xref: /dragonfly/sys/dev/raid/amr/amr_disk.c (revision 5716abfe)
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