xref: /dragonfly/sys/dev/raid/aac/aac_pci.c (revision 92fc8b5c)
1 /*-
2  * Copyright (c) 2000 Michael Smith
3  * Copyright (c) 2001 Scott Long
4  * Copyright (c) 2000 BSDi
5  * Copyright (c) 2001 Adaptec, Inc.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD: src/sys/dev/aac/aac_pci.c,v 1.74 2010/04/13 01:16:15 emaste Exp $
30  */
31 
32 /*
33  * PCI bus interface and resource allocation.
34  */
35 
36 #include "opt_aac.h"
37 
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 
43 #include <sys/bio.h>
44 #include <sys/bus.h>
45 #include <sys/conf.h>
46 #include <sys/disk.h>
47 
48 #include <sys/rman.h>
49 
50 #include <bus/pci/pcireg.h>
51 #include <bus/pci/pcivar.h>
52 
53 #include <dev/raid/aac/aacreg.h>
54 #include <dev/raid/aac/aac_ioctl.h>
55 #include <dev/raid/aac/aacvar.h>
56 
57 static int	aac_pci_probe(device_t dev);
58 static int	aac_pci_attach(device_t dev);
59 
60 static device_method_t aac_methods[] = {
61 	/* Device interface */
62 	DEVMETHOD(device_probe,		aac_pci_probe),
63 	DEVMETHOD(device_attach,	aac_pci_attach),
64 	DEVMETHOD(device_detach,	aac_detach),
65 	DEVMETHOD(device_suspend,	aac_suspend),
66 	DEVMETHOD(device_resume,	aac_resume),
67 
68 	DEVMETHOD(bus_print_child,	bus_generic_print_child),
69 	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
70 	{ 0, 0 }
71 };
72 
73 static driver_t aac_pci_driver = {
74 	"aac",
75 	aac_methods,
76 	sizeof(struct aac_softc)
77 };
78 
79 static devclass_t	aac_devclass;
80 
81 DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, 0, 0);
82 MODULE_DEPEND(aac, pci, 1, 1, 1);
83 
84 
85 struct aac_ident
86 {
87 	u_int16_t		vendor;
88 	u_int16_t		device;
89 	u_int16_t		subvendor;
90 	u_int16_t		subdevice;
91 	int			hwif;
92 	int			quirks;
93 	char			*desc;
94 } aac_identifiers[] = {
95 	{0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
96 	"Dell PERC 2/Si"},
97 	{0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
98 	"Dell PERC 3/Di"},
99 	{0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
100 	"Dell PERC 3/Si"},
101 	{0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
102 	"Dell PERC 3/Si"},
103 	{0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
104 	"Dell PERC 3/Di"},
105 	{0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
106 	"Dell PERC 3/Di"},
107 	{0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
108 	"Dell PERC 3/Di"},
109 	{0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
110 	"Dell PERC 3/Di"},
111 	{0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
112 	"Dell PERC 3/Di"},
113 	{0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
114 	"Adaptec AAC-364"},
115 	{0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
116 	 AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
