xref: /netbsd/sys/dev/i2o/dpti.c (revision c4a72b64)
1 /*	$NetBSD: dpti.c,v 1.10 2002/12/06 11:22:25 ad 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  * Copyright (c) 1996-2000 Distributed Processing Technology Corporation
41  * Copyright (c) 2000 Adaptec Corporation
42  * All rights reserved.
43  *
44  * TERMS AND CONDITIONS OF USE
45  *
46  * Redistribution and use in source form, with or without modification, are
47  * permitted provided that redistributions of source code must retain the
48  * above copyright notice, this list of conditions and the following disclaimer.
49  *
50  * This software is provided `as is' by Adaptec and any express or implied
51  * warranties, including, but not limited to, the implied warranties of
52  * merchantability and fitness for a particular purpose, are disclaimed. In no
53  * event shall Adaptec be liable for any direct, indirect, incidental, special,
54  * exemplary or consequential damages (including, but not limited to,
55  * procurement of substitute goods or services; loss of use, data, or profits;
56  * or business interruptions) however caused and on any theory of liability,
57  * whether in contract, strict liability, or tort (including negligence or
58  * otherwise) arising in any way out of the use of this driver software, even
59  * if advised of the possibility of such damage.
60  */
61 
62 /*
63  * Adaptec/DPT I2O control interface.
64  */
65 
66 #include <sys/cdefs.h>
67 __KERNEL_RCSID(0, "$NetBSD: dpti.c,v 1.10 2002/12/06 11:22:25 ad Exp $");
68 
69 #include "opt_i2o.h"
70 
71 #include <sys/param.h>
72 #include <sys/systm.h>
73 #include <sys/kernel.h>
74 #include <sys/device.h>
75 #include <sys/queue.h>
76 #include <sys/proc.h>
77 #include <sys/endian.h>
78 #include <sys/malloc.h>
79 #include <sys/conf.h>
80 #include <sys/ioctl.h>
81 
82 #include <uvm/uvm_extern.h>
83 
84 #include <machine/bus.h>
85 #ifdef i386
86 #include <machine/pio.h>
87 #endif
88 
89 #include <dev/i2o/i2o.h>
90 #include <dev/i2o/i2odpt.h>
91 #include <dev/i2o/iopio.h>
92 #include <dev/i2o/iopvar.h>
93 #include <dev/i2o/dptivar.h>
94 
95 #ifdef I2ODEBUG
96 #define	DPRINTF(x)		printf x
97 #else
98 #define	DPRINTF(x)
99 #endif
100 
101 static struct dpt_sig dpti_sig = {
102 	{ 'd', 'P', 't', 'S', 'i', 'G'},
103 	SIG_VERSION,
104 #if defined(i386)
105 	PROC_INTEL,
106 #elif defined(powerpc)
107 	PROC_POWERPC,
108 #elif defined(alpha)
109 	PROC_ALPHA,
110 #elif defined(__mips__)
111 	PROC_MIPS,
112 #elif defined(sparc64)
113 	PROC_ULTRASPARC,
114 #endif
115 #if defined(i386)
116 	PROC_386 | PROC_486 | PROC_PENTIUM | PROC_SEXIUM,
117 #else
118 	0,
119 #endif
120 	FT_HBADRVR,
121 	0,
122 	OEM_DPT,
123 	OS_FREE_BSD,	/* XXX */
124 	CAP_ABOVE16MB,
125 	DEV_ALL,
126 	ADF_ALL_SC5,
127 	0,
128 	0,
129 	DPTI_VERSION,
130 	DPTI_REVISION,
131 	DPTI_SUBREVISION,
132 	DPTI_MONTH,
133 	DPTI_DAY,
134 	DPTI_YEAR,
135 	""		/* Will be filled later */
136 };
137 
138 void	dpti_attach(struct device *, struct device *, void *);
139 int	dpti_blinkled(struct dpti_softc *);
140 int	dpti_ctlrinfo(struct dpti_softc *, int, caddr_t);
141 int	dpti_match(struct device *, struct cfdata *, void *);
142 int	dpti_passthrough(struct dpti_softc *, caddr_t, struct proc *);
