MPSAFE locking for the ahc/ahd drivers using lockmgr locks.
[dragonfly.git] / sys / dev / disk / 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#78 $
43  *
44  * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_pci.c,v 1.35 2005/09/22 05:11:35 gibbs Exp $
45  * $DragonFly: src/sys/dev/disk/aic7xxx/aic7xxx_pci.c,v 1.14 2008/02/09 18:13:13 pavalos Exp $
46  */
47
48 #ifdef __linux__
49 #include "aic7xxx_osm.h"
50 #include "aic7xxx_inline.h"
51 #include "aic7xxx_93cx6.h"
52 #else
53 #include "aic7xxx_osm.h"
54 #include "aic7xxx_inline.h"
55 #include "aic7xxx_93cx6.h"
56 #endif
57
58 static __inline uint64_t
59 ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
60 {
61         uint64_t id;
62
63         id = subvendor
64            | (subdevice << 16)
65            | ((uint64_t)vendor << 32)
66            | ((uint64_t)device << 48);
67
68         return (id);
69 }
70
71 #define ID_ALL_MASK                     0xFFFFFFFFFFFFFFFFull
72 #define ID_DEV_VENDOR_MASK              0xFFFFFFFF00000000ull
73 #define ID_9005_GENERIC_MASK            0xFFF0FFFF00000000ull
74 #define ID_9005_SISL_MASK               0x000FFFFF00000000ull
75 #define ID_9005_SISL_ID                 0x0005900500000000ull
76 #define ID_AIC7850                      0x5078900400000000ull
77 #define ID_AHA_2902_04_10_15_20C_30C    0x5078900478509004ull
78 #define ID_AIC7855                      0x5578900400000000ull
79 #define ID_AIC7859                      0x3860900400000000ull
80 #define ID_AHA_2930CU                   0x3860900438699004ull
81 #define ID_AIC7860                      0x6078900400000000ull
82 #define ID_AIC7860C                     0x6078900478609004ull
83 #define ID_AHA_1480A                    0x6075900400000000ull
84 #define ID_AHA_2940AU_0                 0x6178900400000000ull
85 #define ID_AHA_2940AU_1                 0x6178900478619004ull
86 #define ID_AHA_2940AU_CN                0x2178900478219004ull
87 #define ID_AHA_2930C_VAR                0x6038900438689004ull
88
89 #define ID_AIC7870                      0x7078900400000000ull
90 #define ID_AHA_2940                     0x7178900400000000ull
91 #define ID_AHA_3940                     0x7278900400000000ull
92 #define ID_AHA_398X                     0x7378900400000000ull
93 #define ID_AHA_2944                     0x7478900400000000ull
94 #define ID_AHA_3944                     0x7578900400000000ull
95 #define ID_AHA_4944                     0x7678900400000000ull
96
97 #define ID_AIC7880                      0x8078900400000000ull
98 #define ID_AIC7880_B                    0x8078900478809004ull
99 #define ID_AHA_2940U                    0x8178900400000000ull
100 #define ID_AHA_3940U                    0x8278900400000000ull
101 #define ID_AHA_2944U                    0x8478900400000000ull
102 #define ID_AHA_3944U                    0x8578900400000000ull
103 #define ID_AHA_398XU                    0x8378900400000000ull
104 #define ID_AHA_4944U                    0x8678900400000000ull
105 #define ID_AHA_2940UB                   0x8178900478819004ull
106 #define ID_AHA_2930U                    0x8878900478889004ull
107 #define ID_AHA_2940U_PRO                0x8778900478879004ull
108 #define ID_AHA_2940U_CN                 0x0078900478009004ull
109
110 #define ID_AIC7895                      0x7895900478959004ull
111 #define ID_AIC7895_ARO                  0x7890900478939004ull
112 #define ID_AIC7895_ARO_MASK             0xFFF0FFFFFFFFFFFFull
113 #define ID_AHA_2940U_DUAL               0x7895900478919004ull
114 #define ID_AHA_3940AU                   0x7895900478929004ull
115 #define ID_AHA_3944AU                   0x7895900478949004ull
116
117 #define ID_AIC7890                      0x001F9005000F9005ull
118 #define ID_AIC7890_ARO                  0x00139005000F9005ull
119 #define ID_AAA_131U2                    0x0013900500039005ull
120 #define ID_AHA_2930U2                   0x0011900501819005ull
121 #define ID_AHA_2940U2B                  0x00109005A1009005ull
122 #define ID_AHA_2940U2_OEM               0x0010900521809005ull
123 #define ID_AHA_2940U2                   0x00109005A1809005ull
124 #define ID_AHA_2950U2B                  0x00109005E1009005ull
125
126 #define ID_AIC7892                      0x008F9005FFFF9005ull
127 #define ID_AIC7892_ARO                  0x00839005FFFF9005ull
128 #define ID_AHA_29160                    0x00809005E2A09005ull
129 #define ID_AHA_29160_CPQ                0x00809005E2A00E11ull
130 #define ID_AHA_29160N                   0x0080900562A09005ull
131 #define ID_AHA_29160C                   0x0080900562209005ull
132 #define ID_AHA_29160B                   0x00809005E2209005ull
133 #define ID_AHA_19160B                   0x0081900562A19005ull
134 #define ID_AHA_2915_30LP                0x0082900502109005ull
135
136 #define ID_AIC7896                      0x005F9005FFFF9005ull
137 #define ID_AIC7896_ARO                  0x00539005FFFF9005ull
138 #define ID_AHA_3950U2B_0                0x00509005FFFF9005ull
139 #define ID_AHA_3950U2B_1                0x00509005F5009005ull
140 #define ID_AHA_3950U2D_0                0x00519005FFFF9005ull
141 #define ID_AHA_3950U2D_1                0x00519005B5009005ull
142
143 #define ID_AIC7899                      0x00CF9005FFFF9005ull
144 #define ID_AIC7899_ARO                  0x00C39005FFFF9005ull
145 #define ID_AHA_3960D                    0x00C09005F6209005ull
146 #define ID_AHA_3960D_CPQ                0x00C09005F6200E11ull
147
148 #define ID_AIC7810                      0x1078900400000000ull
149 #define ID_AIC7815                      0x7815900400000000ull
150
151 #define DEVID_9005_TYPE(id) ((id) & 0xF)
152 #define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
153 #define         DEVID_9005_TYPE_AAA             0x3     /* RAID Card */
154 #define         DEVID_9005_TYPE_SISL            0x5     /* Container ROMB */
155 #define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
156
157 #define DEVID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
158 #define         DEVID_9005_MAXRATE_U160         0x0
159 #define         DEVID_9005_MAXRATE_ULTRA2       0x1
160 #define         DEVID_9005_MAXRATE_ULTRA        0x2
161 #define         DEVID_9005_MAXRATE_FAST         0x3
162
163 #define DEVID_9005_MFUNC(id) (((id) & 0x40) >> 6)
164
165 #define DEVID_9005_CLASS(id) (((id) & 0xFF00) >> 8)
166 #define         DEVID_9005_CLASS_SPI            0x0     /* Parallel SCSI */
167
168 #define SUBID_9005_TYPE(id) ((id) & 0xF)
169 #define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
170 #define         SUBID_9005_TYPE_CARD            0x0     /* Standard Card */
171 #define         SUBID_9005_TYPE_LCCARD          0x1     /* Low Cost Card */
172 #define         SUBID_9005_TYPE_RAID            0x3     /* Combined with Raid */
173
174 #define SUBID_9005_TYPE_KNOWN(id)                       \
175           ((((id) & 0xF) == SUBID_9005_TYPE_MB)         \
176         || (((id) & 0xF) == SUBID_9005_TYPE_CARD)       \
177         || (((id) & 0xF) == SUBID_9005_TYPE_LCCARD)     \
178         || (((id) & 0xF) == SUBID_9005_TYPE_RAID))
179
180 #define SUBID_9005_MAXRATE(id) (((id) & 0x30) >> 4)
181 #define         SUBID_9005_MAXRATE_ULTRA2       0x0
182 #define         SUBID_9005_MAXRATE_ULTRA        0x1
183 #define         SUBID_9005_MAXRATE_U160         0x2
184 #define         SUBID_9005_MAXRATE_RESERVED     0x3
185
186 #define SUBID_9005_SEEPTYPE(id)                                         \
187         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
188          ? ((id) & 0xC0) >> 6                                           \
189          : ((id) & 0x300) >> 8)
190 #define         SUBID_9005_SEEPTYPE_NONE        0x0
191 #define         SUBID_9005_SEEPTYPE_1K          0x1
192 #define         SUBID_9005_SEEPTYPE_2K_4K       0x2
193 #define         SUBID_9005_SEEPTYPE_RESERVED    0x3
194 #define SUBID_9005_AUTOTERM(id)                                         \
195         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
196          ? (((id) & 0x400) >> 10) == 0                                  \
197          : (((id) & 0x40) >> 6) == 0)
198
199 #define SUBID_9005_NUMCHAN(id)                                          \
200         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
201          ? ((id) & 0x300) >> 8                                          \
202          : ((id) & 0xC00) >> 10)
203
204 #define SUBID_9005_LEGACYCONN(id)                                       \
205         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
206          ? 0                                                            \
207          : ((id) & 0x80) >> 7)
208
209 #define SUBID_9005_MFUNCENB(id)                                         \
210         ((SUBID_9005_TYPE(id) == SUBID_9005_TYPE_MB)                    \
211          ? ((id) & 0x800) >> 11                                         \
212          : ((id) & 0x1000) >> 12)
213 /*
214  * Informational only. Should use chip register to be
215  * certain, but may be use in identification strings.
