1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2011 Alexander Motin <mav@FreeBSD.org>
5 * Copyright (c) 2000 - 2008 S��ren Schmidt <sos@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
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 AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <sys/param.h>
34#include <sys/bio.h>
35#include <sys/endian.h>
36#include <sys/kernel.h>
37#include <sys/kobj.h>
38#include <sys/limits.h>
39#include <sys/lock.h>
40#include <sys/malloc.h>
41#include <sys/mutex.h>
42#include <sys/systm.h>
43#include <sys/taskqueue.h>
44#include <geom/geom.h>
45#include <geom/geom_dbg.h>
46#include "geom/raid/g_raid.h"
47#include "g_raid_md_if.h"
48
49static MALLOC_DEFINE(M_MD_NVIDIA, "md_nvidia_data", "GEOM_RAID NVIDIA metadata");
50
51struct nvidia_raid_conf {
52	uint8_t		nvidia_id[8];
53#define NVIDIA_MAGIC                "NVIDIA  "
54
55	uint32_t	config_size;
56	uint32_t	checksum;
57	uint16_t	version;
58	uint8_t		disk_number;
59	uint8_t		dummy_0;
60	uint32_t	total_sectors;
61	uint32_t	sector_size;
62	uint8_t		name[16];
63	uint8_t		revision[4];
64	uint32_t	disk_status;
65
66	uint32_t	magic_0;
67#define NVIDIA_MAGIC0		0x00640044
68
69	uint64_t	volume_id[2];
70	uint8_t		state;
71#define NVIDIA_S_IDLE		0
72#define NVIDIA_S_INIT		2
73#define NVIDIA_S_REBUILD	3
74#define NVIDIA_S_UPGRADE	4
75#define NVIDIA_S_SYNC		5
76	uint8_t		array_width;
77	uint8_t		total_disks;
78	uint8_t		orig_array_width;
79	uint16_t	type;
80#define NVIDIA_T_RAID0		0x0080
81#define NVIDIA_T_RAID1		0x0081
82#define NVIDIA_T_RAID3		0x0083
83#define NVIDIA_T_RAID5		0x0085	/* RLQ = 00/02? */
84#define NVIDIA_T_RAID5_SYM	0x0095	/* RLQ = 03 */
85#define NVIDIA_T_RAID10		0x008a
86#define NVIDIA_T_RAID01		0x8180
87#define NVIDIA_T_CONCAT		0x00ff
88
89	uint16_t	dummy_3;
90	uint32_t	strip_sectors;
91	uint32_t	strip_bytes;
92	uint32_t	strip_shift;
93	uint32_t	strip_mask;
94	uint32_t	stripe_sectors;
95	uint32_t	stripe_bytes;
96	uint32_t	rebuild_lba;
97	uint32_t	orig_type;
98	uint32_t	orig_total_sectors;
99	uint32_t	status;
100#define NVIDIA_S_BOOTABLE	0x00000001
101#define NVIDIA_S_DEGRADED	0x00000002
102
103	uint32_t	filler[98];
104} __packed;
105
106struct g_raid_md_nvidia_perdisk {
107	struct nvidia_raid_conf	*pd_meta;
108	int			 pd_disk_pos;
109	off_t			 pd_disk_size;
110};
111
112struct g_raid_md_nvidia_object {
113	struct g_raid_md_object	 mdio_base;
114	uint64_t		 mdio_volume_id[2];
115	struct nvidia_raid_conf	*mdio_meta;
116	struct callout		 mdio_start_co;	/* STARTING state timer. */
117	int			 mdio_total_disks;
118	int			 mdio_disks_present;
119	int			 mdio_started;
120	int			 mdio_incomplete;
121	struct root_hold_token	*mdio_rootmount; /* Root mount delay token. */
122};
123
124static g_raid_md_create_t g_raid_md_create_nvidia;
125static g_raid_md_taste_t g_raid_md_taste_nvidia;
126static g_raid_md_event_t g_raid_md_event_nvidia;
127static g_raid_md_ctl_t g_raid_md_ctl_nvidia;
128static g_raid_md_write_t g_raid_md_write_nvidia;
129static g_raid_md_fail_disk_t g_raid_md_fail_disk_nvidia;
130static g_raid_md_free_disk_t g_raid_md_free_disk_nvidia;
131static g_raid_md_free_t g_raid_md_free_nvidia;
132
133static kobj_method_t g_raid_md_nvidia_methods[] = {
134	KOBJMETHOD(g_raid_md_create,	g_raid_md_create_nvidia),
135	KOBJMETHOD(g_raid_md_taste,	g_raid_md_taste_nvidia),
136	KOBJMETHOD(g_raid_md_event,	g_raid_md_event_nvidia),
137	KOBJMETHOD(g_raid_md_ctl,	g_raid_md_ctl_nvidia),
138	KOBJMETHOD(g_raid_md_write,	g_raid_md_write_nvidia),
139	KOBJMETHOD(g_raid_md_fail_disk,	g_raid_md_fail_disk_nvidia),
140	KOBJMETHOD(g_raid_md_free_disk,	g_raid_md_free_disk_nvidia),
141	KOBJMETHOD(g_raid_md_free,	g_raid_md_free_nvidia),
142	{ 0, 0 }
143};
144
145static struct g_raid_md_class g_raid_md_nvidia_class = {
146	"NVIDIA",
147	g_raid_md_nvidia_methods,
148	sizeof(struct g_raid_md_nvidia_object),
149	.mdc_enable = 1,
150	.mdc_priority = 100
151};
152
153static int NVIDIANodeID = 1;
154
155static void
156g_raid_md_nvidia_print(struct nvidia_raid_conf *meta)
157{
158
159	if (g_raid_debug < 1)
160		return;
161
162	printf("********* ATA NVIDIA RAID Metadata *********\n");
163	printf("nvidia_id           <%.8s>\n", meta->nvidia_id);
164	printf("config_size         %u\n", meta->config_size);
165	printf("checksum            0x%08x\n", meta->checksum);
166	printf("version             0x%04x\n", meta->version);
167	printf("disk_number         %d\n", meta->disk_number);
168	printf("dummy_0             0x%02x\n", meta->dummy_0);
169	printf("total_sectors       %u\n", meta->total_sectors);
170	printf("sector_size         %u\n", meta->sector_size);
171	printf("name                <%.16s>\n", meta->name);
172	printf("revision            0x%02x%02x%02x%02x\n",
173	    meta->revision[0], meta->revision[1],
174	    meta->revision[2], meta->revision[3]);
175	printf("disk_status         0x%08x\n", meta->disk_status);
176	printf("magic_0             0x%08x\n", meta->magic_0);
177	printf("volume_id           0x%016jx%016jx\n",
178	    meta->volume_id[1], meta->volume_id[0]);
179	printf("state               0x%02x\n", meta->state);
180	printf("array_width         %u\n", meta->array_width);
181	printf("total_disks         %u\n", meta->total_disks);
182	printf("orig_array_width    %u\n", meta->orig_array_width);
183	printf("type                0x%04x\n", meta->type);
184	printf("dummy_3             0x%04x\n", meta->dummy_3);
185	printf("strip_sectors       %u\n", meta->strip_sectors);
186	printf("strip_bytes         %u\n", meta->strip_bytes);
187	printf("strip_shift         %u\n", meta->strip_shift);
188	printf("strip_mask          0x%08x\n", meta->strip_mask);
189	printf("stripe_sectors      %u\n", meta->stripe_sectors);
190	printf("stripe_bytes        %u\n", meta->stripe_bytes);
191	printf("rebuild_lba         %u\n", meta->rebuild_lba);
192	printf("orig_type           0x%04x\n", meta->orig_type);
193	printf("orig_total_sectors  %u\n", meta->orig_total_sectors);
194	printf("status              0x%08x\n", meta->status);
195	printf("=================================================\n");
196}
197
198static struct nvidia_raid_conf *
199nvidia_meta_copy(struct nvidia_raid_conf *meta)
200{
201	struct nvidia_raid_conf *nmeta;
202
203	nmeta = malloc(sizeof(*meta), M_MD_NVIDIA, M_WAITOK);
204	memcpy(nmeta, meta, sizeof(*meta));
205	return (nmeta);
206}
207
208static int
209nvidia_meta_translate_disk(struct nvidia_raid_conf *meta, int md_disk_pos)
210{
211	int disk_pos;
212
213	if (md_disk_pos >= 0 && meta->type == NVIDIA_T_RAID01) {
214		disk_pos = (md_disk_pos / meta->array_width) +
215		    (md_disk_pos % meta->array_width) * meta->array_width;
216	} else
217		disk_pos = md_disk_pos;
218	return (disk_pos);
219}
220
221static void
