1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999,2000 Jonathan Lemon
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29/*
30 * Disk driver for Compaq SMART RAID adapters.
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37
38#include <sys/bio.h>
39#include <sys/bus.h>
40#include <sys/conf.h>
41#include <sys/cons.h>
42#include <sys/lock.h>
43#include <sys/mutex.h>
44
45#include <machine/bus.h>
46#include <sys/rman.h>
47
48#include <vm/vm.h>
49#include <vm/pmap.h>
50#include <machine/md_var.h>
51
52#include <geom/geom_disk.h>
53
54#include <dev/ida/idareg.h>
55#include <dev/ida/idavar.h>
56
57/* prototypes */
58static int idad_probe(device_t dev);
59static int idad_attach(device_t dev);
60static int idad_detach(device_t dev);
61
62static	d_strategy_t	idad_strategy;
63static	dumper_t	idad_dump;
64
65static device_method_t idad_methods[] = {
66	DEVMETHOD(device_probe,		idad_probe),
67	DEVMETHOD(device_attach,	idad_attach),
68	DEVMETHOD(device_detach,	idad_detach),
69	{ 0, 0 }
70};
71
72static driver_t idad_driver = {
73	"idad",
74	idad_methods,
75	sizeof(struct idad_softc)
76};
77
78DRIVER_MODULE(idad, ida, idad_driver, 0, 0);
79
80/*
81 * Read/write routine for a buffer.  Finds the proper unit, range checks
82 * arguments, and schedules the transfer.  Does not wait for the transfer
83 * to complete.  Multi-page transfers are supported.  All I/O requests must
84 * be a multiple of a sector in length.
85 */
86static void
87idad_strategy(struct bio *bp)
88{
89	struct idad_softc *drv;
90
91	drv = bp->bio_disk->d_drv1;
92	if (drv == NULL) {
93    		bp->bio_error = EINVAL;
94		goto bad;
95	}
96
97	/*
98	 * software write protect check
99	 */
100	if (drv->flags & DRV_WRITEPROT && (bp->bio_cmd == BIO_WRITE)) {
101		bp->bio_error = EROFS;
102		goto bad;
103	}
104
105	if ((bp->bio_cmd != BIO_READ) && (bp->bio_cmd != BIO_WRITE)) {
106		bp->bio_error = EOPNOTSUPP;
107		goto bad;
108	}
109
110	bp->bio_driver1 = drv;
111	ida_submit_buf(drv->controller, bp);
112	return;
113
114bad:
115	bp->bio_flags |= BIO_ERROR;
116
117	/*
118	 * Correctly set the buf to indicate a completed transfer
119	 */
120	bp->bio_resid = bp->bio_bcount;
121	biodone(bp);
122	return;
123}
124
125static int
126idad_dump(void *arg, void *virtual, off_t offset, size_t length)
127{
128
129	struct idad_softc *drv;
130	int error = 0;
131	struct disk *dp;
132
133	dp = arg;
134	drv = dp->d_drv1;
135	if (drv == NULL)
136		return (ENXIO);
137
138	drv->controller->flags &= ~IDA_INTERRUPTS;
139
140	if (length > 0) {
141		error = ida_command(drv->controller, CMD_WRITE, virtual,
142		    length, drv->drive, offset / DEV_BSIZE, DMA_DATA_OUT);
143	}
144	drv->controller->flags |= IDA_INTERRUPTS;
145	return (error);
146}
147
148void
149idad_intr(struct bio *bp)
150{
151
152	if (bp->bio_flags & BIO_ERROR)
153		bp->bio_error = EIO;
154	else
155		bp->bio_resid = 0;
156
157	biodone(bp);
158}
159
160static int
161idad_probe(device_t dev)
162{
163
164	device_set_desc(dev, "Compaq Logical Drive");
165	return (0);
166}
167
168static int
169idad_attach(device_t dev)
170{
171	struct ida_drive_info dinfo;
172	struct idad_softc *drv;
173	device_t parent;
174	int error;
175
176	drv = (struct idad_softc *)device_get_softc(dev);
177	parent = device_get_parent(dev);
178	drv->dev = dev;
179	drv->controller = (struct ida_softc *)device_get_softc(parent);
180	drv->unit = device_get_unit(dev);
181	drv->drive = (intptr_t)device_get_ivars(dev);
182
183	mtx_lock(&drv->controller->lock);
184	error = ida_command(drv->controller, CMD_GET_LOG_DRV_INFO,
185	    &dinfo, sizeof(dinfo), drv->drive, 0, DMA_DATA_IN);
186	mtx_unlock(&drv->controller->lock);
187	if (error) {
188		device_printf(dev, "CMD_GET_LOG_DRV_INFO failed\n");
189		return (ENXIO);
190	}
191
192	drv->cylinders = dinfo.dp.ncylinders;
193	drv->heads = dinfo.dp.nheads;
194	drv->sectors = dinfo.dp.nsectors;
195	drv->secsize = dinfo.secsize == 0 ? 512 : dinfo.secsize;
196	drv->secperunit = dinfo.secperunit;
197
198	/* XXX
199	 * other initialization
200	 */
201	device_printf(dev, "%uMB (%u sectors), blocksize=%d\n",
202	    drv->secperunit / ((1024 * 1024) / drv->secsize),
203	    drv->secperunit, drv->secsize);
204
205	drv->disk = disk_alloc();
206	drv->disk->d_strategy = idad_strategy;
207	drv->disk->d_name = "idad";
208	drv->disk->d_dump = idad_dump;
209	drv->disk->d_sectorsize = drv->secsize;
210	drv->disk->d_mediasize = (off_t)drv->secperunit * drv->secsize;
211	drv->disk->d_fwsectors = drv->sectors;
212	drv->disk->d_fwheads = drv->heads;
213	drv->disk->d_drv1 = drv;
214	drv->disk->d_maxsize = DFLTPHYS;		/* XXX guess? */
215	drv->disk->d_unit = drv->unit;
216	disk_create(drv->disk, DISK_VERSION);
217
218	return (0);
219}
220
221static int
222idad_detach(device_t dev)
223{
224	struct idad_softc *drv;
225
226	drv = (struct idad_softc *)device_get_softc(dev);
227	disk_destroy(drv->disk);
228	return (0);
229}
230