xref: /freebsd/sys/dev/aic7xxx/aic7xxx_pci.c (revision ae41709ab46305df80f7f35bb478a3c8ebf22ebb)
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 __FBSDID("$FreeBSD$");
54 #include <dev/aic7xxx/aic7xxx_osm.h>
55 #include <dev/aic7xxx/aic7xxx_inline.h>
56 #include <dev/aic7xxx/aic7xxx_93cx6.h>
57 #endif
58 
59 static __inline uint64_t
60 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
61 {
62 	uint64_t id;
63 
64 	id = subvendor
65 	   | (subdevice << 16)
66 	   | ((uint64_t)vendor << 32)
67 	   | ((uint64_t)device << 48);
68 
69 	return (id);
70 }
71 
72 #define ID_ALL_MASK			0xFFFFFFFFFFFFFFFFull
73 #define ID_DEV_VENDOR_MASK		0xFFFFFFFF00000000ull
74 #define ID_9005_GENERIC_MASK		0xFFF0FFFF00000000ull
75 #define ID_9005_SISL_MASK		0x000FFFFF00000000ull
76 #define ID_9005_SISL_ID			0x0005900500000000ull
77 #define ID_AIC7850			0x5078900400000000ull
78 #define ID_AHA_2902_04_10_15_20C_30C	0x5078900478509004ull
79 #define ID_AIC7855			0x5578900400000000ull
80 #define ID_AIC7859			0x3860900400000000ull
81 #define ID_AHA_2930CU			0x3860900438699004ull
82 #define ID_AIC7860			0x6078900400000000ull
83 #define ID_AIC7860C			0x6078900478609004ull
84 #define ID_AHA_1480A			0x6075900400000000ull
85 #define ID_AHA_2940AU_0			0x6178900400000000ull
86 #define ID_AHA_2940AU_1			0x6178900478619004ull
87 #define ID_AHA_2940AU_CN		0x2178900478219004ull
88 #define ID_AHA_2930C_VAR		0x6038900438689004ull
89 
90 #define ID_AIC7870			0x7078900400000000ull
91 #define ID_AHA_2940			0x7178900400000000ull
92 #define ID_AHA_3940			0x7278900400000000ull
93 #define ID_AHA_398X			0x7378900400000000ull
94 #define ID_AHA_2944			0x7478900400000000ull
95 #define ID_AHA_3944			0x7578900400000000ull
96 #define ID_AHA_4944			0x7678900400000000ull
97 
98 #define ID_AIC7880			0x8078900400000000ull
99 #define ID_AIC7880_B			0x8078900478809004ull
100 #define ID_AHA_2940U			0x8178900400000000ull
101 #define ID_AHA_3940U			0x8278900400000000ull
102 #define ID_AHA_2944U			0x8478900400000000ull
103 #define ID_AHA_3944U			0x8578900400000000ull
104 #define ID_AHA_398XU			0x8378900400000000ull
105 #define ID_AHA_4944U			0x8678900400000000ull
106 #define ID_AHA_2940UB			0x8178900478819004ull
107 #define ID_AHA_2930U			0x8878900478889004ull
108 #define ID_AHA_2940U_PRO		0x8778900478879004ull
109 #define ID_AHA_2940U_CN			0x0078900478009004ull
110 
111 #define ID_AIC7895			0x7895900478959004ull
112 #define ID_AIC7895_ARO			0x7890900478939004ull
113 #define ID_AIC7895_ARO_MASK		0xFFF0FFFFFFFFFFFFull
114 #define ID_AHA_2940U_DUAL		0x7895900478919004ull
115 #define ID_AHA_3940AU			0x7895900478929004ull
116 #define ID_AHA_3944AU			0x7895900478949004ull
117 
118 #define ID_AIC7890			0x001F9005000F9005ull
119 #define ID_AIC7890_ARO			0x00139005000F9005ull
120 #define ID_AAA_131U2			0x0013900500039005ull
121 #define ID_AHA_2930U2			0x0011900501819005ull
122 #define ID_AHA_2940U2B			0x00109005A1009005ull
123 #define ID_AHA_2940U2_OEM		0x0010900521809005ull
124 #define ID_AHA_2940U2			0x00109005A1809005ull
125 #define ID_AHA_2950U2B			0x00109005E1009005ull
126 
127 #define ID_AIC7892			0x008F9005FFFF9005ull
128 #define ID_AIC7892_ARO			0x00839005FFFF9005ull
129 #define ID_AHA_29160			0x00809005E2A09005ull
130 #define ID_AHA_29160_CPQ		0x00809005E2A00E11ull
131 #define ID_AHA_29160N			0x0080900562A09005ull
132 #define ID_AHA_29160C			0x0080900562209005ull
133 #define ID_AHA_29160B			0x00809005E2209005ull
134 #define ID_AHA_19160B			0x0081900562A19005ull
135 #define ID_AHA_2915_30LP		0x0082900502109005ull
136 
137 #define ID_AIC7896			0x005F9005FFFF9005ull
138 #define ID_AIC7896_ARO			0x00539005FFFF9005ull
139 #define ID_AHA_3950U2B_0		0x00509005FFFF9005ull
140 #define ID_AHA_3950U2B_1		0x00509005F5009005ull
141 #define ID_AHA_3950U2D_0		0x00519005FFFF9005ull
142 #define ID_AHA_3950U2D_1		0x00519005B5009005ull
143 
144 #define ID_AIC7899			0x00CF9005FFFF9005ull
145 #define ID_AIC7899_ARO			0x00C39005FFFF9005ull
146 #define ID_AHA_3960D			0x00C09005F6209005ull
147 #define ID_AHA_3960D_CPQ		0x00C09005F6200E11ull
148 
149 #define ID_AIC7810			0x1078900400000000ull
150 #define ID_AIC7815			0x7815900400000000ull
151 
152 #define DEVID_9005_TYPE(id) ((id) & 0xF)
153 #define		DEVID_9005_TYPE_HBA		0x0	/* Standard Card */
154 #define		DEVID_9005_TYPE_AAA		0x3	/* RAID Card */
155 #define		DEVID_9005_TYPE_SISL		0x5	/* Container ROMB */
156 #define		DEVID_9005_TYPE_MB		0xF	/* On Motherboard */
157 
158 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
159 #define		DEVID_9005_MAXRATE_U160		0x0
160 #define		DEVID_9005_MAXRATE_ULTRA2	0x1
161 #define		DEVID_9005_MAXRATE_ULTRA	0x2
162 #define		DEVID_9005_MAXRATE_FAST		0x3
163 
164 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
165 
166 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
167 #define		DEVID_9005_CLASS_SPI		0x0	/* Parallel SCSI */
168 
169 #define SUBID_9005_TYPE(id) ((id) & 0xF)
170 #define		SUBID_9005_TYPE_MB		0xF	/* On Motherboard */
171 #define		SUBID_9005_TYPE_CARD		0x0	/* Standard Card */
172 #define		SUBID_9005_TYPE_LCCARD		0x1	/* Low Cost Card */
173 #define		SUBID_9005_TYPE_RAID		0x3	/* Combined with Raid */
174 
175 #define SUBID_9005_TYPE_KNOWN(id)			\
176 	  ((((id) & 0xF) == SUBID_9005_TYPE_MB)		\
177 	|| (((id) & 0xF) == SUBID_9005_TYPE_CARD)	\
178 	|| (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)	\
179 	|| (((id) & 0xF) == SUBID_9005_TYPE_RAID))
180 
181 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
182 #define		SUBID_9005_MAXRATE_ULTRA2	0x0
183 #define		SUBID_9005_MAXRATE_ULTRA	0x1
184 #define		SUBID_9005_MAXRATE_U160		0x2
185 #define		SUBID_9005_MAXRATE_RESERVED	0x3
186 
187 #define SUBID_9005_SEEPTYPE(id)						\
188 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
189 	 ? ((id) & 0xC0) >> 6						\
190 	 : ((id) & 0x300) >> 8)
191 #define		SUBID_9005_SEEPTYPE_NONE	0x0
192 #define		SUBID_9005_SEEPTYPE_1K		0x1
193 #define		SUBID_9005_SEEPTYPE_2K_4K	0x2
194 #define		SUBID_9005_SEEPTYPE_RESERVED	0x3
195 #define SUBID_9005_AUTOTERM(id)						\
196 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
197 	 ? (((id) & 0x400) >> 10) == 0					\
198 	 : (((id) & 0x40) >> 6) == 0)
199 
200 #define SUBID_9005_NUMCHAN(id)						\
201 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
202 	 ? ((id) & 0x300) >> 8						\
203 	 : ((id) & 0xC00) >> 10)
204 
205 #define SUBID_9005_LEGACYCONN(id)					\
206 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
207 	 ? 0								\
208 	 : ((id) & 0x80) >> 7)
209 
210 #define SUBID_9005_MFUNCENB(id)						\
211 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
212 	 ? ((id) & 0x800) >> 11						\
213 	 : ((id) & 0x1000) >> 12)
214 /*
215  * Informational only. Should use chip register to be
216  * certain, but may be use in identification strings.
