[SCSI] aic7xxx: expose the bus setting to sysfs
[linux-2.6.git] / drivers / scsi / aic7xxx / aic7xxx_pci.c
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#79 $
43  */
44
45 #ifdef __linux__
46 #include "aic7xxx_osm.h"
47 #include "aic7xxx_inline.h"
48 #include "aic7xxx_93cx6.h"
49 #else
50 #include <dev/aic7xxx/aic7xxx_osm.h>
51 #include <dev/aic7xxx/aic7xxx_inline.h>
52 #include <dev/aic7xxx/aic7xxx_93cx6.h>
53 #endif
54
55 #include "aic7xxx_pci.h"
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 AHC_PCI_IOADDR  PCIR_MAPS       /* I/O Address */
71 #define AHC_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */
72
73 #define DEVID_9005_TYPE(id) ((id) & 0xF)
74 #define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
75 #define         DEVID_9005_TYPE_AAA             0x3     /* RAID Card */
76 #define         DEVID_9005_TYPE_SISL            0x5     /* Container ROMB */
77 #define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
78
79 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
80 #define         DEVID_9005_MAXRATE_U160         0x0
81 #define         DEVID_9005_MAXRATE_ULTRA2       0x1
82 #define         DEVID_9005_MAXRATE_ULTRA        0x2
83 #define         DEVID_9005_MAXRATE_FAST         0x3
84
85 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
86
87 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
88 #define         DEVID_9005_CLASS_SPI            0x0     /* Parallel SCSI */
89
90 #define SUBID_9005_TYPE(id) ((id) & 0xF)
91 #define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
92 #define         SUBID_9005_TYPE_CARD            0x0     /* Standard Card */
93 #define         SUBID_9005_TYPE_LCCARD          0x1     /* Low Cost Card */
94 #define         SUBID_9005_TYPE_RAID            0x3     /* Combined with Raid */
95
96 #define SUBID_9005_TYPE_KNOWN(id)                       \
97           ((((id) & 0xF) == SUBID_9005_TYPE_MB)         \
98         || (((id) & 0xF) == SUBID_9005_TYPE_CARD)       \
99         || (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)     \
100         || (((id) & 0xF) == SUBID_9005_TYPE_RAID))
101
102 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
103 #define         SUBID_9005_MAXRATE_ULTRA2       0x0
104 #define         SUBID_9005_MAXRATE_ULTRA        0x1
105 #define         SUBID_9005_MAXRATE_U160         0x2
106 #define         SUBID_9005_MAXRATE_RESERVED     0x3
107
108 #define SUBID_9005_SEEPTYPE(id)                                         \
109         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
110          ? ((id) & 0xC0) >> 6                                           \
111          : ((id) & 0x300) >> 8)
112 #define         SUBID_9005_SEEPTYPE_NONE        0x0
113 #define         SUBID_9005_SEEPTYPE_1K          0x1
114 #define         SUBID_9005_SEEPTYPE_2K_4K       0x2
115 #define         SUBID_9005_SEEPTYPE_RESERVED    0x3
116 #define SUBID_9005_AUTOTERM(id)                                         \
117         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
118          ? (((id) & 0x400) >> 10) == 0                                  \
119          : (((id) & 0x40) >> 6) == 0)
120
121 #define SUBID_9005_NUMCHAN(id)                                          \
122         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
123          ? ((id) & 0x300) >> 8                                          \
124          : ((id) & 0xC00) >> 10)
125
126 #define SUBID_9005_LEGACYCONN(id)                                       \
127         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
128          ? 0                                                            \
129          : ((id) & 0x80) >> 7)
130
131 #define SUBID_9005_MFUNCENB(id)                                         \
132         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
133          ? ((id) & 0x800) >> 11                                         \
134          : ((id) & 0x1000) >> 12)
135 /*
136  * Informational only. Should use chip register to be
137  * certain, but may be use in identification strings.
138  */
139 #define SUBID_9005_CARD_SCSIWIDTH_MASK  0x2000
140 #define SUBID_9005_CARD_PCIWIDTH_MASK   0x4000
141 #define SUBID_9005_CARD_SEDIFF_MASK     0x8000
142
143 static ahc_device_setup_t ahc_aic785X_setup;
144 static ahc_device_setup_t ahc_aic7860_setup;
145 static ahc_device_setup_t ahc_apa1480_setup;
146 static ahc_device_setup_t ahc_aic7870_setup;
147 static ahc_device_setup_t ahc_aic7870h_setup;
148 static ahc_device_setup_t ahc_aha394X_setup;
149 static ahc_device_setup_t ahc_aha394Xh_setup;
150 static ahc_device_setup_t ahc_aha494X_setup;
151 static ahc_device_setup_t ahc_aha494Xh_setup;
152 static ahc_device_setup_t ahc_aha398X_setup;
153 static ahc_device_setup_t ahc_aic7880_setup;
154 static ahc_device_setup_t ahc_aic7880h_setup;
155 static ahc_device_setup_t ahc_aha2940Pro_setup;
156 static ahc_device_setup_t ahc_aha394XU_setup;
157 static ahc_device_setup_t ahc_aha394XUh_setup;
158 static ahc_device_setup_t ahc_aha398XU_setup;
159 static ahc_device_setup_t ahc_aic7890_setup;
160 static ahc_device_setup_t ahc_aic7892_setup;
161 static ahc_device_setup_t ahc_aic7895_setup;
162 static ahc_device_setup_t ahc_aic7895h_setup;
163 static ahc_device_setup_t ahc_aic7896_setup;
164 static ahc_device_setup_t ahc_aic7899_setup;
165 static ahc_device_setup_t ahc_aha29160C_setup;
166 static ahc_device_setup_t ahc_raid_setup;
167 static ahc_device_setup_t ahc_aha394XX_setup;
168 static ahc_device_setup_t ahc_aha494XX_setup;
169 static ahc_device_setup_t ahc_aha398XX_setup;
170
171 struct ahc_pci_identity ahc_pci_ident_table [] =
172 {
173         /* aic7850 based controllers */
174         {
175                 ID_AHA_2902_04_10_15_20C_30C,
176                 ID_ALL_MASK,
177                 "Adaptec 2902/04/10/15/20C/30C SCSI adapter",
178                 ahc_aic785X_setup
179         },
180         /* aic7860 based controllers */
181         {
182                 ID_AHA_2930CU,
183                 ID_ALL_MASK,
184                 "Adaptec 2930CU SCSI adapter",
185                 ahc_aic7860_setup
186         },
187         {
188                 ID_AHA_1480A & ID_DEV_VENDOR_MASK,
189                 ID_DEV_VENDOR_MASK,
190                 "Adaptec 1480A Ultra SCSI adapter",
191                 ahc_apa1480_setup
192         },
193         {
194                 ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
195                 ID_DEV_VENDOR_MASK,
196                 "Adaptec 2940A Ultra SCSI adapter",
197                 ahc_aic7860_setup
198         },
199         {
200                 ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
201                 ID_DEV_VENDOR_MASK,
202                 "Adaptec 2940A/CN Ultra SCSI adapter",
203                 ahc_aic7860_setup
204         },
205         {
206                 ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
207                 ID_DEV_VENDOR_MASK,
208                 "Adaptec 2930C Ultra SCSI adapter (VAR)",
209                 ahc_aic7860_setup
210         },
211         /* aic7870 based controllers */
212         {
213                 ID_AHA_2940,
214                 ID_ALL_MASK,
215                 "Adaptec 2940 SCSI adapter",
216                 ahc_aic7870_setup
217         },
218         {
219                 ID_AHA_3940,
220                 ID_ALL_MASK,
221                 "Adaptec 3940 SCSI adapter",
222                 ahc_aha394X_setup
223         },
224         {
225                 ID_AHA_398X,
226                 ID_ALL_MASK,
227                 "Adaptec 398X SCSI RAID adapter",
228                 ahc_aha398X_setup
229         },
230         {
231                 ID_AHA_2944,
232                 ID_ALL_MASK,
233                 "Adaptec 2944 SCSI adapter",
234                 ahc_aic7870h_setup
235         },
236         {
237                 ID_AHA_3944,
238                 ID_ALL_MASK,
239                 "Adaptec 3944 SCSI adapter",
240                 ahc_aha394Xh_setup
241         },
242         {
243                 ID_AHA_4944,
244                 ID_ALL_MASK,
245                 "Adaptec 4944 SCSI adapter",
246                 ahc_aha494Xh_setup
247         },
248         /* aic7880 based controllers */
249         {
250                 ID_AHA_2940U & ID_DEV_VENDOR_MASK,
251                 ID_DEV_VENDOR_MASK,
252                 "Adaptec 2940 Ultra SCSI adapter",
253                 ahc_aic7880_setup
254         },
255         {
256                 ID_AHA_3940U & ID_DEV_VENDOR_MASK,
257                 ID_DEV_VENDOR_MASK,
258                 "Adaptec 3940 Ultra SCSI adapter",
259                 ahc_aha394XU_setup
260         },
261         {
262                 ID_AHA_2944U & ID_DEV_VENDOR_MASK,
263                 ID_DEV_VENDOR_MASK,
264                 "Adaptec 2944 Ultra SCSI adapter",
265                 ahc_aic7880h_setup
266         },
267         {
268                 ID_AHA_3944U & ID_DEV_VENDOR_MASK,
269                 ID_DEV_VENDOR_MASK,
270                 "Adaptec 3944 Ultra SCSI adapter",
271                 ahc_aha394XUh_setup
272         },
273         {
274                 ID_AHA_398XU & ID_DEV_VENDOR_MASK,
275                 ID_DEV_VENDOR_MASK,
276                 "Adaptec 398X Ultra SCSI RAID adapter",
277                 ahc_aha398XU_setup
278         },
279         {
280                 /*
281                  * XXX Don't know the slot numbers
282                  * so we can't identify channels
283                  */
284                 ID_AHA_4944U & ID_DEV_VENDOR_MASK,
285                 ID_DEV_VENDOR_MASK,
286                 "Adaptec 4944 Ultra SCSI adapter",
287                 ahc_aic7880h_setup
288         },
289         {
290                 ID_AHA_2930U & ID_DEV_VENDOR_MASK,
291                 ID_DEV_VENDOR_MASK,
292                 "Adaptec 2930 Ultra SCSI adapter",
293                 ahc_aic7880_setup
294         },
295         {
296                 ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
297                 ID_DEV_VENDOR_MASK,
298                 "Adaptec 2940 Pro Ultra SCSI adapter",
299                 ahc_aha2940Pro_setup
300         },
301         {
302                 ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
303                 ID_DEV_VENDOR_MASK,
304                 "Adaptec 2940/CN Ultra SCSI adapter",
305                 ahc_aic7880_setup
306         },
307         /* Ignore all SISL (AAC on MB) based controllers. */
308         {
309                 ID_9005_SISL_ID,
310                 ID_9005_SISL_MASK,
311                 NULL,
312                 NULL
313         },
314         /* aic7890 based controllers */
315         {
316                 ID_AHA_2930U2,
317                 ID_ALL_MASK,
318                 "Adaptec 2930 Ultra2 SCSI adapter",
319                 ahc_aic7890_setup
320         },
321         {
322                 ID_AHA_2940U2B,
323                 ID_ALL_MASK,
324                 "Adaptec 2940B Ultra2 SCSI adapter",
325                 ahc_aic7890_setup
326         },
327         {
328                 ID_AHA_2940U2_OEM,
329                 ID_ALL_MASK,
330                 "Adaptec 2940 Ultra2 SCSI adapter (OEM)",
331                 ahc_aic7890_setup
332         },
333         {
334                 ID_AHA_2940U2,
335                 ID_ALL_MASK,
336                 "Adaptec 2940 Ultra2 SCSI adapter",
337                 ahc_aic7890_setup
338         },
339         {
340                 ID_AHA_2950U2B,
341                 ID_ALL_MASK,
342                 "Adaptec 2950 Ultra2 SCSI adapter",
343                 ahc_aic7890_setup
344         },
345         {
346                 ID_AIC7890_ARO,
347                 ID_ALL_MASK,
348                 "Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
349                 ahc_aic7890_setup
