xref: /freebsd/sys/dev/aic7xxx/aic7xxx_pci.c (revision 06c3fb27)
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 #ifdef __linux__
48 #include "aic7xxx_osm.h"
49 #include "aic7xxx_inline.h"
50 #include "aic7xxx_93cx6.h"
51 #else
52 #include <sys/cdefs.h>
53 #include <dev/aic7xxx/aic7xxx_osm.h>
54 #include <dev/aic7xxx/aic7xxx_inline.h>
55 #include <dev/aic7xxx/aic7xxx_93cx6.h>
56 #endif
57 
58 static __inline uint64_t
59 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
60 {
61 	uint64_t id;
62 
63 	id = subvendor
64 	   | (subdevice << 16)
65 	   | ((uint64_t)vendor << 32)
66 	   | ((uint64_t)device << 48);
67 
68 	return (id);
69 }
70 
71 #define ID_ALL_MASK			0xFFFFFFFFFFFFFFFFull
72 #define ID_DEV_VENDOR_MASK		0xFFFFFFFF00000000ull
73 #define ID_9005_GENERIC_MASK		0xFFF0FFFF00000000ull
74 #define ID_9005_SISL_MASK		0x000FFFFF00000000ull
75 #define ID_9005_SISL_ID			0x0005900500000000ull
76 #define ID_AIC7850			0x5078900400000000ull
77 #define ID_AHA_2902_04_10_15_20C_30C	0x5078900478509004ull
78 #define ID_AIC7855			0x5578900400000000ull
79 #define ID_AIC7859			0x3860900400000000ull
80 #define ID_AHA_2930CU			0x3860900438699004ull
81 #define ID_AIC7860			0x6078900400000000ull
82 #define ID_AIC7860C			0x6078900478609004ull
83 #define ID_AHA_1480A			0x6075900400000000ull
84 #define ID_AHA_2940AU_0			0x6178900400000000ull
85 #define ID_AHA_2940AU_1			0x6178900478619004ull
86 #define ID_AHA_2940AU_CN		0x2178900478219004ull
87 #define ID_AHA_2930C_VAR		0x6038900438689004ull
88 
89 #define ID_AIC7870			0x7078900400000000ull
90 #define ID_AHA_2940			0x7178900400000000ull
91 #define ID_AHA_3940			0x7278900400000000ull
92 #define ID_AHA_398X			0x7378900400000000ull
93 #define ID_AHA_2944			0x7478900400000000ull
94 #define ID_AHA_3944			0x7578900400000000ull
95 #define ID_AHA_4944			0x7678900400000000ull
96 
97 #define ID_AIC7880			0x8078900400000000ull
98 #define ID_AIC7880_B			0x8078900478809004ull
99 #define ID_AHA_2940U			0x8178900400000000ull
100 #define ID_AHA_3940U			0x8278900400000000ull
101 #define ID_AHA_2944U			0x8478900400000000ull
102 #define ID_AHA_3944U			0x8578900400000000ull
103 #define ID_AHA_398XU			0x8378900400000000ull
104 #define ID_AHA_4944U			0x8678900400000000ull
105 #define ID_AHA_2940UB			0x8178900478819004ull
106 #define ID_AHA_2930U			0x8878900478889004ull
107 #define ID_AHA_2940U_PRO		0x8778900478879004ull
108 #define ID_AHA_2940U_CN			0x0078900478009004ull
109 
110 #define ID_AIC7895			0x7895900478959004ull
111 #define ID_AIC7895_ARO			0x7890900478939004ull
112 #define ID_AIC7895_ARO_MASK		0xFFF0FFFFFFFFFFFFull
113 #define ID_AHA_2940U_DUAL		0x7895900478919004ull
114 #define ID_AHA_3940AU			0x7895900478929004ull
115 #define ID_AHA_3944AU			0x7895900478949004ull
116 
117 #define ID_AIC7890			0x001F9005000F9005ull
118 #define ID_AIC7890_ARO			0x00139005000F9005ull
119 #define ID_AAA_131U2			0x0013900500039005ull
120 #define ID_AHA_2930U2			0x0011900501819005ull
121 #define ID_AHA_2940U2B			0x00109005A1009005ull
122 #define ID_AHA_2940U2_OEM		0x0010900521809005ull
123 #define ID_AHA_2940U2			0x00109005A1809005ull
124 #define ID_AHA_2950U2B			0x00109005E1009005ull
125 
126 #define ID_AIC7892			0x008F9005FFFF9005ull
127 #define ID_AIC7892_ARO			0x00839005FFFF9005ull
128 #define ID_AHA_29160			0x00809005E2A09005ull
129 #define ID_AHA_29160_CPQ		0x00809005E2A00E11ull
130 #define ID_AHA_29160N			0x0080900562A09005ull
131 #define ID_AHA_29160C			0x0080900562209005ull
132 #define ID_AHA_29160B			0x00809005E2209005ull
133 #define ID_AHA_19160B			0x0081900562A19005ull
134 #define ID_AHA_2915_30LP		0x0082900502109005ull
135 
136 #define ID_AIC7896			0x005F9005FFFF9005ull
137 #define ID_AIC7896_ARO			0x00539005FFFF9005ull
138 #define ID_AHA_3950U2B_0		0x00509005FFFF9005ull
139 #define ID_AHA_3950U2B_1		0x00509005F5009005ull
140 #define ID_AHA_3950U2D_0		0x00519005FFFF9005ull
141 #define ID_AHA_3950U2D_1		0x00519005B5009005ull
142 
143 #define ID_AIC7899			0x00CF9005FFFF9005ull
144 #define ID_AIC7899_ARO			0x00C39005FFFF9005ull
145 #define ID_AHA_3960D			0x00C09005F6209005ull
146 #define ID_AHA_3960D_CPQ		0x00C09005F6200E11ull
147 
148 #define ID_AIC7810			0x1078900400000000ull
149 #define ID_AIC7815			0x7815900400000000ull
150 
151 #define DEVID_9005_TYPE(id) ((id) & 0xF)
152 #define		DEVID_9005_TYPE_HBA		0x0	/* Standard Card */
153 #define		DEVID_9005_TYPE_AAA		0x3	/* RAID Card */
154 #define		DEVID_9005_TYPE_SISL		0x5	/* Container ROMB */
155 #define		DEVID_9005_TYPE_MB		0xF	/* On Motherboard */
156 
157 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
158 #define		DEVID_9005_MAXRATE_U160		0x0
159 #define		DEVID_9005_MAXRATE_ULTRA2	0x1
160 #define		DEVID_9005_MAXRATE_ULTRA	0x2
161 #define		DEVID_9005_MAXRATE_FAST		0x3
162 
163 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
164 
165 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
166 #define		DEVID_9005_CLASS_SPI		0x0	/* Parallel SCSI */
167 
168 #define SUBID_9005_TYPE(id) ((id) & 0xF)
169 #define		SUBID_9005_TYPE_MB		0xF	/* On Motherboard */
170 #define		SUBID_9005_TYPE_CARD		0x0	/* Standard Card */
171 #define		SUBID_9005_TYPE_LCCARD		0x1	/* Low Cost Card */
172 #define		SUBID_9005_TYPE_RAID		0x3	/* Combined with Raid */
173 
174 #define SUBID_9005_TYPE_KNOWN(id)			\
175 	  ((((id) & 0xF) == SUBID_9005_TYPE_MB)		\
176 	|| (((id) & 0xF) == SUBID_9005_TYPE_CARD)	\
177 	|| (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)	\
178 	|| (((id) & 0xF) == SUBID_9005_TYPE_RAID))
179 
180 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
181 #define		SUBID_9005_MAXRATE_ULTRA2	0x0
182 #define		SUBID_9005_MAXRATE_ULTRA	0x1
183 #define		SUBID_9005_MAXRATE_U160		0x2
184 #define		SUBID_9005_MAXRATE_RESERVED	0x3
185 
186 #define SUBID_9005_SEEPTYPE(id)						\
187 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
188 	 ? ((id) & 0xC0) >> 6						\
189 	 : ((id) & 0x300) >> 8)
190 #define		SUBID_9005_SEEPTYPE_NONE	0x0
191 #define		SUBID_9005_SEEPTYPE_1K		0x1
192 #define		SUBID_9005_SEEPTYPE_2K_4K	0x2
193 #define		SUBID_9005_SEEPTYPE_RESERVED	0x3
194 #define SUBID_9005_AUTOTERM(id)						\
195 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
196 	 ? (((id) & 0x400) >> 10) == 0					\
197 	 : (((id) & 0x40) >> 6) == 0)
198 
199 #define SUBID_9005_NUMCHAN(id)						\
200 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
201 	 ? ((id) & 0x300) >> 8						\
202 	 : ((id) & 0xC00) >> 10)
203 
204 #define SUBID_9005_LEGACYCONN(id)					\
205 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
206 	 ? 0								\
207 	 : ((id) & 0x80) >> 7)
208 
209 #define SUBID_9005_MFUNCENB(id)						\
210 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
211 	 ? ((id) & 0x800) >> 11						\
212 	 : ((id) & 0x1000) >> 12)
213 /*
214  * Informational only. Should use chip register to be
215  * certain, but may be use in identification strings.