217  */
218 #define SUBID_9005_CARD_SCSIWIDTH_MASK	0x2000
219 #define SUBID_9005_CARD_PCIWIDTH_MASK	0x4000
220 #define SUBID_9005_CARD_SEDIFF_MASK	0x8000
221 
222 static ahc_device_setup_t ahc_aic785X_setup;
223 static ahc_device_setup_t ahc_aic7860_setup;
224 static ahc_device_setup_t ahc_apa1480_setup;
225 static ahc_device_setup_t ahc_aic7870_setup;
226 static ahc_device_setup_t ahc_aha394X_setup;
227 static ahc_device_setup_t ahc_aha494X_setup;
228 static ahc_device_setup_t ahc_aha398X_setup;
229 static ahc_device_setup_t ahc_aic7880_setup;
230 static ahc_device_setup_t ahc_aha2940Pro_setup;
231 static ahc_device_setup_t ahc_aha394XU_setup;
232 static ahc_device_setup_t ahc_aha398XU_setup;
233 static ahc_device_setup_t ahc_aic7890_setup;
234 static ahc_device_setup_t ahc_aic7892_setup;
235 static ahc_device_setup_t ahc_aic7895_setup;
236 static ahc_device_setup_t ahc_aic7896_setup;
237 static ahc_device_setup_t ahc_aic7899_setup;
238 static ahc_device_setup_t ahc_aha29160C_setup;
239 static ahc_device_setup_t ahc_raid_setup;
240 static ahc_device_setup_t ahc_aha394XX_setup;
241 static ahc_device_setup_t ahc_aha494XX_setup;
242 static ahc_device_setup_t ahc_aha398XX_setup;
243 
244 struct ahc_pci_identity ahc_pci_ident_table [] =
245 {
246 	/* aic7850 based controllers */
247 	{
248 		ID_AHA_2902_04_10_15_20C_30C,
249 		ID_ALL_MASK,
250 		"Adaptec 2902/04/10/15/20C/30C SCSI adapter",
251 		ahc_aic785X_setup
252 	},
253 	/* aic7860 based controllers */
254 	{
255 		ID_AHA_2930CU,
256 		ID_ALL_MASK,
257 		"Adaptec 2930CU SCSI adapter",
258 		ahc_aic7860_setup
259 	},
260 	{
261 		ID_AHA_1480A & ID_DEV_VENDOR_MASK,
262 		ID_DEV_VENDOR_MASK,
263 		"Adaptec 1480A Ultra SCSI adapter",
264 		ahc_apa1480_setup
265 	},
266 	{
267 		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
268 		ID_DEV_VENDOR_MASK,
269 		"Adaptec 2940A Ultra SCSI adapter",
270 		ahc_aic7860_setup
271 	},
272 	{
273 		ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
274 		ID_DEV_VENDOR_MASK,
275 		"Adaptec 2940A/CN Ultra SCSI adapter",
276 		ahc_aic7860_setup
277 	},
278 	{
279 		ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
280 		ID_DEV_VENDOR_MASK,
281 		"Adaptec 2930C Ultra SCSI adapter (VAR)",
282 		ahc_aic7860_setup
283 	},
284 	/* aic7870 based controllers */
285 	{
286 		ID_AHA_2940,
287 		ID_ALL_MASK,
288 		"Adaptec 2940 SCSI adapter",
289 		ahc_aic7870_setup
290 	},
291 	{
292 		ID_AHA_3940,
293 		ID_ALL_MASK,
294 		"Adaptec 3940 SCSI adapter",
295 		ahc_aha394X_setup
296 	},
297 	{
298 		ID_AHA_398X,
299 		ID_ALL_MASK,
300 		"Adaptec 398X SCSI RAID adapter",
301 		ahc_aha398X_setup
302 	},
303 	{
304 		ID_AHA_2944,
305 		ID_ALL_MASK,
306 		"Adaptec 2944 SCSI adapter",
307 		ahc_aic7870_setup
308 	},
309 	{
310 		ID_AHA_3944,
311 		ID_ALL_MASK,
312 		"Adaptec 3944 SCSI adapter",
313 		ahc_aha394X_setup
314 	},
315 	{
316 		ID_AHA_4944,
317 		ID_ALL_MASK,
318 		"Adaptec 4944 SCSI adapter",
319 		ahc_aha494X_setup
320 	},
321 	/* aic7880 based controllers */
322 	{
323 		ID_AHA_2940U & ID_DEV_VENDOR_MASK,
324 		ID_DEV_VENDOR_MASK,
325 		"Adaptec 2940 Ultra SCSI adapter",
326 		ahc_aic7880_setup
327 	},
328 	{
329 		ID_AHA_3940U & ID_DEV_VENDOR_MASK,
330 		ID_DEV_VENDOR_MASK,
331 		"Adaptec 3940 Ultra SCSI adapter",
332 		ahc_aha394XU_setup
333 	},
334 	{
335 		ID_AHA_2944U & ID_DEV_VENDOR_MASK,
336 		ID_DEV_VENDOR_MASK,
337 		"Adaptec 2944 Ultra SCSI adapter",
338 		ahc_aic7880_setup
339 	},
340 	{
341 		ID_AHA_3944U & ID_DEV_VENDOR_MASK,
342 		ID_DEV_VENDOR_MASK,
343 		"Adaptec 3944 Ultra SCSI adapter",
344 		ahc_aha394XU_setup
345 	},
346 	{
347 		ID_AHA_398XU & ID_DEV_VENDOR_MASK,
348 		ID_DEV_VENDOR_MASK,
349 		"Adaptec 398X Ultra SCSI RAID adapter",
350 		ahc_aha398XU_setup
351 	},
352 	{
353 		/*
354 		 * XXX Don't know the slot numbers
355 		 * so we can't identify channels
356 		 */
357 		ID_AHA_4944U & ID_DEV_VENDOR_MASK,
358 		ID_DEV_VENDOR_MASK,
359 		"Adaptec 4944 Ultra SCSI adapter",
360 		ahc_aic7880_setup
361 	},
362 	{
363 		ID_AHA_2930U & ID_DEV_VENDOR_MASK,
364 		ID_DEV_VENDOR_MASK,
365 		"Adaptec 2930 Ultra SCSI adapter",
366 		ahc_aic7880_setup
367 	},
368 	{
369 		ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
370 		ID_DEV_VENDOR_MASK,
371 		"Adaptec 2940 Pro Ultra SCSI adapter",
372 		ahc_aha2940Pro_setup
373 	},
374 	{
375 		ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
376 		ID_DEV_VENDOR_MASK,
377 		"Adaptec 2940/CN Ultra SCSI adapter",
378 		ahc_aic7880_setup
379 	},
380 	/* Ignore all SISL (AAC on MB) based controllers. */
381 	{
382 		ID_9005_SISL_ID,
383 		ID_9005_SISL_MASK,
384 		NULL,
385 		NULL
386 	},
387 	/* aic7890 based controllers */
388 	{
389 		ID_AHA_2930U2,
390 		ID_ALL_MASK,
391 		"Adaptec 2930 Ultra2 SCSI adapter",
392 		ahc_aic7890_setup
393 	},
394 	{
395 		ID_AHA_2940U2B,
396 		ID_ALL_MASK,
397 		"Adaptec 2940B Ultra2 SCSI adapter",
398 		ahc_aic7890_setup
399 	},
400 	{
401 		ID_AHA_2940U2_OEM,
402 		ID_ALL_MASK,
403 		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
404 		ahc_aic7890_setup
405 	},
406 	{
407 		ID_AHA_2940U2,
408 		ID_ALL_MASK,
409 		"Adaptec 2940 Ultra2 SCSI adapter",
410 		ahc_aic7890_setup
411 	},
412 	{
413 		ID_AHA_2950U2B,
414 		ID_ALL_MASK,
415 		"Adaptec 2950 Ultra2 SCSI adapter",
416 		ahc_aic7890_setup
417 	},
418 	{
419 		ID_AIC7890_ARO,
420 		ID_ALL_MASK,
421 		"Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
422 		ahc_aic7890_setup
423 	},
424 	{
425 		ID_AAA_131U2,
426 		ID_ALL_MASK,
427 		"Adaptec AAA-131 Ultra2 RAID adapter",
428 		ahc_aic7890_setup
429 	},
430 	/* aic7892 based controllers */
431 	{
432 		ID_AHA_29160,
433 		ID_ALL_MASK,
434 		"Adaptec 29160 Ultra160 SCSI adapter",
435 		ahc_aic7892_setup
436 	},
437 	{
438 		ID_AHA_29160_CPQ,
439 		ID_ALL_MASK,
440 		"Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
441 		ahc_aic7892_setup
442 	},
443 	{
444 		ID_AHA_29160N,
445 		ID_ALL_MASK,
446 		"Adaptec 29160N Ultra160 SCSI adapter",
447 		ahc_aic7892_setup
448 	},
449 	{
450 		ID_AHA_29160C,
451 		ID_ALL_MASK,
452 		"Adaptec 29160C Ultra160 SCSI adapter",
453 		ahc_aha29160C_setup
454 	},
455 	{
456 		ID_AHA_29160B,
457 		ID_ALL_MASK,
458 		"Adaptec 29160B Ultra160 SCSI adapter",
459 		ahc_aic7892_setup
460 	},
461 	{
462 		ID_AHA_19160B,
463 		ID_ALL_MASK,
464 		"Adaptec 19160B Ultra160 SCSI adapter",
465 		ahc_aic7892_setup
466 	},
467 	{
468 		ID_AIC7892_ARO,
469 		ID_ALL_MASK,
470 		"Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
471 		ahc_aic7892_setup
472 	},
473 	{
474 		ID_AHA_2915_30LP,
475 		ID_ALL_MASK,
476 		"Adaptec 2915/30LP Ultra160 SCSI adapter",
477 		ahc_aic7892_setup
478 	},
479 	/* aic7895 based controllers */
480 	{
481 		ID_AHA_2940U_DUAL,
482 		ID_ALL_MASK,
483 		"Adaptec 2940/DUAL Ultra SCSI adapter",
484 		ahc_aic7895_setup
485 	},
486 	{
487 		ID_AHA_3940AU,
488 		ID_ALL_MASK,
489 		"Adaptec 3940A Ultra SCSI adapter",
490 		ahc_aic7895_setup
491 	},
492 	{
493 		ID_AHA_3944AU,
494 		ID_ALL_MASK,
495 		"Adaptec 3944A Ultra SCSI adapter",
496 		ahc_aic7895_setup
497 	},
498 	{
499 		ID_AIC7895_ARO,
500 		ID_AIC7895_ARO_MASK,
501 		"Adaptec aic7895 Ultra SCSI adapter (ARO)",
502 		ahc_aic7895_setup
503 	},
504 	/* aic7896/97 based controllers */
505 	{
506 		ID_AHA_3950U2B_0,
507 		ID_ALL_MASK,
508 		"Adaptec 3950B Ultra2 SCSI adapter",
509 		ahc_aic7896_setup
510 	},
511 	{
512 		ID_AHA_3950U2B_1,
513 		ID_ALL_MASK,
514 		"Adaptec 3950B Ultra2 SCSI adapter",
515 		ahc_aic7896_setup
516 	},
517 	{
518 		ID_AHA_3950U2D_0,
519 		ID_ALL_MASK,
520 		"Adaptec 3950D Ultra2 SCSI adapter",
521 		ahc_aic7896_setup
522 	},
523 	{
524 		ID_AHA_3950U2D_1,
525 		ID_ALL_MASK,
526 		"Adaptec 3950D Ultra2 SCSI adapter",
527 		ahc_aic7896_setup
528 	},
529 	{
530 		ID_AIC7896_ARO,
531 		ID_ALL_MASK,
532 		"Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
533 		ahc_aic7896_setup
534 	},
535 	/* aic7899 based controllers */
536 	{
537 		ID_AHA_3960D,
538 		ID_ALL_MASK,
539 		"Adaptec 3960D Ultra160 SCSI adapter",
540 		ahc_aic7899_setup
541 	},
542 	{
543 		ID_AHA_3960D_CPQ,
544 		ID_ALL_MASK,
545 		"Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
546 		ahc_aic7899_setup
547 	},
548 	{
549 		ID_AIC7899_ARO,
550 		ID_ALL_MASK,
551 		"Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
552 		ahc_aic7899_setup
553 	},
554 	/* Generic chip probes for devices we don't know 'exactly' */
555 	{
556 		ID_AIC7850 & ID_DEV_VENDOR_MASK,
557 		ID_DEV_VENDOR_MASK,
558 		"Adaptec aic7850 SCSI adapter",
559 		ahc_aic785X_setup
560 	},
561 	{
562 		ID_AIC7855 & ID_DEV_VENDOR_MASK,
563 		ID_DEV_VENDOR_MASK,
564 		"Adaptec aic7855 SCSI adapter",
565 		ahc_aic785X_setup
566 	},
567 	{
568 		ID_AIC7859 & ID_DEV_VENDOR_MASK,
569 		ID_DEV_VENDOR_MASK,
570 		"Adaptec aic7859 SCSI adapter",
571 		ahc_aic7860_setup
572 	},
573 	{
574 		ID_AIC7860 & ID_DEV_VENDOR_MASK,
