
448 		ID_AHA_29160B,
449 		ID_ALL_MASK,
450 		"Adaptec 29160B Ultra160 SCSI adapter",
451 		ahc_aic7892_setup
452 	},
453 	{
454 		ID_AHA_19160B,
455 		ID_ALL_MASK,
456 		"Adaptec 19160B Ultra160 SCSI adapter",
457 		ahc_aic7892_setup
458 	},
459 	{
460 		ID_AIC7892_ARO,
461 		ID_ALL_MASK,
462 		"Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
463 		ahc_aic7892_setup
464 	},
465 	{
466 		ID_AHA_2915_30LP,
467 		ID_ALL_MASK,
468 		"Adaptec 2915/30LP Ultra160 SCSI adapter",
469 		ahc_aic7892_setup
470 	},
471 	/* aic7895 based controllers */
472 	{
473 		ID_AHA_2940U_DUAL,
474 		ID_ALL_MASK,
475 		"Adaptec 2940/DUAL Ultra SCSI adapter",
476 		ahc_aic7895_setup
477 	},
478 	{
479 		ID_AHA_3940AU,
480 		ID_ALL_MASK,
481 		"Adaptec 3940A Ultra SCSI adapter",
482 		ahc_aic7895_setup
483 	},
484 	{
485 		ID_AHA_3944AU,
486 		ID_ALL_MASK,
487 		"Adaptec 3944A Ultra SCSI adapter",
488 		ahc_aic7895_setup
489 	},
490 	{
491 		ID_AIC7895_ARO,
492 		ID_AIC7895_ARO_MASK,
493 		"Adaptec aic7895 Ultra SCSI adapter (ARO)",
494 		ahc_aic7895_setup
495 	},
496 	/* aic7896/97 based controllers */
497 	{
498 		ID_AHA_3950U2B_0,
499 		ID_ALL_MASK,
500 		"Adaptec 3950B Ultra2 SCSI adapter",
501 		ahc_aic7896_setup
502 	},
503 	{
504 		ID_AHA_3950U2B_1,
505 		ID_ALL_MASK,
506 		"Adaptec 3950B Ultra2 SCSI adapter",
507 		ahc_aic7896_setup
508 	},
509 	{
510 		ID_AHA_3950U2D_0,
511 		ID_ALL_MASK,
512 		"Adaptec 3950D Ultra2 SCSI adapter",
513 		ahc_aic7896_setup
514 	},
515 	{
516 		ID_AHA_3950U2D_1,
517 		ID_ALL_MASK,
518 		"Adaptec 3950D Ultra2 SCSI adapter",
519 		ahc_aic7896_setup
520 	},
521 	{
522 		ID_AIC7896_ARO,
523 		ID_ALL_MASK,
524 		"Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
525 		ahc_aic7896_setup
526 	},
527 	/* aic7899 based controllers */
528 	{
529 		ID_AHA_3960D,
530 		ID_ALL_MASK,
531 		"Adaptec 3960D Ultra160 SCSI adapter",
532 		ahc_aic7899_setup
533 	},
534 	{
535 		ID_AHA_3960D_CPQ,
536 		ID_ALL_MASK,
537 		"Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
538 		ahc_aic7899_setup
539 	},
540 	{
541 		ID_AIC7899_ARO,
542 		ID_ALL_MASK,
543 		"Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
544 		ahc_aic7899_setup
545 	},
546 	/* Generic chip probes for devices we don't know 'exactly' */
547 	{
548 		ID_AIC7850 & ID_DEV_VENDOR_MASK,
549 		ID_DEV_VENDOR_MASK,
550 		"Adaptec aic7850 SCSI adapter",
551 		ahc_aic785X_setup
552 	},
553 	{
554 		ID_AIC7855 & ID_DEV_VENDOR_MASK,
555 		ID_DEV_VENDOR_MASK,
556 		"Adaptec aic7855 SCSI adapter",
557 		ahc_aic785X_setup
558 	},
559 	{
560 		ID_AIC7859 & ID_DEV_VENDOR_MASK,
561 		ID_DEV_VENDOR_MASK,
562 		"Adaptec aic7859 SCSI adapter",
563 		ahc_aic7860_setup
564 	},
565 	{
566 		ID_AIC7860 & ID_DEV_VENDOR_MASK,
567 		ID_DEV_VENDOR_MASK,
568 		"Adaptec aic7860 Ultra SCSI adapter",
569 		ahc_aic7860_setup
570 	},
571 	{
572 		ID_AIC7870 & ID_DEV_VENDOR_MASK,
573 		ID_DEV_VENDOR_MASK,
574 		"Adaptec aic7870 SCSI adapter",
575 		ahc_aic7870_setup
576 	},
577 	{
578 		ID_AIC7880 & ID_DEV_VENDOR_MASK,
579 		ID_DEV_VENDOR_MASK,
580 		"Adaptec aic7880 Ultra SCSI adapter",
581 		ahc_aic7880_setup
582 	},
583 	{
584 		ID_AIC7890 & ID_9005_GENERIC_MASK,
585 		ID_9005_GENERIC_MASK,
586 		"Adaptec aic7890/91 Ultra2 SCSI adapter",
587 		ahc_aic7890_setup
588 	},
589 	{
590 		ID_AIC7892 & ID_9005_GENERIC_MASK,
591 		ID_9005_GENERIC_MASK,
592 		"Adaptec aic7892 Ultra160 SCSI adapter",
593 		ahc_aic7892_setup
594 	},
595 	{
596 		ID_AIC7895 & ID_DEV_VENDOR_MASK,
597 		ID_DEV_VENDOR_MASK,
598 		"Adaptec aic7895 Ultra SCSI adapter",
599 		ahc_aic7895_setup
600 	},
601 	{
602 		ID_AIC7896 & ID_9005_GENERIC_MASK,
603 		ID_9005_GENERIC_MASK,
604 		"Adaptec aic7896/97 Ultra2 SCSI adapter",
605 		ahc_aic7896_setup
606 	},
607 	{
608 		ID_AIC7899 & ID_9005_GENERIC_MASK,
609 		ID_9005_GENERIC_MASK,
610 		"Adaptec aic7899 Ultra160 SCSI adapter",
611 		ahc_aic7899_setup
612 	},
613 	{
614 		ID_AIC7810 & ID_DEV_VENDOR_MASK,
615 		ID_DEV_VENDOR_MASK,
616 		"Adaptec aic7810 RAID memory controller",
617 		ahc_raid_setup
618 	},
619 	{
620 		ID_AIC7815 & ID_DEV_VENDOR_MASK,
621 		ID_DEV_VENDOR_MASK,
622 		"Adaptec aic7815 RAID memory controller",
623 		ahc_raid_setup
624 	}
625 };
626 
627 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
628 
629 #define AHC_394X_SLOT_CHANNEL_A	4
630 #define AHC_394X_SLOT_CHANNEL_B	5
631 
632 #define AHC_398X_SLOT_CHANNEL_A	4
633 #define AHC_398X_SLOT_CHANNEL_B	8
634 #define AHC_398X_SLOT_CHANNEL_C	12
635 
636 #define AHC_494X_SLOT_CHANNEL_A	4
637 #define AHC_494X_SLOT_CHANNEL_B	5
638 #define AHC_494X_SLOT_CHANNEL_C	6
639 #define AHC_494X_SLOT_CHANNEL_D	7
640 
641 #define	DEVCONFIG		0x40
642 #define		PCIERRGENDIS	0x80000000ul
643 #define		SCBSIZE32	0x00010000ul	/* aic789X only */
644 #define		REXTVALID	0x00001000ul	/* ultra cards only */
645 #define		MPORTMODE	0x00000400ul	/* aic7870+ only */
646 #define		RAMPSM		0x00000200ul	/* aic7870+ only */
647 #define		VOLSENSE	0x00000100ul
648 #define		PCI64BIT	0x00000080ul	/* 64Bit PCI bus (Ultra2 Only)*/
649 #define		SCBRAMSEL	0x00000080ul
650 #define		MRDCEN		0x00000040ul
651 #define		EXTSCBTIME	0x00000020ul	/* aic7870 only */
652 #define		EXTSCBPEN	0x00000010ul	/* aic7870 only */
653 #define		BERREN		0x00000008ul
654 #define		DACEN		0x00000004ul
655 #define		STPWLEVEL	0x00000002ul
656 #define		DIFACTNEGEN	0x00000001ul	/* aic7870 only */
657 
658 #define	CSIZE_LATTIME		0x0c
659 #define		CACHESIZE	0x0000003ful	/* only 5 bits */
660 #define		LATTIME		0x0000ff00ul
661 
662 /* PCI STATUS definitions */
663 #define	DPE	0x80
664 #define SSE	0x40
665 #define	RMA	0x20
666 #define	RTA	0x10
667 #define STA	0x08
668 #define DPR	0x01
669 
670 static int ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
671 				     uint16_t subdevice, uint16_t subvendor);
672 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
673 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
674 				  int pcheck, int fast, int large);
675 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
676 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
677 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
678 				 struct seeprom_config *sc);
679 static void configure_termination(struct ahc_softc *ahc,
680 				  struct seeprom_descriptor *sd,
681 				  u_int adapter_control,
682 	 			  u_int *sxfrctl1);
683 
684 static void ahc_new_term_detect(struct ahc_softc *ahc,
685 				int *enableSEC_low,
686 				int *enableSEC_high,
687 				int *enablePRI_low,
688 				int *enablePRI_high,
689 				int *eeprom_present);
690 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
691 				 int *internal68_present,
692 				 int *externalcable_present,
693 				 int *eeprom_present);
694 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
695 				 int *externalcable_present,
696 				 int *eeprom_present);
697 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
698 static uint8_t read_brdctl(struct ahc_softc *ahc);
699 static void ahc_pci_intr(struct ahc_softc *ahc);
700 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
701 static int  ahc_pci_suspend(struct ahc_softc *ahc);
702 static int  ahc_pci_resume(struct ahc_softc *ahc);
703 
704 static int
705 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
706 			  uint16_t subdevice, uint16_t subvendor)
707 {
708 	int result;
709 
710 	/* Default to invalid. */
711 	result = 0;
712 	if (vendor == 0x9005
713 	 && subvendor == 0x9005
714          && subdevice != device
715          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
716 		switch (SUBID_9005_TYPE(subdevice)) {
717 		case SUBID_9005_TYPE_MB:
718 			break;
719 		case SUBID_9005_TYPE_CARD:
720 		case SUBID_9005_TYPE_LCCARD:
721 			/*
722 			 * Currently only trust Adaptec cards to
723 			 * get the sub device info correct.
