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
58static int	mfi_disk_probe(device_t dev);
59static int	mfi_disk_attach(device_t dev);
60static int	mfi_disk_detach(device_t dev);
61
62static disk_open_t	mfi_disk_open;
63static disk_close_t	mfi_disk_close;
64static disk_strategy_t	mfi_disk_strategy;
65static dumper_t		mfi_disk_dump;
66
67static devclass_t	mfi_disk_devclass;
68
69static 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
76static driver_t mfi_disk_driver = {
77	"mfid",
78	mfi_disk_methods,
79	sizeof(struct mfi_disk)
80};
81
82DRIVER_MODULE(mfid, mfi, mfi_disk_driver, mfi_disk_devclass, 0, 0);
83
84static int
85mfi_disk_probe(device_t dev)
86{
87
88	return (0);
89}
90
91static int
92mfi_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
178static int
179mfi_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
203static int
204mfi_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
222static int
223mfi_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
235int
236mfi_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
250void
251mfi_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
258static void
259mfi_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
300void
301mfi_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
320static int
321mfi_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}
342