222nvidia_meta_get_name(struct nvidia_raid_conf *meta, char *buf)
223{
224	int i;
225
226	strncpy(buf, meta->name, 16);
227	buf[16] = 0;
228	for (i = 15; i >= 0; i--) {
229		if (buf[i] > 0x20)
230			break;
231		buf[i] = 0;
232	}
233}
234
235static void
236nvidia_meta_put_name(struct nvidia_raid_conf *meta, char *buf)
237{
238
239	memset(meta->name, 0x20, 16);
240	memcpy(meta->name, buf, MIN(strlen(buf), 16));
241}
242
243static struct nvidia_raid_conf *
244nvidia_meta_read(struct g_consumer *cp)
245{
246	struct g_provider *pp;
247	struct nvidia_raid_conf *meta;
248	char *buf;
249	int error, i;
250	uint32_t checksum, *ptr;
251
252	pp = cp->provider;
253
254	/* Read the anchor sector. */
255	buf = g_read_data(cp,
256	    pp->mediasize - 2 * pp->sectorsize, pp->sectorsize, &error);
257	if (buf == NULL) {
258		G_RAID_DEBUG(1, "Cannot read metadata from %s (error=%d).",
259		    pp->name, error);
260		return (NULL);
261	}
262	meta = (struct nvidia_raid_conf *)buf;
263
264	/* Check if this is an NVIDIA RAID struct */
265	if (strncmp(meta->nvidia_id, NVIDIA_MAGIC, strlen(NVIDIA_MAGIC))) {
266		G_RAID_DEBUG(1, "NVIDIA signature check failed on %s", pp->name);
267		g_free(buf);
268		return (NULL);
269	}
270	if (meta->config_size > 128 ||
271	    meta->config_size < 30) {
272		G_RAID_DEBUG(1, "NVIDIA metadata size looks wrong: %d",
273		    meta->config_size);
274		g_free(buf);
275		return (NULL);
276	}
277	meta = malloc(sizeof(*meta), M_MD_NVIDIA, M_WAITOK);
278	memcpy(meta, buf, min(sizeof(*meta), pp->sectorsize));
279	g_free(buf);
280
281	/* Check metadata checksum. */
282	for (checksum = 0, ptr = (uint32_t *)meta,
283	    i = 0; i < meta->config_size; i++)
284		checksum += *ptr++;
285	if (checksum != 0) {
286		G_RAID_DEBUG(1, "NVIDIA checksum check failed on %s", pp->name);
287		free(meta, M_MD_NVIDIA);
288		return (NULL);
289	}
290
291	/* Check volume state. */
292	if (meta->state != NVIDIA_S_IDLE && meta->state != NVIDIA_S_INIT &&
293	    meta->state != NVIDIA_S_REBUILD && meta->state != NVIDIA_S_SYNC) {
294		G_RAID_DEBUG(1, "NVIDIA unknown state on %s (0x%02x)",
295		    pp->name, meta->state);
296		free(meta, M_MD_NVIDIA);
297		return (NULL);
298	}
299
300	/* Check raid type. */
301	if (meta->type != NVIDIA_T_RAID0 && meta->type != NVIDIA_T_RAID1 &&
302	    meta->type != NVIDIA_T_RAID3 && meta->type != NVIDIA_T_RAID5 &&
303	    meta->type != NVIDIA_T_RAID5_SYM &&
304	    meta->type != NVIDIA_T_RAID01 && meta->type != NVIDIA_T_CONCAT) {
305		G_RAID_DEBUG(1, "NVIDIA unknown RAID level on %s (0x%02x)",
306		    pp->name, meta->type);
307		free(meta, M_MD_NVIDIA);
308		return (NULL);
309	}
310
311	return (meta);
312}
313
314static int
315nvidia_meta_write(struct g_consumer *cp, struct nvidia_raid_conf *meta)
316{
317	struct g_provider *pp;
318	char *buf;
319	int error, i;
320	uint32_t checksum, *ptr;
321
322	pp = cp->provider;
323
324	/* Recalculate checksum for case if metadata were changed. */
325	meta->checksum = 0;
326	for (checksum = 0, ptr = (uint32_t *)meta,
327	    i = 0; i < meta->config_size; i++)
328		checksum += *ptr++;
329	meta->checksum -= checksum;
330
331	/* Create and fill buffer. */
332	buf = malloc(pp->sectorsize, M_MD_NVIDIA, M_WAITOK | M_ZERO);
333	memcpy(buf, meta, sizeof(*meta));
334
335	/* Write metadata. */
336	error = g_write_data(cp,
337	    pp->mediasize - 2 * pp->sectorsize, buf, pp->sectorsize);
338	if (error != 0) {
339		G_RAID_DEBUG(1, "Cannot write metadata to %s (error=%d).",
340		    pp->name, error);
341	}
342
343	free(buf, M_MD_NVIDIA);
344	return (error);
345}
346
347static int
348nvidia_meta_erase(struct g_consumer *cp)
349{
350	struct g_provider *pp;
351	char *buf;
352	int error;
353
354	pp = cp->provider;
355	buf = malloc(pp->sectorsize, M_MD_NVIDIA, M_WAITOK | M_ZERO);
356	error = g_write_data(cp,
357	    pp->mediasize - 2 * pp->sectorsize, buf, pp->sectorsize);
358	if (error != 0) {
359		G_RAID_DEBUG(1, "Cannot erase metadata on %s (error=%d).",
360		    pp->name, error);
361	}
362	free(buf, M_MD_NVIDIA);
363	return (error);
364}
365
366static struct g_raid_disk *
367g_raid_md_nvidia_get_disk(struct g_raid_softc *sc, int id)
368{
369	struct g_raid_disk	*disk;
370	struct g_raid_md_nvidia_perdisk *pd;
371
372	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
373		pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
374		if (pd->pd_disk_pos == id)
375			break;
376	}
377	return (disk);
378}
379
380static int
381g_raid_md_nvidia_supported(int level, int qual, int disks, int force)
382{
383
384	switch (level) {
385	case G_RAID_VOLUME_RL_RAID0:
386		if (disks < 1)
387			return (0);
388		if (!force && (disks < 2 || disks > 6))
389			return (0);
390		break;
391	case G_RAID_VOLUME_RL_RAID1:
392		if (disks < 1)
393			return (0);
394		if (!force && (disks != 2))
395			return (0);
396		break;
397	case G_RAID_VOLUME_RL_RAID1E:
398		if (disks < 2)
399			return (0);
400		if (disks % 2 != 0)
401			return (0);
402		if (!force && (disks < 4))
403			return (0);
404		break;
405	case G_RAID_VOLUME_RL_SINGLE:
406		if (disks != 1)
407			return (0);
408		break;
409	case G_RAID_VOLUME_RL_CONCAT:
410		if (disks < 2)
411			return (0);
412		break;
413	case G_RAID_VOLUME_RL_RAID5:
414		if (disks < 3)
415			return (0);
416		if (qual != G_RAID_VOLUME_RLQ_R5LA &&
417		    qual != G_RAID_VOLUME_RLQ_R5LS)
418			return (0);
419		break;
420	default:
421		return (0);
422	}
423	if (level != G_RAID_VOLUME_RL_RAID5 && qual != G_RAID_VOLUME_RLQ_NONE)
424		return (0);
425	return (1);
426}
427
428static int
429g_raid_md_nvidia_start_disk(struct g_raid_disk *disk)
430{
431	struct g_raid_softc *sc;
432	struct g_raid_subdisk *sd, *tmpsd;
433	struct g_raid_disk *olddisk, *tmpdisk;
434	struct g_raid_md_object *md;
435	struct g_raid_md_nvidia_object *mdi;
436	struct g_raid_md_nvidia_perdisk *pd, *oldpd;
437	struct nvidia_raid_conf *meta;
438	int disk_pos, resurrection = 0;
439
440	sc = disk->d_softc;
441	md = sc->sc_md;
442	mdi = (struct g_raid_md_nvidia_object *)md;
443	meta = mdi->mdio_meta;
444	pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
445	olddisk = NULL;
446
447	/* Find disk position in metadata by its serial. */
448	if (pd->pd_meta != NULL) {
449		disk_pos = pd->pd_meta->disk_number;
450		if (disk_pos >= meta->total_disks || mdi->mdio_started)
451			disk_pos = -3;
452	} else
453		disk_pos = -3;
454	/* For RAID0+1 we need to translate order. */
455	disk_pos = nvidia_meta_translate_disk(meta, disk_pos);
456	if (disk_pos < 0) {
457		G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk");
458		/* If we are in the start process, that's all for now. */
459		if (!mdi->mdio_started)
460			goto nofit;
461		/*
462		 * If we have already started - try to get use of the disk.