216  */
217 #define SUBID_9005_CARD_SCSIWIDTH_MASK	0x2000
218 #define SUBID_9005_CARD_PCIWIDTH_MASK	0x4000
219 #define SUBID_9005_CARD_SEDIFF_MASK	0x8000
220 
221 static ahc_device_setup_t ahc_aic785X_setup;
222 static ahc_device_setup_t ahc_aic7860_setup;
223 static ahc_device_setup_t ahc_apa1480_setup;
224 static ahc_device_setup_t ahc_aic7870_setup;
225 static ahc_device_setup_t ahc_aha394X_setup;
226 static ahc_device_setup_t ahc_aha494X_setup;
227 static ahc_device_setup_t ahc_aha398X_setup;
228 static ahc_device_setup_t ahc_aic7880_setup;
229 static ahc_device_setup_t ahc_aha2940Pro_setup;
230 static ahc_device_setup_t ahc_aha394XU_setup;
231 static ahc_device_setup_t ahc_aha398XU_setup;
232 static ahc_device_setup_t ahc_aic7890_setup;
233 static ahc_device_setup_t ahc_aic7892_setup;
234 static ahc_device_setup_t ahc_aic7895_setup;
235 static ahc_device_setup_t ahc_aic7896_setup;
236 static ahc_device_setup_t ahc_aic7899_setup;
237 static ahc_device_setup_t ahc_aha29160C_setup;
238 static ahc_device_setup_t ahc_raid_setup;
239 static ahc_device_setup_t ahc_aha394XX_setup;
240 static ahc_device_setup_t ahc_aha494XX_setup;
241 static ahc_device_setup_t ahc_aha398XX_setup;
242 
243 struct ahc_pci_identity ahc_pci_ident_table [] =
244 {
245 	/* aic7850 based controllers */
246 	{
247 		ID_AHA_2902_04_10_15_20C_30C,
248 		ID_ALL_MASK,
249 		"Adaptec 2902/04/10/15/20C/30C SCSI adapter",
250 		ahc_aic785X_setup
251 	},
252 	/* aic7860 based controllers */
253 	{
254 		ID_AHA_2930CU,
255 		ID_ALL_MASK,
256 		"Adaptec 2930CU SCSI adapter",
257 		ahc_aic7860_setup
258 	},
259 	{
260 		ID_AHA_1480A & ID_DEV_VENDOR_MASK,
261 		ID_DEV_VENDOR_MASK,
262 		"Adaptec 1480A Ultra SCSI adapter",
263 		ahc_apa1480_setup
264 	},
265 	{
266 		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
267 		ID_DEV_VENDOR_MASK,
268 		"Adaptec 2940A Ultra SCSI adapter",
269 		ahc_aic7860_setup
270 	},
271 	{
272 		ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
273 		ID_DEV_VENDOR_MASK,
274 		"Adaptec 2940A/CN Ultra SCSI adapter",
275 		ahc_aic7860_setup
276 	},
277 	{
278 		ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
279 		ID_DEV_VENDOR_MASK,
280 		"Adaptec 2930C Ultra SCSI adapter (VAR)",
281 		ahc_aic7860_setup
282 	},
283 	/* aic7870 based controllers */
284 	{
285 		ID_AHA_2940,
286 		ID_ALL_MASK,
287 		"Adaptec 2940 SCSI adapter",
288 		ahc_aic7870_setup
289 	},
290 	{
291 		ID_AHA_3940,
292 		ID_ALL_MASK,
293 		"Adaptec 3940 SCSI adapter",
294 		ahc_aha394X_setup
295 	},
296 	{
297 		ID_AHA_398X,
298 		ID_ALL_MASK,
299 		"Adaptec 398X SCSI RAID adapter",
300 		ahc_aha398X_setup
301 	},
302 	{
303 		ID_AHA_2944,
304 		ID_ALL_MASK,
305 		"Adaptec 2944 SCSI adapter",
306 		ahc_aic7870_setup
307 	},
308 	{
309 		ID_AHA_3944,
310 		ID_ALL_MASK,
311 		"Adaptec 3944 SCSI adapter",
312 		ahc_aha394X_setup
313 	},
314 	{
315 		ID_AHA_4944,
316 		ID_ALL_MASK,
317 		"Adaptec 4944 SCSI adapter",
318 		ahc_aha494X_setup
319 	},
320 	/* aic7880 based controllers */
321 	{
322 		ID_AHA_2940U & ID_DEV_VENDOR_MASK,
323 		ID_DEV_VENDOR_MASK,
324 		"Adaptec 2940 Ultra SCSI adapter",
325 		ahc_aic7880_setup
326 	},
327 	{
328 		ID_AHA_3940U & ID_DEV_VENDOR_MASK,
329 		ID_DEV_VENDOR_MASK,
330 		"Adaptec 3940 Ultra SCSI adapter",
331 		ahc_aha394XU_setup
332 	},
333 	{
334 		ID_AHA_2944U & ID_DEV_VENDOR_MASK,
335 		ID_DEV_VENDOR_MASK,
336 		"Adaptec 2944 Ultra SCSI adapter",
337 		ahc_aic7880_setup
338 	},
339 	{
340 		ID_AHA_3944U & ID_DEV_VENDOR_MASK,
341 		ID_DEV_VENDOR_MASK,
342 		"Adaptec 3944 Ultra SCSI adapter",
343 		ahc_aha394XU_setup
344 	},
345 	{
346 		ID_AHA_398XU & ID_DEV_VENDOR_MASK,
347 		ID_DEV_VENDOR_MASK,
348 		"Adaptec 398X Ultra SCSI RAID adapter",
349 		ahc_aha398XU_setup
350 	},
351 	{
352 		/*
353 		 * XXX Don't know the slot numbers
354 		 * so we can't identify channels
355 		 */
356 		ID_AHA_4944U & ID_DEV_VENDOR_MASK,
357 		ID_DEV_VENDOR_MASK,
358 		"Adaptec 4944 Ultra SCSI adapter",
359 		ahc_aic7880_setup
360 	},
361 	{
362 		ID_AHA_2930U & ID_DEV_VENDOR_MASK,
363 		ID_DEV_VENDOR_MASK,
364 		"Adaptec 2930 Ultra SCSI adapter",
365 		ahc_aic7880_setup
366 	},
367 	{
368 		ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
369 		ID_DEV_VENDOR_MASK,
370 		"Adaptec 2940 Pro Ultra SCSI adapter",
371 		ahc_aha2940Pro_setup
372 	},
373 	{
374 		ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
375 		ID_DEV_VENDOR_MASK,
376 		"Adaptec 2940/CN Ultra SCSI adapter",
377 		ahc_aic7880_setup
378 	},
379 	/* Ignore all SISL (AAC on MB) based controllers. */
380 	{
381 		ID_9005_SISL_ID,
382 		ID_9005_SISL_MASK,
383 		NULL,
384 		NULL
385 	},
386 	/* aic7890 based controllers */
387 	{
388 		ID_AHA_2930U2,
389 		ID_ALL_MASK,
390 		"Adaptec 2930 Ultra2 SCSI adapter",
391 		ahc_aic7890_setup
392 	},
393 	{
394 		ID_AHA_2940U2B,
395 		ID_ALL_MASK,
396 		"Adaptec 2940B Ultra2 SCSI adapter",
397 		ahc_aic7890_setup
398 	},
399 	{
400 		ID_AHA_2940U2_OEM,
401 		ID_ALL_MASK,
402 		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
403 		ahc_aic7890_setup
404 	},
405 	{
406 		ID_AHA_2940U2,
407 		ID_ALL_MASK,
408 		"Adaptec 2940 Ultra2 SCSI adapter",
409 		ahc_aic7890_setup
410 	},
411 	{
412 		ID_AHA_2950U2B,
413 		ID_ALL_MASK,
414 		"Adaptec 2950 Ultra2 SCSI adapter",
415 		ahc_aic7890_setup
416 	},
417 	{
418 		ID_AIC7890_ARO,
419 		ID_ALL_MASK,
420 		"Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
421 		ahc_aic7890_setup
422 	},
423 	{
424 		ID_AAA_131U2,
425 		ID_ALL_MASK,
426 		"Adaptec AAA-131 Ultra2 RAID adapter",
427 		ahc_aic7890_setup
428 	},
429 	/* aic7892 based controllers */
430 	{
431 		ID_AHA_29160,
432 		ID_ALL_MASK,
433 		"Adaptec 29160 Ultra160 SCSI adapter",
434 		ahc_aic7892_setup
435 	},
436 	{
437 		ID_AHA_29160_CPQ,
438 		ID_ALL_MASK,
439 		"Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
440 		ahc_aic7892_setup
441 	},
442 	{
443 		ID_AHA_29160N,
444 		ID_ALL_MASK,
445 		"Adaptec 29160N Ultra160 SCSI adapter",
446 		ahc_aic7892_setup
447 	},
448 	{
449 		ID_AHA_29160C,
450 		ID_ALL_MASK,
451 		"Adaptec 29160C Ultra160 SCSI adapter",
452 		ahc_aha29160C_setup
453 	},
454 	{
455 		ID_AHA_29160B,
456 		ID_ALL_MASK,
457 		"Adaptec 29160B Ultra160 SCSI adapter",
458 		ahc_aic7892_setup
459 	},
460 	{
461 		ID_AHA_19160B,
462 		ID_ALL_MASK,
463 		"Adaptec 19160B Ultra160 SCSI adapter",
464 		ahc_aic7892_setup
465 	},
466 	{
467 		ID_AIC7892_ARO,
468 		ID_ALL_MASK,
469 		"Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
470 		ahc_aic7892_setup
471 	},
472 	{
473 		ID_AHA_2915_30LP,
474 		ID_ALL_MASK,
475 		"Adaptec 2915/30LP Ultra160 SCSI adapter",
476 		ahc_aic7892_setup
477 	},
478 	/* aic7895 based controllers */
479 	{
480 		ID_AHA_2940U_DUAL,
481 		ID_ALL_MASK,
482 		"Adaptec 2940/DUAL Ultra SCSI adapter",
483 		ahc_aic7895_setup
484 	},
485 	{
486 		ID_AHA_3940AU,
487 		ID_ALL_MASK,
488 		"Adaptec 3940A Ultra SCSI adapter",
489 		ahc_aic7895_setup
490 	},
491 	{
492 		ID_AHA_3944AU,
493 		ID_ALL_MASK,
494 		"Adaptec 3944A Ultra SCSI adapter",
495 		ahc_aic7895_setup
496 	},
497 	{
498 		ID_AIC7895_ARO,
499 		ID_AIC7895_ARO_MASK,
500 		"Adaptec aic7895 Ultra SCSI adapter (ARO)",
501 		ahc_aic7895_setup
502 	},
503 	/* aic7896/97 based controllers */
504 	{
505 		ID_AHA_3950U2B_0,
506 		ID_ALL_MASK,
507 		"Adaptec 3950B Ultra2 SCSI adapter",
508 		ahc_aic7896_setup
509 	},
510 	{
511 		ID_AHA_3950U2B_1,
512 		ID_ALL_MASK,
513 		"Adaptec 3950B Ultra2 SCSI adapter",
514 		ahc_aic7896_setup
515 	},
516 	{
517 		ID_AHA_3950U2D_0,
518 		ID_ALL_MASK,
519 		"Adaptec 3950D Ultra2 SCSI adapter",
520 		ahc_aic7896_setup
521 	},
522 	{
523 		ID_AHA_3950U2D_1,
524 		ID_ALL_MASK,
525 		"Adaptec 3950D Ultra2 SCSI adapter",
526 		ahc_aic7896_setup
527 	},
528 	{
529 		ID_AIC7896_ARO,
530 		ID_ALL_MASK,
531 		"Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
532 		ahc_aic7896_setup
533 	},
534 	/* aic7899 based controllers */
535 	{
536 		ID_AHA_3960D,
537 		ID_ALL_MASK,
538 		"Adaptec 3960D Ultra160 SCSI adapter",
539 		ahc_aic7899_setup
540 	},
541 	{
542 		ID_AHA_3960D_CPQ,
543 		ID_ALL_MASK,
544 		"Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
545 		ahc_aic7899_setup
546 	},
547 	{
548 		ID_AIC7899_ARO,
549 		ID_ALL_MASK,
550 		"Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
551 		ahc_aic7899_setup
552 	},
553 	/* Generic chip probes for devices we don't know 'exactly' */
554 	{
555 		ID_AIC7850 & ID_DEV_VENDOR_MASK,
556 		ID_DEV_VENDOR_MASK,
557 		"Adaptec aic7850 SCSI adapter",
558 		ahc_aic785X_setup
559 	},
560 	{
561 		ID_AIC7855 & ID_DEV_VENDOR_MASK,
562 		ID_DEV_VENDOR_MASK,
563 		"Adaptec aic7855 SCSI adapter",
564 		ahc_aic785X_setup
565 	},
566 	{
567 		ID_AIC7859 & ID_DEV_VENDOR_MASK,
568 		ID_DEV_VENDOR_MASK,
569 		"Adaptec aic7859 SCSI adapter",
570 		ahc_aic7860_setup
571 	},
572 	{
573 		ID_AIC7860 & ID_DEV_VENDOR_MASK,
