xref: /freebsd/sys/dev/mps/mps_user.c (revision f6a3b357e9be4c6423c85eff9a847163a0d307c8)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2008 Yahoo!, Inc.
5  * All rights reserved.
6  * Written by: John Baldwin <jhb@FreeBSD.org>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD userland interface
33  */
34 /*-
35  * Copyright (c) 2011-2015 LSI Corp.
36  * Copyright (c) 2013-2015 Avago Technologies
37  * All rights reserved.
38  *
39  * Redistribution and use in source and binary forms, with or without
40  * modification, are permitted provided that the following conditions
41  * are met:
42  * 1. Redistributions of source code must retain the above copyright
43  *    notice, this list of conditions and the following disclaimer.
44  * 2. Redistributions in binary form must reproduce the above copyright
45  *    notice, this list of conditions and the following disclaimer in the
46  *    documentation and/or other materials provided with the distribution.
47  *
48  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58  * SUCH DAMAGE.
59  *
60  * Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD
61  *
62  * $FreeBSD$
63  */
64 
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
67 
68 /* TODO Move headers to mpsvar */
69 #include <sys/types.h>
70 #include <sys/param.h>
71 #include <sys/systm.h>
72 #include <sys/kernel.h>
73 #include <sys/selinfo.h>
74 #include <sys/module.h>
75 #include <sys/bus.h>
76 #include <sys/conf.h>
77 #include <sys/bio.h>
78 #include <sys/malloc.h>
79 #include <sys/uio.h>
80 #include <sys/sysctl.h>
81 #include <sys/ioccom.h>
82 #include <sys/endian.h>
83 #include <sys/queue.h>
84 #include <sys/kthread.h>
85 #include <sys/taskqueue.h>
86 #include <sys/proc.h>
87 #include <sys/sysent.h>
88 
89 #include <machine/bus.h>
90 #include <machine/resource.h>
91 #include <sys/rman.h>
92 
93 #include <cam/cam.h>
94 #include <cam/cam_ccb.h>
95 #include <cam/scsi/scsi_all.h>
96 
97 #include <dev/mps/mpi/mpi2_type.h>
98 #include <dev/mps/mpi/mpi2.h>
99 #include <dev/mps/mpi/mpi2_ioc.h>
100 #include <dev/mps/mpi/mpi2_cnfg.h>
101 #include <dev/mps/mpi/mpi2_init.h>
102 #include <dev/mps/mpi/mpi2_tool.h>
103 #include <dev/mps/mps_ioctl.h>
104 #include <dev/mps/mpsvar.h>
105 #include <dev/mps/mps_table.h>
106 #include <dev/mps/mps_sas.h>
107 #include <dev/pci/pcivar.h>
108 #include <dev/pci/pcireg.h>
109 
110 static d_open_t		mps_open;
111 static d_close_t	mps_close;
112 static d_ioctl_t	mps_ioctl_devsw;
113 
114 static struct cdevsw mps_cdevsw = {
115 	.d_version =	D_VERSION,
116 	.d_flags =	0,
117 	.d_open =	mps_open,
118 	.d_close =	mps_close,
119 	.d_ioctl =	mps_ioctl_devsw,
120 	.d_name =	"mps",
121 };
122 
123 typedef int (mps_user_f)(struct mps_command *, struct mps_usr_command *);
124 static mps_user_f	mpi_pre_ioc_facts;
125 static mps_user_f	mpi_pre_port_facts;
126 static mps_user_f	mpi_pre_fw_download;
127 static mps_user_f	mpi_pre_fw_upload;
128 static mps_user_f	mpi_pre_sata_passthrough;
129 static mps_user_f	mpi_pre_smp_passthrough;
130 static mps_user_f	mpi_pre_config;
131 static mps_user_f	mpi_pre_sas_io_unit_control;
132 
133 static int mps_user_read_cfg_header(struct mps_softc *,
134 				    struct mps_cfg_page_req *);
135 static int mps_user_read_cfg_page(struct mps_softc *,
136 				  struct mps_cfg_page_req *, void *);
137 static int mps_user_read_extcfg_header(struct mps_softc *,
138 				     struct mps_ext_cfg_page_req *);
139 static int mps_user_read_extcfg_page(struct mps_softc *,
140 				     struct mps_ext_cfg_page_req *, void *);
141 static int mps_user_write_cfg_page(struct mps_softc *,
142 				   struct mps_cfg_page_req *, void *);
143 static int mps_user_setup_request(struct mps_command *,
144 				  struct mps_usr_command *);
145 static int mps_user_command(struct mps_softc *, struct mps_usr_command *);
146 
147 static int mps_user_pass_thru(struct mps_softc *sc, mps_pass_thru_t *data);
148 static void mps_user_get_adapter_data(struct mps_softc *sc,
149     mps_adapter_data_t *data);
150 static void mps_user_read_pci_info(struct mps_softc *sc,
151     mps_pci_info_t *data);
152 static uint8_t mps_get_fw_diag_buffer_number(struct mps_softc *sc,
153     uint32_t unique_id);
154 static int mps_post_fw_diag_buffer(struct mps_softc *sc,
155     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code);
156 static int mps_release_fw_diag_buffer(struct mps_softc *sc,
157     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code,
158     uint32_t diag_type);
159 static int mps_diag_register(struct mps_softc *sc,
160     mps_fw_diag_register_t *diag_register, uint32_t *return_code);
161 static int mps_diag_unregister(struct mps_softc *sc,
162     mps_fw_diag_unregister_t *diag_unregister, uint32_t *return_code);
163 static int mps_diag_query(struct mps_softc *sc, mps_fw_diag_query_t *diag_query,
164     uint32_t *return_code);
165 static int mps_diag_read_buffer(struct mps_softc *sc,
166     mps_diag_read_buffer_t *diag_read_buffer, uint8_t *ioctl_buf,
167     uint32_t *return_code);
168 static int mps_diag_release(struct mps_softc *sc,
169     mps_fw_diag_release_t *diag_release, uint32_t *return_code);
170 static int mps_do_diag_action(struct mps_softc *sc, uint32_t action,
171     uint8_t *diag_action, uint32_t length, uint32_t *return_code);
172 static int mps_user_diag_action(struct mps_softc *sc, mps_diag_action_t *data);
173 static void mps_user_event_query(struct mps_softc *sc, mps_event_query_t *data);
174 static void mps_user_event_enable(struct mps_softc *sc,
175     mps_event_enable_t *data);
176 static int mps_user_event_report(struct mps_softc *sc,
177     mps_event_report_t *data);
178 static int mps_user_reg_access(struct mps_softc *sc, mps_reg_access_t *data);
179 static int mps_user_btdh(struct mps_softc *sc, mps_btdh_mapping_t *data);
180 
181 MALLOC_DEFINE(M_MPSUSER, "mps_user", "Buffers for mps(4) ioctls");
182 
183 /* Macros from compat/freebsd32/freebsd32.h */
184 #define	PTRIN(v)	(void *)(uintptr_t)(v)
185 #define	PTROUT(v)	(uint32_t)(uintptr_t)(v)
186 
187 #define	CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
188 #define	PTRIN_CP(src,dst,fld)				\
189 	do { (dst).fld = PTRIN((src).fld); } while (0)
190 #define	PTROUT_CP(src,dst,fld) \
191 	do { (dst).fld = PTROUT((src).fld); } while (0)
192 
193 int
194 mps_attach_user(struct mps_softc *sc)
195 {
196 	int unit;
197 
198 	unit = device_get_unit(sc->mps_dev);
199 	sc->mps_cdev = make_dev(&mps_cdevsw, unit, UID_ROOT, GID_OPERATOR, 0640,
200 	    "mps%d", unit);
201 	if (sc->mps_cdev == NULL) {
202 		return (ENOMEM);
203 	}
204 	sc->mps_cdev->si_drv1 = sc;
205 	return (0);
206 }
207 
208 void
209 mps_detach_user(struct mps_softc *sc)
210 {
211 
212 	/* XXX: do a purge of pending requests? */
213 	if (sc->mps_cdev != NULL)
214 		destroy_dev(sc->mps_cdev);
215 }
216 
217 static int
218 mps_open(struct cdev *dev, int flags, int fmt, struct thread *td)
219 {
220 
221 	return (0);
222 }
223 
224 static int
225 mps_close(struct cdev *dev, int flags, int fmt, struct thread *td)
226 {
227 
228 	return (0);
229 }
230 
231 static int
232 mps_user_read_cfg_header(struct mps_softc *sc,
233     struct mps_cfg_page_req *page_req)
234 {
235 	MPI2_CONFIG_PAGE_HEADER *hdr;
236 	struct mps_config_params params;
237 	int	    error;
238 
239 	hdr = &params.hdr.Struct;
240 	params.action = MPI2_CONFIG_ACTION_PAGE_HEADER;
241 	params.page_address = le32toh(page_req->page_address);
242 	hdr->PageVersion = 0;
243 	hdr->PageLength = 0;
244 	hdr->PageNumber = page_req->header.PageNumber;
245 	hdr->PageType = page_req->header.PageType;
246 	params.buffer = NULL;
247 	params.length = 0;
248 	params.callback = NULL;
249 
250 	if ((error = mps_read_config_page(sc, &params)) != 0) {
251 		/*
252 		 * Leave the request. Without resetting the chip, it's
253 		 * still owned by it and we'll just get into trouble
254 		 * freeing it now. Mark it as abandoned so that if it
255 		 * shows up later it can be freed.
