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
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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 $
30 * Disk driver for Compaq SMART RAID adapters.
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/kernel.h>
42 #include <sys/devicestat.h>
46 #include <machine/bus_memio.h>
48 #include <machine/bus_pio.h>
49 #include <machine/bus.h>
50 #include <machine/clock.h>
55 #include <machine/md_var.h>
57 #include <dev/ida/idareg.h>
58 #include <dev/ida/idavar.h>
61 static int idad_probe(device_t dev);
62 static int idad_attach(device_t dev);
63 static int idad_detach(device_t dev);
65 static d_open_t idad_open;
66 static d_close_t idad_close;
67 static d_strategy_t idad_strategy;
68 static d_dump_t idad_dump;
70 #define IDAD_BDEV_MAJOR 29
71 #define IDAD_CDEV_MAJOR 109
73 static struct cdevsw id_cdevsw = {
75 /* close */ idad_close,
77 /* write */ physwrite,
81 /* strategy */ idad_strategy,
83 /* maj */ IDAD_CDEV_MAJOR,
87 /* bmaj */ IDAD_BDEV_MAJOR
90 static devclass_t idad_devclass;
91 static struct cdevsw idaddisk_cdevsw;
92 static int disks_registered = 0;
94 static device_method_t idad_methods[] = {
95 DEVMETHOD(device_probe, idad_probe),
96 DEVMETHOD(device_attach, idad_attach),
97 DEVMETHOD(device_detach, idad_detach),
101 static driver_t idad_driver = {
104 sizeof(struct idad_softc)
107 DRIVER_MODULE(idad, ida, idad_driver, idad_devclass, 0, 0);
109 static __inline struct idad_softc *
110 idad_getsoftc(dev_t dev)
113 return ((struct idad_softc *)dev->si_drv1);
117 idad_open(dev_t dev, int flags, int fmt, struct proc *p)
119 struct idad_softc *drv;
120 struct disklabel *label;
122 drv = idad_getsoftc(dev);
126 label = &drv->disk.d_label;
127 bzero(label, sizeof(*label));
128 label->d_type = DTYPE_SCSI;
129 label->d_secsize = drv->secsize;
130 label->d_nsectors = drv->sectors;
131 label->d_ntracks = drv->heads;
132 label->d_ncylinders = drv->cylinders;
133 label->d_secpercyl = drv->sectors * drv->heads;
134 label->d_secperunit = drv->secperunit;
140 idad_close(dev_t dev, int flags, int fmt, struct proc *p)
142 struct idad_softc *drv;
144 drv = idad_getsoftc(dev);
151 * Read/write routine for a buffer. Finds the proper unit, range checks
152 * arguments, and schedules the transfer. Does not wait for the transfer
153 * to complete. Multi-page transfers are supported. All I/O requests must
154 * be a multiple of a sector in length.
157 idad_strategy(struct buf *bp)
159 struct idad_softc *drv;
162 drv = idad_getsoftc(bp->b_dev);
164 bp->b_error = EINVAL;
169 * software write protect check
171 if (drv->flags & DRV_WRITEPROT && (bp->b_flags & B_READ) == 0) {
177 * If it's a null transfer, return immediately
179 if (bp->b_bcount == 0)
184 devstat_start_transaction(&drv->stats);
185 ida_submit_buf(drv->controller, bp);
190 bp->b_flags |= B_ERROR;
194 * Correctly set the buf to indicate a completed transfer
196 bp->b_resid = bp->b_bcount;
204 struct idad_softc *drv;
205 u_int count, blkno, secsize;
207 int i, error, dumppages;
211 if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize)))
214 drv = idad_getsoftc(dev);
219 blkcnt = howmany(PAGE_SIZE, secsize);
224 dumppages = imin(count / blkcnt, MAXDUMPPGS);
226 for (i = 0; i < dumppages; i++) {
227 a = addr + (i * PAGE_SIZE);
228 if (is_physical_memory(a))
229 va = pmap_kenter_temporary(trunc_page(a), i);
231 va = pmap_kenter_temporary(trunc_page(0), i);
234 error = ida_command(drv->controller, CMD_WRITE, va,
235 PAGE_SIZE * dumppages, drv->drive, blkno, DMA_DATA_OUT);
239 if (dumpstatus(addr, (off_t)count * DEV_BSIZE) < 0)
242 blkno += blkcnt * dumppages;
243 count -= blkcnt * dumppages;
244 addr += PAGE_SIZE * dumppages;
250 idad_intr(struct buf *bp)
252 struct idad_softc *drv = (struct idad_softc *)bp->b_driver1;
254 if (bp->b_flags & B_ERROR)
259 devstat_end_transaction_buf(&drv->stats, bp);
264 idad_probe(device_t dev)
267 device_set_desc(dev, "Compaq Logical Drive");
272 idad_attach(device_t dev)
274 struct ida_drive_info dinfo;
275 struct idad_softc *drv;
280 drv = (struct idad_softc *)device_get_softc(dev);
281 parent = device_get_parent(dev);
282 drv->controller = (struct ida_softc *)device_get_softc(parent);
283 drv->unit = device_get_unit(dev);
284 drv->drive = drv->controller->num_drives;
285 drv->controller->num_drives++;
287 error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
288 &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
290 device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
294 drv->cylinders = dinfo.ncylinders;
295 drv->heads = dinfo.nheads;
296 drv->sectors = dinfo.nsectors;
297 drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
298 drv->secperunit = dinfo.secperunit;
301 * other initialization
303 device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
304 drv->secperunit / ((1024 * 1024) / drv->secsize),
305 drv->secperunit, drv->secsize);
307 devstat_add_entry(&drv->stats, "idad", drv->unit, drv->secsize,
308 DEVSTAT_NO_ORDERED_TAGS,
309 DEVSTAT_TYPE_STORARRAY| DEVSTAT_TYPE_IF_OTHER,
310 DEVSTAT_PRIORITY_ARRAY);
312 dsk = disk_create(drv->unit, &drv->disk, 0,
313 &id_cdevsw, &idaddisk_cdevsw);
316 dsk->si_iosize_max = DFLTPHYS; /* XXX guess? */
323 idad_detach(device_t dev)
325 struct idad_softc *drv;
327 drv = (struct idad_softc *)device_get_softc(dev);
328 devstat_remove_entry(&drv->stats);
330 if (--disks_registered == 0)
331 cdevsw_remove(&idaddisk_cdevsw);