463		 * Try to replace OFFLINE disks first, then FAILED.
464		 */
465		TAILQ_FOREACH(tmpdisk, &sc->sc_disks, d_next) {
466			if (tmpdisk->d_state != G_RAID_DISK_S_OFFLINE &&
467			    tmpdisk->d_state != G_RAID_DISK_S_FAILED)
468				continue;
469			/* Make sure this disk is big enough. */
470			TAILQ_FOREACH(sd, &tmpdisk->d_subdisks, sd_next) {
471				if (sd->sd_offset + sd->sd_size + 2 * 512 >
472				    pd->pd_disk_size) {
473					G_RAID_DEBUG1(1, sc,
474					    "Disk too small (%ju < %ju)",
475					    pd->pd_disk_size,
476					    sd->sd_offset + sd->sd_size + 512);
477					break;
478				}
479			}
480			if (sd != NULL)
481				continue;
482			if (tmpdisk->d_state == G_RAID_DISK_S_OFFLINE) {
483				olddisk = tmpdisk;
484				break;
485			} else if (olddisk == NULL)
486				olddisk = tmpdisk;
487		}
488		if (olddisk == NULL) {
489nofit:
490			g_raid_change_disk_state(disk, G_RAID_DISK_S_SPARE);
491			return (1);
492		}
493		oldpd = (struct g_raid_md_nvidia_perdisk *)olddisk->d_md_data;
494		disk_pos = oldpd->pd_disk_pos;
495		resurrection = 1;
496	}
497
498	if (olddisk == NULL) {
499		/* Find placeholder by position. */
500		olddisk = g_raid_md_nvidia_get_disk(sc, disk_pos);
501		if (olddisk == NULL)
502			panic("No disk at position %d!", disk_pos);
503		if (olddisk->d_state != G_RAID_DISK_S_OFFLINE) {
504			G_RAID_DEBUG1(1, sc, "More than one disk for pos %d",
505			    disk_pos);
506			g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE);
507			return (0);
508		}
509		oldpd = (struct g_raid_md_nvidia_perdisk *)olddisk->d_md_data;
510	}
511
512	/* Replace failed disk or placeholder with new disk. */
513	TAILQ_FOREACH_SAFE(sd, &olddisk->d_subdisks, sd_next, tmpsd) {
514		TAILQ_REMOVE(&olddisk->d_subdisks, sd, sd_next);
515		TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
516		sd->sd_disk = disk;
517	}
518	oldpd->pd_disk_pos = -2;
519	pd->pd_disk_pos = disk_pos;
520
521	/* If it was placeholder -- destroy it. */
522	if (olddisk->d_state == G_RAID_DISK_S_OFFLINE) {
523		g_raid_destroy_disk(olddisk);
524	} else {
525		/* Otherwise, make it STALE_FAILED. */
526		g_raid_change_disk_state(olddisk, G_RAID_DISK_S_STALE_FAILED);
527	}
528
529	/* Welcome the new disk. */
530	if (resurrection)
531		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
532	else// if (pd->pd_meta->disk_status == NVIDIA_S_CURRENT ||
533	    //pd->pd_meta->disk_status == NVIDIA_S_REBUILD)
534		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
535//	else
536//		g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
537	TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
538		/*
539		 * Different disks may have different sizes,
540		 * in concat mode. Update from real disk size.
541		 */
542		if (meta->type == NVIDIA_T_CONCAT)
543			sd->sd_size = pd->pd_disk_size - 0x800 * 512;
544
545		if (resurrection) {
546			/* New or ex-spare disk. */
547			g_raid_change_subdisk_state(sd,
548			    G_RAID_SUBDISK_S_NEW);
549		} else if (meta->state == NVIDIA_S_REBUILD &&
550		    (pd->pd_meta->disk_status & 0x100)) {
551			/* Rebuilding disk. */
552			g_raid_change_subdisk_state(sd,
553			    G_RAID_SUBDISK_S_REBUILD);
554			sd->sd_rebuild_pos = (off_t)pd->pd_meta->rebuild_lba /
555			    meta->array_width * pd->pd_meta->sector_size;
556		} else if (meta->state == NVIDIA_S_SYNC) {
557			/* Resyncing/dirty disk. */
558			g_raid_change_subdisk_state(sd,
559			    G_RAID_SUBDISK_S_RESYNC);
560			sd->sd_rebuild_pos = (off_t)pd->pd_meta->rebuild_lba /
561			    meta->array_width * pd->pd_meta->sector_size;
562		} else {
563			/* Up to date disk. */
564			g_raid_change_subdisk_state(sd,
565			    G_RAID_SUBDISK_S_ACTIVE);
566		}
567		g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
568		    G_RAID_EVENT_SUBDISK);
569	}
570
571	/* Update status of our need for spare. */
572	if (mdi->mdio_started) {
573		mdi->mdio_incomplete =
574		    (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
575		     mdi->mdio_total_disks);
576	}
577
578	return (resurrection);
579}
580
581static void
582g_disk_md_nvidia_retaste(void *arg, int pending)
583{
584
585	G_RAID_DEBUG(1, "Array is not complete, trying to retaste.");
586	g_retaste(&g_raid_class);
587	free(arg, M_MD_NVIDIA);
588}
589
590static void
591g_raid_md_nvidia_refill(struct g_raid_softc *sc)
592{
593	struct g_raid_md_object *md;
594	struct g_raid_md_nvidia_object *mdi;
595	struct g_raid_disk *disk;
596	struct task *task;
597	int update, na;
598
599	md = sc->sc_md;
600	mdi = (struct g_raid_md_nvidia_object *)md;
601	update = 0;
602	do {
603		/* Make sure we miss anything. */
604		na = g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE);
605		if (na == mdi->mdio_total_disks)
606			break;
607
608		G_RAID_DEBUG1(1, md->mdo_softc,
609		    "Array is not complete (%d of %d), "
610		    "trying to refill.", na, mdi->mdio_total_disks);
611
612		/* Try to get use some of STALE disks. */
613		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
614			if (disk->d_state == G_RAID_DISK_S_STALE) {
615				update += g_raid_md_nvidia_start_disk(disk);
616				if (disk->d_state == G_RAID_DISK_S_ACTIVE)
617					break;
618			}
619		}
620		if (disk != NULL)
621			continue;
622
623		/* Try to get use some of SPARE disks. */
624		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
625			if (disk->d_state == G_RAID_DISK_S_SPARE) {
626				update += g_raid_md_nvidia_start_disk(disk);
627				if (disk->d_state == G_RAID_DISK_S_ACTIVE)
628					break;
629			}
630		}
631	} while (disk != NULL);
632
633	/* Write new metadata if we changed something. */
634	if (update)
635		g_raid_md_write_nvidia(md, NULL, NULL, NULL);
636
637	/* Update status of our need for spare. */
638	mdi->mdio_incomplete = (g_raid_ndisks(sc, G_RAID_DISK_S_ACTIVE) <
639	    mdi->mdio_total_disks);
640
641	/* Request retaste hoping to find spare. */
642	if (mdi->mdio_incomplete) {
643		task = malloc(sizeof(struct task),
644		    M_MD_NVIDIA, M_WAITOK | M_ZERO);
645		TASK_INIT(task, 0, g_disk_md_nvidia_retaste, task);
646		taskqueue_enqueue(taskqueue_swi, task);