350         },
351         {
352                 ID_AAA_131U2,
353                 ID_ALL_MASK,
354                 "Adaptec AAA-131 Ultra2 RAID adapter",
355                 ahc_aic7890_setup
356         },
357         /* aic7892 based controllers */
358         {
359                 ID_AHA_29160,
360                 ID_ALL_MASK,
361                 "Adaptec 29160 Ultra160 SCSI adapter",
362                 ahc_aic7892_setup
363         },
364         {
365                 ID_AHA_29160_CPQ,
366                 ID_ALL_MASK,
367                 "Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
368                 ahc_aic7892_setup
369         },
370         {
371                 ID_AHA_29160N,
372                 ID_ALL_MASK,
373                 "Adaptec 29160N Ultra160 SCSI adapter",
374                 ahc_aic7892_setup
375         },
376         {
377                 ID_AHA_29160C,
378                 ID_ALL_MASK,
379                 "Adaptec 29160C Ultra160 SCSI adapter",
380                 ahc_aha29160C_setup
381         },
382         {
383                 ID_AHA_29160B,
384                 ID_ALL_MASK,
385                 "Adaptec 29160B Ultra160 SCSI adapter",
386                 ahc_aic7892_setup
387         },
388         {
389                 ID_AHA_19160B,
390                 ID_ALL_MASK,
391                 "Adaptec 19160B Ultra160 SCSI adapter",
392                 ahc_aic7892_setup
393         },
394         {
395                 ID_AIC7892_ARO,
396                 ID_ALL_MASK,
397                 "Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
398                 ahc_aic7892_setup
399         },
400         {
401                 ID_AHA_2915_30LP,
402                 ID_ALL_MASK,
403                 "Adaptec 2915/30LP Ultra160 SCSI adapter",
404                 ahc_aic7892_setup
405         },
406         /* aic7895 based controllers */ 
407         {
408                 ID_AHA_2940U_DUAL,
409                 ID_ALL_MASK,
410                 "Adaptec 2940/DUAL Ultra SCSI adapter",
411                 ahc_aic7895_setup
412         },
413         {
414                 ID_AHA_3940AU,
415                 ID_ALL_MASK,
416                 "Adaptec 3940A Ultra SCSI adapter",
417                 ahc_aic7895_setup
418         },
419         {
420                 ID_AHA_3944AU,
421                 ID_ALL_MASK,
422                 "Adaptec 3944A Ultra SCSI adapter",
423                 ahc_aic7895h_setup
424         },
425         {
426                 ID_AIC7895_ARO,
427                 ID_AIC7895_ARO_MASK,
428                 "Adaptec aic7895 Ultra SCSI adapter (ARO)",
429                 ahc_aic7895_setup
430         },
431         /* aic7896/97 based controllers */      
432         {
433                 ID_AHA_3950U2B_0,
434                 ID_ALL_MASK,
435                 "Adaptec 3950B Ultra2 SCSI adapter",
436                 ahc_aic7896_setup
437         },
438         {
439                 ID_AHA_3950U2B_1,
440                 ID_ALL_MASK,
441                 "Adaptec 3950B Ultra2 SCSI adapter",
442                 ahc_aic7896_setup
443         },
444         {
445                 ID_AHA_3950U2D_0,
446                 ID_ALL_MASK,
447                 "Adaptec 3950D Ultra2 SCSI adapter",
448                 ahc_aic7896_setup
449         },
450         {
451                 ID_AHA_3950U2D_1,
452                 ID_ALL_MASK,
453                 "Adaptec 3950D Ultra2 SCSI adapter",
454                 ahc_aic7896_setup
455         },
456         {
457                 ID_AIC7896_ARO,
458                 ID_ALL_MASK,
459                 "Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
460                 ahc_aic7896_setup
461         },
462         /* aic7899 based controllers */ 
463         {
464                 ID_AHA_3960D,
465                 ID_ALL_MASK,
466                 "Adaptec 3960D Ultra160 SCSI adapter",
467                 ahc_aic7899_setup
468         },
469         {
470                 ID_AHA_3960D_CPQ,
471                 ID_ALL_MASK,
472                 "Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
473                 ahc_aic7899_setup
474         },
475         {
476                 ID_AIC7899_ARO,
477                 ID_ALL_MASK,
478                 "Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
479                 ahc_aic7899_setup
480         },
481         /* Generic chip probes for devices we don't know 'exactly' */
482         {
483                 ID_AIC7850 & ID_DEV_VENDOR_MASK,
484                 ID_DEV_VENDOR_MASK,
485                 "Adaptec aic7850 SCSI adapter",
486                 ahc_aic785X_setup
487         },
488         {
489                 ID_AIC7855 & ID_DEV_VENDOR_MASK,
490                 ID_DEV_VENDOR_MASK,
491                 "Adaptec aic7855 SCSI adapter",
492                 ahc_aic785X_setup
493         },
494         {
495                 ID_AIC7859 & ID_DEV_VENDOR_MASK,
496                 ID_DEV_VENDOR_MASK,
497                 "Adaptec aic7859 SCSI adapter",
498                 ahc_aic7860_setup
499         },
500         {
501                 ID_AIC7860 & ID_DEV_VENDOR_MASK,
502                 ID_DEV_VENDOR_MASK,
503                 "Adaptec aic7860 Ultra SCSI adapter",
504                 ahc_aic7860_setup
505         },
506         {
507                 ID_AIC7870 & ID_DEV_VENDOR_MASK,
508                 ID_DEV_VENDOR_MASK,
509                 "Adaptec aic7870 SCSI adapter",
510                 ahc_aic7870_setup
511         },
512         {
513                 ID_AIC7880 & ID_DEV_VENDOR_MASK,
514                 ID_DEV_VENDOR_MASK,
515                 "Adaptec aic7880 Ultra SCSI adapter",
516                 ahc_aic7880_setup
517         },
518         {
519                 ID_AIC7890 & ID_9005_GENERIC_MASK,
520                 ID_9005_GENERIC_MASK,
521                 "Adaptec aic7890/91 Ultra2 SCSI adapter",
522                 ahc_aic7890_setup
523         },
524         {
525                 ID_AIC7892 & ID_9005_GENERIC_MASK,
526                 ID_9005_GENERIC_MASK,
527                 "Adaptec aic7892 Ultra160 SCSI adapter",
528                 ahc_aic7892_setup
529         },
530         {
531                 ID_AIC7895 & ID_DEV_VENDOR_MASK,
532                 ID_DEV_VENDOR_MASK,
533                 "Adaptec aic7895 Ultra SCSI adapter",
534                 ahc_aic7895_setup
535         },
536         {
537                 ID_AIC7896 & ID_9005_GENERIC_MASK,
538                 ID_9005_GENERIC_MASK,
539                 "Adaptec aic7896/97 Ultra2 SCSI adapter",
540                 ahc_aic7896_setup
541         },
542         {
543                 ID_AIC7899 & ID_9005_GENERIC_MASK,
544                 ID_9005_GENERIC_MASK,
545                 "Adaptec aic7899 Ultra160 SCSI adapter",
546                 ahc_aic7899_setup
547         },
548         {
549                 ID_AIC7810 & ID_DEV_VENDOR_MASK,
550                 ID_DEV_VENDOR_MASK,
551                 "Adaptec aic7810 RAID memory controller",
552                 ahc_raid_setup
553         },
554         {
555                 ID_AIC7815 & ID_DEV_VENDOR_MASK,
556                 ID_DEV_VENDOR_MASK,
557                 "Adaptec aic7815 RAID memory controller",
558                 ahc_raid_setup
559         }
560 };
561
562 const u_int ahc_num_pci_devs = ARRAY_SIZE(ahc_pci_ident_table);
563                 
564 #define AHC_394X_SLOT_CHANNEL_A 4
565 #define AHC_394X_SLOT_CHANNEL_B 5
566
567 #define AHC_398X_SLOT_CHANNEL_A 4
568 #define AHC_398X_SLOT_CHANNEL_B 8
569 #define AHC_398X_SLOT_CHANNEL_C 12
570
571 #define AHC_494X_SLOT_CHANNEL_A 4
572 #define AHC_494X_SLOT_CHANNEL_B 5
573 #define AHC_494X_SLOT_CHANNEL_C 6
574 #define AHC_494X_SLOT_CHANNEL_D 7
575
576 #define DEVCONFIG               0x40
577 #define         PCIERRGENDIS    0x80000000ul
578 #define         SCBSIZE32       0x00010000ul    /* aic789X only */
579 #define         REXTVALID       0x00001000ul    /* ultra cards only */
580 #define         MPORTMODE       0x00000400ul    /* aic7870+ only */
581 #define         RAMPSM          0x00000200ul    /* aic7870+ only */
582 #define         VOLSENSE        0x00000100ul
583 #define         PCI64BIT        0x00000080ul    /* 64Bit PCI bus (Ultra2 Only)*/
584 #define         SCBRAMSEL       0x00000080ul
585 #define         MRDCEN          0x00000040ul
586 #define         EXTSCBTIME      0x00000020ul    /* aic7870 only */
587 #define         EXTSCBPEN       0x00000010ul    /* aic7870 only */
588 #define         BERREN          0x00000008ul
589 #define         DACEN           0x00000004ul
590 #define         STPWLEVEL       0x00000002ul
591 #define         DIFACTNEGEN     0x00000001ul    /* aic7870 only */
592
593 #define CSIZE_LATTIME           0x0c
594 #define         CACHESIZE       0x0000003ful    /* only 5 bits */
595 #define         LATTIME         0x0000ff00ul
596
597 /* PCI STATUS definitions */
598 #define DPE     0x80
599 #define SSE     0x40
600 #define RMA     0x20
601 #define RTA     0x10
602 #define STA     0x08
603 #define DPR     0x01
604
605 static int ahc_9005_subdevinfo_valid(uint16_t vendor, uint16_t device,
606                                      uint16_t subvendor, uint16_t subdevice);
607 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
608 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
609                                   int pcheck, int fast, int large);
610 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
611 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
612 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
613                                  struct seeprom_config *sc);
614 static void configure_termination(struct ahc_softc *ahc,
615                                   struct seeprom_descriptor *sd,
616                                   u_int adapter_control,
617                                   u_int *sxfrctl1);
618
619 static void ahc_new_term_detect(struct ahc_softc *ahc,
620                                 int *enableSEC_low,
621                                 int *enableSEC_high,
622                                 int *enablePRI_low,
623                                 int *enablePRI_high,
624                                 int *eeprom_present);
625 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
626                                  int *internal68_present,
627                                  int *externalcable_present,
628                                  int *eeprom_present);
629 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
630                                  int *externalcable_present,
631                                  int *eeprom_present);
632 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
633 static uint8_t read_brdctl(struct ahc_softc *ahc);
634 static void ahc_pci_intr(struct ahc_softc *ahc);
635 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
636 static int  ahc_pci_suspend(struct ahc_softc *ahc);
637 static int  ahc_pci_resume(struct ahc_softc *ahc);
638
639 static int
640 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
641                           uint16_t subdevice, uint16_t subvendor)
642 {
643         int result;
644
645         /* Default to invalid. */
646         result = 0;
647         if (vendor == 0x9005
648          && subvendor == 0x9005
649          && subdevice != device
650          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
651
652                 switch (SUBID_9005_TYPE(subdevice)) {
653                 case SUBID_9005_TYPE_MB:
654                         break;
655                 case SUBID_9005_TYPE_CARD:
656                 case SUBID_9005_TYPE_LCCARD:
657                         /*
658                          * Currently only trust Adaptec cards to
659                          * get the sub device info correct.
