1 /* $NetBSD: ld_mlx.c,v 1.24 2025/04/13 02:34:03 rin 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Mylex DAC960 front-end for ld(4) driver.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: ld_mlx.c,v 1.24 2025/04/13 02:34:03 rin Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/device.h>
43 #include <sys/buf.h>
44 #include <sys/bufq.h>
45 #include <sys/endian.h>
46 #include <sys/dkio.h>
47 #include <sys/disk.h>
48 #include <sys/module.h>
49 #include <machine/vmparam.h>
50 #include <sys/bus.h>
51
52 #include <dev/ldvar.h>
53
54 #include <dev/ic/mlxreg.h>
55 #include <dev/ic/mlxio.h>
56 #include <dev/ic/mlxvar.h>
57
58 #include "ioconf.h"
59
60 struct ld_mlx_softc {
61 struct ld_softc sc_ld;
62 int sc_hwunit;
63 };
64
65 static void ld_mlx_attach(device_t, device_t, void *);
66 static int ld_mlx_detach(device_t, int);
67 static int ld_mlx_dobio(struct ld_mlx_softc *, void *, int, int, int,
68 struct buf *);
69 static int ld_mlx_dump(struct ld_softc *, void *, daddr_t, int);
70 static void ld_mlx_handler(struct mlx_ccb *);
71 static int ld_mlx_match(device_t, cfdata_t, void *);
72 static int ld_mlx_start(struct ld_softc *, struct buf *);
73
74 CFATTACH_DECL_NEW(ld_mlx, sizeof(struct ld_mlx_softc),
75 ld_mlx_match, ld_mlx_attach, ld_mlx_detach, NULL);
76
77 static int
ld_mlx_match(device_t parent,cfdata_t match,void * aux)78 ld_mlx_match(device_t parent, cfdata_t match, void *aux)
79 {
80
81 return (1);
82 }
83
84 static void
ld_mlx_attach(device_t parent,device_t self,void * aux)85 ld_mlx_attach(device_t parent, device_t self, void *aux)
86 {
87 struct mlx_attach_args *mlxa = aux;
88 struct ld_mlx_softc *sc = device_private(self);
89 struct ld_softc *ld = &sc->sc_ld;
90 struct mlx_softc *mlx = device_private(parent);
91 struct mlx_sysdrive *ms = &mlx->mlx_sysdrive[mlxa->mlxa_unit];
92 const char *statestr;
93
94 ld->sc_dv = self;
95
96 sc->sc_hwunit = mlxa->mlxa_unit;
97 ld->sc_maxxfer = MLX_MAX_XFER;
98 ld->sc_secsize = MLX_SECTOR_SIZE;
99 ld->sc_maxqueuecnt = 1;
100 ld->sc_start = ld_mlx_start;
101 ld->sc_dump = ld_mlx_dump;
102 ld->sc_secperunit = ms->ms_size;
103
104 /*
105 * Report on current status, and attach to the ld driver proper.
106 */
107 switch (ms->ms_state) {
108 case MLX_SYSD_ONLINE:
109 statestr = "online";
110 ld->sc_flags = LDF_ENABLED;
111 break;
112
113 case MLX_SYSD_CRITICAL:
114 statestr = "critical";
115 ld->sc_flags = LDF_ENABLED;
116 break;
117
118 case MLX_SYSD_OFFLINE:
119 statestr = "offline";
120 break;
121
122 default:
123 statestr = "state unknown";
124 break;
125 }
126
127 if (ms->ms_raidlevel == MLX_SYS_DRV_JBOD)
128 aprint_normal(": JBOD, %s\n", statestr);
129 else
130 aprint_normal(": RAID%d, %s\n", ms->ms_raidlevel, statestr);
131
132 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
133 }
134
135 static int
ld_mlx_detach(device_t dv,int flags)136 ld_mlx_detach(device_t dv, int flags)
137 {
138 struct ld_mlx_softc *sc = device_private(dv);
139 struct ld_softc *ld = &sc->sc_ld;
140 struct mlx_softc *mlx = device_private(device_parent(dv));
141 int rv;
142
143 if ((rv = ldbegindetach(ld, flags)) != 0)
144 return (rv);
145 ldenddetach(ld);
146 mlx_flush(mlx, 1);
147
148 return (0);
149 }
150
151 static int
ld_mlx_dobio(struct ld_mlx_softc * sc,void * data,int datasize,int blkno,int dowrite,struct buf * bp)152 ld_mlx_dobio(struct ld_mlx_softc *sc, void *data, int datasize, int blkno,
153 int dowrite, struct buf *bp)
154 {
155 struct mlx_ccb *mc;
156 struct mlx_softc *mlx;
157 int s, rv;
158 bus_addr_t sgphys;
159
160 mlx = device_private(device_parent(sc->sc_ld.sc_dv));
161
162 if ((rv = mlx_ccb_alloc(mlx, &mc, bp == NULL)) != 0)
