1 /* $NetBSD: ata_raid_adaptec.c,v 1.9 2008/09/15 11:44:50 tron Exp $ */
2
3 /*-
4 * Copyright (c) 2000,2001,2002 S�ren Schmidt <sos@FreeBSD.org>
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 * without modification, immediately at the beginning of the file.
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 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 /*
32 * Support for parsing Adaptec ATA RAID controller configuration blocks.
33 *
34 * Adapted to NetBSD by Allen K. Briggs
35 */
36
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: ata_raid_adaptec.c,v 1.9 2008/09/15 11:44:50 tron Exp $");
39
40 #include <sys/param.h>
41 #include <sys/buf.h>
42 #include <sys/bufq.h>
43 #include <sys/conf.h>
44 #include <sys/device.h>
45 #include <sys/disk.h>
46 #include <sys/disklabel.h>
47 #include <sys/fcntl.h>
48 #include <sys/malloc.h>
49 #include <sys/vnode.h>
50 #include <sys/kauth.h>
51
52 #include <miscfs/specfs/specdev.h>
53
54 #include <dev/ata/atareg.h>
55 #include <dev/ata/atavar.h>
56 #include <dev/ata/wdvar.h>
57
58 #include <dev/ata/ata_raidreg.h>
59 #include <dev/ata/ata_raidvar.h>
60
61 #ifdef ATA_RAID_DEBUG
62 #define DPRINTF(x) printf x
63 #else
64 #define DPRINTF(x) /* nothing */
65 #endif
66
67 int
ata_raid_read_config_adaptec(struct wd_softc * sc)68 ata_raid_read_config_adaptec(struct wd_softc *sc)
69 {
70 struct adaptec_raid_conf *info;
71 struct atabus_softc *atabus;
72 struct vnode *vp;
73 int bmajor, error;
74 dev_t dev;
75 uint32_t gen, drive;
76 struct ataraid_array_info *aai;
77 struct ataraid_disk_info *adi;
78
79 info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK);
80
81 bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0);
82
83 /* Get a vnode for the raw partition of this disk. */
84 dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART);
85 error = bdevvp(dev, &vp);
86 if (error)
87 goto out;
88
89 error = VOP_OPEN(vp, FREAD, NOCRED);
90 if (error) {
91 vput(vp);
92 goto out;
93 }
94
95 error = ata_raid_config_block_rw(vp, ADP_LBA(sc), info,
96 sizeof(*info), B_READ);
97 VOP_CLOSE(vp, FREAD, NOCRED);
98 vput(vp);
99 if (error) {
100 aprint_error_dev(sc->sc_dev,
101 "error %d reading Adaptec config block\n", error);
102 goto out;
103 }
104
105 info->magic_0 = be32toh(info->magic_0);
106 info->magic_1 = be32toh(info->magic_1);
107 info->magic_2 = be32toh(info->magic_2);
108 info->magic_3 = be32toh(info->magic_3);
109 info->magic_4 = be32toh(info->magic_4);
110 /* Check the signature. */
111 if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) {
112 DPRINTF(("%s: Adaptec signature check failed\n",
113 device_xname(sc->sc_dev)));
114 error = ESRCH;
115 goto out;
116 }
117
118 /*
119 * Lookup or allocate a new array info structure for
120 * this array.
121 */
122 aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC,
123 be32toh(info->configs[0].disk_number));
124
125 gen = be32toh(info->generation);
126
127 if (gen == 0 || gen > aai->aai_generation) {
128 aai->aai_generation = gen;
129
130 aai->aai_status = AAI_S_READY;
131
132 switch (info->configs[0].type) {
133 case ADP_T_RAID0:
134 aai->aai_level = AAI_L_RAID0;
135 aai->aai_interleave =
136 (be16toh(info->configs[0].stripe_sectors) >> 1);
137 aai->aai_width = be16toh(info->configs[0].total_disks);
138 break;
139
140 case ADP_T_RAID1:
141 aai->aai_level = AAI_L_RAID1;
142 aai->aai_interleave = 0;
143 aai->aai_width = be16toh(info->configs[0].total_disks)
144 / 2;
145 break;
146
147 default:
148 aprint_error_dev(sc->sc_dev,
149 "unknown Adaptec RAID type 0x%02x\n",
150 info->configs[0].type);
151 error = EINVAL;
152 goto out;
153 }
154
155 aai->aai_type = ATA_RAID_TYPE_ADAPTEC;
156 aai->aai_ndisks = be16toh(info->configs[0].total_disks);
157 aai->aai_capacity = be32toh(info->configs[0].sectors);
158 aai->aai_heads = 255;
159 aai->aai_sectors = 63;
160 aai->aai_cylinders = aai->aai_capacity / (63 * 255);
161 aai->aai_offset = 0;
162 aai->aai_reserved = 17;
163 if (info->configs[0].name)
164 strlcpy(aai->aai_name, info->configs[0].name,
165 sizeof(aai->aai_name));
166
167 /* XXX - bogus. RAID1 shouldn't really have an interleave */
168 if (aai->aai_interleave == 0)
169 aai->aai_interleave = aai->aai_capacity;
170 }
171
172 atabus = device_private(device_parent(sc->sc_dev));
173 drive = atabus->sc_chan->ch_channel;
174 if (drive >= aai->aai_ndisks) {
175 aprint_error_dev(sc->sc_dev,
176 "drive number %d doesn't make sense within %d-disk "
177 "array\n", drive, aai->aai_ndisks);
178 error = EINVAL;
179 goto out;
180 }
181
182 adi = &aai->aai_disks[drive];
183 adi->adi_dev = sc->sc_dev;
184 adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED;
185 adi->adi_sectors = aai->aai_capacity;
186 adi->adi_compsize = be32toh(info->configs[drive+1].sectors);
187
188 error = 0;
189
190 out:
191 free(info, M_DEVBUF);
192 return (error);
193 }
194