660                          */
661                         if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
662                                 result = 1;
663                         break;
664                 case SUBID_9005_TYPE_RAID:
665                         break;
666                 default:
667                         break;
668                 }
669         }
670         return (result);
671 }
672
673 struct ahc_pci_identity *
674 ahc_find_pci_device(ahc_dev_softc_t pci)
675 {
676         uint64_t  full_id;
677         uint16_t  device;
678         uint16_t  vendor;
679         uint16_t  subdevice;
680         uint16_t  subvendor;
681         struct    ahc_pci_identity *entry;
682         u_int     i;
683
684         vendor = ahc_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
685         device = ahc_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
686         subvendor = ahc_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
687         subdevice = ahc_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
688         full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
689
690         /*
691          * If the second function is not hooked up, ignore it.
692          * Unfortunately, not all MB vendors implement the
693          * subdevice ID as per the Adaptec spec, so do our best
694          * to sanity check it prior to accepting the subdevice
695          * ID as valid.
696          */
697         if (ahc_get_pci_function(pci) > 0
698          && ahc_9005_subdevinfo_valid(vendor, device, subvendor, subdevice)
699          && SUBID_9005_MFUNCENB(subdevice) == 0)
700                 return (NULL);
701
702         for (i = 0; i < ahc_num_pci_devs; i++) {
703                 entry = &ahc_pci_ident_table[i];
704                 if (entry->full_id == (full_id & entry->id_mask)) {
705                         /* Honor exclusion entries. */
706                         if (entry->name == NULL)
707                                 return (NULL);
708                         return (entry);
709                 }
710         }
711         return (NULL);
712 }
713
714 int
715 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
716 {
717         u_int    command;
718         u_int    our_id;
719         u_int    sxfrctl1;
720         u_int    scsiseq;
721         u_int    dscommand0;
722         uint32_t devconfig;
723         int      error;
724         uint8_t  sblkctl;
725
726         our_id = 0;
727         error = entry->setup(ahc);
728         if (error != 0)
729                 return (error);
730         ahc->chip |= AHC_PCI;
731         ahc->description = entry->name;
732
733         pci_set_power_state(ahc->dev_softc, AHC_POWER_STATE_D0);
734
735         error = ahc_pci_map_registers(ahc);
736         if (error != 0)
737                 return (error);
738
739         /*
740          * Before we continue probing the card, ensure that
741          * its interrupts are *disabled*.  We don't want
742          * a misstep to hang the machine in an interrupt
743          * storm.
744          */
745         ahc_intr_enable(ahc, FALSE);
746
747         devconfig = ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
748
749         /*
750          * If we need to support high memory, enable dual
751          * address cycles.  This bit must be set to enable
752          * high address bit generation even if we are on a
753          * 64bit bus (PCI64BIT set in devconfig).
754          */
755         if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
756
757                 if (bootverbose)
758                         printf("%s: Enabling 39Bit Addressing\n",
759                                ahc_name(ahc));
760                 devconfig |= DACEN;
761         }
762         
763         /* Ensure that pci error generation, a test feature, is disabled. */
764         devconfig |= PCIERRGENDIS;
765
766         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
767
768         /* Ensure busmastering is enabled */
769         command = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
770         command |= PCIM_CMD_BUSMASTEREN;
771
772         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
773
774         /* On all PCI adapters, we allow SCB paging */
775         ahc->flags |= AHC_PAGESCBS;
776
777         error = ahc_softc_init(ahc);
778         if (error != 0)
779                 return (error);
780
781         /*
782          * Disable PCI parity error checking.  Users typically
783          * do this to work around broken PCI chipsets that get
784          * the parity timing wrong and thus generate lots of spurious
785          * errors.  The chip only allows us to disable *all* parity
786          * error reporting when doing this, so CIO bus, scb ram, and
787          * scratch ram parity errors will be ignored too.
788          */
789         if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
790                 ahc->seqctl |= FAILDIS;
791
792         ahc->bus_intr = ahc_pci_intr;
793         ahc->bus_chip_init = ahc_pci_chip_init;
794         ahc->bus_suspend = ahc_pci_suspend;
795         ahc->bus_resume = ahc_pci_resume;
796
797         /* Remeber how the card was setup in case there is no SEEPROM */
798         if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
799                 ahc_pause(ahc);
800                 if ((ahc->features & AHC_ULTRA2) != 0)
801                         our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
802                 else
803                         our_id = ahc_inb(ahc, SCSIID) & OID;
804                 sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
805                 scsiseq = ahc_inb(ahc, SCSISEQ);
806         } else {
807                 sxfrctl1 = STPWEN;
808                 our_id = 7;
809                 scsiseq = 0;
810         }
811
812         error = ahc_reset(ahc, /*reinit*/FALSE);
813         if (error != 0)
814                 return (ENXIO);
815
816         if ((ahc->features & AHC_DT) != 0) {
817                 u_int sfunct;
818
819                 /* Perform ALT-Mode Setup */
820                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
821                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
822                 ahc_outb(ahc, OPTIONMODE,
823                          OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
824                 ahc_outb(ahc, SFUNCT, sfunct);
825
826                 /* Normal mode setup */
827                 ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
828                                           |TARGCRCENDEN);
829         }
830
831         dscommand0 = ahc_inb(ahc, DSCOMMAND0);
832         dscommand0 |= MPARCKEN|CACHETHEN;
833         if ((ahc->features & AHC_ULTRA2) != 0) {
834
835                 /*
836                  * DPARCKEN doesn't work correctly on
837                  * some MBs so don't use it.
838                  */
839                 dscommand0 &= ~DPARCKEN;
840         }
841
842         /*
843          * Handle chips that must have cache line
844          * streaming (dis/en)abled.
845          */
846         if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
847                 dscommand0 |= CACHETHEN;
848
849         if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
850                 dscommand0 &= ~CACHETHEN;
851
852         ahc_outb(ahc, DSCOMMAND0, dscommand0);
853
854         ahc->pci_cachesize =
855             ahc_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
856                                 /*bytes*/1) & CACHESIZE;
857         ahc->pci_cachesize *= 4;
858
859         if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
860          && ahc->pci_cachesize == 4) {
861
862                 ahc_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
863                                      0, /*bytes*/1);
864                 ahc->pci_cachesize = 0;
865         }
866
867         /*
868          * We cannot perform ULTRA speeds without the presense
869          * of the external precision resistor.
870          */
871         if ((ahc->features & AHC_ULTRA) != 0) {
872                 uint32_t devconfig;
873
874                 devconfig = ahc_pci_read_config(ahc->dev_softc,
875                                                 DEVCONFIG, /*bytes*/4);
876                 if ((devconfig & REXTVALID) == 0)
877                         ahc->features &= ~AHC_ULTRA;
878         }
879
880         /* See if we have a SEEPROM and perform auto-term */
881         check_extport(ahc, &sxfrctl1);
882
883         /*
884          * Take the LED out of diagnostic mode
885          */
886         sblkctl = ahc_inb(ahc, SBLKCTL);
887         ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
888
889         if ((ahc->features & AHC_ULTRA2) != 0) {
890                 ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
891         } else {
892                 ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
893         }
894
895         if (ahc->flags & AHC_USEDEFAULTS) {
896                 /*
897                  * PCI Adapter default setup
898                  * Should only be used if the adapter does not have
899                  * a SEEPROM.
900                  */
901                 /* See if someone else set us up already */
902                 if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
903                  && scsiseq != 0) {
904                         printf("%s: Using left over BIOS settings\n",
905                                 ahc_name(ahc));
906                         ahc->flags &= ~AHC_USEDEFAULTS;
907                         ahc->flags |= AHC_BIOS_ENABLED;
908                 } else {
909                         /*
910                          * Assume only one connector and always turn
911                          * on termination.
