xref: /dragonfly/sys/dev/raid/aac/aac_pci.c (revision 030b0c8c)
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: head/sys/dev/aac/aac_pci.c 254005 2013-08-06 19:14:02Z marius $
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 int aac_msi_enable = 1;
61 TUNABLE_INT("hw.mfi.msi.enable", &aac_msi_enable);
62 
63 static device_method_t aac_methods[] = {
64 	/* Device interface */
65 	DEVMETHOD(device_probe,		aac_pci_probe),
66 	DEVMETHOD(device_attach,	aac_pci_attach),
67 	DEVMETHOD(device_detach,	aac_detach),
68 	DEVMETHOD(device_suspend,	aac_suspend),
69 	DEVMETHOD(device_resume,	aac_resume),
70 
71 	DEVMETHOD_END
72 };
73 
74 static driver_t aac_pci_driver = {
75 	"aac",
76 	aac_methods,
77 	sizeof(struct aac_softc)
78 };
79 
80 static devclass_t	aac_devclass;
81 
82 DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, NULL, NULL);
83 MODULE_DEPEND(aac, pci, 1, 1, 1);
84 
85 
86 static const struct aac_ident
87 {
88 	u_int16_t		vendor;
89 	u_int16_t		device;
90 	u_int16_t		subvendor;
91 	u_int16_t		subdevice;
92 	int			hwif;
93 	int			quirks;
94 	const char		*desc;
95 } aac_identifiers[] = {
96 	{0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
97 	"Dell PERC 2/Si"},
98 	{0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
99 	"Dell PERC 3/Di"},
100 	{0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
101 	"Dell PERC 3/Si"},
102 	{0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
103 	"Dell PERC 3/Si"},
104 	{0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
105 	"Dell PERC 3/Di"},
106 	{0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
107 	"Dell PERC 3/Di"},
108 	{0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
109 	"Dell PERC 3/Di"},
110 	{0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
111 	"Dell PERC 3/Di"},
112 	{0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
113 	"Dell PERC 3/Di"},
114 	{0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
115 	"Adaptec AAC-364"},
116 	{0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
117 	 AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
118 	{0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
119 	 "Dell PERC 2/QC"},
120 	{0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
121 	 "HP NetRaid-4M"},
122 	{0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
123 	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
124 	{0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
125 	 AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
126 	{0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
127 	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
128 	{0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
129 	 "Adaptec SATA RAID 2410SA"},
130 	{0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
131 	 "Dell CERC SATA RAID 2"},
132 	{0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
133 	 "Adaptec SATA RAID 2810SA"},
134 	{0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
135 	 "Adaptec SATA RAID 21610SA"},
136 	{0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
137 	 "HP ML110 G2 (Adaptec 2610SA)"},
138 	{0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
139 	 "Adaptec SCSI RAID 2230S"},
140 	{0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
141 	 "Adaptec SCSI RAID 2130S"},
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, AAC_FLAGS_NOMSI,
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 
279 static const struct aac_ident
280 aac_family_identifiers[] = {
281 	{0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
282 	 "Adaptec RAID Controller"},
283 	{0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
284 	 "Adaptec RAID Controller"},
285 	{0, 0, 0, 0, 0, 0, 0}
286 };
287 
288 static const struct aac_ident *
aac_find_ident(device_t dev)289 aac_find_ident(device_t dev)
290 {
291 	const struct aac_ident *m;
292 	u_int16_t vendid, devid, sub_vendid, sub_devid;
293 
294 	vendid = pci_get_vendor(dev);
295 	devid = pci_get_device(dev);
296 	sub_vendid = pci_get_subvendor(dev);
297 	sub_devid = pci_get_subdevice(dev);
298 
299 	for (m = aac_identifiers; m->vendor != 0; m++) {
300 		if ((m->vendor == vendid) && (m->device == devid) &&
301 		    (m->subvendor == sub_vendid) &&
302 		    (m->subdevice == sub_devid))
303 			return (m);
304 	}
305 
306 	for (m = aac_family_identifiers; m->vendor != 0; m++) {
307 		if ((m->vendor == vendid) && (m->device == devid))
308 			return (m);
309 	}
310 	return (NULL);
311 }
312 
313 /*
314  * Determine whether this is one of our supported adapters.
315  */
316 static int
aac_pci_probe(device_t dev)317 aac_pci_probe(device_t dev)
318 {
319 	const 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
aac_pci_attach(device_t dev)334 aac_pci_attach(device_t dev)
335 {
336 	struct aac_softc *sc;
337 	const struct aac_ident *id;
338 	int error, rid;
339 	u_int irq_flags;
340 
341 	fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
342 
343 	/*
344 	 * Initialise softc.
345 	 */
346 	sc = device_get_softc(dev);
347 	sc->aac_dev = dev;
348 
349 	/* assume failure is 'not configured' */
350 	error = ENXIO;
351 
352 	/*
353 	 * Verify that the adapter is correctly set up in PCI space.
354 	 */
355 	pci_enable_busmaster(dev);
356 	if (!(pci_read_config(dev, PCIR_COMMAND, 2) & PCIM_CMD_BUSMASTEREN)) {
357 		device_printf(dev, "can't enable bus-master feature\n");
358 		goto out;
359 	}
360 
361 	/*
362 	 * Detect the hardware interface version, set up the bus interface
363 	 * indirection.
