2 * Copyright (c) 1999,2000 Jonathan Lemon
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/dev/ida/ida_disk.c,v 1.12.2.6 2001/11/27 20:21:02 ps Exp $
27 * $DragonFly: src/sys/dev/raid/ida/ida_disk.c,v 1.16 2007/06/17 23:50:16 dillon Exp $
31 * Disk driver for Compaq SMART RAID adapters.
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/malloc.h>
37 #include <sys/kernel.h>
43 #include <sys/devicestat.h>
45 #include <sys/dtype.h>
47 #include <sys/thread2.h>
49 #include <machine/clock.h>
50 #include <machine/md_var.h>
59 static int idad_probe(device_t dev);
60 static int idad_attach(device_t dev);
61 static int idad_detach(device_t dev);
63 static d_open_t idad_open;
64 static d_close_t idad_close;
65 static d_strategy_t idad_strategy;
66 static d_dump_t idad_dump;
68 #define IDAD_BDEV_MAJOR 29
69 #define IDAD_CDEV_MAJOR 109
71 static struct dev_ops id_ops = {
72 { "idad", IDAD_CDEV_MAJOR, D_DISK },
74 .d_close = idad_close,
77 .d_strategy = idad_strategy,
81 static devclass_t idad_devclass;
83 static device_method_t idad_methods[] = {
84 DEVMETHOD(device_probe, idad_probe),
85 DEVMETHOD(device_attach, idad_attach),
86 DEVMETHOD(device_detach, idad_detach),
90 static driver_t idad_driver = {
93 sizeof(struct idad_softc)
96 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
98 static __inline struct idad_softc *
99 idad_getsoftc(cdev_t dev)
102 return ((struct idad_softc *)dev->si_drv1);
106 idad_open(struct dev_open_args *ap)
108 cdev_t dev = ap->a_head.a_dev;
109 struct idad_softc *drv;
111 drv = idad_getsoftc(dev);
115 bzero(&info, sizeof(info));
116 info.d_media_blksize = drv->secsize; /* mandatory */
117 info.d_media_blocks = drv->secperunit;
119 info.d_secpertrack = drv->sectors; /* optional */
120 info.d_type = DTYPE_SCSI;
121 info.d_nheads = drv->heads;
122 info.d_ncylinders = drv->cylinders;
123 info.d_secpercyl = drv->sectors * drv->heads;
125 disk_setdiskinfo(&drv->disk, &info);
131 idad_close(struct dev_close_args *ap)
133 cdev_t dev = ap->a_head.a_dev;
134 struct idad_softc *drv;
136 drv = idad_getsoftc(dev);
143 * Read/write routine for a buffer. Finds the proper unit, range checks
144 * arguments, and schedules the transfer. Does not wait for the transfer
145 * to complete. Multi-page transfers are supported. All I/O requests must
146 * be a multiple of a sector in length.
149 idad_strategy(struct dev_strategy_args *ap)
151 cdev_t dev = ap->a_head.a_dev;
152 struct bio *bio = ap->a_bio;
153 struct buf *bp = bio->bio_buf;
154 struct idad_softc *drv;
156 drv = idad_getsoftc(dev);
158 bp->b_error = EINVAL;
163 * software write protect check
165 if ((drv->flags & DRV_WRITEPROT) && bp->b_cmd != BUF_CMD_READ) {
171 * If it's a null transfer, return immediately
173 if (bp->b_bcount == 0)
176 bio->bio_driver_info = drv;
178 devstat_start_transaction(&drv->stats);
179 ida_submit_buf(drv->controller, bio);
184 bp->b_flags |= B_ERROR;
188 * Correctly set the buf to indicate a completed transfer
190 bp->b_resid = bp->b_bcount;
196 idad_dump(struct dev_dump_args *ap)
198 cdev_t dev = ap->a_head.a_dev;
199 struct idad_softc *drv;
202 drv = idad_getsoftc(dev);
206 drv->controller->flags &= ~IDA_INTERRUPTS;
208 if (ap->a_length > 0) {
209 error = ida_command(drv->controller, CMD_WRITE, ap->a_virtual,
210 ap->a_length, drv->drive, ap->a_offset / DEV_BSIZE, DMA_DATA_OUT);
212 drv->controller->flags |= IDA_INTERRUPTS;
218 idad_intr(struct bio *bio)
220 struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info;
221 struct buf *bp = bio->bio_buf;
223 if (bp->b_flags & B_ERROR)
228 devstat_end_transaction_buf(&drv->stats, bp);
233 idad_probe(device_t dev)
236 device_set_desc(dev, "Compaq Logical Drive");
241 idad_attach(device_t dev)
243 struct ida_drive_info dinfo;
244 struct disk_info info;
245 struct idad_softc *drv;
250 drv = (struct idad_softc *)device_get_softc(dev);
251 parent = device_get_parent(dev);
252 drv->controller = (struct ida_softc *)device_get_softc(parent);
253 drv->unit = device_get_unit(dev);
254 drv->drive = drv->controller->num_drives;
255 drv->controller->num_drives++;
257 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
258 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
260 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
264 drv->cylinders = dinfo.ncylinders;
265 drv->heads = dinfo.nheads;
266 drv->sectors = dinfo.nsectors;
267 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
268 drv->secperunit = dinfo.secperunit;
271 * other initialization
273 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
274 drv->secperunit / ((1024 * 1024) / drv->secsize),
275 drv->secperunit, drv->secsize);
277 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize,
278 DEVSTAT_NO_ORDERED_TAGS,
279 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER,
280 DEVSTAT_PRIORITY_ARRAY);
282 dsk = disk_create(drv->unit, &drv->disk, &id_ops);
285 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */
288 * Set disk info, as it appears that all needed data is available already.
289 * Setting the disk info will also cause the probing to start.
291 bzero(&info, sizeof(info));
292 info.d_media_blksize = drv->secsize; /* mandatory */
293 info.d_media_blocks = drv->secperunit;
295 info.d_secpertrack = drv->sectors; /* optional */
296 info.d_type = DTYPE_SCSI;
297 info.d_nheads = drv->heads;
298 info.d_ncylinders = drv->cylinders;
299 info.d_secpercyl = drv->sectors * drv->heads;
301 disk_setdiskinfo(&drv->disk, &info);
307 idad_detach(device_t dev)
309 struct idad_softc *drv;
311 drv = (struct idad_softc *)device_get_softc(dev);
312 devstat_remove_entry(&drv->stats);
313 disk_destroy(&drv->disk);