143 int	dpti_sysinfo(struct dpti_softc *, int, caddr_t);
144 
145 dev_type_open(dptiopen);
146 dev_type_ioctl(dptiioctl);
147 
148 const struct cdevsw dpti_cdevsw = {
149 	dptiopen, nullclose, noread, nowrite, dptiioctl,
150 	nostop, notty, nopoll, nommap, nokqfilter,
151 };
152 
153 extern struct cfdriver dpti_cd;
154 
155 CFATTACH_DECL(dpti, sizeof(struct dpti_softc),
156     dpti_match, dpti_attach, NULL, NULL);
157 
158 int
159 dpti_match(struct device *parent, struct cfdata *match, void *aux)
160 {
161 	struct iop_attach_args *ia;
162 	struct iop_softc *iop;
163 
164 	ia = aux;
165 	iop = (struct iop_softc *)parent;
166 
167 	if (ia->ia_class != I2O_CLASS_ANY || ia->ia_tid != I2O_TID_IOP)
168 		return (0);
169 
170 	if (le16toh(iop->sc_status.orgid) != I2O_ORG_DPT)
171 		return (0);
172 
173 	return (1);
174 }
175 
176 void
177 dpti_attach(struct device *parent, struct device *self, void *aux)
178 {
179 	struct iop_softc *iop;
180 	struct dpti_softc *sc;
181 	struct {
182 		struct	i2o_param_op_results pr;
183 		struct	i2o_param_read_results prr;
184 		struct	i2o_dpt_param_exec_iop_buffers dib;
185 	} __attribute__ ((__packed__)) param;
186 	int rv;
187 
188 	sc = (struct dpti_softc *)self;
189 	iop = (struct iop_softc *)parent;
190 
191 	/*
192 	 * Tell the world what we are.  The description in the signature
193 	 * must be no more than 46 bytes long (see dptivar.h).
194 	 */
195 	printf(": DPT/Adaptec RAID management interface\n");
196 	sprintf(dpti_sig.dsDescription, "NetBSD %s I2O OSM", osrelease);
197 
198 	rv = iop_field_get_all(iop, I2O_TID_IOP,
199 	    I2O_DPT_PARAM_EXEC_IOP_BUFFERS, &param,
200 	    sizeof(param), NULL);
201 	if (rv != 0)
202 		return;
203 
204 	sc->sc_blinkled = le32toh(param.dib.serialoutputoff) + 8;
205 }
206 
207 int
208 dptiopen(dev_t dev, int flag, int mode, struct proc *p)
209 {
210 
211 	if (securelevel > 1)
212 		return (EPERM);
213 	if (device_lookup(&dpti_cd, minor(dev)) == NULL)
214 		return (ENXIO);
215 
216 	return (0);
217 }
218 
219 int
220 dptiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
221 {
222 	struct iop_softc *iop;
223 	struct dpti_softc *sc;
224 	struct ioctl_pt *pt;
225 	int i, size, rv, linux;
226 
227 	sc = device_lookup(&dpti_cd, minor(dev));
228 	iop = (struct iop_softc *)sc->sc_dv.dv_parent;
229 
230 	if (cmd == PTIOCLINUX) {
231 		pt = (struct ioctl_pt *)data;
232 		size = IOCPARM_LEN(pt->com);
233 		cmd = pt->com & 0xffff;
234 		data = pt->data;
235 		linux = 1;
236 	} else {
237 		size = IOCPARM_LEN(cmd);
238 		cmd = cmd & 0xffff;
239 		linux = 0;
240 	}
241 
242 	switch (cmd) {
243 	case DPT_SIGNATURE:
244 		if (size > sizeof(dpti_sig))
245 			size = sizeof(dpti_sig);
246 		memcpy(data, &dpti_sig, size);
247 		return (0);
248 
249 	case DPT_CTRLINFO:
250 		return (dpti_ctlrinfo(sc, size, data));
251 
252 	case DPT_SYSINFO:
253 		return (dpti_sysinfo(sc, size, data));
254 
255 	case DPT_BLINKLED:
256 		if ((i = dpti_blinkled(sc)) == -1)
257 			i = 0;
258 
259 		if (size == 0)
260 			return (copyout(&i, *(caddr_t *)data, sizeof(i)));
261 
262 		*(int *)data = i;
263 		return (0);
264 
265 	case DPT_TARGET_BUSY:
266 		/*
267 		 * XXX This is here to stop linux_machdepioctl() from
268 		 * whining about an unknown ioctl.
