1 | /* $NetBSD: ata_raid_nvidia.c,v 1.2 2014/03/25 16:19:13 christos Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2000 - 2008 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 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | |
29 | /* |
30 | * Support for parsing nVIDIA MediaShield RAID controller configuration blocks. |
31 | * |
32 | * Adapted to NetBSD by Tatoku Ogaito (tacha@NetBSD.org) |
33 | */ |
34 | |
35 | #include <sys/cdefs.h> |
36 | __KERNEL_RCSID(0, "$NetBSD: ata_raid_nvidia.c,v 1.2 2014/03/25 16:19:13 christos Exp $" ); |
37 | |
38 | #include <sys/param.h> |
39 | #include <sys/buf.h> |
40 | #include <sys/bufq.h> |
41 | #include <sys/conf.h> |
42 | #include <sys/device.h> |
43 | #include <sys/disk.h> |
44 | #include <sys/disklabel.h> |
45 | #include <sys/fcntl.h> |
46 | #include <sys/malloc.h> |
47 | #include <sys/vnode.h> |
48 | #include <sys/kauth.h> |
49 | |
50 | #include <miscfs/specfs/specdev.h> |
51 | |
52 | #include <dev/ata/atareg.h> |
53 | #include <dev/ata/atavar.h> |
54 | #include <dev/ata/wdvar.h> |
55 | |
56 | #include <dev/ata/ata_raidreg.h> |
57 | #include <dev/ata/ata_raidvar.h> |
58 | |
59 | #ifdef ATA_RAID_DEBUG |
60 | #define DPRINTF(x) printf x |
61 | #else |
62 | #define DPRINTF(x) /* nothing */ |
63 | #endif |
64 | |
65 | #ifdef ATA_RAID_DEBUG |
66 | static const char * |
67 | ata_raid_nvidia_type(int type) |
68 | { |
69 | static char buffer[16]; |
70 | |
71 | switch (type) { |
72 | case NV_T_SPAN: return "SPAN" ; |
73 | case NV_T_RAID0: return "RAID0" ; |
74 | case NV_T_RAID1: return "RAID1" ; |
75 | case NV_T_RAID3: return "RAID3" ; |
76 | case NV_T_RAID5: return "RAID5" ; |
77 | case NV_T_RAID01: return "RAID0+1" ; |
78 | default: |
79 | snprintf(buffer, sizeof(buffer), "UNKNOWN 0x%02x" , type); |
80 | return buffer; |
81 | } |
82 | } |
83 | |
84 | static void |
85 | ata_raid_nvidia_print_info(struct nvidia_raid_conf *info) |
86 | { |
87 | printf("******** ATA nVidia MediaShield Metadata ********\n" ); |
88 | printf("nvidia_id <%.8s>\n" , info->nvidia_id); |
89 | printf("config_size %d\n" , info->config_size); |
90 | printf("checksum 0x%08x\n" , info->checksum); |
91 | printf("version 0x%04x\n" , info->version); |
92 | printf("disk_number %d\n" , info->disk_number); |
93 | printf("dummy_0 0x%02x\n" , info->dummy_0); |
94 | printf("total_sectors %d\n" , info->total_sectors); |
95 | printf("sectors_size %d\n" , info->sector_size); |
96 | printf("serial %.16s\n" , info->serial); |
97 | printf("revision %.4s\n" , info->revision); |
98 | printf("dummy_1 0x%08x\n" , info->dummy_1); |
99 | printf("magic_0 0x%08x\n" , info->magic_0); |
100 | printf("magic_1 0x%016jx\n" , info->magic_1); |
101 | printf("magic_2 0x%016jx\n" , info->magic_2); |
102 | printf("flags 0x%02x\n" , info->flags); |
103 | printf("array_width %d\n" , info->array_width); |
104 | printf("total_disks %d\n" , info->total_disks); |
105 | printf("dummy_2 0x%02x\n" , info->dummy_2); |
106 | printf("type %s\n" , ata_raid_nvidia_type(info->type)); |
107 | printf("dummy_3 0x%04x\n" , info->dummy_3); |
108 | printf("stripe_sectors %d\n" , info->stripe_sectors); |
109 | printf("stripe_bytes %d\n" , info->stripe_bytes); |
110 | printf("stripe_shift %d\n" , info->stripe_shift); |
111 | printf("stripe_mask 0x%08x\n" , info->stripe_mask); |
112 | printf("stripe_sizesectors %d\n" , info->stripe_sizesectors); |
113 | printf("stripe_sizebytes %d\n" , info->stripe_sizebytes); |
114 | printf("rebuild_lba %d\n" , info->rebuild_lba); |
115 | printf("dummy_4 0x%08x\n" , info->dummy_4); |
116 | printf("dummy_5 0x%08x\n" , info->dummy_5); |
117 | printf("status 0x%08x\n" , info->status); |
118 | printf("=================================================\n" ); |
119 | } |
120 | #endif |
121 | |
122 | int |
123 | ata_raid_read_config_nvidia(struct wd_softc *sc) |
124 | { |
125 | struct nvidia_raid_conf *info; |
126 | struct vnode *vp; |
127 | int bmajor, error, count; |
128 | dev_t dev; |
129 | uint32_t cksum, *ckptr; |
130 | struct ataraid_array_info *aai; |
131 | struct ataraid_disk_info *adi; |
