1/*-
2 * Copyright (C) 2012-2013 Intel Corporation
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: stable/10/sys/dev/nvd/nvd.c 285915 2015-07-27 15:32:37Z jimharris $");
29
30#include <sys/param.h>
31#include <sys/bio.h>
32#include <sys/kernel.h>
33#include <sys/malloc.h>
34#include <sys/module.h>
35#include <sys/systm.h>
36#include <sys/taskqueue.h>
37
38#include <geom/geom.h>
39#include <geom/geom_disk.h>
40
41#include <dev/nvme/nvme.h>
42
43#define NVD_STR "nvd"
44
45struct nvd_disk;
46
47static disk_ioctl_t nvd_ioctl;
48static disk_strategy_t nvd_strategy;
49
50static void *nvd_new_disk(struct nvme_namespace *ns, void *ctrlr);
51static void destroy_geom_disk(struct nvd_disk *ndisk);
52
53static void *nvd_new_controller(struct nvme_controller *ctrlr);
54static void nvd_controller_fail(void *ctrlr);
55
56static int nvd_load(void);
57static void nvd_unload(void);
58
59MALLOC_DEFINE(M_NVD, "nvd", "nvd(4) allocations");
60
61struct nvme_consumer *consumer_handle;
62
63struct nvd_disk {
64
65 struct bio_queue_head bioq;
66 struct task bioqtask;
67 struct mtx bioqlock;
68
69 struct disk *disk;
70 struct taskqueue *tq;
71 struct nvme_namespace *ns;
72
73 uint32_t cur_depth;
74
75 TAILQ_ENTRY(nvd_disk) global_tailq;
76 TAILQ_ENTRY(nvd_disk) ctrlr_tailq;
77};
78
79struct nvd_controller {
80
81 TAILQ_ENTRY(nvd_controller) tailq;
82 TAILQ_HEAD(, nvd_disk) disk_head;
83};
84
85static TAILQ_HEAD(, nvd_controller) ctrlr_head;
86static TAILQ_HEAD(disk_list, nvd_disk) disk_head;
87
88static int nvd_modevent(module_t mod, int type, void *arg)
89{
90 int error = 0;
91
92 switch (type) {
93 case MOD_LOAD:
94 error = nvd_load();
95 break;
96 case MOD_UNLOAD:
97 nvd_unload();
98 break;
99 default:
100 break;
101 }
102
103 return (error);
104}
105
106moduledata_t nvd_mod = {
107 NVD_STR,
108 (modeventhand_t)nvd_modevent,
109 0
110};
111
112DECLARE_MODULE(nvd, nvd_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
113MODULE_VERSION(nvd, 1);
114MODULE_DEPEND(nvd, nvme, 1, 1, 1);
115
116static int
117nvd_load()
118{
119
120 TAILQ_INIT(&ctrlr_head);
121 TAILQ_INIT(&disk_head);
122
123 consumer_handle = nvme_register_consumer(nvd_new_disk,
124 nvd_new_controller, NULL, nvd_controller_fail);
125
126 return (consumer_handle != NULL ? 0 : -1);
127}
128
129static void
130nvd_unload()
131{
132 struct nvd_controller *ctrlr;
133 struct nvd_disk *disk;
134
135 while (!TAILQ_EMPTY(&ctrlr_head)) {
136 ctrlr = TAILQ_FIRST(&ctrlr_head);
137 TAILQ_REMOVE(&ctrlr_head, ctrlr, tailq);
138 free(ctrlr, M_NVD);
139 }
140
141 while (!TAILQ_EMPTY(&disk_head)) {
142 disk = TAILQ_FIRST(&disk_head);
143 TAILQ_REMOVE(&disk_head, disk, global_tailq);
144 destroy_geom_disk(disk);
145 free(disk, M_NVD);
146 }
147
148 nvme_unregister_consumer(consumer_handle);
149}
150
151static void
152nvd_strategy(struct bio *bp)
153{
154 struct nvd_disk *ndisk;
155
156 ndisk = (struct nvd_disk *)bp->bio_disk->d_drv1;
157
158 mtx_lock(&ndisk->bioqlock);
159 bioq_insert_tail(&ndisk->bioq, bp);
160 mtx_unlock(&ndisk->bioqlock);
161 taskqueue_enqueue(ndisk->tq, &ndisk->bioqtask);
162}
163
164static int
165nvd_ioctl(struct disk *ndisk, u_long cmd, void *data, int fflag,
166 struct thread *td)
167{
168 int ret = 0;
169
170 switch (cmd) {
171 default:
172 ret = EIO;
