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 1.8 2004/05/19 22:52:47 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>
56 #include <machine/md_var.h>
62 static int idad_probe(device_t dev);
63 static int idad_attach(device_t dev);
64 static int idad_detach(device_t dev);
66 static d_open_t idad_open;
67 static d_close_t idad_close;
68 static d_strategy_t idad_strategy;
69 static d_dump_t idad_dump;
71 #define IDAD_BDEV_MAJOR 29
72 #define IDAD_CDEV_MAJOR 109
74 static struct cdevsw id_cdevsw = {
76 /* maj */ IDAD_CDEV_MAJOR,
82 /* close */ idad_close,
84 /* write */ physwrite,
88 /* strategy */ idad_strategy,
93 static devclass_t idad_devclass;
95 static device_method_t idad_methods[] = {
96 DEVMETHOD(device_probe, idad_probe),
97 DEVMETHOD(device_attach, idad_attach),
98 DEVMETHOD(device_detach, idad_detach),
102 static driver_t idad_driver = {
105 sizeof(struct idad_softc)
108 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
110 static __inline struct idad_softc *
111 idad_getsoftc(dev_t dev)
114 return ((struct idad_softc *)dev->si_drv1);
118 idad_open(dev_t dev, int flags, int fmt, d_thread_t *td)
120 struct idad_softc *drv;
121 struct disklabel *label;
123 drv = idad_getsoftc(dev);
127 label = &drv->disk.d_label;
128 bzero(label, sizeof(*label));
129 label->d_type = DTYPE_SCSI;
130 label->d_secsize = drv->secsize;
131 label->d_nsectors = drv->sectors;
132 label->d_ntracks = drv->heads;
133 label->d_ncylinders = drv->cylinders;
134 label->d_secpercyl = drv->sectors * drv->heads;
135 label->d_secperunit = drv->secperunit;
141 idad_close(dev_t dev, int flags, int fmt, d_thread_t *td)
143 struct idad_softc *drv;
145 drv = idad_getsoftc(dev);
152 * Read/write routine for a buffer. Finds the proper unit, range checks
153 * arguments, and schedules the transfer. Does not wait for the transfer
154 * to complete. Multi-page transfers are supported. All I/O requests must
155 * be a multiple of a sector in length.
158 idad_strategy(struct buf *bp)
160 struct idad_softc *drv;
163 drv = idad_getsoftc(bp->b_dev);
165 bp->b_error = EINVAL;
170 * software write protect check
172 if (drv->flags & DRV_WRITEPROT && (bp->b_flags & B_READ) == 0) {
178 * If it's a null transfer, return immediately
180 if (bp->b_bcount == 0)
185 devstat_start_transaction(&drv->stats);
186 ida_submit_buf(drv->controller, bp);
191 bp->b_flags |= B_ERROR;
195 * Correctly set the buf to indicate a completed transfer
197 bp->b_resid = bp->b_bcount;
203 idad_dump(dev_t dev, u_int count, u_int blkno, u_int secsize)
205 struct idad_softc *drv;
207 int i, error, dumppages;
211 drv = idad_getsoftc(dev);
216 blkcnt = howmany(PAGE_SIZE, secsize);
221 dumppages = imin(count / blkcnt, MAXDUMPPGS);
223 for (i = 0; i < dumppages; i++) {
224 a = addr + (i * PAGE_SIZE);
225 if (is_physical_memory(a))
226 va = pmap_kenter_temporary(trunc_page(a), i);
228 va = pmap_kenter_temporary(trunc_page(0), i);
231 error = ida_command(drv->controller, CMD_WRITE, va,
232 PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT);
236 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
239 blkno += blkcnt * dumppages;
240 count -= blkcnt * dumppages;
241 addr += PAGE_SIZE * dumppages;
247 idad_intr(struct buf *bp)
249 struct idad_softc *drv = (struct idad_softc *)bp->b_driver1;
251 if (bp->b_flags & B_ERROR)
256 devstat_end_transaction_buf(&drv->stats, bp);
261 idad_probe(device_t dev)
264 device_set_desc(dev, "Compaq Logical Drive");
269 idad_attach(device_t dev)
271 struct ida_drive_info dinfo;
272 struct idad_softc *drv;
277 drv = (struct idad_softc *)device_get_softc(dev);
278 parent = device_get_parent(dev);
279 drv->controller = (struct ida_softc *)device_get_softc(parent);
280 drv->unit = device_get_unit(dev);
281 drv->drive = drv->controller->num_drives;
282 drv->controller->num_drives++;
284 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
285 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
287 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
291 drv->cylinders = dinfo.ncylinders;
292 drv->heads = dinfo.nheads;
293 drv->sectors = dinfo.nsectors;
294 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
295 drv->secperunit = dinfo.secperunit;
298 * other initialization
300 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
301 drv->secperunit / ((1024 * 1024) / drv->secsize),
302 drv->secperunit, drv->secsize);
304 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize,
305 DEVSTAT_NO_ORDERED_TAGS,
306 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER,
307 DEVSTAT_PRIORITY_ARRAY);
309 dsk = disk_create(drv->unit, &drv->disk, 0, &id_cdevsw);
312 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */
318 idad_detach(device_t dev)
320 struct idad_softc *drv;
322 drv = (struct idad_softc *)device_get_softc(dev);
323 devstat_remove_entry(&drv->stats);
324 disk_destroy(&drv->disk);