269 		 */
270 		return (EIO);
271 
272 	case DPT_I2OUSRCMD:
273 		if (sc->sc_nactive++ >= 2)
274 			tsleep(&sc->sc_nactive, PRIBIO, "dptislp", 0);
275 
276 		if (linux)
277 			rv = dpti_passthrough(sc, data, p);
278 		else
279 			rv = dpti_passthrough(sc, *(caddr_t *)data, p);
280 
281 		sc->sc_nactive--;
282 		wakeup_one(&sc->sc_nactive);
283 		return (rv);
284 
285 	case DPT_I2ORESETCMD:
286 		printf("%s: I2ORESETCMD not implemented\n",
287 		    sc->sc_dv.dv_xname);
288 		return (EOPNOTSUPP);
289 
290 	case DPT_I2ORESCANCMD:
291 		return (iop_reconfigure(iop, 0));
292 
293 	default:
294 		return (ENOTTY);
295 	}
296 }
297 
298 int
299 dpti_blinkled(struct dpti_softc *sc)
300 {
301 	struct iop_softc *iop;
302 	u_int v;
303 
304 	iop = (struct iop_softc *)sc->sc_dv.dv_parent;
305 
306 	v = bus_space_read_1(iop->sc_iot, iop->sc_ioh, sc->sc_blinkled + 0);
307 	if (v == 0xbc) {
308 		v = bus_space_read_1(iop->sc_iot, iop->sc_ioh,
309 		    sc->sc_blinkled + 1);
310 		return (v);
311 	}
312 
313 	return (-1);
314 }
315 
316 int
317 dpti_ctlrinfo(struct dpti_softc *sc, int size, caddr_t data)
318 {
319 	struct dpt_ctlrinfo info;
320 	struct iop_softc *iop;
321 	int rv, i;
322 
323 	iop = (struct iop_softc *)sc->sc_dv.dv_parent;
324 
325 	memset(&info, 0, sizeof(info));
326 
327 	info.length = sizeof(info) - sizeof(u_int16_t);
328 	info.drvrHBAnum = sc->sc_dv.dv_unit;
329 	info.baseAddr = iop->sc_memaddr;
330 	if ((i = dpti_blinkled(sc)) == -1)
331 		i = 0;
332 	info.blinkState = i;
333 	info.pciBusNum = iop->sc_pcibus;
334 	info.pciDeviceNum = iop->sc_pcidev;
335 	info.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
336 	info.Interrupt = 10;			/* XXX */
337 
338 	if (size > sizeof(*data)) {
339 		memcpy(data, &info, min(sizeof(info), size));
340 		rv = 0;
341 	} else
342 		rv = copyout(&info, *(caddr_t *)data, sizeof(info));
343 
344 	return (rv);
345 }
346 
347 int
348 dpti_sysinfo(struct dpti_softc *sc, int size, caddr_t data)
349 {
350 	struct dpt_sysinfo info;
351 	int rv;
352 #ifdef i386
353 	int i, j;
354 #endif
355 
356 	memset(&info, 0, sizeof(info));
357 
358 #ifdef i386
359 	outb (0x70, 0x12);
360 	i = inb(0x71);
361 	j = i >> 4;
362 	if (i == 0x0f) {
363 		outb (0x70, 0x19);
364 		j = inb (0x71);
365 	}
366 	info.drive0CMOS = j;
367 
368 	j = i & 0x0f;
369 	if (i == 0x0f) {
370 		outb (0x70, 0x1a);
371 		j = inb (0x71);
372 	}
373 	info.drive1CMOS = j;
374 	info.processorFamily = dpti_sig.dsProcessorFamily;
375 
376 	/*
377 	 * Get the conventional memory size from CMOS.
378 	 */
379 	outb(0x70, 0x16);
380 	j = inb(0x71);
381 	j <<= 8;
382 	outb(0x70, 0x15);
383 	j |= inb(0x71);
384 	info.conventionalMemSize = j;
385 
386 	/*
387 	 * Get the extended memory size from CMOS.