912                          */
913                         our_id = 0x07;
914                         sxfrctl1 = STPWEN;
915                 }
916                 ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
917
918                 ahc->our_id = our_id;
919         }
920
921         /*
922          * Take a look to see if we have external SRAM.
923          * We currently do not attempt to use SRAM that is
924          * shared among multiple controllers.
925          */
926         ahc_probe_ext_scbram(ahc);
927
928         /*
929          * Record our termination setting for the
930          * generic initialization routine.
931          */
932         if ((sxfrctl1 & STPWEN) != 0)
933                 ahc->flags |= AHC_TERM_ENB_A;
934
935         /*
936          * Save chip register configuration data for chip resets
937          * that occur during runtime and resume events.
938          */
939         ahc->bus_softc.pci_softc.devconfig =
940             ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
941         ahc->bus_softc.pci_softc.command =
942             ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
943         ahc->bus_softc.pci_softc.csize_lattime =
944             ahc_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
945         ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
946         ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
947         if ((ahc->features & AHC_DT) != 0) {
948                 u_int sfunct;
949
950                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
951                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
952                 ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
953                 ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
954                 ahc_outb(ahc, SFUNCT, sfunct);
955                 ahc->bus_softc.pci_softc.crccontrol1 =
956                     ahc_inb(ahc, CRCCONTROL1);
957         }
958         if ((ahc->features & AHC_MULTI_FUNC) != 0)
959                 ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
960
961         if ((ahc->features & AHC_ULTRA2) != 0)
962                 ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
963
964         /* Core initialization */
965         error = ahc_init(ahc);
966         if (error != 0)
967                 return (error);
968
969         /*
970          * Allow interrupts now that we are completely setup.
971          */
972         error = ahc_pci_map_int(ahc);
973         if (error != 0)
974                 return (error);
975
976         ahc->init_level++;
977         return (0);
978 }
979
980 /*
981  * Test for the presense of external sram in an
982  * "unshared" configuration.
983  */
984 static int
985 ahc_ext_scbram_present(struct ahc_softc *ahc)
986 {
987         u_int chip;
988         int ramps;
989         int single_user;
990         uint32_t devconfig;
991
992         chip = ahc->chip & AHC_CHIPID_MASK;
993         devconfig = ahc_pci_read_config(ahc->dev_softc,
994                                         DEVCONFIG, /*bytes*/4);
995         single_user = (devconfig & MPORTMODE) != 0;
996
997         if ((ahc->features & AHC_ULTRA2) != 0)
998                 ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
999         else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1000                 /*
1001                  * External SCBRAM arbitration is flakey
1002                  * on these chips.  Unfortunately this means
1003                  * we don't use the extra SCB ram space on the
1004                  * 3940AUW.
1005                  */
1006                 ramps = 0;
1007         else if (chip >= AHC_AIC7870)
1008                 ramps = (devconfig & RAMPSM) != 0;
1009         else
1010                 ramps = 0;
1011
1012         if (ramps && single_user)
1013                 return (1);
1014         return (0);
1015 }
1016
1017 /*
1018  * Enable external scbram.
1019  */
1020 static void
1021 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1022                   int fast, int large)
1023 {
1024         uint32_t devconfig;
1025
1026         if (ahc->features & AHC_MULTI_FUNC) {
1027                 /*
1028                  * Set the SCB Base addr (highest address bit)
1029                  * depending on which channel we are.
1030                  */
1031                 ahc_outb(ahc, SCBBADDR, ahc_get_pci_function(ahc->dev_softc));
1032         }
1033
1034         ahc->flags &= ~AHC_LSCBS_ENABLED;
1035         if (large)
1036                 ahc->flags |= AHC_LSCBS_ENABLED;
1037         devconfig = ahc_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1038         if ((ahc->features & AHC_ULTRA2) != 0) {
1039                 u_int dscommand0;
1040
1041                 dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1042                 if (enable)
1043                         dscommand0 &= ~INTSCBRAMSEL;
1044                 else
1045                         dscommand0 |= INTSCBRAMSEL;
1046                 if (large)
1047                         dscommand0 &= ~USCBSIZE32;
1048                 else
1049                         dscommand0 |= USCBSIZE32;
1050                 ahc_outb(ahc, DSCOMMAND0, dscommand0);
1051         } else {
1052                 if (fast)
1053                         devconfig &= ~EXTSCBTIME;
1054                 else
1055                         devconfig |= EXTSCBTIME;
1056                 if (enable)
1057                         devconfig &= ~SCBRAMSEL;
1058                 else
1059                         devconfig |= SCBRAMSEL;
1060                 if (large)
1061                         devconfig &= ~SCBSIZE32;
1062                 else
1063                         devconfig |= SCBSIZE32;
1064         }
1065         if (pcheck)
1066                 devconfig |= EXTSCBPEN;
1067         else
1068                 devconfig &= ~EXTSCBPEN;
1069
1070         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1071 }
1072
1073 /*
1074  * Take a look to see if we have external SRAM.
1075  * We currently do not attempt to use SRAM that is
1076  * shared among multiple controllers.
1077  */
1078 static void
1079 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1080 {
1081         int num_scbs;
1082         int test_num_scbs;
1083         int enable;
1084         int pcheck;
1085         int fast;
1086         int large;
1087
1088         enable = FALSE;
1089         pcheck = FALSE;
1090         fast = FALSE;
1091         large = FALSE;
1092         num_scbs = 0;
1093         
1094         if (ahc_ext_scbram_present(ahc) == 0)
1095                 goto done;
1096
1097         /*
1098          * Probe for the best parameters to use.
1099          */
1100         ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1101         num_scbs = ahc_probe_scbs(ahc);
1102         if (num_scbs == 0) {
1103                 /* The SRAM wasn't really present. */
1104                 goto done;
1105         }
1106         enable = TRUE;
1107
1108         /*
1109          * Clear any outstanding parity error
1110          * and ensure that parity error reporting
1111          * is enabled.
1112          */
1113         ahc_outb(ahc, SEQCTL, 0);
1114         ahc_outb(ahc, CLRINT, CLRPARERR);
1115         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1116
1117         /* Now see if we can do parity */
1118         ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1119         num_scbs = ahc_probe_scbs(ahc);
1120         if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1121          || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1122                 pcheck = TRUE;
1123
1124         /* Clear any resulting parity error */
1125         ahc_outb(ahc, CLRINT, CLRPARERR);
1126         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1127
1128         /* Now see if we can do fast timing */
1129         ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1130         test_num_scbs = ahc_probe_scbs(ahc);
1131         if (test_num_scbs == num_scbs
1132          && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1133           || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1134                 fast = TRUE;
1135
1136         /*
1137          * See if we can use large SCBs and still maintain
1138          * the same overall count of SCBs.
1139          */
1140         if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1141                 ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1142                 test_num_scbs = ahc_probe_scbs(ahc);
1143                 if (test_num_scbs >= num_scbs) {
1144                         large = TRUE;
1145                         num_scbs = test_num_scbs;
1146                         if (num_scbs >= 64) {
1147                                 /*
1148                                  * We have enough space to move the
1149                                  * "busy targets table" into SCB space
1150                                  * and make it qualify all the way to the
1151                                  * lun level.
1152                                  */
1153                                 ahc->flags |= AHC_SCB_BTT;
1154                         }
1155                 }
1156         }
1157 done:
1158         /*
1159          * Disable parity error reporting until we
1160          * can load instruction ram.
1161          */
1162         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1163         /* Clear any latched parity error */
1164         ahc_outb(ahc, CLRINT, CLRPARERR);
1165         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1166         if (bootverbose && enable) {
1167                 printf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1168                        ahc_name(ahc), fast ? "fast" : "slow", 
1169                        pcheck ? ", parity checking enabled" : "",
1170                        large ? 64 : 32);
1171         }
1172         ahc_scbram_config(ahc, enable, pcheck, fast, large);
1173 }
1174
1175 /*
1176  * Perform some simple tests that should catch situations where
1177  * our registers are invalidly mapped.
1178  */
1179 int
1180 ahc_pci_test_register_access(struct ahc_softc *ahc)
1181 {
1182         int      error;
1183         u_int    status1;
1184         uint32_t cmd;
1185         uint8_t  hcntrl;
1186
1187         error = EIO;
1188
1189         /*
1190          * Enable PCI error interrupt status, but suppress NMIs
1191          * generated by SERR raised due to target aborts.
1192          */
1193         cmd = ahc_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1194         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1195                              cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1196
1197         /*
1198          * First a simple test to see if any
1199          * registers can be read.  Reading
1200          * HCNTRL has no side effects and has
1201          * at least one bit that is guaranteed to
1202          * be zero so it is a good register to
1203          * use for this test.
1204          */
1205         hcntrl = ahc_inb(ahc, HCNTRL);
1206
1207         if (hcntrl == 0xFF)
1208                 goto fail;
1209
1210         if ((hcntrl & CHIPRST) != 0) {
1211                 /*
1212                  * The chip has not been initialized since
1213                  * PCI/EISA/VLB bus reset.  Don't trust
1214                  * "left over BIOS data".
1215                  */
1216                 ahc->flags |= AHC_NO_BIOS_INIT;
1217         }
1218
1219         /*
1220          * Next create a situation where write combining
1221          * or read prefetching could be initiated by the
1222          * CPU or host bridge.  Our device does not support
1223          * either, so look for data corruption and/or flagged
1224          * PCI errors.  First pause without causing another
1225          * chip reset.
1226          */
1227         hcntrl &= ~CHIPRST;
1228         ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1229         while (ahc_is_paused(ahc) == 0)
1230                 ;
1231
1232         /* Clear any PCI errors that occurred before our driver attached. */
1233         status1 = ahc_pci_read_config(ahc->dev_softc,
1234                                       PCIR_STATUS + 1, /*bytes*/1);
1235         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1236                              status1, /*bytes*/1);
1237         ahc_outb(ahc, CLRINT, CLRPARERR);
1238
1239         ahc_outb(ahc, SEQCTL, PERRORDIS);
1240         ahc_outb(ahc, SCBPTR, 0);
1241         ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1242         if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1243                 goto fail;
1244
1245         status1 = ahc_pci_read_config(ahc->dev_softc,
1246                                       PCIR_STATUS + 1, /*bytes*/1);
1247         if ((status1 & STA) != 0)
1248                 goto fail;
1249
1250         error = 0;
1251
1252 fail:
1253         /* Silently clear any latched errors. */
1254         status1 = ahc_pci_read_config(ahc->dev_softc,
1255                                       PCIR_STATUS + 1, /*bytes*/1);
1256         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1257                              status1, /*bytes*/1);
1258         ahc_outb(ahc, CLRINT, CLRPARERR);
1259         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1260         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1261         return (error);
1262 }
1263
1264 /*
1265  * Check the external port logic for a serial eeprom
1266  * and termination/cable detection contrls.