173 }
174
175 return (ret);
176}
177
178static void
179nvd_done(void *arg, const struct nvme_completion *cpl)
180{
181 struct bio *bp;
182 struct nvd_disk *ndisk;
183
184 bp = (struct bio *)arg;
185
186 ndisk = bp->bio_disk->d_drv1;
187
188 atomic_add_int(&ndisk->cur_depth, -1);
189
190 biodone(bp);
191}
192
193static void
194nvd_bioq_process(void *arg, int pending)
195{
196 struct nvd_disk *ndisk = arg;
197 struct bio *bp;
198 int err;
199
200 for (;;) {
201 mtx_lock(&ndisk->bioqlock);
202 bp = bioq_takefirst(&ndisk->bioq);
203 mtx_unlock(&ndisk->bioqlock);
204 if (bp == NULL)
205 break;
206
207#ifdef BIO_ORDERED
208 /*
209 * BIO_ORDERED flag dictates that all outstanding bios
210 * must be completed before processing the bio with
211 * BIO_ORDERED flag set.
212 */
213 if (bp->bio_flags & BIO_ORDERED) {
214 while (ndisk->cur_depth > 0) {
215 pause("nvd flush", 1);
216 }
217 }
218#endif
219
220 bp->bio_driver1 = NULL;
221 atomic_add_int(&ndisk->cur_depth, 1);
222
223 err = nvme_ns_bio_process(ndisk->ns, bp, nvd_done);
224
225 if (err) {
226 atomic_add_int(&ndisk->cur_depth, -1);
227 bp->bio_error = err;
228 bp->bio_flags |= BIO_ERROR;
229 bp->bio_resid = bp->bio_bcount;
230 biodone(bp);
231 }
232
233#ifdef BIO_ORDERED
234 /*
235 * BIO_ORDERED flag dictates that the bio with BIO_ORDERED
236 * flag set must be completed before proceeding with
237 * additional bios.
238 */
239 if (bp->bio_flags & BIO_ORDERED) {
240 while (ndisk->cur_depth > 0) {
241 pause("nvd flush", 1);
242 }
243 }
244#endif
245 }
246}
247
248static void *
249nvd_new_controller(struct nvme_controller *ctrlr)
250{
251 struct nvd_controller *nvd_ctrlr;
252
253 nvd_ctrlr = malloc(sizeof(struct nvd_controller), M_NVD,
254 M_ZERO | M_WAITOK);
255
256 TAILQ_INIT(&nvd_ctrlr->disk_head);
257 TAILQ_INSERT_TAIL(&ctrlr_head, nvd_ctrlr, tailq);
258
259 return (nvd_ctrlr);
260}
261
262static void *
263nvd_new_disk(struct nvme_namespace *ns, void *ctrlr_arg)
264{
265 uint8_t descr[NVME_MODEL_NUMBER_LENGTH+1];
266 struct nvd_disk *ndisk;
267 struct disk *disk;
268 struct nvd_controller *ctrlr = ctrlr_arg;
269
270 ndisk = malloc(sizeof(struct nvd_disk), M_NVD, M_ZERO | M_WAITOK);
271
272 disk = disk_alloc();
273 disk->d_strategy = nvd_strategy;
274 disk->d_ioctl = nvd_ioctl;
275 disk->d_name = NVD_STR;
276 disk->d_drv1 = ndisk;
277
278 disk->d_maxsize = nvme_ns_get_max_io_xfer_size(ns);
279 disk->d_sectorsize = nvme_ns_get_sector_size(ns);
280 disk->d_mediasize = (off_t)nvme_ns_get_size(ns);
281 disk->d_delmaxsize = (off_t)nvme_ns_get_size(ns);
282
283 if (TAILQ_EMPTY(&disk_head))
284 disk->d_unit = 0;
285 else
286 disk->d_unit =
287 TAILQ_LAST(&disk_head, disk_list)->disk->d_unit + 1;
288
289 disk->d_flags = 0;
290
291 if (nvme_ns_get_flags(ns) & NVME_NS_DEALLOCATE_SUPPORTED)
292 disk->d_flags |= DISKFLAG_CANDELETE;
293
294 if (nvme_ns_get_flags(ns) & NVME_NS_FLUSH_SUPPORTED)
295 disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
296
297/* ifdef used here to ease porting to stable branches at a later point. */
298#ifdef DISKFLAG_UNMAPPED_BIO
299 disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
300#endif
301
302 /*
303 * d_ident and d_descr are both far bigger than the length of either
304 * the serial or model number strings.
