1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999 Jonathan Lemon
5 * Copyright (c) 1999 Michael Smith
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 AUTHOR 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 AUTHOR 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
31 #include <sys/cdefs.h>
32 /*
33 * Disk driver for Mylex DAC960 RAID adapters.
34 */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/bio.h>
39 #include <sys/kernel.h>
40 #include <sys/lock.h>
41 #include <sys/module.h>
42 #include <sys/sx.h>
43
44 #include <sys/bus.h>
45 #include <sys/conf.h>
46
47 #include <machine/bus.h>
48 #include <sys/rman.h>
49
50 #include <geom/geom_disk.h>
51
52 #include <dev/mlx/mlxio.h>
53 #include <dev/mlx/mlxvar.h>
54 #include <dev/mlx/mlxreg.h>
55
56 /* prototypes */
57 static int mlxd_probe(device_t dev);
58 static int mlxd_attach(device_t dev);
59 static int mlxd_detach(device_t dev);
60
61 static device_method_t mlxd_methods[] = {
62 DEVMETHOD(device_probe, mlxd_probe),
63 DEVMETHOD(device_attach, mlxd_attach),
64 DEVMETHOD(device_detach, mlxd_detach),
65 { 0, 0 }
66 };
67
68 static driver_t mlxd_driver = {
69 "mlxd",
70 mlxd_methods,
71 sizeof(struct mlxd_softc)
72 };
73
74 DRIVER_MODULE(mlxd, mlx, mlxd_driver, 0, 0);
75
76 static int
mlxd_open(struct disk * dp)77 mlxd_open(struct disk *dp)
78 {
79 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
80
81 debug_called(1);
82
83 if (sc == NULL)
84 return (ENXIO);
85
86 /* controller not active? */
87 MLX_CONFIG_LOCK(sc->mlxd_controller);
88 MLX_IO_LOCK(sc->mlxd_controller);
89 if (sc->mlxd_controller->mlx_state & MLX_STATE_SHUTDOWN) {
90 MLX_IO_UNLOCK(sc->mlxd_controller);
91 MLX_CONFIG_UNLOCK(sc->mlxd_controller);
92 return(ENXIO);
93 }
94
95 sc->mlxd_flags |= MLXD_OPEN;
96 MLX_IO_UNLOCK(sc->mlxd_controller);
97 MLX_CONFIG_UNLOCK(sc->mlxd_controller);
98 return (0);
99 }
100
101 static int
mlxd_close(struct disk * dp)102 mlxd_close(struct disk *dp)
103 {
104 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
105
106 debug_called(1);
107
108 if (sc == NULL)
109 return (ENXIO);
110 MLX_CONFIG_LOCK(sc->mlxd_controller);
111 MLX_IO_LOCK(sc->mlxd_controller);
112 sc->mlxd_flags &= ~MLXD_OPEN;
113 MLX_IO_UNLOCK(sc->mlxd_controller);
114 MLX_CONFIG_UNLOCK(sc->mlxd_controller);
115 return (0);
116 }
117
118 static int
mlxd_ioctl(struct disk * dp,u_long cmd,void * addr,int flag,struct thread * td)119 mlxd_ioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
120 {
121 struct mlxd_softc *sc = (struct mlxd_softc *)dp->d_drv1;
122 int error;
123
124 debug_called(1);
125
126 if (sc == NULL)
127 return (ENXIO);
128
129 if ((error = mlx_submit_ioctl(sc->mlxd_controller, sc->mlxd_drive, cmd, addr, flag, td)) != ENOIOCTL) {
130 debug(0, "mlx_submit_ioctl returned %d\n", error);
131 return(error);
132 }
133 return (ENOTTY);
134 }
135
136 /*
137 * Read/write routine for a buffer. Finds the proper unit, range checks
138 * arguments, and schedules the transfer. Does not wait for the transfer
139 * to complete. Multi-page transfers are supported. All I/O requests must
140 * be a multiple of a sector in length.
141 */
142 static void
mlxd_strategy(struct bio * bp)143 mlxd_strategy(struct bio *bp)
144 {
145 struct mlxd_softc *sc = bp->bio_disk->d_drv1;
146
147 debug_called(1);
148
149 /* bogus disk? */
150 if (sc == NULL) {
151 bp->bio_error = EINVAL;
152 bp->bio_flags |= BIO_ERROR;
153 goto bad;
154 }
155
156 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) {
157 bp->bio_error = EOPNOTSUPP;
158 goto bad;
159 }
160
161 /* XXX may only be temporarily offline - sleep? */
162 MLX_IO_LOCK(sc->mlxd_controller);
163 if (sc->mlxd_drive->ms_state == MLX_SYSD_OFFLINE) {
164 MLX_IO_UNLOCK(sc->mlxd_controller);
165 bp->bio_error = ENXIO;
166 bp->bio_flags |= BIO_ERROR;
167 goto bad;
168 }
169
170 mlx_submit_buf(sc->mlxd_controller, bp);
171 MLX_IO_UNLOCK(sc->mlxd_controller);
172 return;
173
174 bad:
175 /*
176 * Correctly set the bio to indicate a failed transfer.