117 	{0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
118 	 "Dell PERC 2/QC"},
119 	{0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
120 	 "HP NetRaid-4M"},
121 	{0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
122 	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
123 	{0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
124 	 AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
125 	{0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
126 	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
127 	{0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
128 	 "Adaptec SATA RAID 2410SA"},
129 	{0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
130 	 "Dell CERC SATA RAID 2"},
131 	{0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
132 	 "Adaptec SATA RAID 2810SA"},
133 	{0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
134 	 "Adaptec SATA RAID 21610SA"},
135 	{0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
136 	 "HP ML110 G2 (Adaptec 2610SA)"},
137 	{0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, 0,
138 	 "Adaptec SCSI RAID 2230S"},
139 	{0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
140 	 "Adaptec SCSI RAID 2130S"},
141 
142 	{0x9005, 0x0285, 0x9005, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
143 	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
144 	{0x9005, 0x0285, 0x17aa, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
145 	 AAC_FLAGS_256FIBS, "Legend S220"},
146 	{0x9005, 0x0285, 0x17aa, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
147 	 AAC_FLAGS_256FIBS, "Legend S230"},
148 	{0x9005, 0x0285, 0x9005, 0x0288, AAC_HWIF_I960RX, 0,
149 	 "Adaptec SCSI RAID 3230S"},
150 	{0x9005, 0x0285, 0x9005, 0x0289, AAC_HWIF_I960RX, 0,
151 	 "Adaptec SCSI RAID 3240S"},
152 	{0x9005, 0x0285, 0x9005, 0x028a, AAC_HWIF_I960RX, 0,
153 	 "Adaptec SCSI RAID 2020ZCR"},
154 	{0x9005, 0x0285, 0x9005, 0x028b, AAC_HWIF_I960RX, 0,
155 	 "Adaptec SCSI RAID 2025ZCR"},
156 	{0x9005, 0x0286, 0x9005, 0x029b, AAC_HWIF_RKT, 0,
157 	 "Adaptec SATA RAID 2820SA"},
158 	{0x9005, 0x0286, 0x9005, 0x029c, AAC_HWIF_RKT, 0,
159 	 "Adaptec SATA RAID 2620SA"},
160 	{0x9005, 0x0286, 0x9005, 0x029d, AAC_HWIF_RKT, 0,
161 	 "Adaptec SATA RAID 2420SA"},
162 	{0x9005, 0x0286, 0x9005, 0x029e, AAC_HWIF_RKT, 0,
163 	 "ICP ICP9024RO SCSI RAID"},
164 	{0x9005, 0x0286, 0x9005, 0x029f, AAC_HWIF_RKT, 0,
165 	 "ICP ICP9014RO SCSI RAID"},
166 	{0x9005, 0x0285, 0x9005, 0x0294, AAC_HWIF_I960RX, 0,
167 	 "Adaptec SATA RAID 2026ZCR"},
168 	{0x9005, 0x0285, 0x9005, 0x0296, AAC_HWIF_I960RX, 0,
169 	 "Adaptec SCSI RAID 2240S"},
170 	{0x9005, 0x0285, 0x9005, 0x0297, AAC_HWIF_I960RX, 0,
171 	 "Adaptec SAS RAID 4005SAS"},
172 	{0x9005, 0x0285, 0x1014, 0x02f2, AAC_HWIF_I960RX, 0,
173 	 "IBM ServeRAID 8i"},