305 */
306 nvme_strvis(disk->d_ident, nvme_ns_get_serial_number(ns),
307 sizeof(disk->d_ident), NVME_SERIAL_NUMBER_LENGTH);
308
309 nvme_strvis(descr, nvme_ns_get_model_number(ns), sizeof(descr),
310 NVME_MODEL_NUMBER_LENGTH);
311
312#if __FreeBSD_version >= 900034
313 strlcpy(disk->d_descr, descr, sizeof(descr));
314#endif
315
316 ndisk->ns = ns;
317 ndisk->disk = disk;
318 ndisk->cur_depth = 0;
319
320 mtx_init(&ndisk->bioqlock, "NVD bioq lock", NULL, MTX_DEF);
321 bioq_init(&ndisk->bioq);
322
323 TASK_INIT(&ndisk->bioqtask, 0, nvd_bioq_process, ndisk);
324 ndisk->tq = taskqueue_create("nvd_taskq", M_WAITOK,
325 taskqueue_thread_enqueue, &ndisk->tq);
326 taskqueue_start_threads(&ndisk->tq, 1, PI_DISK, "nvd taskq");
327
328 TAILQ_INSERT_TAIL(&disk_head, ndisk, global_tailq);
329 TAILQ_INSERT_TAIL(&ctrlr->disk_head, ndisk, ctrlr_tailq);
330
331 disk_create(disk, DISK_VERSION);
332
333 printf(NVD_STR"%u: <%s> NVMe namespace\n", disk->d_unit, descr);
334 printf(NVD_STR"%u: %juMB (%ju %u byte sectors)\n", disk->d_unit,
335 (uintmax_t)disk->d_mediasize / (1024*1024),
336 (uintmax_t)disk->d_mediasize / disk->d_sectorsize,
337 disk->d_sectorsize);
338
339 return (NULL);
340}
341
342static void
343destroy_geom_disk(struct nvd_disk *ndisk)
344{
345 struct bio *bp;
346 struct disk *disk;
347 uint32_t unit;
348 int cnt = 0;
349
350 disk = ndisk->disk;
351 unit = disk->d_unit;
352 taskqueue_free(ndisk->tq);
353
354 disk_destroy(ndisk->disk);
355
356 mtx_lock(&ndisk->bioqlock);
357 for (;;) {
358 bp = bioq_takefirst(&ndisk->bioq);
359 if (bp == NULL)
360 break;
361 bp->bio_error = EIO;
362 bp->bio_flags |= BIO_ERROR;
363 bp->bio_resid = bp->bio_bcount;
364 cnt++;
365 biodone(bp);
366 }
367
368 printf(NVD_STR"%u: lost device - %d outstanding\n", unit, cnt);
369 printf(NVD_STR"%u: removing device entry\n", unit);
370
371 mtx_unlock(&ndisk->bioqlock);
372
373 mtx_destroy(&ndisk->bioqlock);
374}
375
376static void
377nvd_controller_fail(void *ctrlr_arg)
378{
379 struct nvd_controller *ctrlr = ctrlr_arg;
380 struct nvd_disk *disk;
381
382 while (!TAILQ_EMPTY(&ctrlr->disk_head)) {
383 disk = TAILQ_FIRST(&ctrlr->disk_head);
384 TAILQ_REMOVE(&disk_head, disk, global_tailq);
385 TAILQ_REMOVE(&ctrlr->disk_head, disk, ctrlr_tailq);
386 destroy_geom_disk(disk);
387 free(disk, M_NVD);
388 }
389
390 TAILQ_REMOVE(&ctrlr_head, ctrlr, tailq);
391 free(ctrlr, M_NVD);
392}
393
2 * Copyright (C) 2012-2013 Intel Corporation
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: stable/10/sys/dev/nvd/nvd.c 285915 2015-07-27 15:32:37Z jimharris $");
29
30#include <sys/param.h>
31#include <sys/bio.h>
32#include <sys/kernel.h>
33#include <sys/malloc.h>
34#include <sys/module.h>
35#include <sys/systm.h>
36#include <sys/taskqueue.h>
37
38#include <geom/geom.h>
39#include <geom/geom_disk.h>
40
41#include <dev/nvme/nvme.h>
42
43#define NVD_STR "nvd"
44
45struct nvd_disk;
46
47static disk_ioctl_t nvd_ioctl;
48static disk_strategy_t nvd_strategy;
49