256 		 */
257 		mps_printf(sc, "read_cfg_header timed out\n");
258 		return (ETIMEDOUT);
259 	}
260 
261 	page_req->ioc_status = htole16(params.status);
262 	if ((page_req->ioc_status & MPI2_IOCSTATUS_MASK) ==
263 	    MPI2_IOCSTATUS_SUCCESS) {
264 		bcopy(hdr, &page_req->header, sizeof(page_req->header));
265 	}
266 
267 	return (0);
268 }
269 
270 static int
271 mps_user_read_cfg_page(struct mps_softc *sc, struct mps_cfg_page_req *page_req,
272     void *buf)
273 {
274 	MPI2_CONFIG_PAGE_HEADER *reqhdr, *hdr;
275 	struct mps_config_params params;
276 	int	      error;
277 
278 	reqhdr = buf;
279 	hdr = &params.hdr.Struct;
280 	hdr->PageVersion = reqhdr->PageVersion;
281 	hdr->PageLength = reqhdr->PageLength;
282 	hdr->PageNumber = reqhdr->PageNumber;
283 	hdr->PageType = reqhdr->PageType & MPI2_CONFIG_PAGETYPE_MASK;
284 	params.action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT;
285 	params.page_address = le32toh(page_req->page_address);
286 	params.buffer = buf;
287 	params.length = le32toh(page_req->len);
288 	params.callback = NULL;
289 
290 	if ((error = mps_read_config_page(sc, &params)) != 0) {
291 		mps_printf(sc, "mps_user_read_cfg_page timed out\n");
292 		return (ETIMEDOUT);
293 	}
294 
295 	page_req->ioc_status = htole16(params.status);
296 	return (0);
297 }
298 
299 static int
300 mps_user_read_extcfg_header(struct mps_softc *sc,
301     struct mps_ext_cfg_page_req *ext_page_req)
302 {
303 	MPI2_CONFIG_EXTENDED_PAGE_HEADER *hdr;
304 	struct mps_config_params params;
305 	int	    error;
306 
307 	hdr = &params.hdr.Ext;
308 	params.action = MPI2_CONFIG_ACTION_PAGE_HEADER;
309 	hdr->PageVersion = ext_page_req->header.PageVersion;
310 	hdr->PageType = MPI2_CONFIG_PAGETYPE_EXTENDED;
311 	hdr->ExtPageLength = 0;
312 	hdr->PageNumber = ext_page_req->header.PageNumber;
313 	hdr->ExtPageType = ext_page_req->header.ExtPageType;
314 	params.page_address = le32toh(ext_page_req->page_address);
315 	params.buffer = NULL;
316 	params.length = 0;
317 	params.callback = NULL;
318 
319 	if ((error = mps_read_config_page(sc, &params)) != 0) {
320 		/*
321 		 * Leave the request. Without resetting the chip, it's
322 		 * still owned by it and we'll just get into trouble
323 		 * freeing it now. Mark it as abandoned so that if it
324 		 * shows up later it can be freed.
325 		 */
326 		mps_printf(sc, "mps_user_read_extcfg_header timed out\n");
327 		return (ETIMEDOUT);
328 	}
329 
330 	ext_page_req->ioc_status = htole16(params.status);
331 	if ((ext_page_req->ioc_status & MPI2_IOCSTATUS_MASK) ==
332 	    MPI2_IOCSTATUS_SUCCESS) {
333 		ext_page_req->header.PageVersion = hdr->PageVersion;
334 		ext_page_req->header.PageNumber = hdr->PageNumber;
335 		ext_page_req->header.PageType = hdr->PageType;
336 		ext_page_req->header.ExtPageLength = hdr->ExtPageLength;
337 		ext_page_req->header.ExtPageType = hdr->ExtPageType;
338 	}
339 
340 	return (0);
341 }
342 
343 static int
344 mps_user_read_extcfg_page(struct mps_softc *sc,
345     struct mps_ext_cfg_page_req *ext_page_req, void *buf)
346 {
347 	MPI2_CONFIG_EXTENDED_PAGE_HEADER *reqhdr, *hdr;
348 	struct mps_config_params params;
349 	int error;
350 
351 	reqhdr = buf;
352 	hdr = &params.hdr.Ext;
353 	params.action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT;
354 	params.page_address = le32toh(ext_page_req->page_address);
355 	hdr->PageVersion = reqhdr->PageVersion;
356 	hdr->PageType = MPI2_CONFIG_PAGETYPE_EXTENDED;
357 	hdr->PageNumber = reqhdr->PageNumber;
358 	hdr->ExtPageType = reqhdr->ExtPageType;
359 	hdr->ExtPageLength = reqhdr->ExtPageLength;
360 	params.buffer = buf;
361 	params.length = le32toh(ext_page_req->len);
362 	params.callback = NULL;
363 
364 	if ((error = mps_read_config_page(sc, &params)) != 0) {
365 		mps_printf(sc, "mps_user_read_extcfg_page timed out\n");
366 		return (ETIMEDOUT);
367 	}
368 
369 	ext_page_req->ioc_status = htole16(params.status);
370 	return (0);
371 }
372 
373 static int
374 mps_user_write_cfg_page(struct mps_softc *sc,
375     struct mps_cfg_page_req *page_req, void *buf)
376 {
377 	MPI2_CONFIG_PAGE_HEADER *reqhdr, *hdr;
378 	struct mps_config_params params;
379 	u_int	      hdr_attr;
380 	int	      error;
381 
382 	reqhdr = buf;
383 	hdr = &params.hdr.Struct;
384 	hdr_attr = reqhdr->PageType & MPI2_CONFIG_PAGEATTR_MASK;
385 	if (hdr_attr != MPI2_CONFIG_PAGEATTR_CHANGEABLE &&
386 	    hdr_attr != MPI2_CONFIG_PAGEATTR_PERSISTENT) {
387 		mps_printf(sc, "page type 0x%x not changeable\n",
388 			reqhdr->PageType & MPI2_CONFIG_PAGETYPE_MASK);
389 		return (EINVAL);
390 	}
391 
392 	/*
393 	 * There isn't any point in restoring stripped out attributes
394 	 * if you then mask them going down to issue the request.