647	}
648}
649
650static void
651g_raid_md_nvidia_start(struct g_raid_softc *sc)
652{
653	struct g_raid_md_object *md;
654	struct g_raid_md_nvidia_object *mdi;
655	struct g_raid_md_nvidia_perdisk *pd;
656	struct nvidia_raid_conf *meta;
657	struct g_raid_volume *vol;
658	struct g_raid_subdisk *sd;
659	struct g_raid_disk *disk;
660	off_t size;
661	int j, disk_pos;
662	char buf[17];
663
664	md = sc->sc_md;
665	mdi = (struct g_raid_md_nvidia_object *)md;
666	meta = mdi->mdio_meta;
667
668	/* Create volumes and subdisks. */
669	nvidia_meta_get_name(meta, buf);
670	vol = g_raid_create_volume(sc, buf, -1);
671	vol->v_mediasize = (off_t)meta->total_sectors * 512;
672	vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
673	if (meta->type == NVIDIA_T_RAID0) {
674		vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
675		size = vol->v_mediasize / mdi->mdio_total_disks;
676	} else if (meta->type == NVIDIA_T_RAID1) {
677		vol->v_raid_level = G_RAID_VOLUME_RL_RAID1;
678		size = vol->v_mediasize;
679	} else if (meta->type == NVIDIA_T_RAID01) {
680		vol->v_raid_level = G_RAID_VOLUME_RL_RAID1E;
681		size = vol->v_mediasize / (mdi->mdio_total_disks / 2);
682	} else if (meta->type == NVIDIA_T_CONCAT) {
683		if (mdi->mdio_total_disks == 1)
684			vol->v_raid_level = G_RAID_VOLUME_RL_SINGLE;
685		else
686			vol->v_raid_level = G_RAID_VOLUME_RL_CONCAT;
687		size = 0;
688	} else if (meta->type == NVIDIA_T_RAID5) {
689		vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
690		vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LA;
691		size = vol->v_mediasize / (mdi->mdio_total_disks - 1);
692	} else if (meta->type == NVIDIA_T_RAID5_SYM) {
693		vol->v_raid_level = G_RAID_VOLUME_RL_RAID5;
694		vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_R5LS;
695		size = vol->v_mediasize / (mdi->mdio_total_disks - 1);
696	} else {
697		vol->v_raid_level = G_RAID_VOLUME_RL_UNKNOWN;
698		size = 0;
699	}
700	vol->v_strip_size = meta->strip_sectors * 512; //ZZZ
701	vol->v_disks_count = mdi->mdio_total_disks;
702	vol->v_sectorsize = 512; //ZZZ
703	for (j = 0; j < vol->v_disks_count; j++) {
704		sd = &vol->v_subdisks[j];
705		sd->sd_offset = 0;
706		sd->sd_size = size;
707	}
708	g_raid_start_volume(vol);
709
710	/* Create disk placeholders to store data for later writing. */
711	for (disk_pos = 0; disk_pos < mdi->mdio_total_disks; disk_pos++) {
712		pd = malloc(sizeof(*pd), M_MD_NVIDIA, M_WAITOK | M_ZERO);
713		pd->pd_disk_pos = disk_pos;
714		disk = g_raid_create_disk(sc);
715		disk->d_md_data = (void *)pd;
716		disk->d_state = G_RAID_DISK_S_OFFLINE;
717		sd = &vol->v_subdisks[disk_pos];
718		sd->sd_disk = disk;
719		TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
720	}
721
722	/* Make all disks found till the moment take their places. */
723	do {
724		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
725			if (disk->d_state == G_RAID_DISK_S_NONE) {
726				g_raid_md_nvidia_start_disk(disk);
727				break;
728			}
729		}
730	} while (disk != NULL);
731
732	mdi->mdio_started = 1;
733	G_RAID_DEBUG1(0, sc, "Array started.");
734	g_raid_md_write_nvidia(md, NULL, NULL, NULL);
735
736	/* Pickup any STALE/SPARE disks to refill array if needed. */
737	g_raid_md_nvidia_refill(sc);
738
739	g_raid_event_send(vol, G_RAID_VOLUME_E_START, G_RAID_EVENT_VOLUME);
740
741	callout_stop(&mdi->mdio_start_co);
742	G_RAID_DEBUG1(1, sc, "root_mount_rel %p", mdi->mdio_rootmount);
743	root_mount_rel(mdi->mdio_rootmount);
744	mdi->mdio_rootmount = NULL;
745}
746
747static void
748g_raid_md_nvidia_new_disk(struct g_raid_disk *disk)
749{
750	struct g_raid_softc *sc;
751	struct g_raid_md_object *md;
752	struct g_raid_md_nvidia_object *mdi;
753	struct nvidia_raid_conf *pdmeta;
754	struct g_raid_md_nvidia_perdisk *pd;
755
756	sc = disk->d_softc;
757	md = sc->sc_md;
758	mdi = (struct g_raid_md_nvidia_object *)md;
759	pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
760	pdmeta = pd->pd_meta;
761
762	if (mdi->mdio_started) {
763		if (g_raid_md_nvidia_start_disk(disk))
764			g_raid_md_write_nvidia(md, NULL, NULL, NULL);
765	} else {
766		if (mdi->mdio_meta == NULL ||
767		    mdi->mdio_meta->disk_number >= mdi->mdio_meta->total_disks) {
768			G_RAID_DEBUG1(1, sc, "Newer disk");
769			if (mdi->mdio_meta != NULL)
770				free(mdi->mdio_meta, M_MD_NVIDIA);
771			mdi->mdio_meta = nvidia_meta_copy(pdmeta);
772			mdi->mdio_total_disks = pdmeta->total_disks;
773			mdi->mdio_disks_present = 1;
774		} else if (pdmeta->disk_number < mdi->mdio_meta->total_disks) {
775			mdi->mdio_disks_present++;
776			G_RAID_DEBUG1(1, sc, "Matching disk (%d of %d up)",
777			    mdi->mdio_disks_present,
778			    mdi->mdio_total_disks);
779		} else
780			G_RAID_DEBUG1(1, sc, "Spare disk");
781
782		/* If we collected all needed disks - start array. */
783		if (mdi->mdio_disks_present == mdi->mdio_total_disks)
784			g_raid_md_nvidia_start(sc);
785	}
786}
787
788static void
789g_raid_nvidia_go(void *arg)
790{
791	struct g_raid_softc *sc;
792	struct g_raid_md_object *md;
793	struct g_raid_md_nvidia_object *mdi;
794
795	sc = arg;
796	md = sc->sc_md;
797	mdi = (struct g_raid_md_nvidia_object *)md;
798	if (!mdi->mdio_started) {
799		G_RAID_DEBUG1(0, sc, "Force array start due to timeout.");
800		g_raid_event_send(sc, G_RAID_NODE_E_START, 0);
801	}
802}
803
804static int
805g_raid_md_create_nvidia(struct g_raid_md_object *md, struct g_class *mp,
806    struct g_geom **gp)
807{
808	struct g_raid_softc *sc;
809	struct g_raid_md_nvidia_object *mdi;
810	char name[32];
811
812	mdi = (struct g_raid_md_nvidia_object *)md;
813	arc4rand(&mdi->mdio_volume_id, 16, 0);
814	snprintf(name, sizeof(name), "NVIDIA-%d",
815	    atomic_fetchadd_int(&NVIDIANodeID, 1));
816	sc = g_raid_create_node(mp, name, md);
817	if (sc == NULL)
818		return (G_RAID_MD_TASTE_FAIL);
819	md->mdo_softc = sc;
820	*gp = sc->sc_geom;
821	return (G_RAID_MD_TASTE_NEW);
822}
823
824static int
825g_raid_md_taste_nvidia(struct g_raid_md_object *md, struct g_class *mp,
826                              struct g_consumer *cp, struct g_geom **gp)
