1 | /* $NetBSD: ata_raid_promise.c,v 1.11 2008/03/18 20:46:36 cube 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 Promise ATA RAID controller configuration blocks. |
33 | * |
34 | * Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc. |
35 | */ |
36 | |
37 | #include <sys/cdefs.h> |
38 | __KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.11 2008/03/18 20:46:36 cube 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_promise(struct wd_softc *sc) |
69 | { |
70 | struct promise_raid_conf *info; |
71 | struct vnode *vp; |
72 | int bmajor, error, count; |
73 | u_int disk; |
74 | dev_t dev; |
75 | uint32_t cksum, *ckptr; |
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, PR_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 Promise config block\n" , error); |
102 | goto out; |
103 | } |
104 | |
105 | /* Check the signature. */ |
106 | if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { |
107 | DPRINTF(("%s: Promise signature check failed\n" , |
108 | device_xname(sc->sc_dev))); |
109 | error = ESRCH; |
110 | goto out; |
111 | } |
112 | |
113 | /* Verify the checksum. */ |
114 | for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; |
115 | count++) |
116 | cksum += *ckptr++; |
117 | if (cksum != *ckptr) { |
118 | DPRINTF(("%s: Promise checksum failed\n" , |
119 | device_xname(sc->sc_dev))); |
120 | error = ESRCH; |
121 | goto out; |
122 | } |
123 | |
124 | if (info->raid.integrity != PR_I_VALID) { |
125 | DPRINTF(("%s: Promise config block marked invalid\n" , |
126 | device_xname(sc->sc_dev))); |
127 | error = ESRCH; |
128 | goto out; |
129 | } |
130 | |
131 | /* |
132 | * Lookup or allocate a new array info structure for |
133 | * this array. |
134 | */ |
135 | aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, |
136 | info->raid.array_number); |
137 | |
138 | if (info->raid.generation == 0 || |
139 | info->raid.generation > aai->aai_generation) { |
140 | aai->aai_generation = info->raid.generation; |
141 | /* aai_type and aai_arrayno filled in already */ |
142 | if ((info->raid.status & |
143 | (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == |
144 | (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { |
145 | aai->aai_status |= AAI_S_READY; |
146 | if (info->raid.status & PR_S_DEGRADED) |
147 | aai->aai_status |= AAI_S_DEGRADED; |
148 | } else |
149 | aai->aai_status &= ~AAI_S_READY; |
150 | |
151 | switch (info->raid.type) { |
152 | case PR_T_RAID0: |
153 | aai->aai_level = AAI_L_RAID0; |
154 | break; |
155 | |
156 | case PR_T_RAID1: |
157 | aai->aai_level = AAI_L_RAID1; |
158 | if (info->raid.array_width > 1) |
159 | aai->aai_level |= AAI_L_RAID0; |
160 | break; |
161 | |
162 | case PR_T_SPAN: |
163 | aai->aai_level = AAI_L_SPAN; |
164 | break; |
165 | |
166 | default: |
167 | aprint_error_dev(sc->sc_dev, |
168 | "unknown Promise RAID type 0x%02x\n" , |
169 | info->raid.type); |
170 | error = EINVAL; |
171 | goto out; |
172 | } |
173 | |
174 | aai->aai_interleave = 1U << info->raid.stripe_shift; |
175 | aai->aai_width = info->raid.array_width; |
176 | aai->aai_ndisks = info->raid.total_disks; |
177 | aai->aai_heads = info->raid.heads + 1; |
178 | aai->aai_sectors = info->raid.sectors; |
179 | aai->aai_cylinders = info->raid.cylinders + 1; |
180 | aai->aai_capacity = info->raid.total_sectors; |
181 | aai->aai_offset = 0; |
182 | aai->aai_reserved = 63; |
183 | |
184 | for (disk = 0; disk < aai->aai_ndisks; disk++) { |
185 | adi = &aai->aai_disks[disk]; |
186 | adi->adi_status = 0; |
187 | if (info->raid.disk[disk].flags & PR_F_ONLINE) |
188 | adi->adi_status |= ADI_S_ONLINE; |
189 | if (info->raid.disk[disk].flags & PR_F_ASSIGNED) |
190 | adi->adi_status |= ADI_S_ASSIGNED; |
191 | if (info->raid.disk[disk].flags & PR_F_SPARE) { |
192 | adi->adi_status &= ~ADI_S_ONLINE; |
193 | adi->adi_status |= ADI_S_SPARE; |
194 | } |
195 | if (info->raid.disk[disk].flags & |
196 | (PR_F_REDIR | PR_F_DOWN)) |
197 | adi->adi_status &= ~ADI_S_ONLINE; |
198 | } |
199 | } |
200 | adi = &aai->aai_disks[info->raid.disk_number]; |
201 | if (adi->adi_status) { |
202 | adi->adi_dev = sc->sc_dev; |
203 | adi->adi_sectors = info->raid.disk_sectors; |
204 | adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; |
205 | } |
206 | |
207 | error = 0; |
208 | |
209 | out: |
210 | free(info, M_DEVBUF); |
211 | return (error); |
212 | } |
213 | |