395 	 */
396 
397 	hdr->PageVersion = reqhdr->PageVersion;
398 	hdr->PageLength = reqhdr->PageLength;
399 	hdr->PageNumber = reqhdr->PageNumber;
400 	hdr->PageType = reqhdr->PageType;
401 	params.action = MPI2_CONFIG_ACTION_PAGE_WRITE_CURRENT;
402 	params.page_address = le32toh(page_req->page_address);
403 	params.buffer = buf;
404 	params.length = le32toh(page_req->len);
405 	params.callback = NULL;
406 
407 	if ((error = mps_write_config_page(sc, &params)) != 0) {
408 		mps_printf(sc, "mps_write_cfg_page timed out\n");
409 		return (ETIMEDOUT);
410 	}
411 
412 	page_req->ioc_status = htole16(params.status);
413 	return (0);
414 }
415 
416 void
417 mpi_init_sge(struct mps_command *cm, void *req, void *sge)
418 {
419 	int off, space;
420 
421 	space = (int)cm->cm_sc->reqframesz;
422 	off = (uintptr_t)sge - (uintptr_t)req;
423 
424 	KASSERT(off < space, ("bad pointers %p %p, off %d, space %d",
425             req, sge, off, space));
426 
427 	cm->cm_sge = sge;
428 	cm->cm_sglsize = space - off;
429 }
430 
431 /*
432  * Prepare the mps_command for an IOC_FACTS request.
433  */
434 static int
435 mpi_pre_ioc_facts(struct mps_command *cm, struct mps_usr_command *cmd)
436 {
437 	MPI2_IOC_FACTS_REQUEST *req = (void *)cm->cm_req;
438 	MPI2_IOC_FACTS_REPLY *rpl;
439 
440 	if (cmd->req_len != sizeof *req)
441 		return (EINVAL);
442 	if (cmd->rpl_len != sizeof *rpl)
443 		return (EINVAL);
444 
445 	cm->cm_sge = NULL;
446 	cm->cm_sglsize = 0;
447 	return (0);
448 }
449 
450 /*
451  * Prepare the mps_command for a PORT_FACTS request.
452  */
453 static int
454 mpi_pre_port_facts(struct mps_command *cm, struct mps_usr_command *cmd)
455 {
456 	MPI2_PORT_FACTS_REQUEST *req = (void *)cm->cm_req;
457 	MPI2_PORT_FACTS_REPLY *rpl;
458 
459 	if (cmd->req_len != sizeof *req)
460 		return (EINVAL);
461 	if (cmd->rpl_len != sizeof *rpl)
462 		return (EINVAL);
463 
464 	cm->cm_sge = NULL;
465 	cm->cm_sglsize = 0;
466 	return (0);
467 }
468 
469 /*
470  * Prepare the mps_command for a FW_DOWNLOAD request.
471  */
472 static int
473 mpi_pre_fw_download(struct mps_command *cm, struct mps_usr_command *cmd)
474 {
475 	MPI2_FW_DOWNLOAD_REQUEST *req = (void *)cm->cm_req;
476 	MPI2_FW_DOWNLOAD_REPLY *rpl;
477 	MPI2_FW_DOWNLOAD_TCSGE tc;
478 	int error;
479 
480 	/*
481 	 * This code assumes there is room in the request's SGL for
482 	 * the TransactionContext plus at least a SGL chain element.
483 	 */
484 	CTASSERT(sizeof req->SGL >= sizeof tc + MPS_SGC_SIZE);
485 
486 	if (cmd->req_len != sizeof *req)
487 		return (EINVAL);
488 	if (cmd->rpl_len != sizeof *rpl)
489 		return (EINVAL);
490 
491 	if (cmd->len == 0)
492 		return (EINVAL);
493 
494 	error = copyin(cmd->buf, cm->cm_data, cmd->len);
495 	if (error != 0)
496 		return (error);
497 
498 	mpi_init_sge(cm, req, &req->SGL);
499 	bzero(&tc, sizeof tc);
500 
501 	/*
502 	 * For now, the F/W image must be provided in a single request.
503 	 */
504 	if ((req->MsgFlags & MPI2_FW_DOWNLOAD_MSGFLGS_LAST_SEGMENT) == 0)
505 		return (EINVAL);
506 	if (req->TotalImageSize != cmd->len)
507 		return (EINVAL);
508 
509 	/*
510 	 * The value of the first two elements is specified in the
511 	 * Fusion-MPT Message Passing Interface document.
512 	 */
513 	tc.ContextSize = 0;
514 	tc.DetailsLength = 12;
515 	tc.ImageOffset = 0;
516 	tc.ImageSize = cmd->len;
517 
518 	cm->cm_flags |= MPS_CM_FLAGS_DATAOUT;
519 
520 	return (mps_push_sge(cm, &tc, sizeof tc, 0));
521 }
522 
523 /*
524  * Prepare the mps_command for a FW_UPLOAD request.
525  */
526 static int
527 mpi_pre_fw_upload(struct mps_command *cm, struct mps_usr_command *cmd)
528 {
529 	MPI2_FW_UPLOAD_REQUEST *req = (void *)cm->cm_req;
530 	MPI2_FW_UPLOAD_REPLY *rpl;
531 	MPI2_FW_UPLOAD_TCSGE tc;
532 
533 	/*
534 	 * This code assumes there is room in the request's SGL for
535 	 * the TransactionContext plus at least a SGL chain element.
536 	 */
537 	CTASSERT(sizeof req->SGL >= sizeof tc + MPS_SGC_SIZE);
538 
539 	if (cmd->req_len != sizeof *req)
540 		return (EINVAL);
541 	if (cmd->rpl_len != sizeof *rpl)
542 		return (EINVAL);
543 
544 	mpi_init_sge(cm, req, &req->SGL);
545 	bzero(&tc, sizeof tc);
546 
547 	/*
548 	 * The value of the first two elements is specified in the
549 	 * Fusion-MPT Message Passing Interface document.
550 	 */
551 	tc.ContextSize = 0;
552 	tc.DetailsLength = 12;
553 	/*
554 	 * XXX Is there any reason to fetch a partial image?  I.e. to
555 	 * set ImageOffset to something other than 0?
556 	 */
557 	tc.ImageOffset = 0;
558 	tc.ImageSize = cmd->len;
559 
560 	cm->cm_flags |= MPS_CM_FLAGS_DATAIN;
561 
562 	return (mps_push_sge(cm, &tc, sizeof tc, 0));
563 }
564 
565 /*
566  * Prepare the mps_command for a SATA_PASSTHROUGH request.
567  */
568 static int
569 mpi_pre_sata_passthrough(struct mps_command *cm, struct mps_usr_command *cmd)
570 {
571 	MPI2_SATA_PASSTHROUGH_REQUEST *req = (void *)cm->cm_req;
572 	MPI2_SATA_PASSTHROUGH_REPLY *rpl;
573 
574 	if (cmd->req_len != sizeof *req)
575 		return (EINVAL);
576 	if (cmd->rpl_len != sizeof *rpl)
577 		return (EINVAL);
578 
579 	mpi_init_sge(cm, req, &req->SGL);
580 	return (0);
581 }
582 
583 /*
584  * Prepare the mps_command for a SMP_PASSTHROUGH request.
