xref: /freebsd/sys/dev/aic7xxx/aic7xxx_pci.c (revision 8ef24a0d4b28fe230e20637f56869cc4148cd2ca)
1 /*-
2  * Product specific probe and attach routines for:
3  *      3940, 2940, aic7895, aic7890, aic7880,
4  *	aic7870, aic7860 and aic7850 SCSI controllers
5  *
6  * Copyright (c) 1994-2001 Justin T. Gibbs.
7  * Copyright (c) 2000-2001 Adaptec Inc.
8  * All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions, and the following disclaimer,
15  *    without modification.
16  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
17  *    substantially similar to the "NO WARRANTY" disclaimer below
18  *    ("Disclaimer") and any redistribution must be conditioned upon
19  *    including a substantially similar Disclaimer requirement for further
20  *    binary redistribution.
21  * 3. Neither the names of the above-listed copyright holders nor the names
22  *    of any contributors may be used to endorse or promote products derived
23  *    from this software without specific prior written permission.
24  *
25  * Alternatively, this software may be distributed under the terms of the
26  * GNU General Public License ("GPL") version 2 as published by the Free
27  * Software Foundation.
28  *
29  * NO WARRANTY
30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
31  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
32  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
33  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
34  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
39  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40  * POSSIBILITY OF SUCH DAMAGES.
41  *
42  * $Id: //depot/aic7xxx/aic7xxx/aic7xxx_pci.c#78 $
43  */
44 
45 #ifdef __linux__
46 #include "aic7xxx_osm.h"
47 #include "aic7xxx_inline.h"
48 #include "aic7xxx_93cx6.h"
49 #else
50 #include <sys/cdefs.h>
51 __FBSDID("$FreeBSD$");
52 #include <dev/aic7xxx/aic7xxx_osm.h>
53 #include <dev/aic7xxx/aic7xxx_inline.h>
54 #include <dev/aic7xxx/aic7xxx_93cx6.h>
55 #endif
56 
57 static __inline uint64_t
58 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
59 {
60 	uint64_t id;
61 
62 	id = subvendor
63 	   | (subdevice << 16)
64 	   | ((uint64_t)vendor << 32)
65 	   | ((uint64_t)device << 48);
66 
67 	return (id);
68 }
69 
70 #define ID_ALL_MASK			0xFFFFFFFFFFFFFFFFull
71 #define ID_DEV_VENDOR_MASK		0xFFFFFFFF00000000ull
72 #define ID_9005_GENERIC_MASK		0xFFF0FFFF00000000ull
73 #define ID_9005_SISL_MASK		0x000FFFFF00000000ull
74 #define ID_9005_SISL_ID			0x0005900500000000ull
75 #define ID_AIC7850			0x5078900400000000ull
76 #define ID_AHA_2902_04_10_15_20C_30C	0x5078900478509004ull
77 #define ID_AIC7855			0x5578900400000000ull
78 #define ID_AIC7859			0x3860900400000000ull
79 #define ID_AHA_2930CU			0x3860900438699004ull
80 #define ID_AIC7860			0x6078900400000000ull
81 #define ID_AIC7860C			0x6078900478609004ull
82 #define ID_AHA_1480A			0x6075900400000000ull
83 #define ID_AHA_2940AU_0			0x6178900400000000ull
84 #define ID_AHA_2940AU_1			0x6178900478619004ull
85 #define ID_AHA_2940AU_CN		0x2178900478219004ull
86 #define ID_AHA_2930C_VAR		0x6038900438689004ull
87 
88 #define ID_AIC7870			0x7078900400000000ull
89 #define ID_AHA_2940			0x7178900400000000ull
90 #define ID_AHA_3940			0x7278900400000000ull
91 #define ID_AHA_398X			0x7378900400000000ull
92 #define ID_AHA_2944			0x7478900400000000ull
93 #define ID_AHA_3944			0x7578900400000000ull
94 #define ID_AHA_4944			0x7678900400000000ull
95 
96 #define ID_AIC7880			0x8078900400000000ull
97 #define ID_AIC7880_B			0x8078900478809004ull
98 #define ID_AHA_2940U			0x8178900400000000ull
99 #define ID_AHA_3940U			0x8278900400000000ull
100 #define ID_AHA_2944U			0x8478900400000000ull
101 #define ID_AHA_3944U			0x8578900400000000ull
102 #define ID_AHA_398XU			0x8378900400000000ull
103 #define ID_AHA_4944U			0x8678900400000000ull
104 #define ID_AHA_2940UB			0x8178900478819004ull
105 #define ID_AHA_2930U			0x8878900478889004ull
106 #define ID_AHA_2940U_PRO		0x8778900478879004ull
107 #define ID_AHA_2940U_CN			0x0078900478009004ull
108 
109 #define ID_AIC7895			0x7895900478959004ull
110 #define ID_AIC7895_ARO			0x7890900478939004ull
111 #define ID_AIC7895_ARO_MASK		0xFFF0FFFFFFFFFFFFull
112 #define ID_AHA_2940U_DUAL		0x7895900478919004ull
113 #define ID_AHA_3940AU			0x7895900478929004ull
114 #define ID_AHA_3944AU			0x7895900478949004ull
115 
116 #define ID_AIC7890			0x001F9005000F9005ull
117 #define ID_AIC7890_ARO			0x00139005000F9005ull
118 #define ID_AAA_131U2			0x0013900500039005ull
119 #define ID_AHA_2930U2			0x0011900501819005ull
120 #define ID_AHA_2940U2B			0x00109005A1009005ull
121 #define ID_AHA_2940U2_OEM		0x0010900521809005ull
122 #define ID_AHA_2940U2			0x00109005A1809005ull
123 #define ID_AHA_2950U2B			0x00109005E1009005ull
124 
125 #define ID_AIC7892			0x008F9005FFFF9005ull
126 #define ID_AIC7892_ARO			0x00839005FFFF9005ull
127 #define ID_AHA_29160			0x00809005E2A09005ull
128 #define ID_AHA_29160_CPQ		0x00809005E2A00E11ull
129 #define ID_AHA_29160N			0x0080900562A09005ull
130 #define ID_AHA_29160C			0x0080900562209005ull
131 #define ID_AHA_29160B			0x00809005E2209005ull
132 #define ID_AHA_19160B			0x0081900562A19005ull
133 #define ID_AHA_2915_30LP		0x0082900502109005ull
134 
135 #define ID_AIC7896			0x005F9005FFFF9005ull
136 #define ID_AIC7896_ARO			0x00539005FFFF9005ull
137 #define ID_AHA_3950U2B_0		0x00509005FFFF9005ull
138 #define ID_AHA_3950U2B_1		0x00509005F5009005ull
139 #define ID_AHA_3950U2D_0		0x00519005FFFF9005ull
140 #define ID_AHA_3950U2D_1		0x00519005B5009005ull
141 
142 #define ID_AIC7899			0x00CF9005FFFF9005ull
143 #define ID_AIC7899_ARO			0x00C39005FFFF9005ull
144 #define ID_AHA_3960D			0x00C09005F6209005ull
145 #define ID_AHA_3960D_CPQ		0x00C09005F6200E11ull
146 
147 #define ID_AIC7810			0x1078900400000000ull
148 #define ID_AIC7815			0x7815900400000000ull
149 
150 #define DEVID_9005_TYPE(id) ((id) & 0xF)
151 #define		DEVID_9005_TYPE_HBA		0x0	/* Standard Card */
152 #define		DEVID_9005_TYPE_AAA		0x3	/* RAID Card */
153 #define		DEVID_9005_TYPE_SISL		0x5	/* Container ROMB */
154 #define		DEVID_9005_TYPE_MB		0xF	/* On Motherboard */
155 
156 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
157 #define		DEVID_9005_MAXRATE_U160		0x0
158 #define		DEVID_9005_MAXRATE_ULTRA2	0x1
159 #define		DEVID_9005_MAXRATE_ULTRA	0x2
160 #define		DEVID_9005_MAXRATE_FAST		0x3
161 
162 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
163 
164 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
165 #define		DEVID_9005_CLASS_SPI		0x0	/* Parallel SCSI */
166 
167 #define SUBID_9005_TYPE(id) ((id) & 0xF)
168 #define		SUBID_9005_TYPE_MB		0xF	/* On Motherboard */
169 #define		SUBID_9005_TYPE_CARD		0x0	/* Standard Card */
170 #define		SUBID_9005_TYPE_LCCARD		0x1	/* Low Cost Card */
171 #define		SUBID_9005_TYPE_RAID		0x3	/* Combined with Raid */
172 
173 #define SUBID_9005_TYPE_KNOWN(id)			\
174 	  ((((id) & 0xF) == SUBID_9005_TYPE_MB)		\
175 	|| (((id) & 0xF) == SUBID_9005_TYPE_CARD)	\
176 	|| (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)	\
177 	|| (((id) & 0xF) == SUBID_9005_TYPE_RAID))
178 
179 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
180 #define		SUBID_9005_MAXRATE_ULTRA2	0x0
181 #define		SUBID_9005_MAXRATE_ULTRA	0x1
182 #define		SUBID_9005_MAXRATE_U160		0x2
183 #define		SUBID_9005_MAXRATE_RESERVED	0x3
184 
185 #define SUBID_9005_SEEPTYPE(id)						\
186 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
187 	 ? ((id) & 0xC0) >> 6						\
188 	 : ((id) & 0x300) >> 8)
189 #define		SUBID_9005_SEEPTYPE_NONE	0x0
190 #define		SUBID_9005_SEEPTYPE_1K		0x1
191 #define		SUBID_9005_SEEPTYPE_2K_4K	0x2
192 #define		SUBID_9005_SEEPTYPE_RESERVED	0x3
193 #define SUBID_9005_AUTOTERM(id)						\
194 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
195 	 ? (((id) & 0x400) >> 10) == 0					\
196 	 : (((id) & 0x40) >> 6) == 0)
197 
198 #define SUBID_9005_NUMCHAN(id)						\
199 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
200 	 ? ((id) & 0x300) >> 8						\
201 	 : ((id) & 0xC00) >> 10)
202 
203 #define SUBID_9005_LEGACYCONN(id)					\
204 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
205 	 ? 0								\
206 	 : ((id) & 0x80) >> 7)
207 
208 #define SUBID_9005_MFUNCENB(id)						\
209 	((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)			\
210 	 ? ((id) & 0x800) >> 11						\
211 	 : ((id) & 0x1000) >> 12)
212 /*
213  * Informational only. Should use chip register to be
214  * certain, but may be use in identification strings.
