FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfi_disk.c
1 /*-
2 * Copyright (c) 2006 IronPort Systems
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include "opt_mfi.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/selinfo.h>
36 #include <sys/module.h>
37 #include <sys/malloc.h>
38 #include <sys/sysctl.h>
39 #include <sys/uio.h>
40
41 #include <sys/bio.h>
42 #include <sys/bus.h>
43 #include <sys/conf.h>
44 #include <sys/disk.h>
45 #include <geom/geom_disk.h>
46
47 #include <vm/vm.h>
48 #include <vm/pmap.h>
49
50 #include <machine/md_var.h>
51 #include <machine/bus.h>
52 #include <sys/rman.h>
53
54 #include <dev/mfi/mfireg.h>
55 #include <dev/mfi/mfi_ioctl.h>
56 #include <dev/mfi/mfivar.h>
57
58 static int mfi_disk_probe(device_t dev);
59 static int mfi_disk_attach(device_t dev);
60 static int mfi_disk_detach(device_t dev);
61
62 static disk_open_t mfi_disk_open;
63 static disk_close_t mfi_disk_close;
64 static disk_strategy_t mfi_disk_strategy;
65 static dumper_t mfi_disk_dump;
66
67 static devclass_t mfi_disk_devclass;
68
69 static device_method_t mfi_disk_methods[] = {
70 DEVMETHOD(device_probe, mfi_disk_probe),
71 DEVMETHOD(device_attach, mfi_disk_attach),
72 DEVMETHOD(device_detach, mfi_disk_detach),
73 { 0, 0 }
74 };
75
76 static driver_t mfi_disk_driver = {
77 "mfid",
78 mfi_disk_methods,
79 sizeof(struct mfi_disk)
80 };
81
82 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
83
84 static int
85 mfi_disk_probe(device_t dev)
86 {
87
88 return (0);
89 }
90
91 static int
92 mfi_disk_attach(device_t dev)
93 {
94 struct mfi_disk *sc;
95 struct mfi_ld_info *ld_info;
96 uint64_t sectors;
97 uint32_t secsize;
98 char *state;
99
100 sc = device_get_softc(dev);
101 ld_info = device_get_ivars(dev);
102
103 sc->ld_dev = dev;
104 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
105 sc->ld_unit = device_get_unit(dev);
106 sc->ld_info = ld_info;
107 sc->ld_controller = device_get_softc(device_get_parent(dev));
108 sc->ld_flags = 0;
109
110 sectors = ld_info->size;
111 secsize = MFI_SECTOR_LEN;
112 mtx_lock(&sc->ld_controller->mfi_io_lock);
113 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
114 mtx_unlock(&sc->ld_controller->mfi_io_lock);
115
116 switch (ld_info->ld_config.params.state) {
117 case MFI_LD_STATE_OFFLINE:
118 state = "offline";
119 break;
120 case MFI_LD_STATE_PARTIALLY_DEGRADED:
121 state = "partially degraded";
122 break;
123 case MFI_LD_STATE_DEGRADED:
124 state = "degraded";
125 break;
126 case MFI_LD_STATE_OPTIMAL:
127 state = "optimal";
128 break;
129 default:
130 state = "unknown";
131 break;
132 }
133 device_printf(dev, "%juMB (%ju sectors) RAID volume '%s' is %s\n",
134 sectors / (1024 * 1024 / secsize), sectors,
135 ld_info->ld_config.properties.name,
136 state);
137
138 sc->ld_disk = disk_alloc();
139 sc->ld_disk->d_drv1 = sc;
140 sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize,
141 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE);
142 sc->ld_disk->d_name = "mfid";
143 sc->ld_disk->d_open = mfi_disk_open;
144 sc->ld_disk->d_close = mfi_disk_close;
145 sc->ld_disk->d_strategy = mfi_disk_strategy;
146 sc->ld_disk->d_dump = mfi_disk_dump;
147 sc->ld_disk->d_unit = sc->ld_unit;
148 sc->ld_disk->d_sectorsize = secsize;
149 sc->ld_disk->d_mediasize = sectors * secsize;
150 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
151 sc->ld_disk->d_fwheads = 255;
152 sc->ld_disk->d_fwsectors = 63;
153 } else {
154 sc->ld_disk->d_fwheads = 64;
155 sc->ld_disk->d_fwsectors = 32;
156 }
157 disk_create(sc->ld_disk, DISK_VERSION);
158
159 return (0);
160 }
161
162 static int
163 mfi_disk_detach(device_t dev)
164 {
165 struct mfi_disk *sc;
166
167 sc = device_get_softc(dev);
168
169 mtx_lock(&sc->ld_controller->mfi_io_lock);