724 			 */
725 			if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
726 				result = 1;
727 			break;
728 		case SUBID_9005_TYPE_RAID:
729 			break;
730 		default:
731 			break;
732 		}
733 	}
734 	return (result);
735 }
736 
737 struct ahc_pci_identity *
738 ahc_find_pci_device(aic_dev_softc_t pci)
739 {
740 	uint64_t  full_id;
741 	uint16_t  device;
742 	uint16_t  vendor;
743 	uint16_t  subdevice;
744 	uint16_t  subvendor;
745 	struct	  ahc_pci_identity *entry;
746 	u_int	  i;
747 
748 	vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
749 	device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
750 	subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
751 	subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
752 	full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
753 
754 	/*
755 	 * If the second function is not hooked up, ignore it.
756 	 * Unfortunately, not all MB vendors implement the
757 	 * subdevice ID as per the Adaptec spec, so do our best
758 	 * to sanity check it prior to accepting the subdevice
759 	 * ID as valid.
760 	 */
761 	if (aic_get_pci_function(pci) > 0
762 	 && ahc_9005_subdevinfo_valid(device, vendor, subdevice, subvendor)
763 	 && SUBID_9005_MFUNCENB(subdevice) == 0)
764 		return (NULL);
765 
766 	for (i = 0; i < ahc_num_pci_devs; i++) {
767 		entry = &ahc_pci_ident_table[i];
768 		if (entry->full_id == (full_id & entry->id_mask)) {
769 			/* Honor exclusion entries. */
770 			if (entry->name == NULL)
771 				return (NULL);
772 			return (entry);
773 		}
774 	}
775 	return (NULL);
776 }
777 
778 int
779 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
780 {
781 	u_int	 command;
782 	u_int	 our_id;
783 	u_int	 sxfrctl1;
784 	u_int	 scsiseq;
785 	u_int	 dscommand0;
786 	uint32_t devconfig;
787 	int	 error;
788 	uint8_t	 sblkctl;
789 
790 	our_id = 0;
791 	error = entry->setup(ahc);
792 	if (error != 0)
793 		return (error);
794 	ahc->chip |= AHC_PCI;
795 	ahc->description = entry->name;
796 
797 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
798 
799 	error = ahc_pci_map_registers(ahc);
800 	if (error != 0)
801 		return (error);
802 
803 	/*
804 	 * Before we continue probing the card, ensure that
805 	 * its interrupts are *disabled*.  We don't want
806 	 * a misstep to hang the machine in an interrupt
807 	 * storm.
808 	 */
809 	ahc_intr_enable(ahc, FALSE);
810 
811 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
812 
813 	/*
814 	 * If we need to support high memory, enable dual
815 	 * address cycles.  This bit must be set to enable
816 	 * high address bit generation even if we are on a
817 	 * 64bit bus (PCI64BIT set in devconfig).
818 	 */
819 	if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
820 		if (bootverbose)
821 			printf("%s: Enabling 39Bit Addressing\n",
822 			       ahc_name(ahc));
823 		devconfig |= DACEN;
824 	}
825 
826 	/* Ensure that pci error generation, a test feature, is disabled. */
827 	devconfig |= PCIERRGENDIS;
828 
829 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
830 
831 	/* Ensure busmastering is enabled */
832 	command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
833 	command |= PCIM_CMD_BUSMASTEREN;
834 
835 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
836 
837 	/* On all PCI adapters, we allow SCB paging */
838 	ahc->flags |= AHC_PAGESCBS;
839 
840 	error = ahc_softc_init(ahc);
841 	if (error != 0)
842 		return (error);
843 
844 	/*
845 	 * Disable PCI parity error checking.  Users typically
846 	 * do this to work around broken PCI chipsets that get
847 	 * the parity timing wrong and thus generate lots of spurious
848 	 * errors.  The chip only allows us to disable *all* parity
849 	 * error reporting when doing this, so CIO bus, scb ram, and
850 	 * scratch ram parity errors will be ignored too.
851 	 */
852 	if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
853 		ahc->seqctl |= FAILDIS;
854 
855 	ahc->bus_intr = ahc_pci_intr;
856 	ahc->bus_chip_init = ahc_pci_chip_init;
857 	ahc->bus_suspend = ahc_pci_suspend;
858 	ahc->bus_resume = ahc_pci_resume;
859 
860 	/* Remember how the card was setup in case there is no SEEPROM */
861 	if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
862 		ahc_pause(ahc);
863 		if ((ahc->features & AHC_ULTRA2) != 0)
864 			our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
865 		else
866 			our_id = ahc_inb(ahc, SCSIID) & OID;
867 		sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
868 		scsiseq = ahc_inb(ahc, SCSISEQ);
869 	} else {
870 		sxfrctl1 = STPWEN;
871 		our_id = 7;
872 		scsiseq = 0;
873 	}
874 
875 	error = ahc_reset(ahc, /*reinit*/FALSE);
876 	if (error != 0)
877 		return (ENXIO);
878 
879 	if ((ahc->features & AHC_DT) != 0) {
880 		u_int sfunct;
881 
882 		/* Perform ALT-Mode Setup */
883 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
884 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
885 		ahc_outb(ahc, OPTIONMODE,
886 			 OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
887 		ahc_outb(ahc, SFUNCT, sfunct);
888 
889 		/* Normal mode setup */
890 		ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
891 					  |TARGCRCENDEN);
892 	}
893 
894 	dscommand0 = ahc_inb(ahc, DSCOMMAND0);
895 	dscommand0 |= MPARCKEN|CACHETHEN;
896 	if ((ahc->features & AHC_ULTRA2) != 0) {
897 		/*
898 		 * DPARCKEN doesn't work correctly on
899 		 * some MBs so don't use it.
900 		 */
901 		dscommand0 &= ~DPARCKEN;
902 	}
903 
904 	/*
905 	 * Handle chips that must have cache line
906 	 * streaming (dis/en)abled.
907 	 */
908 	if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
909 		dscommand0 |= CACHETHEN;
910 
911 	if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
912 		dscommand0 &= ~CACHETHEN;
913 
914 	ahc_outb(ahc, DSCOMMAND0, dscommand0);
915 
916 	ahc->pci_cachesize =
917 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
918 				/*bytes*/1) & CACHESIZE;
919 	ahc->pci_cachesize *= 4;
920 
921 	if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
922 	 && ahc->pci_cachesize == 4) {
923 		aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
924 				     0, /*bytes*/1);
925 		ahc->pci_cachesize = 0;
926 	}
927 
928 	/*
929 	 * We cannot perform ULTRA speeds without the presence
930 	 * of the external precision resistor.
931 	 */
932 	if ((ahc->features & AHC_ULTRA) != 0) {
933 		uint32_t devconfig;
934 
935 		devconfig = aic_pci_read_config(ahc->dev_softc,
936 						DEVCONFIG, /*bytes*/4);
937 		if ((devconfig & REXTVALID) == 0)
938 			ahc->features &= ~AHC_ULTRA;
939 	}
940 
941 	/* See if we have a SEEPROM and perform auto-term */
942 	check_extport(ahc, &sxfrctl1);
943 
944 	/*
945 	 * Take the LED out of diagnostic mode
946 	 */
947 	sblkctl = ahc_inb(ahc, SBLKCTL);
948 	ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
949 
950 	if ((ahc->features & AHC_ULTRA2) != 0) {
951 		ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
952 	} else {
953 		ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
954 	}
955 
956 	if (ahc->flags & AHC_USEDEFAULTS) {
957 		/*
958 		 * PCI Adapter default setup
959 		 * Should only be used if the adapter does not have
960 		 * a SEEPROM.