215  */
216 #define SUBID_9005_CARD_SCSIWIDTH_MASK	0x2000
217 #define SUBID_9005_CARD_PCIWIDTH_MASK	0x4000
218 #define SUBID_9005_CARD_SEDIFF_MASK	0x8000
219 
220 static ahc_device_setup_t ahc_aic785X_setup;
221 static ahc_device_setup_t ahc_aic7860_setup;
222 static ahc_device_setup_t ahc_apa1480_setup;
223 static ahc_device_setup_t ahc_aic7870_setup;
224 static ahc_device_setup_t ahc_aha394X_setup;
225 static ahc_device_setup_t ahc_aha494X_setup;
226 static ahc_device_setup_t ahc_aha398X_setup;
227 static ahc_device_setup_t ahc_aic7880_setup;
228 static ahc_device_setup_t ahc_aha2940Pro_setup;
229 static ahc_device_setup_t ahc_aha394XU_setup;
230 static ahc_device_setup_t ahc_aha398XU_setup;
231 static ahc_device_setup_t ahc_aic7890_setup;
232 static ahc_device_setup_t ahc_aic7892_setup;
233 static ahc_device_setup_t ahc_aic7895_setup;
234 static ahc_device_setup_t ahc_aic7896_setup;
235 static ahc_device_setup_t ahc_aic7899_setup;
236 static ahc_device_setup_t ahc_aha29160C_setup;
237 static ahc_device_setup_t ahc_raid_setup;
238 static ahc_device_setup_t ahc_aha394XX_setup;
239 static ahc_device_setup_t ahc_aha494XX_setup;
240 static ahc_device_setup_t ahc_aha398XX_setup;
241 
242 struct ahc_pci_identity ahc_pci_ident_table [] =
243 {
244 	/* aic7850 based controllers */
245 	{
246 		ID_AHA_2902_04_10_15_20C_30C,
247 		ID_ALL_MASK,
248 		"Adaptec 2902/04/10/15/20C/30C SCSI adapter",
249 		ahc_aic785X_setup
250 	},
251 	/* aic7860 based controllers */
252 	{
253 		ID_AHA_2930CU,
254 		ID_ALL_MASK,
255 		"Adaptec 2930CU SCSI adapter",
256 		ahc_aic7860_setup
257 	},
258 	{
259 		ID_AHA_1480A & ID_DEV_VENDOR_MASK,
260 		ID_DEV_VENDOR_MASK,
261 		"Adaptec 1480A Ultra SCSI adapter",
262 		ahc_apa1480_setup
263 	},
264 	{
265 		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
266 		ID_DEV_VENDOR_MASK,
267 		"Adaptec 2940A Ultra SCSI adapter",
268 		ahc_aic7860_setup
269 	},
270 	{
271 		ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
272 		ID_DEV_VENDOR_MASK,
273 		"Adaptec 2940A/CN Ultra SCSI adapter",
274 		ahc_aic7860_setup
275 	},
276 	{
277 		ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
278 		ID_DEV_VENDOR_MASK,
279 		"Adaptec 2930C Ultra SCSI adapter (VAR)",
280 		ahc_aic7860_setup
281 	},
282 	/* aic7870 based controllers */
283 	{
284 		ID_AHA_2940,
285 		ID_ALL_MASK,
286 		"Adaptec 2940 SCSI adapter",
287 		ahc_aic7870_setup
288 	},
289 	{
290 		ID_AHA_3940,
291 		ID_ALL_MASK,
292 		"Adaptec 3940 SCSI adapter",
293 		ahc_aha394X_setup
294 	},
295 	{
296 		ID_AHA_398X,
297 		ID_ALL_MASK,
298 		"Adaptec 398X SCSI RAID adapter",
299 		ahc_aha398X_setup
300 	},
301 	{
302 		ID_AHA_2944,
303 		ID_ALL_MASK,
304 		"Adaptec 2944 SCSI adapter",
305 		ahc_aic7870_setup
306 	},
307 	{
308 		ID_AHA_3944,
309 		ID_ALL_MASK,
310 		"Adaptec 3944 SCSI adapter",
311 		ahc_aha394X_setup
312 	},
313 	{
314 		ID_AHA_4944,
315 		ID_ALL_MASK,
316 		"Adaptec 4944 SCSI adapter",
317 		ahc_aha494X_setup
318 	},
319 	/* aic7880 based controllers */
320 	{
321 		ID_AHA_2940U & ID_DEV_VENDOR_MASK,
322 		ID_DEV_VENDOR_MASK,
323 		"Adaptec 2940 Ultra SCSI adapter",
324 		ahc_aic7880_setup
325 	},
326 	{
327 		ID_AHA_3940U & ID_DEV_VENDOR_MASK,
328 		ID_DEV_VENDOR_MASK,
329 		"Adaptec 3940 Ultra SCSI adapter",
330 		ahc_aha394XU_setup
331 	},
332 	{
333 		ID_AHA_2944U & ID_DEV_VENDOR_MASK,
334 		ID_DEV_VENDOR_MASK,
335 		"Adaptec 2944 Ultra SCSI adapter",
336 		ahc_aic7880_setup
337 	},
338 	{
339 		ID_AHA_3944U & ID_DEV_VENDOR_MASK,
340 		ID_DEV_VENDOR_MASK,
341 		"Adaptec 3944 Ultra SCSI adapter",
342 		ahc_aha394XU_setup
343 	},
344 	{
345 		ID_AHA_398XU & ID_DEV_VENDOR_MASK,
346 		ID_DEV_VENDOR_MASK,
347 		"Adaptec 398X Ultra SCSI RAID adapter",
348 		ahc_aha398XU_setup
349 	},
350 	{
351 		/*
352 		 * XXX Don't know the slot numbers
353 		 * so we can't identify channels
354 		 */
355 		ID_AHA_4944U & ID_DEV_VENDOR_MASK,
356 		ID_DEV_VENDOR_MASK,
357 		"Adaptec 4944 Ultra SCSI adapter",
358 		ahc_aic7880_setup
359 	},
360 	{
361 		ID_AHA_2930U & ID_DEV_VENDOR_MASK,
362 		ID_DEV_VENDOR_MASK,
363 		"Adaptec 2930 Ultra SCSI adapter",
364 		ahc_aic7880_setup
365 	},
366 	{
367 		ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
368 		ID_DEV_VENDOR_MASK,
369 		"Adaptec 2940 Pro Ultra SCSI adapter",
370 		ahc_aha2940Pro_setup
371 	},
372 	{
373 		ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
374 		ID_DEV_VENDOR_MASK,
375 		"Adaptec 2940/CN Ultra SCSI adapter",
376 		ahc_aic7880_setup
377 	},
378 	/* Ignore all SISL (AAC on MB) based controllers. */
379 	{
380 		ID_9005_SISL_ID,
381 		ID_9005_SISL_MASK,
382 		NULL,
383 		NULL
384 	},
385 	/* aic7890 based controllers */
386 	{
387 		ID_AHA_2930U2,
388 		ID_ALL_MASK,
389 		"Adaptec 2930 Ultra2 SCSI adapter",
390 		ahc_aic7890_setup
391 	},
392 	{
393 		ID_AHA_2940U2B,
394 		ID_ALL_MASK,
395 		"Adaptec 2940B Ultra2 SCSI adapter",
396 		ahc_aic7890_setup
397 	},
398 	{
399 		ID_AHA_2940U2_OEM,
400 		ID_ALL_MASK,
401 		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
402 		ahc_aic7890_setup
403 	},
404 	{
405 		ID_AHA_2940U2,
406 		ID_ALL_MASK,
407 		"Adaptec 2940 Ultra2 SCSI adapter",
408 		ahc_aic7890_setup
409 	},
410 	{
411 		ID_AHA_2950U2B,
412 		ID_ALL_MASK,
413 		"Adaptec 2950 Ultra2 SCSI adapter",
414 		ahc_aic7890_setup
415 	},
416 	{
417 		ID_AIC7890_ARO,
418 		ID_ALL_MASK,
419 		"Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
420 		ahc_aic7890_setup
421 	},
422 	{
423 		ID_AAA_131U2,
424 		ID_ALL_MASK,
425 		"Adaptec AAA-131 Ultra2 RAID adapter",
426 		ahc_aic7890_setup
427 	},
428 	/* aic7892 based controllers */
429 	{
430 		ID_AHA_29160,
431 		ID_ALL_MASK,
432 		"Adaptec 29160 Ultra160 SCSI adapter",
433 		ahc_aic7892_setup
434 	},
435 	{
436 		ID_AHA_29160_CPQ,
437 		ID_ALL_MASK,
438 		"Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
439 		ahc_aic7892_setup
440 	},
441 	{
442 		ID_AHA_29160N,
443 		ID_ALL_MASK,
444 		"Adaptec 29160N Ultra160 SCSI adapter",
445 		ahc_aic7892_setup
446 	},
447 	{
448 		ID_AHA_29160C,
449 		ID_ALL_MASK,
450 		"Adaptec 29160C Ultra160 SCSI adapter",
451 		ahc_aha29160C_setup
452 	},
453 	{
454 		ID_AHA_29160B,
455 		ID_ALL_MASK,
456 		"Adaptec 29160B Ultra160 SCSI adapter",
457 		ahc_aic7892_setup
458 	},
459 	{
460 		ID_AHA_19160B,
461 		ID_ALL_MASK,
462 		"Adaptec 19160B Ultra160 SCSI adapter",
463 		ahc_aic7892_setup
464 	},
465 	{
466 		ID_AIC7892_ARO,
467 		ID_ALL_MASK,
468 		"Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
469 		ahc_aic7892_setup
470 	},
471 	{
472 		ID_AHA_2915_30LP,
473 		ID_ALL_MASK,
474 		"Adaptec 2915/30LP Ultra160 SCSI adapter",
475 		ahc_aic7892_setup
476 	},
477 	/* aic7895 based controllers */
478 	{
479 		ID_AHA_2940U_DUAL,
480 		ID_ALL_MASK,
481 		"Adaptec 2940/DUAL Ultra SCSI adapter",
482 		ahc_aic7895_setup
483 	},
484 	{
485 		ID_AHA_3940AU,
486 		ID_ALL_MASK,
487 		"Adaptec 3940A Ultra SCSI adapter",
488 		ahc_aic7895_setup
489 	},
490 	{
491 		ID_AHA_3944AU,
492 		ID_ALL_MASK,
493 		"Adaptec 3944A Ultra SCSI adapter",
494 		ahc_aic7895_setup
495 	},
496 	{
497 		ID_AIC7895_ARO,
498 		ID_AIC7895_ARO_MASK,
499 		"Adaptec aic7895 Ultra SCSI adapter (ARO)",
500 		ahc_aic7895_setup
501 	},
502 	/* aic7896/97 based controllers */
503 	{
504 		ID_AHA_3950U2B_0,
505 		ID_ALL_MASK,
506 		"Adaptec 3950B Ultra2 SCSI adapter",
507 		ahc_aic7896_setup
508 	},
509 	{
510 		ID_AHA_3950U2B_1,
511 		ID_ALL_MASK,
512 		"Adaptec 3950B Ultra2 SCSI adapter",
513 		ahc_aic7896_setup
514 	},
515 	{
516 		ID_AHA_3950U2D_0,
517 		ID_ALL_MASK,
518 		"Adaptec 3950D Ultra2 SCSI adapter",
519 		ahc_aic7896_setup
520 	},
521 	{
522 		ID_AHA_3950U2D_1,
523 		ID_ALL_MASK,
524 		"Adaptec 3950D Ultra2 SCSI adapter",
525 		ahc_aic7896_setup
526 	},
527 	{
528 		ID_AIC7896_ARO,
529 		ID_ALL_MASK,