585  */
586 static int
587 mpi_pre_smp_passthrough(struct mps_command *cm, struct mps_usr_command *cmd)
588 {
589 	MPI2_SMP_PASSTHROUGH_REQUEST *req = (void *)cm->cm_req;
590 	MPI2_SMP_PASSTHROUGH_REPLY *rpl;
591 
592 	if (cmd->req_len != sizeof *req)
593 		return (EINVAL);
594 	if (cmd->rpl_len != sizeof *rpl)
595 		return (EINVAL);
596 
597 	mpi_init_sge(cm, req, &req->SGL);
598 	return (0);
599 }
600 
601 /*
602  * Prepare the mps_command for a CONFIG request.
603  */
604 static int
605 mpi_pre_config(struct mps_command *cm, struct mps_usr_command *cmd)
606 {
607 	MPI2_CONFIG_REQUEST *req = (void *)cm->cm_req;
608 	MPI2_CONFIG_REPLY *rpl;
609 
610 	if (cmd->req_len != sizeof *req)
611 		return (EINVAL);
612 	if (cmd->rpl_len != sizeof *rpl)
613 		return (EINVAL);
614 
615 	mpi_init_sge(cm, req, &req->PageBufferSGE);
616 	return (0);
617 }
618 
619 /*
620  * Prepare the mps_command for a SAS_IO_UNIT_CONTROL request.
621  */
622 static int
623 mpi_pre_sas_io_unit_control(struct mps_command *cm,
624 			     struct mps_usr_command *cmd)
625 {
626 
627 	cm->cm_sge = NULL;
628 	cm->cm_sglsize = 0;
629 	return (0);
630 }
631 
632 /*
633  * A set of functions to prepare an mps_command for the various
634  * supported requests.
635  */
636 struct mps_user_func {
637 	U8		Function;
638 	mps_user_f	*f_pre;
639 } mps_user_func_list[] = {
640 	{ MPI2_FUNCTION_IOC_FACTS,		mpi_pre_ioc_facts },
641 	{ MPI2_FUNCTION_PORT_FACTS,		mpi_pre_port_facts },
642 	{ MPI2_FUNCTION_FW_DOWNLOAD, 		mpi_pre_fw_download },
643 	{ MPI2_FUNCTION_FW_UPLOAD,		mpi_pre_fw_upload },
644 	{ MPI2_FUNCTION_SATA_PASSTHROUGH,	mpi_pre_sata_passthrough },
645 	{ MPI2_FUNCTION_SMP_PASSTHROUGH,	mpi_pre_smp_passthrough},
646 	{ MPI2_FUNCTION_CONFIG,			mpi_pre_config},
647 	{ MPI2_FUNCTION_SAS_IO_UNIT_CONTROL,	mpi_pre_sas_io_unit_control },
648 	{ 0xFF,					NULL } /* list end */
649 };
650 
651 static int
652 mps_user_setup_request(struct mps_command *cm, struct mps_usr_command *cmd)
653 {
654 	MPI2_REQUEST_HEADER *hdr = (MPI2_REQUEST_HEADER *)cm->cm_req;
655 	struct mps_user_func *f;
656 
657 	for (f = mps_user_func_list; f->f_pre != NULL; f++) {
658 		if (hdr->Function == f->Function)
659 			return (f->f_pre(cm, cmd));
660 	}
661 	return (EINVAL);
662 }
663 
664 static int
665 mps_user_command(struct mps_softc *sc, struct mps_usr_command *cmd)
666 {
667 	MPI2_REQUEST_HEADER *hdr;
668 	MPI2_DEFAULT_REPLY *rpl;
669 	void *buf = NULL;
670 	struct mps_command *cm = NULL;
671 	int err = 0;
672 	int sz;
673 
674 	mps_lock(sc);
675 	cm = mps_alloc_command(sc);
676 
677 	if (cm == NULL) {
678 		mps_printf(sc, "%s: no mps requests\n", __func__);
679 		err = ENOMEM;
680 		goto RetFree;
681 	}
682 	mps_unlock(sc);
683 
684 	hdr = (MPI2_REQUEST_HEADER *)cm->cm_req;
685 
686 	mps_dprint(sc, MPS_USER, "%s: req %p %d  rpl %p %d\n", __func__,
687 	    cmd->req, cmd->req_len, cmd->rpl, cmd->rpl_len);
688 
689 	if (cmd->req_len > (int)sc->reqframesz) {
690 		err = EINVAL;
691 		goto RetFreeUnlocked;
692 	}
693 	err = copyin(cmd->req, hdr, cmd->req_len);
694 	if (err != 0)
695 		goto RetFreeUnlocked;
696 
697 	mps_dprint(sc, MPS_USER, "%s: Function %02X MsgFlags %02X\n", __func__,
698 	    hdr->Function, hdr->MsgFlags);
699 
700 	if (cmd->len > 0) {
701 		buf = malloc(cmd->len, M_MPSUSER, M_WAITOK|M_ZERO);
702 		cm->cm_data = buf;
703 		cm->cm_length = cmd->len;
704 	} else {
705 		cm->cm_data = NULL;
706 		cm->cm_length = 0;
707 	}
708 
709 	cm->cm_flags = MPS_CM_FLAGS_SGE_SIMPLE;
710 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
711 
712 	err = mps_user_setup_request(cm, cmd);
713 	if (err == EINVAL) {
714 		mps_printf(sc, "%s: unsupported parameter or unsupported "
715 		    "function in request (function = 0x%X)\n", __func__,
716 		    hdr->Function);
717 	}
718 	if (err != 0)
719 		goto RetFreeUnlocked;
720 
721 	mps_lock(sc);
722 	err = mps_wait_command(sc, &cm, 60, CAN_SLEEP);
723 
724 	if (err || (cm == NULL)) {
725 		mps_printf(sc, "%s: invalid request: error %d\n",
726 		    __func__, err);
727 		goto RetFree;
728 	}
729 
730 	rpl = (MPI2_DEFAULT_REPLY *)cm->cm_reply;
731 	if (rpl != NULL)
732 		sz = rpl->MsgLength * 4;
733 	else
734 		sz = 0;
735 
736 	if (sz > cmd->rpl_len) {
737 		mps_printf(sc, "%s: user reply buffer (%d) smaller than "
738 		    "returned buffer (%d)\n", __func__, cmd->rpl_len, sz);
739 		sz = cmd->rpl_len;
740 	}
741 
742 	mps_unlock(sc);
743 	copyout(rpl, cmd->rpl, sz);
744 	if (buf != NULL)
745 		copyout(buf, cmd->buf, cmd->len);
746 	mps_dprint(sc, MPS_USER, "%s: reply size %d\n", __func__, sz);
747 
748 RetFreeUnlocked:
749 	mps_lock(sc);
750 RetFree:
751 	if (cm != NULL)
752 		mps_free_command(sc, cm);
753 	mps_unlock(sc);
754 	if (buf != NULL)
755 		free(buf, M_MPSUSER);
756 	return (err);
757 }
758 
759 static int
760 mps_user_pass_thru(struct mps_softc *sc, mps_pass_thru_t *data)
761 {
762 	MPI2_REQUEST_HEADER	*hdr, tmphdr;
763 	MPI2_DEFAULT_REPLY	*rpl = NULL;
764 	struct mps_command	*cm = NULL;
765 	int			err = 0, dir = 0, sz;
766 	uint8_t			function = 0;
767 	u_int			sense_len;
768 	struct mpssas_target	*targ = NULL;
769 
770 	/*
771 	 * Only allow one passthru command at a time.  Use the MPS_FLAGS_BUSY
772 	 * bit to denote that a passthru is being processed.
