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 1.15 2007/05/15 00:01:04 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>
46 #include <sys/thread2.h>
48 #include <machine/clock.h>
49 #include <machine/md_var.h>
58 static int idad_probe(device_t dev);
59 static int idad_attach(device_t dev);
60 static int idad_detach(device_t dev);
62 static d_open_t idad_open;
63 static d_close_t idad_close;
64 static d_strategy_t idad_strategy;
65 static d_dump_t idad_dump;
67 #define IDAD_BDEV_MAJOR 29
68 #define IDAD_CDEV_MAJOR 109
70 static struct dev_ops id_ops = {
71 { "idad", IDAD_CDEV_MAJOR, D_DISK },
73 .d_close = idad_close,
76 .d_strategy = idad_strategy,
80 static devclass_t idad_devclass;
82 static device_method_t idad_methods[] = {
83 DEVMETHOD(device_probe, idad_probe),
84 DEVMETHOD(device_attach, idad_attach),
85 DEVMETHOD(device_detach, idad_detach),
89 static driver_t idad_driver = {
92 sizeof(struct idad_softc)
95 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
97 static __inline struct idad_softc *
98 idad_getsoftc(cdev_t dev)
101 return ((struct idad_softc *)dev->si_drv1);
105 idad_open(struct dev_open_args *ap)
107 cdev_t dev = ap->a_head.a_dev;
108 struct idad_softc *drv;
109 struct disk_info info;
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;
201 int i, error, dumppages;
205 drv = idad_getsoftc(dev);
210 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
212 while (ap->a_count > 0) {
215 dumppages = imin(ap->a_count / blkcnt, MAXDUMPPGS);
217 for (i = 0; i < dumppages; i++) {
218 a = addr + (i * PAGE_SIZE);
219 if (is_physical_memory(a))
220 va = pmap_kenter_temporary(trunc_page(a), i);
222 va = pmap_kenter_temporary(trunc_page(0), i);
225 error = ida_command(drv->controller, CMD_WRITE, va,
226 PAGE_SIZE * dumppages, drv->drive, ap->a_blkno, DMA_DATA_OUT);
230 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0)
233 ap->a_blkno += blkcnt * dumppages;
234 ap->a_count -= blkcnt * dumppages;
235 addr += PAGE_SIZE * dumppages;
241 idad_intr(struct bio *bio)
243 struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info;
244 struct buf *bp = bio->bio_buf;
246 if (bp->b_flags & B_ERROR)
251 devstat_end_transaction_buf(&drv->stats, bp);
256 idad_probe(device_t dev)
259 device_set_desc(dev, "Compaq Logical Drive");
264 idad_attach(device_t dev)
266 struct ida_drive_info dinfo;
267 struct idad_softc *drv;
272 drv = (struct idad_softc *)device_get_softc(dev);
273 parent = device_get_parent(dev);
274 drv->controller = (struct ida_softc *)device_get_softc(parent);
275 drv->unit = device_get_unit(dev);
276 drv->drive = drv->controller->num_drives;
277 drv->controller->num_drives++;
279 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
280 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
282 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
286 drv->cylinders = dinfo.ncylinders;
287 drv->heads = dinfo.nheads;
288 drv->sectors = dinfo.nsectors;
289 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
290 drv->secperunit = dinfo.secperunit;
293 * other initialization
295 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
296 drv->secperunit / ((1024 * 1024) / drv->secsize),
297 drv->secperunit, drv->secsize);
299 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize,
300 DEVSTAT_NO_ORDERED_TAGS,
301 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER,
302 DEVSTAT_PRIORITY_ARRAY);
304 dsk = disk_create(drv->unit, &drv->disk, &id_ops);
307 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */
313 idad_detach(device_t dev)
315 struct idad_softc *drv;
317 drv = (struct idad_softc *)device_get_softc(dev);
318 devstat_remove_entry(&drv->stats);
319 disk_destroy(&drv->disk);