xref: /netbsd/sys/dev/pci/ahc_pci.c (revision bf9ec67e)
1 /*	$NetBSD: ahc_pci.c,v 1.32 2001/11/21 19:01:33 wiz Exp $	*/
2 
3 /*
4  * Product specific probe and attach routines for:
5  *      3940, 2940, aic7895, aic7890, aic7880,
6  *	aic7870, aic7860 and aic7850 SCSI controllers
7  *
8  * Copyright (c) 1994, 1995, 1996, 1997, 1998, 1999, 2000 Justin T. Gibbs.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions, and the following disclaimer,
16  *    without modification.
17  * 2. The name of the author may not be used to endorse or promote products
18  *    derived from this software without specific prior written permission.
19  *
20  * Alternatively, this software may be distributed under the terms of the
21  * the GNU Public License ("GPL").
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
27  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  * $FreeBSD: src/sys/dev/aic7xxx/ahc_pci.c,v 1.28 2000/02/09 21:00:22 gibbs Exp $
36  */
37 
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: ahc_pci.c,v 1.32 2001/11/21 19:01:33 wiz Exp $");
40 
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/malloc.h>
44 #include <sys/kernel.h>
45 #include <sys/queue.h>
46 #include <sys/device.h>
47 #include <sys/reboot.h>
48 
49 #include <machine/bus.h>
50 #include <machine/intr.h>
51 
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcivar.h>
54 
55 /* XXXX some i386 on-board chips act weird when memory-mapped */
56 #ifndef __i386__
57 #define AHC_ALLOW_MEMIO
58 #endif
59 
60 #define AHC_PCI_IOADDR	PCI_MAPREG_START	/* I/O Address */
61 #define AHC_PCI_MEMADDR	(PCI_MAPREG_START + 4)	/* Mem I/O Address */
62 
63 #include <dev/scsipi/scsi_all.h>
64 #include <dev/scsipi/scsipi_all.h>
65 #include <dev/scsipi/scsiconf.h>
66 
67 #include <dev/ic/aic7xxxvar.h>
68 #include <dev/ic/smc93cx6var.h>
69 
70 #include <dev/microcode/aic7xxx/aic7xxx_reg.h>
71 
72 struct ahc_pci_busdata {
73 	pci_chipset_tag_t pc;
74 	pcitag_t tag;
75 	u_int dev;
76 	u_int func;
77 };
78 
79 static __inline u_int64_t
80 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
81 {
82 	u_int64_t id;
83 
84 	id = subvendor
85 	   | (subdevice << 16)
86 	   | ((u_int64_t)vendor << 32)
87 	   | ((u_int64_t)device << 48);
88 
89 	return (id);
90 }
91 
92 #define ID_ALL_MASK		0xFFFFFFFFFFFFFFFFull
93 #define ID_DEV_VENDOR_MASK	0xFFFFFFFF00000000ull
94 #define ID_AIC7850		0x5078900400000000ull
95 #define ID_AHA_2910_15_20_30C	0x5078900478509004ull
96 #define ID_AIC7855		0x5578900400000000ull
97 #define ID_AIC7859		0x3860900400000000ull
98 #define ID_AHA_2930CU		0x3860900438699004ull
99 #define ID_AIC7860		0x6078900400000000ull
100 #define ID_AIC7860C		0x6078900478609004ull
101 #define ID_AHA_2940AU_0		0x6178900400000000ull
102 #define ID_AHA_2940AU_1		0x6178900478619004ull
103 #define ID_AHA_2940AU_CN	0x2178900478219004ull
104 #define ID_AHA_2930C_VAR	0x6038900438689004ull
105 
106 #define ID_AIC7870		0x7078900400000000ull
107 #define ID_AHA_2940		0x7178900400000000ull
108 #define ID_AHA_3940		0x7278900400000000ull
109 #define ID_AHA_398X		0x7378900400000000ull
110 #define ID_AHA_2944		0x7478900400000000ull
111 #define ID_AHA_3944		0x7578900400000000ull
112 
113 #define ID_AIC7880		0x8078900400000000ull
114 #define ID_AIC7880_B		0x8078900478809004ull
115 #define ID_AHA_2940U		0x8178900400000000ull
116 #define ID_AHA_3940U		0x8278900400000000ull
117 #define ID_AHA_2944U		0x8478900400000000ull
118 #define ID_AHA_3944U		0x8578900400000000ull
119 #define ID_AHA_398XU		0x8378900400000000ull
120 #define ID_AHA_4944U		0x8678900400000000ull
121 #define ID_AHA_2940UB		0x8178900478819004ull
122 #define ID_AHA_2930U		0x8878900478889004ull
123 #define ID_AHA_2940U_PRO	0x8778900478879004ull
124 #define ID_AHA_2940U_CN		0x0078900478009004ull
125 
126 #define ID_AIC7895		0x7895900478959004ull
127 #define ID_AIC7895_RAID_PORT	0x7893900478939004ull
128 #define ID_AHA_2940U_DUAL	0x7895900478919004ull
129 #define ID_AHA_3940AU		0x7895900478929004ull
130 #define ID_AHA_3944AU		0x7895900478949004ull
131 
132 #define ID_AIC7890		0x001F9005000F9005ull
133 #define ID_AAA_131U2		0x0013900500039005ull
134 #define ID_AHA_2930U2		0x0011900501819005ull
135 #define ID_AHA_2940U2B		0x00109005A1009005ull
136 #define ID_AHA_2940U2_OEM	0x0010900521809005ull
137 #define ID_AHA_2940U2		0x00109005A1809005ull
138 #define ID_AHA_2950U2B		0x00109005E1009005ull
139 