575 		ID_DEV_VENDOR_MASK,
576 		"Adaptec aic7860 Ultra SCSI adapter",
577 		ahc_aic7860_setup
578 	},
579 	{
580 		ID_AIC7870 & ID_DEV_VENDOR_MASK,
581 		ID_DEV_VENDOR_MASK,
582 		"Adaptec aic7870 SCSI adapter",
583 		ahc_aic7870_setup
584 	},
585 	{
586 		ID_AIC7880 & ID_DEV_VENDOR_MASK,
587 		ID_DEV_VENDOR_MASK,
588 		"Adaptec aic7880 Ultra SCSI adapter",
589 		ahc_aic7880_setup
590 	},
591 	{
592 		ID_AIC7890 & ID_9005_GENERIC_MASK,
593 		ID_9005_GENERIC_MASK,
594 		"Adaptec aic7890/91 Ultra2 SCSI adapter",
595 		ahc_aic7890_setup
596 	},
597 	{
598 		ID_AIC7892 & ID_9005_GENERIC_MASK,
599 		ID_9005_GENERIC_MASK,
600 		"Adaptec aic7892 Ultra160 SCSI adapter",
601 		ahc_aic7892_setup
602 	},
603 	{
604 		ID_AIC7895 & ID_DEV_VENDOR_MASK,
605 		ID_DEV_VENDOR_MASK,
606 		"Adaptec aic7895 Ultra SCSI adapter",
607 		ahc_aic7895_setup
608 	},
609 	{
610 		ID_AIC7896 & ID_9005_GENERIC_MASK,
611 		ID_9005_GENERIC_MASK,
612 		"Adaptec aic7896/97 Ultra2 SCSI adapter",
613 		ahc_aic7896_setup
614 	},
615 	{
616 		ID_AIC7899 & ID_9005_GENERIC_MASK,
617 		ID_9005_GENERIC_MASK,
618 		"Adaptec aic7899 Ultra160 SCSI adapter",
619 		ahc_aic7899_setup
620 	},
621 	{
622 		ID_AIC7810 & ID_DEV_VENDOR_MASK,
623 		ID_DEV_VENDOR_MASK,
624 		"Adaptec aic7810 RAID memory controller",
625 		ahc_raid_setup
626 	},
627 	{
628 		ID_AIC7815 & ID_DEV_VENDOR_MASK,
629 		ID_DEV_VENDOR_MASK,
630 		"Adaptec aic7815 RAID memory controller",
631 		ahc_raid_setup
632 	}
633 };
634 
635 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
636 
637 #define AHC_394X_SLOT_CHANNEL_A	4
638 #define AHC_394X_SLOT_CHANNEL_B	5
639 
640 #define AHC_398X_SLOT_CHANNEL_A	4
641 #define AHC_398X_SLOT_CHANNEL_B	8
642 #define AHC_398X_SLOT_CHANNEL_C	12
643 
644 #define AHC_494X_SLOT_CHANNEL_A	4
645 #define AHC_494X_SLOT_CHANNEL_B	5
646 #define AHC_494X_SLOT_CHANNEL_C	6
647 #define AHC_494X_SLOT_CHANNEL_D	7
648 
649 #define	DEVCONFIG		0x40
650 #define		PCIERRGENDIS	0x80000000ul
651 #define		SCBSIZE32	0x00010000ul	/* aic789X only */
652 #define		REXTVALID	0x00001000ul	/* ultra cards only */
653 #define		MPORTMODE	0x00000400ul	/* aic7870+ only */
654 #define		RAMPSM		0x00000200ul	/* aic7870+ only */
655 #define		VOLSENSE	0x00000100ul
656 #define		PCI64BIT	0x00000080ul	/* 64Bit PCI bus (Ultra2 Only)*/
657 #define		SCBRAMSEL	0x00000080ul
658 #define		MRDCEN		0x00000040ul
659 #define		EXTSCBTIME	0x00000020ul	/* aic7870 only */
660 #define		EXTSCBPEN	0x00000010ul	/* aic7870 only */
661 #define		BERREN		0x00000008ul
662 #define		DACEN		0x00000004ul
663 #define		STPWLEVEL	0x00000002ul
664 #define		DIFACTNEGEN	0x00000001ul	/* aic7870 only */
665 
666 #define	CSIZE_LATTIME		0x0c
667 #define		CACHESIZE	0x0000003ful	/* only 5 bits */
668 #define		LATTIME		0x0000ff00ul
669 
670 /* PCI STATUS definitions */
671 #define	DPE	0x80
672 #define SSE	0x40
673 #define	RMA	0x20
674 #define	RTA	0x10
675 #define STA	0x08
676 #define DPR	0x01
677 
678 static int ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
679 				     uint16_t subdevice, uint16_t subvendor);
680 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
681 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
682 				  int pcheck, int fast, int large);
683 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
684 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
685 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
686 				 struct seeprom_config *sc);
687 static void configure_termination(struct ahc_softc *ahc,
688 				  struct seeprom_descriptor *sd,
689 				  u_int adapter_control,
690 	 			  u_int *sxfrctl1);
691 
692 static void ahc_new_term_detect(struct ahc_softc *ahc,
693 				int *enableSEC_low,
694 				int *enableSEC_high,
695 				int *enablePRI_low,
696 				int *enablePRI_high,
697 				int *eeprom_present);
698 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
699 				 int *internal68_present,
700 				 int *externalcable_present,
701 				 int *eeprom_present);
702 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
703 				 int *externalcable_present,
704 				 int *eeprom_present);
705 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
706 static uint8_t read_brdctl(struct ahc_softc *ahc);
707 static void ahc_pci_intr(struct ahc_softc *ahc);
708 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
709 static int  ahc_pci_suspend(struct ahc_softc *ahc);
710 static int  ahc_pci_resume(struct ahc_softc *ahc);
711 
712 static int
713 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
714 			  uint16_t subdevice, uint16_t subvendor)
715 {
716 	int result;
717 
718 	/* Default to invalid. */
719 	result = 0;
720 	if (vendor == 0x9005
721 	 && subvendor == 0x9005
722          && subdevice != device
723          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
724 		switch (SUBID_9005_TYPE(subdevice)) {
725 		case SUBID_9005_TYPE_MB:
726 			break;
727 		case SUBID_9005_TYPE_CARD:
728 		case SUBID_9005_TYPE_LCCARD:
729 			/*
730 			 * Currently only trust Adaptec cards to
731 			 * get the sub device info correct.
732 			 */
733 			if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
734 				result = 1;
735 			break;
736 		case SUBID_9005_TYPE_RAID:
737 			break;
738 		default:
739 			break;
740 		}
741 	}
742 	return (result);
743 }
744 
745 struct ahc_pci_identity *
746 ahc_find_pci_device(aic_dev_softc_t pci)
747 {
748 	uint64_t  full_id;
749 	uint16_t  device;
750 	uint16_t  vendor;
751 	uint16_t  subdevice;
752 	uint16_t  subvendor;
753 	struct	  ahc_pci_identity *entry;
754 	u_int	  i;
755 
756 	vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
757 	device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
758 	subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
759 	subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
760 	full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
761 
762 	/*
763 	 * If the second function is not hooked up, ignore it.
764 	 * Unfortunately, not all MB vendors implement the
765 	 * subdevice ID as per the Adaptec spec, so do our best
766 	 * to sanity check it prior to accepting the subdevice
767 	 * ID as valid.
768 	 */
769 	if (aic_get_pci_function(pci) > 0
770 	 && ahc_9005_subdevinfo_valid(device, vendor, subdevice, subvendor)
771 	 && SUBID_9005_MFUNCENB(subdevice) == 0)
772 		return (NULL);
773 
774 	for (i = 0; i < ahc_num_pci_devs; i++) {
775 		entry = &ahc_pci_ident_table[i];
776 		if (entry->full_id == (full_id & entry->id_mask)) {
777 			/* Honor exclusion entries. */
778 			if (entry->name == NULL)
779 				return (NULL);
780 			return (entry);
781 		}
782 	}
783 	return (NULL);
784 }
785 
786 int
787 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
788 {
789 	u_int	 command;
790 	u_int	 our_id;
791 	u_int	 sxfrctl1;
792 	u_int	 scsiseq;
793 	u_int	 dscommand0;
794 	uint32_t devconfig;
795 	int	 error;
796 	uint8_t	 sblkctl;
797 
798 	our_id = 0;
799 	error = entry->setup(ahc);
800 	if (error != 0)
801 		return (error);
802 	ahc->chip |= AHC_PCI;
803 	ahc->description = entry->name;
804 
805 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
806 
807 	error = ahc_pci_map_registers(ahc);
808 	if (error != 0)
809 		return (error);
810 
811 	/*
812 	 * Before we continue probing the card, ensure that
813 	 * its interrupts are *disabled*.  We don't want
814 	 * a misstep to hang the machine in an interrupt
815 	 * storm.
816 	 */
817 	ahc_intr_enable(ahc, FALSE);
818 
819 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
820 
821 	/*
822 	 * If we need to support high memory, enable dual
823 	 * address cycles.  This bit must be set to enable
824 	 * high address bit generation even if we are on a
825 	 * 64bit bus (PCI64BIT set in devconfig).
826 	 */
827 	if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
828 		if (bootverbose)
829 			printf("%s: Enabling 39Bit Addressing\n",
830 			       ahc_name(ahc));
831 		devconfig |= DACEN;
832 	}
833 
834 	/* Ensure that pci error generation, a test feature, is disabled. */
835 	devconfig |= PCIERRGENDIS;
836 
837 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
838 
839 	/* Ensure busmastering is enabled */
840 	command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
841 	command |= PCIM_CMD_BUSMASTEREN;
842 
843 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
844 
845 	/* On all PCI adapters, we allow SCB paging */
846 	ahc->flags |= AHC_PAGESCBS;
847 
848 	error = ahc_softc_init(ahc);
849 	if (error != 0)
850 		return (error);
851 
852 	/*
853 	 * Disable PCI parity error checking.  Users typically
854 	 * do this to work around broken PCI chipsets that get
855 	 * the parity timing wrong and thus generate lots of spurious
856 	 * errors.  The chip only allows us to disable *all* parity
857 	 * error reporting when doing this, so CIO bus, scb ram, and
858 	 * scratch ram parity errors will be ignored too.
