1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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
29 /*
30 * Disk driver for Compaq SMART RAID adapters.
31 */
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37
38 #include <sys/bio.h>
39 #include <sys/bus.h>
40 #include <sys/conf.h>
41 #include <sys/cons.h>
42 #include <sys/lock.h>
43 #include <sys/mutex.h>
44
45 #include <machine/bus.h>
46 #include <sys/rman.h>
47
48 #include <vm/vm.h>
49 #include <vm/pmap.h>
50 #include <machine/md_var.h>
51
52 #include <geom/geom_disk.h>
53
54 #include <dev/ida/idareg.h>
55 #include <dev/ida/idavar.h>
56
57 /* prototypes */
58 static int idad_probe(device_t dev);
59 static int idad_attach(device_t dev);
60 static int idad_detach(device_t dev);
61
62 static d_strategy_t idad_strategy;
63 static dumper_t idad_dump;
64
65 static device_method_t idad_methods[] = {
66 DEVMETHOD(device_probe, idad_probe),
67 DEVMETHOD(device_attach, idad_attach),
68 DEVMETHOD(device_detach, idad_detach),
69 { 0, 0 }
70 };
71
72 static driver_t idad_driver = {
73 "idad",
74 idad_methods,
75 sizeof(struct idad_softc)
76 };
77
78 DRIVER_MODULE(idad, ida, idad_driver, 0, 0);
79
80 /*
81 * Read/write routine for a buffer. Finds the proper unit, range checks
82 * arguments, and schedules the transfer. Does not wait for the transfer
83 * to complete. Multi-page transfers are supported. All I/O requests must
84 * be a multiple of a sector in length.
85 */
86 static void
idad_strategy(struct bio * bp)87 idad_strategy(struct bio *bp)
88 {
89 struct idad_softc *drv;
90
91 drv = bp->bio_disk->d_drv1;
92 if (drv == NULL) {
93 bp->bio_error = EINVAL;
94 goto bad;
95 }
96
97 /*
98 * software write protect check
99 */
100 if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) {
101 bp->bio_error = EROFS;
102 goto bad;
103 }
104
105 if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) {
106 bp->bio_error = EOPNOTSUPP;
107 goto bad;
108 }
109
110 bp->bio_driver1 = drv;
111 ida_submit_buf(drv->controller, bp);
112 return;
113
114 bad:
115 bp->bio_flags |= BIO_ERROR;
116
117 /*
118 * Correctly set the buf to indicate a completed transfer
119 */
120 bp->bio_resid = bp->bio_bcount;
121 biodone(bp);
122 return;
123 }
124
125 static int
idad_dump(void * arg,void * virtual,off_t offset,size_t length)126 idad_dump(void *arg, void *virtual, off_t offset, size_t length)
127 {
128
129 struct idad_softc *drv;
130 int error = 0;
131 struct disk *dp;
132
133 dp = arg;
134 drv = dp->d_drv1;
135 if (drv == NULL)
136 return (ENXIO);
137
138 drv->controller->flags &= ~IDA_INTERRUPTS;
139
140 if (length > 0) {
141 error = ida_command(drv->controller, CMD_WRITE, virtual,
142 length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT);
143 }
144 drv->controller->flags |= IDA_INTERRUPTS;
145 return (error);
146 }
147
148 void
idad_intr(struct bio * bp)149 idad_intr(struct bio *bp)
150 {
151
152 if (bp->bio_flags & BIO_ERROR)
153 bp->bio_error = EIO;
154 else
155 bp->bio_resid = 0;
156
157 biodone(bp);
158 }
159
160 static int
idad_probe(device_t dev)161 idad_probe(device_t dev)
162 {
163
164 device_set_desc(dev, "Compaq Logical Drive");
165 return (0);
166 }
167
168 static int
idad_attach(device_t dev)169 idad_attach(device_t dev)
170 {
171 struct ida_drive_info dinfo;
172 struct idad_softc *drv;
173 device_t parent;
174 int error;
175
176 drv = (struct idad_softc *)device_get_softc(dev);
177 parent = device_get_parent(dev);
178 drv->dev = dev;
179 drv->controller = (struct ida_softc *)device_get_softc(parent);
180 drv->unit = device_get_unit(dev);
181 drv->drive = (intptr_t)device_get_ivars(dev);
182
183 mtx_lock(&drv->controller->lock);
184 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
185 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
186 mtx_unlock(&drv->controller->lock);
187 if (error) {
188 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
189 return (ENXIO);
190 }
191
192 drv->cylinders = dinfo.dp.ncylinders;
193 drv->heads = dinfo.dp.nheads;
194 drv->sectors = dinfo.dp.nsectors;
195 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
196 drv->secperunit = dinfo.secperunit;
197
198 /* XXX
199 * other initialization
200 */
201 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
202 drv->secperunit / ((1024 * 1024) / drv->secsize),
203 drv->secperunit, drv->secsize);
204
205 drv->disk = disk_alloc();
206 drv->disk->d_strategy = idad_strategy;
207 drv->disk->d_name = "idad";
208 drv->disk->d_dump = idad_dump;
209 drv->disk->d_sectorsize = drv->secsize;
210 drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize;
211 drv->disk->d_fwsectors = drv->sectors;
212 drv->disk->d_fwheads = drv->heads;
213 drv->disk->d_drv1 = drv;
214 drv->disk->d_maxsize = DFLTPHYS; /* XXX guess? */
215 drv->disk->d_unit = drv->unit;
216 disk_create(drv->disk, DISK_VERSION);
217
218 return (0);
219 }
220
221 static int
idad_detach(device_t dev)222 idad_detach(device_t dev)
223 {
224 struct idad_softc *drv;
225
226 drv = (struct idad_softc *)device_get_softc(dev);
227 disk_destroy(drv->disk);
228 return (0);
229 }
230