140 #define ID_AIC7892		0x008F9005FFFF9005ull
141 #define ID_AHA_29160		0x00809005E2A09005ull
142 #define ID_AHA_29160_CPQ	0x00809005E2A00E11ull
143 #define ID_AHA_29160N		0x0080900562A09005ull
144 #define ID_AHA_29160B		0x00809005E2209005ull
145 #define ID_AHA_19160B		0x0081900562A19005ull
146 
147 #define ID_AIC7896		0x005F9005FFFF9005ull
148 #define ID_AHA_3950U2B_0	0x00509005FFFF9005ull
149 #define ID_AHA_3950U2B_1	0x00509005F5009005ull
150 #define ID_AHA_3950U2D_0	0x00519005FFFF9005ull
151 #define ID_AHA_3950U2D_1	0x00519005B5009005ull
152 
153 #define ID_AIC7899		0x00CF9005FFFF9005ull
154 #define ID_AHA_3960D		0x00C09005F6209005ull /* AKA AHA-39160 */
155 #define ID_AHA_3960D_CPQ	0x00C09005F6200E11ull
156 
157 #define ID_AIC7810		0x1078900400000000ull
158 #define ID_AIC7815		0x7815900400000000ull
159 
160 typedef int (ahc_device_setup_t)(struct pci_attach_args *, char *,
161 				 ahc_chip *, ahc_feature *, ahc_flag *);
162 
163 static ahc_device_setup_t ahc_aic7850_setup;
164 static ahc_device_setup_t ahc_aic7855_setup;
165 static ahc_device_setup_t ahc_aic7859_setup;
166 static ahc_device_setup_t ahc_aic7860_setup;
167 static ahc_device_setup_t ahc_aic7870_setup;
168 static ahc_device_setup_t ahc_aha394X_setup;
169 static ahc_device_setup_t ahc_aha398X_setup;
170 static ahc_device_setup_t ahc_aic7880_setup;
171 static ahc_device_setup_t ahc_2940Pro_setup;
172 static ahc_device_setup_t ahc_aha394XU_setup;
173 static ahc_device_setup_t ahc_aha398XU_setup;
174 static ahc_device_setup_t ahc_aic7890_setup;
175 static ahc_device_setup_t ahc_aic7892_setup;
176 static ahc_device_setup_t ahc_aic7895_setup;
177 static ahc_device_setup_t ahc_aic7896_setup;
178 static ahc_device_setup_t ahc_aic7899_setup;
179 static ahc_device_setup_t ahc_raid_setup;
180 static ahc_device_setup_t ahc_aha394XX_setup;
181 static ahc_device_setup_t ahc_aha398XX_setup;
182 
183 struct ahc_pci_identity {
184 	u_int64_t		 full_id;
185 	u_int64_t		 id_mask;
186 	const char		*name;
187 	ahc_device_setup_t	*setup;
188 };
189 
190 const struct ahc_pci_identity ahc_pci_ident_table [] =
191 {
192 	/* aic7850 based controllers */
193 	{
194 		ID_AHA_2910_15_20_30C,
195 		ID_ALL_MASK,
196 		"Adaptec 2910/15/20/30C SCSI adapter",
197 		ahc_aic7850_setup
198 	},
199 	/* aic7859 based controllers */
200 	{
201 		ID_AHA_2930CU,
202 		ID_ALL_MASK,
203 		"Adaptec 2930CU SCSI adapter",
204 		ahc_aic7859_setup
205 	},
206 	/* aic7860 based controllers */
207 	{
208 		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
209 		ID_DEV_VENDOR_MASK,
210 		"Adaptec 2940A Ultra SCSI adapter",
211 		ahc_aic7860_setup
212 	},
213 	{
214 		ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
215 		ID_DEV_VENDOR_MASK,
216 		"Adaptec 2940A/CN Ultra SCSI adapter",
217 		ahc_aic7860_setup
218 	},
219 	{
220 		ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
221 		ID_DEV_VENDOR_MASK,
222 		"Adaptec 2930C SCSI adapter (VAR)",
223 		ahc_aic7860_setup
224 	},
225 	/* aic7870 based controllers */
226 	{
227 		ID_AHA_2940,
228 		ID_ALL_MASK,
229 		"Adaptec 2940 SCSI adapter",
230 		ahc_aic7870_setup
231 	},
232 	{
233 		ID_AHA_3940,
234 		ID_ALL_MASK,
235 		"Adaptec 3940 SCSI adapter",
236 		ahc_aha394X_setup
237 	},
238 	{
239 		ID_AHA_398X,
240 		ID_ALL_MASK,
241 		"Adaptec 398X SCSI RAID adapter",
242 		ahc_aha398X_setup
243 	},
244 	{
245 		ID_AHA_2944,
246 		ID_ALL_MASK,
247 		"Adaptec 2944 SCSI adapter",
248 		ahc_aic7870_setup
249 	},
250 	{
251 		ID_AHA_3944,
252 		ID_ALL_MASK,
253 		"Adaptec 3944 SCSI adapter",
254 		ahc_aha394X_setup
255 	},
256 	/* aic7880 based controllers */
257 	{
258 		ID_AHA_2940U & ID_DEV_VENDOR_MASK,
259 		ID_DEV_VENDOR_MASK,
260 		"Adaptec 2940 Ultra SCSI adapter",
261 		ahc_aic7880_setup
262 	},
263 	{
264 		ID_AHA_3940U & ID_DEV_VENDOR_MASK,
265 		ID_DEV_VENDOR_MASK,
266 		"Adaptec 3940 Ultra SCSI adapter",
267 		ahc_aha394XU_setup
268 	},
269 	{
270 		ID_AHA_2944U & ID_DEV_VENDOR_MASK,
271 		ID_DEV_VENDOR_MASK,
272 		"Adaptec 2944 Ultra SCSI adapter",
273 		ahc_aic7880_setup
274 	},
275 	{
276 		ID_AHA_3944U & ID_DEV_VENDOR_MASK,
277 		ID_DEV_VENDOR_MASK,
278 		"Adaptec 3944 Ultra SCSI adapter",
279 		ahc_aha394XU_setup
280 	},
281 	{
282 		ID_AHA_398XU & ID_DEV_VENDOR_MASK,
283 		ID_DEV_VENDOR_MASK,
284 		"Adaptec 398X Ultra SCSI RAID adapter",
285 		ahc_aha398XU_setup
286 	},
287 	{
288 		/*
289 		 * XXX Don't know the slot numbers