961 		 */
962 		/* See if someone else set us up already */
963 		if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
964 		 && scsiseq != 0) {
965 			printf("%s: Using left over BIOS settings\n",
966 				ahc_name(ahc));
967 			ahc->flags &= ~AHC_USEDEFAULTS;
968 			ahc->flags |= AHC_BIOS_ENABLED;
969 		} else {
970 			/*
971 			 * Assume only one connector and always turn
972 			 * on termination.
973 			 */
974  			our_id = 0x07;
975 			sxfrctl1 = STPWEN;
976 		}
977 		ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
978 
979 		ahc->our_id = our_id;
980 	}
981 
982 	/*
983 	 * Take a look to see if we have external SRAM.
984 	 * We currently do not attempt to use SRAM that is
985 	 * shared among multiple controllers.
986 	 */
987 	ahc_probe_ext_scbram(ahc);
988 
989 	/*
990 	 * Record our termination setting for the
991 	 * generic initialization routine.
992 	 */
993 	if ((sxfrctl1 & STPWEN) != 0)
994 		ahc->flags |= AHC_TERM_ENB_A;
995 
996 	/*
997 	 * Save chip register configuration data for chip resets
998 	 * that occur during runtime and resume events.
999 	 */
1000 	ahc->bus_softc.pci_softc.devconfig =
1001 	    aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1002 	ahc->bus_softc.pci_softc.command =
1003 	    aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
1004 	ahc->bus_softc.pci_softc.csize_lattime =
1005 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
1006 	ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1007 	ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
1008 	if ((ahc->features & AHC_DT) != 0) {
1009 		u_int sfunct;
1010 
1011 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
1012 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
1013 		ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
1014 		ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
1015 		ahc_outb(ahc, SFUNCT, sfunct);
1016 		ahc->bus_softc.pci_softc.crccontrol1 =
1017 		    ahc_inb(ahc, CRCCONTROL1);
1018 	}
1019 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
1020 		ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
1021 
1022 	if ((ahc->features & AHC_ULTRA2) != 0)
1023 		ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
1024 
1025 	/* Core initialization */
1026 	error = ahc_init(ahc);
1027 	if (error != 0)
1028 		return (error);
1029 
1030 	/*
1031 	 * Allow interrupts now that we are completely setup.
1032 	 */
1033 	error = ahc_pci_map_int(ahc);
1034 	if (error != 0)
1035 		return (error);
1036 
1037 	ahc_lock(ahc);
1038 	/*
1039 	 * Link this softc in with all other ahc instances.
1040 	 */
1041 	ahc_softc_insert(ahc);
1042 	ahc_unlock(ahc);
1043 	return (0);
1044 }
1045 
1046 /*
1047  * Test for the presence of external sram in an
1048  * "unshared" configuration.
1049  */
1050 static int
1051 ahc_ext_scbram_present(struct ahc_softc *ahc)
1052 {
1053 	u_int chip;
1054 	int ramps;
1055 	int single_user;
1056 	uint32_t devconfig;
1057 
1058 	chip = ahc->chip & AHC_CHIPID_MASK;
1059 	devconfig = aic_pci_read_config(ahc->dev_softc,
1060 					DEVCONFIG, /*bytes*/4);
1061 	single_user = (devconfig & MPORTMODE) != 0;
1062 
1063 	if ((ahc->features & AHC_ULTRA2) != 0)
1064 		ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
1065 	else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1066 		/*
1067 		 * External SCBRAM arbitration is flakey
1068 		 * on these chips.  Unfortunately this means
1069 		 * we don't use the extra SCB ram space on the
1070 		 * 3940AUW.
1071 		 */
1072 		ramps = 0;
1073 	else if (chip >= AHC_AIC7870)
1074 		ramps = (devconfig & RAMPSM) != 0;
1075 	else
1076 		ramps = 0;
1077 
1078 	if (ramps && single_user)
1079 		return (1);
1080 	return (0);
1081 }
1082 
1083 /*
1084  * Enable external scbram.
1085  */
1086 static void
1087 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1088 		  int fast, int large)
1089 {
1090 	uint32_t devconfig;
1091 
1092 	if (ahc->features & AHC_MULTI_FUNC) {
1093 		/*
1094 		 * Set the SCB Base addr (highest address bit)
1095 		 * depending on which channel we are.
1096 		 */
1097 		ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
1098 	}
1099 
1100 	ahc->flags &= ~AHC_LSCBS_ENABLED;
1101 	if (large)
1102 		ahc->flags |= AHC_LSCBS_ENABLED;
1103 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1104 	if ((ahc->features & AHC_ULTRA2) != 0) {
1105 		u_int dscommand0;
1106 
1107 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1108 		if (enable)
1109 			dscommand0 &= ~INTSCBRAMSEL;
1110 		else
1111 			dscommand0 |= INTSCBRAMSEL;
1112 		if (large)
1113 			dscommand0 &= ~USCBSIZE32;
1114 		else
1115 			dscommand0 |= USCBSIZE32;
1116 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
1117 	} else {
1118 		if (fast)
1119 			devconfig &= ~EXTSCBTIME;
1120 		else
1121 			devconfig |= EXTSCBTIME;
1122 		if (enable)
1123 			devconfig &= ~SCBRAMSEL;
1124 		else
1125 			devconfig |= SCBRAMSEL;
1126 		if (large)
1127 			devconfig &= ~SCBSIZE32;
1128 		else
1129 			devconfig |= SCBSIZE32;
1130 	}
1131 	if (pcheck)
1132 		devconfig |= EXTSCBPEN;
1133 	else
1134 		devconfig &= ~EXTSCBPEN;
1135 
1136 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1137 }
1138 
1139 /*
1140  * Take a look to see if we have external SRAM.
1141  * We currently do not attempt to use SRAM that is
1142  * shared among multiple controllers.
1143  */
1144 static void
1145 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1146 {
1147 	int num_scbs;
1148 	int test_num_scbs;
1149 	int enable;
1150 	int pcheck;
1151 	int fast;
1152 	int large;
1153 
1154 	enable = FALSE;
1155 	pcheck = FALSE;
1156 	fast = FALSE;
1157 	large = FALSE;
1158 	num_scbs = 0;
1159 
1160 	if (ahc_ext_scbram_present(ahc) == 0)
1161 		goto done;
1162 
1163 	/*
1164 	 * Probe for the best parameters to use.
1165 	 */
1166 	ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1167 	num_scbs = ahc_probe_scbs(ahc);
1168 	if (num_scbs == 0) {
1169 		/* The SRAM wasn't really present. */
1170 		goto done;
1171 	}
1172 	enable = TRUE;
1173 
1174 	/*
1175 	 * Clear any outstanding parity error
1176 	 * and ensure that parity error reporting
1177 	 * is enabled.
1178 	 */
1179 	ahc_outb(ahc, SEQCTL, 0);
1180 	ahc_outb(ahc, CLRINT, CLRPARERR);
1181 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1182 
1183 	/* Now see if we can do parity */
1184 	ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1185 	num_scbs = ahc_probe_scbs(ahc);
1186 	if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1187 	 || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1188 		pcheck = TRUE;
1189 
1190 	/* Clear any resulting parity error */
1191 	ahc_outb(ahc, CLRINT, CLRPARERR);
1192 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1193 
1194 	/* Now see if we can do fast timing */
1195 	ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1196 	test_num_scbs = ahc_probe_scbs(ahc);
1197 	if (test_num_scbs == num_scbs
1198 	 && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1199 	  || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1200 		fast = TRUE;
1201 
1202 	/*
1203 	 * See if we can use large SCBs and still maintain
1204 	 * the same overall count of SCBs.
1205 	 */
1206 	if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1207 		ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1208 		test_num_scbs = ahc_probe_scbs(ahc);
1209 		if (test_num_scbs >= num_scbs) {
1210 			large = TRUE;
1211 			num_scbs = test_num_scbs;
1212 	 		if (num_scbs >= 64) {
1213 				/*
1214 				 * We have enough space to move the
1215 				 * "busy targets table" into SCB space
1216 				 * and make it qualify all the way to the
1217 				 * lun level.
1218 				 */
1219 				ahc->flags |= AHC_SCB_BTT;
1220 			}
1221 		}
1222 	}
1223 done:
1224 	/*
1225 	 * Disable parity error reporting until we
1226 	 * can load instruction ram.