859 	 */
860 	if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
861 		ahc->seqctl |= FAILDIS;
862 
863 	ahc->bus_intr = ahc_pci_intr;
864 	ahc->bus_chip_init = ahc_pci_chip_init;
865 	ahc->bus_suspend = ahc_pci_suspend;
866 	ahc->bus_resume = ahc_pci_resume;
867 
868 	/* Remember how the card was setup in case there is no SEEPROM */
869 	if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
870 		ahc_pause(ahc);
871 		if ((ahc->features & AHC_ULTRA2) != 0)
872 			our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
873 		else
874 			our_id = ahc_inb(ahc, SCSIID) & OID;
875 		sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
876 		scsiseq = ahc_inb(ahc, SCSISEQ);
877 	} else {
878 		sxfrctl1 = STPWEN;
879 		our_id = 7;
880 		scsiseq = 0;
881 	}
882 
883 	error = ahc_reset(ahc, /*reinit*/FALSE);
884 	if (error != 0)
885 		return (ENXIO);
886 
887 	if ((ahc->features & AHC_DT) != 0) {
888 		u_int sfunct;
889 
890 		/* Perform ALT-Mode Setup */
891 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
892 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
893 		ahc_outb(ahc, OPTIONMODE,
894 			 OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
895 		ahc_outb(ahc, SFUNCT, sfunct);
896 
897 		/* Normal mode setup */
898 		ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
899 					  |TARGCRCENDEN);
900 	}
901 
902 	dscommand0 = ahc_inb(ahc, DSCOMMAND0);
903 	dscommand0 |= MPARCKEN|CACHETHEN;
904 	if ((ahc->features & AHC_ULTRA2) != 0) {
905 		/*
906 		 * DPARCKEN doesn't work correctly on
907 		 * some MBs so don't use it.
908 		 */
909 		dscommand0 &= ~DPARCKEN;
910 	}
911 
912 	/*
913 	 * Handle chips that must have cache line
914 	 * streaming (dis/en)abled.
915 	 */
916 	if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
917 		dscommand0 |= CACHETHEN;
918 
919 	if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
920 		dscommand0 &= ~CACHETHEN;
921 
922 	ahc_outb(ahc, DSCOMMAND0, dscommand0);
923 
924 	ahc->pci_cachesize =
925 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
926 				/*bytes*/1) & CACHESIZE;
927 	ahc->pci_cachesize *= 4;
928 
929 	if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
930 	 && ahc->pci_cachesize == 4) {
931 		aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
932 				     0, /*bytes*/1);
933 		ahc->pci_cachesize = 0;
934 	}
935 
936 	/*
937 	 * We cannot perform ULTRA speeds without the presence
938 	 * of the external precision resistor.
939 	 */
940 	if ((ahc->features & AHC_ULTRA) != 0) {
941 		uint32_t devconfig;
942 
943 		devconfig = aic_pci_read_config(ahc->dev_softc,
944 						DEVCONFIG, /*bytes*/4);
945 		if ((devconfig & REXTVALID) == 0)
946 			ahc->features &= ~AHC_ULTRA;
947 	}
948 
949 	/* See if we have a SEEPROM and perform auto-term */
950 	check_extport(ahc, &sxfrctl1);
951 
952 	/*
953 	 * Take the LED out of diagnostic mode
954 	 */
955 	sblkctl = ahc_inb(ahc, SBLKCTL);
956 	ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
957 
958 	if ((ahc->features & AHC_ULTRA2) != 0) {
959 		ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
960 	} else {
961 		ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
962 	}
963 
964 	if (ahc->flags & AHC_USEDEFAULTS) {
965 		/*
966 		 * PCI Adapter default setup
967 		 * Should only be used if the adapter does not have
968 		 * a SEEPROM.
969 		 */
970 		/* See if someone else set us up already */
971 		if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
972 		 && scsiseq != 0) {
973 			printf("%s: Using left over BIOS settings\n",
974 				ahc_name(ahc));
975 			ahc->flags &= ~AHC_USEDEFAULTS;
976 			ahc->flags |= AHC_BIOS_ENABLED;
977 		} else {
978 			/*
979 			 * Assume only one connector and always turn
980 			 * on termination.
981 			 */
982  			our_id = 0x07;
983 			sxfrctl1 = STPWEN;
984 		}
985 		ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
986 
987 		ahc->our_id = our_id;
988 	}
989 
990 	/*
991 	 * Take a look to see if we have external SRAM.
992 	 * We currently do not attempt to use SRAM that is
993 	 * shared among multiple controllers.
994 	 */
995 	ahc_probe_ext_scbram(ahc);
996 
997 	/*
998 	 * Record our termination setting for the
999 	 * generic initialization routine.
1000 	 */
1001 	if ((sxfrctl1 & STPWEN) != 0)
1002 		ahc->flags |= AHC_TERM_ENB_A;
1003 
1004 	/*
1005 	 * Save chip register configuration data for chip resets
1006 	 * that occur during runtime and resume events.
1007 	 */
1008 	ahc->bus_softc.pci_softc.devconfig =
1009 	    aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1010 	ahc->bus_softc.pci_softc.command =
1011 	    aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
1012 	ahc->bus_softc.pci_softc.csize_lattime =
1013 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
1014 	ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1015 	ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
1016 	if ((ahc->features & AHC_DT) != 0) {
1017 		u_int sfunct;
1018 
1019 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
1020 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
1021 		ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
1022 		ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
1023 		ahc_outb(ahc, SFUNCT, sfunct);
1024 		ahc->bus_softc.pci_softc.crccontrol1 =
1025 		    ahc_inb(ahc, CRCCONTROL1);
1026 	}
1027 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
1028 		ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
1029 
1030 	if ((ahc->features & AHC_ULTRA2) != 0)
1031 		ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
1032 
1033 	/* Core initialization */
1034 	error = ahc_init(ahc);
1035 	if (error != 0)
1036 		return (error);
1037 
1038 	/*
1039 	 * Allow interrupts now that we are completely setup.
1040 	 */
1041 	error = ahc_pci_map_int(ahc);
1042 	if (error != 0)
1043 		return (error);
1044 
1045 	ahc_lock(ahc);
1046 	/*
1047 	 * Link this softc in with all other ahc instances.
1048 	 */
1049 	ahc_softc_insert(ahc);
1050 	ahc_unlock(ahc);
1051 	return (0);
1052 }
1053 
1054 /*
1055  * Test for the presence of external sram in an
1056  * "unshared" configuration.
1057  */
1058 static int
1059 ahc_ext_scbram_present(struct ahc_softc *ahc)
1060 {
1061 	u_int chip;
1062 	int ramps;
1063 	int single_user;
1064 	uint32_t devconfig;
1065 
1066 	chip = ahc->chip & AHC_CHIPID_MASK;
1067 	devconfig = aic_pci_read_config(ahc->dev_softc,
1068 					DEVCONFIG, /*bytes*/4);
1069 	single_user = (devconfig & MPORTMODE) != 0;
1070 
1071 	if ((ahc->features & AHC_ULTRA2) != 0)
1072 		ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
1073 	else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1074 		/*
1075 		 * External SCBRAM arbitration is flakey
1076 		 * on these chips.  Unfortunately this means
1077 		 * we don't use the extra SCB ram space on the
1078 		 * 3940AUW.
1079 		 */
1080 		ramps = 0;
1081 	else if (chip >= AHC_AIC7870)
1082 		ramps = (devconfig & RAMPSM) != 0;
1083 	else
1084 		ramps = 0;
1085 
1086 	if (ramps && single_user)
1087 		return (1);
1088 	return (0);
1089 }
1090 
1091 /*
1092  * Enable external scbram.
1093  */
1094 static void
1095 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1096 		  int fast, int large)
1097 {
1098 	uint32_t devconfig;
1099 
1100 	if (ahc->features & AHC_MULTI_FUNC) {
1101 		/*
1102 		 * Set the SCB Base addr (highest address bit)
1103 		 * depending on which channel we are.
1104 		 */
1105 		ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
1106 	}
1107 
1108 	ahc->flags &= ~AHC_LSCBS_ENABLED;
1109 	if (large)
1110 		ahc->flags |= AHC_LSCBS_ENABLED;
1111 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1112 	if ((ahc->features & AHC_ULTRA2) != 0) {
1113 		u_int dscommand0;
1114 
1115 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1116 		if (enable)
1117 			dscommand0 &= ~INTSCBRAMSEL;
1118 		else
1119 			dscommand0 |= INTSCBRAMSEL;
1120 		if (large)
1121 			dscommand0 &= ~USCBSIZE32;
1122 		else
1123 			dscommand0 |= USCBSIZE32;
1124 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
1125 	} else {
1126 		if (fast)
1127 			devconfig &= ~EXTSCBTIME;
1128 		else
1129 			devconfig |= EXTSCBTIME;
1130 		if (enable)
1131 			devconfig &= ~SCBRAMSEL;
1132 		else
1133 			devconfig |= SCBRAMSEL;
1134 		if (large)
1135 			devconfig &= ~SCBSIZE32;
1136 		else
1137 			devconfig |= SCBSIZE32;
1138 	}
1139 	if (pcheck)
1140 		devconfig |= EXTSCBPEN;
1141 	else
1142 		devconfig &= ~EXTSCBPEN;
1143 
1144 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1145 }
1146 
1147 /*
1148  * Take a look to see if we have external SRAM.
1149  * We currently do not attempt to use SRAM that is
1150  * shared among multiple controllers.
1151  */
1152 static void
1153 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1154 {
1155 	int num_scbs;
1156 	int test_num_scbs;
1157 	int enable;
1158 	int pcheck;
1159 	int fast;
1160 	int large;
1161 
1162 	enable = FALSE;
1163 	pcheck = FALSE;
1164 	fast = FALSE;
1165 	large = FALSE;
1166 	num_scbs = 0;
1167 
1168 	if (ahc_ext_scbram_present(ahc) == 0)
1169 		goto done;
1170 
1171 	/*
1172 	 * Probe for the best parameters to use.
1173 	 */
1174 	ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1175 	num_scbs = ahc_probe_scbs(ahc);
1176 	if (num_scbs == 0) {
1177 		/* The SRAM wasn't really present. */
1178 		goto done;
1179 	}
1180 	enable = TRUE;
1181 
1182 	/*
1183 	 * Clear any outstanding parity error
1184 	 * and ensure that parity error reporting
1185 	 * is enabled.
1186 	 */
1187 	ahc_outb(ahc, SEQCTL, 0);
1188 	ahc_outb(ahc, CLRINT, CLRPARERR);
1189 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1190 
1191 	/* Now see if we can do parity */
1192 	ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1193 	num_scbs = ahc_probe_scbs(ahc);
1194 	if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1195 	 || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1196 		pcheck = TRUE;
1197 
1198 	/* Clear any resulting parity error */
1199 	ahc_outb(ahc, CLRINT, CLRPARERR);
1200 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1201 
1202 	/* Now see if we can do fast timing */
1203 	ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1204 	test_num_scbs = ahc_probe_scbs(ahc);
1205 	if (test_num_scbs == num_scbs
1206 	 && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1207 	  || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1208 		fast = TRUE;
1209 
1210 	/*
1211 	 * See if we can use large SCBs and still maintain
1212 	 * the same overall count of SCBs.
1213 	 */
1214 	if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1215 		ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1216 		test_num_scbs = ahc_probe_scbs(ahc);
1217 		if (test_num_scbs >= num_scbs) {
1218 			large = TRUE;
1219 			num_scbs = test_num_scbs;
1220 	 		if (num_scbs >= 64) {
1221 				/*
1222 				 * We have enough space to move the
1223 				 * "busy targets table" into SCB space
1224 				 * and make it qualify all the way to the
1225 				 * lun level.
1226 				 */
1227 				ahc->flags |= AHC_SCB_BTT;
1228 			}
1229 		}
1230 	}
1231 done:
1232 	/*
1233 	 * Disable parity error reporting until we
1234 	 * can load instruction ram.