574 		ID_DEV_VENDOR_MASK,
575 		"Adaptec aic7860 Ultra SCSI adapter",
576 		ahc_aic7860_setup
577 	},
578 	{
579 		ID_AIC7870 & ID_DEV_VENDOR_MASK,
580 		ID_DEV_VENDOR_MASK,
581 		"Adaptec aic7870 SCSI adapter",
582 		ahc_aic7870_setup
583 	},
584 	{
585 		ID_AIC7880 & ID_DEV_VENDOR_MASK,
586 		ID_DEV_VENDOR_MASK,
587 		"Adaptec aic7880 Ultra SCSI adapter",
588 		ahc_aic7880_setup
589 	},
590 	{
591 		ID_AIC7890 & ID_9005_GENERIC_MASK,
592 		ID_9005_GENERIC_MASK,
593 		"Adaptec aic7890/91 Ultra2 SCSI adapter",
594 		ahc_aic7890_setup
595 	},
596 	{
597 		ID_AIC7892 & ID_9005_GENERIC_MASK,
598 		ID_9005_GENERIC_MASK,
599 		"Adaptec aic7892 Ultra160 SCSI adapter",
600 		ahc_aic7892_setup
601 	},
602 	{
603 		ID_AIC7895 & ID_DEV_VENDOR_MASK,
604 		ID_DEV_VENDOR_MASK,
605 		"Adaptec aic7895 Ultra SCSI adapter",
606 		ahc_aic7895_setup
607 	},
608 	{
609 		ID_AIC7896 & ID_9005_GENERIC_MASK,
610 		ID_9005_GENERIC_MASK,
611 		"Adaptec aic7896/97 Ultra2 SCSI adapter",
612 		ahc_aic7896_setup
613 	},
614 	{
615 		ID_AIC7899 & ID_9005_GENERIC_MASK,
616 		ID_9005_GENERIC_MASK,
617 		"Adaptec aic7899 Ultra160 SCSI adapter",
618 		ahc_aic7899_setup
619 	},
620 	{
621 		ID_AIC7810 & ID_DEV_VENDOR_MASK,
622 		ID_DEV_VENDOR_MASK,
623 		"Adaptec aic7810 RAID memory controller",
624 		ahc_raid_setup
625 	},
626 	{
627 		ID_AIC7815 & ID_DEV_VENDOR_MASK,
628 		ID_DEV_VENDOR_MASK,
629 		"Adaptec aic7815 RAID memory controller",
630 		ahc_raid_setup
631 	}
632 };
633 
634 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
635 
636 #define AHC_394X_SLOT_CHANNEL_A	4
637 #define AHC_394X_SLOT_CHANNEL_B	5
638 
639 #define AHC_398X_SLOT_CHANNEL_A	4
640 #define AHC_398X_SLOT_CHANNEL_B	8
641 #define AHC_398X_SLOT_CHANNEL_C	12
642 
643 #define AHC_494X_SLOT_CHANNEL_A	4
644 #define AHC_494X_SLOT_CHANNEL_B	5
645 #define AHC_494X_SLOT_CHANNEL_C	6
646 #define AHC_494X_SLOT_CHANNEL_D	7
647 
648 #define	DEVCONFIG		0x40
649 #define		PCIERRGENDIS	0x80000000ul
650 #define		SCBSIZE32	0x00010000ul	/* aic789X only */
651 #define		REXTVALID	0x00001000ul	/* ultra cards only */
652 #define		MPORTMODE	0x00000400ul	/* aic7870+ only */
653 #define		RAMPSM		0x00000200ul	/* aic7870+ only */
654 #define		VOLSENSE	0x00000100ul
655 #define		PCI64BIT	0x00000080ul	/* 64Bit PCI bus (Ultra2 Only)*/
656 #define		SCBRAMSEL	0x00000080ul
657 #define		MRDCEN		0x00000040ul
658 #define		EXTSCBTIME	0x00000020ul	/* aic7870 only */
659 #define		EXTSCBPEN	0x00000010ul	/* aic7870 only */
660 #define		BERREN		0x00000008ul
661 #define		DACEN		0x00000004ul
662 #define		STPWLEVEL	0x00000002ul
663 #define		DIFACTNEGEN	0x00000001ul	/* aic7870 only */
664 
665 #define	CSIZE_LATTIME		0x0c
666 #define		CACHESIZE	0x0000003ful	/* only 5 bits */
667 #define		LATTIME		0x0000ff00ul
668 
669 /* PCI STATUS definitions */
670 #define	DPE	0x80
671 #define SSE	0x40
672 #define	RMA	0x20
673 #define	RTA	0x10
674 #define STA	0x08
675 #define DPR	0x01
676 
677 static int ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
678 				     uint16_t subdevice, uint16_t subvendor);
679 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
680 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
681 				  int pcheck, int fast, int large);
682 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
683 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
684 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
685 				 struct seeprom_config *sc);
686 static void configure_termination(struct ahc_softc *ahc,
687 				  struct seeprom_descriptor *sd,
688 				  u_int adapter_control,
689 	 			  u_int *sxfrctl1);
690 
691 static void ahc_new_term_detect(struct ahc_softc *ahc,
692 				int *enableSEC_low,
693 				int *enableSEC_high,
694 				int *enablePRI_low,
695 				int *enablePRI_high,
696 				int *eeprom_present);
697 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
698 				 int *internal68_present,
699 				 int *externalcable_present,
700 				 int *eeprom_present);
701 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
702 				 int *externalcable_present,
703 				 int *eeprom_present);
704 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
705 static uint8_t read_brdctl(struct ahc_softc *ahc);
706 static void ahc_pci_intr(struct ahc_softc *ahc);
707 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
708 static int  ahc_pci_suspend(struct ahc_softc *ahc);
709 static int  ahc_pci_resume(struct ahc_softc *ahc);
710 
711 static int
712 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
713 			  uint16_t subdevice, uint16_t subvendor)
714 {
715 	int result;
716 
717 	/* Default to invalid. */
718 	result = 0;
719 	if (vendor == 0x9005
720 	 && subvendor == 0x9005
721          && subdevice != device
722          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
723 		switch (SUBID_9005_TYPE(subdevice)) {
724 		case SUBID_9005_TYPE_MB:
725 			break;
726 		case SUBID_9005_TYPE_CARD:
727 		case SUBID_9005_TYPE_LCCARD:
728 			/*
729 			 * Currently only trust Adaptec cards to
730 			 * get the sub device info correct.
731 			 */
732 			if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
733 				result = 1;
734 			break;
735 		case SUBID_9005_TYPE_RAID:
736 			break;
737 		default:
738 			break;
739 		}
740 	}
741 	return (result);
742 }
743 
744 struct ahc_pci_identity *
745 ahc_find_pci_device(aic_dev_softc_t pci)
746 {
747 	uint64_t  full_id;
748 	uint16_t  device;
749 	uint16_t  vendor;
750 	uint16_t  subdevice;
751 	uint16_t  subvendor;
752 	struct	  ahc_pci_identity *entry;
753 	u_int	  i;
754 
755 	vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
756 	device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
757 	subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
758 	subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
759 	full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
760 
761 	/*
762 	 * If the second function is not hooked up, ignore it.
763 	 * Unfortunately, not all MB vendors implement the
764 	 * subdevice ID as per the Adaptec spec, so do our best
765 	 * to sanity check it prior to accepting the subdevice
766 	 * ID as valid.
767 	 */
768 	if (aic_get_pci_function(pci) > 0
769 	 && ahc_9005_subdevinfo_valid(device, vendor, subdevice, subvendor)
770 	 && SUBID_9005_MFUNCENB(subdevice) == 0)
771 		return (NULL);
772 
773 	for (i = 0; i < ahc_num_pci_devs; i++) {
774 		entry = &ahc_pci_ident_table[i];
775 		if (entry->full_id == (full_id & entry->id_mask)) {
776 			/* Honor exclusion entries. */
777 			if (entry->name == NULL)
778 				return (NULL);
779 			return (entry);
780 		}
781 	}
782 	return (NULL);
783 }
784 
785 int
786 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
787 {
788 	u_int	 command;
789 	u_int	 our_id;
790 	u_int	 sxfrctl1;
791 	u_int	 scsiseq;
792 	u_int	 dscommand0;
793 	uint32_t devconfig;
794 	int	 error;
795 	uint8_t	 sblkctl;
796 
797 	our_id = 0;
798 	error = entry->setup(ahc);
799 	if (error != 0)
800 		return (error);
801 	ahc->chip |= AHC_PCI;
802 	ahc->description = entry->name;
803 
804 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
805 
806 	error = ahc_pci_map_registers(ahc);
807 	if (error != 0)
808 		return (error);
809 
810 	/*
811 	 * Before we continue probing the card, ensure that
812 	 * its interrupts are *disabled*.  We don't want
813 	 * a misstep to hang the machine in an interrupt
814 	 * storm.
815 	 */
816 	ahc_intr_enable(ahc, FALSE);
817 
818 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
819 
820 	/*
821 	 * If we need to support high memory, enable dual
822 	 * address cycles.  This bit must be set to enable
823 	 * high address bit generation even if we are on a
824 	 * 64bit bus (PCI64BIT set in devconfig).
825 	 */
826 	if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
827 		if (bootverbose)
828 			printf("%s: Enabling 39Bit Addressing\n",
829 			       ahc_name(ahc));
830 		devconfig |= DACEN;
831 	}
832 
833 	/* Ensure that pci error generation, a test feature, is disabled. */
834 	devconfig |= PCIERRGENDIS;
835 
836 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
837 
838 	/* Ensure busmastering is enabled */
839 	command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
840 	command |= PCIM_CMD_BUSMASTEREN;
841 
842 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
843 
844 	/* On all PCI adapters, we allow SCB paging */
845 	ahc->flags |= AHC_PAGESCBS;
846 
847 	error = ahc_softc_init(ahc);
848 	if (error != 0)
849 		return (error);
850 
851 	/*
852 	 * Disable PCI parity error checking.  Users typically
853 	 * do this to work around broken PCI chipsets that get
854 	 * the parity timing wrong and thus generate lots of spurious
855 	 * errors.  The chip only allows us to disable *all* parity
856 	 * error reporting when doing this, so CIO bus, scb ram, and
857 	 * scratch ram parity errors will be ignored too.