827{
828	struct g_consumer *rcp;
829	struct g_provider *pp;
830	struct g_raid_md_nvidia_object *mdi, *mdi1;
831	struct g_raid_softc *sc;
832	struct g_raid_disk *disk;
833	struct nvidia_raid_conf *meta;
834	struct g_raid_md_nvidia_perdisk *pd;
835	struct g_geom *geom;
836	int result, spare, len;
837	char name[32];
838	uint16_t vendor;
839
840	G_RAID_DEBUG(1, "Tasting NVIDIA on %s", cp->provider->name);
841	mdi = (struct g_raid_md_nvidia_object *)md;
842	pp = cp->provider;
843
844	/* Read metadata from device. */
845	meta = NULL;
846	g_topology_unlock();
847	vendor = 0xffff;
848	len = sizeof(vendor);
849	if (pp->geom->rank == 1)
850		g_io_getattr("GEOM::hba_vendor", cp, &len, &vendor);
851	meta = nvidia_meta_read(cp);
852	g_topology_lock();
853	if (meta == NULL) {
854		if (g_raid_aggressive_spare) {
855			if (vendor == 0x10de) {
856				G_RAID_DEBUG(1,
857				    "No NVIDIA metadata, forcing spare.");
858				spare = 2;
859				goto search;
860			} else {
861				G_RAID_DEBUG(1,
862				    "NVIDIA vendor mismatch 0x%04x != 0x10de",
863				    vendor);
864			}
865		}
866		return (G_RAID_MD_TASTE_FAIL);
867	}
868
869	/* Metadata valid. Print it. */
870	g_raid_md_nvidia_print(meta);
871	G_RAID_DEBUG(1, "NVIDIA disk position %d", meta->disk_number);
872	spare = 0;//(meta->type == NVIDIA_T_SPARE) ? 1 : 0;
873
874search:
875	/* Search for matching node. */
876	sc = NULL;
877	mdi1 = NULL;
878	LIST_FOREACH(geom, &mp->geom, geom) {
879		sc = geom->softc;
880		if (sc == NULL)
881			continue;
882		if (sc->sc_stopping != 0)
883			continue;
884		if (sc->sc_md->mdo_class != md->mdo_class)
885			continue;
886		mdi1 = (struct g_raid_md_nvidia_object *)sc->sc_md;
887		if (spare) {
888			if (mdi1->mdio_incomplete)
889				break;
890		} else {
891			if (memcmp(&mdi1->mdio_volume_id,
892			     &meta->volume_id, 16) == 0)
893				break;
894		}
895	}
896
897	/* Found matching node. */
898	if (geom != NULL) {
899		G_RAID_DEBUG(1, "Found matching array %s", sc->sc_name);
900		result = G_RAID_MD_TASTE_EXISTING;
901
902	} else if (spare) { /* Not found needy node -- left for later. */
903		G_RAID_DEBUG(1, "Spare is not needed at this time");
904		goto fail1;
905
906	} else { /* Not found matching node -- create one. */
907		result = G_RAID_MD_TASTE_NEW;
908		memcpy(&mdi->mdio_volume_id, &meta->volume_id, 16);
909		snprintf(name, sizeof(name), "NVIDIA-%d",
910		    atomic_fetchadd_int(&NVIDIANodeID, 1));
911		sc = g_raid_create_node(mp, name, md);
912		md->mdo_softc = sc;
913		geom = sc->sc_geom;
914		callout_init(&mdi->mdio_start_co, 1);
915		callout_reset(&mdi->mdio_start_co, g_raid_start_timeout * hz,
916		    g_raid_nvidia_go, sc);
917		mdi->mdio_rootmount = root_mount_hold("GRAID-NVIDIA");
918		G_RAID_DEBUG1(1, sc, "root_mount_hold %p", mdi->mdio_rootmount);
919	}
920
921	/* There is no return after this point, so we close passed consumer. */
922	g_access(cp, -1, 0, 0);
923
924	rcp = g_new_consumer(geom);
925	rcp->flags |= G_CF_DIRECT_RECEIVE;
926	g_attach(rcp, pp);
927	if (g_access(rcp, 1, 1, 1) != 0)
928		; //goto fail1;
929
930	g_topology_unlock();
931	sx_xlock(&sc->sc_lock);
932
933	pd = malloc(sizeof(*pd), M_MD_NVIDIA, M_WAITOK | M_ZERO);
934	pd->pd_meta = meta;
935	if (spare == 2) {
936		pd->pd_disk_pos = -3;
937	} else {
938		pd->pd_disk_pos = -1;
939	}
940	pd->pd_disk_size = pp->mediasize;
941	disk = g_raid_create_disk(sc);
942	disk->d_md_data = (void *)pd;
943	disk->d_consumer = rcp;
944	rcp->private = disk;
945
946	g_raid_get_disk_info(disk);
947
948	g_raid_md_nvidia_new_disk(disk);
949
950	sx_xunlock(&sc->sc_lock);
951	g_topology_lock();
952	*gp = geom;
953	return (result);
954fail1:
955	free(meta, M_MD_NVIDIA);
956	return (G_RAID_MD_TASTE_FAIL);
957}
958
959static int
960g_raid_md_event_nvidia(struct g_raid_md_object *md,
961    struct g_raid_disk *disk, u_int event)
962{
963	struct g_raid_softc *sc;
964	struct g_raid_subdisk *sd;
965	struct g_raid_md_nvidia_object *mdi;
966	struct g_raid_md_nvidia_perdisk *pd;
967
968	sc = md->mdo_softc;
969	mdi = (struct g_raid_md_nvidia_object *)md;
970	if (disk == NULL) {
971		switch (event) {
972		case G_RAID_NODE_E_START:
973			if (!mdi->mdio_started) {
974				/* Bump volume ID to drop missing disks. */
975				arc4rand(&mdi->mdio_volume_id, 16, 0);
976				g_raid_md_nvidia_start(sc);
977			}
978			return (0);
979		}
980		return (-1);
981	}
982	pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
983	switch (event) {
984	case G_RAID_DISK_E_DISCONNECTED:
985		/* If disk was assigned, just update statuses. */
986		if (pd->pd_disk_pos >= 0) {
987			g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
988			if (disk->d_consumer) {
989				g_raid_kill_consumer(sc, disk->d_consumer);
990				disk->d_consumer = NULL;
991			}
992			TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
993				g_raid_change_subdisk_state(sd,
994				    G_RAID_SUBDISK_S_NONE);
995				g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
996				    G_RAID_EVENT_SUBDISK);
997			}
998		} else {
999			/* Otherwise -- delete. */
1000			g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
1001			g_raid_destroy_disk(disk);
1002		}
1003
1004		if (mdi->mdio_started) {
1005			/* Bump volume ID to prevent disk resurrection. */
1006			if (pd->pd_disk_pos >= 0)
1007				arc4rand(&mdi->mdio_volume_id, 16, 0);
1008
1009			/* Write updated metadata to all disks. */
1010			g_raid_md_write_nvidia(md, NULL, NULL, NULL);
1011		}
1012
1013		/* Check if anything left except placeholders. */
1014		if (g_raid_ndisks(sc, -1) ==
1015		    g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
1016			g_raid_destroy_node(sc, 0);
1017		else
1018			g_raid_md_nvidia_refill(sc);
1019		return (0);
1020	}
1021	return (-2);
1022}
1023
1024static int
1025g_raid_md_ctl_nvidia(struct g_raid_md_object *md,
1026    struct gctl_req *req)
1027{
1028	struct g_raid_softc *sc;
1029	struct g_raid_volume *vol;
1030	struct g_raid_subdisk *sd;
1031	struct g_raid_disk *disk;
1032	struct g_raid_md_nvidia_object *mdi;