1235 	 */
1236 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1237 	/* Clear any latched parity error */
1238 	ahc_outb(ahc, CLRINT, CLRPARERR);
1239 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1240 	if (bootverbose && enable) {
1241 		printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1242 		       ahc_name(ahc), fast ? "fast" : "slow",
1243 		       pcheck ? ", parity checking enabled" : "",
1244 		       large ? 64 : 32);
1245 	}
1246 	ahc_scbram_config(ahc, enable, pcheck, fast, large);
1247 }
1248 
1249 /*
1250  * Perform some simple tests that should catch situations where
1251  * our registers are invalidly mapped.
1252  */
1253 int
1254 ahc_pci_test_register_access(struct ahc_softc *ahc)
1255 {
1256 	int	 error;
1257 	u_int	 status1;
1258 	uint32_t cmd;
1259 	uint8_t	 hcntrl;
1260 
1261 	error = EIO;
1262 
1263 	/*
1264 	 * Enable PCI error interrupt status, but suppress NMIs
1265 	 * generated by SERR raised due to target aborts.
1266 	 */
1267 	cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1268 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1269 			     cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1270 
1271 	/*
1272 	 * First a simple test to see if any
1273 	 * registers can be read.  Reading
1274 	 * HCNTRL has no side effects and has
1275 	 * at least one bit that is guaranteed to
1276 	 * be zero so it is a good register to
1277 	 * use for this test.
1278 	 */
1279 	hcntrl = ahc_inb(ahc, HCNTRL);
1280 
1281 	if (hcntrl == 0xFF)
1282 		goto fail;
1283 
1284 	if ((hcntrl & CHIPRST) != 0) {
1285 		/*
1286 		 * The chip has not been initialized since
1287 		 * PCI/EISA/VLB bus reset.  Don't trust
1288 		 * "left over BIOS data".
1289 		 */
1290 		ahc->flags |= AHC_NO_BIOS_INIT;
1291 	}
1292 
1293 	/*
1294 	 * Next create a situation where write combining
1295 	 * or read prefetching could be initiated by the
1296 	 * CPU or host bridge.  Our device does not support
1297 	 * either, so look for data corruption and/or flagged
1298 	 * PCI errors.  First pause without causing another
1299 	 * chip reset.
1300 	 */
1301 	hcntrl &= ~CHIPRST;
1302 	ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1303 	while (ahc_is_paused(ahc) == 0)
1304 		;
1305 
1306 	/* Clear any PCI errors that occurred before our driver attached. */
1307 	status1 = aic_pci_read_config(ahc->dev_softc,
1308 				      PCIR_STATUS + 1, /*bytes*/1);
1309 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1310 			     status1, /*bytes*/1);
1311 	ahc_outb(ahc, CLRINT, CLRPARERR);
1312 
1313 	ahc_outb(ahc, SEQCTL, PERRORDIS);
1314 	ahc_outb(ahc, SCBPTR, 0);
1315 	ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1316 	if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1317 		goto fail;
1318 
1319 	status1 = aic_pci_read_config(ahc->dev_softc,
1320 				      PCIR_STATUS + 1, /*bytes*/1);
1321 	if ((status1 & STA) != 0)
1322 		goto fail;
1323 
1324 	error = 0;
1325 
1326 fail:
1327 	/* Silently clear any latched errors. */
1328 	status1 = aic_pci_read_config(ahc->dev_softc,
1329 				      PCIR_STATUS + 1, /*bytes*/1);
1330 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1331 			     status1, /*bytes*/1);
1332 	ahc_outb(ahc, CLRINT, CLRPARERR);
1333 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1334 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1335 	return (error);
1336 }
1337 
1338 /*
1339  * Check the external port logic for a serial eeprom
1340  * and termination/cable detection contrls.
1341  */
1342 static void
1343 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1344 {
1345 	struct	seeprom_descriptor sd;
1346 	struct	seeprom_config *sc;
1347 	int	have_seeprom;
1348 	int	have_autoterm;
1349 
1350 	sd.sd_ahc = ahc;
1351 	sd.sd_control_offset = SEECTL;
1352 	sd.sd_status_offset = SEECTL;
1353 	sd.sd_dataout_offset = SEECTL;
1354 	sc = ahc->seep_config;
1355 
1356 	/*
1357 	 * For some multi-channel devices, the c46 is simply too
1358 	 * small to work.  For the other controller types, we can
1359 	 * get our information from either SEEPROM type.  Set the
1360 	 * type to start our probe with accordingly.
1361 	 */
1362 	if (ahc->flags & AHC_LARGE_SEEPROM)
1363 		sd.sd_chip = C56_66;
1364 	else
1365 		sd.sd_chip = C46;
1366 
1367 	sd.sd_MS = SEEMS;
1368 	sd.sd_RDY = SEERDY;
1369 	sd.sd_CS = SEECS;
1370 	sd.sd_CK = SEECK;
1371 	sd.sd_DO = SEEDO;
1372 	sd.sd_DI = SEEDI;
1373 
1374 	have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1375 	if (have_seeprom) {
1376 		if (bootverbose)
1377 			printf("%s: Reading SEEPROM...", ahc_name(ahc));
1378 
1379 		for (;;) {
1380 			u_int start_addr;
1381 
1382 			start_addr = 32 * (ahc->channel - 'A');
1383 
1384 			have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1385 							start_addr,
1386 							sizeof(*sc)/2);
1387 
1388 			if (have_seeprom)
1389 				have_seeprom = ahc_verify_cksum(sc);
1390 
1391 			if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1392 				if (bootverbose) {
1393 					if (have_seeprom == 0)
1394 						printf ("checksum error\n");
1395 					else
1396 						printf ("done.\n");
1397 				}
1398 				break;
1399 			}
1400 			sd.sd_chip = C56_66;
1401 		}
1402 		ahc_release_seeprom(&sd);
1403 
1404 		/* Remember the SEEPROM type for later */
1405 		if (sd.sd_chip == C56_66)
1406 			ahc->flags |= AHC_LARGE_SEEPROM;
1407 	}
1408 
1409 	if (!have_seeprom) {
1410 		/*
1411 		 * Pull scratch ram settings and treat them as
1412 		 * if they are the contents of an seeprom if
1413 		 * the 'ADPT' signature is found in SCB2.
1414 		 * We manually compose the data as 16bit values
1415 		 * to avoid endian issues.
1416 		 */
1417 		ahc_outb(ahc, SCBPTR, 2);
1418 		if (ahc_inb(ahc, SCB_BASE) == 'A'
1419 		 && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1420 		 && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1421 		 && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1422 			uint16_t *sc_data;
1423 			int	  i;
1424 
1425 			sc_data = (uint16_t *)sc;
1426 			for (i = 0; i < 32; i++, sc_data++) {
1427 				int	j;
1428 
1429 				j = i * 2;
1430 				*sc_data = ahc_inb(ahc, SRAM_BASE + j)
1431 					 | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1432 			}
1433 			have_seeprom = ahc_verify_cksum(sc);
1434 			if (have_seeprom)
1435 				ahc->flags |= AHC_SCB_CONFIG_USED;
1436 		}
1437 		/*
1438 		 * Clear any SCB parity errors in case this data and
1439 		 * its associated parity was not initialized by the BIOS
1440 		 */
1441 		ahc_outb(ahc, CLRINT, CLRPARERR);
1442 		ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1443 	}
1444 
1445 	if (!have_seeprom) {
1446 		if (bootverbose)
1447 			printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1448 		ahc->flags |= AHC_USEDEFAULTS;
1449 		free(ahc->seep_config, M_DEVBUF);
1450 		ahc->seep_config = NULL;
1451 		sc = NULL;
1452 	} else {
1453 		ahc_parse_pci_eeprom(ahc, sc);
1454 	}
1455 
1456 	/*
1457 	 * Cards that have the external logic necessary to talk to
1458 	 * a SEEPROM, are almost certain to have the remaining logic
1459 	 * necessary for auto-termination control.  This assumption
1460 	 * hasn't failed yet...
1461 	 */
1462 	have_autoterm = have_seeprom;
1463 
1464 	/*
1465 	 * Some low-cost chips have SEEPROM and auto-term control built
1466 	 * in, instead of using a GAL.  They can tell us directly
1467 	 * if the termination logic is enabled.
1468 	 */
1469 	if ((ahc->features & AHC_SPIOCAP) != 0) {
1470 		if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1471 			have_autoterm = FALSE;
1472 	}
1473 
1474 	if (have_autoterm) {
1475 		ahc->flags |= AHC_HAS_TERM_LOGIC;
1476 		ahc_acquire_seeprom(ahc, &sd);
1477 		configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1478 		ahc_release_seeprom(&sd);
1479 	} else if (have_seeprom) {
1480 		*sxfrctl1 &= ~STPWEN;
1481 		if ((sc->adapter_control & CFSTERM) != 0)
1482 			*sxfrctl1 |= STPWEN;
1483 		if (bootverbose)
1484 			printf("%s: Low byte termination %sabled\n",
1485 			       ahc_name(ahc),
1486 			       (*sxfrctl1 & STPWEN) ? "en" : "dis");
1487 	}
1488 }
1489 
1490 static void
1491 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1492 {
1493 	/*
1494 	 * Put the data we've collected down into SRAM
1495 	 * where ahc_init will find it.
1496 	 */
1497 	int	 i;
1498 	int	 max_targ = sc->max_targets & CFMAXTARG;
1499 	u_int	 scsi_conf;
1500 	uint16_t discenable;
1501 	uint16_t ultraenb;
1502 
1503 	discenable = 0;
1504 	ultraenb = 0;
1505 	if ((sc->adapter_control & CFULTRAEN) != 0) {
1506 		/*
1507 		 * Determine if this adapter has a "newstyle"
1508 		 * SEEPROM format.
1509 		 */
1510 		for (i = 0; i < max_targ; i++) {
1511 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1512 				ahc->flags |= AHC_NEWEEPROM_FMT;
1513 				break;
1514 			}
1515 		}
1516 	}
1517 
1518 	for (i = 0; i < max_targ; i++) {
1519 		u_int     scsirate;
1520 		uint16_t target_mask;
1521 
1522 		target_mask = 0x01 << i;
1523 		if (sc->device_flags[i] & CFDISC)
1524 			discenable |= target_mask;
1525 		if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1526 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1527 				ultraenb |= target_mask;
1528 		} else if ((sc->adapter_control & CFULTRAEN) != 0) {
1529 			ultraenb |= target_mask;
1530 		}
1531 		if ((sc->device_flags[i] & CFXFER) == 0x04
1532 		 && (ultraenb & target_mask) != 0) {
1533 			/* Treat 10MHz as a non-ultra speed */
1534 			sc->device_flags[i] &= ~CFXFER;
1535 		 	ultraenb &= ~target_mask;
1536 		}
1537 		if ((ahc->features & AHC_ULTRA2) != 0) {
1538 			u_int offset;
1539 
1540 			if (sc->device_flags[i] & CFSYNCH)
1541 				offset = MAX_OFFSET_ULTRA2;
1542 			else
1543 				offset = 0;
1544 			ahc_outb(ahc, TARG_OFFSET + i, offset);
1545 
1546 			/*
1547 			 * The ultra enable bits contain the
1548 			 * high bit of the ultra2 sync rate
1549 			 * field.
