1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2006 IronPort Systems
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 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include "opt_mfi.h"
33
34 #include <sys/param.h>
35 #include <sys/bio.h>
36 #include <sys/bus.h>
37 #include <sys/conf.h>
38 #include <sys/disk.h>
39 #include <sys/kernel.h>
40 #include <sys/lock.h>
41 #include <sys/malloc.h>
42 #include <sys/module.h>
43 #include <sys/mutex.h>
44 #include <sys/selinfo.h>
45 #include <sys/sysctl.h>
46 #include <sys/systm.h>
47 #include <sys/uio.h>
48
49 #include <geom/geom_disk.h>
50
51 #include <vm/vm.h>
52 #include <vm/pmap.h>
53
54 #include <machine/md_var.h>
55 #include <machine/bus.h>
56 #include <sys/rman.h>
57
58 #include <dev/mfi/mfireg.h>
59 #include <dev/mfi/mfi_ioctl.h>
60 #include <dev/mfi/mfivar.h>
61
62 static int mfi_disk_probe(device_t dev);
63 static int mfi_disk_attach(device_t dev);
64 static int mfi_disk_detach(device_t dev);
65
66 static disk_open_t mfi_disk_open;
67 static disk_close_t mfi_disk_close;
68 static disk_strategy_t mfi_disk_strategy;
69 static dumper_t mfi_disk_dump;
70
71 static devclass_t mfi_disk_devclass;
72
73 static device_method_t mfi_disk_methods[] = {
74 DEVMETHOD(device_probe, mfi_disk_probe),
75 DEVMETHOD(device_attach, mfi_disk_attach),
76 DEVMETHOD(device_detach, mfi_disk_detach),
77 { 0, 0 }
78 };
79
80 static driver_t mfi_disk_driver = {
81 "mfid",
82 mfi_disk_methods,
83 sizeof(struct mfi_disk)
84 };
85
86 DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
87
88 static int
mfi_disk_probe(device_t dev)89 mfi_disk_probe(device_t dev)
90 {
91
92 return (0);
93 }
94
95 static int
mfi_disk_attach(device_t dev)96 mfi_disk_attach(device_t dev)
97 {
98 struct mfi_disk *sc;
99 struct mfi_ld_info *ld_info;
100 struct mfi_disk_pending *ld_pend;
101 uint64_t sectors;
102 uint32_t secsize;
103 char *state;
104
105 sc = device_get_softc(dev);
106 ld_info = device_get_ivars(dev);
107
108 sc->ld_dev = dev;
109 sc->ld_id = ld_info->ld_config.properties.ld.v.target_id;
110 sc->ld_unit = device_get_unit(dev);
111 sc->ld_info = ld_info;
112 sc->ld_controller = device_get_softc(device_get_parent(dev));
113 sc->ld_flags = 0;
114
115 sectors = ld_info->size;
116 secsize = MFI_SECTOR_LEN;
117 mtx_lock(&sc->ld_controller->mfi_io_lock);
118 TAILQ_INSERT_TAIL(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
119 TAILQ_FOREACH(ld_pend, &sc->ld_controller->mfi_ld_pend_tqh,
120 ld_link) {
121 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_pend_tqh,
122 ld_pend, ld_link);
123 free(ld_pend, M_MFIBUF);
124 break;
125 }
126 mtx_unlock(&sc->ld_controller->mfi_io_lock);
127
128 switch (ld_info->ld_config.params.state) {
129 case MFI_LD_STATE_OFFLINE:
130 state = "offline";
131 break;
132 case MFI_LD_STATE_PARTIALLY_DEGRADED:
133 state = "partially degraded";
134 break;
135 case MFI_LD_STATE_DEGRADED:
136 state = "degraded";
137 break;
138 case MFI_LD_STATE_OPTIMAL:
139 state = "optimal";
140 break;
141 default:
142 state = "unknown";
143 break;
144 }
145
146 if ( strlen(ld_info->ld_config.properties.name) == 0 ) {
147 device_printf(dev,
148 "%juMB (%ju sectors) RAID volume (no label) is %s\n",
149 sectors / (1024 * 1024 / secsize), sectors, state);
150 } else {
151 device_printf(dev,
152 "%juMB (%ju sectors) RAID volume '%s' is %s\n",
153 sectors / (1024 * 1024 / secsize), sectors,
154 ld_info->ld_config.properties.name, state);
155 }
156
157 sc->ld_disk = disk_alloc();
158 sc->ld_disk->d_drv1 = sc;
159 sc->ld_disk->d_maxsize = min(sc->ld_controller->mfi_max_io * secsize,
160 (sc->ld_controller->mfi_max_sge - 1) * PAGE_SIZE);
161 sc->ld_disk->d_name = "mfid";
162 sc->ld_disk->d_open = mfi_disk_open;
163 sc->ld_disk->d_close = mfi_disk_close;
164 sc->ld_disk->d_strategy = mfi_disk_strategy;
165 sc->ld_disk->d_dump = mfi_disk_dump;
166 sc->ld_disk->d_unit = sc->ld_unit;
167 sc->ld_disk->d_sectorsize = secsize;
168 sc->ld_disk->d_mediasize = sectors * secsize;
169 if (sc->ld_disk->d_mediasize >= (1 * 1024 * 1024)) {
170 sc->ld_disk->d_fwheads = 255;
171 sc->ld_disk->d_fwsectors = 63;
172 } else {
173 sc->ld_disk->d_fwheads = 64;
174 sc->ld_disk->d_fwsectors = 32;
175 }
176 sc->ld_disk->d_flags = DISKFLAG_UNMAPPED_BIO;
177 disk_create(sc->ld_disk, DISK_VERSION);
178
179 return (0);
180 }
181
182 static int
mfi_disk_detach(device_t dev)183 mfi_disk_detach(device_t dev)
184 {
185 struct mfi_disk *sc;
186
187 sc = device_get_softc(dev);
188
189 mtx_lock(&sc->ld_controller->mfi_io_lock);
190 if (((sc->ld_disk->d_flags & DISKFLAG_OPEN) ||
191 (sc->ld_flags & MFI_DISK_FLAGS_OPEN)) &&
192 (sc->ld_controller->mfi_keep_deleted_volumes ||
193 sc->ld_controller->mfi_detaching)) {
194 mtx_unlock(&sc->ld_controller->mfi_io_lock);
195 return (EBUSY);
196 }
197 mtx_unlock(&sc->ld_controller->mfi_io_lock);
198
199 disk_destroy(sc->ld_disk);
200 mtx_lock(&sc->ld_controller->mfi_io_lock);
201 TAILQ_REMOVE(&sc->ld_controller->mfi_ld_tqh, sc, ld_link);
202 mtx_unlock(&sc->ld_controller->mfi_io_lock);
203 free(sc->ld_info, M_MFIBUF);
204 return (0);
205 }
206
207 static int
mfi_disk_open(struct disk * dp)208 mfi_disk_open(struct disk *dp)
209 {
210 struct mfi_disk *sc;
211 int error;
212
213 sc = dp->d_drv1;
214 mtx_lock(&sc->ld_controller->mfi_io_lock);
215 if (sc->ld_flags & MFI_DISK_FLAGS_DISABLED)
216 error = ENXIO;
217 else {
218 sc->ld_flags |= MFI_DISK_FLAGS_OPEN;
219 error = 0;
220 }
221 mtx_unlock(&sc->ld_controller->mfi_io_lock);
222
223 return (error);
224 }
225
226 static int
mfi_disk_close(struct disk * dp)227 mfi_disk_close(struct disk *dp)
228 {
229 struct mfi_disk *sc;
230
231 sc = dp->d_drv1;