858 	 */
859 	if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
860 		ahc->seqctl |= FAILDIS;
861 
862 	ahc->bus_intr = ahc_pci_intr;
863 	ahc->bus_chip_init = ahc_pci_chip_init;
864 	ahc->bus_suspend = ahc_pci_suspend;
865 	ahc->bus_resume = ahc_pci_resume;
866 
867 	/* Remember how the card was setup in case there is no SEEPROM */
868 	if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
869 		ahc_pause(ahc);
870 		if ((ahc->features & AHC_ULTRA2) != 0)
871 			our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
872 		else
873 			our_id = ahc_inb(ahc, SCSIID) & OID;
874 		sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
875 		scsiseq = ahc_inb(ahc, SCSISEQ);
876 	} else {
877 		sxfrctl1 = STPWEN;
878 		our_id = 7;
879 		scsiseq = 0;
880 	}
881 
882 	error = ahc_reset(ahc, /*reinit*/FALSE);
883 	if (error != 0)
884 		return (ENXIO);
885 
886 	if ((ahc->features & AHC_DT) != 0) {
887 		u_int sfunct;
888 
889 		/* Perform ALT-Mode Setup */
890 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
891 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
892 		ahc_outb(ahc, OPTIONMODE,
893 			 OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
894 		ahc_outb(ahc, SFUNCT, sfunct);
895 
896 		/* Normal mode setup */
897 		ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
898 					  |TARGCRCENDEN);
899 	}
900 
901 	dscommand0 = ahc_inb(ahc, DSCOMMAND0);
902 	dscommand0 |= MPARCKEN|CACHETHEN;
903 	if ((ahc->features & AHC_ULTRA2) != 0) {
904 		/*
905 		 * DPARCKEN doesn't work correctly on
906 		 * some MBs so don't use it.
907 		 */
908 		dscommand0 &= ~DPARCKEN;
909 	}
910 
911 	/*
912 	 * Handle chips that must have cache line
913 	 * streaming (dis/en)abled.
914 	 */
915 	if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
916 		dscommand0 |= CACHETHEN;
917 
918 	if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
919 		dscommand0 &= ~CACHETHEN;
920 
921 	ahc_outb(ahc, DSCOMMAND0, dscommand0);
922 
923 	ahc->pci_cachesize =
924 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
925 				/*bytes*/1) & CACHESIZE;
926 	ahc->pci_cachesize *= 4;
927 
928 	if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
929 	 && ahc->pci_cachesize == 4) {
930 		aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
931 				     0, /*bytes*/1);
932 		ahc->pci_cachesize = 0;
933 	}
934 
935 	/*
936 	 * We cannot perform ULTRA speeds without the presence
937 	 * of the external precision resistor.
938 	 */
939 	if ((ahc->features & AHC_ULTRA) != 0) {
940 		uint32_t devconfig;
941 
942 		devconfig = aic_pci_read_config(ahc->dev_softc,
943 						DEVCONFIG, /*bytes*/4);
944 		if ((devconfig & REXTVALID) == 0)
945 			ahc->features &= ~AHC_ULTRA;
946 	}
947 
948 	/* See if we have a SEEPROM and perform auto-term */
949 	check_extport(ahc, &sxfrctl1);
950 
951 	/*
952 	 * Take the LED out of diagnostic mode
953 	 */
954 	sblkctl = ahc_inb(ahc, SBLKCTL);
955 	ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
956 
957 	if ((ahc->features & AHC_ULTRA2) != 0) {
958 		ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
959 	} else {
960 		ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
961 	}
962 
963 	if (ahc->flags & AHC_USEDEFAULTS) {
964 		/*
965 		 * PCI Adapter default setup
966 		 * Should only be used if the adapter does not have
967 		 * a SEEPROM.
968 		 */
969 		/* See if someone else set us up already */
970 		if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
971 		 && scsiseq != 0) {
972 			printf("%s: Using left over BIOS settings\n",
973 				ahc_name(ahc));
974 			ahc->flags &= ~AHC_USEDEFAULTS;
975 			ahc->flags |= AHC_BIOS_ENABLED;
976 		} else {
977 			/*
978 			 * Assume only one connector and always turn
979 			 * on termination.
980 			 */
981  			our_id = 0x07;
982 			sxfrctl1 = STPWEN;
983 		}
984 		ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
985 
986 		ahc->our_id = our_id;
987 	}
988 
989 	/*
990 	 * Take a look to see if we have external SRAM.
991 	 * We currently do not attempt to use SRAM that is
992 	 * shared among multiple controllers.
993 	 */
994 	ahc_probe_ext_scbram(ahc);
995 
996 	/*
997 	 * Record our termination setting for the
998 	 * generic initialization routine.
999 	 */
1000 	if ((sxfrctl1 & STPWEN) != 0)
1001 		ahc->flags |= AHC_TERM_ENB_A;
1002 
1003 	/*
1004 	 * Save chip register configuration data for chip resets
1005 	 * that occur during runtime and resume events.
1006 	 */
1007 	ahc->bus_softc.pci_softc.devconfig =
1008 	    aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1009 	ahc->bus_softc.pci_softc.command =
1010 	    aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
1011 	ahc->bus_softc.pci_softc.csize_lattime =
1012 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
1013 	ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1014 	ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
1015 	if ((ahc->features & AHC_DT) != 0) {
1016 		u_int sfunct;
1017 
1018 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
1019 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
1020 		ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
1021 		ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
1022 		ahc_outb(ahc, SFUNCT, sfunct);
1023 		ahc->bus_softc.pci_softc.crccontrol1 =
1024 		    ahc_inb(ahc, CRCCONTROL1);
1025 	}
1026 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
1027 		ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
1028 
1029 	if ((ahc->features & AHC_ULTRA2) != 0)
1030 		ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
1031 
1032 	/* Core initialization */
1033 	error = ahc_init(ahc);
1034 	if (error != 0)
1035 		return (error);
1036 
1037 	/*
1038 	 * Allow interrupts now that we are completely setup.
1039 	 */
1040 	error = ahc_pci_map_int(ahc);
1041 	if (error != 0)
1042 		return (error);
1043 
1044 	ahc_lock(ahc);
1045 	/*
1046 	 * Link this softc in with all other ahc instances.
1047 	 */
1048 	ahc_softc_insert(ahc);
1049 	ahc_unlock(ahc);
1050 	return (0);
1051 }
1052 
1053 /*
1054  * Test for the presence of external sram in an
1055  * "unshared" configuration.
1056  */
1057 static int
1058 ahc_ext_scbram_present(struct ahc_softc *ahc)
1059 {
1060 	u_int chip;
1061 	int ramps;
1062 	int single_user;
1063 	uint32_t devconfig;
1064 
1065 	chip = ahc->chip & AHC_CHIPID_MASK;
1066 	devconfig = aic_pci_read_config(ahc->dev_softc,
1067 					DEVCONFIG, /*bytes*/4);
1068 	single_user = (devconfig & MPORTMODE) != 0;
1069 
1070 	if ((ahc->features & AHC_ULTRA2) != 0)
1071 		ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
1072 	else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1073 		/*
1074 		 * External SCBRAM arbitration is flakey
1075 		 * on these chips.  Unfortunately this means
1076 		 * we don't use the extra SCB ram space on the
1077 		 * 3940AUW.
1078 		 */
1079 		ramps = 0;
1080 	else if (chip >= AHC_AIC7870)
1081 		ramps = (devconfig & RAMPSM) != 0;
1082 	else
1083 		ramps = 0;
1084 
1085 	if (ramps && single_user)
1086 		return (1);
1087 	return (0);
1088 }
1089 
1090 /*
1091  * Enable external scbram.
1092  */
1093 static void
1094 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1095 		  int fast, int large)
1096 {
1097 	uint32_t devconfig;
1098 
1099 	if (ahc->features & AHC_MULTI_FUNC) {
1100 		/*
1101 		 * Set the SCB Base addr (highest address bit)
1102 		 * depending on which channel we are.
1103 		 */
1104 		ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
1105 	}
1106 
1107 	ahc->flags &= ~AHC_LSCBS_ENABLED;
1108 	if (large)
1109 		ahc->flags |= AHC_LSCBS_ENABLED;
1110 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1111 	if ((ahc->features & AHC_ULTRA2) != 0) {
1112 		u_int dscommand0;
1113 
1114 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1115 		if (enable)
1116 			dscommand0 &= ~INTSCBRAMSEL;
1117 		else
1118 			dscommand0 |= INTSCBRAMSEL;
1119 		if (large)
1120 			dscommand0 &= ~USCBSIZE32;
1121 		else
1122 			dscommand0 |= USCBSIZE32;
1123 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
1124 	} else {
1125 		if (fast)
1126 			devconfig &= ~EXTSCBTIME;
1127 		else
1128 			devconfig |= EXTSCBTIME;
1129 		if (enable)
1130 			devconfig &= ~SCBRAMSEL;
1131 		else
1132 			devconfig |= SCBRAMSEL;
1133 		if (large)
1134 			devconfig &= ~SCBSIZE32;
1135 		else
1136 			devconfig |= SCBSIZE32;
1137 	}
1138 	if (pcheck)
1139 		devconfig |= EXTSCBPEN;
1140 	else
1141 		devconfig &= ~EXTSCBPEN;
1142 
1143 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1144 }
1145 
1146 /*
1147  * Take a look to see if we have external SRAM.
1148  * We currently do not attempt to use SRAM that is
1149  * shared among multiple controllers.
1150  */
1151 static void
1152 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1153 {
1154 	int num_scbs;
1155 	int test_num_scbs;
1156 	int enable;
1157 	int pcheck;
1158 	int fast;
1159 	int large;
1160 
1161 	enable = FALSE;
1162 	pcheck = FALSE;
1163 	fast = FALSE;
1164 	large = FALSE;
1165 	num_scbs = 0;
1166 
1167 	if (ahc_ext_scbram_present(ahc) == 0)
1168 		goto done;
1169 
1170 	/*
1171 	 * Probe for the best parameters to use.
1172 	 */
1173 	ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1174 	num_scbs = ahc_probe_scbs(ahc);
1175 	if (num_scbs == 0) {
1176 		/* The SRAM wasn't really present. */
1177 		goto done;
1178 	}
1179 	enable = TRUE;
1180 
1181 	/*
1182 	 * Clear any outstanding parity error
1183 	 * and ensure that parity error reporting
1184 	 * is enabled.
1185 	 */
1186 	ahc_outb(ahc, SEQCTL, 0);
1187 	ahc_outb(ahc, CLRINT, CLRPARERR);
1188 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1189 
1190 	/* Now see if we can do parity */
1191 	ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1192 	num_scbs = ahc_probe_scbs(ahc);
1193 	if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1194 	 || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1195 		pcheck = TRUE;
1196 
1197 	/* Clear any resulting parity error */
1198 	ahc_outb(ahc, CLRINT, CLRPARERR);
1199 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1200 
1201 	/* Now see if we can do fast timing */
1202 	ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1203 	test_num_scbs = ahc_probe_scbs(ahc);
1204 	if (test_num_scbs == num_scbs
1205 	 && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1206 	  || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1207 		fast = TRUE;
1208 
1209 	/*
1210 	 * See if we can use large SCBs and still maintain
1211 	 * the same overall count of SCBs.
1212 	 */
1213 	if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1214 		ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1215 		test_num_scbs = ahc_probe_scbs(ahc);
1216 		if (test_num_scbs >= num_scbs) {
1217 			large = TRUE;
1218 			num_scbs = test_num_scbs;
1219 	 		if (num_scbs >= 64) {
1220 				/*
1221 				 * We have enough space to move the
1222 				 * "busy targets table" into SCB space
1223 				 * and make it qualify all the way to the
1224 				 * lun level.
1225 				 */
1226 				ahc->flags |= AHC_SCB_BTT;
1227 			}
1228 		}
1229 	}
1230 done:
1231 	/*
1232 	 * Disable parity error reporting until we
1233 	 * can load instruction ram.