50static void *nvd_new_disk(struct nvme_namespace *ns, void *ctrlr);
51static void destroy_geom_disk(struct nvd_disk *ndisk);
52
53static void *nvd_new_controller(struct nvme_controller *ctrlr);
54static void nvd_controller_fail(void *ctrlr);
55
56static int nvd_load(void);
57static void nvd_unload(void);
58
59MALLOC_DEFINE(M_NVD, "nvd", "nvd(4) allocations");
60
61struct nvme_consumer *consumer_handle;
62
63struct nvd_disk {
64
65 struct bio_queue_head bioq;
66 struct task bioqtask;
67 struct mtx bioqlock;
68
69 struct disk *disk;
70 struct taskqueue *tq;
71 struct nvme_namespace *ns;
72
73 uint32_t cur_depth;
74
75 TAILQ_ENTRY(nvd_disk) global_tailq;
76 TAILQ_ENTRY(nvd_disk) ctrlr_tailq;
77};
78
79struct nvd_controller {
80
81 TAILQ_ENTRY(nvd_controller) tailq;
82 TAILQ_HEAD(, nvd_disk) disk_head;
83};
84
85static TAILQ_HEAD(, nvd_controller) ctrlr_head;
86static TAILQ_HEAD(disk_list, nvd_disk) disk_head;
87
88static int nvd_modevent(module_t mod, int type, void *arg)
89{
90 int error = 0;
91
92 switch (type) {
93 case MOD_LOAD:
94 error = nvd_load();
95 break;
96 case MOD_UNLOAD:
97 nvd_unload();
98 break;
99 default:
100 break;
101 }
102
103 return (error);
104}
105
106moduledata_t nvd_mod = {
107 NVD_STR,
108 (modeventhand_t)nvd_modevent,
109 0
110};
111
112DECLARE_MODULE(nvd, nvd_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
113MODULE_VERSION(nvd, 1);
114MODULE_DEPEND(nvd, nvme, 1, 1, 1);
115
116static int
117nvd_load()
118{
119
120 TAILQ_INIT(&ctrlr_head);
121 TAILQ_INIT(&disk_head);
122
123 consumer_handle = nvme_register_consumer(nvd_new_disk,
124 nvd_new_controller, NULL, nvd_controller_fail);
125
126 return (consumer_handle != NULL ? 0 : -1);
127}
128
129static void
130nvd_unload()
131{
132 struct nvd_controller *ctrlr;
133 struct nvd_disk *disk;
134
135 while (!TAILQ_EMPTY(&ctrlr_head)) {
136 ctrlr = TAILQ_FIRST(&ctrlr_head);
137 TAILQ_REMOVE(&ctrlr_head, ctrlr, tailq);
138 free(ctrlr, M_NVD);
139 }
140
141 while (!TAILQ_EMPTY(&disk_head)) {
142 disk = TAILQ_FIRST(&disk_head);
143 TAILQ_REMOVE(&disk_head, disk, global_tailq);
144 destroy_geom_disk(disk);
145 free(disk, M_NVD);
146 }
147
148 nvme_unregister_consumer(consumer_handle);
149}
150
151static void
152nvd_strategy(struct bio *bp)
153{
154 struct nvd_disk *ndisk;
155
156 ndisk = (struct nvd_disk *)bp->bio_disk->d_drv1;
157
158 mtx_lock(&ndisk->bioqlock);
159 bioq_insert_tail(&ndisk->bioq, bp);
160 mtx_unlock(&ndisk->bioqlock);
161 taskqueue_enqueue(ndisk->tq, &ndisk->bioqtask);
162}
163
164static int
165nvd_ioctl(struct disk *ndisk, u_long cmd, void *data, int fflag,
166 struct thread *td)
167{
168 int ret = 0;
169
170 switch (cmd) {
171 default:
172 ret = EIO;
173 }
174
175 return (ret);
176}
177
178static void
179nvd_done(void *arg, const struct nvme_completion *cpl)
180{
181 struct bio *bp;
182 struct nvd_disk *ndisk;
183
184 bp = (struct bio *)arg;
185
186 ndisk = bp->bio_disk->d_drv1;
187
188 atomic_add_int(&ndisk->cur_depth, -1);
189