290 		 * so we can't identify channels
291 		 */
292 		ID_AHA_4944U & ID_DEV_VENDOR_MASK,
293 		ID_DEV_VENDOR_MASK,
294 		"Adaptec 4944 Ultra SCSI adapter",
295 		ahc_aic7880_setup
296 	},
297 	{
298 		ID_AHA_2930U & ID_DEV_VENDOR_MASK,
299 		ID_DEV_VENDOR_MASK,
300 		"Adaptec 2930 Ultra SCSI adapter",
301 		ahc_aic7880_setup
302 	},
303 	{
304 		ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
305 		ID_DEV_VENDOR_MASK,
306 		"Adaptec 2940 Pro Ultra SCSI adapter",
307 		ahc_2940Pro_setup
308 	},
309 	{
310 		ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
311 		ID_DEV_VENDOR_MASK,
312 		"Adaptec 2940/CN Ultra SCSI adapter",
313 		ahc_aic7880_setup
314 	},
315 	/* aic7890 based controllers */
316 	{
317 		ID_AHA_2930U2,
318 		ID_ALL_MASK,
319 		"Adaptec 2930 Ultra2 SCSI adapter",
320 		ahc_aic7890_setup
321 	},
322 	{
323 		ID_AHA_2940U2B,
324 		ID_ALL_MASK,
325 		"Adaptec 2940B Ultra2 SCSI adapter",
326 		ahc_aic7890_setup
327 	},
328 	{
329 		ID_AHA_2940U2_OEM,
330 		ID_ALL_MASK,
331 		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
332 		ahc_aic7890_setup
333 	},
334 	{
335 		ID_AHA_2940U2,
336 		ID_ALL_MASK,
337 		"Adaptec 2940 Ultra2 SCSI adapter",
338 		ahc_aic7890_setup
339 	},
340 	{
341 		ID_AHA_2950U2B,
342 		ID_ALL_MASK,
343 		"Adaptec 2950 Ultra2 SCSI adapter",
344 		ahc_aic7890_setup
345 	},
346 	{
347 		ID_AAA_131U2,
348 		ID_ALL_MASK,
349 		"Adaptec AAA-131 Ultra2 RAID adapter",
350 		ahc_aic7890_setup
351 	},
352 	/* aic7892 based controllers */
353 	{
354 		ID_AHA_29160,
355 		ID_ALL_MASK,
356 		"Adaptec 29160 Ultra160 SCSI adapter",
357 		ahc_aic7892_setup
358 	},
359 	{
360 		ID_AHA_29160_CPQ,
361 		ID_ALL_MASK,
362 		"Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
363 		ahc_aic7892_setup
364 	},
365 	{
366 		ID_AHA_29160N,
367 		ID_ALL_MASK,
368 		"Adaptec 29160N Ultra160 SCSI adapter",
369 		ahc_aic7892_setup
370 	},
371 	{
372 		ID_AHA_29160B,
373 		ID_ALL_MASK,
374 		"Adaptec 29160B Ultra160 SCSI adapter",
375 		ahc_aic7892_setup
376 	},
377 	{
378 		ID_AHA_19160B,
379 		ID_ALL_MASK,
380 		"Adaptec 19160B Ultra160 SCSI adapter",
381 		ahc_aic7892_setup
382 	},
383 	/* aic7895 based controllers */
384 	{
385 		ID_AHA_2940U_DUAL,
386 		ID_ALL_MASK,
387 		"Adaptec 2940/DUAL Ultra SCSI adapter",
388 		ahc_aic7895_setup
389 	},
390 	{
391 		ID_AHA_3940AU,
392 		ID_ALL_MASK,
393 		"Adaptec 3940A Ultra SCSI adapter",
394 		ahc_aic7895_setup
395 	},
396 	{
397 		ID_AHA_3944AU,
398 		ID_ALL_MASK,
399 		"Adaptec 3944A Ultra SCSI adapter",
400 		ahc_aic7895_setup
401 	},
402 	/* aic7896/97 based controllers */
403 	{
404 		ID_AHA_3950U2B_0,
405 		ID_ALL_MASK,
406 		"Adaptec 3950B Ultra2 SCSI adapter",
407 		ahc_aic7896_setup
408 	},
409 	{
410 		ID_AHA_3950U2B_1,
411 		ID_ALL_MASK,
412 		"Adaptec 3950B Ultra2 SCSI adapter",
413 		ahc_aic7896_setup
414 	},
415 	{
416 		ID_AHA_3950U2D_0,
417 		ID_ALL_MASK,
418 		"Adaptec 3950D Ultra2 SCSI adapter",
419 		ahc_aic7896_setup
420 	},
421 	{
422 		ID_AHA_3950U2D_1,
423 		ID_ALL_MASK,
424 		"Adaptec 3950D Ultra2 SCSI adapter",
425 		ahc_aic7896_setup
426 	},
427 	/* aic7899 based controllers */
428 	{
429 		ID_AHA_3960D,
430 		ID_ALL_MASK,
431 		"Adaptec 3960D Ultra160 SCSI adapter",
432 		ahc_aic7899_setup
433 	},
434 	{
435 		ID_AHA_3960D_CPQ,
436 		ID_ALL_MASK,
437 		"Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
438 		ahc_aic7899_setup
439 	},
440 	/* Generic chip probes for devices we don't know 'exactly' */
441 	{
442 		ID_AIC7850 & ID_DEV_VENDOR_MASK,
443 		ID_DEV_VENDOR_MASK,
444 		"Adaptec aic7850 SCSI adapter",
445 		ahc_aic7850_setup
446 	},
447 	{
448 		ID_AIC7855 & ID_DEV_VENDOR_MASK,
449 		ID_DEV_VENDOR_MASK,
450 		"Adaptec aic7855 SCSI adapter",
451 		ahc_aic7855_setup
452 	},
453 	{
454 		ID_AIC7859 & ID_DEV_VENDOR_MASK,
455 		ID_DEV_VENDOR_MASK,
456 		"Adaptec aic7859 SCSI adapter",
457 		ahc_aic7859_setup
458 	},
459 	{
460 		ID_AIC7860 & ID_DEV_VENDOR_MASK,
461 		ID_DEV_VENDOR_MASK,
462 		"Adaptec aic7860 SCSI adapter",
463 		ahc_aic7860_setup
464 	},
465 	{
466 		ID_AIC7870 & ID_DEV_VENDOR_MASK,
467 		ID_DEV_VENDOR_MASK,
468 		"Adaptec aic7870 SCSI adapter",
469 		ahc_aic7870_setup
470 	},
471 	{
472 		ID_AIC7880 & ID_DEV_VENDOR_MASK,
473 		ID_DEV_VENDOR_MASK,
474 		"Adaptec aic7880 Ultra SCSI adapter",
475 		ahc_aic7880_setup
476 	},
477 	{
478 		ID_AIC7890 & ID_DEV_VENDOR_MASK,