174 	{0x9005, 0x0285, 0x1014, 0x0312, AAC_HWIF_I960RX, 0,
175 	 "IBM ServeRAID 8i"},
176 	{0x9005, 0x0285, 0x9005, 0x0298, AAC_HWIF_I960RX, 0,
177 	 "Adaptec RAID 4000"},
178 	{0x9005, 0x0285, 0x9005, 0x0299, AAC_HWIF_I960RX, 0,
179 	 "Adaptec SAS RAID 4800SAS"},
180 	{0x9005, 0x0285, 0x9005, 0x029a, AAC_HWIF_I960RX, 0,
181 	 "Adaptec SAS RAID 4805SAS"},
182 	{0x9005, 0x0285, 0x9005, 0x028e, AAC_HWIF_I960RX, 0,
183 	 "Adaptec SATA RAID 2020SA ZCR"},
184 	{0x9005, 0x0285, 0x9005, 0x028f, AAC_HWIF_I960RX, 0,
185 	 "Adaptec SATA RAID 2025SA ZCR"},
186 	{0x9005, 0x0285, 0x9005, 0x02a4, AAC_HWIF_I960RX, 0,
187 	 "ICP ICP9085LI SAS RAID"},
188 	{0x9005, 0x0285, 0x9005, 0x02a5, AAC_HWIF_I960RX, 0,
189 	 "ICP ICP5085BR SAS RAID"},
190 	{0x9005, 0x0286, 0x9005, 0x02a0, AAC_HWIF_RKT, 0,
191 	 "ICP ICP9047MA SATA RAID"},
192 	{0x9005, 0x0286, 0x9005, 0x02a1, AAC_HWIF_RKT, 0,
193 	 "ICP ICP9087MA SATA RAID"},
194 	{0x9005, 0x0286, 0x9005, 0x02a6, AAC_HWIF_RKT, 0,
195 	 "ICP9067MA SATA RAID"},
196 	{0x9005, 0x0285, 0x9005, 0x02b5, AAC_HWIF_I960RX, 0,
197 	 "Adaptec RAID 5445"},
198 	{0x9005, 0x0285, 0x9005, 0x02b6, AAC_HWIF_I960RX, 0,
199 	 "Adaptec RAID 5805"},
200 	{0x9005, 0x0285, 0x9005, 0x02b7, AAC_HWIF_I960RX, 0,
201 	 "Adaptec RAID 5085"},
202 	{0x9005, 0x0285, 0x9005, 0x02b8, AAC_HWIF_I960RX, 0,
203 	 "ICP RAID ICP5445SL"},
204 	{0x9005, 0x0285, 0x9005, 0x02b9, AAC_HWIF_I960RX, 0,
205 	 "ICP RAID ICP5085SL"},
206 	{0x9005, 0x0285, 0x9005, 0x02ba, AAC_HWIF_I960RX, 0,
207 	 "ICP RAID ICP5805SL"},
208 	{0x9005, 0x0285, 0x9005, 0x02bb, AAC_HWIF_I960RX, 0,
209 	 "Adaptec RAID 3405"},
210 	{0x9005, 0x0285, 0x9005, 0x02bc, AAC_HWIF_I960RX, 0,
211 	 "Adaptec RAID 3805"},
212 	{0x9005, 0x0285, 0x9005, 0x02bd, AAC_HWIF_I960RX, 0,
213 	 "Adaptec RAID 31205"},
214 	{0x9005, 0x0285, 0x9005, 0x02be, AAC_HWIF_I960RX, 0,
215 	 "Adaptec RAID 31605"},
216 	{0x9005, 0x0285, 0x9005, 0x02bf, AAC_HWIF_I960RX, 0,
217 	 "ICP RAID ICP5045BL"},
218 	{0x9005, 0x0285, 0x9005, 0x02c0, AAC_HWIF_I960RX, 0,
219 	 "ICP RAID ICP5085BL"},
220 	{0x9005, 0x0285, 0x9005, 0x02c1, AAC_HWIF_I960RX, 0,
221 	 "ICP RAID ICP5125BR"},
222 	{0x9005, 0x0285, 0x9005, 0x02c2, AAC_HWIF_I960RX, 0,
223 	 "ICP RAID ICP5165BR"},
224 	{0x9005, 0x0285, 0x9005, 0x02c3, AAC_HWIF_I960RX, 0,
225 	 "Adaptec RAID 51205"},
226 	{0x9005, 0x0285, 0x9005, 0x02c4, AAC_HWIF_I960RX, 0,
227 	 "Adaptec RAID 51605"},
228 	{0x9005, 0x0285, 0x9005, 0x02c5, AAC_HWIF_I960RX, 0,
229 	 "ICP RAID ICP5125SL"},
230 	{0x9005, 0x0285, 0x9005, 0x02c6, AAC_HWIF_I960RX, 0,
231 	 "ICP RAID ICP5165SL"},
232 	{0x9005, 0x0285, 0x9005, 0x02c7, AAC_HWIF_I960RX, 0,
233 	 "Adaptec RAID 3085"},
234 	{0x9005, 0x0285, 0x9005, 0x02c8, AAC_HWIF_I960RX, 0,
235 	 "ICP RAID ICP5805BL"},