388 	 */
389 	outb(0x70, 0x31);
390 	j = inb(0x71);
391 	j <<= 8;
392 	outb(0x70, 0x30);
393 	j |= inb(0x71);
394 	info.extendedMemSize = j;
395 
396 	switch (cpu_class) {
397 	case CPUCLASS_386:
398 		info.processorType = PROC_386;
399 		break;
400 	case CPUCLASS_486:
401 		info.processorType = PROC_486;
402 		break;
403 	case CPUCLASS_586:
404 		info.processorType = PROC_PENTIUM;
405 		break;
406 	case CPUCLASS_686:
407 	default:
408 		info.processorType = PROC_SEXIUM;
409 		break;
410 	}
411 
412 	info.flags = SI_CMOS_Valid | SI_BusTypeValid |
413 	    SI_MemorySizeValid | SI_NO_SmartROM;
414 #else
415 	info.flags = SI_BusTypeValid | SI_NO_SmartROM;
416 #endif
417 
418 	info.busType = SI_PCI_BUS;
419 
420 	/*
421 	 * Copy out the info structure to the user.
422 	 */
423 	if (size > sizeof(*data)) {
424 		memcpy(data, &info, min(sizeof(info), size));
425 		rv = 0;
426 	} else
427 		rv = copyout(&info, *(caddr_t *)data, sizeof(info));
428 
429 	return (rv);
430 }
431 
432 int
433 dpti_passthrough(struct dpti_softc *sc, caddr_t data, struct proc *proc)
434 {
435 	struct iop_softc *iop;
436 	struct i2o_msg mh, *mf;
437 	struct i2o_reply rh;
438 	struct iop_msg *im;
439 	struct dpti_ptbuf bufs[IOP_MAX_MSG_XFERS];
440 	u_int32_t mbtmp[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)];
441 	u_int32_t rbtmp[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)];
442 	int rv, msgsize, repsize, sgoff, i, mapped, nbuf, nfrag, j, sz;
443 	u_int32_t *p, *pmax, *pstart;
444 
445 	iop = (struct iop_softc *)sc->sc_dv.dv_parent;
446 	im = NULL;
447 
448 	if ((rv = dpti_blinkled(sc)) != -1) {
449 		if (rv != 0) {
450 			printf("%s: adapter blinkled = 0x%02x\n",
451 			    sc->sc_dv.dv_xname, rv);
452 			return (EIO);
453 		}
454 	}
455 
456 	/*
457 	 * Copy in the message frame header and determine the size of the
458 	 * full message frame.
459 	 */
460 	if ((rv = copyin(data, &mh, sizeof(mh))) != 0) {
461 		DPRINTF(("%s: message copyin failed\n",
462 		    sc->sc_dv.dv_xname));
463 		return (rv);
464 	}
465 
466 	msgsize = (mh.msgflags >> 14) & ~3;
467 	if (msgsize < sizeof(mh) || msgsize >= IOP_MAX_MSG_SIZE) {
468 		DPRINTF(("%s: bad message frame size\n",
469 		    sc->sc_dv.dv_xname));
470 		return (EINVAL);
471 	}
472 
473 	/*
474 	 * Handle special commands.
475 	 */
476 	switch (mh.msgfunc >> 24) {
477 	case I2O_EXEC_IOP_RESET:
478 		printf("%s: I2O_EXEC_IOP_RESET not implemented\n",
479 		    sc->sc_dv.dv_xname);
480 		return (EOPNOTSUPP);
481 
482 	case I2O_EXEC_OUTBOUND_INIT:
483 		printf("%s: I2O_EXEC_OUTBOUND_INIT not implemented\n",
484 		    sc->sc_dv.dv_xname);
485 		return (EOPNOTSUPP);
486 
487 	case I2O_EXEC_SYS_TAB_SET:
488 		printf("%s: I2O_EXEC_SYS_TAB_SET not implemented\n",
489 		    sc->sc_dv.dv_xname);
490 		return (EOPNOTSUPP);
491 
492 	case I2O_EXEC_STATUS_GET:
493 		if ((rv = iop_status_get(iop, 0)) == 0)
494 			rv = copyout(&iop->sc_status, data + msgsize,
495 			    sizeof(iop->sc_status));
496 		return (rv);
497 	}
498 
499 	/*
500 	 * Copy in the full message frame.
501 	 */
502 	if ((rv = copyin(data, mbtmp, msgsize)) != 0) {
503 		DPRINTF(("%s: full message copyin failed\n",
504 		    sc->sc_dv.dv_xname));
505 		return (rv);
506 	}
507 
508 	/*
509 	 * Determine the size of the reply frame, and copy it in.