479 		ID_DEV_VENDOR_MASK,
480 		"Adaptec aic7890/91 Ultra2 SCSI adapter",
481 		ahc_aic7890_setup
482 	},
483 	{
484 		ID_AIC7892 & ID_DEV_VENDOR_MASK,
485 		ID_DEV_VENDOR_MASK,
486 		"Adaptec aic7892 Ultra160 SCSI adapter",
487 		ahc_aic7892_setup
488 	},
489 	{
490 		ID_AIC7895 & ID_DEV_VENDOR_MASK,
491 		ID_DEV_VENDOR_MASK,
492 		"Adaptec aic7895 Ultra SCSI adapter",
493 		ahc_aic7895_setup
494 	},
495 	{
496 		ID_AIC7895_RAID_PORT & ID_DEV_VENDOR_MASK,
497 		ID_DEV_VENDOR_MASK,
498 		"Adaptec aic7895 Ultra SCSI adapter (RAID PORT)",
499 		ahc_aic7895_setup
500 	},
501 	{
502 		ID_AIC7896 & ID_DEV_VENDOR_MASK,
503 		ID_DEV_VENDOR_MASK,
504 		"Adaptec aic7896/97 Ultra2 SCSI adapter",
505 		ahc_aic7896_setup
506 	},
507 	{
508 		ID_AIC7899 & ID_DEV_VENDOR_MASK,
509 		ID_DEV_VENDOR_MASK,
510 		"Adaptec aic7899 Ultra160 SCSI adapter",
511 		ahc_aic7899_setup
512 	},
513 	{
514 		ID_AIC7810 & ID_DEV_VENDOR_MASK,
515 		ID_DEV_VENDOR_MASK,
516 		"Adaptec aic7810 RAID memory controller",
517 		ahc_raid_setup
518 	},
519 	{
520 		ID_AIC7815 & ID_DEV_VENDOR_MASK,
521 		ID_DEV_VENDOR_MASK,
522 		"Adaptec aic7815 RAID memory controller",
523 		ahc_raid_setup
524 	}
525 };
526 
527 static const int ahc_num_pci_devs =
528 	sizeof(ahc_pci_ident_table) / sizeof(*ahc_pci_ident_table);
529 
530 #define AHC_394X_SLOT_CHANNEL_A	4
531 #define AHC_394X_SLOT_CHANNEL_B	5
532 
533 #define AHC_398X_SLOT_CHANNEL_A	4
534 #define AHC_398X_SLOT_CHANNEL_B	8
535 #define AHC_398X_SLOT_CHANNEL_C	12
536 
537 #define	DEVCONFIG		0x40
538 #define		SCBSIZE32	0x00010000	/* aic789X only */
539 #define		MPORTMODE	0x00000400	/* aic7870 only */
540 #define		RAMPSM		0x00000200	/* aic7870 only */
541 #define		VOLSENSE	0x00000100
542 #define		SCBRAMSEL	0x00000080
543 #define		MRDCEN		0x00000040
544 #define		EXTSCBTIME	0x00000020	/* aic7870 only */
545 #define		EXTSCBPEN	0x00000010	/* aic7870 only */
546 #define		BERREN		0x00000008
547 #define		DACEN		0x00000004
548 #define		STPWLEVEL	0x00000002
549 #define		DIFACTNEGEN	0x00000001	/* aic7870 only */
550 
551 #define	CSIZE_LATTIME		0x0c
552 #define		CACHESIZE	0x0000003f	/* only 5 bits */
553 #define		LATTIME		0x0000ff00
554 
555 static const struct ahc_pci_identity *ahc_find_pci_device(pcireg_t, pcireg_t);
556 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
557 static void ahc_ext_scbram_config(struct ahc_softc *ahc, int enable,
558 				  int pcheck, int fast);
559 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
560 
561 int ahc_pci_probe __P((struct device *, struct cfdata *, void *));
562 void ahc_pci_attach __P((struct device *, struct device *, void *));
563 
564 /* Exported for use in the ahc_intr routine */
565 int ahc_pci_intr(struct ahc_softc *ahc);
566 
567 struct cfattach ahc_pci_ca = {
568         sizeof(struct ahc_softc), ahc_pci_probe, ahc_pci_attach
569 };
570 
571 static const struct ahc_pci_identity *
572 ahc_find_pci_device(id, subid)
573 	pcireg_t id, subid;
574 {
575 	u_int64_t  full_id;
576 	const struct	   ahc_pci_identity *entry;
577 	u_int	   i;
578 
579 	full_id = ahc_compose_id(PCI_PRODUCT(id), PCI_VENDOR(id),
580 				 PCI_PRODUCT(subid), PCI_VENDOR(subid));
581 
582 	for (i = 0; i < ahc_num_pci_devs; i++) {
583 		entry = &ahc_pci_ident_table[i];
584 		if (entry->full_id == (full_id & entry->id_mask))
585 			return (entry);
586 	}
587 	return (NULL);
588 }
589 
590 int
591 ahc_pci_probe(parent, match, aux)
592 	struct device *parent;
593 	struct cfdata *match;
594 	void *aux;
595 {
596 	struct pci_attach_args *pa = aux;
597 	const struct	   ahc_pci_identity *entry;
598 	pcireg_t   subid;
599 
600 	subid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
601 	entry = ahc_find_pci_device(pa->pa_id, subid);
602 	return entry != NULL ? 1 : 0;
603 }
604 
605 void
606 ahc_pci_attach(parent, self, aux)
607 	struct device *parent, *self;
608 	void *aux;
609 {
610 	struct pci_attach_args *pa = aux;
611 	const struct	   ahc_pci_identity *entry;
612 	struct		   ahc_softc *ahc = (void *)self;
613 	pcireg_t	   command;
614 	ahc_chip	   ahc_t = AHC_NONE;
615 	ahc_feature	   ahc_fe = AHC_FENONE;
616 	ahc_flag	   ahc_f = AHC_FNONE;
617 	u_int		   our_id = 0;
618 	u_int		   sxfrctl1;
619 	u_int		   scsiseq;
620 	int		   error;
621 	char		   channel;
622 	pcireg_t	   subid;
623 	int		   ioh_valid, memh_valid;
624 	bus_space_tag_t st, iot;
625 	bus_space_handle_t sh, ioh;
