FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_mlx.c
1 /* $NetBSD: ld_mlx.c,v 1.9 2005/02/08 05:16:17 briggs Exp $ */
2
3 /*-
4 * Copyright (c) 2001 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 * Mylex DAC960 front-end for ld(4) driver.
41 */
42
43 #include <sys/cdefs.h>
44 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.9 2005/02/08 05:16:17 briggs 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/vmparam.h>
62 #include <machine/bus.h>
63
64 #include <dev/ldvar.h>
65
66 #include <dev/ic/mlxreg.h>
67 #include <dev/ic/mlxio.h>
68 #include <dev/ic/mlxvar.h>
69
70 struct ld_mlx_softc {
71 struct ld_softc sc_ld;
72 int sc_hwunit;
73 };
74
75 static void ld_mlx_attach(struct device *, struct device *, void *);
76 static int ld_mlx_detach(struct device *, int);
77 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
78 struct buf *);
79 static int ld_mlx_dump(struct ld_softc *, void *, int, int);
80 static void ld_mlx_handler(struct mlx_ccb *);
81 static int ld_mlx_match(struct device *, struct cfdata *, void *);
82 static int ld_mlx_start(struct ld_softc *, struct buf *);
83
84 CFATTACH_DECL(ld_mlx, sizeof(struct ld_mlx_softc),
85 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
86
87 static int
88 ld_mlx_match(struct device *parent, struct cfdata *match, void *aux)
89 {
90
91 return (1);
92 }
93
94 static void
95 ld_mlx_attach(struct device *parent, struct device *self, void *aux)
96 {
97 struct mlx_attach_args *mlxa;
98 struct ld_mlx_softc *sc;
99 struct ld_softc *ld;
100 struct mlx_softc *mlx;
101 struct mlx_sysdrive *ms;
102 const char *statestr;
103
104 sc = (struct ld_mlx_softc *)self;
105 ld = &sc->sc_ld;
106 mlx = (struct mlx_softc *)parent;
107 mlxa = aux;
108 ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
109
110 sc->sc_hwunit = mlxa->mlxa_unit;
111 ld->sc_maxxfer = MLX_MAX_XFER;
112 ld->sc_secsize = MLX_SECTOR_SIZE;
113 ld->sc_maxqueuecnt = 1;
114 ld->sc_start = ld_mlx_start;
115 ld->sc_dump = ld_mlx_dump;
116 ld->sc_secperunit = ms->ms_size;
117
118 /*
119 * Report on current status, and attach to the ld driver proper.
120 */
121 switch (ms->ms_state) {
122 case MLX_SYSD_ONLINE:
123 statestr = "online";
124 ld->sc_flags = LDF_ENABLED;
125 break;
126
127 case MLX_SYSD_CRITICAL:
128 statestr = "critical";
129 ld->sc_flags = LDF_ENABLED;
130 break;
131
132 case MLX_SYSD_OFFLINE:
133 statestr = "offline";
134 break;
135
136 default:
137 statestr = "state unknown";
138 break;
139 }
140
141 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
142 aprint_normal(": JBOD, %s\n", statestr);
143 else
144 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
145
146 ldattach(ld);
147 }
148
149 static int
150 ld_mlx_detach(struct device *dv, int flags)
151 {
152 int rv;
153
154 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
155 return (rv);
156 ldenddetach((struct ld_softc *)dv);
157 mlx_flush((struct mlx_softc *)dv->dv_parent, 1);
158
159 return (0);
160 }
161
162 static int
163 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
164 int dowrite, struct buf *bp)
165 {
166 struct mlx_ccb *mc;
167 struct mlx_softc *mlx;
168 int s, rv;
169 bus_addr_t sgphys;
170
171 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
172
173 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
174 return (rv);
175
176 /* Map the data transfer. */
177 rv = mlx_ccb_map(mlx, mc, data, datasize,
178 dowrite ? MC_XFER_OUT : MC_XFER_IN);
179 if (rv != 0) {
180 mlx_ccb_free(mlx, mc);
181 return (rv);
182 }
183
184 /* Build the command. */
185 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
186 datasize /= MLX_SECTOR_SIZE;
187
188 if (mlx->mlx_ci.ci_iftype <= 2)
189 mlx_make_type1(mc,
190 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
191 datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
192 mc->mc_nsgent);
193 else
194 mlx_make_type5(mc,
195 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
196 datasize & 0xff,
197 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
198 blkno, sgphys, mc->mc_nsgent);
199
200 if (bp == NULL) {
201 s = splbio();
202 rv = mlx_ccb_poll(mlx, mc, 10000);
203 mlx_ccb_unmap(mlx, mc);
204 mlx_ccb_free(mlx, mc);
205 splx(s);
206 } else {
207 mc->mc_mx.mx_handler = ld_mlx_handler;
208 mc->mc_mx.mx_context = bp;
209 mc->mc_mx.mx_dv = &sc->sc_ld.sc_dv;
210 mlx_ccb_enqueue(mlx, mc);
211 rv = 0;
212 }
213
214 return (rv);
215 }
216
217 static int
218 ld_mlx_start(struct ld_softc *ld, struct buf *bp)
219 {
220
221 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
222 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
223 }
224
225 static void
226 ld_mlx_handler(struct mlx_ccb *mc)
227 {
228 struct buf *bp;
229 struct mlx_context *mx;
230 struct ld_mlx_softc *sc;
231 struct mlx_softc *mlx;
232
233 mx = &mc->mc_mx;
234 bp = mx->mx_context;
235 sc = (struct ld_mlx_softc *)mx->mx_dv;
236 mlx = (struct mlx_softc *)sc->sc_ld.sc_dv.dv_parent;
237
238 if (mc->mc_status != MLX_STATUS_OK) {
239 bp->b_flags |= B_ERROR;
240 bp->b_error = EIO;
241 bp->b_resid = bp->b_bcount;
242
243 if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
244 printf("%s: drive offline\n",
245 sc->sc_ld.sc_dv.dv_xname);
246 else
247 printf("%s: I/O error - %s\n",
248 sc->sc_ld.sc_dv.dv_xname,
249 mlx_ccb_diagnose(mc));
250 } else
251 bp->b_resid = 0;
252
253 mlx_ccb_unmap(mlx, mc);
254 mlx_ccb_free(mlx, mc);
255 lddone(&sc->sc_ld, bp);
256 }
257
258 static int
259 ld_mlx_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
260 {
261
262 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
263 blkcnt * ld->sc_secsize, blkno, 1, NULL));
264 }
Cache object: 2c0db754db392c49eccef9c43b951b6d
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