530 		"Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
531 		ahc_aic7896_setup
532 	},
533 	/* aic7899 based controllers */
534 	{
535 		ID_AHA_3960D,
536 		ID_ALL_MASK,
537 		"Adaptec 3960D Ultra160 SCSI adapter",
538 		ahc_aic7899_setup
539 	},
540 	{
541 		ID_AHA_3960D_CPQ,
542 		ID_ALL_MASK,
543 		"Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
544 		ahc_aic7899_setup
545 	},
546 	{
547 		ID_AIC7899_ARO,
548 		ID_ALL_MASK,
549 		"Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
550 		ahc_aic7899_setup
551 	},
552 	/* Generic chip probes for devices we don't know 'exactly' */
553 	{
554 		ID_AIC7850 & ID_DEV_VENDOR_MASK,
555 		ID_DEV_VENDOR_MASK,
556 		"Adaptec aic7850 SCSI adapter",
557 		ahc_aic785X_setup
558 	},
559 	{
560 		ID_AIC7855 & ID_DEV_VENDOR_MASK,
561 		ID_DEV_VENDOR_MASK,
562 		"Adaptec aic7855 SCSI adapter",
563 		ahc_aic785X_setup
564 	},
565 	{
566 		ID_AIC7859 & ID_DEV_VENDOR_MASK,
567 		ID_DEV_VENDOR_MASK,
568 		"Adaptec aic7859 SCSI adapter",
569 		ahc_aic7860_setup
570 	},
571 	{
572 		ID_AIC7860 & ID_DEV_VENDOR_MASK,
573 		ID_DEV_VENDOR_MASK,
574 		"Adaptec aic7860 Ultra SCSI adapter",
575 		ahc_aic7860_setup
576 	},
577 	{
578 		ID_AIC7870 & ID_DEV_VENDOR_MASK,
579 		ID_DEV_VENDOR_MASK,
580 		"Adaptec aic7870 SCSI adapter",
581 		ahc_aic7870_setup
582 	},
583 	{
584 		ID_AIC7880 & ID_DEV_VENDOR_MASK,
585 		ID_DEV_VENDOR_MASK,
586 		"Adaptec aic7880 Ultra SCSI adapter",
587 		ahc_aic7880_setup
588 	},
589 	{
590 		ID_AIC7890 & ID_9005_GENERIC_MASK,
591 		ID_9005_GENERIC_MASK,
592 		"Adaptec aic7890/91 Ultra2 SCSI adapter",
593 		ahc_aic7890_setup
594 	},
595 	{
596 		ID_AIC7892 & ID_9005_GENERIC_MASK,
597 		ID_9005_GENERIC_MASK,
598 		"Adaptec aic7892 Ultra160 SCSI adapter",
599 		ahc_aic7892_setup
600 	},
601 	{
602 		ID_AIC7895 & ID_DEV_VENDOR_MASK,
603 		ID_DEV_VENDOR_MASK,
604 		"Adaptec aic7895 Ultra SCSI adapter",
605 		ahc_aic7895_setup
606 	},
607 	{
608 		ID_AIC7896 & ID_9005_GENERIC_MASK,
609 		ID_9005_GENERIC_MASK,
610 		"Adaptec aic7896/97 Ultra2 SCSI adapter",
611 		ahc_aic7896_setup
612 	},
613 	{
614 		ID_AIC7899 & ID_9005_GENERIC_MASK,
615 		ID_9005_GENERIC_MASK,
616 		"Adaptec aic7899 Ultra160 SCSI adapter",
617 		ahc_aic7899_setup
618 	},
619 	{
620 		ID_AIC7810 & ID_DEV_VENDOR_MASK,
621 		ID_DEV_VENDOR_MASK,
622 		"Adaptec aic7810 RAID memory controller",
623 		ahc_raid_setup
624 	},
625 	{
626 		ID_AIC7815 & ID_DEV_VENDOR_MASK,
627 		ID_DEV_VENDOR_MASK,
628 		"Adaptec aic7815 RAID memory controller",
629 		ahc_raid_setup
630 	}
631 };
632 
633 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
634 
635 #define AHC_394X_SLOT_CHANNEL_A	4
636 #define AHC_394X_SLOT_CHANNEL_B	5
637 
638 #define AHC_398X_SLOT_CHANNEL_A	4
639 #define AHC_398X_SLOT_CHANNEL_B	8
640 #define AHC_398X_SLOT_CHANNEL_C	12
641 
642 #define AHC_494X_SLOT_CHANNEL_A	4
643 #define AHC_494X_SLOT_CHANNEL_B	5
644 #define AHC_494X_SLOT_CHANNEL_C	6
645 #define AHC_494X_SLOT_CHANNEL_D	7
646 
647 #define	DEVCONFIG		0x40
648 #define		PCIERRGENDIS	0x80000000ul
649 #define		SCBSIZE32	0x00010000ul	/* aic789X only */
650 #define		REXTVALID	0x00001000ul	/* ultra cards only */
651 #define		MPORTMODE	0x00000400ul	/* aic7870+ only */
652 #define		RAMPSM		0x00000200ul	/* aic7870+ only */
653 #define		VOLSENSE	0x00000100ul
654 #define		PCI64BIT	0x00000080ul	/* 64Bit PCI bus (Ultra2 Only)*/
655 #define		SCBRAMSEL	0x00000080ul
656 #define		MRDCEN		0x00000040ul
657 #define		EXTSCBTIME	0x00000020ul	/* aic7870 only */
658 #define		EXTSCBPEN	0x00000010ul	/* aic7870 only */
659 #define		BERREN		0x00000008ul
660 #define		DACEN		0x00000004ul
661 #define		STPWLEVEL	0x00000002ul
662 #define		DIFACTNEGEN	0x00000001ul	/* aic7870 only */
663 
664 #define	CSIZE_LATTIME		0x0c
665 #define		CACHESIZE	0x0000003ful	/* only 5 bits */
666 #define		LATTIME		0x0000ff00ul
667 
668 /* PCI STATUS definitions */
669 #define	DPE	0x80
670 #define SSE	0x40
671 #define	RMA	0x20
672 #define	RTA	0x10
673 #define STA	0x08
674 #define DPR	0x01
675 
676 static int ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
677 				     uint16_t subdevice, uint16_t subvendor);
678 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
679 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
680 				  int pcheck, int fast, int large);
681 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
682 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
683 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
684 				 struct seeprom_config *sc);
685 static void configure_termination(struct ahc_softc *ahc,
686 				  struct seeprom_descriptor *sd,
687 				  u_int adapter_control,
688 	 			  u_int *sxfrctl1);
689 
690 static void ahc_new_term_detect(struct ahc_softc *ahc,
691 				int *enableSEC_low,
692 				int *enableSEC_high,
693 				int *enablePRI_low,
694 				int *enablePRI_high,
695 				int *eeprom_present);
696 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
697 				 int *internal68_present,
698 				 int *externalcable_present,
699 				 int *eeprom_present);
700 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
701 				 int *externalcable_present,
702 				 int *eeprom_present);
703 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
704 static uint8_t read_brdctl(struct ahc_softc *ahc);
705 static void ahc_pci_intr(struct ahc_softc *ahc);
706 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
707 static int  ahc_pci_suspend(struct ahc_softc *ahc);
708 static int  ahc_pci_resume(struct ahc_softc *ahc);
709 
710 static int
711 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
712 			  uint16_t subdevice, uint16_t subvendor)
713 {
714 	int result;
715 
716 	/* Default to invalid. */
717 	result = 0;
718 	if (vendor == 0x9005
719 	 && subvendor == 0x9005
720          && subdevice != device
721          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
722 
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 
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 		/*
907 		 * DPARCKEN doesn't work correctly on
908 		 * some MBs so don't use it.
909 		 */
910 		dscommand0 &= ~DPARCKEN;
911 	}
912 
913 	/*
914 	 * Handle chips that must have cache line
915 	 * streaming (dis/en)abled.
916 	 */
917 	if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
918 		dscommand0 |= CACHETHEN;
919 
920 	if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
921 		dscommand0 &= ~CACHETHEN;
922 
923 	ahc_outb(ahc, DSCOMMAND0, dscommand0);
924 
925 	ahc->pci_cachesize =
926 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
927 				/*bytes*/1) & CACHESIZE;
928 	ahc->pci_cachesize *= 4;
929 
930 	if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
931 	 && ahc->pci_cachesize == 4) {
932 
933 		aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
934 				     0, /*bytes*/1);
935 		ahc->pci_cachesize = 0;
936 	}
937 
938 	/*
939 	 * We cannot perform ULTRA speeds without the presence
940 	 * of the external precision resistor.
941 	 */
942 	if ((ahc->features & AHC_ULTRA) != 0) {
943 		uint32_t devconfig;
944 
945 		devconfig = aic_pci_read_config(ahc->dev_softc,
946 						DEVCONFIG, /*bytes*/4);
947 		if ((devconfig & REXTVALID) == 0)
948 			ahc->features &= ~AHC_ULTRA;
949 	}
950 
951 	/* See if we have a SEEPROM and perform auto-term */
952 	check_extport(ahc, &sxfrctl1);
953 
954 	/*
955 	 * Take the LED out of diagnostic mode
956 	 */
957 	sblkctl = ahc_inb(ahc, SBLKCTL);
958 	ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
959 
960 	if ((ahc->features & AHC_ULTRA2) != 0) {
961 		ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
962 	} else {
963 		ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
964 	}
965 
966 	if (ahc->flags & AHC_USEDEFAULTS) {
967 		/*
968 		 * PCI Adapter default setup
969 		 * Should only be used if the adapter does not have
970 		 * a SEEPROM.