626 #ifdef AHC_ALLOW_MEMIO
627 	bus_space_tag_t memt;
628 	bus_space_handle_t memh;
629 	pcireg_t memtype;
630 #endif
631 	pci_intr_handle_t ih;
632 	const char *intrstr;
633 	struct ahc_pci_busdata *bd;
634 
635 	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
636 	subid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
637 	entry = ahc_find_pci_device(pa->pa_id, subid);
638 	if (entry == NULL)
639 		return;
640 	error = entry->setup(pa, &channel, &ahc_t, &ahc_fe, &ahc_f);
641 	if (error != 0)
642 		return;
643 
644 	ioh_valid = memh_valid = 0;
645 
646 #ifdef AHC_ALLOW_MEMIO
647 	memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, AHC_PCI_MEMADDR);
648 	switch (memtype) {
649 	case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
650 	case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
651 		memh_valid = (pci_mapreg_map(pa, AHC_PCI_MEMADDR,
652 		    memtype, 0, &memt, &memh, NULL, NULL) == 0);
653 		break;
654 	default:
655 		memh_valid = 0;
656 	}
657 #endif
658 	ioh_valid = (pci_mapreg_map(pa, AHC_PCI_IOADDR,
659 	    PCI_MAPREG_TYPE_IO, 0, &iot, &ioh, NULL, NULL) == 0);
660 
661 	if (ioh_valid) {
662 		st = iot;
663 		sh = ioh;
664 #ifdef AHC_ALLOW_MEMIO
665 	} else if (memh_valid) {
666 		st = memt;
667 		sh = memh;
668 #endif
669 	} else {
670 		printf(": unable to map registers\n");
671 		return;
672 	}
673 
674 	printf("\n");
675 
676 
677 	/* Ensure busmastering is enabled */
678 	command |= PCI_COMMAND_MASTER_ENABLE;;
679 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
680 
681 	/* On all PCI adapters, we allow SCB paging */
682 	ahc_f |= AHC_PAGESCBS;
683 	if (ahc_alloc(ahc, sh, st, pa->pa_dmat,
684 	    ahc_t|AHC_PCI, ahc_fe, ahc_f) < 0)
685 		return;
686 
687 	bd = malloc(sizeof (struct ahc_pci_busdata), M_DEVBUF, M_NOWAIT);
688 	if (bd == NULL) {
689 		printf(": unable to allocate bus-specific data\n");
690 		return;
691 	}
692 
693 	bd->pc = pa->pa_pc;
694 	bd->tag = pa->pa_tag;
695 	bd->func = pa->pa_function;
696 	bd->dev = pa->pa_device;
697 
698 	ahc->bus_data = bd;
699 	ahc->bus_intr = ahc_pci_intr;
700 	ahc->channel = channel;
701 
702 	/* Remeber how the card was setup in case there is no SEEPROM */
703 	ahc_outb(ahc, HCNTRL, ahc->pause);
704 	if ((ahc->features & AHC_ULTRA2) != 0)
705 		our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
706 	else
707 		our_id = ahc_inb(ahc, SCSIID) & OID;
708 	sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
709 	scsiseq = ahc_inb(ahc, SCSISEQ);
710 
711 	if (ahc_reset(ahc) != 0) {
712 		/* Failed */
713 		ahc_free(ahc);
714 		return;
715 	}
716 
717 	if ((ahc->features & AHC_DT) != 0) {
718 		u_int optionmode;
719 		u_int sfunct;
720 
721 		/* Perform ALT-Mode Setup */
722 		sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
723 		ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
724 		optionmode = ahc_inb(ahc, OPTIONMODE);
725 #ifdef DEBUG
726 		printf("%s: OptionMode = %x\n", ahc->sc_dev.dv_xname,
727 		    optionmode);
728 #endif
729 		ahc_outb(ahc, OPTIONMODE, OPTIONMODE_DEFAULTS);
730 		/* Send CRC info in target mode every 4K */
731 		ahc_outb(ahc, TARGCRCCNT, 0);
732 		ahc_outb(ahc, TARGCRCCNT + 1, 0x10);
733 		ahc_outb(ahc, SFUNCT, sfunct);
734 
735 		/* Normal mode setup */
736 		ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
737 					  |TARGCRCENDEN|TARGCRCCNTEN);
738 	}
739 
740 	if (pci_intr_map(pa, &ih)) {
741 		printf("%s: couldn't map interrupt\n", ahc->sc_dev.dv_xname);
742 		ahc_free(ahc);
743 		return;
744 	}
745 	intrstr = pci_intr_string(pa->pa_pc, ih);
746 	ahc->ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahc_intr, ahc);
747 	if (ahc->ih == NULL) {
748 		printf("%s: couldn't establish interrupt",
749 		       ahc->sc_dev.dv_xname);
750 		if (intrstr != NULL)
751 			printf(" at %s", intrstr);
752 		printf("\n");
753 		ahc_free(ahc);
754 		return;
755 	}
756 	if (intrstr != NULL)
757 		printf("%s: interrupting at %s\n", ahc->sc_dev.dv_xname,
758 		       intrstr);
759 
760 	/*
761 	 * Do aic7880/aic7870/aic7860/aic7850 specific initialization
762 	 */
763 	{
764 		u_int8_t sblkctl;
765 		u_int dscommand0;
766 
767 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
768 		dscommand0 |= MPARCKEN;
769 		if ((ahc->features & AHC_ULTRA2) != 0) {
770 
771 			/*
772 			 * DPARCKEN doesn't work correctly on
773 			 * some MBs so don't use it.
