1 /* $NetBSD: ata_raid_adaptec.c,v 1.13 2023/08/01 07:58:41 mrg 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 1.13 2023/08/01 07:58:41 mrg 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/vnode.h>
49 #include <sys/kauth.h>
50
51 #include <miscfs/specfs/specdev.h>
52
53 #include <dev/ata/atareg.h>
54 #include <dev/ata/atavar.h>
55 #include <dev/ata/wdvar.h>
56
57 #include <dev/ata/ata_raidreg.h>
58 #include <dev/ata/ata_raidvar.h>
59
60 #ifdef ATA_RAID_DEBUG
61 #define DPRINTF(x) printf x
62 #else
63 #define DPRINTF(x) /* nothing */
64 #endif
65
66 int
ata_raid_read_config_adaptec(struct wd_softc * sc)67 ata_raid_read_config_adaptec(struct wd_softc *sc)
68 {
69 struct dk_softc *dksc = &sc->sc_dksc;
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 = kmem_zalloc(sizeof(*info), KM_SLEEP);
80
81 bmajor = devsw_name2blk(dksc->sc_xname, NULL, 0);
82
83 /* Get a vnode for the raw partition of this disk. */
84 dev = MAKEDISKDEV(bmajor, device_unit(dksc->sc_dev), RAW_PART);
85 error = bdevvp(dev, &vp);
86 if (error)
87 goto out;
88
89 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
90 error = VOP_OPEN(vp, FREAD, NOCRED);
91 if (error) {
92 vput(vp);
93 goto out;
94 }
95
96 error = ata_raid_config_block_rw(vp, ADP_LBA(sc), info,
97 sizeof(*info), B_READ);
98 VOP_CLOSE(vp, FREAD, NOCRED);
99 vput(vp);
100 if (error) {
101 aprint_error_dev(dksc->sc_dev,
102 "error %d reading Adaptec config block\n", error);
103 goto out;
104 }
105
106 info->magic_0 = be32toh(info->magic_0);
107 info->magic_1 = be32toh(info->magic_1);
108 info->magic_2 = be32toh(info->magic_2);
109 info->magic_3 = be32toh(info->magic_3);
110 info->magic_4 = be32toh(info->magic_4);
111 /* Check the signature. */
112 if (info->magic_0 != ADP_MAGIC_0 || info->magic_3 != ADP_MAGIC_3) {
113 DPRINTF(("%s: Adaptec signature check failed\n",
114 dksc->sc_xname));
115 error = ESRCH;
116 goto out;
117 }
118
119 /*
120 * Lookup or allocate a new array info structure for
121 * this array.
122 */
123 aai = ata_raid_get_array_info(ATA_RAID_TYPE_ADAPTEC,
124 be32toh(info->configs[0].disk_number));
125
126 gen = be32toh(info->generation);
127
128 if (gen == 0 || gen > aai->aai_generation) {
129 aai->aai_generation = gen;
130
131 aai->aai_status = AAI_S_READY;
132
133 switch (info->configs[0].type) {
134 case ADP_T_RAID0:
135 aai->aai_level = AAI_L_RAID0;
136 aai->aai_interleave =
137 (be16toh(info->configs[0].stripe_sectors) >> 1);
138 aai->aai_width = be16toh(info->configs[0].total_disks);
139 break;
140
141 case ADP_T_RAID1:
142 aai->aai_level = AAI_L_RAID1;
143 aai->aai_interleave = 0;
144 aai->aai_width = be16toh(info->configs[0].total_disks)
145 / 2;
146 break;
147
148 default:
149 aprint_error_dev(dksc->sc_dev,
150 "unknown Adaptec RAID type 0x%02x\n",
151 info->configs[0].type);
152 error = EINVAL;
153 goto out;
154 }
155
156 aai->aai_type = ATA_RAID_TYPE_ADAPTEC;
157 aai->aai_ndisks = be16toh(info->configs[0].total_disks);
158 aai->aai_capacity = be32toh(info->configs[0].sectors);
159 aai->aai_heads = 255;
160 aai->aai_sectors = 63;
161 aai->aai_cylinders = aai->aai_capacity / (63 * 255);
162 aai->aai_offset = 0;
163 aai->aai_reserved = 17;
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(dksc->sc_dev));
173 drive = atabus->sc_chan->ch_channel;
174 if (drive >= aai->aai_ndisks) {
175 aprint_error_dev(dksc->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 = dksc->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 kmem_free(info, sizeof(*info));
192 return (error);
193 }
194