1033	struct g_raid_md_nvidia_perdisk *pd;
1034	struct g_consumer *cp;
1035	struct g_provider *pp;
1036	char arg[16];
1037	const char *verb, *volname, *levelname, *diskname;
1038	int *nargs, *force;
1039	off_t size, sectorsize, strip, volsize;
1040	intmax_t *sizearg, *striparg;
1041	int numdisks, i, len, level, qual, update;
1042	int error;
1043
1044	sc = md->mdo_softc;
1045	mdi = (struct g_raid_md_nvidia_object *)md;
1046	verb = gctl_get_param(req, "verb", NULL);
1047	nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
1048	error = 0;
1049	if (strcmp(verb, "label") == 0) {
1050		if (*nargs < 4) {
1051			gctl_error(req, "Invalid number of arguments.");
1052			return (-1);
1053		}
1054		volname = gctl_get_asciiparam(req, "arg1");
1055		if (volname == NULL) {
1056			gctl_error(req, "No volume name.");
1057			return (-2);
1058		}
1059		levelname = gctl_get_asciiparam(req, "arg2");
1060		if (levelname == NULL) {
1061			gctl_error(req, "No RAID level.");
1062			return (-3);
1063		}
1064		if (strcasecmp(levelname, "RAID5") == 0)
1065			levelname = "RAID5-LS";
1066		if (g_raid_volume_str2level(levelname, &level, &qual)) {
1067			gctl_error(req, "Unknown RAID level '%s'.", levelname);
1068			return (-4);
1069		}
1070		numdisks = *nargs - 3;
1071		force = gctl_get_paraml(req, "force", sizeof(*force));
1072		if (!g_raid_md_nvidia_supported(level, qual, numdisks,
1073		    force ? *force : 0)) {
1074			gctl_error(req, "Unsupported RAID level "
1075			    "(0x%02x/0x%02x), or number of disks (%d).",
1076			    level, qual, numdisks);
1077			return (-5);
1078		}
1079
1080		/* Search for disks, connect them and probe. */
1081		size = 0x7fffffffffffffffllu;
1082		sectorsize = 0;
1083		for (i = 0; i < numdisks; i++) {
1084			snprintf(arg, sizeof(arg), "arg%d", i + 3);
1085			diskname = gctl_get_asciiparam(req, arg);
1086			if (diskname == NULL) {
1087				gctl_error(req, "No disk name (%s).", arg);
1088				error = -6;
1089				break;
1090			}
1091			if (strcmp(diskname, "NONE") == 0) {
1092				cp = NULL;
1093				pp = NULL;
1094			} else {
1095				g_topology_lock();
1096				cp = g_raid_open_consumer(sc, diskname);
1097				if (cp == NULL) {
1098					gctl_error(req, "Can't open '%s'.",
1099					    diskname);
1100					g_topology_unlock();
1101					error = -7;
1102					break;
1103				}
1104				pp = cp->provider;
1105			}
1106			pd = malloc(sizeof(*pd), M_MD_NVIDIA, M_WAITOK | M_ZERO);
1107			pd->pd_disk_pos = i;
1108			disk = g_raid_create_disk(sc);
1109			disk->d_md_data = (void *)pd;
1110			disk->d_consumer = cp;
1111			if (cp == NULL)
1112				continue;
1113			cp->private = disk;
1114			g_topology_unlock();
1115
1116			g_raid_get_disk_info(disk);
1117
1118			pd->pd_disk_size = pp->mediasize;
1119			if (size > pp->mediasize)
1120				size = pp->mediasize;
1121			if (sectorsize < pp->sectorsize)
1122				sectorsize = pp->sectorsize;
1123		}
1124		if (error != 0)
1125			return (error);
1126
1127		if (sectorsize <= 0) {
1128			gctl_error(req, "Can't get sector size.");
1129			return (-8);
1130		}
1131
1132		/* Reserve space for metadata. */
1133		size -= 2 * sectorsize;
1134
1135		/* Handle size argument. */
1136		len = sizeof(*sizearg);
1137		sizearg = gctl_get_param(req, "size", &len);
1138		if (sizearg != NULL && len == sizeof(*sizearg) &&
1139		    *sizearg > 0) {
1140			if (*sizearg > size) {
1141				gctl_error(req, "Size too big %lld > %lld.",
1142				    (long long)*sizearg, (long long)size);
1143				return (-9);
1144			}
1145			size = *sizearg;
1146		}
1147
1148		/* Handle strip argument. */
1149		strip = 131072;
1150		len = sizeof(*striparg);
1151		striparg = gctl_get_param(req, "strip", &len);
1152		if (striparg != NULL && len == sizeof(*striparg) &&
1153		    *striparg > 0) {
1154			if (*striparg < sectorsize) {
1155				gctl_error(req, "Strip size too small.");
1156				return (-10);
1157			}
1158			if (*striparg % sectorsize != 0) {
1159				gctl_error(req, "Incorrect strip size.");
1160				return (-11);
1161			}
1162			if (strip > 65535 * sectorsize) {
1163				gctl_error(req, "Strip size too big.");
1164				return (-12);
1165			}
1166			strip = *striparg;
1167		}
1168
1169		/* Round size down to strip or sector. */
1170		if (level == G_RAID_VOLUME_RL_RAID1)
1171			size -= (size % sectorsize);
1172		else if (level == G_RAID_VOLUME_RL_RAID1E &&
1173		    (numdisks & 1) != 0)
1174			size -= (size % (2 * strip));
1175		else
1176			size -= (size % strip);
1177		if (size <= 0) {
1178			gctl_error(req, "Size too small.");
1179			return (-13);
1180		}
1181
1182		if (level == G_RAID_VOLUME_RL_RAID0 ||
1183		    level == G_RAID_VOLUME_RL_CONCAT ||
1184		    level == G_RAID_VOLUME_RL_SINGLE)
1185			volsize = size * numdisks;
1186		else if (level == G_RAID_VOLUME_RL_RAID1)
1187			volsize = size;
1188		else if (level == G_RAID_VOLUME_RL_RAID5)
1189			volsize = size * (numdisks - 1);
1190		else { /* RAID1E */
1191			volsize = ((size * numdisks) / strip / 2) *
1192			    strip;
1193		}
1194		if (volsize > 0xffffffffllu * sectorsize) {
1195			gctl_error(req, "Size too big.");
1196			return (-14);
1197		}
1198
1199		/* We have all we need, create things: volume, ... */
1200		mdi->mdio_total_disks = numdisks;
1201		mdi->mdio_started = 1;
1202		vol = g_raid_create_volume(sc, volname, -1);
1203		vol->v_md_data = (void *)(intptr_t)0;
1204		vol->v_raid_level = level;
1205		vol->v_raid_level_qualifier = qual;
1206		vol->v_strip_size = strip;
1207		vol->v_disks_count = numdisks;
1208		vol->v_mediasize = volsize;
1209		vol->v_sectorsize = sectorsize;
1210		g_raid_start_volume(vol);
1211
1212		/* , and subdisks. */
1213		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1214			pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
1215			sd = &vol->v_subdisks[pd->pd_disk_pos];
1216			sd->sd_disk = disk;
1217			sd->sd_offset = 0;
1218			sd->sd_size = size;
1219			TAILQ_INSERT_TAIL(&disk->d_subdisks, sd, sd_next);
1220			if (sd->sd_disk->d_consumer != NULL) {
1221				g_raid_change_disk_state(disk,
1222				    G_RAID_DISK_S_ACTIVE);