1267  */
1268 static void
1269 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1270 {
1271         struct  seeprom_descriptor sd;
1272         struct  seeprom_config *sc;
1273         int     have_seeprom;
1274         int     have_autoterm;
1275
1276         sd.sd_ahc = ahc;
1277         sd.sd_control_offset = SEECTL;          
1278         sd.sd_status_offset = SEECTL;           
1279         sd.sd_dataout_offset = SEECTL;          
1280         sc = ahc->seep_config;
1281
1282         /*
1283          * For some multi-channel devices, the c46 is simply too
1284          * small to work.  For the other controller types, we can
1285          * get our information from either SEEPROM type.  Set the
1286          * type to start our probe with accordingly.
1287          */
1288         if (ahc->flags & AHC_LARGE_SEEPROM)
1289                 sd.sd_chip = C56_66;
1290         else
1291                 sd.sd_chip = C46;
1292
1293         sd.sd_MS = SEEMS;
1294         sd.sd_RDY = SEERDY;
1295         sd.sd_CS = SEECS;
1296         sd.sd_CK = SEECK;
1297         sd.sd_DO = SEEDO;
1298         sd.sd_DI = SEEDI;
1299
1300         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1301         if (have_seeprom) {
1302
1303                 if (bootverbose) 
1304                         printf("%s: Reading SEEPROM...", ahc_name(ahc));
1305
1306                 for (;;) {
1307                         u_int start_addr;
1308
1309                         start_addr = 32 * (ahc->channel - 'A');
1310
1311                         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1312                                                         start_addr,
1313                                                         sizeof(*sc)/2);
1314
1315                         if (have_seeprom)
1316                                 have_seeprom = ahc_verify_cksum(sc);
1317
1318                         if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1319                                 if (bootverbose) {
1320                                         if (have_seeprom == 0)
1321                                                 printf ("checksum error\n");
1322                                         else
1323                                                 printf ("done.\n");
1324                                 }
1325                                 break;
1326                         }
1327                         sd.sd_chip = C56_66;
1328                 }
1329                 ahc_release_seeprom(&sd);
1330
1331                 /* Remember the SEEPROM type for later */
1332                 if (sd.sd_chip == C56_66)
1333                         ahc->flags |= AHC_LARGE_SEEPROM;
1334         }
1335
1336         if (!have_seeprom) {
1337                 /*
1338                  * Pull scratch ram settings and treat them as
1339                  * if they are the contents of an seeprom if
1340                  * the 'ADPT' signature is found in SCB2.
1341                  * We manually compose the data as 16bit values
1342                  * to avoid endian issues.
1343                  */
1344                 ahc_outb(ahc, SCBPTR, 2);
1345                 if (ahc_inb(ahc, SCB_BASE) == 'A'
1346                  && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1347                  && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1348                  && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1349                         uint16_t *sc_data;
1350                         int       i;
1351
1352                         sc_data = (uint16_t *)sc;
1353                         for (i = 0; i < 32; i++, sc_data++) {
1354                                 int     j;
1355
1356                                 j = i * 2;
1357                                 *sc_data = ahc_inb(ahc, SRAM_BASE + j)
1358                                          | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1359                         }
1360                         have_seeprom = ahc_verify_cksum(sc);
1361                         if (have_seeprom)
1362                                 ahc->flags |= AHC_SCB_CONFIG_USED;
1363                 }
1364                 /*
1365                  * Clear any SCB parity errors in case this data and
1366                  * its associated parity was not initialized by the BIOS
1367                  */
1368                 ahc_outb(ahc, CLRINT, CLRPARERR);
1369                 ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1370         }
1371
1372         if (!have_seeprom) {
1373                 if (bootverbose)
1374                         printf("%s: No SEEPROM available.\n", ahc_name(ahc));
1375                 ahc->flags |= AHC_USEDEFAULTS;
1376                 free(ahc->seep_config, M_DEVBUF);
1377                 ahc->seep_config = NULL;
1378                 sc = NULL;
1379         } else {
1380                 ahc_parse_pci_eeprom(ahc, sc);
1381         }
1382
1383         /*
1384          * Cards that have the external logic necessary to talk to
1385          * a SEEPROM, are almost certain to have the remaining logic
1386          * necessary for auto-termination control.  This assumption
1387          * hasn't failed yet...
1388          */
1389         have_autoterm = have_seeprom;
1390
1391         /*
1392          * Some low-cost chips have SEEPROM and auto-term control built
1393          * in, instead of using a GAL.  They can tell us directly
1394          * if the termination logic is enabled.
1395          */
1396         if ((ahc->features & AHC_SPIOCAP) != 0) {
1397                 if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1398                         have_autoterm = FALSE;
1399         }
1400
1401         if (have_autoterm) {
1402                 ahc->flags |= AHC_HAS_TERM_LOGIC;
1403                 ahc_acquire_seeprom(ahc, &sd);
1404                 configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1405                 ahc_release_seeprom(&sd);
1406         } else if (have_seeprom) {
1407                 *sxfrctl1 &= ~STPWEN;
1408                 if ((sc->adapter_control & CFSTERM) != 0)
1409                         *sxfrctl1 |= STPWEN;
1410                 if (bootverbose)
1411                         printf("%s: Low byte termination %sabled\n",
1412                                ahc_name(ahc),
1413                                (*sxfrctl1 & STPWEN) ? "en" : "dis");
1414         }
1415 }
1416
1417 static void
1418 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1419 {
1420         /*
1421          * Put the data we've collected down into SRAM
1422          * where ahc_init will find it.
1423          */
1424         int      i;
1425         int      max_targ = sc->max_targets & CFMAXTARG;
1426         u_int    scsi_conf;
1427         uint16_t discenable;
1428         uint16_t ultraenb;
1429
1430         discenable = 0;
1431         ultraenb = 0;
1432         if ((sc->adapter_control & CFULTRAEN) != 0) {
1433                 /*
1434                  * Determine if this adapter has a "newstyle"
1435                  * SEEPROM format.
1436                  */
1437                 for (i = 0; i < max_targ; i++) {
1438                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1439                                 ahc->flags |= AHC_NEWEEPROM_FMT;
1440                                 break;
1441                         }
1442                 }
1443         }
1444
1445         for (i = 0; i < max_targ; i++) {
1446                 u_int     scsirate;
1447                 uint16_t target_mask;
1448
1449                 target_mask = 0x01 << i;
1450                 if (sc->device_flags[i] & CFDISC)
1451                         discenable |= target_mask;
1452                 if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1453                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1454                                 ultraenb |= target_mask;
1455                 } else if ((sc->adapter_control & CFULTRAEN) != 0) {
1456                         ultraenb |= target_mask;
1457                 }
1458                 if ((sc->device_flags[i] & CFXFER) == 0x04
1459                  && (ultraenb & target_mask) != 0) {
1460                         /* Treat 10MHz as a non-ultra speed */
1461                         sc->device_flags[i] &= ~CFXFER;
1462                         ultraenb &= ~target_mask;
1463                 }
1464                 if ((ahc->features & AHC_ULTRA2) != 0) {
1465                         u_int offset;
1466
1467                         if (sc->device_flags[i] & CFSYNCH)
1468                                 offset = MAX_OFFSET_ULTRA2;
1469                         else 
1470                                 offset = 0;
1471                         ahc_outb(ahc, TARG_OFFSET + i, offset);
1472
1473                         /*
1474                          * The ultra enable bits contain the
1475                          * high bit of the ultra2 sync rate
1476                          * field.
1477                          */
1478                         scsirate = (sc->device_flags[i] & CFXFER)
1479                                  | ((ultraenb & target_mask) ? 0x8 : 0x0);
1480                         if (sc->device_flags[i] & CFWIDEB)
1481                                 scsirate |= WIDEXFER;
1482                 } else {
1483                         scsirate = (sc->device_flags[i] & CFXFER) << 4;
1484                         if (sc->device_flags[i] & CFSYNCH)
1485                                 scsirate |= SOFS;
1486                         if (sc->device_flags[i] & CFWIDEB)
1487                                 scsirate |= WIDEXFER;
1488                 }
1489                 ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1490         }
1491         ahc->our_id = sc->brtime_id & CFSCSIID;
1492
1493         scsi_conf = (ahc->our_id & 0x7);
1494         if (sc->adapter_control & CFSPARITY)
1495                 scsi_conf |= ENSPCHK;
1496         if (sc->adapter_control & CFRESETB)
1497                 scsi_conf |= RESET_SCSI;
1498
1499         ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1500
1501         if (sc->bios_control & CFEXTEND)
1502                 ahc->flags |= AHC_EXTENDED_TRANS_A;
1503
1504         if (sc->bios_control & CFBIOSEN)
1505                 ahc->flags |= AHC_BIOS_ENABLED;
1506         if (ahc->features & AHC_ULTRA
1507          && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1508                 /* Should we enable Ultra mode? */
1509                 if (!(sc->adapter_control & CFULTRAEN))
1510                         /* Treat us as a non-ultra card */
1511                         ultraenb = 0;
1512         }
1513
1514         if (sc->signature == CFSIGNATURE
1515          || sc->signature == CFSIGNATURE2) {
1516                 uint32_t devconfig;
1517
1518                 /* Honor the STPWLEVEL settings */
1519                 devconfig = ahc_pci_read_config(ahc->dev_softc,
1520                                                 DEVCONFIG, /*bytes*/4);
1521                 devconfig &= ~STPWLEVEL;
1522                 if ((sc->bios_control & CFSTPWLEVEL) != 0)
1523                         devconfig |= STPWLEVEL;
1524                 ahc_pci_write_config(ahc->dev_softc, DEVCONFIG,
1525                                      devconfig, /*bytes*/4);
1526         }
1527         /* Set SCSICONF info */
1528         ahc_outb(ahc, SCSICONF, scsi_conf);
1529         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1530         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1531         ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1532         ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1533 }
1534
1535 static void
1536 configure_termination(struct ahc_softc *ahc,
1537                       struct seeprom_descriptor *sd,
1538                       u_int adapter_control,
1539                       u_int *sxfrctl1)
1540 {
1541         uint8_t brddat;
1542         
1543         brddat = 0;
1544
1545         /*
1546          * Update the settings in sxfrctl1 to match the
1547          * termination settings 
1548          */
1549         *sxfrctl1 = 0;
1550         
1551         /*
1552          * SEECS must be on for the GALS to latch
1553          * the data properly.  Be sure to leave MS
1554          * on or we will release the seeprom.