773 	 */
774 	mps_lock(sc);
775 	if (sc->mps_flags & MPS_FLAGS_BUSY) {
776 		mps_dprint(sc, MPS_USER, "%s: Only one passthru command "
777 		    "allowed at a single time.", __func__);
778 		mps_unlock(sc);
779 		return (EBUSY);
780 	}
781 	sc->mps_flags |= MPS_FLAGS_BUSY;
782 	mps_unlock(sc);
783 
784 	/*
785 	 * Do some validation on data direction.  Valid cases are:
786 	 *    1) DataSize is 0 and direction is NONE
787 	 *    2) DataSize is non-zero and one of:
788 	 *        a) direction is READ or
789 	 *        b) direction is WRITE or
790 	 *        c) direction is BOTH and DataOutSize is non-zero
791 	 * If valid and the direction is BOTH, change the direction to READ.
792 	 * if valid and the direction is not BOTH, make sure DataOutSize is 0.
793 	 */
794 	if (((data->DataSize == 0) &&
795 	    (data->DataDirection == MPS_PASS_THRU_DIRECTION_NONE)) ||
796 	    ((data->DataSize != 0) &&
797 	    ((data->DataDirection == MPS_PASS_THRU_DIRECTION_READ) ||
798 	    (data->DataDirection == MPS_PASS_THRU_DIRECTION_WRITE) ||
799 	    ((data->DataDirection == MPS_PASS_THRU_DIRECTION_BOTH) &&
800 	    (data->DataOutSize != 0))))) {
801 		if (data->DataDirection == MPS_PASS_THRU_DIRECTION_BOTH)
802 			data->DataDirection = MPS_PASS_THRU_DIRECTION_READ;
803 		else
804 			data->DataOutSize = 0;
805 	} else {
806 		err = EINVAL;
807 		goto RetFreeUnlocked;
808 	}
809 
810 	mps_dprint(sc, MPS_USER, "%s: req 0x%jx %d  rpl 0x%jx %d "
811 	    "data in 0x%jx %d data out 0x%jx %d data dir %d\n", __func__,
812 	    data->PtrRequest, data->RequestSize, data->PtrReply,
813 	    data->ReplySize, data->PtrData, data->DataSize,
814 	    data->PtrDataOut, data->DataOutSize, data->DataDirection);
815 
816 	/*
817 	 * copy in the header so we know what we're dealing with before we
818 	 * commit to allocating a command for it.
819 	 */
820 	err = copyin(PTRIN(data->PtrRequest), &tmphdr, data->RequestSize);
821 	if (err != 0)
822 		goto RetFreeUnlocked;
823 
824 	if (data->RequestSize > (int)sc->reqframesz) {
825 		err = EINVAL;
826 		goto RetFreeUnlocked;
827 	}
828 
829 	function = tmphdr.Function;
830 	mps_dprint(sc, MPS_USER, "%s: Function %02X MsgFlags %02X\n", __func__,
831 	    function, tmphdr.MsgFlags);
832 
833 	/*
834 	 * Handle a passthru TM request.
835 	 */
836 	if (function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
837 		MPI2_SCSI_TASK_MANAGE_REQUEST	*task;
838 
839 		mps_lock(sc);
840 		cm = mpssas_alloc_tm(sc);
841 		if (cm == NULL) {
842 			err = EINVAL;
843 			goto Ret;
844 		}
845 
846 		/* Copy the header in.  Only a small fixup is needed. */
847 		task = (MPI2_SCSI_TASK_MANAGE_REQUEST *)cm->cm_req;
848 		bcopy(&tmphdr, task, data->RequestSize);
849 		task->TaskMID = cm->cm_desc.Default.SMID;
850 
851 		cm->cm_data = NULL;
852 		cm->cm_complete = NULL;
853 		cm->cm_complete_data = NULL;
854 
855 		targ = mpssas_find_target_by_handle(sc->sassc, 0,
856 		    task->DevHandle);
857 		if (targ == NULL) {
858 			mps_dprint(sc, MPS_INFO,
859 			   "%s %d : invalid handle for requested TM 0x%x \n",
860 			   __func__, __LINE__, task->DevHandle);
861 			err = 1;
862 		} else {
863 			mpssas_prepare_for_tm(sc, cm, targ, CAM_LUN_WILDCARD);
864 			err = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
865 		}
866 
867 		if (err != 0) {
868 			err = EIO;
869 			mps_dprint(sc, MPS_FAULT, "%s: task management failed",
870 			    __func__);
871 		}
872 		/*
873 		 * Copy the reply data and sense data to user space.
874 		 */
875 		if ((cm != NULL) && (cm->cm_reply != NULL)) {
876 			rpl = (MPI2_DEFAULT_REPLY *)cm->cm_reply;
877 			sz = rpl->MsgLength * 4;
878 
879 			if (sz > data->ReplySize) {
880 				mps_printf(sc, "%s: user reply buffer (%d) "
881 				    "smaller than returned buffer (%d)\n",
882 				    __func__, data->ReplySize, sz);
883 			}
884 			mps_unlock(sc);
885 			copyout(cm->cm_reply, PTRIN(data->PtrReply),
886 			    data->ReplySize);
887 			mps_lock(sc);
888 		}
889 		mpssas_free_tm(sc, cm);
890 		goto Ret;
891 	}
892 
893 	mps_lock(sc);
894 	cm = mps_alloc_command(sc);
895 
896 	if (cm == NULL) {
897 		mps_printf(sc, "%s: no mps requests\n", __func__);
898 		err = ENOMEM;
899 		goto Ret;
900 	}
901 	mps_unlock(sc);
902 
903 	hdr = (MPI2_REQUEST_HEADER *)cm->cm_req;
904 	bcopy(&tmphdr, hdr, data->RequestSize);
905 
906 	/*
907 	 * Do some checking to make sure the IOCTL request contains a valid
908 	 * request.  Then set the SGL info.
909 	 */
910 	mpi_init_sge(cm, hdr, (void *)((uint8_t *)hdr + data->RequestSize));
911 
912 	/*
913 	 * Set up for read, write or both.  From check above, DataOutSize will
914 	 * be 0 if direction is READ or WRITE, but it will have some non-zero
915 	 * value if the direction is BOTH.  So, just use the biggest size to get
916 	 * the cm_data buffer size.  If direction is BOTH, 2 SGLs need to be set
917 	 * up; the first is for the request and the second will contain the
918 	 * response data. cm_out_len needs to be set here and this will be used
919 	 * when the SGLs are set up.
920 	 */
921 	cm->cm_data = NULL;
922 	cm->cm_length = MAX(data->DataSize, data->DataOutSize);
923 	cm->cm_out_len = data->DataOutSize;
924 	cm->cm_flags = 0;
925 	if (cm->cm_length != 0) {
926 		cm->cm_data = malloc(cm->cm_length, M_MPSUSER, M_WAITOK |
927 		    M_ZERO);
928 		cm->cm_flags = MPS_CM_FLAGS_DATAIN;
929 		if (data->DataOutSize) {
930 			cm->cm_flags |= MPS_CM_FLAGS_DATAOUT;
931 			err = copyin(PTRIN(data->PtrDataOut),
932 			    cm->cm_data, data->DataOutSize);
933 		} else if (data->DataDirection ==
934 		    MPS_PASS_THRU_DIRECTION_WRITE) {
935 			cm->cm_flags = MPS_CM_FLAGS_DATAOUT;
936 			err = copyin(PTRIN(data->PtrData),
937 			    cm->cm_data, data->DataSize);
938 		}
939 		if (err != 0)
940 			mps_dprint(sc, MPS_FAULT, "%s: failed to copy "
941 			    "IOCTL data from user space\n", __func__);
942 	}
943 	cm->cm_flags |= MPS_CM_FLAGS_SGE_SIMPLE;
944 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
945 
946 	/*
947 	 * Set up Sense buffer and SGL offset for IO passthru.  SCSI IO request
948 	 * uses SCSI IO descriptor.