1223				g_raid_change_subdisk_state(sd,
1224				    G_RAID_SUBDISK_S_ACTIVE);
1225				g_raid_event_send(sd, G_RAID_SUBDISK_E_NEW,
1226				    G_RAID_EVENT_SUBDISK);
1227			} else {
1228				g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
1229			}
1230		}
1231
1232		/* Write metadata based on created entities. */
1233		G_RAID_DEBUG1(0, sc, "Array started.");
1234		g_raid_md_write_nvidia(md, NULL, NULL, NULL);
1235
1236		/* Pickup any STALE/SPARE disks to refill array if needed. */
1237		g_raid_md_nvidia_refill(sc);
1238
1239		g_raid_event_send(vol, G_RAID_VOLUME_E_START,
1240		    G_RAID_EVENT_VOLUME);
1241		return (0);
1242	}
1243	if (strcmp(verb, "delete") == 0) {
1244		/* Check if some volume is still open. */
1245		force = gctl_get_paraml(req, "force", sizeof(*force));
1246		if (force != NULL && *force == 0 &&
1247		    g_raid_nopens(sc) != 0) {
1248			gctl_error(req, "Some volume is still open.");
1249			return (-4);
1250		}
1251
1252		TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1253			if (disk->d_consumer)
1254				nvidia_meta_erase(disk->d_consumer);
1255		}
1256		g_raid_destroy_node(sc, 0);
1257		return (0);
1258	}
1259	if (strcmp(verb, "remove") == 0 ||
1260	    strcmp(verb, "fail") == 0) {
1261		if (*nargs < 2) {
1262			gctl_error(req, "Invalid number of arguments.");
1263			return (-1);
1264		}
1265		for (i = 1; i < *nargs; i++) {
1266			snprintf(arg, sizeof(arg), "arg%d", i);
1267			diskname = gctl_get_asciiparam(req, arg);
1268			if (diskname == NULL) {
1269				gctl_error(req, "No disk name (%s).", arg);
1270				error = -2;
1271				break;
1272			}
1273			if (strncmp(diskname, _PATH_DEV, 5) == 0)
1274				diskname += 5;
1275
1276			TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1277				if (disk->d_consumer != NULL &&
1278				    disk->d_consumer->provider != NULL &&
1279				    strcmp(disk->d_consumer->provider->name,
1280				     diskname) == 0)
1281					break;
1282			}
1283			if (disk == NULL) {
1284				gctl_error(req, "Disk '%s' not found.",
1285				    diskname);
1286				error = -3;
1287				break;
1288			}
1289
1290			if (strcmp(verb, "fail") == 0) {
1291				g_raid_md_fail_disk_nvidia(md, NULL, disk);
1292				continue;
1293			}
1294
1295			pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
1296
1297			/* Erase metadata on deleting disk. */
1298			nvidia_meta_erase(disk->d_consumer);
1299
1300			/* If disk was assigned, just update statuses. */
1301			if (pd->pd_disk_pos >= 0) {
1302				g_raid_change_disk_state(disk, G_RAID_DISK_S_OFFLINE);
1303				g_raid_kill_consumer(sc, disk->d_consumer);
1304				disk->d_consumer = NULL;
1305				TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
1306					g_raid_change_subdisk_state(sd,
1307					    G_RAID_SUBDISK_S_NONE);
1308					g_raid_event_send(sd, G_RAID_SUBDISK_E_DISCONNECTED,
1309					    G_RAID_EVENT_SUBDISK);
1310				}
1311			} else {
1312				/* Otherwise -- delete. */
1313				g_raid_change_disk_state(disk, G_RAID_DISK_S_NONE);
1314				g_raid_destroy_disk(disk);
1315			}
1316		}
1317
1318		/* Write updated metadata to remaining disks. */
1319		g_raid_md_write_nvidia(md, NULL, NULL, NULL);
1320
1321		/* Check if anything left except placeholders. */
1322		if (g_raid_ndisks(sc, -1) ==
1323		    g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
1324			g_raid_destroy_node(sc, 0);
1325		else
1326			g_raid_md_nvidia_refill(sc);
1327		return (error);
1328	}
1329	if (strcmp(verb, "insert") == 0) {
1330		if (*nargs < 2) {
1331			gctl_error(req, "Invalid number of arguments.");
1332			return (-1);
1333		}
1334		update = 0;
1335		for (i = 1; i < *nargs; i++) {
1336			/* Get disk name. */
1337			snprintf(arg, sizeof(arg), "arg%d", i);
1338			diskname = gctl_get_asciiparam(req, arg);
1339			if (diskname == NULL) {
1340				gctl_error(req, "No disk name (%s).", arg);
1341				error = -3;
1342				break;
1343			}
1344
1345			/* Try to find provider with specified name. */
1346			g_topology_lock();
1347			cp = g_raid_open_consumer(sc, diskname);
1348			if (cp == NULL) {
1349				gctl_error(req, "Can't open disk '%s'.",
1350				    diskname);
1351				g_topology_unlock();
1352				error = -4;
1353				break;
1354			}
1355			pp = cp->provider;
1356
1357			pd = malloc(sizeof(*pd), M_MD_NVIDIA, M_WAITOK | M_ZERO);
1358			pd->pd_disk_pos = -3;
1359			pd->pd_disk_size = pp->mediasize;
1360
1361			disk = g_raid_create_disk(sc);
1362			disk->d_consumer = cp;
1363			disk->d_md_data = (void *)pd;
1364			cp->private = disk;
1365			g_topology_unlock();
1366
1367			g_raid_get_disk_info(disk);
1368
1369			/* Welcome the "new" disk. */
1370			update += g_raid_md_nvidia_start_disk(disk);
1371			if (disk->d_state != G_RAID_DISK_S_SPARE &&
1372			    disk->d_state != G_RAID_DISK_S_ACTIVE) {
1373				gctl_error(req, "Disk '%s' doesn't fit.",
1374				    diskname);
1375				g_raid_destroy_disk(disk);
1376				error = -8;
1377				break;
1378			}
1379		}
1380
1381		/* Write new metadata if we changed something. */
1382		if (update)
1383			g_raid_md_write_nvidia(md, NULL, NULL, NULL);
1384		return (error);
1385	}
1386	gctl_error(req, "Command '%s' is not supported.", verb);
1387	return (-100);
1388}
1389
1390static int
1391g_raid_md_write_nvidia(struct g_raid_md_object *md, struct g_raid_volume *tvol,
1392    struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1393{
1394	struct g_raid_softc *sc;
1395	struct g_raid_volume *vol;
1396	struct g_raid_subdisk *sd;
1397	struct g_raid_disk *disk;
1398	struct g_raid_md_nvidia_object *mdi;
1399	struct g_raid_md_nvidia_perdisk *pd;
1400	struct nvidia_raid_conf *meta;
1401	int i, spares;
1402
1403	sc = md->mdo_softc;
1404	mdi = (struct g_raid_md_nvidia_object *)md;
1405
1406	if (sc->sc_stopping == G_RAID_DESTROY_HARD)
1407		return (0);
1408
1409	/* There is only one volume. */
1410	vol = TAILQ_FIRST(&sc->sc_volumes);
1411
1412	/* Fill global fields. */
1413	meta = malloc(sizeof(*meta), M_MD_NVIDIA, M_WAITOK | M_ZERO);
1414	if (mdi->mdio_meta)
1415		memcpy(meta, mdi->mdio_meta, sizeof(*meta));
1416	memcpy(meta->nvidia_id, NVIDIA_MAGIC, sizeof(NVIDIA_MAGIC) - 1);