216  */
217 #define SUBID_9005_CARD_SCSIWIDTH_MASK  0x2000
218 #define SUBID_9005_CARD_PCIWIDTH_MASK   0x4000
219 #define SUBID_9005_CARD_SEDIFF_MASK     0x8000
220
221 static ahc_device_setup_t ahc_aic785X_setup;
222 static ahc_device_setup_t ahc_aic7860_setup;
223 static ahc_device_setup_t ahc_apa1480_setup;
224 static ahc_device_setup_t ahc_aic7870_setup;
225 static ahc_device_setup_t ahc_aha394X_setup;
226 static ahc_device_setup_t ahc_aha494X_setup;
227 static ahc_device_setup_t ahc_aha398X_setup;
228 static ahc_device_setup_t ahc_aic7880_setup;
229 static ahc_device_setup_t ahc_aha2940Pro_setup;
230 static ahc_device_setup_t ahc_aha394XU_setup;
231 static ahc_device_setup_t ahc_aha398XU_setup;
232 static ahc_device_setup_t ahc_aic7890_setup;
233 static ahc_device_setup_t ahc_aic7892_setup;
234 static ahc_device_setup_t ahc_aic7895_setup;
235 static ahc_device_setup_t ahc_aic7896_setup;
236 static ahc_device_setup_t ahc_aic7899_setup;
237 static ahc_device_setup_t ahc_aha29160C_setup;
238 static ahc_device_setup_t ahc_raid_setup;
239 static ahc_device_setup_t ahc_aha394XX_setup;
240 static ahc_device_setup_t ahc_aha494XX_setup;
241 static ahc_device_setup_t ahc_aha398XX_setup;
242
243 struct ahc_pci_identity ahc_pci_ident_table [] =
244 {
245         /* aic7850 based controllers */
246         {
247                 ID_AHA_2902_04_10_15_20C_30C,
248                 ID_ALL_MASK,
249                 "Adaptec 2902/04/10/15/20C/30C SCSI adapter",
250                 ahc_aic785X_setup
251         },
252         /* aic7860 based controllers */
253         {
254                 ID_AHA_2930CU,
255                 ID_ALL_MASK,
256                 "Adaptec 2930CU SCSI adapter",
257                 ahc_aic7860_setup
258         },
259         {
260                 ID_AHA_1480A & ID_DEV_VENDOR_MASK,
261                 ID_DEV_VENDOR_MASK,
262                 "Adaptec 1480A Ultra SCSI adapter",
263                 ahc_apa1480_setup
264         },
265         {
266                 ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
267                 ID_DEV_VENDOR_MASK,
268                 "Adaptec 2940A Ultra SCSI adapter",
269                 ahc_aic7860_setup
270         },
271         {
272                 ID_AHA_2940AU_CN & ID_DEV_VENDOR_MASK,
273                 ID_DEV_VENDOR_MASK,
274                 "Adaptec 2940A/CN Ultra SCSI adapter",
275                 ahc_aic7860_setup
276         },
277         {
278                 ID_AHA_2930C_VAR & ID_DEV_VENDOR_MASK,
279                 ID_DEV_VENDOR_MASK,
280                 "Adaptec 2930C Ultra SCSI adapter (VAR)",
281                 ahc_aic7860_setup
282         },
283         /* aic7870 based controllers */
284         {
285                 ID_AHA_2940,
286                 ID_ALL_MASK,
287                 "Adaptec 2940 SCSI adapter",
288                 ahc_aic7870_setup
289         },
290         {
291                 ID_AHA_3940,
292                 ID_ALL_MASK,
293                 "Adaptec 3940 SCSI adapter",
294                 ahc_aha394X_setup
295         },
296         {
297                 ID_AHA_398X,
298                 ID_ALL_MASK,
299                 "Adaptec 398X SCSI RAID adapter",
300                 ahc_aha398X_setup
301         },
302         {
303                 ID_AHA_2944,
304                 ID_ALL_MASK,
305                 "Adaptec 2944 SCSI adapter",
306                 ahc_aic7870_setup
307         },
308         {
309                 ID_AHA_3944,
310                 ID_ALL_MASK,
311                 "Adaptec 3944 SCSI adapter",
312                 ahc_aha394X_setup
313         },
314         {
315                 ID_AHA_4944,
316                 ID_ALL_MASK,
317                 "Adaptec 4944 SCSI adapter",
318                 ahc_aha494X_setup
319         },
320         /* aic7880 based controllers */
321         {
322                 ID_AHA_2940U & ID_DEV_VENDOR_MASK,
323                 ID_DEV_VENDOR_MASK,
324                 "Adaptec 2940 Ultra SCSI adapter",
325                 ahc_aic7880_setup
326         },
327         {
328                 ID_AHA_3940U & ID_DEV_VENDOR_MASK,
329                 ID_DEV_VENDOR_MASK,
330                 "Adaptec 3940 Ultra SCSI adapter",
331                 ahc_aha394XU_setup
332         },
333         {
334                 ID_AHA_2944U & ID_DEV_VENDOR_MASK,
335                 ID_DEV_VENDOR_MASK,
336                 "Adaptec 2944 Ultra SCSI adapter",
337                 ahc_aic7880_setup
338         },
339         {
340                 ID_AHA_3944U & ID_DEV_VENDOR_MASK,
341                 ID_DEV_VENDOR_MASK,
342                 "Adaptec 3944 Ultra SCSI adapter",
343                 ahc_aha394XU_setup
344         },
345         {
346                 ID_AHA_398XU & ID_DEV_VENDOR_MASK,
347                 ID_DEV_VENDOR_MASK,
348                 "Adaptec 398X Ultra SCSI RAID adapter",
349                 ahc_aha398XU_setup
350         },
351         {
352                 /*
353                  * XXX Don't know the slot numbers
354                  * so we can't identify channels
355                  */
356                 ID_AHA_4944U & ID_DEV_VENDOR_MASK,
357                 ID_DEV_VENDOR_MASK,
358                 "Adaptec 4944 Ultra SCSI adapter",
359                 ahc_aic7880_setup
360         },
361         {
362                 ID_AHA_2930U & ID_DEV_VENDOR_MASK,
363                 ID_DEV_VENDOR_MASK,
364                 "Adaptec 2930 Ultra SCSI adapter",
365                 ahc_aic7880_setup
366         },
367         {
368                 ID_AHA_2940U_PRO & ID_DEV_VENDOR_MASK,
369                 ID_DEV_VENDOR_MASK,
370                 "Adaptec 2940 Pro Ultra SCSI adapter",
371                 ahc_aha2940Pro_setup
372         },
373         {
374                 ID_AHA_2940U_CN & ID_DEV_VENDOR_MASK,
375                 ID_DEV_VENDOR_MASK,
376                 "Adaptec 2940/CN Ultra SCSI adapter",
377                 ahc_aic7880_setup
378         },
379         /* Ignore all SISL (AAC on MB) based controllers. */
380         {
381                 ID_9005_SISL_ID,
382                 ID_9005_SISL_MASK,
383                 NULL,
384                 NULL
385         },
386         /* aic7890 based controllers */
387         {
388                 ID_AHA_2930U2,
389                 ID_ALL_MASK,
390                 "Adaptec 2930 Ultra2 SCSI adapter",
391                 ahc_aic7890_setup
392         },
393         {
394                 ID_AHA_2940U2B,
395                 ID_ALL_MASK,
396                 "Adaptec 2940B Ultra2 SCSI adapter",
397                 ahc_aic7890_setup
398         },
399         {
400                 ID_AHA_2940U2_OEM,
401                 ID_ALL_MASK,
402                 "Adaptec 2940 Ultra2 SCSI adapter (OEM)",
403                 ahc_aic7890_setup
404         },
405         {
406                 ID_AHA_2940U2,
407                 ID_ALL_MASK,
408                 "Adaptec 2940 Ultra2 SCSI adapter",
409                 ahc_aic7890_setup
410         },
411         {
412                 ID_AHA_2950U2B,
413                 ID_ALL_MASK,
414                 "Adaptec 2950 Ultra2 SCSI adapter",
415                 ahc_aic7890_setup
416         },
417         {
418                 ID_AIC7890_ARO,
419                 ID_ALL_MASK,
420                 "Adaptec aic7890/91 Ultra2 SCSI adapter (ARO)",
421                 ahc_aic7890_setup
422         },
423         {
424                 ID_AAA_131U2,
425                 ID_ALL_MASK,
426                 "Adaptec AAA-131 Ultra2 RAID adapter",
427                 ahc_aic7890_setup
428         },
429         /* aic7892 based controllers */
430         {
431                 ID_AHA_29160,
432                 ID_ALL_MASK,
433                 "Adaptec 29160 Ultra160 SCSI adapter",
434                 ahc_aic7892_setup
435         },
436         {
437                 ID_AHA_29160_CPQ,
438                 ID_ALL_MASK,
439                 "Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter",
440                 ahc_aic7892_setup
441         },
442         {
443                 ID_AHA_29160N,
444                 ID_ALL_MASK,
445                 "Adaptec 29160N Ultra160 SCSI adapter",
446                 ahc_aic7892_setup
447         },
448         {
449                 ID_AHA_29160C,
450                 ID_ALL_MASK,
451                 "Adaptec 29160C Ultra160 SCSI adapter",
452                 ahc_aha29160C_setup
453         },
454         {
455                 ID_AHA_29160B,
456                 ID_ALL_MASK,
457                 "Adaptec 29160B Ultra160 SCSI adapter",
458                 ahc_aic7892_setup
459         },
460         {
461                 ID_AHA_19160B,
462                 ID_ALL_MASK,
463                 "Adaptec 19160B Ultra160 SCSI adapter",
464                 ahc_aic7892_setup
465         },
466         {
467                 ID_AIC7892_ARO,
468                 ID_ALL_MASK,
469                 "Adaptec aic7892 Ultra160 SCSI adapter (ARO)",
470                 ahc_aic7892_setup
471         },
472         {
473                 ID_AHA_2915_30LP,
474                 ID_ALL_MASK,
475                 "Adaptec 2915/30LP Ultra160 SCSI adapter",
476                 ahc_aic7892_setup
477         },
478         /* aic7895 based controllers */ 
479         {
480                 ID_AHA_2940U_DUAL,
481                 ID_ALL_MASK,
482                 "Adaptec 2940/DUAL Ultra SCSI adapter",
483                 ahc_aic7895_setup
484         },
485         {
486                 ID_AHA_3940AU,
487                 ID_ALL_MASK,
488                 "Adaptec 3940A Ultra SCSI adapter",
489                 ahc_aic7895_setup
490         },
491         {
492                 ID_AHA_3944AU,
493                 ID_ALL_MASK,
494                 "Adaptec 3944A Ultra SCSI adapter",
495                 ahc_aic7895_setup
496         },
497         {
498                 ID_AIC7895_ARO,
499                 ID_AIC7895_ARO_MASK,
500                 "Adaptec aic7895 Ultra SCSI adapter (ARO)",
501                 ahc_aic7895_setup
502         },
503         /* aic7896/97 based controllers */      
504         {
505                 ID_AHA_3950U2B_0,
506                 ID_ALL_MASK,
507                 "Adaptec 3950B Ultra2 SCSI adapter",
508                 ahc_aic7896_setup
509         },
510         {
511                 ID_AHA_3950U2B_1,
512                 ID_ALL_MASK,
513                 "Adaptec 3950B Ultra2 SCSI adapter",
514                 ahc_aic7896_setup
515         },
516         {
517                 ID_AHA_3950U2D_0,
518                 ID_ALL_MASK,
519                 "Adaptec 3950D Ultra2 SCSI adapter",
520                 ahc_aic7896_setup
521         },
522         {
523                 ID_AHA_3950U2D_1,
524                 ID_ALL_MASK,
525                 "Adaptec 3950D Ultra2 SCSI adapter",
526                 ahc_aic7896_setup
527         },
528         {
529                 ID_AIC7896_ARO,
530                 ID_ALL_MASK,
531                 "Adaptec aic7896/97 Ultra2 SCSI adapter (ARO)",
532                 ahc_aic7896_setup
533         },
534         /* aic7899 based controllers */ 
535         {
536                 ID_AHA_3960D,
537                 ID_ALL_MASK,
538                 "Adaptec 3960D Ultra160 SCSI adapter",
539                 ahc_aic7899_setup
540         },
541         {
542                 ID_AHA_3960D_CPQ,
543                 ID_ALL_MASK,
544                 "Adaptec (Compaq OEM) 3960D Ultra160 SCSI adapter",
545                 ahc_aic7899_setup
546         },
547         {
548                 ID_AIC7899_ARO,
549                 ID_ALL_MASK,
550                 "Adaptec aic7899 Ultra160 SCSI adapter (ARO)",
551                 ahc_aic7899_setup
552         },
553         /* Generic chip probes for devices we don't know 'exactly' */
554         {
555                 ID_AIC7850 & ID_DEV_VENDOR_MASK,
556                 ID_DEV_VENDOR_MASK,
557                 "Adaptec aic7850 SCSI adapter",
558                 ahc_aic785X_setup
559         },
560         {
561                 ID_AIC7855 & ID_DEV_VENDOR_MASK,
562                 ID_DEV_VENDOR_MASK,
563                 "Adaptec aic7855 SCSI adapter",
564                 ahc_aic785X_setup
565         },
566         {
567                 ID_AIC7859 & ID_DEV_VENDOR_MASK,
568                 ID_DEV_VENDOR_MASK,
569                 "Adaptec aic7859 SCSI adapter",
570                 ahc_aic7860_setup
571         },
572         {
573                 ID_AIC7860 & ID_DEV_VENDOR_MASK,
574                 ID_DEV_VENDOR_MASK,
575                 "Adaptec aic7860 Ultra SCSI adapter",
576                 ahc_aic7860_setup
577         },
578         {
579                 ID_AIC7870 & ID_DEV_VENDOR_MASK,
580                 ID_DEV_VENDOR_MASK,
581                 "Adaptec aic7870 SCSI adapter",
582                 ahc_aic7870_setup
583         },
584         {
585                 ID_AIC7880 & ID_DEV_VENDOR_MASK,
586                 ID_DEV_VENDOR_MASK,
587                 "Adaptec aic7880 Ultra SCSI adapter",
588                 ahc_aic7880_setup
589         },
590         {