1555          */
1556         SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1557         if ((adapter_control & CFAUTOTERM) != 0
1558          || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1559                 int internal50_present;
1560                 int internal68_present;
1561                 int externalcable_present;
1562                 int eeprom_present;
1563                 int enableSEC_low;
1564                 int enableSEC_high;
1565                 int enablePRI_low;
1566                 int enablePRI_high;
1567                 int sum;
1568
1569                 enableSEC_low = 0;
1570                 enableSEC_high = 0;
1571                 enablePRI_low = 0;
1572                 enablePRI_high = 0;
1573                 if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1574                         ahc_new_term_detect(ahc, &enableSEC_low,
1575                                             &enableSEC_high,
1576                                             &enablePRI_low,
1577                                             &enablePRI_high,
1578                                             &eeprom_present);
1579                         if ((adapter_control & CFSEAUTOTERM) == 0) {
1580                                 if (bootverbose)
1581                                         printf("%s: Manual SE Termination\n",
1582                                                ahc_name(ahc));
1583                                 enableSEC_low = (adapter_control & CFSELOWTERM);
1584                                 enableSEC_high =
1585                                     (adapter_control & CFSEHIGHTERM);
1586                         }
1587                         if ((adapter_control & CFAUTOTERM) == 0) {
1588                                 if (bootverbose)
1589                                         printf("%s: Manual LVD Termination\n",
1590                                                ahc_name(ahc));
1591                                 enablePRI_low = (adapter_control & CFSTERM);
1592                                 enablePRI_high = (adapter_control & CFWSTERM);
1593                         }
1594                         /* Make the table calculations below happy */
1595                         internal50_present = 0;
1596                         internal68_present = 1;
1597                         externalcable_present = 1;
1598                 } else if ((ahc->features & AHC_SPIOCAP) != 0) {
1599                         aic785X_cable_detect(ahc, &internal50_present,
1600                                              &externalcable_present,
1601                                              &eeprom_present);
1602                         /* Can never support a wide connector. */
1603                         internal68_present = 0;
1604                 } else {
1605                         aic787X_cable_detect(ahc, &internal50_present,
1606                                              &internal68_present,
1607                                              &externalcable_present,
1608                                              &eeprom_present);
1609                 }
1610
1611                 if ((ahc->features & AHC_WIDE) == 0)
1612                         internal68_present = 0;
1613
1614                 if (bootverbose
1615                  && (ahc->features & AHC_ULTRA2) == 0) {
1616                         printf("%s: internal 50 cable %s present",
1617                                ahc_name(ahc),
1618                                internal50_present ? "is":"not");
1619
1620                         if ((ahc->features & AHC_WIDE) != 0)
1621                                 printf(", internal 68 cable %s present",
1622                                        internal68_present ? "is":"not");
1623                         printf("\n%s: external cable %s present\n",
1624                                ahc_name(ahc),
1625                                externalcable_present ? "is":"not");
1626                 }
1627                 if (bootverbose)
1628                         printf("%s: BIOS eeprom %s present\n",
1629                                ahc_name(ahc), eeprom_present ? "is" : "not");
1630
1631                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1632                         /*
1633                          * The 50 pin connector is a separate bus,
1634                          * so force it to always be terminated.
1635                          * In the future, perform current sensing
1636                          * to determine if we are in the middle of
1637                          * a properly terminated bus.
1638                          */
1639                         internal50_present = 0;
1640                 }
1641
1642                 /*
1643                  * Now set the termination based on what
1644                  * we found.
1645                  * Flash Enable = BRDDAT7
1646                  * Secondary High Term Enable = BRDDAT6
1647                  * Secondary Low Term Enable = BRDDAT5 (7890)
1648                  * Primary High Term Enable = BRDDAT4 (7890)
1649                  */
1650                 if ((ahc->features & AHC_ULTRA2) == 0
1651                  && (internal50_present != 0)
1652                  && (internal68_present != 0)
1653                  && (externalcable_present != 0)) {
1654                         printf("%s: Illegal cable configuration!!. "
1655                                "Only two connectors on the "
1656                                "adapter may be used at a "
1657                                "time!\n", ahc_name(ahc));
1658
1659                         /*
1660                          * Pretend there are no cables in the hope
1661                          * that having all of the termination on
1662                          * gives us a more stable bus.
1663                          */
1664                         internal50_present = 0;
1665                         internal68_present = 0;
1666                         externalcable_present = 0;
1667                 }
1668
1669                 if ((ahc->features & AHC_WIDE) != 0
1670                  && ((externalcable_present == 0)
1671                   || (internal68_present == 0)
1672                   || (enableSEC_high != 0))) {
1673                         brddat |= BRDDAT6;
1674                         if (bootverbose) {
1675                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1676                                         printf("%s: 68 pin termination "
1677                                                "Enabled\n", ahc_name(ahc));
1678                                 else
1679                                         printf("%s: %sHigh byte termination "
1680                                                "Enabled\n", ahc_name(ahc),
1681                                                enableSEC_high ? "Secondary "
1682                                                               : "");
1683                         }
1684                 }
1685
1686                 sum = internal50_present + internal68_present
1687                     + externalcable_present;
1688                 if (sum < 2 || (enableSEC_low != 0)) {
1689                         if ((ahc->features & AHC_ULTRA2) != 0)
1690                                 brddat |= BRDDAT5;
1691                         else
1692                                 *sxfrctl1 |= STPWEN;
1693                         if (bootverbose) {
1694                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1695                                         printf("%s: 50 pin termination "
1696                                                "Enabled\n", ahc_name(ahc));
1697                                 else
1698                                         printf("%s: %sLow byte termination "
1699                                                "Enabled\n", ahc_name(ahc),
1700                                                enableSEC_low ? "Secondary "
1701                                                              : "");
1702                         }
1703                 }
1704
1705                 if (enablePRI_low != 0) {
1706                         *sxfrctl1 |= STPWEN;
1707                         if (bootverbose)
1708                                 printf("%s: Primary Low Byte termination "
1709                                        "Enabled\n", ahc_name(ahc));
1710                 }
1711
1712                 /*
1713                  * Setup STPWEN before setting up the rest of
1714                  * the termination per the tech note on the U160 cards.
1715                  */
1716                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1717
1718                 if (enablePRI_high != 0) {
1719                         brddat |= BRDDAT4;
1720                         if (bootverbose)
1721                                 printf("%s: Primary High Byte "
1722                                        "termination Enabled\n",
1723                                        ahc_name(ahc));
1724                 }
1725                 
1726                 write_brdctl(ahc, brddat);
1727
1728         } else {
1729                 if ((adapter_control & CFSTERM) != 0) {
1730                         *sxfrctl1 |= STPWEN;
1731
1732                         if (bootverbose)
1733                                 printf("%s: %sLow byte termination Enabled\n",
1734                                        ahc_name(ahc),
1735                                        (ahc->features & AHC_ULTRA2) ? "Primary "
1736                                                                     : "");
1737                 }
1738
1739                 if ((adapter_control & CFWSTERM) != 0
1740                  && (ahc->features & AHC_WIDE) != 0) {
1741                         brddat |= BRDDAT6;
1742                         if (bootverbose)
1743                                 printf("%s: %sHigh byte termination Enabled\n",
1744                                        ahc_name(ahc),
1745                                        (ahc->features & AHC_ULTRA2)
1746                                      ? "Secondary " : "");
1747                 }
1748
1749                 /*
1750                  * Setup STPWEN before setting up the rest of
1751                  * the termination per the tech note on the U160 cards.
1752                  */
1753                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1754
1755                 if ((ahc->features & AHC_WIDE) != 0)
1756                         write_brdctl(ahc, brddat);
1757         }
1758         SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1759 }
1760
1761 static void
1762 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1763                     int *enableSEC_high, int *enablePRI_low,
1764                     int *enablePRI_high, int *eeprom_present)
1765 {
1766         uint8_t brdctl;
1767
1768         /*
1769          * BRDDAT7 = Eeprom
1770          * BRDDAT6 = Enable Secondary High Byte termination
1771          * BRDDAT5 = Enable Secondary Low Byte termination
1772          * BRDDAT4 = Enable Primary high byte termination
1773          * BRDDAT3 = Enable Primary low byte termination
1774          */
1775         brdctl = read_brdctl(ahc);
1776         *eeprom_present = brdctl & BRDDAT7;
1777         *enableSEC_high = (brdctl & BRDDAT6);
1778         *enableSEC_low = (brdctl & BRDDAT5);
1779         *enablePRI_high = (brdctl & BRDDAT4);
1780         *enablePRI_low = (brdctl & BRDDAT3);
1781 }
1782
1783 static void
1784 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1785                      int *internal68_present, int *externalcable_present,
1786                      int *eeprom_present)
1787 {
1788         uint8_t brdctl;
1789
1790         /*
1791          * First read the status of our cables.
1792          * Set the rom bank to 0 since the
1793          * bank setting serves as a multiplexor
1794          * for the cable detection logic.
1795          * BRDDAT5 controls the bank switch.
1796          */
1797         write_brdctl(ahc, 0);
1798
1799         /*
1800          * Now read the state of the internal
1801          * connectors.  BRDDAT6 is INT50 and
1802          * BRDDAT7 is INT68.
1803          */
1804         brdctl = read_brdctl(ahc);
1805         *internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1806         *internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1807
1808         /*
1809          * Set the rom bank to 1 and determine
1810          * the other signals.
1811          */
1812         write_brdctl(ahc, BRDDAT5);
1813
1814         /*
1815          * Now read the state of the external
1816          * connectors.  BRDDAT6 is EXT68 and
1817          * BRDDAT7 is EPROMPS.