971 		 */
972 		/* See if someone else set us up already */
973 		if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
974 		 && scsiseq != 0) {
975 			printf("%s: Using left over BIOS settings\n",
976 				ahc_name(ahc));
977 			ahc->flags &= ~AHC_USEDEFAULTS;
978 			ahc->flags |= AHC_BIOS_ENABLED;
979 		} else {
980 			/*
981 			 * Assume only one connector and always turn
982 			 * on termination.
983 			 */
984  			our_id = 0x07;
985 			sxfrctl1 = STPWEN;
986 		}
987 		ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
988 
989 		ahc->our_id = our_id;
990 	}
991 
992 	/*
993 	 * Take a look to see if we have external SRAM.
994 	 * We currently do not attempt to use SRAM that is
995 	 * shared among multiple controllers.
996 	 */
997 	ahc_probe_ext_scbram(ahc);
998 
999 	/*
1000 	 * Record our termination setting for the
1001 	 * generic initialization routine.
1002 	 */
1003 	if ((sxfrctl1 & STPWEN) != 0)
1004 		ahc->flags |= AHC_TERM_ENB_A;
1005 
1006 	/*
1007 	 * Save chip register configuration data for chip resets
1008 	 * that occur during runtime and resume events.
1009 	 */
1010 	ahc->bus_softc.pci_softc.devconfig =
1011 	    aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1012 	ahc->bus_softc.pci_softc.command =
1013 	    aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
1014 	ahc->bus_softc.pci_softc.csize_lattime =
1015 	    aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
1016 	ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1017 	ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
1018 	if ((ahc->features & AHC_DT) != 0) {
1019 		u_int sfunct;
1020 
1021 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
1022 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
1023 		ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
1024 		ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
1025 		ahc_outb(ahc, SFUNCT, sfunct);
1026 		ahc->bus_softc.pci_softc.crccontrol1 =
1027 		    ahc_inb(ahc, CRCCONTROL1);
1028 	}
1029 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
1030 		ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
1031 
1032 	if ((ahc->features & AHC_ULTRA2) != 0)
1033 		ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
1034 
1035 	/* Core initialization */
1036 	error = ahc_init(ahc);
1037 	if (error != 0)
1038 		return (error);
1039 
1040 	/*
1041 	 * Allow interrupts now that we are completely setup.
1042 	 */
1043 	error = ahc_pci_map_int(ahc);
1044 	if (error != 0)
1045 		return (error);
1046 
1047 	ahc_lock(ahc);
1048 	/*
1049 	 * Link this softc in with all other ahc instances.
1050 	 */
1051 	ahc_softc_insert(ahc);
1052 	ahc_unlock(ahc);
1053 	return (0);
1054 }
1055 
1056 /*
1057  * Test for the presence of external sram in an
1058  * "unshared" configuration.
1059  */
1060 static int
1061 ahc_ext_scbram_present(struct ahc_softc *ahc)
1062 {
1063 	u_int chip;
1064 	int ramps;
1065 	int single_user;
1066 	uint32_t devconfig;
1067 
1068 	chip = ahc->chip & AHC_CHIPID_MASK;
1069 	devconfig = aic_pci_read_config(ahc->dev_softc,
1070 					DEVCONFIG, /*bytes*/4);
1071 	single_user = (devconfig & MPORTMODE) != 0;
1072 
1073 	if ((ahc->features & AHC_ULTRA2) != 0)
1074 		ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
1075 	else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1076 		/*
1077 		 * External SCBRAM arbitration is flakey
1078 		 * on these chips.  Unfortunately this means
1079 		 * we don't use the extra SCB ram space on the
1080 		 * 3940AUW.
1081 		 */
1082 		ramps = 0;
1083 	else if (chip >= AHC_AIC7870)
1084 		ramps = (devconfig & RAMPSM) != 0;
1085 	else
1086 		ramps = 0;
1087 
1088 	if (ramps && single_user)
1089 		return (1);
1090 	return (0);
1091 }
1092 
1093 /*
1094  * Enable external scbram.
1095  */
1096 static void
1097 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1098 		  int fast, int large)
1099 {
1100 	uint32_t devconfig;
1101 
1102 	if (ahc->features & AHC_MULTI_FUNC) {
1103 		/*
1104 		 * Set the SCB Base addr (highest address bit)
1105 		 * depending on which channel we are.
1106 		 */
1107 		ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
1108 	}
1109 
1110 	ahc->flags &= ~AHC_LSCBS_ENABLED;
1111 	if (large)
1112 		ahc->flags |= AHC_LSCBS_ENABLED;
1113 	devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1114 	if ((ahc->features & AHC_ULTRA2) != 0) {
1115 		u_int dscommand0;
1116 
1117 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1118 		if (enable)
1119 			dscommand0 &= ~INTSCBRAMSEL;
1120 		else
1121 			dscommand0 |= INTSCBRAMSEL;
1122 		if (large)
1123 			dscommand0 &= ~USCBSIZE32;
1124 		else
1125 			dscommand0 |= USCBSIZE32;
1126 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
1127 	} else {
1128 		if (fast)
1129 			devconfig &= ~EXTSCBTIME;
1130 		else
1131 			devconfig |= EXTSCBTIME;
1132 		if (enable)
1133 			devconfig &= ~SCBRAMSEL;
1134 		else
1135 			devconfig |= SCBRAMSEL;
1136 		if (large)
1137 			devconfig &= ~SCBSIZE32;
1138 		else
1139 			devconfig |= SCBSIZE32;
1140 	}
1141 	if (pcheck)
1142 		devconfig |= EXTSCBPEN;
1143 	else
1144 		devconfig &= ~EXTSCBPEN;
1145 
1146 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1147 }
1148 
1149 /*
1150  * Take a look to see if we have external SRAM.
1151  * We currently do not attempt to use SRAM that is
1152  * shared among multiple controllers.
1153  */
1154 static void
1155 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1156 {
1157 	int num_scbs;
1158 	int test_num_scbs;
1159 	int enable;
1160 	int pcheck;
1161 	int fast;
1162 	int large;
1163 
1164 	enable = FALSE;
1165 	pcheck = FALSE;
1166 	fast = FALSE;
1167 	large = FALSE;
1168 	num_scbs = 0;
1169 
1170 	if (ahc_ext_scbram_present(ahc) == 0)
1171 		goto done;
1172 
1173 	/*
1174 	 * Probe for the best parameters to use.
1175 	 */
1176 	ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1177 	num_scbs = ahc_probe_scbs(ahc);
1178 	if (num_scbs == 0) {
1179 		/* The SRAM wasn't really present. */
1180 		goto done;
1181 	}
1182 	enable = TRUE;
1183 
1184 	/*
1185 	 * Clear any outstanding parity error
1186 	 * and ensure that parity error reporting
1187 	 * is enabled.
1188 	 */
1189 	ahc_outb(ahc, SEQCTL, 0);
1190 	ahc_outb(ahc, CLRINT, CLRPARERR);
1191 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1192 
1193 	/* Now see if we can do parity */
1194 	ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1195 	num_scbs = ahc_probe_scbs(ahc);
1196 	if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1197 	 || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1198 		pcheck = TRUE;
1199 
1200 	/* Clear any resulting parity error */
1201 	ahc_outb(ahc, CLRINT, CLRPARERR);
1202 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1203 
1204 	/* Now see if we can do fast timing */
1205 	ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1206 	test_num_scbs = ahc_probe_scbs(ahc);
1207 	if (test_num_scbs == num_scbs
1208 	 && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1209 	  || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1210 		fast = TRUE;
1211 
1212 	/*
1213 	 * See if we can use large SCBs and still maintain
1214 	 * the same overall count of SCBs.
1215 	 */
1216 	if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1217 		ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1218 		test_num_scbs = ahc_probe_scbs(ahc);
1219 		if (test_num_scbs >= num_scbs) {
1220 			large = TRUE;
1221 			num_scbs = test_num_scbs;
1222 	 		if (num_scbs >= 64) {
1223 				/*
1224 				 * We have enough space to move the
1225 				 * "busy targets table" into SCB space
1226 				 * and make it qualify all the way to the
1227 				 * lun level.
1228 				 */
1229 				ahc->flags |= AHC_SCB_BTT;
1230 			}
1231 		}
1232 	}
1233 done:
1234 	/*
1235 	 * Disable parity error reporting until we
1236 	 * can load instruction ram.
1237 	 */
1238 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1239 	/* Clear any latched parity error */
1240 	ahc_outb(ahc, CLRINT, CLRPARERR);
1241 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1242 	if (bootverbose && enable) {
1243 		printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1244 		       ahc_name(ahc), fast ? "fast" : "slow",
1245 		       pcheck ? ", parity checking enabled" : "",
1246 		       large ? 64 : 32);
1247 	}
1248 	ahc_scbram_config(ahc, enable, pcheck, fast, large);
1249 }
1250 
1251 /*
1252  * Perform some simple tests that should catch situations where
1253  * our registers are invalidly mapped.
1254  */
1255 int
1256 ahc_pci_test_register_access(struct ahc_softc *ahc)
1257 {
1258 	int	 error;
1259 	u_int	 status1;
1260 	uint32_t cmd;
1261 	uint8_t	 hcntrl;
1262 
1263 	error = EIO;
1264 
1265 	/*
1266 	 * Enable PCI error interrupt status, but suppress NMIs
1267 	 * generated by SERR raised due to target aborts.
1268 	 */
1269 	cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1270 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1271 			     cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1272 
1273 	/*
1274 	 * First a simple test to see if any
1275 	 * registers can be read.  Reading
1276 	 * HCNTRL has no side effects and has
1277 	 * at least one bit that is guaranteed to
1278 	 * be zero so it is a good register to
1279 	 * use for this test.
1280 	 */
1281 	hcntrl = ahc_inb(ahc, HCNTRL);
1282 
1283 	if (hcntrl == 0xFF)
1284 		goto fail;
1285 
1286 	if ((hcntrl & CHIPRST) != 0) {
1287 		/*
1288 		 * The chip has not been initialized since
1289 		 * PCI/EISA/VLB bus reset.  Don't trust
1290 		 * "left over BIOS data".
1291 		 */
1292 		ahc->flags |= AHC_NO_BIOS_INIT;
1293 	}
1294 
1295 	/*
1296 	 * Next create a situation where write combining
1297 	 * or read prefetching could be initiated by the
1298 	 * CPU or host bridge.  Our device does not support
1299 	 * either, so look for data corruption and/or flagged
1300 	 * PCI errors.  First pause without causing another
1301 	 * chip reset.