774 			 */
775 			dscommand0 &= ~(USCBSIZE32|DPARCKEN);
776 			dscommand0 |= CACHETHEN;
777 		}
778 
779 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
780 
781 		/* See if we have an SEEPROM and perform auto-term */
782 		check_extport(ahc, &sxfrctl1);
783 
784 		/*
785 		 * Take the LED out of diagnostic mode
786 		 */
787 		sblkctl = ahc_inb(ahc, SBLKCTL);
788 		ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
789 
790 		/*
791 		 * I don't know where this is set in the SEEPROM or by the
792 		 * BIOS, so we default to 100% on Ultra or slower controllers
793 		 * and 75% on ULTRA2 controllers.
794 		 */
795 		if ((ahc->features & AHC_ULTRA2) != 0) {
796 			ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75);
797 		} else {
798 			ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
799 		}
800 
801 		if (ahc->flags & AHC_USEDEFAULTS) {
802 			/*
803 			 * PCI Adapter default setup
804 			 * Should only be used if the adapter does not have
805 			 * an SEEPROM.
806 			 */
807 			/* See if someone else set us up already */
808 			if (scsiseq != 0) {
809 				printf("%s: Using left over BIOS settings\n",
810 					ahc_name(ahc));
811 				ahc->flags &= ~AHC_USEDEFAULTS;
812 			} else {
813 				/*
814 				 * Assume only one connector and always turn
815 				 * on termination.
816 				 */
817  				our_id = 0x07;
818 				sxfrctl1 = STPWEN;
819 			}
820 			ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
821 
822 			ahc->our_id = our_id;
823 		}
824 	}
825 
826 	/*
827 	 * Take a look to see if we have external SRAM.
828 	 * We currently do not attempt to use SRAM that is
829 	 * shared among multiple controllers.
830 	 */
831 	ahc_probe_ext_scbram(ahc);
832 
833 
834 	printf("%s: %s ", ahc_name(ahc),
835 	       ahc_chip_names[ahc->chip & AHC_CHIPID_MASK]);
836 
837 	/*
838 	 * Record our termination setting for the
839 	 * generic initialization routine.
840 	 */
841 	if ((sxfrctl1 & STPWEN) != 0)
842 		ahc->flags |= AHC_TERM_ENB_A;
843 
844 	if (ahc_init(ahc)) {
845 		ahc_free(ahc);
846 		return;
847 	}
848 
849 	ahc_attach(ahc);
850 }
851 
852 /*
853  * Test for the presence of external sram in an
854  * "unshared" configuration.
855  */
856 static int
857 ahc_ext_scbram_present(struct ahc_softc *ahc)
858 {
859 	int ramps;
860 	int single_user;
861 	pcireg_t devconfig;
862 	struct ahc_pci_busdata *bd = ahc->bus_data;
863 
864 	devconfig = pci_conf_read(bd->pc, bd->tag, DEVCONFIG);
865 	single_user = (devconfig & MPORTMODE) != 0;
866 
867 	if ((ahc->features & AHC_ULTRA2) != 0)
868 		ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
869 	else if ((ahc->chip & AHC_CHIPID_MASK) >= AHC_AIC7870)
870 		ramps = (devconfig & RAMPSM) != 0;
871 	else
872 		ramps = 0;
873 
874 	if (ramps && single_user)
875 		return (1);
876 	return (0);
877 }
878 
879 /*
880  * Enable external scbram.
881  */
882 static void
883 ahc_ext_scbram_config(struct ahc_softc *ahc, int enable, int pcheck, int fast)
884 {
885 	pcireg_t devconfig;
886 	struct ahc_pci_busdata *bd = ahc->bus_data;
887 
888 	if (ahc->features & AHC_MULTI_FUNC) {
889 		/*
890 		 * Set the SCB Base addr (highest address bit)
891 		 * depending on which channel we are.
892 		 */
893 		ahc_outb(ahc, SCBBADDR, (u_int8_t)bd->func);
894 	}
895 
896 	devconfig = pci_conf_read(bd->pc, bd->tag, DEVCONFIG);
897 	if ((ahc->features & AHC_ULTRA2) != 0) {
898 		u_int dscommand0;
899 
900 		dscommand0 = ahc_inb(ahc, DSCOMMAND0);
901 		if (enable)
902 			dscommand0 &= ~INTSCBRAMSEL;
903 		else
904 			dscommand0 |= INTSCBRAMSEL;
905 		ahc_outb(ahc, DSCOMMAND0, dscommand0);
906 	} else {
907 		if (fast)
908 			devconfig &= ~EXTSCBTIME;
909 		else
910 			devconfig |= EXTSCBTIME;
911 		if (enable)
912 			devconfig &= ~SCBRAMSEL;
913 		else
914 			devconfig |= SCBRAMSEL;
915 	}
916 	if (pcheck)
917 		devconfig |= EXTSCBPEN;
918 	else
919 		devconfig &= ~EXTSCBPEN;
920 
921 	pci_conf_write(bd->pc, bd->tag, DEVCONFIG, devconfig);
922 }
923 
924 /*
925  * Take a look to see if we have external SRAM.
926  * We currently do not attempt to use SRAM that is
927  * shared among multiple controllers.
928  */
929 static void
930 ahc_probe_ext_scbram(struct ahc_softc *ahc)
931 {
932 	int num_scbs;
933 	int test_num_scbs;
934 	int enable;
935 	int pcheck;
936 	int fast;
937 
938 	if (ahc_ext_scbram_present(ahc) == 0)
939 		return;
940 
941 	/*
942 	 * Probe for the best parameters to use.
