1 /* $NetBSD: ld_icp.c,v 1.32 2020/08/14 09:28:29 chs Exp $ */
2
3 /*-
4 * Copyright (c) 2002 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 * ICP-Vortex "GDT" front-end for ld(4) driver.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: ld_icp.c,v 1.32 2020/08/14 09:28:29 chs 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 <sys/bus.h>
50
51 #include <dev/ldvar.h>
52
53 #include <dev/ic/icpreg.h>
54 #include <dev/ic/icpvar.h>
55
56 #include "ioconf.h"
57
58 struct ld_icp_softc {
59 struct ld_softc sc_ld;
60 int sc_hwunit;
61 };
62
63 static void ld_icp_attach(device_t, device_t, void *);
64 static int ld_icp_detach(device_t, int);
65 static int ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int,
66 struct buf *);
67 static int ld_icp_dump(struct ld_softc *, void *, int, int);
68 static int ld_icp_flush(struct ld_softc *, bool);
69 static int ld_icp_ioctl(struct ld_softc *, u_long, void *, int32_t, bool);
70 static void ld_icp_intr(struct icp_ccb *);
71 static int ld_icp_match(device_t, cfdata_t, void *);
72 static int ld_icp_start(struct ld_softc *, struct buf *);
73
74 static void ld_icp_adjqparam(device_t, int);
75
76 CFATTACH_DECL_NEW(ld_icp, sizeof(struct ld_icp_softc),
77 ld_icp_match, ld_icp_attach, ld_icp_detach, NULL);
78
79 static const struct icp_servicecb ld_icp_servicecb = {
80 ld_icp_adjqparam,
81 };
82
83 static int
ld_icp_match(device_t parent,cfdata_t match,void * aux)84 ld_icp_match(device_t parent, cfdata_t match, void *aux)
85 {
86 struct icp_attach_args *icpa;
87
88 icpa = aux;
89
90 return (icpa->icpa_unit < ICPA_UNIT_SCSI);
91 }
92
93 static void
ld_icp_attach(device_t parent,device_t self,void * aux)94 ld_icp_attach(device_t parent, device_t self, void *aux)
95 {
96 struct icp_attach_args *icpa = aux;
97 struct ld_icp_softc *sc = device_private(self);
98 struct ld_softc *ld = &sc->sc_ld;
99 struct icp_softc *icp = device_private(parent);
100 struct icp_cachedrv *cd = &icp->icp_cdr[icpa->icpa_unit];
101 struct icp_cdevinfo *cdi;
102 const char *str;
103 int t;
104
105 ld->sc_dv = self;
106
107 icp_register_servicecb(icp, icpa->icpa_unit, &ld_icp_servicecb);
108
109 sc->sc_hwunit = icpa->icpa_unit;
110 ld->sc_maxxfer = ICP_MAX_XFER;
111 ld->sc_secsize = ICP_SECTOR_SIZE;
112 ld->sc_start = ld_icp_start;
113 ld->sc_dump = ld_icp_dump;
114 ld->sc_ioctl = ld_icp_ioctl;
115 ld->sc_secperunit = cd->cd_size;
116 ld->sc_flags = LDF_ENABLED;
117 ld->sc_maxqueuecnt = icp->icp_openings;
118
119 if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO,
120 sc->sc_hwunit, sizeof(struct icp_cdevinfo))) {
121 aprint_error(": unable to retrieve device info\n");
122 ld->sc_flags = LDF_ENABLED;
123 goto out;
124 }
125 cdi = (struct icp_cdevinfo *)icp->icp_scr;
126
127 aprint_normal(": <%.8s>, ", cdi->ld_name);
128 t = le32toh(cdi->ld_dtype) >> 16;
129
130 /*
131 * Print device type.
132 */
133 if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1)
134 str = "RAID-1";
135 else if (t == 0)
136 str = "JBOD";
137 else if (t == 1)
138 str = "RAID-0";
139 else if (t == 2)
140 str = "Chain";
141 else
142 str = "unknown type";
143
144 aprint_normal("type: %s, ", str);
145
146 /*
147 * Print device status.
