1 /*-
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that the following conditions
4 * are met:
5 *
6 * Copyright 1994-2009 The FreeBSD Project.
7 * All rights reserved.
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
17 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY,OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * The views and conclusions contained in the software and documentation
28 * are those of the authors and should not be interpreted as representing
29 * official policies,either expressed or implied, of the FreeBSD Project.
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include "opt_mfi.h"
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/selinfo.h>
41 #include <sys/module.h>
42 #include <sys/malloc.h>
43 #include <sys/sysctl.h>
44 #include <sys/uio.h>
45
46 #include <sys/bio.h>
47 #include <sys/bus.h>
48 #include <sys/conf.h>
49 #include <sys/disk.h>
50 #include <geom/geom_disk.h>
51
52 #include <vm/vm.h>
53 #include <vm/pmap.h>
54
55 #include <machine/md_var.h>
56 #include <machine/bus.h>
57 #include <sys/rman.h>
58
59 #include <dev/mfi/mfireg.h>
60 #include <dev/mfi/mfi_ioctl.h>
61 #include <dev/mfi/mfivar.h>
62
63 static int mfi_syspd_probe(device_t dev);
64 static int mfi_syspd_attach(device_t dev);
65 static int mfi_syspd_detach(device_t dev);
66
67 static disk_open_t mfi_syspd_open;
68 static disk_close_t mfi_syspd_close;
69 static disk_strategy_t mfi_syspd_strategy;
70 static dumper_t mfi_syspd_dump;
71
72 static devclass_t mfi_syspd_devclass;
73
74 static device_method_t mfi_syspd_methods[] = {
75 DEVMETHOD(device_probe, mfi_syspd_probe),
76 DEVMETHOD(device_attach, mfi_syspd_attach),
77 DEVMETHOD(device_detach, mfi_syspd_detach),
78 { 0, 0 }
79 };
80
81 static driver_t mfi_syspd_driver = {
82 "mfisyspd",
83 mfi_syspd_methods,
84 sizeof(struct mfi_system_pd)
85 };
86
87 DRIVER_MODULE(mfisyspd, mfi, mfi_syspd_driver, mfi_syspd_devclass, 0, 0);
88
89 static int
90 mfi_syspd_probe(device_t dev)
91 {
92 return (0);
93 }
94
95 static int
96 mfi_syspd_attach(device_t dev)
97 {
98 struct mfi_system_pd *sc;
99 struct mfi_pd_info *pd_info;
100 struct mfi_system_pending *syspd_pend;
101 uint64_t sectors;
102 uint32_t secsize;
103
104 sc = device_get_softc(dev);
105 pd_info = device_get_ivars(dev);
106 sc->pd_dev = dev;
107 sc->pd_id = pd_info->ref.v.device_id;
108 sc->pd_unit = device_get_unit(dev);
109 sc->pd_info = pd_info;
110 sc->pd_controller = device_get_softc(device_get_parent(dev));
111 sc->pd_flags = 0;
112
113 sectors = pd_info->raw_size;
114 secsize = MFI_SECTOR_LEN;
115 mtx_lock(&sc->pd_controller->mfi_io_lock);
116 TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
117 TAILQ_FOREACH(syspd_pend, &sc->pd_controller->mfi_syspd_pend_tqh,
118 pd_link) {
119 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_pend_tqh,
120 syspd_pend, pd_link);
121 free(syspd_pend, M_MFIBUF);
122 break;
123 }
124 mtx_unlock(&sc->pd_controller->mfi_io_lock);
125 device_printf(dev, "%juMB (%ju sectors) SYSPD volume (deviceid: %d)\n",
126 sectors / (1024 * 1024 / secsize), sectors, sc->pd_id);
127 sc->pd_disk = disk_alloc();
128 sc->pd_disk->d_drv1 = sc;
129 sc->pd_disk->d_maxsize = min(sc->pd_controller->mfi_max_io * secsize,
130 (sc->pd_controller->mfi_max_sge - 1) * PAGE_SIZE);
131 sc->pd_disk->d_name = "mfisyspd";
132 sc->pd_disk->d_open = mfi_syspd_open;
133 sc->pd_disk->d_close = mfi_syspd_close;
134 sc->pd_disk->d_strategy = mfi_syspd_strategy;
135 sc->pd_disk->d_dump = mfi_syspd_dump;
136 sc->pd_disk->d_unit = sc->pd_unit;
137 sc->pd_disk->d_sectorsize = secsize;
138 sc->pd_disk->d_mediasize = sectors * secsize;
139 if (sc->pd_disk->d_mediasize >= (1 * 1024 * 1024)) {
140 sc->pd_disk->d_fwheads = 255;
141 sc->pd_disk->d_fwsectors = 63;
142 } else {