943 	 */
944 	enable = FALSE;
945 	pcheck = FALSE;
946 	fast = FALSE;
947 	ahc_ext_scbram_config(ahc, /*enable*/TRUE, pcheck, fast);
948 	num_scbs = ahc_probe_scbs(ahc);
949 	if (num_scbs == 0) {
950 		/* The SRAM wasn't really present. */
951 		goto done;
952 	}
953 	enable = TRUE;
954 
955 	/*
956 	 * Clear any outstanding parity error
957 	 * and ensure that parity error reporting
958 	 * is enabled.
959 	 */
960 	ahc_outb(ahc, SEQCTL, 0);
961 	ahc_outb(ahc, CLRINT, CLRPARERR);
962 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
963 
964 	/* Now see if we can do parity */
965 	ahc_ext_scbram_config(ahc, enable, /*pcheck*/TRUE, fast);
966 	num_scbs = ahc_probe_scbs(ahc);
967 	if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
968 	 || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
969 		pcheck = TRUE;
970 
971 	/* Clear any resulting parity error */
972 	ahc_outb(ahc, CLRINT, CLRPARERR);
973 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
974 
975 	/* Now see if we can do fast timing */
976 	ahc_ext_scbram_config(ahc, enable, pcheck, /*fast*/TRUE);
977 	test_num_scbs = ahc_probe_scbs(ahc);
978 	if (test_num_scbs == num_scbs
979 	 && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
980 	  || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
981 		fast = TRUE;
982 
983 done:
984 	/*
985 	 * Disable parity error reporting until we
986 	 * can load instruction ram.
987 	 */
988 	ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
989 	/* Clear any latched parity error */
990 	ahc_outb(ahc, CLRINT, CLRPARERR);
991 	ahc_outb(ahc, CLRINT, CLRBRKADRINT);
992 	if (bootverbose && enable) {
993 		printf("%s: External SRAM, %s access%s\n",
994 		       ahc_name(ahc), fast ? "fast" : "slow",
995 		       pcheck ? ", parity checking enabled" : "");
996 
997 	}
998 	ahc_ext_scbram_config(ahc, enable, pcheck, fast);
999 }
1000 
1001 #define	DPE	PCI_STATUS_PARITY_DETECT
1002 #define SSE	PCI_STATUS_SPECIAL_ERROR
1003 #define	RMA	PCI_STATUS_MASTER_ABORT
1004 #define	RTA	PCI_STATUS_MASTER_TARGET_ABORT
1005 #define STA	PCI_STATUS_TARGET_TARGET_ABORT
1006 #define DPR	PCI_STATUS_PARITY_ERROR
1007 
1008 int
1009 ahc_pci_intr(struct ahc_softc *ahc)
1010 {
1011 	pcireg_t status1;
1012 	struct ahc_pci_busdata *bd = ahc->bus_data;
1013 
1014 	if ((ahc_inb(ahc, ERROR) & PCIERRSTAT) == 0)
1015 		return 0;
1016 
1017 	status1 = pci_conf_read(bd->pc, bd->tag, PCI_COMMAND_STATUS_REG);
1018 
1019 	if (status1 & DPE) {
1020 		printf("%s: Data Parity Error Detected during address "
1021 		       "or write data phase\n", ahc_name(ahc));
1022 	}
1023 	if (status1 & SSE) {
1024 		printf("%s: Signal System Error Detected\n", ahc_name(ahc));
1025 	}
1026 	if (status1 & RMA) {
1027 		printf("%s: Received a Master Abort\n", ahc_name(ahc));
1028 	}
1029 	if (status1 & RTA) {
1030 		printf("%s: Received a Target Abort\n", ahc_name(ahc));
1031 	}
1032 	if (status1 & STA) {
1033 		printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
1034 	}
1035 	if (status1 & DPR) {
1036 		printf("%s: Data Parity Error has been reported via PERR#\n",
1037 		       ahc_name(ahc));
1038 	}
1039 	if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
1040 		printf("%s: Latched PCIERR interrupt with "
1041 		       "no status bits set\n", ahc_name(ahc));
1042 	}
1043 	pci_conf_write(bd->pc, bd->tag, PCI_COMMAND_STATUS_REG, status1);
1044 
1045 	if (status1 & (DPR|RMA|RTA)) {
1046 		ahc_outb(ahc, CLRINT, CLRPARERR);
1047 	}
1048 
1049 	return 1;
1050 }
1051 
1052 static int
1053 ahc_aic7850_setup(struct pci_attach_args *pa, char *channel,
1054 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1055 {
1056 	*channel = 'A';
1057 	*chip = AHC_AIC7850;
1058 	*features = AHC_AIC7850_FE;
1059 	return (0);
1060 }
1061 
1062 static int
1063 ahc_aic7855_setup(struct pci_attach_args *pa, char *channel,
1064 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1065 {
1066 	*channel = 'A';
1067 	*chip = AHC_AIC7855;
1068 	*features = AHC_AIC7855_FE;
1069 	return (0);
1070 }
1071 
1072 static int
1073 ahc_aic7859_setup(struct pci_attach_args *pa, char *channel,
1074 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1075 {
1076 	*channel = 'A';
1077 	*chip = AHC_AIC7859;
1078 	*features = AHC_AIC7859_FE;
1079 	return (0);
1080 }
1081 
1082 static int
1083 ahc_aic7860_setup(struct pci_attach_args *pa, char *channel,
1084 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1085 {
1086 	*channel = 'A';
1087 	*chip = AHC_AIC7860;
1088 	*features = AHC_AIC7860_FE;
1089 	return (0);
1090 }
1091 
1092 static int
1093 ahc_aic7870_setup(struct pci_attach_args *pa, char *channel,
1094 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1095 {
1096 	*channel = 'A';
1097 	*chip = AHC_AIC7870;
1098 	*features = AHC_AIC7870_FE;
1099 	return (0);
1100 }
1101 
1102 static int
1103 ahc_aha394X_setup(struct pci_attach_args *pa, char *channel,
1104 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1105 {
1106 	int error;
1107 
1108 	error = ahc_aic7870_setup(pa, channel, chip, features, flags);
1109 	if (error == 0)