163 return (rv);
164
165 /* Map the data transfer. */
166 rv = mlx_ccb_map(mlx, mc, data, datasize,
167 dowrite ? MC_XFER_OUT : MC_XFER_IN);
168 if (rv != 0) {
169 mlx_ccb_free(mlx, mc);
170 return (rv);
171 }
172
173 /* Build the command. */
174 sgphys = mlx->mlx_sgls_paddr + (MLX_SGL_SIZE * mc->mc_ident);
175 datasize /= MLX_SECTOR_SIZE;
176
177 if (mlx->mlx_ci.ci_iftype <= 2)
178 mlx_make_type1(mc,
179 dowrite ? MLX_CMD_WRITESG_OLD : MLX_CMD_READSG_OLD,
180 datasize & 0xff, blkno, sc->sc_hwunit, sgphys,
181 mc->mc_nsgent);
182 else
183 mlx_make_type5(mc,
184 dowrite ? MLX_CMD_WRITESG : MLX_CMD_READSG,
185 datasize & 0xff,
186 (sc->sc_hwunit << 3) | ((datasize >> 8) & 0x07),
187 blkno, sgphys, mc->mc_nsgent);
188
189 if (bp == NULL) {
190 s = splbio();
191 rv = mlx_ccb_poll(mlx, mc, 10000);
192 mlx_ccb_unmap(mlx, mc);
193 mlx_ccb_free(mlx, mc);
194 splx(s);
195 } else {
196 mc->mc_mx.mx_handler = ld_mlx_handler;
197 mc->mc_mx.mx_context = bp;
198 mc->mc_mx.mx_dv = sc->sc_ld.sc_dv;
199 mlx_ccb_enqueue(mlx, mc);
200 rv = 0;
201 }
202
203 return (rv);
204 }
205
206 static int
ld_mlx_start(struct ld_softc * ld,struct buf * bp)207 ld_mlx_start(struct ld_softc *ld, struct buf *bp)
208 {
209
210 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, bp->b_data,
211 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
212 }
213
214 static void
ld_mlx_handler(struct mlx_ccb * mc)215 ld_mlx_handler(struct mlx_ccb *mc)
216 {
217 struct buf *bp;
218 struct mlx_context *mx;
219 struct ld_mlx_softc *sc;
220 struct mlx_softc *mlx;
221
222 mx = &mc->mc_mx;
223 bp = mx->mx_context;
224 sc = device_private(mx->mx_dv);
225 mlx = device_private(device_parent(sc->sc_ld.sc_dv));
226
227 if (mc->mc_status != MLX_STATUS_OK) {
228 bp->b_error = EIO;
229 bp->b_resid = bp->b_bcount;
230
231 if (mc->mc_status == MLX_STATUS_RDWROFFLINE)
232 printf("%s: drive offline\n",
233 device_xname(sc->sc_ld.sc_dv));
234 else
235 printf("%s: I/O error - %s\n",
236 device_xname(sc->sc_ld.sc_dv),
237 mlx_ccb_diagnose(mc));
238 } else
239 bp->b_resid = 0;
240
241 mlx_ccb_unmap(mlx, mc);
242 mlx_ccb_free(mlx, mc);
243 lddone(&sc->sc_ld, bp);
244 }
245
246 static int
ld_mlx_dump(struct ld_softc * ld,void * data,daddr_t blkno,int blkcnt)247 ld_mlx_dump(struct ld_softc *ld, void *data, daddr_t blkno, int blkcnt)
248 {
249
250 /* ld_mlx_dobio() takes only an 'int' as a disk address */
251 if (blkno + blkcnt - 1 > INT_MAX)
252 return (EIO);
253
254 return (ld_mlx_dobio((struct ld_mlx_softc *)ld, data,
255 blkcnt * ld->sc_secsize, blkno, 1, NULL));
256 }
257
258 MODULE(MODULE_CLASS_DRIVER, ld_mlx, "ld");
259
260 #ifdef _MODULE
261 /*
262 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
263 * XXX it will be defined in the common-code module
264 */
265 #undef CFDRIVER_DECL
266 #define CFDRIVER_DECL(name, class, attr)
267 #include "ioconf.c"
268 #endif
269
270 static int
ld_mlx_modcmd(modcmd_t cmd,void * opaque)271 ld_mlx_modcmd(modcmd_t cmd, void *opaque)
272 {
273 #ifdef _MODULE
274 /*
275 * We ignore the cfdriver_vec[] that ioconf provides, since
276 * the cfdrivers are attached already.
277 */
278 static struct cfdriver * const no_cfdriver_vec[] = { NULL };
279 #endif
280 int error = 0;
281
282 #ifdef _MODULE
283 switch (cmd) {
284 case MODULE_CMD_INIT:
285 error = config_init_component(no_cfdriver_vec,
286 cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx);
287 break;
288 case MODULE_CMD_FINI:
289 error = config_fini_component(no_cfdriver_vec,
290 cfattach_ioconf_ld_mlx, cfdata_ioconf_ld_mlx);
291 break;
292 default:
293 error = ENOTTY;
294 break;
295 }
296 #endif
297
298 return error;
299 }
300