1227 	 */
1228 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1229 	/* Clear any latched parity error */
1230 	ahc_outb(ahc, CLRINT, CLRPARERR);
1231 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1232 	if (bootverbose && enable) {
1233 		printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1234 		       ahc_name(ahc), fast ? "fast" : "slow",
1235 		       pcheck ? ", parity checking enabled" : "",
1236 		       large ? 64 : 32);
1237 	}
1238 	ahc_scbram_config(ahc, enable, pcheck, fast, large);
1239 }
1240 
1241 /*
1242  * Perform some simple tests that should catch situations where
1243  * our registers are invalidly mapped.
1244  */
1245 int
1246 ahc_pci_test_register_access(struct ahc_softc *ahc)
1247 {
1248 	int	 error;
1249 	u_int	 status1;
1250 	uint32_t cmd;
1251 	uint8_t	 hcntrl;
1252 
1253 	error = EIO;
1254 
1255 	/*
1256 	 * Enable PCI error interrupt status, but suppress NMIs
1257 	 * generated by SERR raised due to target aborts.
1258 	 */
1259 	cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1260 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1261 			     cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1262 
1263 	/*
1264 	 * First a simple test to see if any
1265 	 * registers can be read.  Reading
1266 	 * HCNTRL has no side effects and has
1267 	 * at least one bit that is guaranteed to
1268 	 * be zero so it is a good register to
1269 	 * use for this test.
1270 	 */
1271 	hcntrl = ahc_inb(ahc, HCNTRL);
1272 
1273 	if (hcntrl == 0xFF)
1274 		goto fail;
1275 
1276 	if ((hcntrl & CHIPRST) != 0) {
1277 		/*
1278 		 * The chip has not been initialized since
1279 		 * PCI/EISA/VLB bus reset.  Don't trust
1280 		 * "left over BIOS data".
1281 		 */
1282 		ahc->flags |= AHC_NO_BIOS_INIT;
1283 	}
1284 
1285 	/*
1286 	 * Next create a situation where write combining
1287 	 * or read prefetching could be initiated by the
1288 	 * CPU or host bridge.  Our device does not support
1289 	 * either, so look for data corruption and/or flagged
1290 	 * PCI errors.  First pause without causing another
1291 	 * chip reset.
1292 	 */
1293 	hcntrl &= ~CHIPRST;
1294 	ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1295 	while (ahc_is_paused(ahc) == 0)
1296 		;
1297 
1298 	/* Clear any PCI errors that occurred before our driver attached. */
1299 	status1 = aic_pci_read_config(ahc->dev_softc,
1300 				      PCIR_STATUS + 1, /*bytes*/1);
1301 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1302 			     status1, /*bytes*/1);
1303 	ahc_outb(ahc, CLRINT, CLRPARERR);
1304 
1305 	ahc_outb(ahc, SEQCTL, PERRORDIS);
1306 	ahc_outb(ahc, SCBPTR, 0);
1307 	ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1308 	if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1309 		goto fail;
1310 
1311 	status1 = aic_pci_read_config(ahc->dev_softc,
1312 				      PCIR_STATUS + 1, /*bytes*/1);
1313 	if ((status1 & STA) != 0)
1314 		goto fail;
1315 
1316 	error = 0;
1317 
1318 fail:
1319 	/* Silently clear any latched errors. */
1320 	status1 = aic_pci_read_config(ahc->dev_softc,
1321 				      PCIR_STATUS + 1, /*bytes*/1);
1322 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1323 			     status1, /*bytes*/1);
1324 	ahc_outb(ahc, CLRINT, CLRPARERR);
1325 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1326 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1327 	return (error);
1328 }
1329 
1330 /*
1331  * Check the external port logic for a serial eeprom
1332  * and termination/cable detection contrls.
1333  */
1334 static void
1335 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1336 {
1337 	struct	seeprom_descriptor sd;
1338 	struct	seeprom_config *sc;
1339 	int	have_seeprom;
1340 	int	have_autoterm;
1341 
1342 	sd.sd_ahc = ahc;
1343 	sd.sd_control_offset = SEECTL;
1344 	sd.sd_status_offset = SEECTL;
1345 	sd.sd_dataout_offset = SEECTL;
1346 	sc = ahc->seep_config;
1347 
1348 	/*
1349 	 * For some multi-channel devices, the c46 is simply too
1350 	 * small to work.  For the other controller types, we can
1351 	 * get our information from either SEEPROM type.  Set the
1352 	 * type to start our probe with accordingly.
1353 	 */
1354 	if (ahc->flags & AHC_LARGE_SEEPROM)
1355 		sd.sd_chip = C56_66;
1356 	else
1357 		sd.sd_chip = C46;
1358 
1359 	sd.sd_MS = SEEMS;
1360 	sd.sd_RDY = SEERDY;
1361 	sd.sd_CS = SEECS;
1362 	sd.sd_CK = SEECK;
1363 	sd.sd_DO = SEEDO;
1364 	sd.sd_DI = SEEDI;
1365 
1366 	have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1367 	if (have_seeprom) {
1368 		if (bootverbose)
1369 			printf("%s: Reading SEEPROM...", ahc_name(ahc));
1370 
1371 		for (;;) {
1372 			u_int start_addr;
1373 
1374 			start_addr = 32 * (ahc->channel - 'A');
1375 
1376 			have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1377 							start_addr,
1378 							sizeof(*sc)/2);
1379 
1380 			if (have_seeprom)
1381 				have_seeprom = ahc_verify_cksum(sc);
1382 
1383 			if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1384 				if (bootverbose) {
1385 					if (have_seeprom == 0)
1386 						printf ("checksum error\n");
1387 					else
1388 						printf ("done.\n");
1389 				}
1390 				break;
1391 			}
1392 			sd.sd_chip = C56_66;
1393 		}
1394 		ahc_release_seeprom(&sd);
1395 
1396 		/* Remember the SEEPROM type for later */
1397 		if (sd.sd_chip == C56_66)
1398 			ahc->flags |= AHC_LARGE_SEEPROM;
1399 	}
1400 
1401 	if (!have_seeprom) {
1402 		/*
1403 		 * Pull scratch ram settings and treat them as
1404 		 * if they are the contents of an seeprom if
1405 		 * the 'ADPT' signature is found in SCB2.
1406 		 * We manually compose the data as 16bit values
1407 		 * to avoid endian issues.
1408 		 */
1409 		ahc_outb(ahc, SCBPTR, 2);
1410 		if (ahc_inb(ahc, SCB_BASE) == 'A'
1411 		 && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1412 		 && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1413 		 && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1414 			uint16_t *sc_data;
1415 			int	  i;
1416 
1417 			sc_data = (uint16_t *)sc;
1418 			for (i = 0; i < 32; i++, sc_data++) {
1419 				int	j;
1420 
1421 				j = i * 2;
1422 				*sc_data = ahc_inb(ahc, SRAM_BASE + j)
1423 					 | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1424 			}
1425 			have_seeprom = ahc_verify_cksum(sc);
1426 			if (have_seeprom)
1427 				ahc->flags |= AHC_SCB_CONFIG_USED;
1428 		}
1429 		/*
1430 		 * Clear any SCB parity errors in case this data and
1431 		 * its associated parity was not initialized by the BIOS
1432 		 */
1433 		ahc_outb(ahc, CLRINT, CLRPARERR);
1434 		ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1435 	}
1436 
1437 	if (!have_seeprom) {
1438 		if (bootverbose)
1439 			printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1440 		ahc->flags |= AHC_USEDEFAULTS;
1441 		free(ahc->seep_config, M_DEVBUF);
1442 		ahc->seep_config = NULL;
1443 		sc = NULL;
1444 	} else {
1445 		ahc_parse_pci_eeprom(ahc, sc);
1446 	}
1447 
1448 	/*
1449 	 * Cards that have the external logic necessary to talk to
1450 	 * a SEEPROM, are almost certain to have the remaining logic
1451 	 * necessary for auto-termination control.  This assumption
1452 	 * hasn't failed yet...
1453 	 */
1454 	have_autoterm = have_seeprom;
1455 
1456 	/*
1457 	 * Some low-cost chips have SEEPROM and auto-term control built
1458 	 * in, instead of using a GAL.  They can tell us directly
1459 	 * if the termination logic is enabled.
1460 	 */
1461 	if ((ahc->features & AHC_SPIOCAP) != 0) {
1462 		if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1463 			have_autoterm = FALSE;
1464 	}
1465 
1466 	if (have_autoterm) {
1467 		ahc->flags |= AHC_HAS_TERM_LOGIC;
1468 		ahc_acquire_seeprom(ahc, &sd);
1469 		configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1470 		ahc_release_seeprom(&sd);
1471 	} else if (have_seeprom) {
1472 		*sxfrctl1 &= ~STPWEN;
1473 		if ((sc->adapter_control & CFSTERM) != 0)
1474 			*sxfrctl1 |= STPWEN;
1475 		if (bootverbose)
1476 			printf("%s: Low byte termination %sabled\n",
1477 			       ahc_name(ahc),
1478 			       (*sxfrctl1 & STPWEN) ? "en" : "dis");
1479 	}
1480 }
1481 
1482 static void
1483 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1484 {
1485 	/*
1486 	 * Put the data we've collected down into SRAM
1487 	 * where ahc_init will find it.