591                 ID_AIC7890 & ID_9005_GENERIC_MASK,
592                 ID_9005_GENERIC_MASK,
593                 "Adaptec aic7890/91 Ultra2 SCSI adapter",
594                 ahc_aic7890_setup
595         },
596         {
597                 ID_AIC7892 & ID_9005_GENERIC_MASK,
598                 ID_9005_GENERIC_MASK,
599                 "Adaptec aic7892 Ultra160 SCSI adapter",
600                 ahc_aic7892_setup
601         },
602         {
603                 ID_AIC7895 & ID_DEV_VENDOR_MASK,
604                 ID_DEV_VENDOR_MASK,
605                 "Adaptec aic7895 Ultra SCSI adapter",
606                 ahc_aic7895_setup
607         },
608         {
609                 ID_AIC7896 & ID_9005_GENERIC_MASK,
610                 ID_9005_GENERIC_MASK,
611                 "Adaptec aic7896/97 Ultra2 SCSI adapter",
612                 ahc_aic7896_setup
613         },
614         {
615                 ID_AIC7899 & ID_9005_GENERIC_MASK,
616                 ID_9005_GENERIC_MASK,
617                 "Adaptec aic7899 Ultra160 SCSI adapter",
618                 ahc_aic7899_setup
619         },
620         {
621                 ID_AIC7810 & ID_DEV_VENDOR_MASK,
622                 ID_DEV_VENDOR_MASK,
623                 "Adaptec aic7810 RAID memory controller",
624                 ahc_raid_setup
625         },
626         {
627                 ID_AIC7815 & ID_DEV_VENDOR_MASK,
628                 ID_DEV_VENDOR_MASK,
629                 "Adaptec aic7815 RAID memory controller",
630                 ahc_raid_setup
631         }
632 };
633
634 const u_int ahc_num_pci_devs = NUM_ELEMENTS(ahc_pci_ident_table);
635                 
636 #define AHC_394X_SLOT_CHANNEL_A 4
637 #define AHC_394X_SLOT_CHANNEL_B 5
638
639 #define AHC_398X_SLOT_CHANNEL_A 4
640 #define AHC_398X_SLOT_CHANNEL_B 8
641 #define AHC_398X_SLOT_CHANNEL_C 12
642
643 #define AHC_494X_SLOT_CHANNEL_A 4
644 #define AHC_494X_SLOT_CHANNEL_B 5
645 #define AHC_494X_SLOT_CHANNEL_C 6
646 #define AHC_494X_SLOT_CHANNEL_D 7
647
648 #define DEVCONFIG               0x40
649 #define         PCIERRGENDIS    0x80000000ul
650 #define         SCBSIZE32       0x00010000ul    /* aic789X only */
651 #define         REXTVALID       0x00001000ul    /* ultra cards only */
652 #define         MPORTMODE       0x00000400ul    /* aic7870+ only */
653 #define         RAMPSM          0x00000200ul    /* aic7870+ only */
654 #define         VOLSENSE        0x00000100ul
655 #define         PCI64BIT        0x00000080ul    /* 64Bit PCI bus (Ultra2 Only)*/
656 #define         SCBRAMSEL       0x00000080ul
657 #define         MRDCEN          0x00000040ul
658 #define         EXTSCBTIME      0x00000020ul    /* aic7870 only */
659 #define         EXTSCBPEN       0x00000010ul    /* aic7870 only */
660 #define         BERREN          0x00000008ul
661 #define         DACEN           0x00000004ul
662 #define         STPWLEVEL       0x00000002ul
663 #define         DIFACTNEGEN     0x00000001ul    /* aic7870 only */
664
665 #define CSIZE_LATTIME           0x0c
666 #define         CACHESIZE       0x0000003ful    /* only 5 bits */
667 #define         LATTIME         0x0000ff00ul
668
669 /* PCI STATUS definitions */
670 #define DPE     0x80
671 #define SSE     0x40
672 #define RMA     0x20
673 #define RTA     0x10
674 #define STA     0x08
675 #define DPR     0x01
676
677 static int ahc_9005_subdevinfo_valid(uint16_t vendor, uint16_t device,
678                                      uint16_t subvendor, uint16_t subdevice);
679 static int ahc_ext_scbram_present(struct ahc_softc *ahc);
680 static void ahc_scbram_config(struct ahc_softc *ahc, int enable,
681                                   int pcheck, int fast, int large);
682 static void ahc_probe_ext_scbram(struct ahc_softc *ahc);
683 static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
684 static void ahc_parse_pci_eeprom(struct ahc_softc *ahc,
685                                  struct seeprom_config *sc);
686 static void configure_termination(struct ahc_softc *ahc,
687                                   struct seeprom_descriptor *sd,
688                                   u_int adapter_control,
689                                   u_int *sxfrctl1);
690
691 static void ahc_new_term_detect(struct ahc_softc *ahc,
692                                 int *enableSEC_low,
693                                 int *enableSEC_high,
694                                 int *enablePRI_low,
695                                 int *enablePRI_high,
696                                 int *eeprom_present);
697 static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
698                                  int *internal68_present,
699                                  int *externalcable_present,
700                                  int *eeprom_present);
701 static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
702                                  int *externalcable_present,
703                                  int *eeprom_present);
704 static void    write_brdctl(struct ahc_softc *ahc, uint8_t value);
705 static uint8_t read_brdctl(struct ahc_softc *ahc);
706 static void ahc_pci_intr(struct ahc_softc *ahc);
707 static int  ahc_pci_chip_init(struct ahc_softc *ahc);
708 static int  ahc_pci_suspend(struct ahc_softc *ahc);
709 static int  ahc_pci_resume(struct ahc_softc *ahc);
710
711 static int
712 ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
713                           uint16_t subdevice, uint16_t subvendor)
714 {
715         int result;
716
717         /* Default to invalid. */
718         result = 0;
719         if (vendor == 0x9005
720          && subvendor == 0x9005
721          && subdevice != device
722          && SUBID_9005_TYPE_KNOWN(subdevice) != 0) {
723
724                 switch (SUBID_9005_TYPE(subdevice)) {
725                 case SUBID_9005_TYPE_MB:
726                         break;
727                 case SUBID_9005_TYPE_CARD:
728                 case SUBID_9005_TYPE_LCCARD:
729                         /*
730                          * Currently only trust Adaptec cards to
731                          * get the sub device info correct.
732                          */
733                         if (DEVID_9005_TYPE(device) == DEVID_9005_TYPE_HBA)
734                                 result = 1;
735                         break;
736                 case SUBID_9005_TYPE_RAID:
737                         break;
738                 default:
739                         break;
740                 }
741         }
742         return (result);
743 }
744
745 struct ahc_pci_identity *
746 ahc_find_pci_device(aic_dev_softc_t pci)
747 {
748         uint64_t  full_id;
749         uint16_t  device;
750         uint16_t  vendor;
751         uint16_t  subdevice;
752         uint16_t  subvendor;
753         struct    ahc_pci_identity *entry;
754         u_int     i;
755
756         vendor = aic_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
757         device = aic_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
758         subvendor = aic_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
759         subdevice = aic_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
760         full_id = ahc_compose_id(device, vendor, subdevice, subvendor);
761
762         /*
763          * If the second function is not hooked up, ignore it.
764          * Unfortunately, not all MB vendors implement the
765          * subdevice ID as per the Adaptec spec, so do our best
766          * to sanity check it prior to accepting the subdevice
767          * ID as valid.
768          */
769         if (aic_get_pci_function(pci) > 0
770          && ahc_9005_subdevinfo_valid(vendor, device, subvendor, subdevice)
771          && SUBID_9005_MFUNCENB(subdevice) == 0)
772                 return (NULL);
773
774         for (i = 0; i < ahc_num_pci_devs; i++) {
775                 entry = &ahc_pci_ident_table[i];
776                 if (entry->full_id == (full_id & entry->id_mask)) {
777                         /* Honor exclusion entries. */
778                         if (entry->name == NULL)
779                                 return (NULL);
780                         return (entry);
781                 }
782         }
783         return (NULL);
784 }
785
786 int
787 ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
788 {
789         u_int    command;
790         u_int    our_id;
791         u_int    sxfrctl1;
792         u_int    scsiseq;
793         u_int    dscommand0;
794         uint32_t devconfig;
795         int      error;
796         uint8_t  sblkctl;
797
798         our_id = 0;
799         error = entry->setup(ahc);
800         if (error != 0)
801                 return (error);
802         ahc->chip |= AHC_PCI;
803         ahc->description = entry->name;
804
805         aic_power_state_change(ahc, AIC_POWER_STATE_D0);
806
807         error = ahc_pci_map_registers(ahc);
808         if (error != 0)
809                 return (error);
810
811         /*
812          * Before we continue probing the card, ensure that
813          * its interrupts are *disabled*.  We don't want
814          * a misstep to hang the machine in an interrupt
815          * storm.
816          */
817         ahc_intr_enable(ahc, FALSE);
818
819         devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
820
821         /*
822          * If we need to support high memory, enable dual
823          * address cycles.  This bit must be set to enable
824          * high address bit generation even if we are on a
825          * 64bit bus (PCI64BIT set in devconfig).
826          */
827         if ((ahc->flags & AHC_39BIT_ADDRESSING) != 0) {
828
829                 if (bootverbose)
830                         kprintf("%s: Enabling 39Bit Addressing\n",
831                                ahc_name(ahc));
832                 devconfig |= DACEN;
833         }
834         
835         /* Ensure that pci error generation, a test feature, is disabled. */
836         devconfig |= PCIERRGENDIS;
837
838         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
839
840         /* Ensure busmastering is enabled */
841         command = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
842         command |= PCIM_CMD_BUSMASTEREN;
843
844         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
845
846         /* On all PCI adapters, we allow SCB paging */
847         ahc->flags |= AHC_PAGESCBS;
848
849         error = ahc_softc_init(ahc);
850         if (error != 0)
851                 return (error);
852
853         /*
854          * Disable PCI parity error checking.  Users typically
855          * do this to work around broken PCI chipsets that get
856          * the parity timing wrong and thus generate lots of spurious
857          * errors.  The chip only allows us to disable *all* parity
858          * error reporting when doing this, so CIO bus, scb ram, and
859          * scratch ram parity errors will be ignored too.
860          */
861         if ((ahc->flags & AHC_DISABLE_PCI_PERR) != 0)
862                 ahc->seqctl |= FAILDIS;
863
864         ahc->bus_intr = ahc_pci_intr;
865         ahc->bus_chip_init = ahc_pci_chip_init;
866         ahc->bus_suspend = ahc_pci_suspend;
867         ahc->bus_resume = ahc_pci_resume;
868
869         /* Remeber how the card was setup in case there is no SEEPROM */
870         if ((ahc_inb(ahc, HCNTRL) & POWRDN) == 0) {
871                 ahc_pause(ahc);
872                 if ((ahc->features & AHC_ULTRA2) != 0)
873                         our_id = ahc_inb(ahc, SCSIID_ULTRA2) & OID;
874                 else
875                         our_id = ahc_inb(ahc, SCSIID) & OID;
876                 sxfrctl1 = ahc_inb(ahc, SXFRCTL1) & STPWEN;
877                 scsiseq = ahc_inb(ahc, SCSISEQ);
878         } else {
879                 sxfrctl1 = STPWEN;
880                 our_id = 7;
881                 scsiseq = 0;
882         }
883
884         error = ahc_reset(ahc, /*reinit*/FALSE);
885         if (error != 0)
886                 return (ENXIO);
887
888         if ((ahc->features & AHC_DT) != 0) {
889                 u_int sfunct;
890
891                 /* Perform ALT-Mode Setup */
892                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
893                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
894                 ahc_outb(ahc, OPTIONMODE,
895                          OPTIONMODE_DEFAULTS|AUTOACKEN|BUSFREEREV|EXPPHASEDIS);
896                 ahc_outb(ahc, SFUNCT, sfunct);
897
898                 /* Normal mode setup */
899                 ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN
900                                           |TARGCRCENDEN);
901         }
902
903         dscommand0 = ahc_inb(ahc, DSCOMMAND0);
904         dscommand0 |= MPARCKEN|CACHETHEN;
905         if ((ahc->features & AHC_ULTRA2) != 0) {
906
907                 /*
908                  * DPARCKEN doesn't work correctly on
909                  * some MBs so don't use it.
910                  */
911                 dscommand0 &= ~DPARCKEN;
912         }
913
914         /*
915          * Handle chips that must have cache line
916          * streaming (dis/en)abled.