236 	{0x9005, 0x0285, 0x9005, 0x02ce, AAC_HWIF_I960RX, 0,
237 	 "Adaptec RAID 51245"},
238 	{0x9005, 0x0285, 0x9005, 0x02cf, AAC_HWIF_I960RX, 0,
239 	 "Adaptec RAID 51645"},
240 	{0x9005, 0x0285, 0x9005, 0x02d0, AAC_HWIF_I960RX, 0,
241 	 "Adaptec RAID 52445"},
242 	{0x9005, 0x0285, 0x9005, 0x02d1, AAC_HWIF_I960RX, 0,
243 	 "Adaptec RAID 5405"},
244 	{0x9005, 0x0285, 0x9005, 0x02d4, AAC_HWIF_I960RX, 0,
245 	 "Adaptec RAID 2045"},
246 	{0x9005, 0x0285, 0x9005, 0x02d5, AAC_HWIF_I960RX, 0,
247 	 "Adaptec RAID 2405"},
248 	{0x9005, 0x0285, 0x9005, 0x02d6, AAC_HWIF_I960RX, 0,
249 	 "Adaptec RAID 2445"},
250 	{0x9005, 0x0285, 0x9005, 0x02d7, AAC_HWIF_I960RX, 0,
251 	 "Adaptec RAID 2805"},
252 	{0x9005, 0x0286, 0x1014, 0x9580, AAC_HWIF_RKT, 0,
253 	 "IBM ServeRAID-8k"},
254 	{0x9005, 0x0285, 0x1014, 0x034d, AAC_HWIF_I960RX, 0,
255 	 "IBM ServeRAID 8s"},
256 	{0x9005, 0x0285, 0x108e, 0x7aac, AAC_HWIF_I960RX, 0,
257 	 "Sun STK RAID REM"},
258 	{0x9005, 0x0285, 0x108e, 0x7aae, AAC_HWIF_I960RX, 0,
259 	 "Sun STK RAID EM"},
260 	{0x9005, 0x0285, 0x108e, 0x286, AAC_HWIF_I960RX, 0,
261 	 "SG-XPCIESAS-R-IN"},
262 	{0x9005, 0x0285, 0x108e, 0x287, AAC_HWIF_I960RX, 0,
263 	 "SG-XPCIESAS-R-EX"},
264 	{0x9005, 0x0285, 0x15d9, 0x2b5, AAC_HWIF_I960RX, 0,
265 	 "AOC-USAS-S4i"},
266 	{0x9005, 0x0285, 0x15d9, 0x2b6, AAC_HWIF_I960RX, 0,
267 	 "AOC-USAS-S8i"},
268 	{0x9005, 0x0285, 0x15d9, 0x2c9, AAC_HWIF_I960RX, 0,
269 	 "AOC-USAS-S4iR"},
270 	{0x9005, 0x0285, 0x15d9, 0x2ca, AAC_HWIF_I960RX, 0,
271 	 "AOC-USAS-S8iR"},
272 	{0x9005, 0x0285, 0x15d9, 0x2d2, AAC_HWIF_I960RX, 0,
273 	 "AOC-USAS-S8i-LP"},
274 	{0x9005, 0x0285, 0x15d9, 0x2d3, AAC_HWIF_I960RX, 0,
275 	 "AOC-USAS-S8iR-LP"},
276 	{0, 0, 0, 0, 0, 0, 0}
277 };
278 struct aac_ident
279 aac_family_identifiers[] = {
280 	{0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
281 	 "Adaptec RAID Controller"},
282 	{0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
283 	 "Adaptec RAID Controller"},
284 	{0, 0, 0, 0, 0, 0, 0}
285 };
286 
287 static struct aac_ident *
288 aac_find_ident(device_t dev)
289 {
290 	struct aac_ident *m;
291 	u_int16_t vendid, devid, sub_vendid, sub_devid;
292 
293 	vendid = pci_get_vendor(dev);
294 	devid = pci_get_device(dev);
295 	sub_vendid = pci_get_subvendor(dev);
296 	sub_devid = pci_get_subdevice(dev);
297 
298 	for (m = aac_identifiers; m->vendor != 0; m++) {
299 		if ((m->vendor == vendid) && (m->device == devid) &&
300 		    (m->subvendor == sub_vendid) &&
301 		    (m->subdevice == sub_devid))
302 			return (m);
303 	}
304 
305 	for (m = aac_family_identifiers; m->vendor != 0; m++) {
306 		if ((m->vendor == vendid) && (m->device == devid))
307 			return (m);
308 	}
309 
310 	return (NULL);
311 }
312 
313 /*
314  * Determine whether this is one of our supported adapters.