232 mtx_lock(&sc->ld_controller->mfi_io_lock);
233 sc->ld_flags &= ~MFI_DISK_FLAGS_OPEN;
234 mtx_unlock(&sc->ld_controller->mfi_io_lock);
235
236 return (0);
237 }
238
239 int
mfi_disk_disable(struct mfi_disk * sc)240 mfi_disk_disable(struct mfi_disk *sc)
241 {
242
243 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
244 if (sc->ld_flags & MFI_DISK_FLAGS_OPEN) {
245 if (sc->ld_controller->mfi_delete_busy_volumes)
246 return (0);
247 device_printf(sc->ld_dev, "Unable to delete busy ld device\n");
248 return (EBUSY);
249 }
250 sc->ld_flags |= MFI_DISK_FLAGS_DISABLED;
251 return (0);
252 }
253
254 void
mfi_disk_enable(struct mfi_disk * sc)255 mfi_disk_enable(struct mfi_disk *sc)
256 {
257
258 mtx_assert(&sc->ld_controller->mfi_io_lock, MA_OWNED);
259 sc->ld_flags &= ~MFI_DISK_FLAGS_DISABLED;
260 }
261
262 static void
mfi_disk_strategy(struct bio * bio)263 mfi_disk_strategy(struct bio *bio)
264 {
265 struct mfi_disk *sc;
266 struct mfi_softc *controller;
267
268 sc = bio->bio_disk->d_drv1;
269
270 if (sc == NULL) {
271 bio->bio_error = EINVAL;
272 bio->bio_flags |= BIO_ERROR;
273 bio->bio_resid = bio->bio_bcount;
274 biodone(bio);
275 return;
276 }
277
278 controller = sc->ld_controller;
279 if (controller->adpreset) {
280 bio->bio_error = EBUSY;
281 return;
282 }
283
284 if (controller->hw_crit_error) {
285 bio->bio_error = EBUSY;
286 return;
287 }
288
289 if (controller->issuepend_done == 0) {
290 bio->bio_error = EBUSY;
291 return;
292 }
293
294 bio->bio_driver1 = (void *)(uintptr_t)sc->ld_id;
295 /* Mark it as LD IO */
296 bio->bio_driver2 = (void *)MFI_LD_IO;
297 mtx_lock(&controller->mfi_io_lock);
298 mfi_enqueue_bio(controller, bio);
299 mfi_startio(controller);
300 mtx_unlock(&controller->mfi_io_lock);
301 return;
302 }
303
304 void
mfi_disk_complete(struct bio * bio)305 mfi_disk_complete(struct bio *bio)
306 {
307 struct mfi_disk *sc;
308 struct mfi_frame_header *hdr;
309
310 sc = bio->bio_disk->d_drv1;
311 hdr = bio->bio_driver1;
312
313 if (bio->bio_flags & BIO_ERROR) {
314 bio->bio_resid = bio->bio_bcount;
315 if (bio->bio_error == 0)
316 bio->bio_error = EIO;
317 disk_err(bio, "hard error", -1, 1);
318 } else {
319 bio->bio_resid = 0;
320 }
321 biodone(bio);
322 }
323
324 static int
mfi_disk_dump(void * arg,void * virt,vm_offset_t phys,off_t offset,size_t len)325 mfi_disk_dump(void *arg, void *virt, vm_offset_t phys, off_t offset, size_t len)
326 {
327 struct mfi_disk *sc;
328 struct mfi_softc *parent_sc;
329 struct disk *dp;
330 int error;
331
332 dp = arg;
333 sc = dp->d_drv1;
334 parent_sc = sc->ld_controller;
335
336 if (len > 0) {
337 if ((error = mfi_dump_blocks(parent_sc, sc->ld_id, offset /
338 MFI_SECTOR_LEN, virt, len)) != 0)
339 return (error);
340 } else {
341 /* mfi_sync_cache(parent_sc, sc->ld_id); */
342 }
343
344 return (0);
345 }
346