917          */
918         if ((ahc->bugs & AHC_CACHETHEN_DIS_BUG) != 0)
919                 dscommand0 |= CACHETHEN;
920
921         if ((ahc->bugs & AHC_CACHETHEN_BUG) != 0)
922                 dscommand0 &= ~CACHETHEN;
923
924         ahc_outb(ahc, DSCOMMAND0, dscommand0);
925
926         ahc->pci_cachesize =
927             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME,
928                                 /*bytes*/1) & CACHESIZE;
929         ahc->pci_cachesize *= 4;
930
931         if ((ahc->bugs & AHC_PCI_2_1_RETRY_BUG) != 0
932          && ahc->pci_cachesize == 4) {
933
934                 aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
935                                      0, /*bytes*/1);
936                 ahc->pci_cachesize = 0;
937         }
938
939         /*
940          * We cannot perform ULTRA speeds without the presense
941          * of the external precision resistor.
942          */
943         if ((ahc->features & AHC_ULTRA) != 0) {
944                 uint32_t devconfig;
945
946                 devconfig = aic_pci_read_config(ahc->dev_softc,
947                                                 DEVCONFIG, /*bytes*/4);
948                 if ((devconfig & REXTVALID) == 0)
949                         ahc->features &= ~AHC_ULTRA;
950         }
951
952         /* See if we have a SEEPROM and perform auto-term */
953         check_extport(ahc, &sxfrctl1);
954
955         /*
956          * Take the LED out of diagnostic mode
957          */
958         sblkctl = ahc_inb(ahc, SBLKCTL);
959         ahc_outb(ahc, SBLKCTL, (sblkctl & ~(DIAGLEDEN|DIAGLEDON)));
960
961         if ((ahc->features & AHC_ULTRA2) != 0) {
962                 ahc_outb(ahc, DFF_THRSH, RD_DFTHRSH_MAX|WR_DFTHRSH_MAX);
963         } else {
964                 ahc_outb(ahc, DSPCISTATUS, DFTHRSH_100);
965         }
966
967         if (ahc->flags & AHC_USEDEFAULTS) {
968                 /*
969                  * PCI Adapter default setup
970                  * Should only be used if the adapter does not have
971                  * a SEEPROM.
972                  */
973                 /* See if someone else set us up already */
974                 if ((ahc->flags & AHC_NO_BIOS_INIT) == 0
975                  && scsiseq != 0) {
976                         kprintf("%s: Using left over BIOS settings\n",
977                                 ahc_name(ahc));
978                         ahc->flags &= ~AHC_USEDEFAULTS;
979                         ahc->flags |= AHC_BIOS_ENABLED;
980                 } else {
981                         /*
982                          * Assume only one connector and always turn
983                          * on termination.
984                          */
985                         our_id = 0x07;
986                         sxfrctl1 = STPWEN;
987                 }
988                 ahc_outb(ahc, SCSICONF, our_id|ENSPCHK|RESET_SCSI);
989
990                 ahc->our_id = our_id;
991         }
992
993         /*
994          * Take a look to see if we have external SRAM.
995          * We currently do not attempt to use SRAM that is
996          * shared among multiple controllers.
997          */
998         ahc_probe_ext_scbram(ahc);
999
1000         /*
1001          * Record our termination setting for the
1002          * generic initialization routine.
1003          */
1004         if ((sxfrctl1 & STPWEN) != 0)
1005                 ahc->flags |= AHC_TERM_ENB_A;
1006
1007         /*
1008          * Save chip register configuration data for chip resets
1009          * that occur during runtime and resume events.
1010          */
1011         ahc->bus_softc.pci_softc.devconfig =
1012             aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1013         ahc->bus_softc.pci_softc.command =
1014             aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/1);
1015         ahc->bus_softc.pci_softc.csize_lattime =
1016             aic_pci_read_config(ahc->dev_softc, CSIZE_LATTIME, /*bytes*/1);
1017         ahc->bus_softc.pci_softc.dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1018         ahc->bus_softc.pci_softc.dspcistatus = ahc_inb(ahc, DSPCISTATUS);
1019         if ((ahc->features & AHC_DT) != 0) {
1020                 u_int sfunct;
1021
1022                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
1023                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
1024                 ahc->bus_softc.pci_softc.optionmode = ahc_inb(ahc, OPTIONMODE);
1025                 ahc->bus_softc.pci_softc.targcrccnt = ahc_inw(ahc, TARGCRCCNT);
1026                 ahc_outb(ahc, SFUNCT, sfunct);
1027                 ahc->bus_softc.pci_softc.crccontrol1 =
1028                     ahc_inb(ahc, CRCCONTROL1);
1029         }
1030         if ((ahc->features & AHC_MULTI_FUNC) != 0)
1031                 ahc->bus_softc.pci_softc.scbbaddr = ahc_inb(ahc, SCBBADDR);
1032
1033         if ((ahc->features & AHC_ULTRA2) != 0)
1034                 ahc->bus_softc.pci_softc.dff_thrsh = ahc_inb(ahc, DFF_THRSH);
1035
1036         /* Core initialization */
1037         error = ahc_init(ahc);
1038         if (error != 0)
1039                 return (error);
1040
1041         /*
1042          * Allow interrupts now that we are completely setup.
1043          */
1044         error = ahc_pci_map_int(ahc);
1045         if (error != 0)
1046                 return (error);
1047
1048         ahc_lock(ahc);
1049         /*
1050          * Link this softc in with all other ahc instances.
1051          */
1052         ahc_softc_insert(ahc);
1053         ahc_unlock(ahc);
1054         return (0);
1055 }
1056
1057 /*
1058  * Test for the presense of external sram in an
1059  * "unshared" configuration.
1060  */
1061 static int
1062 ahc_ext_scbram_present(struct ahc_softc *ahc)
1063 {
1064         u_int chip;
1065         int ramps;
1066         int single_user;
1067         uint32_t devconfig;
1068
1069         chip = ahc->chip & AHC_CHIPID_MASK;
1070         devconfig = aic_pci_read_config(ahc->dev_softc,
1071                                         DEVCONFIG, /*bytes*/4);
1072         single_user = (devconfig & MPORTMODE) != 0;
1073
1074         if ((ahc->features & AHC_ULTRA2) != 0)
1075                 ramps = (ahc_inb(ahc, DSCOMMAND0) & RAMPS) != 0;
1076         else if (chip == AHC_AIC7895 || chip == AHC_AIC7895C)
1077                 /*
1078                  * External SCBRAM arbitration is flakey
1079                  * on these chips.  Unfortunately this means
1080                  * we don't use the extra SCB ram space on the
1081                  * 3940AUW.
1082                  */
1083                 ramps = 0;
1084         else if (chip >= AHC_AIC7870)
1085                 ramps = (devconfig & RAMPSM) != 0;
1086         else
1087                 ramps = 0;
1088
1089         if (ramps && single_user)
1090                 return (1);
1091         return (0);
1092 }
1093
1094 /*
1095  * Enable external scbram.
1096  */
1097 static void
1098 ahc_scbram_config(struct ahc_softc *ahc, int enable, int pcheck,
1099                   int fast, int large)
1100 {
1101         uint32_t devconfig;
1102
1103         if (ahc->features & AHC_MULTI_FUNC) {
1104                 /*
1105                  * Set the SCB Base addr (highest address bit)
1106                  * depending on which channel we are.
1107                  */
1108                 ahc_outb(ahc, SCBBADDR, aic_get_pci_function(ahc->dev_softc));
1109         }
1110
1111         ahc->flags &= ~AHC_LSCBS_ENABLED;
1112         if (large)
1113                 ahc->flags |= AHC_LSCBS_ENABLED;
1114         devconfig = aic_pci_read_config(ahc->dev_softc, DEVCONFIG, /*bytes*/4);
1115         if ((ahc->features & AHC_ULTRA2) != 0) {
1116                 u_int dscommand0;
1117
1118                 dscommand0 = ahc_inb(ahc, DSCOMMAND0);
1119                 if (enable)
1120                         dscommand0 &= ~INTSCBRAMSEL;
1121                 else
1122                         dscommand0 |= INTSCBRAMSEL;
1123                 if (large)
1124                         dscommand0 &= ~USCBSIZE32;
1125                 else
1126                         dscommand0 |= USCBSIZE32;
1127                 ahc_outb(ahc, DSCOMMAND0, dscommand0);
1128         } else {
1129                 if (fast)
1130                         devconfig &= ~EXTSCBTIME;
1131                 else
1132                         devconfig |= EXTSCBTIME;
1133                 if (enable)
1134                         devconfig &= ~SCBRAMSEL;
1135                 else
1136                         devconfig |= SCBRAMSEL;
1137                 if (large)
1138                         devconfig &= ~SCBSIZE32;
1139                 else
1140                         devconfig |= SCBSIZE32;
1141         }
1142         if (pcheck)
1143                 devconfig |= EXTSCBPEN;
1144         else
1145                 devconfig &= ~EXTSCBPEN;
1146
1147         aic_pci_write_config(ahc->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
1148 }
1149
1150 /*
1151  * Take a look to see if we have external SRAM.
1152  * We currently do not attempt to use SRAM that is
1153  * shared among multiple controllers.
1154  */
1155 static void
1156 ahc_probe_ext_scbram(struct ahc_softc *ahc)
1157 {
1158         int num_scbs;
1159         int test_num_scbs;
1160         int enable;
1161         int pcheck;
1162         int fast;
1163         int large;
1164
1165         enable = FALSE;
1166         pcheck = FALSE;
1167         fast = FALSE;
1168         large = FALSE;
1169         num_scbs = 0;
1170         
1171         if (ahc_ext_scbram_present(ahc) == 0)
1172                 goto done;
1173
1174         /*
1175          * Probe for the best parameters to use.
1176          */
1177         ahc_scbram_config(ahc, /*enable*/TRUE, pcheck, fast, large);
1178         num_scbs = ahc_probe_scbs(ahc);
1179         if (num_scbs == 0) {
1180                 /* The SRAM wasn't really present. */
1181                 goto done;
1182         }
1183         enable = TRUE;
1184
1185         /*
1186          * Clear any outstanding parity error
1187          * and ensure that parity error reporting
1188          * is enabled.
1189          */
1190         ahc_outb(ahc, SEQCTL, 0);
1191         ahc_outb(ahc, CLRINT, CLRPARERR);
1192         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1193
1194         /* Now see if we can do parity */
1195         ahc_scbram_config(ahc, enable, /*pcheck*/TRUE, fast, large);
1196         num_scbs = ahc_probe_scbs(ahc);
1197         if ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1198          || (ahc_inb(ahc, ERROR) & MPARERR) == 0)
1199                 pcheck = TRUE;
1200
1201         /* Clear any resulting parity error */
1202         ahc_outb(ahc, CLRINT, CLRPARERR);
1203         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1204
1205         /* Now see if we can do fast timing */
1206         ahc_scbram_config(ahc, enable, pcheck, /*fast*/TRUE, large);
1207         test_num_scbs = ahc_probe_scbs(ahc);
1208         if (test_num_scbs == num_scbs
1209          && ((ahc_inb(ahc, INTSTAT) & BRKADRINT) == 0
1210           || (ahc_inb(ahc, ERROR) & MPARERR) == 0))
1211                 fast = TRUE;
1212
1213         /*
1214          * See if we can use large SCBs and still maintain
1215          * the same overall count of SCBs.
1216          */
1217         if ((ahc->features & AHC_LARGE_SCBS) != 0) {
1218                 ahc_scbram_config(ahc, enable, pcheck, fast, /*large*/TRUE);
1219                 test_num_scbs = ahc_probe_scbs(ahc);
1220                 if (test_num_scbs >= num_scbs) {
1221                         large = TRUE;
1222                         num_scbs = test_num_scbs;
1223                         if (num_scbs >= 64) {
1224                                 /*
1225                                  * We have enough space to move the
1226                                  * "busy targets table" into SCB space
1227                                  * and make it qualify all the way to the
1228                                  * lun level.
1229                                  */
1230                                 ahc->flags |= AHC_SCB_BTT;
1231                         }
1232                 }
1233         }
1234 done:
1235         /*
1236          * Disable parity error reporting until we
1237          * can load instruction ram.
1238          */
1239         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1240         /* Clear any latched parity error */
1241         ahc_outb(ahc, CLRINT, CLRPARERR);
1242         ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1243         if (bootverbose && enable) {
1244                 kprintf("%s: External SRAM, %s access%s, %dbytes/SCB\n",
1245                        ahc_name(ahc), fast ? "fast" : "slow", 
1246                        pcheck ? ", parity checking enabled" : "",
1247                        large ? 64 : 32);
1248         }
1249         ahc_scbram_config(ahc, enable, pcheck, fast, large);
1250 }
1251
1252 /*
1253  * Perform some simple tests that should catch situations where
1254  * our registers are invalidly mapped.
