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
93 return (0);
94 }
95
96 static int
97 mfi_syspd_attach(device_t dev)
98 {
99 struct mfi_system_pd *sc;
100 struct mfi_pd_info *pd_info;
101 uint64_t sectors;
102 uint32_t secsize;
103
104 sc = device_get_softc(dev);
105 pd_info = device_get_ivars(dev);
106
107 sc->pd_dev = dev;
108 sc->pd_id = pd_info->ref.v.device_id;
109 sc->pd_unit = device_get_unit(dev);
110 sc->pd_info = pd_info;
111 sc->pd_controller = device_get_softc(device_get_parent(dev));
112 sc->pd_flags = 0;
113
114 sectors = pd_info->raw_size;
115 secsize = MFI_SECTOR_LEN;
116 mtx_lock(&sc->pd_controller->mfi_io_lock);
117 TAILQ_INSERT_TAIL(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
118 mtx_unlock(&sc->pd_controller->mfi_io_lock);
119 device_printf(dev, "%juMB (%ju sectors) SYSPD volume (deviceid: %d)\n",
120 sectors / (1024 * 1024 / secsize), sectors, sc->pd_id);
121 sc->pd_disk = disk_alloc();
122 sc->pd_disk->d_drv1 = sc;
123 sc->pd_disk->d_maxsize = sc->pd_controller->mfi_max_io * secsize;
124 sc->pd_disk->d_name = "mfisyspd";
125 sc->pd_disk->d_open = mfi_syspd_open;
126 sc->pd_disk->d_close = mfi_syspd_close;
127 sc->pd_disk->d_strategy = mfi_syspd_strategy;
128 sc->pd_disk->d_dump = mfi_syspd_dump;
129 sc->pd_disk->d_unit = sc->pd_unit;
130 sc->pd_disk->d_sectorsize = secsize;
131 sc->pd_disk->d_mediasize = sectors * secsize;
132 if (sc->pd_disk->d_mediasize >= (1 * 1024 * 1024)) {
133 sc->pd_disk->d_fwheads = 255;
134 sc->pd_disk->d_fwsectors = 63;
135 } else {
136 sc->pd_disk->d_fwheads = 64;
137 sc->pd_disk->d_fwsectors = 32;
138 }
139 disk_create(sc->pd_disk, DISK_VERSION);
140
141 device_printf(dev, " SYSPD volume attached\n");
142 return (0);
143 }
144
145 static int
146 mfi_syspd_detach(device_t dev)
147 {
148 struct mfi_system_pd *sc;
149
150 sc = device_get_softc(dev);
151 device_printf(dev, "Detaching syspd\n");
152 mtx_lock(&sc->pd_controller->mfi_io_lock);
153 if (((sc->pd_disk->d_flags & DISKFLAG_OPEN) ||
154 (sc->pd_flags & MFI_DISK_FLAGS_OPEN)) &&
155 (sc->pd_controller->mfi_keep_deleted_volumes ||
156 sc->pd_controller->mfi_detaching)) {
157 mtx_unlock(&sc->pd_controller->mfi_io_lock);
158 device_printf(dev, "Cant detach syspd\n");
159 return (EBUSY);
160 }
161 mtx_unlock(&sc->pd_controller->mfi_io_lock);
162
163 disk_destroy(sc->pd_disk);
164 mtx_lock(&sc->pd_controller->mfi_io_lock);
165 TAILQ_REMOVE(&sc->pd_controller->mfi_syspd_tqh, sc, pd_link);
166 mtx_unlock(&sc->pd_controller->mfi_io_lock);
167 free(sc->pd_info, M_MFIBUF);
168 return (0);
169 }
170
171 static int
172 mfi_syspd_open(struct disk *dp)
173 {
174 struct mfi_system_pd *sc;
175 int error;
176
177 sc = dp->d_drv1;
178 mtx_lock(&sc->pd_controller->mfi_io_lock);
179 if (sc->pd_flags & MFI_DISK_FLAGS_DISABLED)
180 error = ENXIO;
181 else {
182 sc->pd_flags |= MFI_DISK_FLAGS_OPEN;
183 error = 0;
184 }
185 mtx_unlock(&sc->pd_controller->mfi_io_lock);
186 return (error);
187 }
188
189 static int
190 mfi_syspd_close(struct disk *dp)
191 {
192 struct mfi_system_pd *sc;
193
194 sc = dp->d_drv1;
195 mtx_lock(&sc->pd_controller->mfi_io_lock);
196 sc->pd_flags &= ~MFI_DISK_FLAGS_OPEN;
197 mtx_unlock(&sc->pd_controller->mfi_io_lock);
198
199 return (0);
200 }
201
202 int
203 mfi_syspd_disable(struct mfi_system_pd *sc)
204 {
205
206 device_printf(sc->pd_dev, "syspd disable \n");
207 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
208 if (sc->pd_flags & MFI_DISK_FLAGS_OPEN) {
209 if (sc->pd_controller->mfi_delete_busy_volumes)
210 return (0);
211 device_printf(sc->pd_dev,
212 "Unable to delete busy syspd device\n");
213 return (EBUSY);
214 }
215 sc->pd_flags |= MFI_DISK_FLAGS_DISABLED;
216 return (0);
217 }
218
219 void
220 mfi_syspd_enable(struct mfi_system_pd *sc)
221 {
222
223 device_printf(sc->pd_dev, "syspd enable \n");
224 mtx_assert(&sc->pd_controller->mfi_io_lock, MA_OWNED);
225 sc->pd_flags &= ~MFI_DISK_FLAGS_DISABLED;
226 }
227
228 static void
229 mfi_syspd_strategy(struct bio *bio)
230 {
231 struct mfi_system_pd *sc;
232 struct mfi_softc *controller;
233
234 sc = bio->bio_disk->d_drv1;
235
236 if (sc == NULL) {
237 bio->bio_error = EINVAL;
238 bio->bio_flags |= BIO_ERROR;
239 bio->bio_resid = bio->bio_bcount;
240 biodone(bio);
241 return;
242 }
243
244 controller = sc->pd_controller;
245 bio->bio_driver1 = (void *)(uintptr_t)sc->pd_id;
246 /* Mark it as system PD IO */
247 bio->bio_driver2 = (void *)MFI_SYS_PD_IO;
248 mtx_lock(&controller->mfi_io_lock);
249 mfi_enqueue_bio(controller, bio);
250 mfi_startio(controller);
251 mtx_unlock(&controller->mfi_io_lock);
252 return;
253 }
254
255 static int
256 mfi_syspd_dump(void *arg, void *virt, vm_offset_t phys, off_t offset,
257 size_t len)
258 {
259 struct mfi_system_pd *sc;
260 struct mfi_softc *parent_sc;
261 struct disk *dp;
262 int error;
263
264 dp = arg;
265 sc = dp->d_drv1;
266 parent_sc = sc->pd_controller;
267
268 if (len > 0) {
269 if ((error = mfi_dump_syspd_blocks(parent_sc,
270 sc->pd_id, offset / MFI_SECTOR_LEN, virt, len)) != 0)
271 return (error);
272 } else {
273 /* mfi_sync_cache(parent_sc, sc->ld_id); */
274 }
275 return (0);
276 }
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