1302 	 */
1303 	hcntrl &= ~CHIPRST;
1304 	ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1305 	while (ahc_is_paused(ahc) == 0)
1306 		;
1307 
1308 	/* Clear any PCI errors that occurred before our driver attached. */
1309 	status1 = aic_pci_read_config(ahc->dev_softc,
1310 				      PCIR_STATUS + 1, /*bytes*/1);
1311 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1312 			     status1, /*bytes*/1);
1313 	ahc_outb(ahc, CLRINT, CLRPARERR);
1314 
1315 	ahc_outb(ahc, SEQCTL, PERRORDIS);
1316 	ahc_outb(ahc, SCBPTR, 0);
1317 	ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1318 	if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1319 		goto fail;
1320 
1321 	status1 = aic_pci_read_config(ahc->dev_softc,
1322 				      PCIR_STATUS + 1, /*bytes*/1);
1323 	if ((status1 & STA) != 0)
1324 		goto fail;
1325 
1326 	error = 0;
1327 
1328 fail:
1329 	/* Silently clear any latched errors. */
1330 	status1 = aic_pci_read_config(ahc->dev_softc,
1331 				      PCIR_STATUS + 1, /*bytes*/1);
1332 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1333 			     status1, /*bytes*/1);
1334 	ahc_outb(ahc, CLRINT, CLRPARERR);
1335 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1336 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1337 	return (error);
1338 }
1339 
1340 /*
1341  * Check the external port logic for a serial eeprom
1342  * and termination/cable detection contrls.
1343  */
1344 static void
1345 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1346 {
1347 	struct	seeprom_descriptor sd;
1348 	struct	seeprom_config *sc;
1349 	int	have_seeprom;
1350 	int	have_autoterm;
1351 
1352 	sd.sd_ahc = ahc;
1353 	sd.sd_control_offset = SEECTL;
1354 	sd.sd_status_offset = SEECTL;
1355 	sd.sd_dataout_offset = SEECTL;
1356 	sc = ahc->seep_config;
1357 
1358 	/*
1359 	 * For some multi-channel devices, the c46 is simply too
1360 	 * small to work.  For the other controller types, we can
1361 	 * get our information from either SEEPROM type.  Set the
1362 	 * type to start our probe with accordingly.
1363 	 */
1364 	if (ahc->flags & AHC_LARGE_SEEPROM)
1365 		sd.sd_chip = C56_66;
1366 	else
1367 		sd.sd_chip = C46;
1368 
1369 	sd.sd_MS = SEEMS;
1370 	sd.sd_RDY = SEERDY;
1371 	sd.sd_CS = SEECS;
1372 	sd.sd_CK = SEECK;
1373 	sd.sd_DO = SEEDO;
1374 	sd.sd_DI = SEEDI;
1375 
1376 	have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1377 	if (have_seeprom) {
1378 
1379 		if (bootverbose)
1380 			printf("%s: Reading SEEPROM...", ahc_name(ahc));
1381 
1382 		for (;;) {
1383 			u_int start_addr;
1384 
1385 			start_addr = 32 * (ahc->channel - 'A');
1386 
1387 			have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1388 							start_addr,
1389 							sizeof(*sc)/2);
1390 
1391 			if (have_seeprom)
1392 				have_seeprom = ahc_verify_cksum(sc);
1393 
1394 			if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1395 				if (bootverbose) {
1396 					if (have_seeprom == 0)
1397 						printf ("checksum error\n");
1398 					else
1399 						printf ("done.\n");
1400 				}
1401 				break;
1402 			}
1403 			sd.sd_chip = C56_66;
1404 		}
1405 		ahc_release_seeprom(&sd);
1406 
1407 		/* Remember the SEEPROM type for later */
1408 		if (sd.sd_chip == C56_66)
1409 			ahc->flags |= AHC_LARGE_SEEPROM;
1410 	}
1411 
1412 	if (!have_seeprom) {
1413 		/*
1414 		 * Pull scratch ram settings and treat them as
1415 		 * if they are the contents of an seeprom if
1416 		 * the 'ADPT' signature is found in SCB2.
1417 		 * We manually compose the data as 16bit values
1418 		 * to avoid endian issues.
1419 		 */
1420 		ahc_outb(ahc, SCBPTR, 2);
1421 		if (ahc_inb(ahc, SCB_BASE) == 'A'
1422 		 && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1423 		 && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1424 		 && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1425 			uint16_t *sc_data;
1426 			int	  i;
1427 
1428 			sc_data = (uint16_t *)sc;
1429 			for (i = 0; i < 32; i++, sc_data++) {
1430 				int	j;
1431 
1432 				j = i * 2;
1433 				*sc_data = ahc_inb(ahc, SRAM_BASE + j)
1434 					 | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1435 			}
1436 			have_seeprom = ahc_verify_cksum(sc);
1437 			if (have_seeprom)
1438 				ahc->flags |= AHC_SCB_CONFIG_USED;
1439 		}
1440 		/*
1441 		 * Clear any SCB parity errors in case this data and
1442 		 * its associated parity was not initialized by the BIOS
1443 		 */
1444 		ahc_outb(ahc, CLRINT, CLRPARERR);
1445 		ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1446 	}
1447 
1448 	if (!have_seeprom) {
1449 		if (bootverbose)
1450 			printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1451 		ahc->flags |= AHC_USEDEFAULTS;
1452 		free(ahc->seep_config, M_DEVBUF);
1453 		ahc->seep_config = NULL;
1454 		sc = NULL;
1455 	} else {
1456 		ahc_parse_pci_eeprom(ahc, sc);
1457 	}
1458 
1459 	/*
1460 	 * Cards that have the external logic necessary to talk to
1461 	 * a SEEPROM, are almost certain to have the remaining logic
1462 	 * necessary for auto-termination control.  This assumption
1463 	 * hasn't failed yet...
1464 	 */
1465 	have_autoterm = have_seeprom;
1466 
1467 	/*
1468 	 * Some low-cost chips have SEEPROM and auto-term control built
1469 	 * in, instead of using a GAL.  They can tell us directly
1470 	 * if the termination logic is enabled.
1471 	 */
1472 	if ((ahc->features & AHC_SPIOCAP) != 0) {
1473 		if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1474 			have_autoterm = FALSE;
1475 	}
1476 
1477 	if (have_autoterm) {
1478 		ahc->flags |= AHC_HAS_TERM_LOGIC;
1479 		ahc_acquire_seeprom(ahc, &sd);
1480 		configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1481 		ahc_release_seeprom(&sd);
1482 	} else if (have_seeprom) {
1483 		*sxfrctl1 &= ~STPWEN;
1484 		if ((sc->adapter_control & CFSTERM) != 0)
1485 			*sxfrctl1 |= STPWEN;
1486 		if (bootverbose)
1487 			printf("%s: Low byte termination %sabled\n",
1488 			       ahc_name(ahc),
1489 			       (*sxfrctl1 & STPWEN) ? "en" : "dis");
1490 	}
1491 }
1492 
1493 static void
1494 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1495 {
1496 	/*
1497 	 * Put the data we've collected down into SRAM
1498 	 * where ahc_init will find it.
1499 	 */
1500 	int	 i;
1501 	int	 max_targ = sc->max_targets & CFMAXTARG;
1502 	u_int	 scsi_conf;
1503 	uint16_t discenable;
1504 	uint16_t ultraenb;
1505 
1506 	discenable = 0;
1507 	ultraenb = 0;
1508 	if ((sc->adapter_control & CFULTRAEN) != 0) {
1509 		/*
1510 		 * Determine if this adapter has a "newstyle"
1511 		 * SEEPROM format.
1512 		 */
1513 		for (i = 0; i < max_targ; i++) {
1514 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1515 				ahc->flags |= AHC_NEWEEPROM_FMT;
1516 				break;
1517 			}
1518 		}
1519 	}
1520 
1521 	for (i = 0; i < max_targ; i++) {
1522 		u_int     scsirate;
1523 		uint16_t target_mask;
1524 
1525 		target_mask = 0x01 << i;
1526 		if (sc->device_flags[i] & CFDISC)
1527 			discenable |= target_mask;
1528 		if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1529 			if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1530 				ultraenb |= target_mask;
1531 		} else if ((sc->adapter_control & CFULTRAEN) != 0) {
1532 			ultraenb |= target_mask;
1533 		}
1534 		if ((sc->device_flags[i] & CFXFER) == 0x04
1535 		 && (ultraenb & target_mask) != 0) {
1536 			/* Treat 10MHz as a non-ultra speed */
1537 			sc->device_flags[i] &= ~CFXFER;
1538 		 	ultraenb &= ~target_mask;
1539 		}
1540 		if ((ahc->features & AHC_ULTRA2) != 0) {
1541 			u_int offset;
1542 
1543 			if (sc->device_flags[i] & CFSYNCH)
1544 				offset = MAX_OFFSET_ULTRA2;
1545 			else
1546 				offset = 0;
1547 			ahc_outb(ahc, TARG_OFFSET + i, offset);
1548 
1549 			/*
1550 			 * The ultra enable bits contain the
1551 			 * high bit of the ultra2 sync rate
1552 			 * field.
1553 			 */
1554 			scsirate = (sc->device_flags[i] & CFXFER)
1555 				 | ((ultraenb & target_mask) ? 0x8 : 0x0);
1556 			if (sc->device_flags[i] & CFWIDEB)
1557 				scsirate |= WIDEXFER;
1558 		} else {
1559 			scsirate = (sc->device_flags[i] & CFXFER) << 4;
1560 			if (sc->device_flags[i] & CFSYNCH)
1561 				scsirate |= SOFS;
1562 			if (sc->device_flags[i] & CFWIDEB)
1563 				scsirate |= WIDEXFER;
1564 		}
1565 		ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1566 	}
1567 	ahc->our_id = sc->brtime_id & CFSCSIID;
1568 
1569 	scsi_conf = (ahc->our_id & 0x7);
1570 	if (sc->adapter_control & CFSPARITY)
1571 		scsi_conf |= ENSPCHK;
1572 	if (sc->adapter_control & CFRESETB)
1573 		scsi_conf |= RESET_SCSI;
1574 
1575 	ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1576 
1577 	if (sc->bios_control & CFEXTEND)
1578 		ahc->flags |= AHC_EXTENDED_TRANS_A;
1579 
1580 	if (sc->bios_control & CFBIOSEN)
1581 		ahc->flags |= AHC_BIOS_ENABLED;
1582 	if (ahc->features & AHC_ULTRA
1583 	 && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1584 		/* Should we enable Ultra mode? */
1585 		if (!(sc->adapter_control & CFULTRAEN))
1586 			/* Treat us as a non-ultra card */
1587 			ultraenb = 0;
1588 	}
1589 
1590 	if (sc->signature == CFSIGNATURE
1591 	 || sc->signature == CFSIGNATURE2) {
1592 		uint32_t devconfig;
1593 
1594 		/* Honor the STPWLEVEL settings */
1595 		devconfig = aic_pci_read_config(ahc->dev_softc,
1596 						DEVCONFIG, /*bytes*/4);
1597 		devconfig &= ~STPWLEVEL;
1598 		if ((sc->bios_control & CFSTPWLEVEL) != 0)
1599 			devconfig |= STPWLEVEL;
1600 		aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
1601 				     devconfig, /*bytes*/4);
1602 	}
1603 	/* Set SCSICONF info */
1604 	ahc_outb(ahc, SCSICONF, scsi_conf);
1605 	ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1606 	ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1607 	ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1608 	ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1609 }
1610 
1611 static void
1612 configure_termination(struct ahc_softc *ahc,
1613 		      struct seeprom_descriptor *sd,
1614 		      u_int adapter_control,
1615 		      u_int *sxfrctl1)
1616 {
1617 	uint8_t brddat;
1618 
1619 	brddat = 0;
1620 
1621 	/*
1622 	 * Update the settings in sxfrctl1 to match the
1623 	 * termination settings
1624 	 */
1625 	*sxfrctl1 = 0;
1626 
1627 	/*
1628 	 * SEECS must be on for the GALS to latch
1629 	 * the data properly.  Be sure to leave MS
1630 	 * on or we will release the seeprom.