1550 			 */
1551 			scsirate = (sc->device_flags[i] & CFXFER)
1552 				 | ((ultraenb & target_mask) ? 0x8 : 0x0);
1553 			if (sc->device_flags[i] & CFWIDEB)
1554 				scsirate |= WIDEXFER;
1555 		} else {
1556 			scsirate = (sc->device_flags[i] & CFXFER) << 4;
1557 			if (sc->device_flags[i] & CFSYNCH)
1558 				scsirate |= SOFS;
1559 			if (sc->device_flags[i] & CFWIDEB)
1560 				scsirate |= WIDEXFER;
1561 		}
1562 		ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1563 	}
1564 	ahc->our_id = sc->brtime_id & CFSCSIID;
1565 
1566 	scsi_conf = (ahc->our_id & 0x7);
1567 	if (sc->adapter_control & CFSPARITY)
1568 		scsi_conf |= ENSPCHK;
1569 	if (sc->adapter_control & CFRESETB)
1570 		scsi_conf |= RESET_SCSI;
1571 
1572 	ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1573 
1574 	if (sc->bios_control & CFEXTEND)
1575 		ahc->flags |= AHC_EXTENDED_TRANS_A;
1576 
1577 	if (sc->bios_control & CFBIOSEN)
1578 		ahc->flags |= AHC_BIOS_ENABLED;
1579 	if (ahc->features & AHC_ULTRA
1580 	 && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1581 		/* Should we enable Ultra mode? */
1582 		if (!(sc->adapter_control & CFULTRAEN))
1583 			/* Treat us as a non-ultra card */
1584 			ultraenb = 0;
1585 	}
1586 
1587 	if (sc->signature == CFSIGNATURE
1588 	 || sc->signature == CFSIGNATURE2) {
1589 		uint32_t devconfig;
1590 
1591 		/* Honor the STPWLEVEL settings */
1592 		devconfig = aic_pci_read_config(ahc->dev_softc,
1593 						DEVCONFIG, /*bytes*/4);
1594 		devconfig &= ~STPWLEVEL;
1595 		if ((sc->bios_control & CFSTPWLEVEL) != 0)
1596 			devconfig |= STPWLEVEL;
1597 		aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
1598 				     devconfig, /*bytes*/4);
1599 	}
1600 	/* Set SCSICONF info */
1601 	ahc_outb(ahc, SCSICONF, scsi_conf);
1602 	ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1603 	ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1604 	ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1605 	ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1606 }
1607 
1608 static void
1609 configure_termination(struct ahc_softc *ahc,
1610 		      struct seeprom_descriptor *sd,
1611 		      u_int adapter_control,
1612 		      u_int *sxfrctl1)
1613 {
1614 	uint8_t brddat;
1615 
1616 	brddat = 0;
1617 
1618 	/*
1619 	 * Update the settings in sxfrctl1 to match the
1620 	 * termination settings
1621 	 */
1622 	*sxfrctl1 = 0;
1623 
1624 	/*
1625 	 * SEECS must be on for the GALS to latch
1626 	 * the data properly.  Be sure to leave MS
1627 	 * on or we will release the seeprom.
1628 	 */
1629 	SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1630 	if ((adapter_control & CFAUTOTERM) != 0
1631 	 || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1632 		int internal50_present;
1633 		int internal68_present;
1634 		int externalcable_present;
1635 		int eeprom_present;
1636 		int enableSEC_low;
1637 		int enableSEC_high;
1638 		int enablePRI_low;
1639 		int enablePRI_high;
1640 		int sum;
1641 
1642 		enableSEC_low = 0;
1643 		enableSEC_high = 0;
1644 		enablePRI_low = 0;
1645 		enablePRI_high = 0;
1646 		if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1647 			ahc_new_term_detect(ahc, &enableSEC_low,
1648 					    &enableSEC_high,
1649 					    &enablePRI_low,
1650 					    &enablePRI_high,
1651 					    &eeprom_present);
1652 			if ((adapter_control & CFSEAUTOTERM) == 0) {
1653 				if (bootverbose)
1654 					printf("%s: Manual SE Termination\n",
1655 					       ahc_name(ahc));
1656 				enableSEC_low = (adapter_control & CFSELOWTERM);
1657 				enableSEC_high =
1658 				    (adapter_control & CFSEHIGHTERM);
1659 			}
1660 			if ((adapter_control & CFAUTOTERM) == 0) {
1661 				if (bootverbose)
1662 					printf("%s: Manual LVD Termination\n",
1663 					       ahc_name(ahc));
1664 				enablePRI_low = (adapter_control & CFSTERM);
1665 				enablePRI_high = (adapter_control & CFWSTERM);
1666 			}
1667 			/* Make the table calculations below happy */
1668 			internal50_present = 0;
1669 			internal68_present = 1;
1670 			externalcable_present = 1;
1671 		} else if ((ahc->features & AHC_SPIOCAP) != 0) {
1672 			aic785X_cable_detect(ahc, &internal50_present,
1673 					     &externalcable_present,
1674 					     &eeprom_present);
1675 			/* Can never support a wide connector. */
1676 			internal68_present = 0;
1677 		} else {
1678 			aic787X_cable_detect(ahc, &internal50_present,
1679 					     &internal68_present,
1680 					     &externalcable_present,
1681 					     &eeprom_present);
1682 		}
1683 
1684 		if ((ahc->features & AHC_WIDE) == 0)
1685 			internal68_present = 0;
1686 
1687 		if (bootverbose
1688 		 && (ahc->features & AHC_ULTRA2) == 0) {
1689 			printf("%s: internal 50 cable %s present",
1690 			       ahc_name(ahc),
1691 			       internal50_present ? "is":"not");
1692 
1693 			if ((ahc->features & AHC_WIDE) != 0)
1694 				printf(", internal 68 cable %s present",
1695 				       internal68_present ? "is":"not");
1696 			printf("\n%s: external cable %s present\n",
1697 			       ahc_name(ahc),
1698 			       externalcable_present ? "is":"not");
1699 		}
1700 		if (bootverbose)
1701 			printf("%s: BIOS eeprom %s present\n",
1702 			       ahc_name(ahc), eeprom_present ? "is" : "not");
1703 
1704 		if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1705 			/*
1706 			 * The 50 pin connector is a separate bus,
1707 			 * so force it to always be terminated.
1708 			 * In the future, perform current sensing
1709 			 * to determine if we are in the middle of
1710 			 * a properly terminated bus.
1711 			 */
1712 			internal50_present = 0;
1713 		}
1714 
1715 		/*
1716 		 * Now set the termination based on what
1717 		 * we found.
1718 		 * Flash Enable = BRDDAT7
1719 		 * Secondary High Term Enable = BRDDAT6
1720 		 * Secondary Low Term Enable = BRDDAT5 (7890)
1721 		 * Primary High Term Enable = BRDDAT4 (7890)
1722 		 */
1723 		if ((ahc->features & AHC_ULTRA2) == 0
1724 		 && (internal50_present != 0)
1725 		 && (internal68_present != 0)
1726 		 && (externalcable_present != 0)) {
1727 			printf("%s: Illegal cable configuration!!. "
1728 			       "Only two connectors on the "
1729 			       "adapter may be used at a "
1730 			       "time!\n", ahc_name(ahc));
1731 
1732 			/*
1733 			 * Pretend there are no cables in the hope
1734 			 * that having all of the termination on
1735 			 * gives us a more stable bus.
1736 			 */
1737 		 	internal50_present = 0;
1738 			internal68_present = 0;
1739 			externalcable_present = 0;
1740 		}
1741 
1742 		if ((ahc->features & AHC_WIDE) != 0
1743 		 && ((externalcable_present == 0)
1744 		  || (internal68_present == 0)
1745 		  || (enableSEC_high != 0))) {
1746 			brddat |= BRDDAT6;
1747 			if (bootverbose) {
1748 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1749 					printf("%s: 68 pin termination "
1750 					       "Enabled\n", ahc_name(ahc));
1751 				else
1752 					printf("%s: %sHigh byte termination "
1753 					       "Enabled\n", ahc_name(ahc),
1754 					       enableSEC_high ? "Secondary "
1755 							      : "");
1756 			}
1757 		}
1758 
1759 		sum = internal50_present + internal68_present
1760 		    + externalcable_present;
1761 		if (sum < 2 || (enableSEC_low != 0)) {
1762 			if ((ahc->features & AHC_ULTRA2) != 0)
1763 				brddat |= BRDDAT5;
1764 			else
1765 				*sxfrctl1 |= STPWEN;
1766 			if (bootverbose) {
1767 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1768 					printf("%s: 50 pin termination "
1769 					       "Enabled\n", ahc_name(ahc));
1770 				else
1771 					printf("%s: %sLow byte termination "
1772 					       "Enabled\n", ahc_name(ahc),
1773 					       enableSEC_low ? "Secondary "
1774 							     : "");
1775 			}
1776 		}
1777 
1778 		if (enablePRI_low != 0) {
1779 			*sxfrctl1 |= STPWEN;
1780 			if (bootverbose)
1781 				printf("%s: Primary Low Byte termination "
1782 				       "Enabled\n", ahc_name(ahc));
1783 		}
1784 
1785 		/*
1786 		 * Setup STPWEN before setting up the rest of
1787 		 * the termination per the tech note on the U160 cards.
1788 		 */
1789 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1790 
1791 		if (enablePRI_high != 0) {
1792 			brddat |= BRDDAT4;
1793 			if (bootverbose)
1794 				printf("%s: Primary High Byte "
1795 				       "termination Enabled\n",
1796 				       ahc_name(ahc));
1797 		}
1798 
1799 		write_brdctl(ahc, brddat);
1800 
1801 	} else {
1802 		if ((adapter_control & CFSTERM) != 0) {
1803 			*sxfrctl1 |= STPWEN;
1804 
1805 			if (bootverbose)
1806 				printf("%s: %sLow byte termination Enabled\n",
1807 				       ahc_name(ahc),
1808 				       (ahc->features & AHC_ULTRA2) ? "Primary "
1809 								    : "");
1810 		}
1811 
1812 		if ((adapter_control & CFWSTERM) != 0
1813 		 && (ahc->features & AHC_WIDE) != 0) {
1814 			brddat |= BRDDAT6;
1815 			if (bootverbose)
1816 				printf("%s: %sHigh byte termination Enabled\n",
1817 				       ahc_name(ahc),
1818 				       (ahc->features & AHC_ULTRA2)
1819 				     ? "Secondary " : "");
1820 		}
1821 
1822 		/*
1823 		 * Setup STPWEN before setting up the rest of
1824 		 * the termination per the tech note on the U160 cards.
