1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1999,2000 Jonathan Lemon
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 /*
32 * Disk driver for Compaq SMART RAID adapters.
33 */
34
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
39
40 #include <sys/bio.h>
41 #include <sys/bus.h>
42 #include <sys/conf.h>
43 #include <sys/cons.h>
44 #include <sys/lock.h>
45 #include <sys/mutex.h>
46
47 #include <machine/bus.h>
48 #include <sys/rman.h>
49
50 #include <vm/vm.h>
51 #include <vm/pmap.h>
52 #include <machine/md_var.h>
53
54 #include <geom/geom_disk.h>
55
56 #include <dev/ida/idareg.h>
57 #include <dev/ida/idavar.h>
58
59 /* prototypes */
60 static int idad_probe(device_t dev);
61 static int idad_attach(device_t dev);
62 static int idad_detach(device_t dev);
63
64 static d_strategy_t idad_strategy;
65 static dumper_t idad_dump;
66
67 static devclass_t idad_devclass;
68
69 static device_method_t idad_methods[] = {
70 DEVMETHOD(device_probe, idad_probe),
71 DEVMETHOD(device_attach, idad_attach),
72 DEVMETHOD(device_detach, idad_detach),
73 { 0, 0 }
74 };
75
76 static driver_t idad_driver = {
77 "idad",
78 idad_methods,
79 sizeof(struct idad_softc)
80 };
81
82 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
83
84 /*
85 * Read/write routine for a buffer. Finds the proper unit, range checks
86 * arguments, and schedules the transfer. Does not wait for the transfer
87 * to complete. Multi-page transfers are supported. All I/O requests must
88 * be a multiple of a sector in length.
89 */
90 static void
idad_strategy(struct bio * bp)91 idad_strategy(struct bio *bp)
92 {
93 struct idad_softc *drv;
94
95 drv = bp->bio_disk->d_drv1;
96 if (drv == NULL) {
97 bp->bio_error = EINVAL;
98 goto bad;
99 }
100
101 /*
102 * software write protect check
103 */
104 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) {
105 bp->bio_error = EROFS;
106 goto bad;
107 }
108
109 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) {
110 bp->bio_error = EOPNOTSUPP;
111 goto bad;
112 }
113
114 bp->bio_driver1 = drv;
115 ida_submit_buf(drv->controller, bp);
116 return;
117
118 bad:
119 bp->bio_flags |= BIO_ERROR;
120
121 /*
122 * Correctly set the buf to indicate a completed transfer
123 */
124 bp->bio_resid = bp->bio_bcount;
125 biodone(bp);
126 return;
127 }
128
129 static int
idad_dump(void * arg,void * virtual,vm_offset_t physical,off_t offset,size_t length)130 idad_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
131 {
132
133 struct idad_softc *drv;
134 int error = 0;
135 struct disk *dp;
136
137 dp = arg;
138 drv = dp->d_drv1;
139 if (drv == NULL)
140 return (ENXIO);
141
142 drv->controller->flags &= ~IDA_INTERRUPTS;
143
144 if (length > 0) {
145 error = ida_command(drv->controller, CMD_WRITE, virtual,
146 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT);
147 }
148 drv->controller->flags |= IDA_INTERRUPTS;
149 return (error);
150 }
151
152 void
idad_intr(struct bio * bp)153 idad_intr(struct bio *bp)
154 {
155 struct idad_softc *drv;
156
157 drv = bp->bio_disk->d_drv1;
158
159 if (bp->bio_flags & BIO_ERROR)
160 bp->bio_error = EIO;
161 else
162 bp->bio_resid = 0;
163
164 biodone(bp);
165 }
166
167 static int
idad_probe(device_t dev)168 idad_probe(device_t dev)
169 {
170
171 device_set_desc(dev, "Compaq Logical Drive");
172 return (0);
173 }
174
175 static int
idad_attach(device_t dev)176 idad_attach(device_t dev)
177 {
178 struct ida_drive_info dinfo;
179 struct idad_softc *drv;
180 device_t parent;
181 int error;
182
183 drv = (struct idad_softc *)device_get_softc(dev);
184 parent = device_get_parent(dev);
185 drv->dev = dev;
186 drv->controller = (struct ida_softc *)device_get_softc(parent);
187 drv->unit = device_get_unit(dev);
188 drv->drive = (intptr_t)device_get_ivars(dev);
189
190 mtx_lock(&drv->controller->lock);
191 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
192 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
193 mtx_unlock(&drv->controller->lock);
194 if (error) {
195 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
196 return (ENXIO);
197 }
198
199 drv->cylinders = dinfo.dp.ncylinders;
200 drv->heads = dinfo.dp.nheads;
201 drv->sectors = dinfo.dp.nsectors;
202 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
203 drv->secperunit = dinfo.secperunit;
204
205 /* XXX
206 * other initialization
207 */
208 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
209 drv->secperunit / ((1024 * 1024) / drv->secsize),
210 drv->secperunit, drv->secsize);
211
212 drv->disk = disk_alloc();
213 drv->disk->d_strategy = idad_strategy;
214 drv->disk->d_name = "idad";
215 drv->disk->d_dump = idad_dump;
216 drv->disk->d_sectorsize = drv->secsize;
217 drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize;
218 drv->disk->d_fwsectors = drv->sectors;
219 drv->disk->d_fwheads = drv->heads;
220 drv->disk->d_drv1 = drv;
221 drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */
222 drv->disk->d_unit = drv->unit;
223 disk_create(drv->disk, DISK_VERSION);
224
225 return (0);
226 }
227
228 static int
idad_detach(device_t dev)229 idad_detach(device_t dev)
230 {
231 struct idad_softc *drv;
232
233 drv = (struct idad_softc *)device_get_softc(dev);
234 disk_destroy(drv->disk);
235 return (0);
236 }
237