315  */
316 static int
317 aac_pci_probe(device_t dev)
318 {
319 	struct aac_ident *id;
320 
321 	fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
322 
323 	if ((id = aac_find_ident(dev)) != NULL) {
324 		device_set_desc(dev, id->desc);
325 		return(BUS_PROBE_DEFAULT);
326 	}
327 	return(ENXIO);
328 }
329 
330 /*
331  * Allocate resources for our device, set up the bus interface.
332  */
333 static int
334 aac_pci_attach(device_t dev)
335 {
336 	struct aac_softc *sc;
337 	struct aac_ident *id;
338 	int error;
339 	u_int32_t command;
340 
341 	fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
342 
343 	/*
344 	 * Initialise softc.
345 	 */
346 	sc = device_get_softc(dev);
347 	bzero(sc, sizeof(*sc));
348 	sc->aac_dev = dev;
349 
350 	/* assume failure is 'not configured' */
351 	error = ENXIO;
352 
353 	/*
354 	 * Verify that the adapter is correctly set up in PCI space.
355 	 */
356 	command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
357 	command |= PCIM_CMD_BUSMASTEREN;
358 	pci_write_config(dev, PCIR_COMMAND, command, 2);
359 	command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
360 	if (!(command & PCIM_CMD_BUSMASTEREN)) {
361 		device_printf(sc->aac_dev, "can't enable bus-master feature\n");
362 		goto out;
363 	}
364 	if ((command & PCIM_CMD_MEMEN) == 0) {
365 		device_printf(sc->aac_dev, "memory window not available\n");
366 		goto out;
367 	}
368 
369 	/*
370 	 * Allocate the PCI register window.
371 	 */
372 	sc->aac_regs_rid0 = PCIR_BAR(0);
373 	if ((sc->aac_regs_res0 = bus_alloc_resource_any(sc->aac_dev,
374 	    SYS_RES_MEMORY, &sc->aac_regs_rid0, RF_ACTIVE)) == NULL) {
375 		device_printf(sc->aac_dev,
376 		    "couldn't allocate register window 0\n");
377 		goto out;
378 	}
379 	sc->aac_btag0 = rman_get_bustag(sc->aac_regs_res0);
380 	sc->aac_bhandle0 = rman_get_bushandle(sc->aac_regs_res0);
381 
382 	if (sc->aac_hwif == AAC_HWIF_NARK) {
383 		sc->aac_regs_rid1 = PCIR_BAR(1);
384 		if ((sc->aac_regs_res1 = bus_alloc_resource_any(sc->aac_dev,
385 		    SYS_RES_MEMORY, &sc->aac_regs_rid1, RF_ACTIVE)) == NULL) {
386 			device_printf(sc->aac_dev,
387 			    "couldn't allocate register window 1\n");
388 			goto out;
389 		}
390 		sc->aac_btag1 = rman_get_bustag(sc->aac_regs_res1);
391 		sc->aac_bhandle1 = rman_get_bushandle(sc->aac_regs_res1);
392 	} else {
393 		sc->aac_regs_res1 = sc->aac_regs_res0;
394 		sc->aac_regs_rid1 = sc->aac_regs_rid0;
395 		sc->aac_btag1 = sc->aac_btag0;
396 		sc->aac_bhandle1 = sc->aac_bhandle0;
397 	}
398 
399 	/*
400 	 * Allocate the parent bus DMA tag appropriate for our PCI interface.