364 	 */
365 	id = aac_find_ident(dev);
366 	sc->aac_hwif = id->hwif;
367 	switch(sc->aac_hwif) {
368 	case AAC_HWIF_I960RX:
369 	case AAC_HWIF_NARK:
370 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
371 		    "set hardware up for i960Rx/NARK");
372 		sc->aac_if = &aac_rx_interface;
373 		break;
374 	case AAC_HWIF_STRONGARM:
375 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
376 		    "set hardware up for StrongARM");
377 		sc->aac_if = &aac_sa_interface;
378 		break;
379 	case AAC_HWIF_RKT:
380 		fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
381 		    "set hardware up for Rocket/MIPS");
382 		sc->aac_if = &aac_rkt_interface;
383 		break;
384 	default:
385 		sc->aac_hwif = AAC_HWIF_UNKNOWN;
386 		device_printf(dev, "unknown hardware type\n");
387 		goto out;
388 	}
389 
390 	/* Set up quirks */
391 	sc->flags = id->quirks;
392 
393 	/*
394 	 * Allocate the PCI register window(s).
395 	 */
396 	rid = PCIR_BAR(0);
397 	if ((sc->aac_regs_res0 = bus_alloc_resource_any(dev,
398 	    SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
399 		device_printf(dev, "can't allocate register window 0\n");
400 		goto out;
401 	}
402 	sc->aac_btag0 = rman_get_bustag(sc->aac_regs_res0);
403 	sc->aac_bhandle0 = rman_get_bushandle(sc->aac_regs_res0);
404 
405 	if (sc->aac_hwif == AAC_HWIF_NARK) {
406 		rid = PCIR_BAR(1);
407 		if ((sc->aac_regs_res1 = bus_alloc_resource_any(dev,
408 		    SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
409 			device_printf(dev,
410 			    "can't allocate register window 1\n");
411 			goto out;
412 		}
413 		sc->aac_btag1 = rman_get_bustag(sc->aac_regs_res1);
414 		sc->aac_bhandle1 = rman_get_bushandle(sc->aac_regs_res1);
415 	} else {
416 		sc->aac_regs_res1 = sc->aac_regs_res0;
417 		sc->aac_btag1 = sc->aac_btag0;
418 		sc->aac_bhandle1 = sc->aac_bhandle0;
419 	}
420 
421 	/*
422 	 * Allocate the interrupt.
423 	 */
424 	sc->aac_irq_rid = 0;
425 	if ((sc->flags & AAC_FLAGS_NOMSI) != 0)
426 		aac_msi_enable = 0;
427 	sc->aac_irq_type = pci_alloc_1intr(sc->aac_dev, aac_msi_enable,
428 	    &sc->aac_irq_rid, &irq_flags);
429 	if ((sc->aac_irq = bus_alloc_resource_any(sc->aac_dev, SYS_RES_IRQ,
430 	    &sc->aac_irq_rid, irq_flags)) == NULL) {
431 		device_printf(dev, "can't allocate interrupt\n");
432 		goto out;
433 	}
434 
435 	/*
436 	 * Allocate the parent bus DMA tag appropriate for our PCI interface.
437 	 *
438 	 * Note that some of these controllers are 64-bit capable.
439 	 */
440 	if (bus_dma_tag_create(bus_get_dma_tag(dev),	/* parent */
441 			       PAGE_SIZE, 0,		/* algnmnt, boundary */
442 			       BUS_SPACE_MAXADDR,	/* lowaddr */
443 			       BUS_SPACE_MAXADDR, 	/* highaddr */
444 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsize */
445 			       BUS_SPACE_UNRESTRICTED,	/* nsegments */
446 			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
447 			       0,			/* flags */
448 			       &sc->aac_parent_dmat)) {
449 		device_printf(dev, "can't allocate parent DMA tag\n");
450 		goto out;
451 	}
452 
453 	/*
454 	 * Do bus-independent initialisation.
455 	 */
456 	error = aac_attach(sc);
457 
458 out:
459 	if (error)
460 		aac_free(sc);
461 	return(error);
462 }
463 
464 /*
465  * Do nothing driver that will attach to the SCSI channels of a Dell PERC
466  * controller.  This is needed to keep the power management subsystem from
467  * trying to power down these devices.
468  */
469 static int aacch_probe(device_t dev);
470 static int aacch_attach(device_t dev);
471 static int aacch_detach(device_t dev);
472 
473 static device_method_t aacch_methods[] = {
474 	/* Device interface */
475 	DEVMETHOD(device_probe,		aacch_probe),
476 	DEVMETHOD(device_attach,	aacch_attach),
477 	DEVMETHOD(device_detach,	aacch_detach),
478 	DEVMETHOD_END
479 };
480 
481 struct aacch_softc {
482 	device_t	dev;
483 };
484 
485 static driver_t aacch_driver = {
486 	"aacch",
487 	aacch_methods,
488 	sizeof(struct aacch_softc)
489 };
490 
491 static devclass_t	aacch_devclass;
492 DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, NULL, NULL);
493 
494 static int
aacch_probe(device_t dev)495 aacch_probe(device_t dev)
496 {
497 
498 	if ((pci_get_vendor(dev) != 0x9005) ||
499 	    (pci_get_device(dev) != 0x00c5))
500 		return (ENXIO);
501 
502 	device_set_desc(dev, "AAC RAID Channel");
503 	return (-10);
504 }
505 
506 static int
aacch_attach(device_t dev __unused)507 aacch_attach(device_t dev __unused)
508 {
509 
510 	return (0);
511 }
512 
513 static int
aacch_detach(device_t dev __unused)514 aacch_detach(device_t dev __unused)
515 {
516 
517 	return (0);
518 }
519