190 biodone(bp);
191}
192
193static void
194nvd_bioq_process(void *arg, int pending)
195{
196 struct nvd_disk *ndisk = arg;
197 struct bio *bp;
198 int err;
199
200 for (;;) {
201 mtx_lock(&ndisk->bioqlock);
202 bp = bioq_takefirst(&ndisk->bioq);
203 mtx_unlock(&ndisk->bioqlock);
204 if (bp == NULL)
205 break;
206
207#ifdef BIO_ORDERED
208 /*
209 * BIO_ORDERED flag dictates that all outstanding bios
210 * must be completed before processing the bio with
211 * BIO_ORDERED flag set.
212 */
213 if (bp->bio_flags & BIO_ORDERED) {
214 while (ndisk->cur_depth > 0) {
215 pause("nvd flush", 1);
216 }
217 }
218#endif
219
220 bp->bio_driver1 = NULL;
221 atomic_add_int(&ndisk->cur_depth, 1);
222
223 err = nvme_ns_bio_process(ndisk->ns, bp, nvd_done);
224
225 if (err) {
226 atomic_add_int(&ndisk->cur_depth, -1);
227 bp->bio_error = err;
228 bp->bio_flags |= BIO_ERROR;
229 bp->bio_resid = bp->bio_bcount;
230 biodone(bp);
231 }
232
233#ifdef BIO_ORDERED
234 /*
235 * BIO_ORDERED flag dictates that the bio with BIO_ORDERED
236 * flag set must be completed before proceeding with
237 * additional bios.
238 */
239 if (bp->bio_flags & BIO_ORDERED) {
240 while (ndisk->cur_depth > 0) {
241 pause("nvd flush", 1);
242 }
243 }
244#endif
245 }
246}
247
248static void *
249nvd_new_controller(struct nvme_controller *ctrlr)
250{
251 struct nvd_controller *nvd_ctrlr;
252
253 nvd_ctrlr = malloc(sizeof(struct nvd_controller), M_NVD,
254 M_ZERO | M_WAITOK);
255
256 TAILQ_INIT(&nvd_ctrlr->disk_head);
257 TAILQ_INSERT_TAIL(&ctrlr_head, nvd_ctrlr, tailq);
258
259 return (nvd_ctrlr);
260}
261
262static void *
263nvd_new_disk(struct nvme_namespace *ns, void *ctrlr_arg)
264{
265 uint8_t descr[NVME_MODEL_NUMBER_LENGTH+1];
266 struct nvd_disk *ndisk;
267 struct disk *disk;
268 struct nvd_controller *ctrlr = ctrlr_arg;
269
270 ndisk = malloc(sizeof(struct nvd_disk), M_NVD, M_ZERO | M_WAITOK);
271
272 disk = disk_alloc();
273 disk->d_strategy = nvd_strategy;
274 disk->d_ioctl = nvd_ioctl;
275 disk->d_name = NVD_STR;
276 disk->d_drv1 = ndisk;
277
278 disk->d_maxsize = nvme_ns_get_max_io_xfer_size(ns);
279 disk->d_sectorsize = nvme_ns_get_sector_size(ns);
280 disk->d_mediasize = (off_t)nvme_ns_get_size(ns);
281 disk->d_delmaxsize = (off_t)nvme_ns_get_size(ns);
282
283 if (TAILQ_EMPTY(&disk_head))
284 disk->d_unit = 0;
285 else
286 disk->d_unit =
287 TAILQ_LAST(&disk_head, disk_list)->disk->d_unit + 1;
288
289 disk->d_flags = 0;
290
291 if (nvme_ns_get_flags(ns) & NVME_NS_DEALLOCATE_SUPPORTED)
292 disk->d_flags |= DISKFLAG_CANDELETE;
293
294 if (nvme_ns_get_flags(ns) & NVME_NS_FLUSH_SUPPORTED)
295 disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
296
297/* ifdef used here to ease porting to stable branches at a later point. */
298#ifdef DISKFLAG_UNMAPPED_BIO
299 disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
300#endif
301
302 /*
303 * d_ident and d_descr are both far bigger than the length of either
304 * the serial or model number strings.