1255  */
1256 int
1257 ahc_pci_test_register_access(struct ahc_softc *ahc)
1258 {
1259         int      error;
1260         u_int    status1;
1261         uint32_t cmd;
1262         uint8_t  hcntrl;
1263
1264         error = EIO;
1265
1266         /*
1267          * Enable PCI error interrupt status, but suppress NMIs
1268          * generated by SERR raised due to target aborts.
1269          */
1270         cmd = aic_pci_read_config(ahc->dev_softc, PCIR_COMMAND, /*bytes*/2);
1271         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
1272                              cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
1273
1274         /*
1275          * First a simple test to see if any
1276          * registers can be read.  Reading
1277          * HCNTRL has no side effects and has
1278          * at least one bit that is guaranteed to
1279          * be zero so it is a good register to
1280          * use for this test.
1281          */
1282         hcntrl = ahc_inb(ahc, HCNTRL);
1283
1284         if (hcntrl == 0xFF)
1285                 goto fail;
1286
1287         if ((hcntrl & CHIPRST) != 0) {
1288                 /*
1289                  * The chip has not been initialized since
1290                  * PCI/EISA/VLB bus reset.  Don't trust
1291                  * "left over BIOS data".
1292                  */
1293                 ahc->flags |= AHC_NO_BIOS_INIT;
1294         }
1295
1296         /*
1297          * Next create a situation where write combining
1298          * or read prefetching could be initiated by the
1299          * CPU or host bridge.  Our device does not support
1300          * either, so look for data corruption and/or flagged
1301          * PCI errors.  First pause without causing another
1302          * chip reset.
1303          */
1304         hcntrl &= ~CHIPRST;
1305         ahc_outb(ahc, HCNTRL, hcntrl|PAUSE);
1306         while (ahc_is_paused(ahc) == 0)
1307                 ;
1308
1309         /* Clear any PCI errors that occurred before our driver attached. */
1310         status1 = aic_pci_read_config(ahc->dev_softc,
1311                                       PCIR_STATUS + 1, /*bytes*/1);
1312         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1313                              status1, /*bytes*/1);
1314         ahc_outb(ahc, CLRINT, CLRPARERR);
1315
1316         ahc_outb(ahc, SEQCTL, PERRORDIS);
1317         ahc_outb(ahc, SCBPTR, 0);
1318         ahc_outl(ahc, SCB_BASE, 0x5aa555aa);
1319         if (ahc_inl(ahc, SCB_BASE) != 0x5aa555aa)
1320                 goto fail;
1321
1322         status1 = aic_pci_read_config(ahc->dev_softc,
1323                                       PCIR_STATUS + 1, /*bytes*/1);
1324         if ((status1 & STA) != 0)
1325                 goto fail;
1326
1327         error = 0;
1328
1329 fail:
1330         /* Silently clear any latched errors. */
1331         status1 = aic_pci_read_config(ahc->dev_softc,
1332                                       PCIR_STATUS + 1, /*bytes*/1);
1333         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
1334                              status1, /*bytes*/1);
1335         ahc_outb(ahc, CLRINT, CLRPARERR);
1336         ahc_outb(ahc, SEQCTL, PERRORDIS|FAILDIS);
1337         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
1338         return (error);
1339 }
1340
1341 /*
1342  * Check the external port logic for a serial eeprom
1343  * and termination/cable detection contrls.
1344  */
1345 static void
1346 check_extport(struct ahc_softc *ahc, u_int *sxfrctl1)
1347 {
1348         struct  seeprom_descriptor sd;
1349         struct  seeprom_config *sc;
1350         int     have_seeprom;
1351         int     have_autoterm;
1352
1353         sd.sd_ahc = ahc;
1354         sd.sd_control_offset = SEECTL;          
1355         sd.sd_status_offset = SEECTL;           
1356         sd.sd_dataout_offset = SEECTL;          
1357         sc = ahc->seep_config;
1358
1359         /*
1360          * For some multi-channel devices, the c46 is simply too
1361          * small to work.  For the other controller types, we can
1362          * get our information from either SEEPROM type.  Set the
1363          * type to start our probe with accordingly.
1364          */
1365         if (ahc->flags & AHC_LARGE_SEEPROM)
1366                 sd.sd_chip = C56_66;
1367         else
1368                 sd.sd_chip = C46;
1369
1370         sd.sd_MS = SEEMS;
1371         sd.sd_RDY = SEERDY;
1372         sd.sd_CS = SEECS;
1373         sd.sd_CK = SEECK;
1374         sd.sd_DO = SEEDO;
1375         sd.sd_DI = SEEDI;
1376
1377         have_seeprom = ahc_acquire_seeprom(ahc, &sd);
1378         if (have_seeprom) {
1379
1380                 if (bootverbose) 
1381                         kprintf("%s: Reading SEEPROM...", ahc_name(ahc));
1382
1383                 for (;;) {
1384                         u_int start_addr;
1385
1386                         start_addr = 32 * (ahc->channel - 'A');
1387
1388                         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
1389                                                         start_addr,
1390                                                         sizeof(*sc)/2);
1391
1392                         if (have_seeprom)
1393                                 have_seeprom = ahc_verify_cksum(sc);
1394
1395                         if (have_seeprom != 0 || sd.sd_chip == C56_66) {
1396                                 if (bootverbose) {
1397                                         if (have_seeprom == 0)
1398                                                 kprintf ("checksum error\n");
1399                                         else
1400                                                 kprintf ("done.\n");
1401                                 }
1402                                 break;
1403                         }
1404                         sd.sd_chip = C56_66;
1405                 }
1406                 ahc_release_seeprom(&sd);
1407
1408                 /* Remember the SEEPROM type for later */
1409                 if (sd.sd_chip == C56_66)
1410                         ahc->flags |= AHC_LARGE_SEEPROM;
1411         }
1412
1413         if (!have_seeprom) {
1414                 /*
1415                  * Pull scratch ram settings and treat them as
1416                  * if they are the contents of an seeprom if
1417                  * the 'ADPT' signature is found in SCB2.
1418                  * We manually compose the data as 16bit values
1419                  * to avoid endian issues.
1420                  */
1421                 ahc_outb(ahc, SCBPTR, 2);
1422                 if (ahc_inb(ahc, SCB_BASE) == 'A'
1423                  && ahc_inb(ahc, SCB_BASE + 1) == 'D'
1424                  && ahc_inb(ahc, SCB_BASE + 2) == 'P'
1425                  && ahc_inb(ahc, SCB_BASE + 3) == 'T') {
1426                         uint16_t *sc_data;
1427                         int       i;
1428
1429                         sc_data = (uint16_t *)sc;
1430                         for (i = 0; i < 32; i++, sc_data++) {
1431                                 int     j;
1432
1433                                 j = i * 2;
1434                                 *sc_data = ahc_inb(ahc, SRAM_BASE + j)
1435                                          | ahc_inb(ahc, SRAM_BASE + j + 1) << 8;
1436                         }
1437                         have_seeprom = ahc_verify_cksum(sc);
1438                         if (have_seeprom)
1439                                 ahc->flags |= AHC_SCB_CONFIG_USED;
1440                 }
1441                 /*
1442                  * Clear any SCB parity errors in case this data and
1443                  * its associated parity was not initialized by the BIOS
1444                  */
1445                 ahc_outb(ahc, CLRINT, CLRPARERR);
1446                 ahc_outb(ahc, CLRINT, CLRBRKADRINT);
1447         }
1448
1449         if (!have_seeprom) {
1450                 if (bootverbose)
1451                         kprintf("%s: No SEEPROM available.\n", ahc_name(ahc));
1452                 ahc->flags |= AHC_USEDEFAULTS;
1453                 kfree(ahc->seep_config, M_DEVBUF);
1454                 ahc->seep_config = NULL;
1455                 sc = NULL;
1456         } else {
1457                 ahc_parse_pci_eeprom(ahc, sc);
1458         }
1459
1460         /*
1461          * Cards that have the external logic necessary to talk to
1462          * a SEEPROM, are almost certain to have the remaining logic
1463          * necessary for auto-termination control.  This assumption
1464          * hasn't failed yet...
1465          */
1466         have_autoterm = have_seeprom;
1467
1468         /*
1469          * Some low-cost chips have SEEPROM and auto-term control built
1470          * in, instead of using a GAL.  They can tell us directly
1471          * if the termination logic is enabled.
1472          */
1473         if ((ahc->features & AHC_SPIOCAP) != 0) {
1474                 if ((ahc_inb(ahc, SPIOCAP) & SSPIOCPS) == 0)
1475                         have_autoterm = FALSE;
1476         }
1477
1478         if (have_autoterm) {
1479                 ahc->flags |= AHC_HAS_TERM_LOGIC;
1480                 ahc_acquire_seeprom(ahc, &sd);
1481                 configure_termination(ahc, &sd, sc->adapter_control, sxfrctl1);
1482                 ahc_release_seeprom(&sd);
1483         } else if (have_seeprom) {
1484                 *sxfrctl1 &= ~STPWEN;
1485                 if ((sc->adapter_control & CFSTERM) != 0)
1486                         *sxfrctl1 |= STPWEN;
1487                 if (bootverbose)
1488                         kprintf("%s: Low byte termination %sabled\n",
1489                                ahc_name(ahc),
1490                                (*sxfrctl1 & STPWEN) ? "en" : "dis");
1491         }
1492 }
1493
1494 static void
1495 ahc_parse_pci_eeprom(struct ahc_softc *ahc, struct seeprom_config *sc)
1496 {
1497         /*
1498          * Put the data we've collected down into SRAM
1499          * where ahc_init will find it.
1500          */
1501         int      i;
1502         int      max_targ = sc->max_targets & CFMAXTARG;
1503         u_int    scsi_conf;
1504         uint16_t discenable;
1505         uint16_t ultraenb;
1506
1507         discenable = 0;
1508         ultraenb = 0;
1509         if ((sc->adapter_control & CFULTRAEN) != 0) {
1510                 /*
1511                  * Determine if this adapter has a "newstyle"
1512                  * SEEPROM format.
1513                  */
1514                 for (i = 0; i < max_targ; i++) {
1515                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0) {
1516                                 ahc->flags |= AHC_NEWEEPROM_FMT;
1517                                 break;
1518                         }
1519                 }
1520         }
1521
1522         for (i = 0; i < max_targ; i++) {
1523                 u_int     scsirate;
1524                 uint16_t target_mask;
1525
1526                 target_mask = 0x01 << i;
1527                 if (sc->device_flags[i] & CFDISC)
1528                         discenable |= target_mask;
1529                 if ((ahc->flags & AHC_NEWEEPROM_FMT) != 0) {
1530                         if ((sc->device_flags[i] & CFSYNCHISULTRA) != 0)
1531                                 ultraenb |= target_mask;
1532                 } else if ((sc->adapter_control & CFULTRAEN) != 0) {
1533                         ultraenb |= target_mask;
1534                 }
1535                 if ((sc->device_flags[i] & CFXFER) == 0x04
1536                  && (ultraenb & target_mask) != 0) {
1537                         /* Treat 10MHz as a non-ultra speed */
1538                         sc->device_flags[i] &= ~CFXFER;
1539                         ultraenb &= ~target_mask;
1540                 }
1541                 if ((ahc->features & AHC_ULTRA2) != 0) {
1542                         u_int offset;
1543
1544                         if (sc->device_flags[i] & CFSYNCH)
1545                                 offset = MAX_OFFSET_ULTRA2;
1546                         else 
1547                                 offset = 0;
1548                         ahc_outb(ahc, TARG_OFFSET + i, offset);
1549
1550                         /*
1551                          * The ultra enable bits contain the
1552                          * high bit of the ultra2 sync rate
1553                          * field.