510 	 */
511 	if ((rv = copyin(data + msgsize, &rh, sizeof(rh))) != 0) {
512 		DPRINTF(("%s: reply copyin failed\n",
513 		    sc->sc_dv.dv_xname));
514 		return (rv);
515 	}
516 
517 	repsize = (rh.msgflags >> 14) & ~3;
518 	if (repsize < sizeof(rh) || repsize >= IOP_MAX_MSG_SIZE) {
519 		DPRINTF(("%s: bad reply header size\n",
520 		    sc->sc_dv.dv_xname));
521 		return (EINVAL);
522 	}
523 
524 	if ((rv = copyin(data + msgsize, rbtmp, repsize)) != 0) {
525 		DPRINTF(("%s: reply too large\n", sc->sc_dv.dv_xname));
526 		return (rv);
527 	}
528 
529 	/*
530 	 * If the message has a scatter gather list, it must be comprised of
531 	 * simple elements.  If any one transfer contains multiple segments,
532 	 * we allocate a temporary buffer for it; otherwise, the buffer will
533 	 * be mapped directly.
534 	 */
535 	if ((sgoff = ((mh.msgflags >> 4) & 15)) != 0) {
536 		if ((sgoff + 2) > (msgsize >> 2)) {
537 			DPRINTF(("%s: invalid message size fields\n",
538 			    sc->sc_dv.dv_xname));
539 			return (EINVAL);
540 		}
541 
542 		memset(bufs, 0, sizeof(bufs));
543 	} else
544 		nbuf = -1;
545 
546 	rv = EINVAL;
547 
548 	if (sgoff != 0) {
549 		p = mbtmp + sgoff;
550 		pmax = mbtmp + (msgsize >> 2) - 2;
551 
552 		for (nbuf = 0; nbuf < IOP_MAX_MSG_XFERS; nbuf++, p += 2) {
553 			if (p > pmax) {
554 				DPRINTF(("%s: invalid SGL (1)\n",
555 				    sc->sc_dv.dv_xname));
556 				goto bad;
557 			}
558 
559 			if ((p[0] & 0x30000000) != I2O_SGL_SIMPLE) {
560 				DPRINTF(("%s: invalid SGL (2)\n",
561 				    sc->sc_dv.dv_xname));
562 				goto bad;
563 			}
564 
565 			bufs[nbuf].db_out = (p[0] & I2O_SGL_DATA_OUT) != 0;
566 			bufs[nbuf].db_ptr = NULL;
567 
568 			if ((p[0] & I2O_SGL_END_BUFFER) != 0) {
569 				if ((p[0] & 0x00ffffff) > IOP_MAX_XFER) {
570 					DPRINTF(("%s: buffer too large\n",
571 					    sc->sc_dv.dv_xname));
572 					goto bad;
573 				}
574 
575 				bufs[nbuf].db_ptr = (caddr_t)p[1];
576 				bufs[nbuf].db_proc = proc;
577 				bufs[nbuf].db_size = p[0] & 0x00ffffff;
578 
579 				if ((p[0] & I2O_SGL_END) != 0)
580 					break;
581 
582 				continue;
583 			}
584 
585 			/*
586 			 * The buffer has multiple segments.  Determine the
587 			 * total size.
588 			 */
589 			nfrag = 0;
590 			sz = 0;
591 			for (pstart = p; p <= pmax; p += 2) {
592 				if (nfrag == DPTI_MAX_SEGS) {
593 					DPRINTF(("%s: too many segments\n",
594 					    sc->sc_dv.dv_xname));
595 					goto bad;
596 				}
597 
598 				bufs[nbuf].db_frags[nfrag].iov_len =
599 				    p[0] & 0x00ffffff;
600 				bufs[nbuf].db_frags[nfrag].iov_base =
601 				    (void *)p[1];
602 
603 				sz += p[0] & 0x00ffffff;
604 				nfrag++;
605 
606 				if ((p[0] & I2O_SGL_END) != 0) {
607 					if ((p[0] & I2O_SGL_END_BUFFER) == 0) {
608 						DPRINTF((
609 						    "%s: invalid SGL (3)\n",
610 						    sc->sc_dv.dv_xname));
611 						goto bad;
612 					}
613 					break;
614 				}
615 				if ((p[0] & I2O_SGL_END_BUFFER) != 0)
616 					break;
617 			}
618 			bufs[nbuf].db_nfrag = nfrag;
619 