949 	 */
950 	if ((function == MPI2_FUNCTION_SCSI_IO_REQUEST) ||
951 	    (function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
952 		MPI2_SCSI_IO_REQUEST	*scsi_io_req;
953 
954 		scsi_io_req = (MPI2_SCSI_IO_REQUEST *)hdr;
955 		/*
956 		 * Put SGE for data and data_out buffer at the end of
957 		 * scsi_io_request message header (64 bytes in total).
958 		 * Following above SGEs, the residual space will be used by
959 		 * sense data.
960 		 */
961 		scsi_io_req->SenseBufferLength = (uint8_t)(data->RequestSize -
962 		    64);
963 		scsi_io_req->SenseBufferLowAddress = htole32(cm->cm_sense_busaddr);
964 
965 		/*
966 		 * Set SGLOffset0 value.  This is the number of dwords that SGL
967 		 * is offset from the beginning of MPI2_SCSI_IO_REQUEST struct.
968 		 */
969 		scsi_io_req->SGLOffset0 = 24;
970 
971 		/*
972 		 * Setup descriptor info.  RAID passthrough must use the
973 		 * default request descriptor which is already set, so if this
974 		 * is a SCSI IO request, change the descriptor to SCSI IO.
975 		 * Also, if this is a SCSI IO request, handle the reply in the
976 		 * mpssas_scsio_complete function.
977 		 */
978 		if (function == MPI2_FUNCTION_SCSI_IO_REQUEST) {
979 			cm->cm_desc.SCSIIO.RequestFlags =
980 			    MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
981 			cm->cm_desc.SCSIIO.DevHandle = scsi_io_req->DevHandle;
982 
983 			/*
984 			 * Make sure the DevHandle is not 0 because this is a
985 			 * likely error.
986 			 */
987 			if (scsi_io_req->DevHandle == 0) {
988 				err = EINVAL;
989 				goto RetFreeUnlocked;
990 			}
991 		}
992 	}
993 
994 	mps_lock(sc);
995 
996 	err = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
997 
998 	if (err || (cm == NULL)) {
999 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
1000 		    err);
1001 		mps_unlock(sc);
1002 		goto RetFreeUnlocked;
1003 	}
1004 
1005 	/*
1006 	 * Sync the DMA data, if any.  Then copy the data to user space.
1007 	 */
1008 	if (cm->cm_data != NULL) {
1009 		if (cm->cm_flags & MPS_CM_FLAGS_DATAIN)
1010 			dir = BUS_DMASYNC_POSTREAD;
1011 		else if (cm->cm_flags & MPS_CM_FLAGS_DATAOUT)
1012 			dir = BUS_DMASYNC_POSTWRITE;
1013 		bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, dir);
1014 		bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap);
1015 
1016 		if (cm->cm_flags & MPS_CM_FLAGS_DATAIN) {
1017 			mps_unlock(sc);
1018 			err = copyout(cm->cm_data,
1019 			    PTRIN(data->PtrData), data->DataSize);
1020 			mps_lock(sc);
1021 			if (err != 0)
1022 				mps_dprint(sc, MPS_FAULT, "%s: failed to copy "
1023 				    "IOCTL data to user space\n", __func__);
1024 		}
1025 	}
1026 
1027 	/*
1028 	 * Copy the reply data and sense data to user space.
1029 	 */
1030 	if (cm->cm_reply != NULL) {
1031 		rpl = (MPI2_DEFAULT_REPLY *)cm->cm_reply;
1032 		sz = rpl->MsgLength * 4;
1033 
1034 		if (sz > data->ReplySize) {
1035 			mps_printf(sc, "%s: user reply buffer (%d) smaller "
1036 			    "than returned buffer (%d)\n", __func__,
1037 			    data->ReplySize, sz);
1038 		}
1039 		mps_unlock(sc);
1040 		copyout(cm->cm_reply, PTRIN(data->PtrReply), data->ReplySize);
1041 		mps_lock(sc);
1042 
1043 		if ((function == MPI2_FUNCTION_SCSI_IO_REQUEST) ||
1044 		    (function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
1045 			if (((MPI2_SCSI_IO_REPLY *)rpl)->SCSIState &
1046 			    MPI2_SCSI_STATE_AUTOSENSE_VALID) {
1047 				sense_len =
1048 				    MIN((le32toh(((MPI2_SCSI_IO_REPLY *)rpl)->
1049 				    SenseCount)), sizeof(struct
1050 				    scsi_sense_data));
1051 				mps_unlock(sc);
1052 				copyout(cm->cm_sense, (PTRIN(data->PtrReply +
1053 				    sizeof(MPI2_SCSI_IO_REPLY))), sense_len);
1054 				mps_lock(sc);
1055 			}
1056 		}
1057 	}
1058 	mps_unlock(sc);
1059 
1060 RetFreeUnlocked:
1061 	mps_lock(sc);
1062 
1063 	if (cm != NULL) {
1064 		if (cm->cm_data)
1065 			free(cm->cm_data, M_MPSUSER);
1066 		mps_free_command(sc, cm);
1067 	}
1068 Ret:
1069 	sc->mps_flags &= ~MPS_FLAGS_BUSY;
1070 	mps_unlock(sc);
1071 
1072 	return (err);
1073 }
1074 
1075 static void
1076 mps_user_get_adapter_data(struct mps_softc *sc, mps_adapter_data_t *data)
1077 {
1078 	Mpi2ConfigReply_t	mpi_reply;
1079 	Mpi2BiosPage3_t		config_page;
1080 
1081 	/*
1082 	 * Use the PCI interface functions to get the Bus, Device, and Function
1083 	 * information.
1084 	 */
1085 	data->PciInformation.u.bits.BusNumber = pci_get_bus(sc->mps_dev);
1086 	data->PciInformation.u.bits.DeviceNumber = pci_get_slot(sc->mps_dev);
1087 	data->PciInformation.u.bits.FunctionNumber =
1088 	    pci_get_function(sc->mps_dev);
1089 
1090 	/*
1091 	 * Get the FW version that should already be saved in IOC Facts.
1092 	 */
1093 	data->MpiFirmwareVersion = sc->facts->FWVersion.Word;
1094 
1095 	/*
1096 	 * General device info.
1097 	 */
1098 	data->AdapterType = MPSIOCTL_ADAPTER_TYPE_SAS2;
1099 	if (sc->mps_flags & MPS_FLAGS_WD_AVAILABLE)
1100 		data->AdapterType = MPSIOCTL_ADAPTER_TYPE_SAS2_SSS6200;
1101 	data->PCIDeviceHwId = pci_get_device(sc->mps_dev);
1102 	data->PCIDeviceHwRev = pci_read_config(sc->mps_dev, PCIR_REVID, 1);
1103 	data->SubSystemId = pci_get_subdevice(sc->mps_dev);
1104 	data->SubsystemVendorId = pci_get_subvendor(sc->mps_dev);
1105 
1106 	/*
1107 	 * Get the driver version.
1108 	 */
1109 	strcpy((char *)&data->DriverVersion[0], MPS_DRIVER_VERSION);
1110 
1111 	/*
1112 	 * Need to get BIOS Config Page 3 for the BIOS Version.
1113 	 */
1114 	data->BiosVersion = 0;
1115 	mps_lock(sc);
1116 	if (mps_config_get_bios_pg3(sc, &mpi_reply, &config_page))
1117 		printf("%s: Error while retrieving BIOS Version\n", __func__);
1118 	else
1119 		data->BiosVersion = config_page.BiosVersion;
1120 	mps_unlock(sc);
1121 }
1122 
1123 static void
1124 mps_user_read_pci_info(struct mps_softc *sc, mps_pci_info_t *data)
1125 {
1126 	int	i;
1127 
1128 	/*
1129 	 * Use the PCI interface functions to get the Bus, Device, and Function
1130 	 * information.