1488 	 */
1489 	int	 i;
1490 	int	 max_targ = sc->max_targets & CFMAXTARG;
1491 	u_int	 scsi_conf;
1492 	uint16_t discenable;
1493 	uint16_t ultraenb;
1494 
1495 	discenable = 0;
1496 	ultraenb = 0;
1497 	if ((sc->adapter_control & CFULTRAEN) != 0) {
1498 		/*
1499 		 * Determine if this adapter has a "newstyle"
1500 		 * SEEPROM format.
1501 		 */
1502 		for (i = 0; i < max_targ; i++) {
1503 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1504 				ahc->flags |= AHC_NEWEEPROM_FMT;
1505 				break;
1506 			}
1507 		}
1508 	}
1509 
1510 	for (i = 0; i < max_targ; i++) {
1511 		u_int     scsirate;
1512 		uint16_t target_mask;
1513 
1514 		target_mask = 0x01 << i;
1515 		if (sc->device_flags[i] & CFDISC)
1516 			discenable |= target_mask;
1517 		if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1518 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1519 				ultraenb |= target_mask;
1520 		} else if ((sc->adapter_control & CFULTRAEN) != 0) {
1521 			ultraenb |= target_mask;
1522 		}
1523 		if ((sc->device_flags[i] & CFXFER) == 0x04
1524 		 && (ultraenb & target_mask) != 0) {
1525 			/* Treat 10MHz as a non-ultra speed */
1526 			sc->device_flags[i] &= ~CFXFER;
1527 		 	ultraenb &= ~target_mask;
1528 		}
1529 		if ((ahc->features & AHC_ULTRA2) != 0) {
1530 			u_int offset;
1531 
1532 			if (sc->device_flags[i] & CFSYNCH)
1533 				offset = MAX_OFFSET_ULTRA2;
1534 			else
1535 				offset = 0;
1536 			ahc_outb(ahc, TARG_OFFSET + i, offset);
1537 
1538 			/*
1539 			 * The ultra enable bits contain the
1540 			 * high bit of the ultra2 sync rate
1541 			 * field.
1542 			 */
1543 			scsirate = (sc->device_flags[i] & CFXFER)
1544 				 | ((ultraenb & target_mask) ? 0x8 : 0x0);
1545 			if (sc->device_flags[i] & CFWIDEB)
1546 				scsirate |= WIDEXFER;
1547 		} else {
1548 			scsirate = (sc->device_flags[i] & CFXFER) << 4;
1549 			if (sc->device_flags[i] & CFSYNCH)
1550 				scsirate |= SOFS;
1551 			if (sc->device_flags[i] & CFWIDEB)
1552 				scsirate |= WIDEXFER;
1553 		}
1554 		ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1555 	}
1556 	ahc->our_id = sc->brtime_id & CFSCSIID;
1557 
1558 	scsi_conf = (ahc->our_id & 0x7);
1559 	if (sc->adapter_control & CFSPARITY)
1560 		scsi_conf |= ENSPCHK;
1561 	if (sc->adapter_control & CFRESETB)
1562 		scsi_conf |= RESET_SCSI;
1563 
1564 	ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1565 
1566 	if (sc->bios_control & CFEXTEND)
1567 		ahc->flags |= AHC_EXTENDED_TRANS_A;
1568 
1569 	if (sc->bios_control & CFBIOSEN)
1570 		ahc->flags |= AHC_BIOS_ENABLED;
1571 	if (ahc->features & AHC_ULTRA
1572 	 && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1573 		/* Should we enable Ultra mode? */
1574 		if (!(sc->adapter_control & CFULTRAEN))
1575 			/* Treat us as a non-ultra card */
1576 			ultraenb = 0;
1577 	}
1578 
1579 	if (sc->signature == CFSIGNATURE
1580 	 || sc->signature == CFSIGNATURE2) {
1581 		uint32_t devconfig;
1582 
1583 		/* Honor the STPWLEVEL settings */
1584 		devconfig = aic_pci_read_config(ahc->dev_softc,
1585 						DEVCONFIG, /*bytes*/4);
1586 		devconfig &= ~STPWLEVEL;
1587 		if ((sc->bios_control & CFSTPWLEVEL) != 0)
1588 			devconfig |= STPWLEVEL;
1589 		aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
1590 				     devconfig, /*bytes*/4);
1591 	}
1592 	/* Set SCSICONF info */
1593 	ahc_outb(ahc, SCSICONF, scsi_conf);
1594 	ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1595 	ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1596 	ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1597 	ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1598 }
1599 
1600 static void
1601 configure_termination(struct ahc_softc *ahc,
1602 		      struct seeprom_descriptor *sd,
1603 		      u_int adapter_control,
1604 		      u_int *sxfrctl1)
1605 {
1606 	uint8_t brddat;
1607 
1608 	brddat = 0;
1609 
1610 	/*
1611 	 * Update the settings in sxfrctl1 to match the
1612 	 * termination settings
1613 	 */
1614 	*sxfrctl1 = 0;
1615 
1616 	/*
1617 	 * SEECS must be on for the GALS to latch
1618 	 * the data properly.  Be sure to leave MS
1619 	 * on or we will release the seeprom.
1620 	 */
1621 	SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1622 	if ((adapter_control & CFAUTOTERM) != 0
1623 	 || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1624 		int internal50_present;
1625 		int internal68_present;
1626 		int externalcable_present;
1627 		int eeprom_present;
1628 		int enableSEC_low;
1629 		int enableSEC_high;
1630 		int enablePRI_low;
1631 		int enablePRI_high;
1632 		int sum;
1633 
1634 		enableSEC_low = 0;
1635 		enableSEC_high = 0;
1636 		enablePRI_low = 0;
1637 		enablePRI_high = 0;
1638 		if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1639 			ahc_new_term_detect(ahc, &enableSEC_low,
1640 					    &enableSEC_high,
1641 					    &enablePRI_low,
1642 					    &enablePRI_high,
1643 					    &eeprom_present);
1644 			if ((adapter_control & CFSEAUTOTERM) == 0) {
1645 				if (bootverbose)
1646 					printf("%s: Manual SE Termination\n",
1647 					       ahc_name(ahc));
1648 				enableSEC_low = (adapter_control & CFSELOWTERM);
1649 				enableSEC_high =
1650 				    (adapter_control & CFSEHIGHTERM);
1651 			}
1652 			if ((adapter_control & CFAUTOTERM) == 0) {
1653 				if (bootverbose)
1654 					printf("%s: Manual LVD Termination\n",
1655 					       ahc_name(ahc));
1656 				enablePRI_low = (adapter_control & CFSTERM);
1657 				enablePRI_high = (adapter_control & CFWSTERM);
1658 			}
1659 			/* Make the table calculations below happy */
1660 			internal50_present = 0;
1661 			internal68_present = 1;
1662 			externalcable_present = 1;
1663 		} else if ((ahc->features & AHC_SPIOCAP) != 0) {
1664 			aic785X_cable_detect(ahc, &internal50_present,
1665 					     &externalcable_present,
1666 					     &eeprom_present);
1667 			/* Can never support a wide connector. */
1668 			internal68_present = 0;
1669 		} else {
1670 			aic787X_cable_detect(ahc, &internal50_present,
1671 					     &internal68_present,
1672 					     &externalcable_present,
1673 					     &eeprom_present);
1674 		}
1675 
1676 		if ((ahc->features & AHC_WIDE) == 0)
1677 			internal68_present = 0;
1678 
1679 		if (bootverbose
1680 		 && (ahc->features & AHC_ULTRA2) == 0) {
1681 			printf("%s: internal 50 cable %s present",
1682 			       ahc_name(ahc),
1683 			       internal50_present ? "is":"not");
1684 
1685 			if ((ahc->features & AHC_WIDE) != 0)
1686 				printf(", internal 68 cable %s present",
1687 				       internal68_present ? "is":"not");
1688 			printf("\n%s: external cable %s present\n",
1689 			       ahc_name(ahc),
1690 			       externalcable_present ? "is":"not");
1691 		}
1692 		if (bootverbose)
1693 			printf("%s: BIOS eeprom %s present\n",
1694 			       ahc_name(ahc), eeprom_present ? "is" : "not");
1695 
1696 		if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1697 			/*
1698 			 * The 50 pin connector is a separate bus,
1699 			 * so force it to always be terminated.
1700 			 * In the future, perform current sensing
1701 			 * to determine if we are in the middle of
1702 			 * a properly terminated bus.
1703 			 */
1704 			internal50_present = 0;
1705 		}
1706 
1707 		/*
1708 		 * Now set the termination based on what
1709 		 * we found.