1631 	 */
1632 	SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1633 	if ((adapter_control & CFAUTOTERM) != 0
1634 	 || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1635 		int internal50_present;
1636 		int internal68_present;
1637 		int externalcable_present;
1638 		int eeprom_present;
1639 		int enableSEC_low;
1640 		int enableSEC_high;
1641 		int enablePRI_low;
1642 		int enablePRI_high;
1643 		int sum;
1644 
1645 		enableSEC_low = 0;
1646 		enableSEC_high = 0;
1647 		enablePRI_low = 0;
1648 		enablePRI_high = 0;
1649 		if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1650 			ahc_new_term_detect(ahc, &enableSEC_low,
1651 					    &enableSEC_high,
1652 					    &enablePRI_low,
1653 					    &enablePRI_high,
1654 					    &eeprom_present);
1655 			if ((adapter_control & CFSEAUTOTERM) == 0) {
1656 				if (bootverbose)
1657 					printf("%s: Manual SE Termination\n",
1658 					       ahc_name(ahc));
1659 				enableSEC_low = (adapter_control & CFSELOWTERM);
1660 				enableSEC_high =
1661 				    (adapter_control & CFSEHIGHTERM);
1662 			}
1663 			if ((adapter_control & CFAUTOTERM) == 0) {
1664 				if (bootverbose)
1665 					printf("%s: Manual LVD Termination\n",
1666 					       ahc_name(ahc));
1667 				enablePRI_low = (adapter_control & CFSTERM);
1668 				enablePRI_high = (adapter_control & CFWSTERM);
1669 			}
1670 			/* Make the table calculations below happy */
1671 			internal50_present = 0;
1672 			internal68_present = 1;
1673 			externalcable_present = 1;
1674 		} else if ((ahc->features & AHC_SPIOCAP) != 0) {
1675 			aic785X_cable_detect(ahc, &internal50_present,
1676 					     &externalcable_present,
1677 					     &eeprom_present);
1678 			/* Can never support a wide connector. */
1679 			internal68_present = 0;
1680 		} else {
1681 			aic787X_cable_detect(ahc, &internal50_present,
1682 					     &internal68_present,
1683 					     &externalcable_present,
1684 					     &eeprom_present);
1685 		}
1686 
1687 		if ((ahc->features & AHC_WIDE) == 0)
1688 			internal68_present = 0;
1689 
1690 		if (bootverbose
1691 		 && (ahc->features & AHC_ULTRA2) == 0) {
1692 			printf("%s: internal 50 cable %s present",
1693 			       ahc_name(ahc),
1694 			       internal50_present ? "is":"not");
1695 
1696 			if ((ahc->features & AHC_WIDE) != 0)
1697 				printf(", internal 68 cable %s present",
1698 				       internal68_present ? "is":"not");
1699 			printf("\n%s: external cable %s present\n",
1700 			       ahc_name(ahc),
1701 			       externalcable_present ? "is":"not");
1702 		}
1703 		if (bootverbose)
1704 			printf("%s: BIOS eeprom %s present\n",
1705 			       ahc_name(ahc), eeprom_present ? "is" : "not");
1706 
1707 		if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1708 			/*
1709 			 * The 50 pin connector is a separate bus,
1710 			 * so force it to always be terminated.
1711 			 * In the future, perform current sensing
1712 			 * to determine if we are in the middle of
1713 			 * a properly terminated bus.
1714 			 */
1715 			internal50_present = 0;
1716 		}
1717 
1718 		/*
1719 		 * Now set the termination based on what
1720 		 * we found.
1721 		 * Flash Enable = BRDDAT7
1722 		 * Secondary High Term Enable = BRDDAT6
1723 		 * Secondary Low Term Enable = BRDDAT5 (7890)
1724 		 * Primary High Term Enable = BRDDAT4 (7890)
1725 		 */
1726 		if ((ahc->features & AHC_ULTRA2) == 0
1727 		 && (internal50_present != 0)
1728 		 && (internal68_present != 0)
1729 		 && (externalcable_present != 0)) {
1730 			printf("%s: Illegal cable configuration!!. "
1731 			       "Only two connectors on the "
1732 			       "adapter may be used at a "
1733 			       "time!\n", ahc_name(ahc));
1734 
1735 			/*
1736 			 * Pretend there are no cables in the hope
1737 			 * that having all of the termination on
1738 			 * gives us a more stable bus.
1739 			 */
1740 		 	internal50_present = 0;
1741 			internal68_present = 0;
1742 			externalcable_present = 0;
1743 		}
1744 
1745 		if ((ahc->features & AHC_WIDE) != 0
1746 		 && ((externalcable_present == 0)
1747 		  || (internal68_present == 0)
1748 		  || (enableSEC_high != 0))) {
1749 			brddat |= BRDDAT6;
1750 			if (bootverbose) {
1751 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1752 					printf("%s: 68 pin termination "
1753 					       "Enabled\n", ahc_name(ahc));
1754 				else
1755 					printf("%s: %sHigh byte termination "
1756 					       "Enabled\n", ahc_name(ahc),
1757 					       enableSEC_high ? "Secondary "
1758 							      : "");
1759 			}
1760 		}
1761 
1762 		sum = internal50_present + internal68_present
1763 		    + externalcable_present;
1764 		if (sum < 2 || (enableSEC_low != 0)) {
1765 			if ((ahc->features & AHC_ULTRA2) != 0)
1766 				brddat |= BRDDAT5;
1767 			else
1768 				*sxfrctl1 |= STPWEN;
1769 			if (bootverbose) {
1770 				if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1771 					printf("%s: 50 pin termination "
1772 					       "Enabled\n", ahc_name(ahc));
1773 				else
1774 					printf("%s: %sLow byte termination "
1775 					       "Enabled\n", ahc_name(ahc),
1776 					       enableSEC_low ? "Secondary "
1777 							     : "");
1778 			}
1779 		}
1780 
1781 		if (enablePRI_low != 0) {
1782 			*sxfrctl1 |= STPWEN;
1783 			if (bootverbose)
1784 				printf("%s: Primary Low Byte termination "
1785 				       "Enabled\n", ahc_name(ahc));
1786 		}
1787 
1788 		/*
1789 		 * Setup STPWEN before setting up the rest of
1790 		 * the termination per the tech note on the U160 cards.
1791 		 */
1792 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1793 
1794 		if (enablePRI_high != 0) {
1795 			brddat |= BRDDAT4;
1796 			if (bootverbose)
1797 				printf("%s: Primary High Byte "
1798 				       "termination Enabled\n",
1799 				       ahc_name(ahc));
1800 		}
1801 
1802 		write_brdctl(ahc, brddat);
1803 
1804 	} else {
1805 		if ((adapter_control & CFSTERM) != 0) {
1806 			*sxfrctl1 |= STPWEN;
1807 
1808 			if (bootverbose)
1809 				printf("%s: %sLow byte termination Enabled\n",
1810 				       ahc_name(ahc),
1811 				       (ahc->features & AHC_ULTRA2) ? "Primary "
1812 								    : "");
1813 		}
1814 
1815 		if ((adapter_control & CFWSTERM) != 0
1816 		 && (ahc->features & AHC_WIDE) != 0) {
1817 			brddat |= BRDDAT6;
1818 			if (bootverbose)
1819 				printf("%s: %sHigh byte termination Enabled\n",
1820 				       ahc_name(ahc),
1821 				       (ahc->features & AHC_ULTRA2)
1822 				     ? "Secondary " : "");
1823 		}
1824 
1825 		/*
1826 		 * Setup STPWEN before setting up the rest of
1827 		 * the termination per the tech note on the U160 cards.
1828 		 */
1829 		ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1830 
1831 		if ((ahc->features & AHC_WIDE) != 0)
1832 			write_brdctl(ahc, brddat);
1833 	}
1834 	SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1835 }
1836 
1837 static void
1838 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1839 		    int *enableSEC_high, int *enablePRI_low,
1840 		    int *enablePRI_high, int *eeprom_present)
1841 {
1842 	uint8_t brdctl;
1843 
1844 	/*
1845 	 * BRDDAT7 = Eeprom
1846 	 * BRDDAT6 = Enable Secondary High Byte termination
1847 	 * BRDDAT5 = Enable Secondary Low Byte termination
1848 	 * BRDDAT4 = Enable Primary high byte termination
1849 	 * BRDDAT3 = Enable Primary low byte termination
1850 	 */
1851 	brdctl = read_brdctl(ahc);
1852 	*eeprom_present = brdctl & BRDDAT7;
1853 	*enableSEC_high = (brdctl & BRDDAT6);
1854 	*enableSEC_low = (brdctl & BRDDAT5);
1855 	*enablePRI_high = (brdctl & BRDDAT4);
1856 	*enablePRI_low = (brdctl & BRDDAT3);
1857 }
1858 
1859 static void
1860 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1861 		     int *internal68_present, int *externalcable_present,
1862 		     int *eeprom_present)
1863 {
1864 	uint8_t brdctl;
1865 
1866 	/*
1867 	 * First read the status of our cables.
1868 	 * Set the rom bank to 0 since the
1869 	 * bank setting serves as a multiplexor
1870 	 * for the cable detection logic.
1871 	 * BRDDAT5 controls the bank switch.