1131 	 */
1132 	data->BusNumber = pci_get_bus(sc->mps_dev);
1133 	data->DeviceNumber = pci_get_slot(sc->mps_dev);
1134 	data->FunctionNumber = pci_get_function(sc->mps_dev);
1135 
1136 	/*
1137 	 * Now get the interrupt vector and the pci header.  The vector can
1138 	 * only be 0 right now.  The header is the first 256 bytes of config
1139 	 * space.
1140 	 */
1141 	data->InterruptVector = 0;
1142 	for (i = 0; i < sizeof (data->PciHeader); i++) {
1143 		data->PciHeader[i] = pci_read_config(sc->mps_dev, i, 1);
1144 	}
1145 }
1146 
1147 static uint8_t
1148 mps_get_fw_diag_buffer_number(struct mps_softc *sc, uint32_t unique_id)
1149 {
1150 	uint8_t	index;
1151 
1152 	for (index = 0; index < MPI2_DIAG_BUF_TYPE_COUNT; index++) {
1153 		if (sc->fw_diag_buffer_list[index].unique_id == unique_id) {
1154 			return (index);
1155 		}
1156 	}
1157 
1158 	return (MPS_FW_DIAGNOSTIC_UID_NOT_FOUND);
1159 }
1160 
1161 static int
1162 mps_post_fw_diag_buffer(struct mps_softc *sc,
1163     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code)
1164 {
1165 	MPI2_DIAG_BUFFER_POST_REQUEST	*req;
1166 	MPI2_DIAG_BUFFER_POST_REPLY	*reply = NULL;
1167 	struct mps_command		*cm = NULL;
1168 	int				i, status;
1169 
1170 	/*
1171 	 * If buffer is not enabled, just leave.
1172 	 */
1173 	*return_code = MPS_FW_DIAG_ERROR_POST_FAILED;
1174 	if (!pBuffer->enabled) {
1175 		return (MPS_DIAG_FAILURE);
1176 	}
1177 
1178 	/*
1179 	 * Clear some flags initially.
1180 	 */
1181 	pBuffer->force_release = FALSE;
1182 	pBuffer->valid_data = FALSE;
1183 	pBuffer->owned_by_firmware = FALSE;
1184 
1185 	/*
1186 	 * Get a command.
1187 	 */
1188 	cm = mps_alloc_command(sc);
1189 	if (cm == NULL) {
1190 		mps_printf(sc, "%s: no mps requests\n", __func__);
1191 		return (MPS_DIAG_FAILURE);
1192 	}
1193 
1194 	/*
1195 	 * Build the request for releasing the FW Diag Buffer and send it.
1196 	 */
1197 	req = (MPI2_DIAG_BUFFER_POST_REQUEST *)cm->cm_req;
1198 	req->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1199 	req->BufferType = pBuffer->buffer_type;
1200 	req->ExtendedType = pBuffer->extended_type;
1201 	req->BufferLength = pBuffer->size;
1202 	for (i = 0; i < (sizeof(req->ProductSpecific) / 4); i++)
1203 		req->ProductSpecific[i] = pBuffer->product_specific[i];
1204 	mps_from_u64(sc->fw_diag_busaddr, &req->BufferAddress);
1205 	cm->cm_data = NULL;
1206 	cm->cm_length = 0;
1207 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1208 	cm->cm_complete_data = NULL;
1209 
1210 	/*
1211 	 * Send command synchronously.
1212 	 */
1213 	status = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
1214 	if (status || (cm == NULL)) {
1215 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
1216 		    status);
1217 		status = MPS_DIAG_FAILURE;
1218 		goto done;
1219 	}
1220 
1221 	/*
1222 	 * Process POST reply.
1223 	 */
1224 	reply = (MPI2_DIAG_BUFFER_POST_REPLY *)cm->cm_reply;
1225 	if (reply == NULL) {
1226 		mps_printf(sc, "%s: reply is NULL, probably due to "
1227 		    "reinitialization\n", __func__);
1228 		status = MPS_DIAG_FAILURE;
1229 		goto done;
1230 	}
1231 	if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
1232 	    MPI2_IOCSTATUS_SUCCESS) {
1233 		status = MPS_DIAG_FAILURE;
1234 		mps_dprint(sc, MPS_FAULT, "%s: post of FW  Diag Buffer failed "
1235 		    "with IOCStatus = 0x%x, IOCLogInfo = 0x%x and "
1236 		    "TransferLength = 0x%x\n", __func__,
1237 		    le16toh(reply->IOCStatus), le32toh(reply->IOCLogInfo),
1238 		    le32toh(reply->TransferLength));
1239 		goto done;
1240 	}
1241 
1242 	/*
1243 	 * Post was successful.
1244 	 */
1245 	pBuffer->valid_data = TRUE;
1246 	pBuffer->owned_by_firmware = TRUE;
1247 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1248 	status = MPS_DIAG_SUCCESS;
1249 
1250 done:
1251 	if (cm != NULL)
1252 		mps_free_command(sc, cm);
1253 	return (status);
1254 }
1255 
1256 static int
1257 mps_release_fw_diag_buffer(struct mps_softc *sc,
1258     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code,
1259     uint32_t diag_type)
1260 {
1261 	MPI2_DIAG_RELEASE_REQUEST	*req;
1262 	MPI2_DIAG_RELEASE_REPLY		*reply = NULL;
1263 	struct mps_command		*cm = NULL;
1264 	int				status;
1265 
1266 	/*
1267 	 * If buffer is not enabled, just leave.
1268 	 */
1269 	*return_code = MPS_FW_DIAG_ERROR_RELEASE_FAILED;
1270 	if (!pBuffer->enabled) {
1271 		mps_dprint(sc, MPS_USER, "%s: This buffer type is not "
1272 		    "supported by the IOC", __func__);
1273 		return (MPS_DIAG_FAILURE);
1274 	}
1275 
1276 	/*
1277 	 * Clear some flags initially.
1278 	 */
1279 	pBuffer->force_release = FALSE;
1280 	pBuffer->valid_data = FALSE;
1281 	pBuffer->owned_by_firmware = FALSE;
1282 
1283 	/*
1284 	 * Get a command.
1285 	 */
1286 	cm = mps_alloc_command(sc);
1287 	if (cm == NULL) {
1288 		mps_printf(sc, "%s: no mps requests\n", __func__);
1289 		return (MPS_DIAG_FAILURE);
1290 	}
1291 
1292 	/*
1293 	 * Build the request for releasing the FW Diag Buffer and send it.
1294 	 */
1295 	req = (MPI2_DIAG_RELEASE_REQUEST *)cm->cm_req;
1296 	req->Function = MPI2_FUNCTION_DIAG_RELEASE;
1297 	req->BufferType = pBuffer->buffer_type;
1298 	cm->cm_data = NULL;
1299 	cm->cm_length = 0;
1300 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1301 	cm->cm_complete_data = NULL;
1302 
1303 	/*
1304 	 * Send command synchronously.
1305 	 */
1306 	status = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
1307 	if (status || (cm == NULL)) {
1308 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
1309 		    status);
1310 		status = MPS_DIAG_FAILURE;
1311 		goto done;
1312 	}
1313 
1314 	/*
1315 	 * Process RELEASE reply.