1825 		 */
1826 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1827 
1828 		if ((ahc->features & AHC_WIDE) != 0)
1829 			write_brdctl(ahc, brddat);
1830 	}
1831 	SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1832 }
1833 
1834 static void
1835 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1836 		    int *enableSEC_high, int *enablePRI_low,
1837 		    int *enablePRI_high, int *eeprom_present)
1838 {
1839 	uint8_t brdctl;
1840 
1841 	/*
1842 	 * BRDDAT7 = Eeprom
1843 	 * BRDDAT6 = Enable Secondary High Byte termination
1844 	 * BRDDAT5 = Enable Secondary Low Byte termination
1845 	 * BRDDAT4 = Enable Primary high byte termination
1846 	 * BRDDAT3 = Enable Primary low byte termination
1847 	 */
1848 	brdctl = read_brdctl(ahc);
1849 	*eeprom_present = brdctl & BRDDAT7;
1850 	*enableSEC_high = (brdctl & BRDDAT6);
1851 	*enableSEC_low = (brdctl & BRDDAT5);
1852 	*enablePRI_high = (brdctl & BRDDAT4);
1853 	*enablePRI_low = (brdctl & BRDDAT3);
1854 }
1855 
1856 static void
1857 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1858 		     int *internal68_present, int *externalcable_present,
1859 		     int *eeprom_present)
1860 {
1861 	uint8_t brdctl;
1862 
1863 	/*
1864 	 * First read the status of our cables.
1865 	 * Set the rom bank to 0 since the
1866 	 * bank setting serves as a multiplexor
1867 	 * for the cable detection logic.
1868 	 * BRDDAT5 controls the bank switch.
1869 	 */
1870 	write_brdctl(ahc, 0);
1871 
1872 	/*
1873 	 * Now read the state of the internal
1874 	 * connectors.  BRDDAT6 is INT50 and
1875 	 * BRDDAT7 is INT68.
1876 	 */
1877 	brdctl = read_brdctl(ahc);
1878 	*internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1879 	*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1880 
1881 	/*
1882 	 * Set the rom bank to 1 and determine
1883 	 * the other signals.
1884 	 */
1885 	write_brdctl(ahc, BRDDAT5);
1886 
1887 	/*
1888 	 * Now read the state of the external
1889 	 * connectors.  BRDDAT6 is EXT68 and
1890 	 * BRDDAT7 is EPROMPS.
1891 	 */
1892 	brdctl = read_brdctl(ahc);
1893 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1894 	*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1895 }
1896 
1897 static void
1898 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1899 		     int *externalcable_present, int *eeprom_present)
1900 {
1901 	uint8_t brdctl;
1902 	uint8_t spiocap;
1903 
1904 	spiocap = ahc_inb(ahc, SPIOCAP);
1905 	spiocap &= ~SOFTCMDEN;
1906 	spiocap |= EXT_BRDCTL;
1907 	ahc_outb(ahc, SPIOCAP, spiocap);
1908 	ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1909 	ahc_flush_device_writes(ahc);
1910 	aic_delay(500);
1911 	ahc_outb(ahc, BRDCTL, 0);
1912 	ahc_flush_device_writes(ahc);
1913 	aic_delay(500);
1914 	brdctl = ahc_inb(ahc, BRDCTL);
1915 	*internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1916 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1917 	*eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1918 }
1919 
1920 int
1921 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1922 {
1923 	int wait;
1924 
1925 	if ((ahc->features & AHC_SPIOCAP) != 0
1926 	 && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1927 		return (0);
1928 
1929 	/*
1930 	 * Request access of the memory port.  When access is
1931 	 * granted, SEERDY will go high.  We use a 1 second
1932 	 * timeout which should be near 1 second more than
1933 	 * is needed.  Reason: after the chip reset, there
1934 	 * should be no contention.
1935 	 */
1936 	SEEPROM_OUTB(sd, sd->sd_MS);
1937 	wait = 1000;  /* 1 second timeout in msec */
1938 	while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1939 		aic_delay(1000);  /* delay 1 msec */
1940 	}
1941 	if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1942 		SEEPROM_OUTB(sd, 0);
1943 		return (0);
1944 	}
1945 	return(1);
1946 }
1947 
1948 void
1949 ahc_release_seeprom(struct seeprom_descriptor *sd)
1950 {
1951 	/* Release access to the memory port and the serial EEPROM. */
1952 	SEEPROM_OUTB(sd, 0);
1953 }
1954 
1955 static void
1956 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1957 {
1958 	uint8_t brdctl;
1959 
1960 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1961 		brdctl = BRDSTB;
1962 	 	if (ahc->channel == 'B')
1963 			brdctl |= BRDCS;
1964 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1965 		brdctl = 0;
1966 	} else {
1967 		brdctl = BRDSTB|BRDCS;
1968 	}
1969 	ahc_outb(ahc, BRDCTL, brdctl);
1970 	ahc_flush_device_writes(ahc);
1971 	brdctl |= value;
1972 	ahc_outb(ahc, BRDCTL, brdctl);
1973 	ahc_flush_device_writes(ahc);
1974 	if ((ahc->features & AHC_ULTRA2) != 0)
1975 		brdctl |= BRDSTB_ULTRA2;
1976 	else
1977 		brdctl &= ~BRDSTB;
1978 	ahc_outb(ahc, BRDCTL, brdctl);
1979 	ahc_flush_device_writes(ahc);
1980 	if ((ahc->features & AHC_ULTRA2) != 0)
1981 		brdctl = 0;
1982 	else
1983 		brdctl &= ~BRDCS;
1984 	ahc_outb(ahc, BRDCTL, brdctl);
1985 }
1986 
1987 static uint8_t
1988 read_brdctl(struct ahc_softc *ahc)
1989 {
1990 	uint8_t brdctl;
1991 	uint8_t value;
1992 
1993 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1994 		brdctl = BRDRW;
1995 	 	if (ahc->channel == 'B')
1996 			brdctl |= BRDCS;
1997 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1998 		brdctl = BRDRW_ULTRA2;
1999 	} else {
2000 		brdctl = BRDRW|BRDCS;
2001 	}
2002 	ahc_outb(ahc, BRDCTL, brdctl);
2003 	ahc_flush_device_writes(ahc);
2004 	value = ahc_inb(ahc, BRDCTL);
2005 	ahc_outb(ahc, BRDCTL, 0);
2006 	return (value);
2007 }
2008 
2009 static void
2010 ahc_pci_intr(struct ahc_softc *ahc)
2011 {
2012 	u_int error;
2013 	u_int status1;
2014 
2015 	error = ahc_inb(ahc, ERROR);
2016 	if ((error & PCIERRSTAT) == 0)
2017 		return;
2018 
2019 	status1 = aic_pci_read_config(ahc->dev_softc,
2020 				      PCIR_STATUS + 1, /*bytes*/1);
2021 
2022 	if ((status1 & ~DPE) != 0
2023 	 || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2024 		printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
2025 		       ahc_name(ahc),
2026 		       ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
2027 	}
2028 
2029 	if (status1 & DPE
2030 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2031 		ahc->pci_target_perr_count++;
2032 		printf("%s: Data Parity Error Detected during address "
2033 		       "or write data phase\n", ahc_name(ahc));
2034 	}
2035 	if (status1 & SSE) {
2036 		printf("%s: Signal System Error Detected\n", ahc_name(ahc));
2037 	}
2038 	if (status1 & RMA) {
2039 		printf("%s: Received a Master Abort\n", ahc_name(ahc));
2040 	}
2041 	if (status1 & RTA) {
2042 		printf("%s: Received a Target Abort\n", ahc_name(ahc));
2043 	}
2044 	if (status1 & STA) {
2045 		printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
2046 	}
2047 	if (status1 & DPR) {
2048 		printf("%s: Data Parity Error has been reported via PERR#\n",
2049 		       ahc_name(ahc));
2050 	}
2051 
2052 	/* Clear latched errors. */
2053 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
2054 			     status1, /*bytes*/1);
2055 
2056 	if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
2057 		printf("%s: Latched PCIERR interrupt with "
2058 		       "no status bits set\n", ahc_name(ahc));
2059 	} else {
2060 		ahc_outb(ahc, CLRINT, CLRPARERR);
2061 	}
2062 
2063 	if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
2064 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2065 		printf(
2066 "%s: WARNING WARNING WARNING WARNING\n"
2067 "%s: Too many PCI parity errors observed as a target.\n"
2068 "%s: Some device on this PCI bus is generating bad parity.\n"
2069 "%s: This is an error *observed by*, not *generated by*, %s.\n"
2070 "%s: PCI parity error checking has been disabled.\n"
2071 "%s: WARNING WARNING WARNING WARNING\n",
2072 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2073 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2074 		       ahc_name(ahc));
2075 		ahc->seqctl |= FAILDIS;
2076 		ahc->flags |= AHC_DISABLE_PCI_PERR;
2077 		ahc_outb(ahc, SEQCTL, ahc->seqctl);
2078 	}
2079 	ahc_unpause(ahc);
2080 }
2081 
2082 static int
2083 ahc_pci_chip_init(struct ahc_softc *ahc)
2084 {
2085 	ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2086 	ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2087 	if ((ahc->features & AHC_DT) != 0) {
2088 		u_int sfunct;
2089 
2090 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2091 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2092 		ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2093 		ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2094 		ahc_outb(ahc, SFUNCT, sfunct);
2095 		ahc_outb(ahc, CRCCONTROL1,
2096 			 ahc->bus_softc.pci_softc.crccontrol1);
2097 	}
2098 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
2099 		ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2100 
2101 	if ((ahc->features & AHC_ULTRA2) != 0)
2102 		ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2103 
2104 	return (ahc_chip_init(ahc));
2105 }
2106 
2107 static int
2108 ahc_pci_suspend(struct ahc_softc *ahc)
2109 {
2110 	return (ahc_suspend(ahc));
2111 }
2112 
2113 static int
2114 ahc_pci_resume(struct ahc_softc *ahc)
2115 {
2116 
2117 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
2118 
2119 	/*
2120 	 * We assume that the OS has restored our register
2121 	 * mappings, etc.  Just update the config space registers
2122 	 * that the OS doesn't know about and rely on our chip
2123 	 * reset handler to handle the rest.
