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 1.12 2006/07/28 02:17:37 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>
47 #include <machine/bus_memio.h>
49 #include <machine/bus_pio.h>
50 #include <machine/bus.h>
51 #include <machine/clock.h>
53 #include <sys/thread2.h>
57 #include <machine/md_var.h>
63 static int idad_probe(device_t dev);
64 static int idad_attach(device_t dev);
65 static int idad_detach(device_t dev);
67 static d_open_t idad_open;
68 static d_close_t idad_close;
69 static d_strategy_t idad_strategy;
70 static d_dump_t idad_dump;
72 #define IDAD_BDEV_MAJOR 29
73 #define IDAD_CDEV_MAJOR 109
75 static struct dev_ops id_ops = {
76 { "idad", IDAD_CDEV_MAJOR, D_DISK },
78 .d_close = idad_close,
81 .d_strategy = idad_strategy,
85 static devclass_t idad_devclass;
87 static device_method_t idad_methods[] = {
88 DEVMETHOD(device_probe, idad_probe),
89 DEVMETHOD(device_attach, idad_attach),
90 DEVMETHOD(device_detach, idad_detach),
94 static driver_t idad_driver = {
97 sizeof(struct idad_softc)
100 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
102 static __inline struct idad_softc *
103 idad_getsoftc(dev_t dev)
106 return ((struct idad_softc *)dev->si_drv1);
110 idad_open(struct dev_open_args *ap)
112 dev_t dev = ap->a_head.a_dev;
113 struct idad_softc *drv;
114 struct disklabel *label;
116 drv = idad_getsoftc(dev);
120 label = &drv->disk.d_label;
121 bzero(label, sizeof(*label));
122 label->d_type = DTYPE_SCSI;
123 label->d_secsize = drv->secsize;
124 label->d_nsectors = drv->sectors;
125 label->d_ntracks = drv->heads;
126 label->d_ncylinders = drv->cylinders;
127 label->d_secpercyl = drv->sectors * drv->heads;
128 label->d_secperunit = drv->secperunit;
134 idad_close(struct dev_close_args *ap)
136 dev_t dev = ap->a_head.a_dev;
137 struct idad_softc *drv;
139 drv = idad_getsoftc(dev);
146 * Read/write routine for a buffer. Finds the proper unit, range checks
147 * arguments, and schedules the transfer. Does not wait for the transfer
148 * to complete. Multi-page transfers are supported. All I/O requests must
149 * be a multiple of a sector in length.
152 idad_strategy(struct dev_strategy_args *ap)
154 dev_t dev = ap->a_head.a_dev;
155 struct bio *bio = ap->a_bio;
156 struct buf *bp = bio->bio_buf;
157 struct idad_softc *drv;
159 drv = idad_getsoftc(dev);
161 bp->b_error = EINVAL;
166 * software write protect check
168 if ((drv->flags & DRV_WRITEPROT) && bp->b_cmd != BUF_CMD_READ) {
174 * If it's a null transfer, return immediately
176 if (bp->b_bcount == 0)
179 bio->bio_driver_info = drv;
181 devstat_start_transaction(&drv->stats);
182 ida_submit_buf(drv->controller, bio);
187 bp->b_flags |= B_ERROR;
191 * Correctly set the buf to indicate a completed transfer
193 bp->b_resid = bp->b_bcount;
199 idad_dump(struct dev_dump_args *ap)
201 dev_t dev = ap->a_head.a_dev;
202 struct idad_softc *drv;
204 int i, error, dumppages;
208 drv = idad_getsoftc(dev);
213 blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
215 while (ap->a_count > 0) {
218 dumppages = imin(ap->a_count / blkcnt, MAXDUMPPGS);
220 for (i = 0; i < dumppages; i++) {
221 a = addr + (i * PAGE_SIZE);
222 if (is_physical_memory(a))
223 va = pmap_kenter_temporary(trunc_page(a), i);
225 va = pmap_kenter_temporary(trunc_page(0), i);
228 error = ida_command(drv->controller, CMD_WRITE, va,
229 PAGE_SIZE * dumppages, drv->drive, ap->a_blkno, DMA_DATA_OUT);
233 if (dumpstatus(addr, (off_t)ap->a_count * DEV_BSIZE) < 0)
236 ap->a_blkno += blkcnt * dumppages;
237 ap->a_count -= blkcnt * dumppages;
238 addr += PAGE_SIZE * dumppages;
244 idad_intr(struct bio *bio)
246 struct idad_softc *drv = (struct idad_softc *)bio->bio_driver_info;
247 struct buf *bp = bio->bio_buf;
249 if (bp->b_flags & B_ERROR)
254 devstat_end_transaction_buf(&drv->stats, bp);
259 idad_probe(device_t dev)
262 device_set_desc(dev, "Compaq Logical Drive");
267 idad_attach(device_t dev)
269 struct ida_drive_info dinfo;
270 struct idad_softc *drv;
275 drv = (struct idad_softc *)device_get_softc(dev);
276 parent = device_get_parent(dev);
277 drv->controller = (struct ida_softc *)device_get_softc(parent);
278 drv->unit = device_get_unit(dev);
279 drv->drive = drv->controller->num_drives;
280 drv->controller->num_drives++;
282 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
283 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
285 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
289 drv->cylinders = dinfo.ncylinders;
290 drv->heads = dinfo.nheads;
291 drv->sectors = dinfo.nsectors;
292 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
293 drv->secperunit = dinfo.secperunit;
296 * other initialization
298 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
299 drv->secperunit / ((1024 * 1024) / drv->secsize),
300 drv->secperunit, drv->secsize);
302 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize,
303 DEVSTAT_NO_ORDERED_TAGS,
304 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER,
305 DEVSTAT_PRIORITY_ARRAY);
307 dsk = disk_create(drv->unit, &drv->disk, 0, &id_ops);
310 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */
316 idad_detach(device_t dev)
318 struct idad_softc *drv;
320 drv = (struct idad_softc *)device_get_softc(dev);
321 devstat_remove_entry(&drv->stats);
322 disk_destroy(&drv->disk);