177 */
178 bp->bio_resid = bp->bio_bcount;
179 biodone(bp);
180 return;
181 }
182
183 void
mlxd_intr(struct bio * bp)184 mlxd_intr(struct bio *bp)
185 {
186
187 debug_called(1);
188
189 if (bp->bio_flags & BIO_ERROR)
190 bp->bio_error = EIO;
191 else
192 bp->bio_resid = 0;
193
194 biodone(bp);
195 }
196
197 static int
mlxd_probe(device_t dev)198 mlxd_probe(device_t dev)
199 {
200
201 debug_called(1);
202
203 device_set_desc(dev, "Mylex System Drive");
204 return (0);
205 }
206
207 static int
mlxd_attach(device_t dev)208 mlxd_attach(device_t dev)
209 {
210 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
211 device_t parent;
212 char *state;
213 int s1, s2;
214
215 debug_called(1);
216
217 parent = device_get_parent(dev);
218 sc->mlxd_controller = (struct mlx_softc *)device_get_softc(parent);
219 sc->mlxd_unit = device_get_unit(dev);
220 sc->mlxd_drive = device_get_ivars(dev);
221 sc->mlxd_dev = dev;
222
223 switch(sc->mlxd_drive->ms_state) {
224 case MLX_SYSD_ONLINE:
225 state = "online";
226 break;
227 case MLX_SYSD_CRITICAL:
228 state = "critical";
229 break;
230 case MLX_SYSD_OFFLINE:
231 state = "offline";
232 break;
233 default:
234 state = "unknown state";
235 }
236
237 device_printf(dev, "%uMB (%u sectors) RAID %d (%s)\n",
238 sc->mlxd_drive->ms_size / ((1024 * 1024) / MLX_BLKSIZE),
239 sc->mlxd_drive->ms_size, sc->mlxd_drive->ms_raidlevel, state);
240
241 sc->mlxd_disk = disk_alloc();
242 sc->mlxd_disk->d_open = mlxd_open;
243 sc->mlxd_disk->d_close = mlxd_close;
244 sc->mlxd_disk->d_ioctl = mlxd_ioctl;
245 sc->mlxd_disk->d_strategy = mlxd_strategy;
246 sc->mlxd_disk->d_name = "mlxd";
247 sc->mlxd_disk->d_unit = sc->mlxd_unit;
248 sc->mlxd_disk->d_drv1 = sc;
249 sc->mlxd_disk->d_sectorsize = MLX_BLKSIZE;
250 sc->mlxd_disk->d_mediasize = MLX_BLKSIZE * (off_t)sc->mlxd_drive->ms_size;
251 sc->mlxd_disk->d_fwsectors = sc->mlxd_drive->ms_sectors;
252 sc->mlxd_disk->d_fwheads = sc->mlxd_drive->ms_heads;
253
254 /*
255 * Set maximum I/O size to the lesser of the recommended maximum and the practical
256 * maximum except on v2 cards where the maximum is set to 8 pages.
257 */
258 if (sc->mlxd_controller->mlx_iftype == MLX_IFTYPE_2)
259 sc->mlxd_disk->d_maxsize = 8 * MLX_PAGE_SIZE;
260 else {
261 s1 = sc->mlxd_controller->mlx_enq2->me_maxblk * MLX_BLKSIZE;
262 s2 = (sc->mlxd_controller->mlx_enq2->me_max_sg - 1) * MLX_PAGE_SIZE;
263 sc->mlxd_disk->d_maxsize = imin(s1, s2);
264 }
265
266 disk_create(sc->mlxd_disk, DISK_VERSION);
267
268 return (0);
269 }
270
271 static int
mlxd_detach(device_t dev)272 mlxd_detach(device_t dev)
273 {
274 struct mlxd_softc *sc = (struct mlxd_softc *)device_get_softc(dev);
275
276 debug_called(1);
277
278 disk_destroy(sc->mlxd_disk);
279
280 return(0);
281 }
282
283