1554                          */
1555                         scsirate = (sc->device_flags[i] & CFXFER)
1556                                  | ((ultraenb & target_mask) ? 0x8 : 0x0);
1557                         if (sc->device_flags[i] & CFWIDEB)
1558                                 scsirate |= WIDEXFER;
1559                 } else {
1560                         scsirate = (sc->device_flags[i] & CFXFER) << 4;
1561                         if (sc->device_flags[i] & CFSYNCH)
1562                                 scsirate |= SOFS;
1563                         if (sc->device_flags[i] & CFWIDEB)
1564                                 scsirate |= WIDEXFER;
1565                 }
1566                 ahc_outb(ahc, TARG_SCSIRATE + i, scsirate);
1567         }
1568         ahc->our_id = sc->brtime_id & CFSCSIID;
1569
1570         scsi_conf = (ahc->our_id & 0x7);
1571         if (sc->adapter_control & CFSPARITY)
1572                 scsi_conf |= ENSPCHK;
1573         if (sc->adapter_control & CFRESETB)
1574                 scsi_conf |= RESET_SCSI;
1575
1576         ahc->flags |= (sc->adapter_control & CFBOOTCHAN) >> CFBOOTCHANSHIFT;
1577
1578         if (sc->bios_control & CFEXTEND)
1579                 ahc->flags |= AHC_EXTENDED_TRANS_A;
1580
1581         if (sc->bios_control & CFBIOSEN)
1582                 ahc->flags |= AHC_BIOS_ENABLED;
1583         if (ahc->features & AHC_ULTRA
1584          && (ahc->flags & AHC_NEWEEPROM_FMT) == 0) {
1585                 /* Should we enable Ultra mode? */
1586                 if (!(sc->adapter_control & CFULTRAEN))
1587                         /* Treat us as a non-ultra card */
1588                         ultraenb = 0;
1589         }
1590
1591         if (sc->signature == CFSIGNATURE
1592          || sc->signature == CFSIGNATURE2) {
1593                 uint32_t devconfig;
1594
1595                 /* Honor the STPWLEVEL settings */
1596                 devconfig = aic_pci_read_config(ahc->dev_softc,
1597                                                 DEVCONFIG, /*bytes*/4);
1598                 devconfig &= ~STPWLEVEL;
1599                 if ((sc->bios_control & CFSTPWLEVEL) != 0)
1600                         devconfig |= STPWLEVEL;
1601                 aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
1602                                      devconfig, /*bytes*/4);
1603         }
1604         /* Set SCSICONF info */
1605         ahc_outb(ahc, SCSICONF, scsi_conf);
1606         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
1607         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
1608         ahc_outb(ahc, ULTRA_ENB, ultraenb & 0xff);
1609         ahc_outb(ahc, ULTRA_ENB + 1, (ultraenb >> 8) & 0xff);
1610 }
1611
1612 static void
1613 configure_termination(struct ahc_softc *ahc,
1614                       struct seeprom_descriptor *sd,
1615                       u_int adapter_control,
1616                       u_int *sxfrctl1)
1617 {
1618         uint8_t brddat;
1619         
1620         brddat = 0;
1621
1622         /*
1623          * Update the settings in sxfrctl1 to match the
1624          * termination settings 
1625          */
1626         *sxfrctl1 = 0;
1627         
1628         /*
1629          * SEECS must be on for the GALS to latch
1630          * the data properly.  Be sure to leave MS
1631          * on or we will release the seeprom.
1632          */
1633         SEEPROM_OUTB(sd, sd->sd_MS | sd->sd_CS);
1634         if ((adapter_control & CFAUTOTERM) != 0
1635          || (ahc->features & AHC_NEW_TERMCTL) != 0) {
1636                 int internal50_present;
1637                 int internal68_present;
1638                 int externalcable_present;
1639                 int eeprom_present;
1640                 int enableSEC_low;
1641                 int enableSEC_high;
1642                 int enablePRI_low;
1643                 int enablePRI_high;
1644                 int sum;
1645
1646                 enableSEC_low = 0;
1647                 enableSEC_high = 0;
1648                 enablePRI_low = 0;
1649                 enablePRI_high = 0;
1650                 if ((ahc->features & AHC_NEW_TERMCTL) != 0) {
1651                         ahc_new_term_detect(ahc, &enableSEC_low,
1652                                             &enableSEC_high,
1653                                             &enablePRI_low,
1654                                             &enablePRI_high,
1655                                             &eeprom_present);
1656                         if ((adapter_control & CFSEAUTOTERM) == 0) {
1657                                 if (bootverbose)
1658                                         kprintf("%s: Manual SE Termination\n",
1659                                                ahc_name(ahc));
1660                                 enableSEC_low = (adapter_control & CFSELOWTERM);
1661                                 enableSEC_high =
1662                                     (adapter_control & CFSEHIGHTERM);
1663                         }
1664                         if ((adapter_control & CFAUTOTERM) == 0) {
1665                                 if (bootverbose)
1666                                         kprintf("%s: Manual LVD Termination\n",
1667                                                ahc_name(ahc));
1668                                 enablePRI_low = (adapter_control & CFSTERM);
1669                                 enablePRI_high = (adapter_control & CFWSTERM);
1670                         }
1671                         /* Make the table calculations below happy */
1672                         internal50_present = 0;
1673                         internal68_present = 1;
1674                         externalcable_present = 1;
1675                 } else if ((ahc->features & AHC_SPIOCAP) != 0) {
1676                         aic785X_cable_detect(ahc, &internal50_present,
1677                                              &externalcable_present,
1678                                              &eeprom_present);
1679                         /* Can never support a wide connector. */
1680                         internal68_present = 0;
1681                 } else {
1682                         aic787X_cable_detect(ahc, &internal50_present,
1683                                              &internal68_present,
1684                                              &externalcable_present,
1685                                              &eeprom_present);
1686                 }
1687
1688                 if ((ahc->features & AHC_WIDE) == 0)
1689                         internal68_present = 0;
1690
1691                 if (bootverbose
1692                  && (ahc->features & AHC_ULTRA2) == 0) {
1693                         kprintf("%s: internal 50 cable %s present",
1694                                ahc_name(ahc),
1695                                internal50_present ? "is":"not");
1696
1697                         if ((ahc->features & AHC_WIDE) != 0)
1698                                 kprintf(", internal 68 cable %s present",
1699                                        internal68_present ? "is":"not");
1700                         kprintf("\n%s: external cable %s present\n",
1701                                ahc_name(ahc),
1702                                externalcable_present ? "is":"not");
1703                 }
1704                 if (bootverbose)
1705                         kprintf("%s: BIOS eeprom %s present\n",
1706                                ahc_name(ahc), eeprom_present ? "is" : "not");
1707
1708                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0) {
1709                         /*
1710                          * The 50 pin connector is a separate bus,
1711                          * so force it to always be terminated.
1712                          * In the future, perform current sensing
1713                          * to determine if we are in the middle of
1714                          * a properly terminated bus.
1715                          */
1716                         internal50_present = 0;
1717                 }
1718
1719                 /*
1720                  * Now set the termination based on what
1721                  * we found.
1722                  * Flash Enable = BRDDAT7
1723                  * Secondary High Term Enable = BRDDAT6
1724                  * Secondary Low Term Enable = BRDDAT5 (7890)
1725                  * Primary High Term Enable = BRDDAT4 (7890)
1726                  */
1727                 if ((ahc->features & AHC_ULTRA2) == 0
1728                  && (internal50_present != 0)
1729                  && (internal68_present != 0)
1730                  && (externalcable_present != 0)) {
1731                         kprintf("%s: Illegal cable configuration!!. "
1732                                "Only two connectors on the "
1733                                "adapter may be used at a "
1734                                "time!\n", ahc_name(ahc));
1735
1736                         /*
1737                          * Pretend there are no cables in the hope
1738                          * that having all of the termination on
1739                          * gives us a more stable bus.
1740                          */
1741                         internal50_present = 0;
1742                         internal68_present = 0;
1743                         externalcable_present = 0;
1744                 }
1745
1746                 if ((ahc->features & AHC_WIDE) != 0
1747                  && ((externalcable_present == 0)
1748                   || (internal68_present == 0)
1749                   || (enableSEC_high != 0))) {
1750                         brddat |= BRDDAT6;
1751                         if (bootverbose) {
1752                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1753                                         kprintf("%s: 68 pin termination "
1754                                                "Enabled\n", ahc_name(ahc));
1755                                 else
1756                                         kprintf("%s: %sHigh byte termination "
1757                                                "Enabled\n", ahc_name(ahc),
1758                                                enableSEC_high ? "Secondary "
1759                                                               : "");
1760                         }
1761                 }
1762
1763                 sum = internal50_present + internal68_present
1764                     + externalcable_present;
1765                 if (sum < 2 || (enableSEC_low != 0)) {
1766                         if ((ahc->features & AHC_ULTRA2) != 0)
1767                                 brddat |= BRDDAT5;
1768                         else
1769                                 *sxfrctl1 |= STPWEN;
1770                         if (bootverbose) {
1771                                 if ((ahc->flags & AHC_INT50_SPEEDFLEX) != 0)
1772                                         kprintf("%s: 50 pin termination "
1773                                                "Enabled\n", ahc_name(ahc));
1774                                 else
1775                                         kprintf("%s: %sLow byte termination "
1776                                                "Enabled\n", ahc_name(ahc),
1777                                                enableSEC_low ? "Secondary "
1778                                                              : "");
1779                         }
1780                 }
1781
1782                 if (enablePRI_low != 0) {
1783                         *sxfrctl1 |= STPWEN;
1784                         if (bootverbose)
1785                                 kprintf("%s: Primary Low Byte termination "
1786                                        "Enabled\n", ahc_name(ahc));
1787                 }
1788
1789                 /*
1790                  * Setup STPWEN before setting up the rest of
1791                  * the termination per the tech note on the U160 cards.
1792                  */
1793                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1794
1795                 if (enablePRI_high != 0) {
1796                         brddat |= BRDDAT4;
1797                         if (bootverbose)
1798                                 kprintf("%s: Primary High Byte "
1799                                        "termination Enabled\n",
1800                                        ahc_name(ahc));
1801                 }
1802                 
1803                 write_brdctl(ahc, brddat);
1804
1805         } else {
1806                 if ((adapter_control & CFSTERM) != 0) {
1807                         *sxfrctl1 |= STPWEN;
1808
1809                         if (bootverbose)
1810                                 kprintf("%s: %sLow byte termination Enabled\n",
1811                                        ahc_name(ahc),
1812                                        (ahc->features & AHC_ULTRA2) ? "Primary "
1813                                                                     : "");
1814                 }
1815
1816                 if ((adapter_control & CFWSTERM) != 0
1817                  && (ahc->features & AHC_WIDE) != 0) {
1818                         brddat |= BRDDAT6;
1819                         if (bootverbose)
1820                                 kprintf("%s: %sHigh byte termination Enabled\n",
1821                                        ahc_name(ahc),
1822                                        (ahc->features & AHC_ULTRA2)
1823                                      ? "Secondary " : "");
1824                 }
1825
1826                 /*
1827                  * Setup STPWEN before setting up the rest of
1828                  * the termination per the tech note on the U160 cards.
1829                  */
1830                 ahc_outb(ahc, SXFRCTL1, *sxfrctl1);
1831
1832                 if ((ahc->features & AHC_WIDE) != 0)
1833                         write_brdctl(ahc, brddat);
1834         }
1835         SEEPROM_OUTB(sd, sd->sd_MS); /* Clear CS */
1836 }
1837
1838 static void
1839 ahc_new_term_detect(struct ahc_softc *ahc, int *enableSEC_low,
1840                     int *enableSEC_high, int *enablePRI_low,
1841                     int *enablePRI_high, int *eeprom_present)
1842 {
1843         uint8_t brdctl;
1844
1845         /*
1846          * BRDDAT7 = Eeprom
1847          * BRDDAT6 = Enable Secondary High Byte termination
1848          * BRDDAT5 = Enable Secondary Low Byte termination
1849          * BRDDAT4 = Enable Primary high byte termination
1850          * BRDDAT3 = Enable Primary low byte termination
1851          */
1852         brdctl = read_brdctl(ahc);
1853         *eeprom_present = brdctl & BRDDAT7;
1854         *enableSEC_high = (brdctl & BRDDAT6);
1855         *enableSEC_low = (brdctl & BRDDAT5);
1856         *enablePRI_high = (brdctl & BRDDAT4);
1857         *enablePRI_low = (brdctl & BRDDAT3);
1858 }
1859
1860 static void
1861 aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1862                      int *internal68_present, int *externalcable_present,
1863                      int *eeprom_present)
1864 {
1865         uint8_t brdctl;
1866
1867         /*
1868          * First read the status of our cables.