1818          */
1819         brdctl = read_brdctl(ahc);
1820         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1821         *eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1822 }
1823
1824 static void
1825 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1826                      int *externalcable_present, int *eeprom_present)
1827 {
1828         uint8_t brdctl;
1829         uint8_t spiocap;
1830
1831         spiocap = ahc_inb(ahc, SPIOCAP);
1832         spiocap &= ~SOFTCMDEN;
1833         spiocap |= EXT_BRDCTL;
1834         ahc_outb(ahc, SPIOCAP, spiocap);
1835         ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1836         ahc_flush_device_writes(ahc);
1837         ahc_delay(500);
1838         ahc_outb(ahc, BRDCTL, 0);
1839         ahc_flush_device_writes(ahc);
1840         ahc_delay(500);
1841         brdctl = ahc_inb(ahc, BRDCTL);
1842         *internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1843         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1844         *eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1845 }
1846         
1847 int
1848 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1849 {
1850         int wait;
1851
1852         if ((ahc->features & AHC_SPIOCAP) != 0
1853          && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1854                 return (0);
1855
1856         /*
1857          * Request access of the memory port.  When access is
1858          * granted, SEERDY will go high.  We use a 1 second
1859          * timeout which should be near 1 second more than
1860          * is needed.  Reason: after the chip reset, there
1861          * should be no contention.
1862          */
1863         SEEPROM_OUTB(sd, sd->sd_MS);
1864         wait = 1000;  /* 1 second timeout in msec */
1865         while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1866                 ahc_delay(1000);  /* delay 1 msec */
1867         }
1868         if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1869                 SEEPROM_OUTB(sd, 0); 
1870                 return (0);
1871         }
1872         return(1);
1873 }
1874
1875 void
1876 ahc_release_seeprom(struct seeprom_descriptor *sd)
1877 {
1878         /* Release access to the memory port and the serial EEPROM. */
1879         SEEPROM_OUTB(sd, 0);
1880 }
1881
1882 static void
1883 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1884 {
1885         uint8_t brdctl;
1886
1887         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1888                 brdctl = BRDSTB;
1889                 if (ahc->channel == 'B')
1890                         brdctl |= BRDCS;
1891         } else if ((ahc->features & AHC_ULTRA2) != 0) {
1892                 brdctl = 0;
1893         } else {
1894                 brdctl = BRDSTB|BRDCS;
1895         }
1896         ahc_outb(ahc, BRDCTL, brdctl);
1897         ahc_flush_device_writes(ahc);
1898         brdctl |= value;
1899         ahc_outb(ahc, BRDCTL, brdctl);
1900         ahc_flush_device_writes(ahc);
1901         if ((ahc->features & AHC_ULTRA2) != 0)
1902                 brdctl |= BRDSTB_ULTRA2;
1903         else
1904                 brdctl &= ~BRDSTB;
1905         ahc_outb(ahc, BRDCTL, brdctl);
1906         ahc_flush_device_writes(ahc);
1907         if ((ahc->features & AHC_ULTRA2) != 0)
1908                 brdctl = 0;
1909         else
1910                 brdctl &= ~BRDCS;
1911         ahc_outb(ahc, BRDCTL, brdctl);
1912 }
1913
1914 static uint8_t
1915 read_brdctl(struct ahc_softc *ahc)
1916 {
1917         uint8_t brdctl;
1918         uint8_t value;
1919
1920         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1921                 brdctl = BRDRW;
1922                 if (ahc->channel == 'B')
1923                         brdctl |= BRDCS;
1924         } else if ((ahc->features & AHC_ULTRA2) != 0) {
1925                 brdctl = BRDRW_ULTRA2;
1926         } else {
1927                 brdctl = BRDRW|BRDCS;
1928         }
1929         ahc_outb(ahc, BRDCTL, brdctl);
1930         ahc_flush_device_writes(ahc);
1931         value = ahc_inb(ahc, BRDCTL);
1932         ahc_outb(ahc, BRDCTL, 0);
1933         return (value);
1934 }
1935
1936 static void
1937 ahc_pci_intr(struct ahc_softc *ahc)
1938 {
1939         u_int error;
1940         u_int status1;
1941
1942         error = ahc_inb(ahc, ERROR);
1943         if ((error & PCIERRSTAT) == 0)
1944                 return;
1945
1946         status1 = ahc_pci_read_config(ahc->dev_softc,
1947                                       PCIR_STATUS + 1, /*bytes*/1);
1948
1949         printf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
1950               ahc_name(ahc),
1951               ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
1952
1953         if (status1 & DPE) {
1954                 ahc->pci_target_perr_count++;
1955                 printf("%s: Data Parity Error Detected during address "
1956                        "or write data phase\n", ahc_name(ahc));
1957         }
1958         if (status1 & SSE) {
1959                 printf("%s: Signal System Error Detected\n", ahc_name(ahc));
1960         }
1961         if (status1 & RMA) {
1962                 printf("%s: Received a Master Abort\n", ahc_name(ahc));
1963         }
1964         if (status1 & RTA) {
1965                 printf("%s: Received a Target Abort\n", ahc_name(ahc));
1966         }
1967         if (status1 & STA) {
1968                 printf("%s: Signaled a Target Abort\n", ahc_name(ahc));
1969         }
1970         if (status1 & DPR) {
1971                 printf("%s: Data Parity Error has been reported via PERR#\n",
1972                        ahc_name(ahc));
1973         }
1974
1975         /* Clear latched errors. */
1976         ahc_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1977                              status1, /*bytes*/1);
1978
1979         if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
1980                 printf("%s: Latched PCIERR interrupt with "
1981                        "no status bits set\n", ahc_name(ahc)); 
1982         } else {
1983                 ahc_outb(ahc, CLRINT, CLRPARERR);
1984         }
1985
1986         if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH) {
1987                 printf(
1988 "%s: WARNING WARNING WARNING WARNING\n"
1989 "%s: Too many PCI parity errors observed as a target.\n"
1990 "%s: Some device on this bus is generating bad parity.\n"
1991 "%s: This is an error *observed by*, not *generated by*, this controller.\n"
1992 "%s: PCI parity error checking has been disabled.\n"
1993 "%s: WARNING WARNING WARNING WARNING\n",
1994                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
1995                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc));
1996                 ahc->seqctl |= FAILDIS;
1997                 ahc_outb(ahc, SEQCTL, ahc->seqctl);
1998         }
1999         ahc_unpause(ahc);
2000 }
2001
2002 static int
2003 ahc_pci_chip_init(struct ahc_softc *ahc)
2004 {
2005         ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2006         ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2007         if ((ahc->features & AHC_DT) != 0) {
2008                 u_int sfunct;
2009
2010                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2011                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2012                 ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2013                 ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2014                 ahc_outb(ahc, SFUNCT, sfunct);
2015                 ahc_outb(ahc, CRCCONTROL1,
2016                          ahc->bus_softc.pci_softc.crccontrol1);
2017         }
2018         if ((ahc->features & AHC_MULTI_FUNC) != 0)
2019                 ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2020
2021         if ((ahc->features & AHC_ULTRA2) != 0)
2022                 ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2023
2024         return (ahc_chip_init(ahc));
2025 }
2026
2027 static int
2028 ahc_pci_suspend(struct ahc_softc *ahc)
2029 {
2030         return (ahc_suspend(ahc));
2031 }
2032
2033 static int
2034 ahc_pci_resume(struct ahc_softc *ahc)
2035 {
2036
2037         pci_set_power_state(ahc->dev_softc, AHC_POWER_STATE_D0);
2038
2039         /*
2040          * We assume that the OS has restored our register
2041          * mappings, etc.  Just update the config space registers
2042          * that the OS doesn't know about and rely on our chip
2043          * reset handler to handle the rest.
2044          */
2045         ahc_pci_write_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4,
2046                              ahc->bus_softc.pci_softc.devconfig);
2047         ahc_pci_write_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1,
2048                              ahc->bus_softc.pci_softc.command);
2049         ahc_pci_write_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1,
2050                              ahc->bus_softc.pci_softc.csize_lattime);
2051         if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2052                 struct  seeprom_descriptor sd;
2053                 u_int   sxfrctl1;
2054
2055                 sd.sd_ahc = ahc;
2056                 sd.sd_control_offset = SEECTL;          
2057                 sd.sd_status_offset = SEECTL;           
2058                 sd.sd_dataout_offset = SEECTL;          
2059
2060                 ahc_acquire_seeprom(ahc, &sd);
2061                 configure_termination(ahc, &sd,
2062                                       ahc->seep_config->adapter_control,
2063                                       &sxfrctl1);
2064                 ahc_release_seeprom(&sd);
2065         }
2066         return (ahc_resume(ahc));
2067 }
2068
2069 static int
2070 ahc_aic785X_setup(struct ahc_softc *ahc)
2071 {
2072         ahc_dev_softc_t pci;
2073         uint8_t rev;
2074
2075         pci = ahc->dev_softc;
2076         ahc->channel = 'A';
2077         ahc->chip = AHC_AIC7850;
2078         ahc->features = AHC_AIC7850_FE;
2079         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2080         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2081         if (rev >= 1)
2082                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2083         ahc->instruction_ram_size = 512;
2084         return (0);
2085 }
2086
2087 static int
2088 ahc_aic7860_setup(struct ahc_softc *ahc)
2089 {
2090         ahc_dev_softc_t pci;
2091         uint8_t rev;
2092
2093         pci = ahc->dev_softc;
2094         ahc->channel = 'A';
2095         ahc->chip = AHC_AIC7860;
2096         ahc->features = AHC_AIC7860_FE;
2097         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2098         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2099         if (rev >= 1)
2100                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2101         ahc->instruction_ram_size = 512;
2102         return (0);
2103 }
2104
2105 static int
2106 ahc_apa1480_setup(struct ahc_softc *ahc)
2107 {
2108         int error;
2109
2110         error = ahc_aic7860_setup(ahc);