1234 	 */
1235 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1236 	/* Clear any latched parity error */
1237 	ahc_outb(ahc, CLRINT, CLRPARERR);
1238 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1239 	if (bootverbose && enable) {
1240 		printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1241 		       ahc_name(ahc), fast ? "fast" : "slow",
1242 		       pcheck ? ", parity checking enabled" : "",
1243 		       large ? 64 : 32);
1244 	}
1245 	ahc_scbram_config(ahc, enable, pcheck, fast, large);
1246 }
1247 
1248 /*
1249  * Perform some simple tests that should catch situations where
1250  * our registers are invalidly mapped.
1251  */
1252 int
1253 ahc_pci_test_register_access(struct ahc_softc *ahc)
1254 {
1255 	int	 error;
1256 	u_int	 status1;
1257 	uint32_t cmd;
1258 	uint8_t	 hcntrl;
1259 
1260 	error = EIO;
1261 
1262 	/*
1263 	 * Enable PCI error interrupt status, but suppress NMIs
1264 	 * generated by SERR raised due to target aborts.
1265 	 */
1266 	cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1267 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1268 			     cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1269 
1270 	/*
1271 	 * First a simple test to see if any
1272 	 * registers can be read.  Reading
1273 	 * HCNTRL has no side effects and has
1274 	 * at least one bit that is guaranteed to
1275 	 * be zero so it is a good register to
1276 	 * use for this test.
1277 	 */
1278 	hcntrl = ahc_inb(ahc, HCNTRL);
1279 
1280 	if (hcntrl == 0xFF)
1281 		goto fail;
1282 
1283 	if ((hcntrl & CHIPRST) != 0) {
1284 		/*
1285 		 * The chip has not been initialized since
1286 		 * PCI/EISA/VLB bus reset.  Don't trust
1287 		 * "left over BIOS data".
1288 		 */
1289 		ahc->flags |= AHC_NO_BIOS_INIT;
1290 	}
1291 
1292 	/*
1293 	 * Next create a situation where write combining
1294 	 * or read prefetching could be initiated by the
1295 	 * CPU or host bridge.  Our device does not support
1296 	 * either, so look for data corruption and/or flagged
1297 	 * PCI errors.  First pause without causing another
1298 	 * chip reset.
1299 	 */
1300 	hcntrl &= ~CHIPRST;
1301 	ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1302 	while (ahc_is_paused(ahc) == 0)
1303 		;
1304 
1305 	/* Clear any PCI errors that occurred before our driver attached. */
1306 	status1 = aic_pci_read_config(ahc->dev_softc,
1307 				      PCIR_STATUS + 1, /*bytes*/1);
1308 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1309 			     status1, /*bytes*/1);
1310 	ahc_outb(ahc, CLRINT, CLRPARERR);
1311 
1312 	ahc_outb(ahc, SEQCTL, PERRORDIS);
1313 	ahc_outb(ahc, SCBPTR, 0);
1314 	ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1315 	if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1316 		goto fail;
1317 
1318 	status1 = aic_pci_read_config(ahc->dev_softc,
1319 				      PCIR_STATUS + 1, /*bytes*/1);
1320 	if ((status1 & STA) != 0)
1321 		goto fail;
1322 
1323 	error = 0;
1324 
1325 fail:
1326 	/* Silently clear any latched errors. */
1327 	status1 = aic_pci_read_config(ahc->dev_softc,
1328 				      PCIR_STATUS + 1, /*bytes*/1);
1329 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1330 			     status1, /*bytes*/1);
1331 	ahc_outb(ahc, CLRINT, CLRPARERR);
1332 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1333 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1334 	return (error);
1335 }
1336 
1337 /*
1338  * Check the external port logic for a serial eeprom
1339  * and termination/cable detection contrls.
1340  */
1341 static void
1342 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1343 {
1344 	struct	seeprom_descriptor sd;
1345 	struct	seeprom_config *sc;
1346 	int	have_seeprom;
1347 	int	have_autoterm;
1348 
1349 	sd.sd_ahc = ahc;
1350 	sd.sd_control_offset = SEECTL;
1351 	sd.sd_status_offset = SEECTL;
1352 	sd.sd_dataout_offset = SEECTL;
1353 	sc = ahc->seep_config;
1354 
1355 	/*
1356 	 * For some multi-channel devices, the c46 is simply too
1357 	 * small to work.  For the other controller types, we can
1358 	 * get our information from either SEEPROM type.  Set the
1359 	 * type to start our probe with accordingly.
1360 	 */
1361 	if (ahc->flags & AHC_LARGE_SEEPROM)
1362 		sd.sd_chip = C56_66;
1363 	else
1364 		sd.sd_chip = C46;
1365 
1366 	sd.sd_MS = SEEMS;
1367 	sd.sd_RDY = SEERDY;
1368 	sd.sd_CS = SEECS;
1369 	sd.sd_CK = SEECK;
1370 	sd.sd_DO = SEEDO;
1371 	sd.sd_DI = SEEDI;
1372 
1373 	have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1374 	if (have_seeprom) {
1375 		if (bootverbose)
1376 			printf("%s: Reading SEEPROM...", ahc_name(ahc));
1377 
1378 		for (;;) {
1379 			u_int start_addr;
1380 
1381 			start_addr = 32 * (ahc->channel - 'A');
1382 
1383 			have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1384 							start_addr,
1385 							sizeof(*sc)/2);
1386 
1387 			if (have_seeprom)
1388 				have_seeprom = ahc_verify_cksum(sc);
1389 
1390 			if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1391 				if (bootverbose) {
1392 					if (have_seeprom == 0)
1393 						printf ("checksum error\n");
1394 					else
1395 						printf ("done.\n");
1396 				}
1397 				break;
1398 			}
1399 			sd.sd_chip = C56_66;
1400 		}
1401 		ahc_release_seeprom(&sd);
1402 
1403 		/* Remember the SEEPROM type for later */
1404 		if (sd.sd_chip == C56_66)
1405 			ahc->flags |= AHC_LARGE_SEEPROM;
1406 	}
1407 
1408 	if (!have_seeprom) {
1409 		/*
1410 		 * Pull scratch ram settings and treat them as
1411 		 * if they are the contents of an seeprom if
1412 		 * the 'ADPT' signature is found in SCB2.
1413 		 * We manually compose the data as 16bit values
1414 		 * to avoid endian issues.
1415 		 */
1416 		ahc_outb(ahc, SCBPTR, 2);
1417 		if (ahc_inb(ahc, SCB_BASE) == 'A'
1418 		 && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1419 		 && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1420 		 && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1421 			uint16_t *sc_data;
1422 			int	  i;
1423 
1424 			sc_data = (uint16_t *)sc;
1425 			for (i = 0; i < 32; i++, sc_data++) {
1426 				int	j;
1427 
1428 				j = i * 2;
1429 				*sc_data = ahc_inb(ahc, SRAM_BASE + j)
1430 					 | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1431 			}
1432 			have_seeprom = ahc_verify_cksum(sc);
1433 			if (have_seeprom)
1434 				ahc->flags |= AHC_SCB_CONFIG_USED;
1435 		}
1436 		/*
1437 		 * Clear any SCB parity errors in case this data and
1438 		 * its associated parity was not initialized by the BIOS
1439 		 */
1440 		ahc_outb(ahc, CLRINT, CLRPARERR);
1441 		ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1442 	}
1443 
1444 	if (!have_seeprom) {
1445 		if (bootverbose)
1446 			printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1447 		ahc->flags |= AHC_USEDEFAULTS;
1448 		free(ahc->seep_config, M_DEVBUF);
1449 		ahc->seep_config = NULL;
1450 		sc = NULL;
1451 	} else {
1452 		ahc_parse_pci_eeprom(ahc, sc);
1453 	}
1454 
1455 	/*
1456 	 * Cards that have the external logic necessary to talk to
1457 	 * a SEEPROM, are almost certain to have the remaining logic
1458 	 * necessary for auto-termination control.  This assumption
1459 	 * hasn't failed yet...
1460 	 */
1461 	have_autoterm = have_seeprom;
1462 
1463 	/*
1464 	 * Some low-cost chips have SEEPROM and auto-term control built
1465 	 * in, instead of using a GAL.  They can tell us directly
1466 	 * if the termination logic is enabled.
1467 	 */
1468 	if ((ahc->features & AHC_SPIOCAP) != 0) {
1469 		if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1470 			have_autoterm = FALSE;
1471 	}
1472 
1473 	if (have_autoterm) {
1474 		ahc->flags |= AHC_HAS_TERM_LOGIC;
1475 		ahc_acquire_seeprom(ahc, &sd);
1476 		configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1477 		ahc_release_seeprom(&sd);
1478 	} else if (have_seeprom) {
1479 		*sxfrctl1 &= ~STPWEN;
1480 		if ((sc->adapter_control & CFSTERM) != 0)
1481 			*sxfrctl1 |= STPWEN;
1482 		if (bootverbose)
1483 			printf("%s: Low byte termination %sabled\n",
1484 			       ahc_name(ahc),
1485 			       (*sxfrctl1 & STPWEN) ? "en" : "dis");
1486 	}
1487 }
1488 
1489 static void
1490 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1491 {
1492 	/*
1493 	 * Put the data we've collected down into SRAM
1494 	 * where ahc_init will find it.
1495 	 */
1496 	int	 i;
1497 	int	 max_targ = sc->max_targets & CFMAXTARG;
1498 	u_int	 scsi_conf;
1499 	uint16_t discenable;
1500 	uint16_t ultraenb;
1501 
1502 	discenable = 0;
1503 	ultraenb = 0;
1504 	if ((sc->adapter_control & CFULTRAEN) != 0) {
1505 		/*
1506 		 * Determine if this adapter has a "newstyle"
1507 		 * SEEPROM format.
1508 		 */
1509 		for (i = 0; i < max_targ; i++) {
1510 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1511 				ahc->flags |= AHC_NEWEEPROM_FMT;
1512 				break;
1513 			}
1514 		}
1515 	}
1516 
1517 	for (i = 0; i < max_targ; i++) {
1518 		u_int     scsirate;
1519 		uint16_t target_mask;
1520 
1521 		target_mask = 0x01 << i;
1522 		if (sc->device_flags[i] & CFDISC)
1523 			discenable |= target_mask;
1524 		if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1525 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1526 				ultraenb |= target_mask;
1527 		} else if ((sc->adapter_control & CFULTRAEN) != 0) {
1528 			ultraenb |= target_mask;
1529 		}
1530 		if ((sc->device_flags[i] & CFXFER) == 0x04
1531 		 && (ultraenb & target_mask) != 0) {
1532 			/* Treat 10MHz as a non-ultra speed */
1533 			sc->device_flags[i] &= ~CFXFER;
1534 		 	ultraenb &= ~target_mask;
1535 		}
1536 		if ((ahc->features & AHC_ULTRA2) != 0) {
1537 			u_int offset;
1538 
1539 			if (sc->device_flags[i] & CFSYNCH)
1540 				offset = MAX_OFFSET_ULTRA2;
1541 			else
1542 				offset = 0;
1543 			ahc_outb(ahc, TARG_OFFSET + i, offset);
1544 
1545 			/*
1546 			 * The ultra enable bits contain the
1547 			 * high bit of the ultra2 sync rate
1548 			 * field.