305 */
306 nvme_strvis(disk->d_ident, nvme_ns_get_serial_number(ns),
307 sizeof(disk->d_ident), NVME_SERIAL_NUMBER_LENGTH);
308
309 nvme_strvis(descr, nvme_ns_get_model_number(ns), sizeof(descr),
310 NVME_MODEL_NUMBER_LENGTH);
311
312#if __FreeBSD_version >= 900034
313 strlcpy(disk->d_descr, descr, sizeof(descr));
314#endif
315
316 ndisk->ns = ns;
317 ndisk->disk = disk;
318 ndisk->cur_depth = 0;
319
320 mtx_init(&ndisk->bioqlock, "NVD bioq lock", NULL, MTX_DEF);
321 bioq_init(&ndisk->bioq);
322
323 TASK_INIT(&ndisk->bioqtask, 0, nvd_bioq_process, ndisk);
324 ndisk->tq = taskqueue_create("nvd_taskq", M_WAITOK,
325 taskqueue_thread_enqueue, &ndisk->tq);
326 taskqueue_start_threads(&ndisk->tq, 1, PI_DISK, "nvd taskq");
327
328 TAILQ_INSERT_TAIL(&disk_head, ndisk, global_tailq);
329 TAILQ_INSERT_TAIL(&ctrlr->disk_head, ndisk, ctrlr_tailq);
330
331 disk_create(disk, DISK_VERSION);
332
333 printf(NVD_STR"%u: <%s> NVMe namespace\n", disk->d_unit, descr);
334 printf(NVD_STR"%u: %juMB (%ju %u byte sectors)\n", disk->d_unit,
335 (uintmax_t)disk->d_mediasize / (1024*1024),
336 (uintmax_t)disk->d_mediasize / disk->d_sectorsize,
337 disk->d_sectorsize);
338
339 return (NULL);
340}
341
342static void
343destroy_geom_disk(struct nvd_disk *ndisk)
344{
345 struct bio *bp;
346 struct disk *disk;
347 uint32_t unit;
348 int cnt = 0;
349
350 disk = ndisk->disk;
351 unit = disk->d_unit;
352 taskqueue_free(ndisk->tq);
353
354 disk_destroy(ndisk->disk);
355
356 mtx_lock(&ndisk->bioqlock);
357 for (;;) {
358 bp = bioq_takefirst(&ndisk->bioq);
359 if (bp == NULL)
360 break;
361 bp->bio_error = EIO;
362 bp->bio_flags |= BIO_ERROR;
363 bp->bio_resid = bp->bio_bcount;
364 cnt++;
365 biodone(bp);
366 }
367
368 printf(NVD_STR"%u: lost device - %d outstanding\n", unit, cnt);
369 printf(NVD_STR"%u: removing device entry\n", unit);
370
371 mtx_unlock(&ndisk->bioqlock);
372
373 mtx_destroy(&ndisk->bioqlock);
374}
375
376static void
377nvd_controller_fail(void *ctrlr_arg)
378{
379 struct nvd_controller *ctrlr = ctrlr_arg;
380 struct nvd_disk *disk;
381
382 while (!TAILQ_EMPTY(&ctrlr->disk_head)) {
383 disk = TAILQ_FIRST(&ctrlr->disk_head);
384 TAILQ_REMOVE(&disk_head, disk, global_tailq);
385 TAILQ_REMOVE(&ctrlr->disk_head, disk, ctrlr_tailq);
386 destroy_geom_disk(disk);
387 free(disk, M_NVD);
388 }
389
390 TAILQ_REMOVE(&ctrlr_head, ctrlr, tailq);
391 free(ctrlr, M_NVD);
392}
393