1 /*-
2 * Copyright (c) 1999 Jonathan Lemon
3 * Copyright (c) 1999, 2000 Michael Smith
4 * Copyright (c) 2000 BSDi
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 /*-
29 * Copyright (c) 2002 Eric Moore
30 * Copyright (c) 2002 LSI Logic Corporation
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. The party using or redistributing the source code and binary forms
42 * agrees to the disclaimer below and the terms and conditions set forth
43 * herein.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 *
57 * $FreeBSD: src/sys/dev/amr/amr_disk.c,v 1.39 2006/10/31 21:19:25 pjd Exp $
58 */
59
60 /*
61 * Disk driver for AMI MegaRaid controllers
62 */
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/module.h>
68
69 #include <sys/bio.h>
70 #include <sys/bus.h>
71 #include <sys/conf.h>
72 #include <sys/dtype.h>
73
74 #include <sys/rman.h>
75
76 #include <dev/raid/amr/amrio.h>
77 #include <dev/raid/amr/amrreg.h>
78 #include <dev/raid/amr/amrvar.h>
79 #include <dev/raid/amr/amr_tables.h>
80
81 /* prototypes */
82 static int amrd_probe(device_t dev);
83 static int amrd_attach(device_t dev);
84 static int amrd_detach(device_t dev);
85
86 static d_open_t amrd_open;
87 static d_strategy_t amrd_strategy;
88 static d_dump_t amrd_dump;
89
90 static struct dev_ops amrd_ops = {
91 { "amrd", 0, D_DISK },
92 .d_open = amrd_open,
93 .d_strategy = amrd_strategy,
94 .d_dump = amrd_dump,
95 };
96
97 static devclass_t amrd_devclass;
98
99 static device_method_t amrd_methods[] = {
100 DEVMETHOD(device_probe, amrd_probe),
101 DEVMETHOD(device_attach, amrd_attach),
102 DEVMETHOD(device_detach, amrd_detach),
103 DEVMETHOD_END
104 };
105
106 static driver_t amrd_driver = {
107 "amrd",
108 amrd_methods,
109 sizeof(struct amrd_softc)
110 };
111
112 DRIVER_MODULE_ORDERED(amrd, amr, amrd_driver, &amrd_devclass, NULL, NULL,
113 SI_ORDER_THIRD);
114
115 static int
amrd_open(struct dev_open_args * ap)116 amrd_open(struct dev_open_args *ap)
117 {
118 struct amrd_softc *sc = ap->a_head.a_dev->si_drv1;
119
120 debug_called(1);
121
122 if (sc == NULL)
123 return (ENXIO);
124
125 /* controller not active? */
126 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
127 return(ENXIO);
128
129 return (0);
130 }
131 /********************************************************************************
132 * System crashdump support
133 */
134
135 static int
amrd_dump(struct dev_dump_args * ap)136 amrd_dump(struct dev_dump_args *ap)
137 {
138 cdev_t dev = ap->a_head.a_dev;
139 off_t offset = ap->a_offset;
140 void *virtual = ap->a_virtual;
141 size_t length = ap->a_length;
142 struct amrd_softc *amrd_sc;
143 struct amr_softc *amr_sc;
144 int error = 0;
145
146 amrd_sc = (struct amrd_softc *)dev->si_drv1;
147 if (amrd_sc == NULL)
148 return(ENXIO);
149 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller;
150
151 if (length > 0) {
152 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive;
153
154 error = amr_dump_blocks(amr_sc, driveno, offset / AMR_BLKSIZE,
155 virtual, (int)length / AMR_BLKSIZE);
156 }
157 return(error);
158 }
159
160 /*
161 * Read/write routine for a buffer. Finds the proper unit, range checks
162 * arguments, and schedules the transfer. Does not wait for the transfer
163 * to complete. Multi-page transfers are supported. All I/O requests must
164 * be a multiple of a sector in length.