1549 			 */
1550 			scsirate = (sc->device_flags[i] & CFXFER)
1551 				 | ((ultraenb & target_mask) ? 0x8 : 0x0);
1552 			if (sc->device_flags[i] & CFWIDEB)
1553 				scsirate |= WIDEXFER;
1554 		} else {
1555 			scsirate = (sc->device_flags[i] & CFXFER) << 4;
1556 			if (sc->device_flags[i] & CFSYNCH)
1557 				scsirate |= SOFS;
1558 			if (sc->device_flags[i] & CFWIDEB)
1559 				scsirate |= WIDEXFER;
1560 		}
1561 		ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1562 	}
1563 	ahc->our_id = sc->brtime_id & CFSCSIID;
1564 
1565 	scsi_conf = (ahc->our_id & 0x7);
1566 	if (sc->adapter_control & CFSPARITY)
1567 		scsi_conf |= ENSPCHK;
1568 	if (sc->adapter_control & CFRESETB)
1569 		scsi_conf |= RESET_SCSI;
1570 
1571 	ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1572 
1573 	if (sc->bios_control & CFEXTEND)
1574 		ahc->flags |= AHC_EXTENDED_TRANS_A;
1575 
1576 	if (sc->bios_control & CFBIOSEN)
1577 		ahc->flags |= AHC_BIOS_ENABLED;
1578 	if (ahc->features & AHC_ULTRA
1579 	 && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1580 		/* Should we enable Ultra mode? */
1581 		if (!(sc->adapter_control & CFULTRAEN))
1582 			/* Treat us as a non-ultra card */
1583 			ultraenb = 0;
1584 	}
1585 
1586 	if (sc->signature == CFSIGNATURE
1587 	 || sc->signature == CFSIGNATURE2) {
1588 		uint32_t devconfig;
1589 
1590 		/* Honor the STPWLEVEL settings */
1591 		devconfig = aic_pci_read_config(ahc->dev_softc,
1592 						DEVCONFIG, /*bytes*/4);
1593 		devconfig &= ~STPWLEVEL;
1594 		if ((sc->bios_control & CFSTPWLEVEL) != 0)
1595 			devconfig |= STPWLEVEL;
1596 		aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
1597 				     devconfig, /*bytes*/4);
1598 	}
1599 	/* Set SCSICONF info */
1600 	ahc_outb(ahc, SCSICONF, scsi_conf);
1601 	ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1602 	ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1603 	ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1604 	ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1605 }
1606 
1607 static void
1608 configure_termination(struct ahc_softc *ahc,
1609 		      struct seeprom_descriptor *sd,
1610 		      u_int adapter_control,
1611 		      u_int *sxfrctl1)
1612 {
1613 	uint8_t brddat;
1614 
1615 	brddat = 0;
1616 
1617 	/*
1618 	 * Update the settings in sxfrctl1 to match the
1619 	 * termination settings
1620 	 */
1621 	*sxfrctl1 = 0;
1622 
1623 	/*
1624 	 * SEECS must be on for the GALS to latch
1625 	 * the data properly.  Be sure to leave MS
1626 	 * on or we will release the seeprom.
1627 	 */
1628 	SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1629 	if ((adapter_control & CFAUTOTERM) != 0
1630 	 || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1631 		int internal50_present;
1632 		int internal68_present;
1633 		int externalcable_present;
1634 		int eeprom_present;
1635 		int enableSEC_low;
1636 		int enableSEC_high;
1637 		int enablePRI_low;
1638 		int enablePRI_high;
1639 		int sum;
1640 
1641 		enableSEC_low = 0;
1642 		enableSEC_high = 0;
1643 		enablePRI_low = 0;
1644 		enablePRI_high = 0;
1645 		if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1646 			ahc_new_term_detect(ahc, &enableSEC_low,
1647 					    &enableSEC_high,
1648 					    &enablePRI_low,
1649 					    &enablePRI_high,
1650 					    &eeprom_present);
1651 			if ((adapter_control & CFSEAUTOTERM) == 0) {
1652 				if (bootverbose)
1653 					printf("%s: Manual SE Termination\n",
1654 					       ahc_name(ahc));
1655 				enableSEC_low = (adapter_control & CFSELOWTERM);
1656 				enableSEC_high =
1657 				    (adapter_control & CFSEHIGHTERM);
1658 			}
1659 			if ((adapter_control & CFAUTOTERM) == 0) {
1660 				if (bootverbose)
1661 					printf("%s: Manual LVD Termination\n",
1662 					       ahc_name(ahc));
1663 				enablePRI_low = (adapter_control & CFSTERM);
1664 				enablePRI_high = (adapter_control & CFWSTERM);
1665 			}
1666 			/* Make the table calculations below happy */
1667 			internal50_present = 0;
1668 			internal68_present = 1;
1669 			externalcable_present = 1;
1670 		} else if ((ahc->features & AHC_SPIOCAP) != 0) {
1671 			aic785X_cable_detect(ahc, &internal50_present,
1672 					     &externalcable_present,
1673 					     &eeprom_present);
1674 			/* Can never support a wide connector. */
1675 			internal68_present = 0;
1676 		} else {
1677 			aic787X_cable_detect(ahc, &internal50_present,
1678 					     &internal68_present,
1679 					     &externalcable_present,
1680 					     &eeprom_present);
1681 		}
1682 
1683 		if ((ahc->features & AHC_WIDE) == 0)
1684 			internal68_present = 0;
1685 
1686 		if (bootverbose
1687 		 && (ahc->features & AHC_ULTRA2) == 0) {
1688 			printf("%s: internal 50 cable %s present",
1689 			       ahc_name(ahc),
1690 			       internal50_present ? "is":"not");
1691 
1692 			if ((ahc->features & AHC_WIDE) != 0)
1693 				printf(", internal 68 cable %s present",
1694 				       internal68_present ? "is":"not");
1695 			printf("\n%s: external cable %s present\n",
1696 			       ahc_name(ahc),
1697 			       externalcable_present ? "is":"not");
1698 		}
1699 		if (bootverbose)
1700 			printf("%s: BIOS eeprom %s present\n",
1701 			       ahc_name(ahc), eeprom_present ? "is" : "not");
1702 
1703 		if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1704 			/*
1705 			 * The 50 pin connector is a separate bus,
1706 			 * so force it to always be terminated.
1707 			 * In the future, perform current sensing
1708 			 * to determine if we are in the middle of
1709 			 * a properly terminated bus.
1710 			 */
1711 			internal50_present = 0;
1712 		}
1713 
1714 		/*
1715 		 * Now set the termination based on what
1716 		 * we found.
1717 		 * Flash Enable = BRDDAT7
1718 		 * Secondary High Term Enable = BRDDAT6
1719 		 * Secondary Low Term Enable = BRDDAT5 (7890)
1720 		 * Primary High Term Enable = BRDDAT4 (7890)
1721 		 */
1722 		if ((ahc->features & AHC_ULTRA2) == 0
1723 		 && (internal50_present != 0)
1724 		 && (internal68_present != 0)
1725 		 && (externalcable_present != 0)) {
1726 			printf("%s: Illegal cable configuration!!. "
1727 			       "Only two connectors on the "
1728 			       "adapter may be used at a "
1729 			       "time!\n", ahc_name(ahc));
1730 
1731 			/*
1732 			 * Pretend there are no cables in the hope
1733 			 * that having all of the termination on
1734 			 * gives us a more stable bus.
1735 			 */
1736 		 	internal50_present = 0;
1737 			internal68_present = 0;
1738 			externalcable_present = 0;
1739 		}
1740 
1741 		if ((ahc->features & AHC_WIDE) != 0
1742 		 && ((externalcable_present == 0)
1743 		  || (internal68_present == 0)
1744 		  || (enableSEC_high != 0))) {
1745 			brddat |= BRDDAT6;
1746 			if (bootverbose) {
1747 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1748 					printf("%s: 68 pin termination "
1749 					       "Enabled\n", ahc_name(ahc));
1750 				else
1751 					printf("%s: %sHigh byte termination "
1752 					       "Enabled\n", ahc_name(ahc),
1753 					       enableSEC_high ? "Secondary "
1754 							      : "");
1755 			}
1756 		}
1757 
1758 		sum = internal50_present + internal68_present
1759 		    + externalcable_present;
1760 		if (sum < 2 || (enableSEC_low != 0)) {
1761 			if ((ahc->features & AHC_ULTRA2) != 0)
1762 				brddat |= BRDDAT5;
1763 			else
1764 				*sxfrctl1 |= STPWEN;
1765 			if (bootverbose) {
1766 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1767 					printf("%s: 50 pin termination "
1768 					       "Enabled\n", ahc_name(ahc));
1769 				else
1770 					printf("%s: %sLow byte termination "
1771 					       "Enabled\n", ahc_name(ahc),
1772 					       enableSEC_low ? "Secondary "
1773 							     : "");
1774 			}
1775 		}
1776 
1777 		if (enablePRI_low != 0) {
1778 			*sxfrctl1 |= STPWEN;
1779 			if (bootverbose)
1780 				printf("%s: Primary Low Byte termination "
1781 				       "Enabled\n", ahc_name(ahc));
1782 		}
1783 
1784 		/*
1785 		 * Setup STPWEN before setting up the rest of
1786 		 * the termination per the tech note on the U160 cards.
1787 		 */
1788 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1789 
1790 		if (enablePRI_high != 0) {
1791 			brddat |= BRDDAT4;
1792 			if (bootverbose)
1793 				printf("%s: Primary High Byte "
1794 				       "termination Enabled\n",
1795 				       ahc_name(ahc));
1796 		}
1797 
1798 		write_brdctl(ahc, brddat);
1799 
1800 	} else {
1801 		if ((adapter_control & CFSTERM) != 0) {
1802 			*sxfrctl1 |= STPWEN;
1803 
1804 			if (bootverbose)
1805 				printf("%s: %sLow byte termination Enabled\n",
1806 				       ahc_name(ahc),
1807 				       (ahc->features & AHC_ULTRA2) ? "Primary "
1808 								    : "");
1809 		}
1810 
1811 		if ((adapter_control & CFWSTERM) != 0
1812 		 && (ahc->features & AHC_WIDE) != 0) {
1813 			brddat |= BRDDAT6;
1814 			if (bootverbose)
1815 				printf("%s: %sHigh byte termination Enabled\n",
1816 				       ahc_name(ahc),
1817 				       (ahc->features & AHC_ULTRA2)
1818 				     ? "Secondary " : "");
1819 		}
1820 
1821 		/*
1822 		 * Setup STPWEN before setting up the rest of
1823 		 * the termination per the tech note on the U160 cards.