2124 	 */
2125 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
2126 			     ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2127 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2128 			     ahc->bus_softc.pci_softc.command, /*bytes*/1);
2129 	aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2130 			     ahc->bus_softc.pci_softc.csize_lattime,
2131 			     /*bytes*/1);
2132 	if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2133 		struct	seeprom_descriptor sd;
2134 		u_int	sxfrctl1;
2135 
2136 		sd.sd_ahc = ahc;
2137 		sd.sd_control_offset = SEECTL;
2138 		sd.sd_status_offset = SEECTL;
2139 		sd.sd_dataout_offset = SEECTL;
2140 
2141 		ahc_acquire_seeprom(ahc, &sd);
2142 		configure_termination(ahc, &sd,
2143 				      ahc->seep_config->adapter_control,
2144 				      &sxfrctl1);
2145 		ahc_release_seeprom(&sd);
2146 	}
2147 	return (ahc_resume(ahc));
2148 }
2149 
2150 static int
2151 ahc_aic785X_setup(struct ahc_softc *ahc)
2152 {
2153 	aic_dev_softc_t pci;
2154 	uint8_t rev;
2155 
2156 	pci = ahc->dev_softc;
2157 	ahc->channel = 'A';
2158 	ahc->chip = AHC_AIC7850;
2159 	ahc->features = AHC_AIC7850_FE;
2160 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2161 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2162 	if (rev >= 1)
2163 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2164 	ahc->instruction_ram_size = 512;
2165 	return (0);
2166 }
2167 
2168 static int
2169 ahc_aic7860_setup(struct ahc_softc *ahc)
2170 {
2171 	aic_dev_softc_t pci;
2172 	uint8_t rev;
2173 
2174 	pci = ahc->dev_softc;
2175 	ahc->channel = 'A';
2176 	ahc->chip = AHC_AIC7860;
2177 	ahc->features = AHC_AIC7860_FE;
2178 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2179 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2180 	if (rev >= 1)
2181 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2182 	ahc->instruction_ram_size = 512;
2183 	return (0);
2184 }
2185 
2186 static int
2187 ahc_apa1480_setup(struct ahc_softc *ahc)
2188 {
2189 	int error;
2190 
2191 	error = ahc_aic7860_setup(ahc);
2192 	if (error != 0)
2193 		return (error);
2194 	ahc->features |= AHC_REMOVABLE;
2195 	return (0);
2196 }
2197 
2198 static int
2199 ahc_aic7870_setup(struct ahc_softc *ahc)
2200 {
2201 
2202 	ahc->channel = 'A';
2203 	ahc->chip = AHC_AIC7870;
2204 	ahc->features = AHC_AIC7870_FE;
2205 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2206 	ahc->instruction_ram_size = 512;
2207 	return (0);
2208 }
2209 
2210 static int
2211 ahc_aha394X_setup(struct ahc_softc *ahc)
2212 {
2213 	int error;
2214 
2215 	error = ahc_aic7870_setup(ahc);
2216 	if (error == 0)
2217 		error = ahc_aha394XX_setup(ahc);
2218 	return (error);
2219 }
2220 
2221 static int
2222 ahc_aha398X_setup(struct ahc_softc *ahc)
2223 {
2224 	int error;
2225 
2226 	error = ahc_aic7870_setup(ahc);
2227 	if (error == 0)
2228 		error = ahc_aha398XX_setup(ahc);
2229 	return (error);
2230 }
2231 
2232 static int
2233 ahc_aha494X_setup(struct ahc_softc *ahc)
2234 {
2235 	int error;
2236 
2237 	error = ahc_aic7870_setup(ahc);
2238 	if (error == 0)
2239 		error = ahc_aha494XX_setup(ahc);
2240 	return (error);
2241 }
2242 
2243 static int
2244 ahc_aic7880_setup(struct ahc_softc *ahc)
2245 {
2246 	aic_dev_softc_t pci;
2247 	uint8_t rev;
2248 
2249 	pci = ahc->dev_softc;
2250 	ahc->channel = 'A';
2251 	ahc->chip = AHC_AIC7880;
2252 	ahc->features = AHC_AIC7880_FE;
2253 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2254 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2255 	if (rev >= 1) {
2256 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2257 	} else {
2258 		ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2259 	}
2260 	ahc->instruction_ram_size = 512;
2261 	return (0);
2262 }
2263 
2264 static int
2265 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2266 {
2267 
2268 	ahc->flags |= AHC_INT50_SPEEDFLEX;
2269 	return (ahc_aic7880_setup(ahc));
2270 }
2271 
2272 static int
2273 ahc_aha394XU_setup(struct ahc_softc *ahc)
2274 {
2275 	int error;
2276 
2277 	error = ahc_aic7880_setup(ahc);
2278 	if (error == 0)
2279 		error = ahc_aha394XX_setup(ahc);
2280 	return (error);
2281 }
2282 
2283 static int
2284 ahc_aha398XU_setup(struct ahc_softc *ahc)
2285 {
2286 	int error;
2287 
2288 	error = ahc_aic7880_setup(ahc);
2289 	if (error == 0)
2290 		error = ahc_aha398XX_setup(ahc);
2291 	return (error);
2292 }
2293 
2294 static int
2295 ahc_aic7890_setup(struct ahc_softc *ahc)
2296 {
2297 	aic_dev_softc_t pci;
2298 	uint8_t rev;
2299 
2300 	pci = ahc->dev_softc;
2301 	ahc->channel = 'A';
2302 	ahc->chip = AHC_AIC7890;
2303 	ahc->features = AHC_AIC7890_FE;
2304 	ahc->flags |= AHC_NEWEEPROM_FMT;
2305 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2306 	if (rev == 0)
2307 		ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2308 	ahc->instruction_ram_size = 768;
2309 	return (0);
2310 }
2311 
2312 static int
2313 ahc_aic7892_setup(struct ahc_softc *ahc)
2314 {
2315 
2316 	ahc->channel = 'A';
2317 	ahc->chip = AHC_AIC7892;
2318 	ahc->features = AHC_AIC7892_FE;
2319 	ahc->flags |= AHC_NEWEEPROM_FMT;
2320 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2321 	ahc->instruction_ram_size = 1024;
2322 	return (0);
2323 }
2324 
2325 static int
2326 ahc_aic7895_setup(struct ahc_softc *ahc)
2327 {
2328 	aic_dev_softc_t pci;
2329 	uint8_t rev;
2330 
2331 	pci = ahc->dev_softc;
2332 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2333 	/*
2334 	 * The 'C' revision of the aic7895 has a few additional features.
2335 	 */
2336 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2337 	if (rev >= 4) {
2338 		ahc->chip = AHC_AIC7895C;
2339 		ahc->features = AHC_AIC7895C_FE;
2340 	} else  {
2341 		u_int command;
2342 
2343 		ahc->chip = AHC_AIC7895;
2344 		ahc->features = AHC_AIC7895_FE;
2345 
2346 		/*
2347 		 * The BIOS disables the use of MWI transactions
2348 		 * since it does not have the MWI bug work around
2349 		 * we have.  Disabling MWI reduces performance, so
2350 		 * turn it on again.
2351 		 */
2352 		command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2353 		command |= PCIM_CMD_MWRICEN;
2354 		aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2355 		ahc->bugs |= AHC_PCI_MWI_BUG;
2356 	}
2357 	/*
2358 	 * XXX Does CACHETHEN really not work???  What about PCI retry?
2359 	 * on C level chips.  Need to test, but for now, play it safe.
2360 	 */
2361 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2362 		  |  AHC_CACHETHEN_BUG;
2363 
2364 #if 0
2365 	uint32_t devconfig;
2366 
2367 	/*
2368 	 * Cachesize must also be zero due to stray DAC
2369 	 * problem when sitting behind some bridges.
2370 	 */
2371 	aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2372 	devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2373 	devconfig |= MRDCEN;
2374 	aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2375 #endif
2376 	ahc->flags |= AHC_NEWEEPROM_FMT;
2377 	ahc->instruction_ram_size = 512;
2378 	return (0);
2379 }
2380 
2381 static int
2382 ahc_aic7896_setup(struct ahc_softc *ahc)
2383 {
2384 	aic_dev_softc_t pci;
2385 
2386 	pci = ahc->dev_softc;
2387 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2388 	ahc->chip = AHC_AIC7896;
2389 	ahc->features = AHC_AIC7896_FE;
2390 	ahc->flags |= AHC_NEWEEPROM_FMT;
2391 	ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2392 	ahc->instruction_ram_size = 768;
2393 	return (0);
2394 }
2395 
2396 static int
2397 ahc_aic7899_setup(struct ahc_softc *ahc)
2398 {
2399 	aic_dev_softc_t pci;
2400 
2401 	pci = ahc->dev_softc;
2402 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2403 	ahc->chip = AHC_AIC7899;
2404 	ahc->features = AHC_AIC7899_FE;
2405 	ahc->flags |= AHC_NEWEEPROM_FMT;
2406 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2407 	ahc->instruction_ram_size = 1024;
2408 	return (0);
2409 }
2410 
2411 static int
2412 ahc_aha29160C_setup(struct ahc_softc *ahc)
2413 {
2414 	int error;
2415 
2416 	error = ahc_aic7899_setup(ahc);
2417 	if (error != 0)
2418 		return (error);
2419 	ahc->features |= AHC_REMOVABLE;
2420 	return (0);
2421 }
2422 
2423 static int
2424 ahc_raid_setup(struct ahc_softc *ahc)
2425 {
2426 	printf("RAID functionality unsupported\n");
2427 	return (ENXIO);
2428 }
2429 
2430 static int
2431 ahc_aha394XX_setup(struct ahc_softc *ahc)
2432 {
2433 	aic_dev_softc_t pci;
2434 
2435 	pci = ahc->dev_softc;
2436 	switch (aic_get_pci_slot(pci)) {
2437 	case AHC_394X_SLOT_CHANNEL_A:
2438 		ahc->channel = 'A';
2439 		break;
2440 	case AHC_394X_SLOT_CHANNEL_B:
2441 		ahc->channel = 'B';
2442 		break;
2443 	default:
2444 		printf("adapter at unexpected slot %d\n"
2445 		       "unable to map to a channel\n",
2446 		       aic_get_pci_slot(pci));
2447 		ahc->channel = 'A';
2448 	}
2449 	return (0);
2450 }
2451 
2452 static int
2453 ahc_aha398XX_setup(struct ahc_softc *ahc)
2454 {
2455 	aic_dev_softc_t pci;
2456 
2457 	pci = ahc->dev_softc;
2458 	switch (aic_get_pci_slot(pci)) {
2459 	case AHC_398X_SLOT_CHANNEL_A:
2460 		ahc->channel = 'A';
2461 		break;
2462 	case AHC_398X_SLOT_CHANNEL_B:
2463 		ahc->channel = 'B';
2464 		break;
2465 	case AHC_398X_SLOT_CHANNEL_C:
2466 		ahc->channel = 'C';
2467 		break;
2468 	default:
2469 		printf("adapter at unexpected slot %d\n"
2470 		       "unable to map to a channel\n",
2471 		       aic_get_pci_slot(pci));
2472 		ahc->channel = 'A';
2473 		break;
2474 	}
2475 	ahc->flags |= AHC_LARGE_SEEPROM;
2476 	return (0);
2477 }
2478 
2479 static int
2480 ahc_aha494XX_setup(struct ahc_softc *ahc)
2481 {
2482 	aic_dev_softc_t pci;
2483 
2484 	pci = ahc->dev_softc;
2485 	switch (aic_get_pci_slot(pci)) {
2486 	case AHC_494X_SLOT_CHANNEL_A:
2487 		ahc->channel = 'A';
2488 		break;
2489 	case AHC_494X_SLOT_CHANNEL_B:
2490 		ahc->channel = 'B';
2491 		break;
2492 	case AHC_494X_SLOT_CHANNEL_C:
2493 		ahc->channel = 'C';
2494 		break;
2495 	case AHC_494X_SLOT_CHANNEL_D:
2496 		ahc->channel = 'D';
2497 		break;
2498 	default:
2499 		printf("adapter at unexpected slot %d\n"
2500 		       "unable to map to a channel\n",
2501 		       aic_get_pci_slot(pci));
2502 		ahc->channel = 'A';
2503 	}
2504 	ahc->flags |= AHC_LARGE_SEEPROM;
2505 	return (0);
2506 }
2507