132 | static struct _arrayno { |
133 | uint64_t magic1; |
134 | uint64_t magic2; |
135 | struct _arrayno *next; |
136 | } arrayno = { 0, 0, NULL}, *anptr; |
137 | |
138 | info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); |
139 | |
140 | bmajor = devsw_name2blk(device_xname(sc->sc_dev), NULL, 0); |
141 | |
142 | /* Get a vnode for the raw partition of this disk. */ |
143 | dev = MAKEDISKDEV(bmajor, device_unit(sc->sc_dev), RAW_PART); |
144 | error = bdevvp(dev, &vp); |
145 | if (error) |
146 | goto out; |
147 | |
148 | error = VOP_OPEN(vp, FREAD, NOCRED); |
149 | if (error) { |
150 | vput(vp); |
151 | goto out; |
152 | } |
153 | |
154 | error = ata_raid_config_block_rw(vp, NVIDIA_LBA(sc), info, |
155 | sizeof(*info), B_READ); |
156 | VOP_CLOSE(vp, FREAD, NOCRED); |
157 | vput(vp); |
158 | if (error) { |
159 | aprint_error_dev(sc->sc_dev, |
160 | "error %d reading nVidia MediaShield config block\n" , error); |
161 | goto out; |
162 | } |
163 | |
164 | #ifdef ATA_RAID_DEBUG |
165 | ata_raid_nvidia_print_info(info); |
166 | #endif |
167 | |
168 | /* Check the signature. */ |
169 | if (strncmp(info->nvidia_id, NV_MAGIC, strlen(NV_MAGIC)) != 0) { |
170 | DPRINTF(("%s: nVidia signature check failed\n" , |
171 | device_xname(sc->sc_dev))); |
172 | error = ESRCH; |
173 | goto out; |
174 | } |
175 | |
176 | /* check if the checksum is OK */ |
177 | for (cksum = 0, ckptr = (uint32_t *)info, count = 0; count < info->config_size; |
178 | count++) |
179 | cksum += *ckptr++; |
180 | if (cksum) { |
181 | DPRINTF(("%s: nVidia checksum failed (0x%02x)\n" , |
182 | device_xname(sc->sc_dev), cksum)); |
183 | error = ESRCH; |
184 | goto out; |
185 | } |
186 | |
187 | /* |
188 | * Lookup or allocate a new array info structure for |
189 | * this array. Since nVidia raid information does not |
190 | * provides array# directory, we must count the number. |
191 | * The available traces are magic_1 and magic_2. |
192 | */ |
193 | for (anptr = &arrayno, count = 0; anptr->next; anptr = anptr->next, count++) { |
194 | if (anptr->magic1 == info->magic_1 && |
195 | anptr->magic2 == info->magic_2) |
196 | break; |
197 | } |
198 | if (anptr->next == NULL) { |
199 | /* new array */ |
200 | anptr->magic1 = info->magic_1; |
201 | anptr->magic2 = info->magic_2; |
202 | anptr->next = malloc(sizeof(arrayno), M_DEVBUF, M_WAITOK); |
203 | } |
204 | aai = ata_raid_get_array_info(ATA_RAID_TYPE_NVIDIA, count); |
205 | |
206 | aai->aai_status = AAI_S_READY; |
207 | if (info->status & NV_S_DEGRADED) |
208 | aai->aai_status |= AAI_S_DEGRADED; |
209 | |
210 | switch (info->type) { |
211 | case NV_T_RAID0: |
212 | aai->aai_level = AAI_L_RAID0; |
213 | break; |
214 | |
215 | case NV_T_RAID1: |
216 | aai->aai_level = AAI_L_RAID1; |
217 | break; |
218 | |
219 | case NV_T_RAID5: |
220 | aai->aai_level = AAI_L_RAID5; |
221 | break; |
222 | |
223 | case NV_T_RAID01: |
224 | aai->aai_level = AAI_L_RAID0 | AAI_L_RAID1; |
225 | break; |
226 | |
227 | case NV_T_SPAN: |
228 | aai->aai_level = AAI_L_SPAN; |
229 | break; |
230 | |
231 | default: |
232 | aprint_error_dev(sc->sc_dev, |
233 | "unknown nVidia type 0x%02x\n" , info->type); |
234 | error = EINVAL; |
235 | goto out; |
236 | } |
237 | |
238 | aai->aai_type = ATA_RAID_TYPE_NVIDIA; |
239 | aai->aai_interleave = info->stripe_sectors; |
240 | aai->aai_width = info->array_width; |
241 | |
242 | aai->aai_ndisks = info->total_disks; |
243 | aai->aai_capacity = info->total_sectors; |
244 | aai->aai_heads = 255; |
245 | aai->aai_sectors = 63; |
246 | aai->aai_cylinders = aai->aai_capacity / (aai->aai_heads * aai->aai_sectors); |
247 | aai->aai_offset = 0; |
248 | aai->aai_reserved = 2; |
249 | |
250 | adi = &aai->aai_disks[info->disk_number]; |
251 | adi->adi_dev = sc->sc_dev; |
252 | adi->adi_status = ADI_S_ONLINE | ADI_S_ASSIGNED; |
253 | adi->adi_sectors = aai->aai_capacity; |
254 | adi->adi_compsize = aai->aai_capacity / info->array_width; |
255 | |
256 | error = 0; |
257 | |
258 | out: |
259 | free(info, M_DEVBUF); |
260 | return (error); |
261 | } |
262 | |