620 			if (p > pmax) {
621 				DPRINTF(("%s: invalid SGL (4)\n",
622 				    sc->sc_dv.dv_xname));
623 				goto bad;
624 			}
625 
626 			if (sz > IOP_MAX_XFER) {
627 				DPRINTF(("%s: buffer too large\n",
628 				    sc->sc_dv.dv_xname));
629 				goto bad;
630 			}
631 
632 			bufs[nbuf].db_size = sz;
633 			bufs[nbuf].db_ptr = malloc(sz, M_DEVBUF, M_WAITOK);
634 			if (bufs[nbuf].db_ptr == NULL) {
635 				DPRINTF(("%s: allocation failure\n",
636 				    sc->sc_dv.dv_xname));
637 				rv = ENOMEM;
638 				goto bad;
639 			}
640 
641 			for (i = 0, sz = 0; i < bufs[nbuf].db_nfrag; i++) {
642 				rv = copyin(bufs[nbuf].db_frags[i].iov_base,
643 				    bufs[nbuf].db_ptr + sz,
644 				    bufs[nbuf].db_frags[i].iov_len);
645 				if (rv != 0) {
646 					DPRINTF(("%s: frag copyin\n",
647 					    sc->sc_dv.dv_xname));
648 					goto bad;
649 				}
650 				sz += bufs[nbuf].db_frags[i].iov_len;
651 			}
652 
653 			if ((p[0] & I2O_SGL_END) != 0)
654 				break;
655 		}
656 
657 		if (nbuf == IOP_MAX_MSG_XFERS) {
658 			DPRINTF(("%s: too many transfers\n",
659 			    sc->sc_dv.dv_xname));
660 			goto bad;
661 		}
662 	}
663 
664 	/*
665 	 * Allocate a wrapper, and adjust the message header fields to
666 	 * indicate that no scatter-gather list is currently present.
667 	 */
668 	mapped = 0;
669 
670 	im = iop_msg_alloc(iop, IM_WAIT | IM_NOSTATUS);
671 	im->im_rb = (struct i2o_reply *)rbtmp;
672 	mf = (struct i2o_msg *)mbtmp;
673 	mf->msgictx = IOP_ICTX;
674 	mf->msgtctx = im->im_tctx;
675 
676 	if (sgoff != 0)
677 		mf->msgflags = (mf->msgflags & 0xff0f) | (sgoff << 16);
678 
679 	/*
680 	 * Map the data transfer(s).
681 	 */
682 	for (i = 0; i <= nbuf; i++) {
683 		rv = iop_msg_map(iop, im, mbtmp, bufs[i].db_ptr,
684 		    bufs[i].db_size, bufs[i].db_out, bufs[i].db_proc);
685 		if (rv != 0) {
686 			DPRINTF(("%s: msg_map failed, rv = %d\n",
687 			    sc->sc_dv.dv_xname, rv));
688 			goto bad;
689 		}
690 		mapped = 1;
691 	}
692 
693 	/*
694 	 * Start the command and sleep until it completes.
695 	 */
696 	if ((rv = iop_msg_post(iop, im, mbtmp, 5*60*1000)) != 0)
697 		goto bad;
698 
699 	/*
700 	 * Copy out the reply frame.
701 	 */
702 	if ((rv = copyout(rbtmp, data + msgsize, repsize)) != 0)
703 		DPRINTF(("%s: reply copyout() failed\n",
704 		    sc->sc_dv.dv_xname));
705 
706  bad:
707 	/*
708 	 * Free resources and return to the caller.
709 	 */
710 	if (im != NULL) {
711 		if (mapped)
712 			iop_msg_unmap(iop, im);
713 		iop_msg_free(iop, im);
714 	}
715 
716 	for (i = 0; i <= nbuf; i++) {
717 		if (bufs[i].db_proc != NULL)
718 			continue;
719 
720 		if (!bufs[i].db_out && rv == 0) {
721 			for (j = 0, sz = 0; j < bufs[i].db_nfrag; j++) {
722 				rv = copyout(bufs[i].db_ptr + sz,
723 				    bufs[i].db_frags[j].iov_base,
724 				    bufs[i].db_frags[j].iov_len);
725 				if (rv != 0)
726 					break;
727 				sz += bufs[i].db_frags[j].iov_len;
728 			}
729 		}
730 
731 		if (bufs[i].db_ptr != NULL)
732 			free(bufs[i].db_ptr, M_DEVBUF);
733 	}
734 
735 	return (rv);
736 }
737