2111         if (error != 0)
2112                 return (error);
2113         ahc->features |= AHC_REMOVABLE;
2114         return (0);
2115 }
2116
2117 static int
2118 ahc_aic7870_setup(struct ahc_softc *ahc)
2119 {
2120
2121         ahc->channel = 'A';
2122         ahc->chip = AHC_AIC7870;
2123         ahc->features = AHC_AIC7870_FE;
2124         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2125         ahc->instruction_ram_size = 512;
2126         return (0);
2127 }
2128
2129 static int
2130 ahc_aic7870h_setup(struct ahc_softc *ahc)
2131 {
2132         int error = ahc_aic7870_setup(ahc);
2133
2134         ahc->features |= AHC_HVD;
2135
2136         return error;
2137 }
2138
2139 static int
2140 ahc_aha394X_setup(struct ahc_softc *ahc)
2141 {
2142         int error;
2143
2144         error = ahc_aic7870_setup(ahc);
2145         if (error == 0)
2146                 error = ahc_aha394XX_setup(ahc);
2147         return (error);
2148 }
2149
2150 static int
2151 ahc_aha394Xh_setup(struct ahc_softc *ahc)
2152 {
2153         int error = ahc_aha394X_setup(ahc);
2154
2155         ahc->features |= AHC_HVD;
2156
2157         return error;
2158 }
2159
2160 static int
2161 ahc_aha398X_setup(struct ahc_softc *ahc)
2162 {
2163         int error;
2164
2165         error = ahc_aic7870_setup(ahc);
2166         if (error == 0)
2167                 error = ahc_aha398XX_setup(ahc);
2168         return (error);
2169 }
2170
2171 static int
2172 ahc_aha494X_setup(struct ahc_softc *ahc)
2173 {
2174         int error;
2175
2176         error = ahc_aic7870_setup(ahc);
2177         if (error == 0)
2178                 error = ahc_aha494XX_setup(ahc);
2179         return (error);
2180 }
2181
2182 static int
2183 ahc_aha494Xh_setup(struct ahc_softc *ahc)
2184 {
2185         int error = ahc_aha494X_setup(ahc);
2186
2187         ahc->features |= AHC_HVD;
2188
2189         return error;
2190 }
2191
2192 static int
2193 ahc_aic7880_setup(struct ahc_softc *ahc)
2194 {
2195         ahc_dev_softc_t pci;
2196         uint8_t rev;
2197
2198         pci = ahc->dev_softc;
2199         ahc->channel = 'A';
2200         ahc->chip = AHC_AIC7880;
2201         ahc->features = AHC_AIC7880_FE;
2202         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2203         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2204         if (rev >= 1) {
2205                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2206         } else {
2207                 ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2208         }
2209         ahc->instruction_ram_size = 512;
2210         return (0);
2211 }
2212
2213 static int
2214 ahc_aic7880h_setup(struct ahc_softc *ahc)
2215 {
2216         int error = ahc_aic7880_setup(ahc);
2217
2218         ahc->features |= AHC_HVD;
2219
2220         return error;
2221 }
2222
2223
2224 static int
2225 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2226 {
2227
2228         ahc->flags |= AHC_INT50_SPEEDFLEX;
2229         return (ahc_aic7880_setup(ahc));
2230 }
2231
2232 static int
2233 ahc_aha394XU_setup(struct ahc_softc *ahc)
2234 {
2235         int error;
2236
2237         error = ahc_aic7880_setup(ahc);
2238         if (error == 0)
2239                 error = ahc_aha394XX_setup(ahc);
2240         return (error);
2241 }
2242
2243 static int
2244 ahc_aha394XUh_setup(struct ahc_softc *ahc)
2245 {
2246         int error = ahc_aha394XU_setup(ahc);
2247
2248         ahc->features |= AHC_HVD;
2249
2250         return error;
2251 }
2252
2253 static int
2254 ahc_aha398XU_setup(struct ahc_softc *ahc)
2255 {
2256         int error;
2257
2258         error = ahc_aic7880_setup(ahc);
2259         if (error == 0)
2260                 error = ahc_aha398XX_setup(ahc);
2261         return (error);
2262 }
2263
2264 static int
2265 ahc_aic7890_setup(struct ahc_softc *ahc)
2266 {
2267         ahc_dev_softc_t pci;
2268         uint8_t rev;
2269
2270         pci = ahc->dev_softc;
2271         ahc->channel = 'A';
2272         ahc->chip = AHC_AIC7890;
2273         ahc->features = AHC_AIC7890_FE;
2274         ahc->flags |= AHC_NEWEEPROM_FMT;
2275         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2276         if (rev == 0)
2277                 ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2278         ahc->instruction_ram_size = 768;
2279         return (0);
2280 }
2281
2282 static int
2283 ahc_aic7892_setup(struct ahc_softc *ahc)
2284 {
2285
2286         ahc->channel = 'A';
2287         ahc->chip = AHC_AIC7892;
2288         ahc->features = AHC_AIC7892_FE;
2289         ahc->flags |= AHC_NEWEEPROM_FMT;
2290         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2291         ahc->instruction_ram_size = 1024;
2292         return (0);
2293 }
2294
2295 static int
2296 ahc_aic7895_setup(struct ahc_softc *ahc)
2297 {
2298         ahc_dev_softc_t pci;
2299         uint8_t rev;
2300
2301         pci = ahc->dev_softc;
2302         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2303         /*
2304          * The 'C' revision of the aic7895 has a few additional features.
2305          */
2306         rev = ahc_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2307         if (rev >= 4) {
2308                 ahc->chip = AHC_AIC7895C;
2309                 ahc->features = AHC_AIC7895C_FE;
2310         } else  {
2311                 u_int command;
2312
2313                 ahc->chip = AHC_AIC7895;
2314                 ahc->features = AHC_AIC7895_FE;
2315
2316                 /*
2317                  * The BIOS disables the use of MWI transactions
2318                  * since it does not have the MWI bug work around
2319                  * we have.  Disabling MWI reduces performance, so
2320                  * turn it on again.
2321                  */
2322                 command = ahc_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2323                 command |= PCIM_CMD_MWRICEN;
2324                 ahc_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2325                 ahc->bugs |= AHC_PCI_MWI_BUG;
2326         }
2327         /*
2328          * XXX Does CACHETHEN really not work???  What about PCI retry?
2329          * on C level chips.  Need to test, but for now, play it safe.
2330          */
2331         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2332                   |  AHC_CACHETHEN_BUG;
2333
2334 #if 0
2335         uint32_t devconfig;
2336
2337         /*
2338          * Cachesize must also be zero due to stray DAC
2339          * problem when sitting behind some bridges.
2340          */
2341         ahc_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2342         devconfig = ahc_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2343         devconfig |= MRDCEN;
2344         ahc_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2345 #endif
2346         ahc->flags |= AHC_NEWEEPROM_FMT;
2347         ahc->instruction_ram_size = 512;
2348         return (0);
2349 }
2350
2351 static int
2352 ahc_aic7895h_setup(struct ahc_softc *ahc)
2353 {
2354         int error = ahc_aic7895_setup(ahc);
2355
2356         ahc->features |= AHC_HVD;
2357
2358         return error;
2359 }
2360
2361 static int
2362 ahc_aic7896_setup(struct ahc_softc *ahc)
2363 {
2364         ahc_dev_softc_t pci;
2365
2366         pci = ahc->dev_softc;
2367         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2368         ahc->chip = AHC_AIC7896;
2369         ahc->features = AHC_AIC7896_FE;
2370         ahc->flags |= AHC_NEWEEPROM_FMT;
2371         ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2372         ahc->instruction_ram_size = 768;
2373         return (0);
2374 }
2375
2376 static int
2377 ahc_aic7899_setup(struct ahc_softc *ahc)
2378 {
2379         ahc_dev_softc_t pci;
2380
2381         pci = ahc->dev_softc;
2382         ahc->channel = ahc_get_pci_function(pci) == 1 ? 'B' : 'A';
2383         ahc->chip = AHC_AIC7899;
2384         ahc->features = AHC_AIC7899_FE;
2385         ahc->flags |= AHC_NEWEEPROM_FMT;
2386         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2387         ahc->instruction_ram_size = 1024;
2388         return (0);
2389 }
2390
2391 static int
2392 ahc_aha29160C_setup(struct ahc_softc *ahc)
2393 {
2394         int error;
2395
2396         error = ahc_aic7899_setup(ahc);
2397         if (error != 0)
2398                 return (error);
2399         ahc->features |= AHC_REMOVABLE;
2400         return (0);
2401 }
2402
2403 static int
2404 ahc_raid_setup(struct ahc_softc *ahc)
2405 {
2406         printf("RAID functionality unsupported\n");
2407         return (ENXIO);
2408 }
2409
2410 static int
2411 ahc_aha394XX_setup(struct ahc_softc *ahc)
2412 {
2413         ahc_dev_softc_t pci;
2414
2415         pci = ahc->dev_softc;
2416         switch (ahc_get_pci_slot(pci)) {
2417         case AHC_394X_SLOT_CHANNEL_A:
2418                 ahc->channel = 'A';
2419                 break;
2420         case AHC_394X_SLOT_CHANNEL_B:
2421                 ahc->channel = 'B';
2422                 break;
2423         default:
2424                 printf("adapter at unexpected slot %d\n"
2425                        "unable to map to a channel\n",
2426                        ahc_get_pci_slot(pci));
2427                 ahc->channel = 'A';
2428         }
2429         return (0);
2430 }
2431
2432 static int
2433 ahc_aha398XX_setup(struct ahc_softc *ahc)
2434 {
2435         ahc_dev_softc_t pci;
2436
2437         pci = ahc->dev_softc;
2438         switch (ahc_get_pci_slot(pci)) {
2439         case AHC_398X_SLOT_CHANNEL_A:
2440                 ahc->channel = 'A';
2441                 break;
2442         case AHC_398X_SLOT_CHANNEL_B:
2443                 ahc->channel = 'B';
2444                 break;
2445         case AHC_398X_SLOT_CHANNEL_C:
2446                 ahc->channel = 'C';
2447                 break;
2448         default:
2449                 printf("adapter at unexpected slot %d\n"
2450                        "unable to map to a channel\n",
2451                        ahc_get_pci_slot(pci));
2452                 ahc->channel = 'A';
2453                 break;
2454         }
2455         ahc->flags |= AHC_LARGE_SEEPROM;
2456         return (0);
2457 }
2458
2459 static int
2460 ahc_aha494XX_setup(struct ahc_softc *ahc)
2461 {
2462         ahc_dev_softc_t pci;
2463
2464         pci = ahc->dev_softc;
2465         switch (ahc_get_pci_slot(pci)) {
2466         case AHC_494X_SLOT_CHANNEL_A:
2467                 ahc->channel = 'A';
2468                 break;
2469         case AHC_494X_SLOT_CHANNEL_B:
2470                 ahc->channel = 'B';
2471                 break;
2472         case AHC_494X_SLOT_CHANNEL_C:
2473                 ahc->channel = 'C';
2474                 break;
2475         case AHC_494X_SLOT_CHANNEL_D:
2476                 ahc->channel = 'D';
2477                 break;
2478         default:
2479                 printf("adapter at unexpected slot %d\n"
2480                        "unable to map to a channel\n",
2481                        ahc_get_pci_slot(pci));
2482                 ahc->channel = 'A';
2483         }
2484         ahc->flags |= AHC_LARGE_SEEPROM;
2485         return (0);
2486 }