143 sc->pd_disk->d_fwheads = 64;
144 sc->pd_disk->d_fwsectors = 32;
145 }
146 sc->pd_disk->d_flags = DISKFLAG_UNMAPPED_BIO;
147 disk_create(sc->pd_disk, DISK_VERSION);
148
149 device_printf(dev, " SYSPD volume attached\n");
150
151 return (0);
152 }
153
154 static int
155 mfi_syspd_detach(device_t dev)
156 {
157 struct mfi_system_pd *sc;
158
159 sc = device_get_softc(dev);
160 device_printf(dev, "Detaching syspd\n");
161 mtx_lock(&sc->pd_controller->mfi_io_lock);
162 if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) ||
163 (sc->pd_flags & MFI_DISK_FLAGS_OPEN)) &&
164 (sc->pd_controller->mfi_keep_deleted_volumes ||
165 sc->pd_controller->mfi_detaching)) {
166 mtx_unlock(&sc->pd_controller->mfi_io_lock);
167 device_printf(dev, "Cant detach syspd\n");
168 return (EBUSY);
169 }
170 mtx_unlock(&sc->pd_controller->mfi_io_lock);
171
172 disk_destroy(sc->pd_disk);
173 mtx_lock(&sc->pd_controller->mfi_io_lock);
174 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
175 mtx_unlock(&sc->pd_controller->mfi_io_lock);
176 free(sc->pd_info, M_MFIBUF);
177 return (0);
178 }
179
180 static int
181 mfi_syspd_open(struct disk *dp)
182 {
183 struct mfi_system_pd *sc;
184 int error;
185
186 sc = dp->d_drv1;
187 mtx_lock(&sc->pd_controller->mfi_io_lock);
188 if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED)
189 error = ENXIO;
190 else {
191 sc->pd_flags |= MFI_DISK_FLAGS_OPEN;
192 error = 0;
193 }
194 mtx_unlock(&sc->pd_controller->mfi_io_lock);
195 return (error);
196 }
197
198 static int
199 mfi_syspd_close(struct disk *dp)
200 {
201 struct mfi_system_pd *sc;
202
203 sc = dp->d_drv1;
204 mtx_lock(&sc->pd_controller->mfi_io_lock);
205 sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN;
206 mtx_unlock(&sc->pd_controller->mfi_io_lock);
207
208 return (0);
209 }
210
211 int
212 mfi_syspd_disable(struct mfi_system_pd *sc)
213 {
214
215 device_printf(sc->pd_dev, "syspd disable \n");
216 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
217 if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) {
218 if (sc->pd_controller->mfi_delete_busy_volumes)
219 return (0);
220 device_printf(sc->pd_dev,
221 "Unable to delete busy syspd device\n");
222 return (EBUSY);
223 }
224 sc->pd_flags |= MFI_DISK_FLAGS_DISABLED;
225 return (0);
226 }
227
228 void
229 mfi_syspd_enable(struct mfi_system_pd *sc)
230 {
231
232 device_printf(sc->pd_dev, "syspd enable \n");
233 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
234 sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED;
235 }
236
237 static void
238 mfi_syspd_strategy(struct bio *bio)
239 {
240 struct mfi_system_pd *sc;
241 struct mfi_softc *controller;
242
243 sc = bio->bio_disk->d_drv1;
244
245 if (sc == NULL) {
246 bio->bio_error = EINVAL;
247 bio->bio_flags |= BIO_ERROR;
248 bio->bio_resid = bio->bio_bcount;
249 biodone(bio);
250 return;
251 }
252
253 controller = sc->pd_controller;
254 bio->bio_driver1 = (void *)(uintptr_t)sc->pd_id;
255 /* Mark it as system PD IO */
256 bio->bio_driver2 = (void *)MFI_SYS_PD_IO;
257 mtx_lock(&controller->mfi_io_lock);
258 mfi_enqueue_bio(controller, bio);
259 mfi_startio(controller);
260 mtx_unlock(&controller->mfi_io_lock);
261 return;
262 }
263
264 static int
265 mfi_syspd_dump(void *arg, void *virt, vm_offset_t phys, off_t offset,
266 size_t len)
267 {
268 struct mfi_system_pd *sc;
269 struct mfi_softc *parent_sc;
270 struct disk *dp;
271 int error;
272
273 dp = arg;
274 sc = dp->d_drv1;
275 parent_sc = sc->pd_controller;
276
277 if (len > 0) {
278 if ((error = mfi_dump_syspd_blocks(parent_sc,
279 sc->pd_id, offset / MFI_SECTOR_LEN, virt, len)) != 0)
280 return (error);
281 } else {
282 /* mfi_sync_cache(parent_sc, sc->ld_id); */
283 }
284 return (0);
285 }
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