1710 		 * Flash Enable = BRDDAT7
1711 		 * Secondary High Term Enable = BRDDAT6
1712 		 * Secondary Low Term Enable = BRDDAT5 (7890)
1713 		 * Primary High Term Enable = BRDDAT4 (7890)
1714 		 */
1715 		if ((ahc->features & AHC_ULTRA2) == 0
1716 		 && (internal50_present != 0)
1717 		 && (internal68_present != 0)
1718 		 && (externalcable_present != 0)) {
1719 			printf("%s: Illegal cable configuration!!. "
1720 			       "Only two connectors on the "
1721 			       "adapter may be used at a "
1722 			       "time!\n", ahc_name(ahc));
1723 
1724 			/*
1725 			 * Pretend there are no cables in the hope
1726 			 * that having all of the termination on
1727 			 * gives us a more stable bus.
1728 			 */
1729 		 	internal50_present = 0;
1730 			internal68_present = 0;
1731 			externalcable_present = 0;
1732 		}
1733 
1734 		if ((ahc->features & AHC_WIDE) != 0
1735 		 && ((externalcable_present == 0)
1736 		  || (internal68_present == 0)
1737 		  || (enableSEC_high != 0))) {
1738 			brddat |= BRDDAT6;
1739 			if (bootverbose) {
1740 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1741 					printf("%s: 68 pin termination "
1742 					       "Enabled\n", ahc_name(ahc));
1743 				else
1744 					printf("%s: %sHigh byte termination "
1745 					       "Enabled\n", ahc_name(ahc),
1746 					       enableSEC_high ? "Secondary "
1747 							      : "");
1748 			}
1749 		}
1750 
1751 		sum = internal50_present + internal68_present
1752 		    + externalcable_present;
1753 		if (sum < 2 || (enableSEC_low != 0)) {
1754 			if ((ahc->features & AHC_ULTRA2) != 0)
1755 				brddat |= BRDDAT5;
1756 			else
1757 				*sxfrctl1 |= STPWEN;
1758 			if (bootverbose) {
1759 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1760 					printf("%s: 50 pin termination "
1761 					       "Enabled\n", ahc_name(ahc));
1762 				else
1763 					printf("%s: %sLow byte termination "
1764 					       "Enabled\n", ahc_name(ahc),
1765 					       enableSEC_low ? "Secondary "
1766 							     : "");
1767 			}
1768 		}
1769 
1770 		if (enablePRI_low != 0) {
1771 			*sxfrctl1 |= STPWEN;
1772 			if (bootverbose)
1773 				printf("%s: Primary Low Byte termination "
1774 				       "Enabled\n", ahc_name(ahc));
1775 		}
1776 
1777 		/*
1778 		 * Setup STPWEN before setting up the rest of
1779 		 * the termination per the tech note on the U160 cards.
1780 		 */
1781 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1782 
1783 		if (enablePRI_high != 0) {
1784 			brddat |= BRDDAT4;
1785 			if (bootverbose)
1786 				printf("%s: Primary High Byte "
1787 				       "termination Enabled\n",
1788 				       ahc_name(ahc));
1789 		}
1790 
1791 		write_brdctl(ahc, brddat);
1792 
1793 	} else {
1794 		if ((adapter_control & CFSTERM) != 0) {
1795 			*sxfrctl1 |= STPWEN;
1796 
1797 			if (bootverbose)
1798 				printf("%s: %sLow byte termination Enabled\n",
1799 				       ahc_name(ahc),
1800 				       (ahc->features & AHC_ULTRA2) ? "Primary "
1801 								    : "");
1802 		}
1803 
1804 		if ((adapter_control & CFWSTERM) != 0
1805 		 && (ahc->features & AHC_WIDE) != 0) {
1806 			brddat |= BRDDAT6;
1807 			if (bootverbose)
1808 				printf("%s: %sHigh byte termination Enabled\n",
1809 				       ahc_name(ahc),
1810 				       (ahc->features & AHC_ULTRA2)
1811 				     ? "Secondary " : "");
1812 		}
1813 
1814 		/*
1815 		 * Setup STPWEN before setting up the rest of
1816 		 * the termination per the tech note on the U160 cards.
1817 		 */
1818 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1819 
1820 		if ((ahc->features & AHC_WIDE) != 0)
1821 			write_brdctl(ahc, brddat);
1822 	}
1823 	SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1824 }
1825 
1826 static void
1827 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1828 		    int *enableSEC_high, int *enablePRI_low,
1829 		    int *enablePRI_high, int *eeprom_present)
1830 {
1831 	uint8_t brdctl;
1832 
1833 	/*
1834 	 * BRDDAT7 = Eeprom
1835 	 * BRDDAT6 = Enable Secondary High Byte termination
1836 	 * BRDDAT5 = Enable Secondary Low Byte termination
1837 	 * BRDDAT4 = Enable Primary high byte termination
1838 	 * BRDDAT3 = Enable Primary low byte termination
1839 	 */
1840 	brdctl = read_brdctl(ahc);
1841 	*eeprom_present = brdctl & BRDDAT7;
1842 	*enableSEC_high = (brdctl & BRDDAT6);
1843 	*enableSEC_low = (brdctl & BRDDAT5);
1844 	*enablePRI_high = (brdctl & BRDDAT4);
1845 	*enablePRI_low = (brdctl & BRDDAT3);
1846 }
1847 
1848 static void
1849 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1850 		     int *internal68_present, int *externalcable_present,
1851 		     int *eeprom_present)
1852 {
1853 	uint8_t brdctl;
1854 
1855 	/*
1856 	 * First read the status of our cables.
1857 	 * Set the rom bank to 0 since the
1858 	 * bank setting serves as a multiplexor
1859 	 * for the cable detection logic.
1860 	 * BRDDAT5 controls the bank switch.
1861 	 */
1862 	write_brdctl(ahc, 0);
1863 
1864 	/*
1865 	 * Now read the state of the internal
1866 	 * connectors.  BRDDAT6 is INT50 and
1867 	 * BRDDAT7 is INT68.
1868 	 */
1869 	brdctl = read_brdctl(ahc);
1870 	*internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1871 	*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1872 
1873 	/*
1874 	 * Set the rom bank to 1 and determine
1875 	 * the other signals.
1876 	 */
1877 	write_brdctl(ahc, BRDDAT5);
1878 
1879 	/*
1880 	 * Now read the state of the external
1881 	 * connectors.  BRDDAT6 is EXT68 and
1882 	 * BRDDAT7 is EPROMPS.
1883 	 */
1884 	brdctl = read_brdctl(ahc);
1885 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1886 	*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1887 }
1888 
1889 static void
1890 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1891 		     int *externalcable_present, int *eeprom_present)
1892 {
1893 	uint8_t brdctl;
1894 	uint8_t spiocap;
1895 
1896 	spiocap = ahc_inb(ahc, SPIOCAP);
1897 	spiocap &= ~SOFTCMDEN;
1898 	spiocap |= EXT_BRDCTL;
1899 	ahc_outb(ahc, SPIOCAP, spiocap);
1900 	ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1901 	ahc_flush_device_writes(ahc);
1902 	aic_delay(500);
1903 	ahc_outb(ahc, BRDCTL, 0);
1904 	ahc_flush_device_writes(ahc);
1905 	aic_delay(500);
1906 	brdctl = ahc_inb(ahc, BRDCTL);
1907 	*internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1908 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1909 	*eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1910 }
1911 
1912 int
1913 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1914 {
1915 	int wait;
1916 
1917 	if ((ahc->features & AHC_SPIOCAP) != 0
1918 	 && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1919 		return (0);
1920 
1921 	/*
1922 	 * Request access of the memory port.  When access is
1923 	 * granted, SEERDY will go high.  We use a 1 second
1924 	 * timeout which should be near 1 second more than
1925 	 * is needed.  Reason: after the chip reset, there
1926 	 * should be no contention.
