FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_cac.c
1 /* $NetBSD: ld_cac.c,v 1.16 2006/11/28 20:29:14 ad Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * Compaq array controller front-end for ld(4) driver.
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: ld_cac.c,v 1.16 2006/11/28 20:29:14 ad Exp $");
45
46 #include "rnd.h"
47
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #include <sys/device.h>
52 #include <sys/buf.h>
53 #include <sys/bufq.h>
54 #include <sys/endian.h>
55 #include <sys/dkio.h>
56 #include <sys/disk.h>
57 #if NRND > 0
58 #include <sys/rnd.h>
59 #endif
60
61 #include <machine/bus.h>
62
63 #include <dev/ldvar.h>
64
65 #include <dev/ic/cacreg.h>
66 #include <dev/ic/cacvar.h>
67
68 struct ld_cac_softc {
69 struct ld_softc sc_ld;
70 int sc_hwunit;
71 struct timeval sc_serrtm;
72 int sc_serrcnt;
73 };
74
75 void ld_cac_attach(struct device *, struct device *, void *);
76 void ld_cac_done(struct device *, void *, int);
77 int ld_cac_dump(struct ld_softc *, void *, int, int);
78 int ld_cac_match(struct device *, struct cfdata *, void *);
79 int ld_cac_start(struct ld_softc *, struct buf *);
80
81 static const struct timeval ld_cac_serrintvl = { 60, 0 };
82
83 CFATTACH_DECL(ld_cac, sizeof(struct ld_cac_softc),
84 ld_cac_match, ld_cac_attach, NULL, NULL);
85
86 int
87 ld_cac_match(struct device *parent, struct cfdata *match,
88 void *aux)
89 {
90
91 return (1);
92 }
93
94 void
95 ld_cac_attach(struct device *parent, struct device *self, void *aux)
96 {
97 struct cac_drive_info dinfo;
98 struct cac_attach_args *caca;
99 struct ld_softc *ld;
100 struct ld_cac_softc *sc;
101 struct cac_softc *cac;
102 const char *type;
103
104 sc = (struct ld_cac_softc *)self;
105 ld = &sc->sc_ld;
106 caca = (struct cac_attach_args *)aux;
107 sc->sc_hwunit = caca->caca_unit;
108 cac = (struct cac_softc *)parent;
109
110 if (cac_cmd(cac, CAC_CMD_GET_LOG_DRV_INFO, &dinfo, sizeof(dinfo),
111 sc->sc_hwunit, 0, CAC_CCB_DATA_IN, NULL)) {
112 aprint_error(": CMD_GET_LOG_DRV_INFO failed\n");
113 return;
114 }
115
116 ld->sc_secsize = CAC_GET2(dinfo.secsize);
117 ld->sc_maxxfer = CAC_MAX_XFER;
118 ld->sc_maxqueuecnt = CAC_MAX_CCBS / cac->sc_nunits; /* XXX */
119 ld->sc_secperunit = CAC_GET2(dinfo.ncylinders) *
120 CAC_GET1(dinfo.nheads) * CAC_GET1(dinfo.nsectors);
121 ld->sc_start = ld_cac_start;
122 ld->sc_dump = ld_cac_dump;
123
124 switch (CAC_GET1(dinfo.mirror)) {
125 case 0:
126 type = "standalone disk or RAID0";
127 break;
128 case 1:
129 type = "RAID4";
130 break;
131 case 2:
132 type = "RAID1";
133 break;
134 case 3:
135 type = "RAID5";
136 break;
137 default:
138 type = "unknown type of";
139 break;
140 }
141
142 aprint_normal(": %s array\n", type);
143
144 /* XXX We should verify this... */
145 ld->sc_flags = LDF_ENABLED;
146 ldattach(ld);
147 }
148
149 int
150 ld_cac_start(struct ld_softc *ld, struct buf *bp)
151 {
152 int flags, cmd;
153 struct cac_softc *cac;
154 struct ld_cac_softc *sc;
155 struct cac_context cc;
156
157 sc = (struct ld_cac_softc *)ld;
158 cac = (struct cac_softc *)device_parent(&ld->sc_dv);
159
160 cc.cc_handler = ld_cac_done;
161 cc.cc_context = bp;
162 cc.cc_dv = &ld->sc_dv;
163
164 if ((bp->b_flags & B_READ) == 0) {
165 cmd = CAC_CMD_WRITE;
166 flags = CAC_CCB_DATA_OUT;
167 } else {
168 cmd = CAC_CMD_READ;
169 flags = CAC_CCB_DATA_IN;
170 }
171
172 return (cac_cmd(cac, cmd, bp->b_data, bp->b_bcount, sc->sc_hwunit,
173 bp->b_rawblkno, flags, &cc));
174 }
175
176 int
177 ld_cac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
178 {
179 struct ld_cac_softc *sc;
180
181 sc = (struct ld_cac_softc *)ld;
182
183 return (cac_cmd((struct cac_softc *)device_parent(&ld->sc_dv),
184 CAC_CMD_WRITE_MEDIA, data, blkcnt * ld->sc_secsize,
185 sc->sc_hwunit, blkno, CAC_CCB_DATA_OUT, NULL));
186 }
187
188 void
189 ld_cac_done(struct device *dv, void *context, int error)
190 {
191 struct buf *bp;
192 struct ld_cac_softc *sc;
193 int rv;
194
195 bp = context;
196 rv = 0;
197
198 if ((error & CAC_RET_CMD_REJECTED) == CAC_RET_CMD_REJECTED) {
199 printf("%s: command rejected\n", dv->dv_xname);
200 rv = EIO;
201 }
202 if (rv == 0 && (error & CAC_RET_INVAL_BLOCK) != 0) {
203 printf("%s: invalid request block\n", dv->dv_xname);
204 rv = EIO;
205 }
206 if (rv == 0 && (error & CAC_RET_HARD_ERROR) != 0) {
207 printf("%s: hard error\n", dv->dv_xname);
208 rv = EIO;
209 }
210 if (rv == 0 && (error & CAC_RET_SOFT_ERROR) != 0) {
211 sc = (struct ld_cac_softc *)dv;
212 sc->sc_serrcnt++;
213 if (ratecheck(&sc->sc_serrtm, &ld_cac_serrintvl)) {
214 printf("%s: %d soft errors; array may be degraded\n",
215 dv->dv_xname, sc->sc_serrcnt);
216 sc->sc_serrcnt = 0;
217 }
218 }
219
220 if (rv) {
221 bp->b_flags |= B_ERROR;
222 bp->b_error = rv;
223 bp->b_resid = bp->b_bcount;
224 } else
225 bp->b_resid = 0;
226
227 lddone((struct ld_softc *)dv, bp);
228 }
Cache object: c52364b34bc2413850f6fad0dd62070d
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