165 */
166 static int
amrd_strategy(struct dev_strategy_args * ap)167 amrd_strategy(struct dev_strategy_args *ap)
168 {
169 cdev_t dev = ap->a_head.a_dev;
170 struct bio *bio = ap->a_bio;
171 struct buf *bp = bio->bio_buf;
172 struct amrd_softc *sc = (struct amrd_softc *)dev->si_drv1;
173
174 /* bogus disk? */
175 if (sc == NULL) {
176 bp->b_error = EINVAL;
177 goto bad;
178 }
179 bio->bio_driver_info = sc;
180
181 devstat_start_transaction(&sc->amrd_stats);
182 amr_submit_bio(sc->amrd_controller, bio);
183 return (0);
184
185 bad:
186 bp->b_flags |= B_ERROR;
187
188 /*
189 * Correctly set the buf to indicate a completed transfer
190 */
191 bp->b_resid = bp->b_bcount;
192 biodone(bio);
193 return (0);
194 }
195
196 void
amrd_intr(void * data)197 amrd_intr(void *data)
198 {
199 struct bio *bio = (struct bio *)data;
200 struct buf *bp = bio->bio_buf;
201 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_driver_info;
202
203 debug_called(2);
204
205 devstat_end_transaction_buf(&sc->amrd_stats, bp);
206 if (bp->b_flags & B_ERROR) {
207 bp->b_error = EIO;
208 debug(1, "i/o error\n");
209 } else {
210 bp->b_resid = 0;
211 }
212
213 biodone(bio);
214 }
215
216 static int
amrd_probe(device_t dev)217 amrd_probe(device_t dev)
218 {
219
220 debug_called(1);
221
222 device_set_desc(dev, "LSILogic MegaRAID logical drive");
223 return (0);
224 }
225
226 static int
amrd_attach(device_t dev)227 amrd_attach(device_t dev)
228 {
229 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
230 device_t parent;
231 struct disk_info info;
232
233 debug_called(1);
234
235 parent = device_get_parent(dev);
236 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
237 sc->amrd_unit = device_get_unit(dev);
238 sc->amrd_drive = device_get_ivars(dev);
239 sc->amrd_dev = dev;
240
241 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
242 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
243 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK,
244 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state)));
245
246 devstat_add_entry(&sc->amrd_stats, "amrd", sc->amrd_unit, AMR_BLKSIZE,
247 DEVSTAT_NO_ORDERED_TAGS,
248 DEVSTAT_TYPE_STORARRAY | DEVSTAT_TYPE_IF_OTHER,
249 DEVSTAT_PRIORITY_ARRAY);
250
251 sc->amrd_dev_t = disk_create(sc->amrd_unit, &sc->amrd_disk, &amrd_ops);
252 sc->amrd_dev_t->si_drv1 = sc;
253
254 /* set maximum I/O size to match the maximum s/g size */
255 sc->amrd_dev_t->si_iosize_max = (AMR_NSEG - 1) * PAGE_SIZE;
256
257 /*
258 * Set disk info, as it appears that all needed data is available already.
259 * Setting the disk info will also cause the probing to start.
260 */
261 bzero(&info, sizeof(info));
262 info.d_media_blksize = AMR_BLKSIZE; /* optional */
263 info.d_media_blocks = sc->amrd_drive->al_size;
264
265 info.d_type = DTYPE_SCSI; /* mandatory */
266 info.d_secpertrack = sc->amrd_drive->al_sectors;
267 info.d_nheads = sc->amrd_drive->al_heads;
268 info.d_ncylinders = sc->amrd_drive->al_cylinders;
269 info.d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
270
271 disk_setdiskinfo(&sc->amrd_disk, &info);
272
273 return (0);
274 }
275
276 static int
amrd_detach(device_t dev)277 amrd_detach(device_t dev)
278 {
279 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
280
281 debug_called(1);
282
283 #if 0 /* XXX swildner */
284 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN)
285 return(EBUSY);
286 #endif
287
288 devstat_remove_entry(&sc->amrd_stats);
289 disk_destroy(&sc->amrd_disk);
290
291 return(0);
292 }
293
294