1869          * Set the rom bank to 0 since the
1870          * bank setting serves as a multiplexor
1871          * for the cable detection logic.
1872          * BRDDAT5 controls the bank switch.
1873          */
1874         write_brdctl(ahc, 0);
1875
1876         /*
1877          * Now read the state of the internal
1878          * connectors.  BRDDAT6 is INT50 and
1879          * BRDDAT7 is INT68.
1880          */
1881         brdctl = read_brdctl(ahc);
1882         *internal50_present = (brdctl & BRDDAT6) ? 0 : 1;
1883         *internal68_present = (brdctl & BRDDAT7) ? 0 : 1;
1884
1885         /*
1886          * Set the rom bank to 1 and determine
1887          * the other signals.
1888          */
1889         write_brdctl(ahc, BRDDAT5);
1890
1891         /*
1892          * Now read the state of the external
1893          * connectors.  BRDDAT6 is EXT68 and
1894          * BRDDAT7 is EPROMPS.
1895          */
1896         brdctl = read_brdctl(ahc);
1897         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1898         *eeprom_present = (brdctl & BRDDAT7) ? 1 : 0;
1899 }
1900
1901 static void
1902 aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
1903                      int *externalcable_present, int *eeprom_present)
1904 {
1905         uint8_t brdctl;
1906         uint8_t spiocap;
1907
1908         spiocap = ahc_inb(ahc, SPIOCAP);
1909         spiocap &= ~SOFTCMDEN;
1910         spiocap |= EXT_BRDCTL;
1911         ahc_outb(ahc, SPIOCAP, spiocap);
1912         ahc_outb(ahc, BRDCTL, BRDRW|BRDCS);
1913         ahc_flush_device_writes(ahc);
1914         aic_delay(500);
1915         ahc_outb(ahc, BRDCTL, 0);
1916         ahc_flush_device_writes(ahc);
1917         aic_delay(500);
1918         brdctl = ahc_inb(ahc, BRDCTL);
1919         *internal50_present = (brdctl & BRDDAT5) ? 0 : 1;
1920         *externalcable_present = (brdctl & BRDDAT6) ? 0 : 1;
1921         *eeprom_present = (ahc_inb(ahc, SPIOCAP) & EEPROM) ? 1 : 0;
1922 }
1923         
1924 int
1925 ahc_acquire_seeprom(struct ahc_softc *ahc, struct seeprom_descriptor *sd)
1926 {
1927         int wait;
1928
1929         if ((ahc->features & AHC_SPIOCAP) != 0
1930          && (ahc_inb(ahc, SPIOCAP) & SEEPROM) == 0)
1931                 return (0);
1932
1933         /*
1934          * Request access of the memory port.  When access is
1935          * granted, SEERDY will go high.  We use a 1 second
1936          * timeout which should be near 1 second more than
1937          * is needed.  Reason: after the chip reset, there
1938          * should be no contention.
1939          */
1940         SEEPROM_OUTB(sd, sd->sd_MS);
1941         wait = 1000;  /* 1 second timeout in msec */
1942         while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
1943                 aic_delay(1000);  /* delay 1 msec */
1944         }
1945         if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
1946                 SEEPROM_OUTB(sd, 0); 
1947                 return (0);
1948         }
1949         return(1);
1950 }
1951
1952 void
1953 ahc_release_seeprom(struct seeprom_descriptor *sd)
1954 {
1955         /* Release access to the memory port and the serial EEPROM. */
1956         SEEPROM_OUTB(sd, 0);
1957 }
1958
1959 static void
1960 write_brdctl(struct ahc_softc *ahc, uint8_t value)
1961 {
1962         uint8_t brdctl;
1963
1964         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1965                 brdctl = BRDSTB;
1966                 if (ahc->channel == 'B')
1967                         brdctl |= BRDCS;
1968         } else if ((ahc->features & AHC_ULTRA2) != 0) {
1969                 brdctl = 0;
1970         } else {
1971                 brdctl = BRDSTB|BRDCS;
1972         }
1973         ahc_outb(ahc, BRDCTL, brdctl);
1974         ahc_flush_device_writes(ahc);
1975         brdctl |= value;
1976         ahc_outb(ahc, BRDCTL, brdctl);
1977         ahc_flush_device_writes(ahc);
1978         if ((ahc->features & AHC_ULTRA2) != 0)
1979                 brdctl |= BRDSTB_ULTRA2;
1980         else
1981                 brdctl &= ~BRDSTB;
1982         ahc_outb(ahc, BRDCTL, brdctl);
1983         ahc_flush_device_writes(ahc);
1984         if ((ahc->features & AHC_ULTRA2) != 0)
1985                 brdctl = 0;
1986         else
1987                 brdctl &= ~BRDCS;
1988         ahc_outb(ahc, BRDCTL, brdctl);
1989 }
1990
1991 static uint8_t
1992 read_brdctl(struct ahc_softc *ahc)
1993 {
1994         uint8_t brdctl;
1995         uint8_t value;
1996
1997         if ((ahc->chip & AHC_CHIPID_MASK) == AHC_AIC7895) {
1998                 brdctl = BRDRW;
1999                 if (ahc->channel == 'B')
2000                         brdctl |= BRDCS;
2001         } else if ((ahc->features & AHC_ULTRA2) != 0) {
2002                 brdctl = BRDRW_ULTRA2;
2003         } else {
2004                 brdctl = BRDRW|BRDCS;
2005         }
2006         ahc_outb(ahc, BRDCTL, brdctl);
2007         ahc_flush_device_writes(ahc);
2008         value = ahc_inb(ahc, BRDCTL);
2009         ahc_outb(ahc, BRDCTL, 0);
2010         return (value);
2011 }
2012
2013 static void
2014 ahc_pci_intr(struct ahc_softc *ahc)
2015 {
2016         u_int error;
2017         u_int status1;
2018
2019         error = ahc_inb(ahc, ERROR);
2020         if ((error & PCIERRSTAT) == 0)
2021                 return;
2022
2023         status1 = aic_pci_read_config(ahc->dev_softc,
2024                                       PCIR_STATUS + 1, /*bytes*/1);
2025
2026         if ((status1 & ~DPE) != 0
2027          || (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2028                 kprintf("%s: PCI error Interrupt at seqaddr = 0x%x\n",
2029                        ahc_name(ahc),
2030                        ahc_inb(ahc, SEQADDR0) | (ahc_inb(ahc, SEQADDR1) << 8));
2031         }
2032
2033         if (status1 & DPE
2034          && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2035                 ahc->pci_target_perr_count++;
2036                 kprintf("%s: Data Parity Error Detected during address "
2037                        "or write data phase\n", ahc_name(ahc));
2038         }
2039         if (status1 & SSE) {
2040                 kprintf("%s: Signal System Error Detected\n", ahc_name(ahc));
2041         }
2042         if (status1 & RMA) {
2043                 kprintf("%s: Received a Master Abort\n", ahc_name(ahc));
2044         }
2045         if (status1 & RTA) {
2046                 kprintf("%s: Received a Target Abort\n", ahc_name(ahc));
2047         }
2048         if (status1 & STA) {
2049                 kprintf("%s: Signaled a Target Abort\n", ahc_name(ahc));
2050         }
2051         if (status1 & DPR) {
2052                 kprintf("%s: Data Parity Error has been reported via PERR#\n",
2053                        ahc_name(ahc));
2054         }
2055
2056         /* Clear latched errors. */
2057         aic_pci_write_config(ahc->dev_softc, PCIR_STATUS + 1,
2058                              status1, /*bytes*/1);
2059
2060         if ((status1 & (DPE|SSE|RMA|RTA|STA|DPR)) == 0) {
2061                 kprintf("%s: Latched PCIERR interrupt with "
2062                        "no status bits set\n", ahc_name(ahc)); 
2063         } else {
2064                 ahc_outb(ahc, CLRINT, CLRPARERR);
2065         }
2066
2067         if (ahc->pci_target_perr_count > AHC_PCI_TARGET_PERR_THRESH
2068          && (ahc->flags & AHC_DISABLE_PCI_PERR) == 0) {
2069                 kprintf(
2070 "%s: WARNING WARNING WARNING WARNING\n"
2071 "%s: Too many PCI parity errors observed as a target.\n"
2072 "%s: Some device on this PCI bus is generating bad parity.\n"
2073 "%s: This is an error *observed by*, not *generated by*, %s.\n"
2074 "%s: PCI parity error checking has been disabled.\n"
2075 "%s: WARNING WARNING WARNING WARNING\n",
2076                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2077                        ahc_name(ahc), ahc_name(ahc), ahc_name(ahc),
2078                        ahc_name(ahc));
2079                 ahc->seqctl |= FAILDIS;
2080                 ahc->flags |= AHC_DISABLE_PCI_PERR;
2081                 ahc_outb(ahc, SEQCTL, ahc->seqctl);
2082         }
2083         ahc_unpause(ahc);
2084 }
2085
2086 static int
2087 ahc_pci_chip_init(struct ahc_softc *ahc)
2088 {
2089         ahc_outb(ahc, DSCOMMAND0, ahc->bus_softc.pci_softc.dscommand0);
2090         ahc_outb(ahc, DSPCISTATUS, ahc->bus_softc.pci_softc.dspcistatus);
2091         if ((ahc->features & AHC_DT) != 0) {
2092                 u_int sfunct;
2093
2094                 sfunct = ahc_inb(ahc, SFUNCT) & ~ALT_MODE;
2095                 ahc_outb(ahc, SFUNCT, sfunct | ALT_MODE);
2096                 ahc_outb(ahc, OPTIONMODE, ahc->bus_softc.pci_softc.optionmode);
2097                 ahc_outw(ahc, TARGCRCCNT, ahc->bus_softc.pci_softc.targcrccnt);
2098                 ahc_outb(ahc, SFUNCT, sfunct);
2099                 ahc_outb(ahc, CRCCONTROL1,
2100                          ahc->bus_softc.pci_softc.crccontrol1);
2101         }
2102         if ((ahc->features & AHC_MULTI_FUNC) != 0)
2103                 ahc_outb(ahc, SCBBADDR, ahc->bus_softc.pci_softc.scbbaddr);
2104
2105         if ((ahc->features & AHC_ULTRA2) != 0)
2106                 ahc_outb(ahc, DFF_THRSH, ahc->bus_softc.pci_softc.dff_thrsh);
2107
2108         return (ahc_chip_init(ahc));
2109 }
2110
2111 static int
2112 ahc_pci_suspend(struct ahc_softc *ahc)
2113 {
2114         return (ahc_suspend(ahc));
2115 }
2116
2117 static int
2118 ahc_pci_resume(struct ahc_softc *ahc)
2119 {
2120
2121         aic_power_state_change(ahc, AIC_POWER_STATE_D0);
2122
2123         /*
2124          * We assume that the OS has restored our register
2125          * mappings, etc.  Just update the config space registers
2126          * that the OS doesn't know about and rely on our chip
2127          * reset handler to handle the rest.