1927 	 */
1928 	SEEPROM_OUTB(sd, sd->sd_MS);
1929 	wait = 1000;  /* 1 second timeout in msec */
1930 	while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1931 		aic_delay(1000);  /* delay 1 msec */
1932 	}
1933 	if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1934 		SEEPROM_OUTB(sd, 0);
1935 		return (0);
1936 	}
1937 	return(1);
1938 }
1939 
1940 void
1941 ahc_release_seeprom(struct seeprom_descriptor *sd)
1942 {
1943 	/* Release access to the memory port and the serial EEPROM. */
1944 	SEEPROM_OUTB(sd, 0);
1945 }
1946 
1947 static void
1948 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1949 {
1950 	uint8_t brdctl;
1951 
1952 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1953 		brdctl = BRDSTB;
1954 	 	if (ahc->channel == 'B')
1955 			brdctl |= BRDCS;
1956 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1957 		brdctl = 0;
1958 	} else {
1959 		brdctl = BRDSTB|BRDCS;
1960 	}
1961 	ahc_outb(ahc, BRDCTL, brdctl);
1962 	ahc_flush_device_writes(ahc);
1963 	brdctl |= value;
1964 	ahc_outb(ahc, BRDCTL, brdctl);
1965 	ahc_flush_device_writes(ahc);
1966 	if ((ahc->features & AHC_ULTRA2) != 0)
1967 		brdctl |= BRDSTB_ULTRA2;
1968 	else
1969 		brdctl &= ~BRDSTB;
1970 	ahc_outb(ahc, BRDCTL, brdctl);
1971 	ahc_flush_device_writes(ahc);
1972 	if ((ahc->features & AHC_ULTRA2) != 0)
1973 		brdctl = 0;
1974 	else
1975 		brdctl &= ~BRDCS;
1976 	ahc_outb(ahc, BRDCTL, brdctl);
1977 }
1978 
1979 static uint8_t
1980 read_brdctl(struct ahc_softc *ahc)
1981 {
1982 	uint8_t brdctl;
1983 	uint8_t value;
1984 
1985 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1986 		brdctl = BRDRW;
1987 	 	if (ahc->channel == 'B')
1988 			brdctl |= BRDCS;
1989 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1990 		brdctl = BRDRW_ULTRA2;
1991 	} else {
1992 		brdctl = BRDRW|BRDCS;
1993 	}
1994 	ahc_outb(ahc, BRDCTL, brdctl);
1995 	ahc_flush_device_writes(ahc);
1996 	value = ahc_inb(ahc, BRDCTL);
1997 	ahc_outb(ahc, BRDCTL, 0);
1998 	return (value);
1999 }
2000 
2001 static void
2002 ahc_pci_intr(struct ahc_softc *ahc)
2003 {
2004 	u_int error;
2005 	u_int status1;
2006 
2007 	error = ahc_inb(ahc, ERROR);
2008 	if ((error & PCIERRSTAT) == 0)
2009 		return;
2010 
2011 	status1 = aic_pci_read_config(ahc->dev_softc,
2012 				      PCIR_STATUS + 1, /*bytes*/1);
2013 
2014 	if ((status1 & ~DPE) != 0
2015 	 || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2016 		printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
2017 		       ahc_name(ahc),
2018 		       ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
2019 	}
2020 
2021 	if (status1 & DPE
2022 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2023 		ahc->pci_target_perr_count++;
2024 		printf("%s: Data Parity Error Detected during address "
2025 		       "or write data phase\n", ahc_name(ahc));
2026 	}
2027 	if (status1 & SSE) {
2028 		printf("%s: Signal System Error Detected\n", ahc_name(ahc));
2029 	}
2030 	if (status1 & RMA) {
2031 		printf("%s: Received a Master Abort\n", ahc_name(ahc));
2032 	}
2033 	if (status1 & RTA) {
2034 		printf("%s: Received a Target Abort\n", ahc_name(ahc));
2035 	}
2036 	if (status1 & STA) {
2037 		printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
2038 	}
2039 	if (status1 & DPR) {
2040 		printf("%s: Data Parity Error has been reported via PERR#\n",
2041 		       ahc_name(ahc));
2042 	}
2043 
2044 	/* Clear latched errors. */
2045 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
2046 			     status1, /*bytes*/1);
2047 
2048 	if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
2049 		printf("%s: Latched PCIERR interrupt with "
2050 		       "no status bits set\n", ahc_name(ahc));
2051 	} else {
2052 		ahc_outb(ahc, CLRINT, CLRPARERR);
2053 	}
2054 
2055 	if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
2056 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2057 		printf(
2058 "%s: WARNING WARNING WARNING WARNING\n"
2059 "%s: Too many PCI parity errors observed as a target.\n"
2060 "%s: Some device on this PCI bus is generating bad parity.\n"
2061 "%s: This is an error *observed by*, not *generated by*, %s.\n"
2062 "%s: PCI parity error checking has been disabled.\n"
2063 "%s: WARNING WARNING WARNING WARNING\n",
2064 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2065 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2066 		       ahc_name(ahc));
2067 		ahc->seqctl |= FAILDIS;
2068 		ahc->flags |= AHC_DISABLE_PCI_PERR;
2069 		ahc_outb(ahc, SEQCTL, ahc->seqctl);
2070 	}
2071 	ahc_unpause(ahc);
2072 }
2073 
2074 static int
2075 ahc_pci_chip_init(struct ahc_softc *ahc)
2076 {
2077 	ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2078 	ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2079 	if ((ahc->features & AHC_DT) != 0) {
2080 		u_int sfunct;
2081 
2082 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2083 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2084 		ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2085 		ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2086 		ahc_outb(ahc, SFUNCT, sfunct);
2087 		ahc_outb(ahc, CRCCONTROL1,
2088 			 ahc->bus_softc.pci_softc.crccontrol1);
2089 	}
2090 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
2091 		ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2092 
2093 	if ((ahc->features & AHC_ULTRA2) != 0)
2094 		ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2095 
2096 	return (ahc_chip_init(ahc));
2097 }
2098 
2099 static int
2100 ahc_pci_suspend(struct ahc_softc *ahc)
2101 {
2102 	return (ahc_suspend(ahc));
2103 }
2104 
2105 static int
2106 ahc_pci_resume(struct ahc_softc *ahc)
2107 {
2108 
2109 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
2110 
2111 	/*
2112 	 * We assume that the OS has restored our register
2113 	 * mappings, etc.  Just update the config space registers
2114 	 * that the OS doesn't know about and rely on our chip
2115 	 * reset handler to handle the rest.
2116 	 */
2117 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
2118 			     ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2119 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2120 			     ahc->bus_softc.pci_softc.command, /*bytes*/1);
2121 	aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2122 			     ahc->bus_softc.pci_softc.csize_lattime,
2123 			     /*bytes*/1);
2124 	if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2125 		struct	seeprom_descriptor sd;
2126 		u_int	sxfrctl1;
2127 
2128 		sd.sd_ahc = ahc;
2129 		sd.sd_control_offset = SEECTL;
2130 		sd.sd_status_offset = SEECTL;
2131 		sd.sd_dataout_offset = SEECTL;
2132 
2133 		ahc_acquire_seeprom(ahc, &sd);
2134 		configure_termination(ahc, &sd,
2135 				      ahc->seep_config->adapter_control,
2136 				      &sxfrctl1);
2137 		ahc_release_seeprom(&sd);
2138 	}
2139 	return (ahc_resume(ahc));
2140 }
2141 
2142 static int
2143 ahc_aic785X_setup(struct ahc_softc *ahc)
2144 {
2145 	aic_dev_softc_t pci;
2146 	uint8_t rev;
2147 
2148 	pci = ahc->dev_softc;
2149 	ahc->channel = 'A';
2150 	ahc->chip = AHC_AIC7850;
2151 	ahc->features = AHC_AIC7850_FE;
2152 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2153 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2154 	if (rev >= 1)
2155 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2156 	ahc->instruction_ram_size = 512;
2157 	return (0);
2158 }
2159 
2160 static int
2161 ahc_aic7860_setup(struct ahc_softc *ahc)
2162 {
2163 	aic_dev_softc_t pci;
2164 	uint8_t rev;
2165 
2166 	pci = ahc->dev_softc;
2167 	ahc->channel = 'A';
2168 	ahc->chip = AHC_AIC7860;
2169 	ahc->features = AHC_AIC7860_FE;
2170 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2171 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2172 	if (rev >= 1)
2173 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2174 	ahc->instruction_ram_size = 512;
2175 	return (0);
2176 }
2177 
2178 static int
2179 ahc_apa1480_setup(struct ahc_softc *ahc)
2180 {
2181 	int error;
2182 
2183 	error = ahc_aic7860_setup(ahc);
2184 	if (error != 0)
2185 		return (error);