401 	 *
402 	 * Note that some of these controllers are 64-bit capable.
403 	 */
404 	if (bus_dma_tag_create(NULL, 			/* parent */
405 			       PAGE_SIZE, 0,		/* algnmnt, boundary */
406 			       BUS_SPACE_MAXADDR,	/* lowaddr */
407 			       BUS_SPACE_MAXADDR, 	/* highaddr */
408 			       NULL, NULL, 		/* filter, filterarg */
409 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsize */
410 			       BUS_SPACE_UNRESTRICTED,	/* nsegments */
411 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
412 			       0,			/* flags */
413 			       &sc->aac_parent_dmat)) {
414 		device_printf(sc->aac_dev, "can't allocate parent DMA tag\n");
415 		goto out;
416 	}
417 
418 	/*
419 	 * Detect the hardware interface version, set up the bus interface
420 	 * indirection.
421 	 */
422 	id = aac_find_ident(dev);
423 	sc->aac_hwif = id->hwif;
424 	switch(sc->aac_hwif) {
425 	case AAC_HWIF_I960RX:
426 	case AAC_HWIF_NARK:
427 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B, "set hardware up for i960Rx/NARK");
428 		sc->aac_if = aac_rx_interface;
429 		break;
430 	case AAC_HWIF_STRONGARM:
431 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B, "set hardware up for StrongARM");
432 		sc->aac_if = aac_sa_interface;
433 		break;
434 	case AAC_HWIF_RKT:
435 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B, "set hardware up for Rocket/MIPS");
436 		sc->aac_if = aac_rkt_interface;
437 		break;
438 	default:
439 		sc->aac_hwif = AAC_HWIF_UNKNOWN;
440 		device_printf(sc->aac_dev, "unknown hardware type\n");
441 		error = ENXIO;
442 		goto out;
443 	}
444 
445 	/* Set up quirks */
446 	sc->flags = id->quirks;
447 
448 	/*
449 	 * Do bus-independent initialisation.
450 	 */
451 	error = aac_attach(sc);
452 
453 out:
454 	if (error)
455 		aac_free(sc);
456 	return(error);
457 }
458 
459 /*
460  * Do nothing driver that will attach to the SCSI channels of a Dell PERC
461  * controller.  This is needed to keep the power management subsystem from
462  * trying to power down these devices.
463  */
464 static int aacch_probe(device_t dev);
465 static int aacch_attach(device_t dev);
466 static int aacch_detach(device_t dev);
467 
468 static device_method_t aacch_methods[] = {
469 	/* Device interface */
470 	DEVMETHOD(device_probe,		aacch_probe),
471 	DEVMETHOD(device_attach,	aacch_attach),
472 	DEVMETHOD(device_detach,	aacch_detach),
473 	{ 0, 0 }
474 };
475 
476 struct aacch_softc {
477 	device_t	dev;
478 };
479 
480 static driver_t aacch_driver = {
481 	"aacch",
482 	aacch_methods,
483 	sizeof(struct aacch_softc)
484 };
485 
486 static devclass_t	aacch_devclass;
487 DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, 0, 0);
488 
489 static int
490 aacch_probe(device_t dev)
491 {
492 
493 	if ((pci_get_vendor(dev) != 0x9005) ||
494 	    (pci_get_device(dev) != 0x00c5))
495 		return (ENXIO);
496 
497 	device_set_desc(dev, "AAC RAID Channel");
498 	return (-10);
499 }
500 
501 static int
502 aacch_attach(device_t dev)
503 {
504 	struct aacch_softc *sc;
505 
506 	sc = device_get_softc(dev);
507 
508 	sc->dev = dev;
509 
510 	return (0);
511 }
512 
513 static int
514 aacch_detach(device_t dev)
515 {
516 
517 	return (0);
518 }
519