2128          */
2129         aic_pci_write_config(ahc->dev_softc, DEVCONFIG,
2130                              ahc->bus_softc.pci_softc.devconfig, /*bytes*/4);
2131         aic_pci_write_config(ahc->dev_softc, PCIR_COMMAND,
2132                              ahc->bus_softc.pci_softc.command, /*bytes*/1);
2133         aic_pci_write_config(ahc->dev_softc, CSIZE_LATTIME,
2134                              ahc->bus_softc.pci_softc.csize_lattime,
2135                              /*bytes*/1);
2136         if ((ahc->flags & AHC_HAS_TERM_LOGIC) != 0) {
2137                 struct  seeprom_descriptor sd;
2138                 u_int   sxfrctl1;
2139
2140                 sd.sd_ahc = ahc;
2141                 sd.sd_control_offset = SEECTL;          
2142                 sd.sd_status_offset = SEECTL;           
2143                 sd.sd_dataout_offset = SEECTL;          
2144
2145                 ahc_acquire_seeprom(ahc, &sd);
2146                 configure_termination(ahc, &sd,
2147                                       ahc->seep_config->adapter_control,
2148                                       &sxfrctl1);
2149                 ahc_release_seeprom(&sd);
2150         }
2151         return (ahc_resume(ahc));
2152 }
2153
2154 static int
2155 ahc_aic785X_setup(struct ahc_softc *ahc)
2156 {
2157         aic_dev_softc_t pci;
2158         uint8_t rev;
2159
2160         pci = ahc->dev_softc;
2161         ahc->channel = 'A';
2162         ahc->chip = AHC_AIC7850;
2163         ahc->features = AHC_AIC7850_FE;
2164         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2165         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2166         if (rev >= 1)
2167                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2168         ahc->instruction_ram_size = 512;
2169         return (0);
2170 }
2171
2172 static int
2173 ahc_aic7860_setup(struct ahc_softc *ahc)
2174 {
2175         aic_dev_softc_t pci;
2176         uint8_t rev;
2177
2178         pci = ahc->dev_softc;
2179         ahc->channel = 'A';
2180         ahc->chip = AHC_AIC7860;
2181         ahc->features = AHC_AIC7860_FE;
2182         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2183         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2184         if (rev >= 1)
2185                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2186         ahc->instruction_ram_size = 512;
2187         return (0);
2188 }
2189
2190 static int
2191 ahc_apa1480_setup(struct ahc_softc *ahc)
2192 {
2193         int error;
2194
2195         error = ahc_aic7860_setup(ahc);
2196         if (error != 0)
2197                 return (error);
2198         ahc->features |= AHC_REMOVABLE;
2199         return (0);
2200 }
2201
2202 static int
2203 ahc_aic7870_setup(struct ahc_softc *ahc)
2204 {
2205
2206         ahc->channel = 'A';
2207         ahc->chip = AHC_AIC7870;
2208         ahc->features = AHC_AIC7870_FE;
2209         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2210         ahc->instruction_ram_size = 512;
2211         return (0);
2212 }
2213
2214 static int
2215 ahc_aha394X_setup(struct ahc_softc *ahc)
2216 {
2217         int error;
2218
2219         error = ahc_aic7870_setup(ahc);
2220         if (error == 0)
2221                 error = ahc_aha394XX_setup(ahc);
2222         return (error);
2223 }
2224
2225 static int
2226 ahc_aha398X_setup(struct ahc_softc *ahc)
2227 {
2228         int error;
2229
2230         error = ahc_aic7870_setup(ahc);
2231         if (error == 0)
2232                 error = ahc_aha398XX_setup(ahc);
2233         return (error);
2234 }
2235
2236 static int
2237 ahc_aha494X_setup(struct ahc_softc *ahc)
2238 {
2239         int error;
2240
2241         error = ahc_aic7870_setup(ahc);
2242         if (error == 0)
2243                 error = ahc_aha494XX_setup(ahc);
2244         return (error);
2245 }
2246
2247 static int
2248 ahc_aic7880_setup(struct ahc_softc *ahc)
2249 {
2250         aic_dev_softc_t pci;
2251         uint8_t rev;
2252
2253         pci = ahc->dev_softc;
2254         ahc->channel = 'A';
2255         ahc->chip = AHC_AIC7880;
2256         ahc->features = AHC_AIC7880_FE;
2257         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
2258         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2259         if (rev >= 1) {
2260                 ahc->bugs |= AHC_PCI_2_1_RETRY_BUG;
2261         } else {
2262                 ahc->bugs |= AHC_CACHETHEN_BUG|AHC_PCI_MWI_BUG;
2263         }
2264         ahc->instruction_ram_size = 512;
2265         return (0);
2266 }
2267
2268 static int
2269 ahc_aha2940Pro_setup(struct ahc_softc *ahc)
2270 {
2271
2272         ahc->flags |= AHC_INT50_SPEEDFLEX;
2273         return (ahc_aic7880_setup(ahc));
2274 }
2275
2276 static int
2277 ahc_aha394XU_setup(struct ahc_softc *ahc)
2278 {
2279         int error;
2280
2281         error = ahc_aic7880_setup(ahc);
2282         if (error == 0)
2283                 error = ahc_aha394XX_setup(ahc);
2284         return (error);
2285 }
2286
2287 static int
2288 ahc_aha398XU_setup(struct ahc_softc *ahc)
2289 {
2290         int error;
2291
2292         error = ahc_aic7880_setup(ahc);
2293         if (error == 0)
2294                 error = ahc_aha398XX_setup(ahc);
2295         return (error);
2296 }
2297
2298 static int
2299 ahc_aic7890_setup(struct ahc_softc *ahc)
2300 {
2301         aic_dev_softc_t pci;
2302         uint8_t rev;
2303
2304         pci = ahc->dev_softc;
2305         ahc->channel = 'A';
2306         ahc->chip = AHC_AIC7890;
2307         ahc->features = AHC_AIC7890_FE;
2308         ahc->flags |= AHC_NEWEEPROM_FMT;
2309         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2310         if (rev == 0)
2311                 ahc->bugs |= AHC_AUTOFLUSH_BUG|AHC_CACHETHEN_BUG;
2312         ahc->instruction_ram_size = 768;
2313         return (0);
2314 }
2315
2316 static int
2317 ahc_aic7892_setup(struct ahc_softc *ahc)
2318 {
2319
2320         ahc->channel = 'A';
2321         ahc->chip = AHC_AIC7892;
2322         ahc->features = AHC_AIC7892_FE;
2323         ahc->flags |= AHC_NEWEEPROM_FMT;
2324         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2325         ahc->instruction_ram_size = 1024;
2326         return (0);
2327 }
2328
2329 static int
2330 ahc_aic7895_setup(struct ahc_softc *ahc)
2331 {
2332         aic_dev_softc_t pci;
2333         uint8_t rev;
2334
2335         pci = ahc->dev_softc;
2336         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2337         /*
2338          * The 'C' revision of the aic7895 has a few additional features.
2339          */
2340         rev = aic_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
2341         if (rev >= 4) {
2342                 ahc->chip = AHC_AIC7895C;
2343                 ahc->features = AHC_AIC7895C_FE;
2344         } else  {
2345                 u_int command;
2346
2347                 ahc->chip = AHC_AIC7895;
2348                 ahc->features = AHC_AIC7895_FE;
2349
2350                 /*
2351                  * The BIOS disables the use of MWI transactions
2352                  * since it does not have the MWI bug work around
2353                  * we have.  Disabling MWI reduces performance, so
2354                  * turn it on again.
2355                  */
2356                 command = aic_pci_read_config(pci, PCIR_COMMAND, /*bytes*/1);
2357                 command |= PCIM_CMD_MWRICEN;
2358                 aic_pci_write_config(pci, PCIR_COMMAND, command, /*bytes*/1);
2359                 ahc->bugs |= AHC_PCI_MWI_BUG;
2360         }
2361         /*
2362          * XXX Does CACHETHEN really not work???  What about PCI retry?
2363          * on C level chips.  Need to test, but for now, play it safe.
2364          */
2365         ahc->bugs |= AHC_TMODE_WIDEODD_BUG|AHC_PCI_2_1_RETRY_BUG
2366                   |  AHC_CACHETHEN_BUG;
2367
2368 #if 0
2369         uint32_t devconfig;
2370
2371         /*
2372          * Cachesize must also be zero due to stray DAC
2373          * problem when sitting behind some bridges.
2374          */
2375         aic_pci_write_config(pci, CSIZE_LATTIME, 0, /*bytes*/1);
2376         devconfig = aic_pci_read_config(pci, DEVCONFIG, /*bytes*/1);
2377         devconfig |= MRDCEN;
2378         aic_pci_write_config(pci, DEVCONFIG, devconfig, /*bytes*/1);
2379 #endif
2380         ahc->flags |= AHC_NEWEEPROM_FMT;
2381         ahc->instruction_ram_size = 512;
2382         return (0);
2383 }
2384
2385 static int
2386 ahc_aic7896_setup(struct ahc_softc *ahc)
2387 {
2388         aic_dev_softc_t pci;
2389
2390         pci = ahc->dev_softc;
2391         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2392         ahc->chip = AHC_AIC7896;
2393         ahc->features = AHC_AIC7896_FE;
2394         ahc->flags |= AHC_NEWEEPROM_FMT;
2395         ahc->bugs |= AHC_CACHETHEN_DIS_BUG;
2396         ahc->instruction_ram_size = 768;
2397         return (0);
2398 }
2399
2400 static int
2401 ahc_aic7899_setup(struct ahc_softc *ahc)
2402 {
2403         aic_dev_softc_t pci;
2404
2405         pci = ahc->dev_softc;
2406         ahc->channel = aic_get_pci_function(pci) == 1 ? 'B' : 'A';
2407         ahc->chip = AHC_AIC7899;
2408         ahc->features = AHC_AIC7899_FE;
2409         ahc->flags |= AHC_NEWEEPROM_FMT;
2410         ahc->bugs |= AHC_SCBCHAN_UPLOAD_BUG;
2411         ahc->instruction_ram_size = 1024;
2412         return (0);
2413 }
2414
2415 static int
2416 ahc_aha29160C_setup(struct ahc_softc *ahc)
2417 {
2418         int error;
2419
2420         error = ahc_aic7899_setup(ahc);
2421         if (error != 0)
2422                 return (error);
2423         ahc->features |= AHC_REMOVABLE;
2424         return (0);
2425 }
2426
2427 static int
2428 ahc_raid_setup(struct ahc_softc *ahc)
2429 {
2430         kprintf("RAID functionality unsupported\n");
2431         return (ENXIO);
2432 }
2433
2434 static int
2435 ahc_aha394XX_setup(struct ahc_softc *ahc)
2436 {
2437         aic_dev_softc_t pci;
2438
2439         pci = ahc->dev_softc;
2440         switch (aic_get_pci_slot(pci)) {
2441         case AHC_394X_SLOT_CHANNEL_A:
2442                 ahc->channel = 'A';
2443                 break;
2444         case AHC_394X_SLOT_CHANNEL_B:
2445                 ahc->channel = 'B';
2446                 break;
2447         default:
2448                 kprintf("adapter at unexpected slot %d\n"
2449                        "unable to map to a channel\n",
2450                        aic_get_pci_slot(pci));
2451                 ahc->channel = 'A';
2452         }
2453         return (0);
2454 }
2455
2456 static int
2457 ahc_aha398XX_setup(struct ahc_softc *ahc)
2458 {
2459         aic_dev_softc_t pci;
2460
2461         pci = ahc->dev_softc;
2462         switch (aic_get_pci_slot(pci)) {
2463         case AHC_398X_SLOT_CHANNEL_A:
2464                 ahc->channel = 'A';
2465                 break;
2466         case AHC_398X_SLOT_CHANNEL_B:
2467                 ahc->channel = 'B';
2468                 break;
2469         case AHC_398X_SLOT_CHANNEL_C:
2470                 ahc->channel = 'C';
2471                 break;
2472         default:
2473                 kprintf("adapter at unexpected slot %d\n"
2474                        "unable to map to a channel\n",
2475                        aic_get_pci_slot(pci));
2476                 ahc->channel = 'A';
2477                 break;
2478         }
2479         ahc->flags |= AHC_LARGE_SEEPROM;
2480         return (0);
2481 }
2482
2483 static int
2484 ahc_aha494XX_setup(struct ahc_softc *ahc)
2485 {
2486         aic_dev_softc_t pci;
2487
2488         pci = ahc->dev_softc;
2489         switch (aic_get_pci_slot(pci)) {
2490         case AHC_494X_SLOT_CHANNEL_A:
2491                 ahc->channel = 'A';
2492                 break;
2493         case AHC_494X_SLOT_CHANNEL_B:
2494                 ahc->channel = 'B';
2495                 break;
2496         case AHC_494X_SLOT_CHANNEL_C:
2497                 ahc->channel = 'C';
2498                 break;
2499         case AHC_494X_SLOT_CHANNEL_D:
2500                 ahc->channel = 'D';
2501                 break;
2502         default:
2503                 kprintf("adapter at unexpected slot %d\n"
2504                        "unable to map to a channel\n",
2505                        aic_get_pci_slot(pci));
2506                 ahc->channel = 'A';
2507         }
2508         ahc->flags |= AHC_LARGE_SEEPROM;
2509         return (0);
2510 }