FreeBSD/Linux Kernel Cross Reference
sys/dev/amr/amr_disk.c
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
58 #include <sys/cdefs.h>
59 __FBSDID("$FreeBSD: releng/6.0/sys/dev/amr/amr_disk.c 140340 2005-01-16 07:34:26Z scottl $");
60
61 /*
62 * Disk driver for AMI MegaRaid controllers
63 */
64
65 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/kernel.h>
68 #include <sys/module.h>
69
70 #include <dev/amr/amr_compat.h>
71 #include <sys/bus.h>
72 #include <sys/conf.h>
73
74 #include <machine/bus.h>
75 #include <sys/rman.h>
76
77 #include <dev/amr/amrio.h>
78 #include <dev/amr/amrreg.h>
79 #include <dev/amr/amrvar.h>
80 #include <dev/amr/amr_tables.h>
81
82 /* prototypes */
83 static int amrd_probe(device_t dev);
84 static int amrd_attach(device_t dev);
85 static int amrd_detach(device_t dev);
86
87 static disk_open_t amrd_open;
88 static disk_strategy_t amrd_strategy;
89
90 static devclass_t amrd_devclass;
91 #ifdef FREEBSD_4
92 static int disks_registered = 0;
93 #endif
94
95 static device_method_t amrd_methods[] = {
96 DEVMETHOD(device_probe, amrd_probe),
97 DEVMETHOD(device_attach, amrd_attach),
98 DEVMETHOD(device_detach, amrd_detach),
99 { 0, 0 }
100 };
101
102 static driver_t amrd_driver = {
103 "amrd",
104 amrd_methods,
105 sizeof(struct amrd_softc)
106 };
107
108 DRIVER_MODULE(amrd, amr, amrd_driver, amrd_devclass, 0, 0);
109
110 static int
111 amrd_open(struct disk *dp)
112 {
113 struct amrd_softc *sc = (struct amrd_softc *)dp->d_drv1;
114 #if __FreeBSD_version < 500000 /* old buf style */
115 struct disklabel *label;
116 #endif
117
118 debug_called(1);
119
120 if (sc == NULL)
121 return (ENXIO);
122
123 /* controller not active? */
124 if (sc->amrd_controller->amr_state & AMR_STATE_SHUTDOWN)
125 return(ENXIO);
126
127 #if __FreeBSD_version < 500000 /* old buf style */
128 label = &sc->amrd_disk.d_label;
129 bzero(label, sizeof(*label));
130 label->d_type = DTYPE_SCSI;
131 label->d_secsize = AMR_BLKSIZE;
132 label->d_nsectors = sc->amrd_drive->al_sectors;
133 label->d_ntracks = sc->amrd_drive->al_heads;
134 label->d_ncylinders = sc->amrd_drive->al_cylinders;
135 label->d_secpercyl = sc->amrd_drive->al_sectors * sc->amrd_drive->al_heads;
136 label->d_secperunit = sc->amrd_drive->al_size;
137 #else
138 sc->amrd_disk->d_sectorsize = AMR_BLKSIZE;
139 sc->amrd_disk->d_mediasize = (off_t)sc->amrd_drive->al_size * AMR_BLKSIZE;
140 sc->amrd_disk->d_fwsectors = sc->amrd_drive->al_sectors;
141 sc->amrd_disk->d_fwheads = sc->amrd_drive->al_heads;
142 #endif
143
144 return (0);
145 }
146 /********************************************************************************
147 * System crashdump support
148 */
149
150 static int
151 amrd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
152 {
153
154 struct amrd_softc *amrd_sc;
155 struct amr_softc *amr_sc;
156 int error;
157 struct disk *dp;
158
159 dp = arg;
160 amrd_sc = (struct amrd_softc *)dp->d_drv1;
161 if (amrd_sc == NULL)
162 return(ENXIO);
163 amr_sc = (struct amr_softc *)amrd_sc->amrd_controller;
164
165 if (length > 0) {
166 int driveno = amrd_sc->amrd_drive - amr_sc->amr_drive;
167 if ((error = amr_dump_blocks(amr_sc,driveno,offset / AMR_BLKSIZE ,(void *)virtual,(int) length / AMR_BLKSIZE )) != 0)
168 return(error);
169
170 }
171 return(0);
172 }
173
174 /*
175 * Read/write routine for a buffer. Finds the proper unit, range checks
176 * arguments, and schedules the transfer. Does not wait for the transfer
177 * to complete. Multi-page transfers are supported. All I/O requests must
178 * be a multiple of a sector in length.