148 */
149 if (t > 2)
150 str = "missing";
151 else if ((cdi->ld_error & 1) != 0) {
152 str = "fault";
153 ld->sc_flags = LDF_ENABLED;
154 } else if ((cdi->ld_error & 2) != 0)
155 str = "invalid";
156 else {
157 str = "optimal";
158 ld->sc_flags = LDF_ENABLED;
159 }
160
161 aprint_normal("status: %s\n", str);
162
163 out:
164 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
165 }
166
167 static int
ld_icp_detach(device_t dv,int flags)168 ld_icp_detach(device_t dv, int flags)
169 {
170 struct ld_softc *ldsc = device_private(dv);
171 int rv;
172
173 if ((rv = ldbegindetach(ldsc, flags)) != 0)
174 return (rv);
175 ldenddetach(ldsc);
176
177 return (0);
178 }
179
180 static int
ld_icp_dobio(struct ld_icp_softc * sc,void * data,int datasize,int blkno,int dowrite,struct buf * bp)181 ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno,
182 int dowrite, struct buf *bp)
183 {
184 struct icp_cachecmd *cc;
185 struct icp_ccb *ic;
186 struct icp_softc *icp;
187 int s, rv;
188
189 icp = device_private(device_parent(sc->sc_ld.sc_dv));
190
191 /*
192 * Allocate a command control block.
193 */
194 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL))
195 return (EAGAIN);
196
197 /*
198 * Map the data transfer.
199 */
200 cc = &ic->ic_cmd.cmd_packet.cc;
201 ic->ic_sg = cc->cc_sg;
202 ic->ic_service = ICP_CACHESERVICE;
203
204 rv = icp_ccb_map(icp, ic, data, datasize,
205 dowrite ? IC_XFER_OUT : IC_XFER_IN);
206 if (rv != 0) {
207 icp_ccb_free(icp, ic);
208 return (rv);
209 }
210
211 /*
212 * Build the command.
213 */
214 ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ));
215 cc->cc_deviceno = htole16(sc->sc_hwunit);
216 cc->cc_blockno = htole32(blkno);
217 cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE);
218 cc->cc_addr = ~0; /* scatter gather */
219 cc->cc_nsgent = htole32(ic->ic_nsgent);
220
221 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd +
222 ic->ic_nsgent * sizeof(*ic->ic_sg);
223
224 /*
225 * Fire it off to the controller.
226 */
227 if (bp == NULL) {
228 s = splbio();
229 rv = icp_ccb_poll(icp, ic, 10000);
230 icp_ccb_unmap(icp, ic);
231 icp_ccb_free(icp, ic);
232 splx(s);
233 } else {
234 ic->ic_intr = ld_icp_intr;
235 ic->ic_context = bp;
236 ic->ic_dv = sc->sc_ld.sc_dv;
237 icp_ccb_enqueue(icp, ic);
238 }
239
240 return (rv);
241 }
242
243 static int
ld_icp_start(struct ld_softc * ld,struct buf * bp)244 ld_icp_start(struct ld_softc *ld, struct buf *bp)
245 {
246
247 return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data,
248 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
249 }
250
251 static int
ld_icp_dump(struct ld_softc * ld,void * data,int blkno,int blkcnt)252 ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
253 {
254
255 return (ld_icp_dobio((struct ld_icp_softc *)ld, data,
256 blkcnt * ld->sc_secsize, blkno, 1, NULL));
257 }
258
259 /* ARGSUSED */
260 static int
ld_icp_flush(struct ld_softc * ld,bool poll)261 ld_icp_flush(struct ld_softc *ld, bool poll)
262 {
263 struct ld_icp_softc *sc;
264 struct icp_softc *icp;
265 struct icp_cachecmd *cc;
266 struct icp_ccb *ic;
267 int rv;
268
269 sc = (struct ld_icp_softc *)ld;
270 icp = device_private(device_parent(ld->sc_dv));
271