1824 		 */
1825 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1826 
1827 		if ((ahc->features & AHC_WIDE) != 0)
1828 			write_brdctl(ahc, brddat);
1829 	}
1830 	SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1831 }
1832 
1833 static void
1834 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1835 		    int *enableSEC_high, int *enablePRI_low,
1836 		    int *enablePRI_high, int *eeprom_present)
1837 {
1838 	uint8_t brdctl;
1839 
1840 	/*
1841 	 * BRDDAT7 = Eeprom
1842 	 * BRDDAT6 = Enable Secondary High Byte termination
1843 	 * BRDDAT5 = Enable Secondary Low Byte termination
1844 	 * BRDDAT4 = Enable Primary high byte termination
1845 	 * BRDDAT3 = Enable Primary low byte termination
1846 	 */
1847 	brdctl = read_brdctl(ahc);
1848 	*eeprom_present = brdctl & BRDDAT7;
1849 	*enableSEC_high = (brdctl & BRDDAT6);
1850 	*enableSEC_low = (brdctl & BRDDAT5);
1851 	*enablePRI_high = (brdctl & BRDDAT4);
1852 	*enablePRI_low = (brdctl & BRDDAT3);
1853 }
1854 
1855 static void
1856 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1857 		     int *internal68_present, int *externalcable_present,
1858 		     int *eeprom_present)
1859 {
1860 	uint8_t brdctl;
1861 
1862 	/*
1863 	 * First read the status of our cables.
1864 	 * Set the rom bank to 0 since the
1865 	 * bank setting serves as a multiplexor
1866 	 * for the cable detection logic.
1867 	 * BRDDAT5 controls the bank switch.
1868 	 */
1869 	write_brdctl(ahc, 0);
1870 
1871 	/*
1872 	 * Now read the state of the internal
1873 	 * connectors.  BRDDAT6 is INT50 and
1874 	 * BRDDAT7 is INT68.
1875 	 */
1876 	brdctl = read_brdctl(ahc);
1877 	*internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1878 	*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1879 
1880 	/*
1881 	 * Set the rom bank to 1 and determine
1882 	 * the other signals.
1883 	 */
1884 	write_brdctl(ahc, BRDDAT5);
1885 
1886 	/*
1887 	 * Now read the state of the external
1888 	 * connectors.  BRDDAT6 is EXT68 and
1889 	 * BRDDAT7 is EPROMPS.
1890 	 */
1891 	brdctl = read_brdctl(ahc);
1892 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1893 	*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1894 }
1895 
1896 static void
1897 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1898 		     int *externalcable_present, int *eeprom_present)
1899 {
1900 	uint8_t brdctl;
1901 	uint8_t spiocap;
1902 
1903 	spiocap = ahc_inb(ahc, SPIOCAP);
1904 	spiocap &= ~SOFTCMDEN;
1905 	spiocap |= EXT_BRDCTL;
1906 	ahc_outb(ahc, SPIOCAP, spiocap);
1907 	ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1908 	ahc_flush_device_writes(ahc);
1909 	aic_delay(500);
1910 	ahc_outb(ahc, BRDCTL, 0);
1911 	ahc_flush_device_writes(ahc);
1912 	aic_delay(500);
1913 	brdctl = ahc_inb(ahc, BRDCTL);
1914 	*internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1915 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1916 	*eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1917 }
1918 
1919 int
1920 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1921 {
1922 	int wait;
1923 
1924 	if ((ahc->features & AHC_SPIOCAP) != 0
1925 	 && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1926 		return (0);
1927 
1928 	/*
1929 	 * Request access of the memory port.  When access is
1930 	 * granted, SEERDY will go high.  We use a 1 second
1931 	 * timeout which should be near 1 second more than
1932 	 * is needed.  Reason: after the chip reset, there
1933 	 * should be no contention.
1934 	 */
1935 	SEEPROM_OUTB(sd, sd->sd_MS);
1936 	wait = 1000;  /* 1 second timeout in msec */
1937 	while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1938 		aic_delay(1000);  /* delay 1 msec */
1939 	}
1940 	if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1941 		SEEPROM_OUTB(sd, 0);
1942 		return (0);
1943 	}
1944 	return(1);
1945 }
1946 
1947 void
1948 ahc_release_seeprom(struct seeprom_descriptor *sd)
1949 {
1950 	/* Release access to the memory port and the serial EEPROM. */
1951 	SEEPROM_OUTB(sd, 0);
1952 }
1953 
1954 static void
1955 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1956 {
1957 	uint8_t brdctl;
1958 
1959 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1960 		brdctl = BRDSTB;
1961 	 	if (ahc->channel == 'B')
1962 			brdctl |= BRDCS;
1963 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1964 		brdctl = 0;
1965 	} else {
1966 		brdctl = BRDSTB|BRDCS;
1967 	}
1968 	ahc_outb(ahc, BRDCTL, brdctl);
1969 	ahc_flush_device_writes(ahc);
1970 	brdctl |= value;
1971 	ahc_outb(ahc, BRDCTL, brdctl);
1972 	ahc_flush_device_writes(ahc);
1973 	if ((ahc->features & AHC_ULTRA2) != 0)
1974 		brdctl |= BRDSTB_ULTRA2;
1975 	else
1976 		brdctl &= ~BRDSTB;
1977 	ahc_outb(ahc, BRDCTL, brdctl);
1978 	ahc_flush_device_writes(ahc);
1979 	if ((ahc->features & AHC_ULTRA2) != 0)
1980 		brdctl = 0;
1981 	else
1982 		brdctl &= ~BRDCS;
1983 	ahc_outb(ahc, BRDCTL, brdctl);
1984 }
1985 
1986 static uint8_t
1987 read_brdctl(struct ahc_softc *ahc)
1988 {
1989 	uint8_t brdctl;
1990 	uint8_t value;
1991 
1992 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1993 		brdctl = BRDRW;
1994 	 	if (ahc->channel == 'B')
1995 			brdctl |= BRDCS;
1996 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1997 		brdctl = BRDRW_ULTRA2;
1998 	} else {
1999 		brdctl = BRDRW|BRDCS;
2000 	}
2001 	ahc_outb(ahc, BRDCTL, brdctl);
2002 	ahc_flush_device_writes(ahc);
2003 	value = ahc_inb(ahc, BRDCTL);
2004 	ahc_outb(ahc, BRDCTL, 0);
2005 	return (value);
2006 }
2007 
2008 static void
2009 ahc_pci_intr(struct ahc_softc *ahc)
2010 {
2011 	u_int error;
2012 	u_int status1;
2013 
2014 	error = ahc_inb(ahc, ERROR);
2015 	if ((error & PCIERRSTAT) == 0)
2016 		return;
2017 
2018 	status1 = aic_pci_read_config(ahc->dev_softc,
2019 				      PCIR_STATUS + 1, /*bytes*/1);
2020 
2021 	if ((status1 & ~DPE) != 0
2022 	 || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2023 		printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
2024 		       ahc_name(ahc),
2025 		       ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
2026 	}
2027 
2028 	if (status1 & DPE
2029 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2030 		ahc->pci_target_perr_count++;
2031 		printf("%s: Data Parity Error Detected during address "
2032 		       "or write data phase\n", ahc_name(ahc));
2033 	}
2034 	if (status1 & SSE) {
2035 		printf("%s: Signal System Error Detected\n", ahc_name(ahc));
2036 	}
2037 	if (status1 & RMA) {
2038 		printf("%s: Received a Master Abort\n", ahc_name(ahc));
2039 	}
2040 	if (status1 & RTA) {
2041 		printf("%s: Received a Target Abort\n", ahc_name(ahc));
2042 	}
2043 	if (status1 & STA) {
2044 		printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
2045 	}
2046 	if (status1 & DPR) {
2047 		printf("%s: Data Parity Error has been reported via PERR#\n",
2048 		       ahc_name(ahc));
2049 	}
2050 
2051 	/* Clear latched errors. */
2052 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
2053 			     status1, /*bytes*/1);
2054 
2055 	if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
2056 		printf("%s: Latched PCIERR interrupt with "
2057 		       "no status bits set\n", ahc_name(ahc));
2058 	} else {
2059 		ahc_outb(ahc, CLRINT, CLRPARERR);
2060 	}
2061 
2062 	if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
2063 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2064 		printf(
2065 "%s: WARNING WARNING WARNING WARNING\n"
2066 "%s: Too many PCI parity errors observed as a target.\n"
2067 "%s: Some device on this PCI bus is generating bad parity.\n"
2068 "%s: This is an error *observed by*, not *generated by*, %s.\n"
2069 "%s: PCI parity error checking has been disabled.\n"
2070 "%s: WARNING WARNING WARNING WARNING\n",
2071 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2072 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2073 		       ahc_name(ahc));
2074 		ahc->seqctl |= FAILDIS;
2075 		ahc->flags |= AHC_DISABLE_PCI_PERR;
2076 		ahc_outb(ahc, SEQCTL, ahc->seqctl);
2077 	}
2078 	ahc_unpause(ahc);
2079 }
2080 
2081 static int
2082 ahc_pci_chip_init(struct ahc_softc *ahc)
2083 {
2084 	ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2085 	ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2086 	if ((ahc->features & AHC_DT) != 0) {
2087 		u_int sfunct;
2088 
2089 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2090 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2091 		ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2092 		ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2093 		ahc_outb(ahc, SFUNCT, sfunct);
2094 		ahc_outb(ahc, CRCCONTROL1,
2095 			 ahc->bus_softc.pci_softc.crccontrol1);
2096 	}
2097 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
2098 		ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2099 
2100 	if ((ahc->features & AHC_ULTRA2) != 0)
2101 		ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2102 
2103 	return (ahc_chip_init(ahc));
2104 }
2105 
2106 static int
2107 ahc_pci_suspend(struct ahc_softc *ahc)
2108 {
2109 	return (ahc_suspend(ahc));
2110 }
2111 
2112 static int
2113 ahc_pci_resume(struct ahc_softc *ahc)
2114 {
2115 
2116 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
2117 
2118 	/*
2119 	 * We assume that the OS has restored our register
2120 	 * mappings, etc.  Just update the config space registers
2121 	 * that the OS doesn't know about and rely on our chip
2122 	 * reset handler to handle the rest.