179 */
180 static void
181 amrd_strategy(struct bio *bio)
182 {
183 struct amrd_softc *sc = (struct amrd_softc *)bio->bio_disk->d_drv1;
184
185 /* bogus disk? */
186 if (sc == NULL) {
187 bio->bio_error = EINVAL;
188 goto bad;
189 }
190
191 amr_submit_bio(sc->amrd_controller, bio);
192 return;
193
194 bad:
195 bio->bio_flags |= BIO_ERROR;
196
197 /*
198 * Correctly set the buf to indicate a completed transfer
199 */
200 bio->bio_resid = bio->bio_bcount;
201 biodone(bio);
202 return;
203 }
204
205 void
206 amrd_intr(void *data)
207 {
208 struct bio *bio = (struct bio *)data;
209
210 debug_called(2);
211
212 if (bio->bio_flags & BIO_ERROR) {
213 bio->bio_error = EIO;
214 debug(1, "i/o error\n");
215 } else {
216 bio->bio_resid = 0;
217 }
218
219 AMR_BIO_FINISH(bio);
220 }
221
222 static int
223 amrd_probe(device_t dev)
224 {
225
226 debug_called(1);
227
228 device_set_desc(dev, "LSILogic MegaRAID logical drive");
229 return (0);
230 }
231
232 static int
233 amrd_attach(device_t dev)
234 {
235 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
236 device_t parent;
237
238 debug_called(1);
239
240 parent = device_get_parent(dev);
241 sc->amrd_controller = (struct amr_softc *)device_get_softc(parent);
242 sc->amrd_unit = device_get_unit(dev);
243 sc->amrd_drive = device_get_ivars(dev);
244 sc->amrd_dev = dev;
245
246 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
247 sc->amrd_drive->al_size / ((1024 * 1024) / AMR_BLKSIZE),
248 sc->amrd_drive->al_size, sc->amrd_drive->al_properties & AMR_DRV_RAID_MASK,
249 amr_describe_code(amr_table_drvstate, AMR_DRV_CURSTATE(sc->amrd_drive->al_state)));
250
251 sc->amrd_disk = disk_alloc();
252 sc->amrd_disk->d_drv1 = sc;
253 sc->amrd_disk->d_maxsize = (AMR_NSEG - 1) * PAGE_SIZE;
254 sc->amrd_disk->d_open = amrd_open;
255 sc->amrd_disk->d_strategy = amrd_strategy;
256 sc->amrd_disk->d_name = "amrd";
257 sc->amrd_disk->d_dump = (dumper_t *)amrd_dump;
258 sc->amrd_disk->d_unit = sc->amrd_unit;
259 sc->amrd_disk->d_flags = 0;
260 disk_create(sc->amrd_disk, DISK_VERSION);
261 #ifdef FREEBSD_4
262 disks_registered++;
263 #endif
264
265 return (0);
266 }
267
268 static int
269 amrd_detach(device_t dev)
270 {
271 struct amrd_softc *sc = (struct amrd_softc *)device_get_softc(dev);
272
273 debug_called(1);
274
275 if (sc->amrd_disk->d_flags & DISKFLAG_OPEN)
276 return(EBUSY);
277
278 #ifdef FREEBSD_4
279 if (--disks_registered == 0)
280 cdevsw_remove(&amrddisk_cdevsw);
281 #else
282 disk_destroy(sc->amrd_disk);
283 #endif
284 return(0);
285 }
286
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