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 struct mfi_disk_pending *ld_pend;
97 uint64_t sectors;
98 uint32_t secsize;
99 char *state;
100
101 sc = device_get_softc(dev);
102 ld_info = device_get_ivars(dev);
103
104 sc->ld_dev = dev;
105 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
106 sc->ld_unit = device_get_unit(dev);
107 sc->ld_info = ld_info;
108 sc->ld_controller = device_get_softc(device_get_parent(dev));
109 sc->ld_flags = 0;
110
111 sectors = ld_info->size;
112 secsize = MFI_SECTOR_LEN;
113 mtx_lock(&sc->ld_controller->mfi_io_lock);
114 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
115 TAILQ_FOREACH(ld_pend, &sc->ld_controller->mfi_ld_pend_tqh,
116 ld_link) {
117 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_pend_tqh,
118 ld_pend, ld_link);
119 free(ld_pend, M_MFIBUF);
120 break;
121 }
122 mtx_unlock(&sc->ld_controller->mfi_io_lock);
123
124 switch (ld_info->ld_config.params.state) {
125 case MFI_LD_STATE_OFFLINE:
126 state = "offline";
127 break;
128 case MFI_LD_STATE_PARTIALLY_DEGRADED:
129 state = "partially degraded";
130 break;
131 case MFI_LD_STATE_DEGRADED:
132 state = "degraded";
133 break;
134 case MFI_LD_STATE_OPTIMAL:
135 state = "optimal";
136 break;
137 default:
138 state = "unknown";
139 break;
140 }
141
142 if ( strlen(ld_info->ld_config.properties.name) == 0 ) {
143 device_printf(dev,
144 "%juMB (%ju sectors) RAID volume (no label) is %s\n",
145 sectors / (1024 * 1024 / secsize), sectors, state);
146 } else {
147 device_printf(dev,
148 "%juMB (%ju sectors) RAID volume '%s' is %s\n",
149 sectors / (1024 * 1024 / secsize), sectors,
150 ld_info->ld_config.properties.name, state);
151 }
152
153 sc->ld_disk = disk_alloc();
154 sc->ld_disk->d_drv1 = sc;
155 sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize,
156 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE);
157 sc->ld_disk->d_name = "mfid";
158 sc->ld_disk->d_open = mfi_disk_open;
159 sc->ld_disk->d_close = mfi_disk_close;
160 sc->ld_disk->d_strategy = mfi_disk_strategy;
161 sc->ld_disk->d_dump = mfi_disk_dump;
162 sc->ld_disk->d_unit = sc->ld_unit;
163 sc->ld_disk->d_sectorsize = secsize;
164 sc->ld_disk->d_mediasize = sectors * secsize;
165 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
166 sc->ld_disk->d_fwheads = 255;
167 sc->ld_disk->d_fwsectors = 63;
168 } else {
169 sc->ld_disk->d_fwheads = 64;
170 sc->ld_disk->d_fwsectors = 32;
171 }
172 sc->ld_disk->d_flags = DISKFLAG_UNMAPPED_BIO;
173 disk_create(sc->ld_disk, DISK_VERSION);
174
175 return (0);
176 }
177
178 static int
179 mfi_disk_detach(device_t dev)
180 {
181 struct mfi_disk *sc;
182
183 sc = device_get_softc(dev);
184
185 mtx_lock(&sc->ld_controller->mfi_io_lock);
186 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
187 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) &&
188 (sc->ld_controller->mfi_keep_deleted_volumes ||
189 sc->ld_controller->mfi_detaching)) {
190 mtx_unlock(&sc->ld_controller->mfi_io_lock);
191 return (EBUSY);
192 }
193 mtx_unlock(&sc->ld_controller->mfi_io_lock);
194
195 disk_destroy(sc->ld_disk);
196 mtx_lock(&sc->ld_controller->mfi_io_lock);
197 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
198 mtx_unlock(&sc->ld_controller->mfi_io_lock);
199 free(sc->ld_info, M_MFIBUF);
200 return (0);
201 }
202
203 static int
204 mfi_disk_open(struct disk *dp)
205 {
206 struct mfi_disk *sc;
207 int error;
208
209 sc = dp->d_drv1;
210 mtx_lock(&sc->ld_controller->mfi_io_lock);
211 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED)
212 error = ENXIO;
213 else {
214 sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
215 error = 0;
216 }
217 mtx_unlock(&sc->ld_controller->mfi_io_lock);
218
219 return (error);
220 }
221
222 static int
223 mfi_disk_close(struct disk *dp)
224 {
225 struct mfi_disk *sc;
226
227 sc = dp->d_drv1;
228 mtx_lock(&sc->ld_controller->mfi_io_lock);
229 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
230 mtx_unlock(&sc->ld_controller->mfi_io_lock);
231
232 return (0);
233 }
234
235 int
236 mfi_disk_disable(struct mfi_disk *sc)
237 {
238
239 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
240 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) {
241 if (sc->ld_controller->mfi_delete_busy_volumes)
242 return (0);
243 device_printf(sc->ld_dev, "Unable to delete busy ld device\n");
244 return (EBUSY);
245 }
246 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED;
247 return (0);
248 }
249
250 void
251 mfi_disk_enable(struct mfi_disk *sc)
252 {
253
254 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
255 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED;
256 }
257
258 static void
259 mfi_disk_strategy(struct bio *bio)
260 {
261 struct mfi_disk *sc;
262 struct mfi_softc *controller;
263
264 sc = bio->bio_disk->d_drv1;
265
266 if (sc == NULL) {
267 bio->bio_error = EINVAL;
268 bio->bio_flags |= BIO_ERROR;
269 bio->bio_resid = bio->bio_bcount;
270 biodone(bio);
271 return;
272 }
273
274 controller = sc->ld_controller;
275 if (controller->adpreset) {
276 bio->bio_error = EBUSY;
277 return;
278 }
279
280 if (controller->hw_crit_error) {
281 bio->bio_error = EBUSY;
282 return;
283 }
284
285 if (controller->issuepend_done == 0) {
286 bio->bio_error = EBUSY;
287 return;
288 }
289
290 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
291 /* Mark it as LD IO */
292 bio->bio_driver2 = (void *)MFI_LD_IO;
293 mtx_lock(&controller->mfi_io_lock);
294 mfi_enqueue_bio(controller, bio);
295 mfi_startio(controller);
296 mtx_unlock(&controller->mfi_io_lock);
297 return;
298 }
299
300 void
301 mfi_disk_complete(struct bio *bio)
302 {
303 struct mfi_disk *sc;
304 struct mfi_frame_header *hdr;
305
306 sc = bio->bio_disk->d_drv1;
307 hdr = bio->bio_driver1;
308
309 if (bio->bio_flags & BIO_ERROR) {
310 bio->bio_resid = bio->bio_bcount;
311 if (bio->bio_error == 0)
312 bio->bio_error = EIO;
313 disk_err(bio, "hard error", -1, 1);
314 } else {
315 bio->bio_resid = 0;
316 }
317 biodone(bio);
318 }
319
320 static int
321 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
322 {
323 struct mfi_disk *sc;
324 struct mfi_softc *parent_sc;
325 struct disk *dp;
326 int error;
327
328 dp = arg;
329 sc = dp->d_drv1;
330 parent_sc = sc->ld_controller;
331
332 if (len > 0) {
333 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
334 MFI_SECTOR_LEN, virt, len)) != 0)
335 return (error);
336 } else {
337 /* mfi_sync_cache(parent_sc, sc->ld_id); */
338 }
339
340 return (0);
341 }
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