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 Søren 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 |
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 | |