2123 	 */
2124 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
2125 			     ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2126 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2127 			     ahc->bus_softc.pci_softc.command, /*bytes*/1);
2128 	aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2129 			     ahc->bus_softc.pci_softc.csize_lattime,
2130 			     /*bytes*/1);
2131 	if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2132 		struct	seeprom_descriptor sd;
2133 		u_int	sxfrctl1;
2134 
2135 		sd.sd_ahc = ahc;
2136 		sd.sd_control_offset = SEECTL;
2137 		sd.sd_status_offset = SEECTL;
2138 		sd.sd_dataout_offset = SEECTL;
2139 
2140 		ahc_acquire_seeprom(ahc, &sd);
2141 		configure_termination(ahc, &sd,
2142 				      ahc->seep_config->adapter_control,
2143 				      &sxfrctl1);
2144 		ahc_release_seeprom(&sd);
2145 	}
2146 	return (ahc_resume(ahc));
2147 }
2148 
2149 static int
2150 ahc_aic785X_setup(struct ahc_softc *ahc)
2151 {
2152 	aic_dev_softc_t pci;
2153 	uint8_t rev;
2154 
2155 	pci = ahc->dev_softc;
2156 	ahc->channel = 'A';
2157 	ahc->chip = AHC_AIC7850;
2158 	ahc->features = AHC_AIC7850_FE;
2159 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2160 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2161 	if (rev >= 1)
2162 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2163 	ahc->instruction_ram_size = 512;
2164 	return (0);
2165 }
2166 
2167 static int
2168 ahc_aic7860_setup(struct ahc_softc *ahc)
2169 {
2170 	aic_dev_softc_t pci;
2171 	uint8_t rev;
2172 
2173 	pci = ahc->dev_softc;
2174 	ahc->channel = 'A';
2175 	ahc->chip = AHC_AIC7860;
2176 	ahc->features = AHC_AIC7860_FE;
2177 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2178 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2179 	if (rev >= 1)
2180 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2181 	ahc->instruction_ram_size = 512;
2182 	return (0);
2183 }
2184 
2185 static int
2186 ahc_apa1480_setup(struct ahc_softc *ahc)
2187 {
2188 	int error;
2189 
2190 	error = ahc_aic7860_setup(ahc);
2191 	if (error != 0)
2192 		return (error);
2193 	ahc->features |= AHC_REMOVABLE;
2194 	return (0);
2195 }
2196 
2197 static int
2198 ahc_aic7870_setup(struct ahc_softc *ahc)
2199 {
2200 
2201 	ahc->channel = 'A';
2202 	ahc->chip = AHC_AIC7870;
2203 	ahc->features = AHC_AIC7870_FE;
2204 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2205 	ahc->instruction_ram_size = 512;
2206 	return (0);
2207 }
2208 
2209 static int
2210 ahc_aha394X_setup(struct ahc_softc *ahc)
2211 {
2212 	int error;
2213 
2214 	error = ahc_aic7870_setup(ahc);
2215 	if (error == 0)
2216 		error = ahc_aha394XX_setup(ahc);
2217 	return (error);
2218 }
2219 
2220 static int
2221 ahc_aha398X_setup(struct ahc_softc *ahc)
2222 {
2223 	int error;
2224 
2225 	error = ahc_aic7870_setup(ahc);
2226 	if (error == 0)
2227 		error = ahc_aha398XX_setup(ahc);
2228 	return (error);
2229 }
2230 
2231 static int
2232 ahc_aha494X_setup(struct ahc_softc *ahc)
2233 {
2234 	int error;
2235 
2236 	error = ahc_aic7870_setup(ahc);
2237 	if (error == 0)
2238 		error = ahc_aha494XX_setup(ahc);
2239 	return (error);
2240 }
2241 
2242 static int
2243 ahc_aic7880_setup(struct ahc_softc *ahc)
2244 {
2245 	aic_dev_softc_t pci;
2246 	uint8_t rev;
2247 
2248 	pci = ahc->dev_softc;
2249 	ahc->channel = 'A';
2250 	ahc->chip = AHC_AIC7880;
2251 	ahc->features = AHC_AIC7880_FE;
2252 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2253 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2254 	if (rev >= 1) {
2255 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2256 	} else {
2257 		ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2258 	}
2259 	ahc->instruction_ram_size = 512;
2260 	return (0);
2261 }
2262 
2263 static int
2264 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2265 {
2266 
2267 	ahc->flags |= AHC_INT50_SPEEDFLEX;
2268 	return (ahc_aic7880_setup(ahc));
2269 }
2270 
2271 static int
2272 ahc_aha394XU_setup(struct ahc_softc *ahc)
2273 {
2274 	int error;
2275 
2276 	error = ahc_aic7880_setup(ahc);
2277 	if (error == 0)
2278 		error = ahc_aha394XX_setup(ahc);
2279 	return (error);
2280 }
2281 
2282 static int
2283 ahc_aha398XU_setup(struct ahc_softc *ahc)
2284 {
2285 	int error;
2286 
2287 	error = ahc_aic7880_setup(ahc);
2288 	if (error == 0)
2289 		error = ahc_aha398XX_setup(ahc);
2290 	return (error);
2291 }
2292 
2293 static int
2294 ahc_aic7890_setup(struct ahc_softc *ahc)
2295 {
2296 	aic_dev_softc_t pci;
2297 	uint8_t rev;
2298 
2299 	pci = ahc->dev_softc;
2300 	ahc->channel = 'A';
2301 	ahc->chip = AHC_AIC7890;
2302 	ahc->features = AHC_AIC7890_FE;
2303 	ahc->flags |= AHC_NEWEEPROM_FMT;
2304 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2305 	if (rev == 0)
2306 		ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2307 	ahc->instruction_ram_size = 768;
2308 	return (0);
2309 }
2310 
2311 static int
2312 ahc_aic7892_setup(struct ahc_softc *ahc)
2313 {
2314 
2315 	ahc->channel = 'A';
2316 	ahc->chip = AHC_AIC7892;
2317 	ahc->features = AHC_AIC7892_FE;
2318 	ahc->flags |= AHC_NEWEEPROM_FMT;
2319 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2320 	ahc->instruction_ram_size = 1024;
2321 	return (0);
2322 }
2323 
2324 static int
2325 ahc_aic7895_setup(struct ahc_softc *ahc)
2326 {
2327 	aic_dev_softc_t pci;
2328 	uint8_t rev;
2329 
2330 	pci = ahc->dev_softc;
2331 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2332 	/*
2333 	 * The 'C' revision of the aic7895 has a few additional features.
2334 	 */
2335 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2336 	if (rev >= 4) {
2337 		ahc->chip = AHC_AIC7895C;
2338 		ahc->features = AHC_AIC7895C_FE;
2339 	} else  {
2340 		u_int command;
2341 
2342 		ahc->chip = AHC_AIC7895;
2343 		ahc->features = AHC_AIC7895_FE;
2344 
2345 		/*
2346 		 * The BIOS disables the use of MWI transactions
2347 		 * since it does not have the MWI bug work around
2348 		 * we have.  Disabling MWI reduces performance, so
2349 		 * turn it on again.
2350 		 */
2351 		command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2352 		command |= PCIM_CMD_MWRICEN;
2353 		aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2354 		ahc->bugs |= AHC_PCI_MWI_BUG;
2355 	}
2356 	/*
2357 	 * XXX Does CACHETHEN really not work???  What about PCI retry?
2358 	 * on C level chips.  Need to test, but for now, play it safe.
2359 	 */
2360 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2361 		  |  AHC_CACHETHEN_BUG;
2362 
2363 #if 0
2364 	uint32_t devconfig;
2365 
2366 	/*
2367 	 * Cachesize must also be zero due to stray DAC
2368 	 * problem when sitting behind some bridges.
2369 	 */
2370 	aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2371 	devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2372 	devconfig |= MRDCEN;
2373 	aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2374 #endif
2375 	ahc->flags |= AHC_NEWEEPROM_FMT;
2376 	ahc->instruction_ram_size = 512;
2377 	return (0);
2378 }
2379 
2380 static int
2381 ahc_aic7896_setup(struct ahc_softc *ahc)
2382 {
2383 	aic_dev_softc_t pci;
2384 
2385 	pci = ahc->dev_softc;
2386 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2387 	ahc->chip = AHC_AIC7896;
2388 	ahc->features = AHC_AIC7896_FE;
2389 	ahc->flags |= AHC_NEWEEPROM_FMT;
2390 	ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2391 	ahc->instruction_ram_size = 768;
2392 	return (0);
2393 }
2394 
2395 static int
2396 ahc_aic7899_setup(struct ahc_softc *ahc)
2397 {
2398 	aic_dev_softc_t pci;
2399 
2400 	pci = ahc->dev_softc;
2401 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2402 	ahc->chip = AHC_AIC7899;
2403 	ahc->features = AHC_AIC7899_FE;
2404 	ahc->flags |= AHC_NEWEEPROM_FMT;
2405 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2406 	ahc->instruction_ram_size = 1024;
2407 	return (0);
2408 }
2409 
2410 static int
2411 ahc_aha29160C_setup(struct ahc_softc *ahc)
2412 {
2413 	int error;
2414 
2415 	error = ahc_aic7899_setup(ahc);
2416 	if (error != 0)
2417 		return (error);
2418 	ahc->features |= AHC_REMOVABLE;
2419 	return (0);
2420 }
2421 
2422 static int
2423 ahc_raid_setup(struct ahc_softc *ahc)
2424 {
2425 	printf("RAID functionality unsupported\n");
2426 	return (ENXIO);
2427 }
2428 
2429 static int
2430 ahc_aha394XX_setup(struct ahc_softc *ahc)
2431 {
2432 	aic_dev_softc_t pci;
2433 
2434 	pci = ahc->dev_softc;
2435 	switch (aic_get_pci_slot(pci)) {
2436 	case AHC_394X_SLOT_CHANNEL_A:
2437 		ahc->channel = 'A';
2438 		break;
2439 	case AHC_394X_SLOT_CHANNEL_B:
2440 		ahc->channel = 'B';
2441 		break;
2442 	default:
2443 		printf("adapter at unexpected slot %d\n"
2444 		       "unable to map to a channel\n",
2445 		       aic_get_pci_slot(pci));
2446 		ahc->channel = 'A';
2447 	}
2448 	return (0);
2449 }
2450 
2451 static int
2452 ahc_aha398XX_setup(struct ahc_softc *ahc)
2453 {
2454 	aic_dev_softc_t pci;
2455 
2456 	pci = ahc->dev_softc;
2457 	switch (aic_get_pci_slot(pci)) {
2458 	case AHC_398X_SLOT_CHANNEL_A:
2459 		ahc->channel = 'A';
2460 		break;
2461 	case AHC_398X_SLOT_CHANNEL_B:
2462 		ahc->channel = 'B';
2463 		break;
2464 	case AHC_398X_SLOT_CHANNEL_C:
2465 		ahc->channel = 'C';
2466 		break;
2467 	default:
2468 		printf("adapter at unexpected slot %d\n"
2469 		       "unable to map to a channel\n",
2470 		       aic_get_pci_slot(pci));
2471 		ahc->channel = 'A';
2472 		break;
2473 	}
2474 	ahc->flags |= AHC_LARGE_SEEPROM;
2475 	return (0);
2476 }
2477 
2478 static int
2479 ahc_aha494XX_setup(struct ahc_softc *ahc)
2480 {
2481 	aic_dev_softc_t pci;
2482 
2483 	pci = ahc->dev_softc;
2484 	switch (aic_get_pci_slot(pci)) {
2485 	case AHC_494X_SLOT_CHANNEL_A:
2486 		ahc->channel = 'A';
2487 		break;
2488 	case AHC_494X_SLOT_CHANNEL_B:
2489 		ahc->channel = 'B';
2490 		break;
2491 	case AHC_494X_SLOT_CHANNEL_C:
2492 		ahc->channel = 'C';
2493 		break;
2494 	case AHC_494X_SLOT_CHANNEL_D:
2495 		ahc->channel = 'D';
2496 		break;
2497 	default:
2498 		printf("adapter at unexpected slot %d\n"
2499 		       "unable to map to a channel\n",
2500 		       aic_get_pci_slot(pci));
2501 		ahc->channel = 'A';
2502 	}
2503 	ahc->flags |= AHC_LARGE_SEEPROM;
2504 	return (0);
2505 }
2506