170 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
171 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) &&
172 (sc->ld_controller->mfi_keep_deleted_volumes ||
173 sc->ld_controller->mfi_detaching)) {
174 mtx_unlock(&sc->ld_controller->mfi_io_lock);
175 return (EBUSY);
176 }
177 mtx_unlock(&sc->ld_controller->mfi_io_lock);
178
179 disk_destroy(sc->ld_disk);
180 mtx_lock(&sc->ld_controller->mfi_io_lock);
181 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
182 mtx_unlock(&sc->ld_controller->mfi_io_lock);
183 free(sc->ld_info, M_MFIBUF);
184 return (0);
185 }
186
187 static int
188 mfi_disk_open(struct disk *dp)
189 {
190 struct mfi_disk *sc;
191 int error;
192
193 sc = dp->d_drv1;
194 mtx_lock(&sc->ld_controller->mfi_io_lock);
195 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED)
196 error = ENXIO;
197 else {
198 sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
199 error = 0;
200 }
201 mtx_unlock(&sc->ld_controller->mfi_io_lock);
202
203 return (error);
204 }
205
206 static int
207 mfi_disk_close(struct disk *dp)
208 {
209 struct mfi_disk *sc;
210
211 sc = dp->d_drv1;
212 mtx_lock(&sc->ld_controller->mfi_io_lock);
213 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
214 mtx_unlock(&sc->ld_controller->mfi_io_lock);
215
216 return (0);
217 }
218
219 int
220 mfi_disk_disable(struct mfi_disk *sc)
221 {
222
223 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
224 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) {
225 if (sc->ld_controller->mfi_delete_busy_volumes)
226 return (0);
227 device_printf(sc->ld_dev, "Unable to delete busy ld device\n");
228 return (EBUSY);
229 }
230 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED;
231 return (0);
232 }
233
234 void
235 mfi_disk_enable(struct mfi_disk *sc)
236 {
237
238 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
239 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED;
240 }
241
242 static void
243 mfi_disk_strategy(struct bio *bio)
244 {
245 struct mfi_disk *sc;
246 struct mfi_softc *controller;
247
248 sc = bio->bio_disk->d_drv1;
249 controller = sc->ld_controller;
250
251 if (sc == NULL) {
252 bio->bio_error = EINVAL;
253 bio->bio_flags |= BIO_ERROR;
254 bio->bio_resid = bio->bio_bcount;
255 biodone(bio);
256 return;
257 }
258
259 if (controller->adpreset) {
260 bio->bio_error = EBUSY;
261 return;
262 }
263
264 if (controller->hw_crit_error) {
265 bio->bio_error = EBUSY;
266 return;
267 }
268
269 if (controller->issuepend_done == 0) {
270 bio->bio_error = EBUSY;
271 return;
272 }
273
274 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
275 /* Mark it as LD IO */
276 bio->bio_driver2 = (void *)MFI_LD_IO;
277 mtx_lock(&controller->mfi_io_lock);
278 mfi_enqueue_bio(controller, bio);
279 mfi_startio(controller);
280 mtx_unlock(&controller->mfi_io_lock);
281 return;
282 }
283
284 void
285 mfi_disk_complete(struct bio *bio)
286 {
287 struct mfi_disk *sc;
288 struct mfi_frame_header *hdr;
289
290 sc = bio->bio_disk->d_drv1;
291 hdr = bio->bio_driver1;
292
293 if (bio->bio_flags & BIO_ERROR) {
294 bio->bio_resid = bio->bio_bcount;
295 if (bio->bio_error == 0)
296 bio->bio_error = EIO;
297 disk_err(bio, "hard error", -1, 1);
298 } else {
299 bio->bio_resid = 0;
300 }
301 biodone(bio);
302 }
303
304 static int
305 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
306 {
307 struct mfi_disk *sc;
308 struct mfi_softc *parent_sc;
309 struct disk *dp;
310 int error;
311
312 dp = arg;
313 sc = dp->d_drv1;
314 parent_sc = sc->ld_controller;
315
316 if (len > 0) {
317 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
318 MFI_SECTOR_LEN, virt, len)) != 0)
319 return (error);
320 } else {
321 /* mfi_sync_cache(parent_sc, sc->ld_id); */
322 }
323
324 return (0);
325 }
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