2186 	ahc->features |= AHC_REMOVABLE;
2187 	return (0);
2188 }
2189 
2190 static int
2191 ahc_aic7870_setup(struct ahc_softc *ahc)
2192 {
2193 
2194 	ahc->channel = 'A';
2195 	ahc->chip = AHC_AIC7870;
2196 	ahc->features = AHC_AIC7870_FE;
2197 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2198 	ahc->instruction_ram_size = 512;
2199 	return (0);
2200 }
2201 
2202 static int
2203 ahc_aha394X_setup(struct ahc_softc *ahc)
2204 {
2205 	int error;
2206 
2207 	error = ahc_aic7870_setup(ahc);
2208 	if (error == 0)
2209 		error = ahc_aha394XX_setup(ahc);
2210 	return (error);
2211 }
2212 
2213 static int
2214 ahc_aha398X_setup(struct ahc_softc *ahc)
2215 {
2216 	int error;
2217 
2218 	error = ahc_aic7870_setup(ahc);
2219 	if (error == 0)
2220 		error = ahc_aha398XX_setup(ahc);
2221 	return (error);
2222 }
2223 
2224 static int
2225 ahc_aha494X_setup(struct ahc_softc *ahc)
2226 {
2227 	int error;
2228 
2229 	error = ahc_aic7870_setup(ahc);
2230 	if (error == 0)
2231 		error = ahc_aha494XX_setup(ahc);
2232 	return (error);
2233 }
2234 
2235 static int
2236 ahc_aic7880_setup(struct ahc_softc *ahc)
2237 {
2238 	aic_dev_softc_t pci;
2239 	uint8_t rev;
2240 
2241 	pci = ahc->dev_softc;
2242 	ahc->channel = 'A';
2243 	ahc->chip = AHC_AIC7880;
2244 	ahc->features = AHC_AIC7880_FE;
2245 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2246 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2247 	if (rev >= 1) {
2248 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2249 	} else {
2250 		ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2251 	}
2252 	ahc->instruction_ram_size = 512;
2253 	return (0);
2254 }
2255 
2256 static int
2257 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2258 {
2259 
2260 	ahc->flags |= AHC_INT50_SPEEDFLEX;
2261 	return (ahc_aic7880_setup(ahc));
2262 }
2263 
2264 static int
2265 ahc_aha394XU_setup(struct ahc_softc *ahc)
2266 {
2267 	int error;
2268 
2269 	error = ahc_aic7880_setup(ahc);
2270 	if (error == 0)
2271 		error = ahc_aha394XX_setup(ahc);
2272 	return (error);
2273 }
2274 
2275 static int
2276 ahc_aha398XU_setup(struct ahc_softc *ahc)
2277 {
2278 	int error;
2279 
2280 	error = ahc_aic7880_setup(ahc);
2281 	if (error == 0)
2282 		error = ahc_aha398XX_setup(ahc);
2283 	return (error);
2284 }
2285 
2286 static int
2287 ahc_aic7890_setup(struct ahc_softc *ahc)
2288 {
2289 	aic_dev_softc_t pci;
2290 	uint8_t rev;
2291 
2292 	pci = ahc->dev_softc;
2293 	ahc->channel = 'A';
2294 	ahc->chip = AHC_AIC7890;
2295 	ahc->features = AHC_AIC7890_FE;
2296 	ahc->flags |= AHC_NEWEEPROM_FMT;
2297 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2298 	if (rev == 0)
2299 		ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2300 	ahc->instruction_ram_size = 768;
2301 	return (0);
2302 }
2303 
2304 static int
2305 ahc_aic7892_setup(struct ahc_softc *ahc)
2306 {
2307 
2308 	ahc->channel = 'A';
2309 	ahc->chip = AHC_AIC7892;
2310 	ahc->features = AHC_AIC7892_FE;
2311 	ahc->flags |= AHC_NEWEEPROM_FMT;
2312 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2313 	ahc->instruction_ram_size = 1024;
2314 	return (0);
2315 }
2316 
2317 static int
2318 ahc_aic7895_setup(struct ahc_softc *ahc)
2319 {
2320 	aic_dev_softc_t pci;
2321 	uint8_t rev;
2322 
2323 	pci = ahc->dev_softc;
2324 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2325 	/*
2326 	 * The 'C' revision of the aic7895 has a few additional features.
2327 	 */
2328 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2329 	if (rev >= 4) {
2330 		ahc->chip = AHC_AIC7895C;
2331 		ahc->features = AHC_AIC7895C_FE;
2332 	} else  {
2333 		u_int command;
2334 
2335 		ahc->chip = AHC_AIC7895;
2336 		ahc->features = AHC_AIC7895_FE;
2337 
2338 		/*
2339 		 * The BIOS disables the use of MWI transactions
2340 		 * since it does not have the MWI bug work around
2341 		 * we have.  Disabling MWI reduces performance, so
2342 		 * turn it on again.
2343 		 */
2344 		command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2345 		command |= PCIM_CMD_MWRICEN;
2346 		aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2347 		ahc->bugs |= AHC_PCI_MWI_BUG;
2348 	}
2349 	/*
2350 	 * XXX Does CACHETHEN really not work???  What about PCI retry?
2351 	 * on C level chips.  Need to test, but for now, play it safe.
2352 	 */
2353 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2354 		  |  AHC_CACHETHEN_BUG;
2355 
2356 #if 0
2357 	uint32_t devconfig;
2358 
2359 	/*
2360 	 * Cachesize must also be zero due to stray DAC
2361 	 * problem when sitting behind some bridges.
2362 	 */
2363 	aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2364 	devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2365 	devconfig |= MRDCEN;
2366 	aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2367 #endif
2368 	ahc->flags |= AHC_NEWEEPROM_FMT;
2369 	ahc->instruction_ram_size = 512;
2370 	return (0);
2371 }
2372 
2373 static int
2374 ahc_aic7896_setup(struct ahc_softc *ahc)
2375 {
2376 	aic_dev_softc_t pci;
2377 
2378 	pci = ahc->dev_softc;
2379 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2380 	ahc->chip = AHC_AIC7896;
2381 	ahc->features = AHC_AIC7896_FE;
2382 	ahc->flags |= AHC_NEWEEPROM_FMT;
2383 	ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2384 	ahc->instruction_ram_size = 768;
2385 	return (0);
2386 }
2387 
2388 static int
2389 ahc_aic7899_setup(struct ahc_softc *ahc)
2390 {
2391 	aic_dev_softc_t pci;
2392 
2393 	pci = ahc->dev_softc;
2394 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2395 	ahc->chip = AHC_AIC7899;
2396 	ahc->features = AHC_AIC7899_FE;
2397 	ahc->flags |= AHC_NEWEEPROM_FMT;
2398 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2399 	ahc->instruction_ram_size = 1024;
2400 	return (0);
2401 }
2402 
2403 static int
2404 ahc_aha29160C_setup(struct ahc_softc *ahc)
2405 {
2406 	int error;
2407 
2408 	error = ahc_aic7899_setup(ahc);
2409 	if (error != 0)
2410 		return (error);
2411 	ahc->features |= AHC_REMOVABLE;
2412 	return (0);
2413 }
2414 
2415 static int
2416 ahc_raid_setup(struct ahc_softc *ahc)
2417 {
2418 	printf("RAID functionality unsupported\n");
2419 	return (ENXIO);
2420 }
2421 
2422 static int
2423 ahc_aha394XX_setup(struct ahc_softc *ahc)
2424 {
2425 	aic_dev_softc_t pci;
2426 
2427 	pci = ahc->dev_softc;
2428 	switch (aic_get_pci_slot(pci)) {
2429 	case AHC_394X_SLOT_CHANNEL_A:
2430 		ahc->channel = 'A';
2431 		break;
2432 	case AHC_394X_SLOT_CHANNEL_B:
2433 		ahc->channel = 'B';
2434 		break;
2435 	default:
2436 		printf("adapter at unexpected slot %d\n"
2437 		       "unable to map to a channel\n",
2438 		       aic_get_pci_slot(pci));
2439 		ahc->channel = 'A';
2440 	}
2441 	return (0);
2442 }
2443 
2444 static int
2445 ahc_aha398XX_setup(struct ahc_softc *ahc)
2446 {
2447 	aic_dev_softc_t pci;
2448 
2449 	pci = ahc->dev_softc;
2450 	switch (aic_get_pci_slot(pci)) {
2451 	case AHC_398X_SLOT_CHANNEL_A:
2452 		ahc->channel = 'A';
2453 		break;
2454 	case AHC_398X_SLOT_CHANNEL_B:
2455 		ahc->channel = 'B';
2456 		break;
2457 	case AHC_398X_SLOT_CHANNEL_C:
2458 		ahc->channel = 'C';
2459 		break;
2460 	default:
2461 		printf("adapter at unexpected slot %d\n"
2462 		       "unable to map to a channel\n",
2463 		       aic_get_pci_slot(pci));
2464 		ahc->channel = 'A';
2465 		break;
2466 	}
2467 	ahc->flags |= AHC_LARGE_SEEPROM;
2468 	return (0);
2469 }
2470 
2471 static int
2472 ahc_aha494XX_setup(struct ahc_softc *ahc)
2473 {
2474 	aic_dev_softc_t pci;
2475 
2476 	pci = ahc->dev_softc;
2477 	switch (aic_get_pci_slot(pci)) {
2478 	case AHC_494X_SLOT_CHANNEL_A:
2479 		ahc->channel = 'A';
2480 		break;
2481 	case AHC_494X_SLOT_CHANNEL_B:
2482 		ahc->channel = 'B';
2483 		break;
2484 	case AHC_494X_SLOT_CHANNEL_C:
2485 		ahc->channel = 'C';
2486 		break;
2487 	case AHC_494X_SLOT_CHANNEL_D:
2488 		ahc->channel = 'D';
2489 		break;
2490 	default:
2491 		printf("adapter at unexpected slot %d\n"
2492 		       "unable to map to a channel\n",
2493 		       aic_get_pci_slot(pci));
2494 		ahc->channel = 'A';
2495 	}
2496 	ahc->flags |= AHC_LARGE_SEEPROM;
2497 	return (0);
2498 }
2499