1417	meta->config_size = 30;
1418	meta->version = 0x0064;
1419	meta->total_sectors = vol->v_mediasize / vol->v_sectorsize;
1420	meta->sector_size = vol->v_sectorsize;
1421	nvidia_meta_put_name(meta, vol->v_name);
1422	meta->magic_0 = NVIDIA_MAGIC0;
1423	memcpy(&meta->volume_id, &mdi->mdio_volume_id, 16);
1424	meta->state = NVIDIA_S_IDLE;
1425	if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
1426		meta->array_width = 1;
1427	else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1428		meta->array_width = vol->v_disks_count / 2;
1429	else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
1430		meta->array_width = vol->v_disks_count - 1;
1431	else
1432		meta->array_width = vol->v_disks_count;
1433	meta->total_disks = vol->v_disks_count;
1434	meta->orig_array_width = meta->array_width;
1435	if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID0)
1436		meta->type = NVIDIA_T_RAID0;
1437	else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1)
1438		meta->type = NVIDIA_T_RAID1;
1439	else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID1E)
1440		meta->type = NVIDIA_T_RAID01;
1441	else if (vol->v_raid_level == G_RAID_VOLUME_RL_CONCAT ||
1442	    vol->v_raid_level == G_RAID_VOLUME_RL_SINGLE)
1443		meta->type = NVIDIA_T_CONCAT;
1444	else if (vol->v_raid_level_qualifier == G_RAID_VOLUME_RLQ_R5LA)
1445		meta->type = NVIDIA_T_RAID5;
1446	else
1447		meta->type = NVIDIA_T_RAID5_SYM;
1448	meta->strip_sectors = vol->v_strip_size / vol->v_sectorsize;
1449	meta->strip_bytes = vol->v_strip_size;
1450	meta->strip_shift = ffs(meta->strip_sectors) - 1;
1451	meta->strip_mask = meta->strip_sectors - 1;
1452	meta->stripe_sectors = meta->strip_sectors * meta->orig_array_width;
1453	meta->stripe_bytes = meta->stripe_sectors * vol->v_sectorsize;
1454	meta->rebuild_lba = 0;
1455	meta->orig_type = meta->type;
1456	meta->orig_total_sectors = meta->total_sectors;
1457	meta->status = 0;
1458
1459	for (i = 0; i < vol->v_disks_count; i++) {
1460		sd = &vol->v_subdisks[i];
1461		if ((sd->sd_state == G_RAID_SUBDISK_S_STALE ||
1462		     sd->sd_state == G_RAID_SUBDISK_S_RESYNC ||
1463		     vol->v_dirty) &&
1464		     meta->state != NVIDIA_S_REBUILD)
1465			meta->state = NVIDIA_S_SYNC;
1466		else if (sd->sd_state == G_RAID_SUBDISK_S_NEW ||
1467		     sd->sd_state == G_RAID_SUBDISK_S_REBUILD)
1468			meta->state = NVIDIA_S_REBUILD;
1469	}
1470
1471	/* We are done. Print meta data and store them to disks. */
1472	if (mdi->mdio_meta != NULL)
1473		free(mdi->mdio_meta, M_MD_NVIDIA);
1474	mdi->mdio_meta = meta;
1475	spares = 0;
1476	TAILQ_FOREACH(disk, &sc->sc_disks, d_next) {
1477		pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
1478		if (disk->d_state != G_RAID_DISK_S_ACTIVE &&
1479		    disk->d_state != G_RAID_DISK_S_SPARE)
1480			continue;
1481		if (pd->pd_meta != NULL) {
1482			free(pd->pd_meta, M_MD_NVIDIA);
1483			pd->pd_meta = NULL;
1484		}
1485		pd->pd_meta = nvidia_meta_copy(meta);
1486		if ((sd = TAILQ_FIRST(&disk->d_subdisks)) != NULL) {
1487			/* For RAID0+1 we need to translate order. */
1488			pd->pd_meta->disk_number =
1489			    nvidia_meta_translate_disk(meta, sd->sd_pos);
1490			if (sd->sd_state != G_RAID_SUBDISK_S_ACTIVE) {
1491				pd->pd_meta->disk_status = 0x100;
1492				pd->pd_meta->rebuild_lba =
1493				    sd->sd_rebuild_pos / vol->v_sectorsize *
1494				    meta->array_width;
1495			}
1496		} else
1497			pd->pd_meta->disk_number = meta->total_disks + spares++;
1498		G_RAID_DEBUG(1, "Writing NVIDIA metadata to %s",
1499		    g_raid_get_diskname(disk));
1500		g_raid_md_nvidia_print(pd->pd_meta);
1501		nvidia_meta_write(disk->d_consumer, pd->pd_meta);
1502	}
1503	return (0);
1504}
1505
1506static int
1507g_raid_md_fail_disk_nvidia(struct g_raid_md_object *md,
1508    struct g_raid_subdisk *tsd, struct g_raid_disk *tdisk)
1509{
1510	struct g_raid_softc *sc;
1511	struct g_raid_md_nvidia_perdisk *pd;
1512	struct g_raid_subdisk *sd;
1513
1514	sc = md->mdo_softc;
1515	pd = (struct g_raid_md_nvidia_perdisk *)tdisk->d_md_data;
1516
1517	/* We can't fail disk that is not a part of array now. */
1518	if (pd->pd_disk_pos < 0)
1519		return (-1);
1520
1521	/* Erase metadata to prevent disks's later resurrection. */
1522	if (tdisk->d_consumer)
1523		nvidia_meta_erase(tdisk->d_consumer);
1524
1525	/* Change states. */
1526	g_raid_change_disk_state(tdisk, G_RAID_DISK_S_FAILED);
1527	TAILQ_FOREACH(sd, &tdisk->d_subdisks, sd_next) {
1528		g_raid_change_subdisk_state(sd,
1529		    G_RAID_SUBDISK_S_FAILED);
1530		g_raid_event_send(sd, G_RAID_SUBDISK_E_FAILED,
1531		    G_RAID_EVENT_SUBDISK);
1532	}
1533
1534	/* Write updated metadata to remaining disks. */
1535	g_raid_md_write_nvidia(md, NULL, NULL, tdisk);
1536
1537	/* Check if anything left except placeholders. */
1538	if (g_raid_ndisks(sc, -1) ==
1539	    g_raid_ndisks(sc, G_RAID_DISK_S_OFFLINE))
1540		g_raid_destroy_node(sc, 0);
1541	else
1542		g_raid_md_nvidia_refill(sc);
1543	return (0);
1544}
1545
1546static int
1547g_raid_md_free_disk_nvidia(struct g_raid_md_object *md,
1548    struct g_raid_disk *disk)
1549{
1550	struct g_raid_md_nvidia_perdisk *pd;
1551
1552	pd = (struct g_raid_md_nvidia_perdisk *)disk->d_md_data;
1553	if (pd->pd_meta != NULL) {
1554		free(pd->pd_meta, M_MD_NVIDIA);
1555		pd->pd_meta = NULL;
1556	}
1557	free(pd, M_MD_NVIDIA);
1558	disk->d_md_data = NULL;
1559	return (0);
1560}
1561
1562static int
1563g_raid_md_free_nvidia(struct g_raid_md_object *md)
1564{
1565	struct g_raid_md_nvidia_object *mdi;
1566
1567	mdi = (struct g_raid_md_nvidia_object *)md;
1568	if (!mdi->mdio_started) {
1569		mdi->mdio_started = 0;
1570		callout_stop(&mdi->mdio_start_co);
1571		G_RAID_DEBUG1(1, md->mdo_softc,
1572		    "root_mount_rel %p", mdi->mdio_rootmount);
1573		root_mount_rel(mdi->mdio_rootmount);
1574		mdi->mdio_rootmount = NULL;
1575	}
1576	if (mdi->mdio_meta != NULL) {
1577		free(mdi->mdio_meta, M_MD_NVIDIA);
1578		mdi->mdio_meta = NULL;
1579	}
1580	return (0);
1581}
1582
1583G_RAID_MD_DECLARE(nvidia, "NVIDIA");
1584