272 ic = icp_ccb_alloc_wait(icp);
273 ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH);
274
275 cc = &ic->ic_cmd.cmd_packet.cc;
276 cc->cc_deviceno = htole16(sc->sc_hwunit);
277 cc->cc_blockno = htole32(1);
278 cc->cc_blockcnt = 0;
279 cc->cc_addr = 0;
280 cc->cc_nsgent = 0;
281
282 ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd;
283 ic->ic_service = ICP_CACHESERVICE;
284
285 rv = icp_ccb_wait(icp, ic, 30000);
286 icp_ccb_free(icp, ic);
287
288 return (rv);
289 }
290
291 static int
ld_icp_ioctl(struct ld_softc * ld,u_long cmd,void * addr,int32_t flag,bool poll)292 ld_icp_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll)
293 {
294 int error;
295
296 switch (cmd) {
297 case DIOCCACHESYNC:
298 error = ld_icp_flush(ld, poll);
299 break;
300
301 default:
302 error = EPASSTHROUGH;
303 break;
304 }
305
306 return error;
307 }
308
309 static void
ld_icp_intr(struct icp_ccb * ic)310 ld_icp_intr(struct icp_ccb *ic)
311 {
312 struct buf *bp;
313 struct ld_icp_softc *sc;
314 struct icp_softc *icp;
315
316 bp = ic->ic_context;
317 sc = device_private(ic->ic_dv);
318 icp = device_private(device_parent(sc->sc_ld.sc_dv));
319
320 if (ic->ic_status != ICP_S_OK) {
321 aprint_error_dev(ic->ic_dv, "request failed; status=0x%04x\n",
322 ic->ic_status);
323 bp->b_error = EIO;
324 bp->b_resid = bp->b_bcount;
325
326 icp->icp_evt.size = sizeof(icp->icp_evt.eu.sync);
327 icp->icp_evt.eu.sync.ionode = device_unit(icp->icp_dv);
328 icp->icp_evt.eu.sync.service = icp->icp_service;
329 icp->icp_evt.eu.sync.status = icp->icp_status;
330 icp->icp_evt.eu.sync.info = icp->icp_info;
331 icp->icp_evt.eu.sync.hostdrive = sc->sc_hwunit;
332 if (icp->icp_status >= 0x8000)
333 icp_store_event(icp, GDT_ES_SYNC, 0, &icp->icp_evt);
334 else
335 icp_store_event(icp, GDT_ES_SYNC, icp->icp_service,
336 &icp->icp_evt);
337 } else
338 bp->b_resid = 0;
339
340 icp_ccb_unmap(icp, ic);
341 icp_ccb_free(icp, ic);
342 lddone(&sc->sc_ld, bp);
343 }
344
345 static void
ld_icp_adjqparam(device_t dv,int openings)346 ld_icp_adjqparam(device_t dv, int openings)
347 {
348
349 ldadjqparam(device_private(dv), openings);
350 }
351
352 MODULE(MODULE_CLASS_DRIVER, ld_icp, "ld"); /* no icp module yet */
353
354 #ifdef _MODULE
355 /*
356 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
357 * XXX it will be defined in the common-code module
358 */
359 #undef CFDRIVER_DECL
360 #define CFDRIVER_DECL(name, class, attr)
361 #include "ioconf.c"
362 #endif
363
364 static int
ld_icp_modcmd(modcmd_t cmd,void * opaque)365 ld_icp_modcmd(modcmd_t cmd, void *opaque)
366 {
367 #ifdef _MODULE
368 /*
369 * We ignore the cfdriver_vec[] that ioconf provides, since
370 * the cfdrivers are attached already.
371 */
372 static struct cfdriver * const no_cfdriver_vec[] = { NULL };
373 #endif
374 int error = 0;
375
376 #ifdef _MODULE
377 switch (cmd) {
378 case MODULE_CMD_INIT:
379 error = config_init_component(no_cfdriver_vec,
380 cfattach_ioconf_ld_icp, cfdata_ioconf_ld_icp);
381 break;
382 case MODULE_CMD_FINI:
383 error = config_fini_component(no_cfdriver_vec,
384 cfattach_ioconf_ld_icp, cfdata_ioconf_ld_icp);
385 break;
386 default:
387 error = ENOTTY;
388 break;
389 }
390 #endif
391
392 return error;
393 }
394