1872 	 */
1873 	write_brdctl(ahc, 0);
1874 
1875 	/*
1876 	 * Now read the state of the internal
1877 	 * connectors.  BRDDAT6 is INT50 and
1878 	 * BRDDAT7 is INT68.
1879 	 */
1880 	brdctl = read_brdctl(ahc);
1881 	*internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1882 	*internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1883 
1884 	/*
1885 	 * Set the rom bank to 1 and determine
1886 	 * the other signals.
1887 	 */
1888 	write_brdctl(ahc, BRDDAT5);
1889 
1890 	/*
1891 	 * Now read the state of the external
1892 	 * connectors.  BRDDAT6 is EXT68 and
1893 	 * BRDDAT7 is EPROMPS.
1894 	 */
1895 	brdctl = read_brdctl(ahc);
1896 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1897 	*eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1898 }
1899 
1900 static void
1901 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1902 		     int *externalcable_present, int *eeprom_present)
1903 {
1904 	uint8_t brdctl;
1905 	uint8_t spiocap;
1906 
1907 	spiocap = ahc_inb(ahc, SPIOCAP);
1908 	spiocap &= ~SOFTCMDEN;
1909 	spiocap |= EXT_BRDCTL;
1910 	ahc_outb(ahc, SPIOCAP, spiocap);
1911 	ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1912 	ahc_flush_device_writes(ahc);
1913 	aic_delay(500);
1914 	ahc_outb(ahc, BRDCTL, 0);
1915 	ahc_flush_device_writes(ahc);
1916 	aic_delay(500);
1917 	brdctl = ahc_inb(ahc, BRDCTL);
1918 	*internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1919 	*externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1920 	*eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1921 }
1922 
1923 int
1924 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1925 {
1926 	int wait;
1927 
1928 	if ((ahc->features & AHC_SPIOCAP) != 0
1929 	 && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1930 		return (0);
1931 
1932 	/*
1933 	 * Request access of the memory port.  When access is
1934 	 * granted, SEERDY will go high.  We use a 1 second
1935 	 * timeout which should be near 1 second more than
1936 	 * is needed.  Reason: after the chip reset, there
1937 	 * should be no contention.
1938 	 */
1939 	SEEPROM_OUTB(sd, sd->sd_MS);
1940 	wait = 1000;  /* 1 second timeout in msec */
1941 	while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1942 		aic_delay(1000);  /* delay 1 msec */
1943 	}
1944 	if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1945 		SEEPROM_OUTB(sd, 0);
1946 		return (0);
1947 	}
1948 	return(1);
1949 }
1950 
1951 void
1952 ahc_release_seeprom(struct seeprom_descriptor *sd)
1953 {
1954 	/* Release access to the memory port and the serial EEPROM. */
1955 	SEEPROM_OUTB(sd, 0);
1956 }
1957 
1958 static void
1959 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1960 {
1961 	uint8_t brdctl;
1962 
1963 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1964 		brdctl = BRDSTB;
1965 	 	if (ahc->channel == 'B')
1966 			brdctl |= BRDCS;
1967 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
1968 		brdctl = 0;
1969 	} else {
1970 		brdctl = BRDSTB|BRDCS;
1971 	}
1972 	ahc_outb(ahc, BRDCTL, brdctl);
1973 	ahc_flush_device_writes(ahc);
1974 	brdctl |= value;
1975 	ahc_outb(ahc, BRDCTL, brdctl);
1976 	ahc_flush_device_writes(ahc);
1977 	if ((ahc->features & AHC_ULTRA2) != 0)
1978 		brdctl |= BRDSTB_ULTRA2;
1979 	else
1980 		brdctl &= ~BRDSTB;
1981 	ahc_outb(ahc, BRDCTL, brdctl);
1982 	ahc_flush_device_writes(ahc);
1983 	if ((ahc->features & AHC_ULTRA2) != 0)
1984 		brdctl = 0;
1985 	else
1986 		brdctl &= ~BRDCS;
1987 	ahc_outb(ahc, BRDCTL, brdctl);
1988 }
1989 
1990 static uint8_t
1991 read_brdctl(struct ahc_softc *ahc)
1992 {
1993 	uint8_t brdctl;
1994 	uint8_t value;
1995 
1996 	if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1997 		brdctl = BRDRW;
1998 	 	if (ahc->channel == 'B')
1999 			brdctl |= BRDCS;
2000 	} else if ((ahc->features & AHC_ULTRA2) != 0) {
2001 		brdctl = BRDRW_ULTRA2;
2002 	} else {
2003 		brdctl = BRDRW|BRDCS;
2004 	}
2005 	ahc_outb(ahc, BRDCTL, brdctl);
2006 	ahc_flush_device_writes(ahc);
2007 	value = ahc_inb(ahc, BRDCTL);
2008 	ahc_outb(ahc, BRDCTL, 0);
2009 	return (value);
2010 }
2011 
2012 static void
2013 ahc_pci_intr(struct ahc_softc *ahc)
2014 {
2015 	u_int error;
2016 	u_int status1;
2017 
2018 	error = ahc_inb(ahc, ERROR);
2019 	if ((error & PCIERRSTAT) == 0)
2020 		return;
2021 
2022 	status1 = aic_pci_read_config(ahc->dev_softc,
2023 				      PCIR_STATUS + 1, /*bytes*/1);
2024 
2025 	if ((status1 & ~DPE) != 0
2026 	 || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2027 		printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
2028 		       ahc_name(ahc),
2029 		       ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
2030 	}
2031 
2032 	if (status1 & DPE
2033 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2034 		ahc->pci_target_perr_count++;
2035 		printf("%s: Data Parity Error Detected during address "
2036 		       "or write data phase\n", ahc_name(ahc));
2037 	}
2038 	if (status1 & SSE) {
2039 		printf("%s: Signal System Error Detected\n", ahc_name(ahc));
2040 	}
2041 	if (status1 & RMA) {
2042 		printf("%s: Received a Master Abort\n", ahc_name(ahc));
2043 	}
2044 	if (status1 & RTA) {
2045 		printf("%s: Received a Target Abort\n", ahc_name(ahc));
2046 	}
2047 	if (status1 & STA) {
2048 		printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
2049 	}
2050 	if (status1 & DPR) {
2051 		printf("%s: Data Parity Error has been reported via PERR#\n",
2052 		       ahc_name(ahc));
2053 	}
2054 
2055 	/* Clear latched errors. */
2056 	aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
2057 			     status1, /*bytes*/1);
2058 
2059 	if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
2060 		printf("%s: Latched PCIERR interrupt with "
2061 		       "no status bits set\n", ahc_name(ahc));
2062 	} else {
2063 		ahc_outb(ahc, CLRINT, CLRPARERR);
2064 	}
2065 
2066 	if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
2067 	 && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2068 		printf(
2069 "%s: WARNING WARNING WARNING WARNING\n"
2070 "%s: Too many PCI parity errors observed as a target.\n"
2071 "%s: Some device on this PCI bus is generating bad parity.\n"
2072 "%s: This is an error *observed by*, not *generated by*, %s.\n"
2073 "%s: PCI parity error checking has been disabled.\n"
2074 "%s: WARNING WARNING WARNING WARNING\n",
2075 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2076 		       ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2077 		       ahc_name(ahc));
2078 		ahc->seqctl |= FAILDIS;
2079 		ahc->flags |= AHC_DISABLE_PCI_PERR;
2080 		ahc_outb(ahc, SEQCTL, ahc->seqctl);
2081 	}
2082 	ahc_unpause(ahc);
2083 }
2084 
2085 static int
2086 ahc_pci_chip_init(struct ahc_softc *ahc)
2087 {
2088 	ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2089 	ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2090 	if ((ahc->features & AHC_DT) != 0) {
2091 		u_int sfunct;
2092 
2093 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2094 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2095 		ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2096 		ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2097 		ahc_outb(ahc, SFUNCT, sfunct);
2098 		ahc_outb(ahc, CRCCONTROL1,
2099 			 ahc->bus_softc.pci_softc.crccontrol1);
2100 	}
2101 	if ((ahc->features & AHC_MULTI_FUNC) != 0)
2102 		ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2103 
2104 	if ((ahc->features & AHC_ULTRA2) != 0)
2105 		ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2106 
2107 	return (ahc_chip_init(ahc));
2108 }
2109 
2110 static int
2111 ahc_pci_suspend(struct ahc_softc *ahc)
2112 {
2113 	return (ahc_suspend(ahc));
2114 }
2115 
2116 static int
2117 ahc_pci_resume(struct ahc_softc *ahc)
2118 {
2119 
2120 	aic_power_state_change(ahc, AIC_POWER_STATE_D0);
2121 
2122 	/*
2123 	 * We assume that the OS has restored our register
2124 	 * mappings, etc.  Just update the config space registers
2125 	 * that the OS doesn't know about and rely on our chip
2126 	 * reset handler to handle the rest.