1110 		error = ahc_aha394XX_setup(pa, channel, chip, features, flags);
1111 	return (error);
1112 }
1113 
1114 static int
1115 ahc_aha398X_setup(struct pci_attach_args *pa, char *channel,
1116 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1117 {
1118 	int error;
1119 
1120 	error = ahc_aic7870_setup(pa, channel, chip, features, flags);
1121 	if (error == 0)
1122 		error = ahc_aha398XX_setup(pa, channel, chip, features, flags);
1123 	return (error);
1124 }
1125 
1126 static int
1127 ahc_aic7880_setup(struct pci_attach_args *pa, char *channel,
1128 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1129 {
1130 	*channel = 'A';
1131 	*chip = AHC_AIC7880;
1132 	*features = AHC_AIC7880_FE;
1133 	return (0);
1134 }
1135 
1136 static int
1137 ahc_2940Pro_setup(struct pci_attach_args *pa, char *channel,
1138 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1139 {
1140 	int error;
1141 
1142 	*flags |= AHC_INT50_SPEEDFLEX;
1143 	error = ahc_aic7880_setup(pa, channel, chip, features, flags);
1144 	return (0);
1145 }
1146 
1147 static int
1148 ahc_aha394XU_setup(struct pci_attach_args *pa, char *channel,
1149 		   ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1150 {
1151 	int error;
1152 
1153 	error = ahc_aic7880_setup(pa, channel, chip, features, flags);
1154 	if (error == 0)
1155 		error = ahc_aha394XX_setup(pa, channel, chip, features, flags);
1156 	return (error);
1157 }
1158 
1159 static int
1160 ahc_aha398XU_setup(struct pci_attach_args *pa, char *channel,
1161 		   ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1162 {
1163 	int error;
1164 
1165 	error = ahc_aic7880_setup(pa, channel, chip, features, flags);
1166 	if (error == 0)
1167 		error = ahc_aha398XX_setup(pa, channel, chip, features, flags);
1168 	return (error);
1169 }
1170 
1171 static int
1172 ahc_aic7890_setup(struct pci_attach_args *pa, char *channel,
1173 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1174 {
1175 	*channel = 'A';
1176 	*chip = AHC_AIC7890;
1177 	*features = AHC_AIC7890_FE;
1178 	*flags |= AHC_NEWEEPROM_FMT;
1179 	return (0);
1180 }
1181 
1182 static int
1183 ahc_aic7892_setup(struct pci_attach_args *pa, char *channel,
1184 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1185 {
1186 	*channel = 'A';
1187 	*chip = AHC_AIC7892;
1188 	*features = AHC_AIC7892_FE;
1189 	*flags |= AHC_NEWEEPROM_FMT;
1190 	return (0);
1191 }
1192 
1193 static int
1194 ahc_aic7895_setup(struct pci_attach_args *pa, char *channel,
1195 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1196 {
1197 	pcireg_t devconfig;
1198 
1199 	*channel = pa->pa_function == 1 ? 'B' : 'A';
1200 	*chip = AHC_AIC7895;
1201 	/* The 'C' revision of the aic7895 has a few additional features */
1202 	if (PCI_REVISION(pa->pa_class) >= 4)
1203 		*features = AHC_AIC7895C_FE;
1204 	else
1205 		*features = AHC_AIC7895_FE;
1206 	*flags |= AHC_NEWEEPROM_FMT;
1207 	devconfig = pci_conf_read(pa->pa_pc, pa->pa_tag, DEVCONFIG);
1208 	devconfig &= ~SCBSIZE32;
1209 	pci_conf_write(pa->pa_pc, pa->pa_tag, DEVCONFIG, devconfig);
1210 	return (0);
1211 }
1212 
1213 static int
1214 ahc_aic7896_setup(struct pci_attach_args *pa, char *channel,
1215 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1216 {
1217 	*channel = pa->pa_function == 1 ? 'B' : 'A';
1218 	*chip = AHC_AIC7896;
1219 	*features = AHC_AIC7896_FE;
1220 	*flags |= AHC_NEWEEPROM_FMT;
1221 	return (0);
1222 }
1223 
1224 static int
1225 ahc_aic7899_setup(struct pci_attach_args *pa, char *channel,
1226 		  ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1227 {
1228 	*channel = pa->pa_function == 1 ? 'B' : 'A';
1229 	*chip = AHC_AIC7899;
1230 	*features = AHC_AIC7899_FE;
1231 	*flags |= AHC_NEWEEPROM_FMT;
1232 	return (0);
1233 }
1234 
1235 static int
1236 ahc_raid_setup(struct pci_attach_args *pa, char *channel,
1237 	       ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1238 {
1239 	printf(": RAID functionality unsupported\n");
1240 	return (ENXIO);
1241 }
1242 
1243 static int
1244 ahc_aha394XX_setup(struct pci_attach_args *pa, char *channel,
1245 		   ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1246 {
1247 	switch (pa->pa_device) {
1248 	case AHC_394X_SLOT_CHANNEL_A:
1249 		*channel = 'A';
1250 		break;
1251 	case AHC_394X_SLOT_CHANNEL_B:
1252 		*channel = 'B';
1253 		break;
1254 	default:
1255 		printf("adapter at unexpected slot %d\n"
1256 		       "unable to map to a channel\n",
1257 		       pa->pa_device);
1258 		*channel = 'A';
1259 	}
1260 	return (0);
1261 }
1262 
1263 static int
1264 ahc_aha398XX_setup(struct pci_attach_args *pa, char *channel,
1265 		   ahc_chip *chip, ahc_feature *features, ahc_flag *flags)
1266 {
1267 	switch (pa->pa_device) {
1268 	case AHC_398X_SLOT_CHANNEL_A:
1269 		*channel = 'A';
1270 		break;
1271 	case AHC_398X_SLOT_CHANNEL_B:
1272 		*channel = 'B';
1273 		break;
1274 	case AHC_398X_SLOT_CHANNEL_C:
1275 		*channel = 'C';
1276 		break;
1277 	default:
1278 		printf("adapter at unexpected slot %d\n"
1279 		       "unable to map to a channel\n",
1280 		       pa->pa_device);
1281 		*channel = 'A';
1282 	}
1283 	*flags |= AHC_LARGE_SEEPROM;
1284 	return (0);
1285 }
1286