2127 	 */
2128 	aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
2129 			     ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2130 	aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2131 			     ahc->bus_softc.pci_softc.command, /*bytes*/1);
2132 	aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2133 			     ahc->bus_softc.pci_softc.csize_lattime,
2134 			     /*bytes*/1);
2135 	if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2136 		struct	seeprom_descriptor sd;
2137 		u_int	sxfrctl1;
2138 
2139 		sd.sd_ahc = ahc;
2140 		sd.sd_control_offset = SEECTL;
2141 		sd.sd_status_offset = SEECTL;
2142 		sd.sd_dataout_offset = SEECTL;
2143 
2144 		ahc_acquire_seeprom(ahc, &sd);
2145 		configure_termination(ahc, &sd,
2146 				      ahc->seep_config->adapter_control,
2147 				      &sxfrctl1);
2148 		ahc_release_seeprom(&sd);
2149 	}
2150 	return (ahc_resume(ahc));
2151 }
2152 
2153 static int
2154 ahc_aic785X_setup(struct ahc_softc *ahc)
2155 {
2156 	aic_dev_softc_t pci;
2157 	uint8_t rev;
2158 
2159 	pci = ahc->dev_softc;
2160 	ahc->channel = 'A';
2161 	ahc->chip = AHC_AIC7850;
2162 	ahc->features = AHC_AIC7850_FE;
2163 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2164 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2165 	if (rev >= 1)
2166 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2167 	ahc->instruction_ram_size = 512;
2168 	return (0);
2169 }
2170 
2171 static int
2172 ahc_aic7860_setup(struct ahc_softc *ahc)
2173 {
2174 	aic_dev_softc_t pci;
2175 	uint8_t rev;
2176 
2177 	pci = ahc->dev_softc;
2178 	ahc->channel = 'A';
2179 	ahc->chip = AHC_AIC7860;
2180 	ahc->features = AHC_AIC7860_FE;
2181 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2182 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2183 	if (rev >= 1)
2184 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2185 	ahc->instruction_ram_size = 512;
2186 	return (0);
2187 }
2188 
2189 static int
2190 ahc_apa1480_setup(struct ahc_softc *ahc)
2191 {
2192 	int error;
2193 
2194 	error = ahc_aic7860_setup(ahc);
2195 	if (error != 0)
2196 		return (error);
2197 	ahc->features |= AHC_REMOVABLE;
2198 	return (0);
2199 }
2200 
2201 static int
2202 ahc_aic7870_setup(struct ahc_softc *ahc)
2203 {
2204 
2205 	ahc->channel = 'A';
2206 	ahc->chip = AHC_AIC7870;
2207 	ahc->features = AHC_AIC7870_FE;
2208 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2209 	ahc->instruction_ram_size = 512;
2210 	return (0);
2211 }
2212 
2213 static int
2214 ahc_aha394X_setup(struct ahc_softc *ahc)
2215 {
2216 	int error;
2217 
2218 	error = ahc_aic7870_setup(ahc);
2219 	if (error == 0)
2220 		error = ahc_aha394XX_setup(ahc);
2221 	return (error);
2222 }
2223 
2224 static int
2225 ahc_aha398X_setup(struct ahc_softc *ahc)
2226 {
2227 	int error;
2228 
2229 	error = ahc_aic7870_setup(ahc);
2230 	if (error == 0)
2231 		error = ahc_aha398XX_setup(ahc);
2232 	return (error);
2233 }
2234 
2235 static int
2236 ahc_aha494X_setup(struct ahc_softc *ahc)
2237 {
2238 	int error;
2239 
2240 	error = ahc_aic7870_setup(ahc);
2241 	if (error == 0)
2242 		error = ahc_aha494XX_setup(ahc);
2243 	return (error);
2244 }
2245 
2246 static int
2247 ahc_aic7880_setup(struct ahc_softc *ahc)
2248 {
2249 	aic_dev_softc_t pci;
2250 	uint8_t rev;
2251 
2252 	pci = ahc->dev_softc;
2253 	ahc->channel = 'A';
2254 	ahc->chip = AHC_AIC7880;
2255 	ahc->features = AHC_AIC7880_FE;
2256 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2257 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2258 	if (rev >= 1) {
2259 		ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2260 	} else {
2261 		ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2262 	}
2263 	ahc->instruction_ram_size = 512;
2264 	return (0);
2265 }
2266 
2267 static int
2268 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2269 {
2270 
2271 	ahc->flags |= AHC_INT50_SPEEDFLEX;
2272 	return (ahc_aic7880_setup(ahc));
2273 }
2274 
2275 static int
2276 ahc_aha394XU_setup(struct ahc_softc *ahc)
2277 {
2278 	int error;
2279 
2280 	error = ahc_aic7880_setup(ahc);
2281 	if (error == 0)
2282 		error = ahc_aha394XX_setup(ahc);
2283 	return (error);
2284 }
2285 
2286 static int
2287 ahc_aha398XU_setup(struct ahc_softc *ahc)
2288 {
2289 	int error;
2290 
2291 	error = ahc_aic7880_setup(ahc);
2292 	if (error == 0)
2293 		error = ahc_aha398XX_setup(ahc);
2294 	return (error);
2295 }
2296 
2297 static int
2298 ahc_aic7890_setup(struct ahc_softc *ahc)
2299 {
2300 	aic_dev_softc_t pci;
2301 	uint8_t rev;
2302 
2303 	pci = ahc->dev_softc;
2304 	ahc->channel = 'A';
2305 	ahc->chip = AHC_AIC7890;
2306 	ahc->features = AHC_AIC7890_FE;
2307 	ahc->flags |= AHC_NEWEEPROM_FMT;
2308 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2309 	if (rev == 0)
2310 		ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2311 	ahc->instruction_ram_size = 768;
2312 	return (0);
2313 }
2314 
2315 static int
2316 ahc_aic7892_setup(struct ahc_softc *ahc)
2317 {
2318 
2319 	ahc->channel = 'A';
2320 	ahc->chip = AHC_AIC7892;
2321 	ahc->features = AHC_AIC7892_FE;
2322 	ahc->flags |= AHC_NEWEEPROM_FMT;
2323 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2324 	ahc->instruction_ram_size = 1024;
2325 	return (0);
2326 }
2327 
2328 static int
2329 ahc_aic7895_setup(struct ahc_softc *ahc)
2330 {
2331 	aic_dev_softc_t pci;
2332 	uint8_t rev;
2333 
2334 	pci = ahc->dev_softc;
2335 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2336 	/*
2337 	 * The 'C' revision of the aic7895 has a few additional features.
2338 	 */
2339 	rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2340 	if (rev >= 4) {
2341 		ahc->chip = AHC_AIC7895C;
2342 		ahc->features = AHC_AIC7895C_FE;
2343 	} else  {
2344 		u_int command;
2345 
2346 		ahc->chip = AHC_AIC7895;
2347 		ahc->features = AHC_AIC7895_FE;
2348 
2349 		/*
2350 		 * The BIOS disables the use of MWI transactions
2351 		 * since it does not have the MWI bug work around
2352 		 * we have.  Disabling MWI reduces performance, so
2353 		 * turn it on again.
2354 		 */
2355 		command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2356 		command |= PCIM_CMD_MWRICEN;
2357 		aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2358 		ahc->bugs |= AHC_PCI_MWI_BUG;
2359 	}
2360 	/*
2361 	 * XXX Does CACHETHEN really not work???  What about PCI retry?
2362 	 * on C level chips.  Need to test, but for now, play it safe.
2363 	 */
2364 	ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2365 		  |  AHC_CACHETHEN_BUG;
2366 
2367 #if 0
2368 	uint32_t devconfig;
2369 
2370 	/*
2371 	 * Cachesize must also be zero due to stray DAC
2372 	 * problem when sitting behind some bridges.
2373 	 */
2374 	aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2375 	devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2376 	devconfig |= MRDCEN;
2377 	aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2378 #endif
2379 	ahc->flags |= AHC_NEWEEPROM_FMT;
2380 	ahc->instruction_ram_size = 512;
2381 	return (0);
2382 }
2383 
2384 static int
2385 ahc_aic7896_setup(struct ahc_softc *ahc)
2386 {
2387 	aic_dev_softc_t pci;
2388 
2389 	pci = ahc->dev_softc;
2390 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2391 	ahc->chip = AHC_AIC7896;
2392 	ahc->features = AHC_AIC7896_FE;
2393 	ahc->flags |= AHC_NEWEEPROM_FMT;
2394 	ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2395 	ahc->instruction_ram_size = 768;
2396 	return (0);
2397 }
2398 
2399 static int
2400 ahc_aic7899_setup(struct ahc_softc *ahc)
2401 {
2402 	aic_dev_softc_t pci;
2403 
2404 	pci = ahc->dev_softc;
2405 	ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2406 	ahc->chip = AHC_AIC7899;
2407 	ahc->features = AHC_AIC7899_FE;
2408 	ahc->flags |= AHC_NEWEEPROM_FMT;
2409 	ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2410 	ahc->instruction_ram_size = 1024;
2411 	return (0);
2412 }
2413 
2414 static int
2415 ahc_aha29160C_setup(struct ahc_softc *ahc)
2416 {
2417 	int error;
2418 
2419 	error = ahc_aic7899_setup(ahc);
2420 	if (error != 0)
2421 		return (error);
2422 	ahc->features |= AHC_REMOVABLE;
2423 	return (0);
2424 }
2425 
2426 static int
2427 ahc_raid_setup(struct ahc_softc *ahc)
2428 {
2429 	printf("RAID functionality unsupported\n");
2430 	return (ENXIO);
2431 }
2432 
2433 static int
2434 ahc_aha394XX_setup(struct ahc_softc *ahc)
2435 {
2436 	aic_dev_softc_t pci;
2437 
2438 	pci = ahc->dev_softc;
2439 	switch (aic_get_pci_slot(pci)) {
2440 	case AHC_394X_SLOT_CHANNEL_A:
2441 		ahc->channel = 'A';
2442 		break;
2443 	case AHC_394X_SLOT_CHANNEL_B:
2444 		ahc->channel = 'B';
2445 		break;
2446 	default:
2447 		printf("adapter at unexpected slot %d\n"
2448 		       "unable to map to a channel\n",
2449 		       aic_get_pci_slot(pci));
2450 		ahc->channel = 'A';
2451 	}
2452 	return (0);
2453 }
2454 
2455 static int
2456 ahc_aha398XX_setup(struct ahc_softc *ahc)
2457 {
2458 	aic_dev_softc_t pci;
2459 
2460 	pci = ahc->dev_softc;
2461 	switch (aic_get_pci_slot(pci)) {
2462 	case AHC_398X_SLOT_CHANNEL_A:
2463 		ahc->channel = 'A';
2464 		break;
2465 	case AHC_398X_SLOT_CHANNEL_B:
2466 		ahc->channel = 'B';
2467 		break;
2468 	case AHC_398X_SLOT_CHANNEL_C:
2469 		ahc->channel = 'C';
2470 		break;
2471 	default:
2472 		printf("adapter at unexpected slot %d\n"
2473 		       "unable to map to a channel\n",
2474 		       aic_get_pci_slot(pci));
2475 		ahc->channel = 'A';
2476 		break;
2477 	}
2478 	ahc->flags |= AHC_LARGE_SEEPROM;
2479 	return (0);
2480 }
2481 
2482 static int
2483 ahc_aha494XX_setup(struct ahc_softc *ahc)
2484 {
2485 	aic_dev_softc_t pci;
2486 
2487 	pci = ahc->dev_softc;
2488 	switch (aic_get_pci_slot(pci)) {
2489 	case AHC_494X_SLOT_CHANNEL_A:
2490 		ahc->channel = 'A';
2491 		break;
2492 	case AHC_494X_SLOT_CHANNEL_B:
2493 		ahc->channel = 'B';
2494 		break;
2495 	case AHC_494X_SLOT_CHANNEL_C:
2496 		ahc->channel = 'C';
2497 		break;
2498 	case AHC_494X_SLOT_CHANNEL_D:
2499 		ahc->channel = 'D';
2500 		break;
2501 	default:
2502 		printf("adapter at unexpected slot %d\n"
2503 		       "unable to map to a channel\n",
2504 		       aic_get_pci_slot(pci));
2505 		ahc->channel = 'A';
2506 	}
2507 	ahc->flags |= AHC_LARGE_SEEPROM;
2508 	return (0);
2509 }
2510