1316 	 */
1317 	reply = (MPI2_DIAG_RELEASE_REPLY *)cm->cm_reply;
1318 	if (reply == NULL) {
1319 		mps_printf(sc, "%s: reply is NULL, probably due to "
1320 		    "reinitialization\n", __func__);
1321 		status = MPS_DIAG_FAILURE;
1322 		goto done;
1323 	}
1324 	if (((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
1325 	    MPI2_IOCSTATUS_SUCCESS) || pBuffer->owned_by_firmware) {
1326 		status = MPS_DIAG_FAILURE;
1327 		mps_dprint(sc, MPS_FAULT, "%s: release of FW Diag Buffer "
1328 		    "failed with IOCStatus = 0x%x and IOCLogInfo = 0x%x\n",
1329 		    __func__, le16toh(reply->IOCStatus),
1330 		    le32toh(reply->IOCLogInfo));
1331 		goto done;
1332 	}
1333 
1334 	/*
1335 	 * Release was successful.
1336 	 */
1337 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1338 	status = MPS_DIAG_SUCCESS;
1339 
1340 	/*
1341 	 * If this was for an UNREGISTER diag type command, clear the unique ID.
1342 	 */
1343 	if (diag_type == MPS_FW_DIAG_TYPE_UNREGISTER) {
1344 		pBuffer->unique_id = MPS_FW_DIAG_INVALID_UID;
1345 	}
1346 
1347 done:
1348 	if (cm != NULL)
1349 		mps_free_command(sc, cm);
1350 
1351 	return (status);
1352 }
1353 
1354 static int
1355 mps_diag_register(struct mps_softc *sc, mps_fw_diag_register_t *diag_register,
1356     uint32_t *return_code)
1357 {
1358 	mps_fw_diagnostic_buffer_t	*pBuffer;
1359 	struct mps_busdma_context	*ctx;
1360 	uint8_t				extended_type, buffer_type, i;
1361 	uint32_t			buffer_size;
1362 	uint32_t			unique_id;
1363 	int				status;
1364 	int				error;
1365 
1366 	extended_type = diag_register->ExtendedType;
1367 	buffer_type = diag_register->BufferType;
1368 	buffer_size = diag_register->RequestedBufferSize;
1369 	unique_id = diag_register->UniqueId;
1370 	ctx = NULL;
1371 	error = 0;
1372 
1373 	/*
1374 	 * Check for valid buffer type
1375 	 */
1376 	if (buffer_type >= MPI2_DIAG_BUF_TYPE_COUNT) {
1377 		*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1378 		return (MPS_DIAG_FAILURE);
1379 	}
1380 
1381 	/*
1382 	 * Get the current buffer and look up the unique ID.  The unique ID
1383 	 * should not be found.  If it is, the ID is already in use.
1384 	 */
1385 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1386 	pBuffer = &sc->fw_diag_buffer_list[buffer_type];
1387 	if (i != MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1388 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1389 		return (MPS_DIAG_FAILURE);
1390 	}
1391 
1392 	/*
1393 	 * The buffer's unique ID should not be registered yet, and the given
1394 	 * unique ID cannot be 0.
1395 	 */
1396 	if ((pBuffer->unique_id != MPS_FW_DIAG_INVALID_UID) ||
1397 	    (unique_id == MPS_FW_DIAG_INVALID_UID)) {
1398 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1399 		return (MPS_DIAG_FAILURE);
1400 	}
1401 
1402 	/*
1403 	 * If this buffer is already posted as immediate, just change owner.
1404 	 */
1405 	if (pBuffer->immediate && pBuffer->owned_by_firmware &&
1406 	    (pBuffer->unique_id == MPS_FW_DIAG_INVALID_UID)) {
1407 		pBuffer->immediate = FALSE;
1408 		pBuffer->unique_id = unique_id;
1409 		return (MPS_DIAG_SUCCESS);
1410 	}
1411 
1412 	/*
1413 	 * Post a new buffer after checking if it's enabled.  The DMA buffer
1414 	 * that is allocated will be contiguous (nsegments = 1).
1415 	 */
1416 	if (!pBuffer->enabled) {
1417 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1418 		return (MPS_DIAG_FAILURE);
1419 	}
1420 	if (bus_dma_tag_create( sc->mps_parent_dmat,    /* parent */
1421 				1, 0,			/* algnmnt, boundary */
1422 				BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
1423 				BUS_SPACE_MAXADDR,	/* highaddr */
1424 				NULL, NULL,		/* filter, filterarg */
1425                                 buffer_size,		/* maxsize */
1426                                 1,			/* nsegments */
1427                                 buffer_size,		/* maxsegsize */
1428                                 0,			/* flags */
1429                                 NULL, NULL,		/* lockfunc, lockarg */
1430                                 &sc->fw_diag_dmat)) {
1431 		mps_dprint(sc, MPS_ERROR,
1432 		    "Cannot allocate FW diag buffer DMA tag\n");
1433 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1434 		status = MPS_DIAG_FAILURE;
1435 		goto bailout;
1436 	}
1437 	if (bus_dmamem_alloc(sc->fw_diag_dmat, (void **)&sc->fw_diag_buffer,
1438 	    BUS_DMA_NOWAIT, &sc->fw_diag_map)) {
1439 		mps_dprint(sc, MPS_ERROR,
1440 		    "Cannot allocate FW diag buffer memory\n");
1441 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1442 		status = MPS_DIAG_FAILURE;
1443 		goto bailout;
1444         }
1445         bzero(sc->fw_diag_buffer, buffer_size);
1446 
1447 	ctx = malloc(sizeof(*ctx), M_MPSUSER, M_WAITOK | M_ZERO);
1448 	if (ctx == NULL) {
1449 		device_printf(sc->mps_dev, "%s: context malloc failed\n",
1450 		    __func__);
1451 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1452 		status = MPS_DIAG_FAILURE;
1453 		goto bailout;
1454 	}
1455 	ctx->addr = &sc->fw_diag_busaddr;
1456 	ctx->buffer_dmat = sc->fw_diag_dmat;
1457 	ctx->buffer_dmamap = sc->fw_diag_map;
1458 	ctx->softc = sc;
1459         error = bus_dmamap_load(sc->fw_diag_dmat, sc->fw_diag_map,
1460 	    sc->fw_diag_buffer, buffer_size, mps_memaddr_wait_cb,
1461 	    ctx, 0);
1462 
1463 	if (error == EINPROGRESS) {
1464 
1465 		/* XXX KDM */
1466 		device_printf(sc->mps_dev, "%s: Deferred bus_dmamap_load\n",
1467 		    __func__);
1468 		/*
1469 		 * Wait for the load to complete.  If we're interrupted,
1470 		 * bail out.
1471 		 */
1472 		mps_lock(sc);
1473 		if (ctx->completed == 0) {
1474 			error = msleep(ctx, &sc->mps_mtx, PCATCH, "mpswait", 0);
1475 			if (error != 0) {
1476 				/*
1477 				 * We got an error from msleep(9).  This is
1478 				 * most likely due to a signal.  Tell
1479 				 * mpr_memaddr_wait_cb() that we've abandoned
1480 				 * the context, so it needs to clean up when
1481 				 * it is called.
1482 				 */
1483 				ctx->abandoned = 1;
1484 
1485 				/* The callback will free this memory */
1486 				ctx = NULL;
1487 				mps_unlock(sc);
1488 
1489 				device_printf(sc->mps_dev, "Cannot "
1490 				    "bus_dmamap_load FW diag buffer, error = "
1491 				    "%d returned from msleep\n", error);
1492 				*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1493 				status = MPS_DIAG_FAILURE;
1494 				goto bailout;
1495 			}
1496 		}
1497 		mps_unlock(sc);
1498 	}
1499 
1500 	if ((error != 0) || (ctx->error != 0)) {
1501 		device_printf(sc->mps_dev, "Cannot bus_dmamap_load FW diag "
1502 		    "buffer, %serror = %d\n", error ? "" : "callback ",
1503 		    error ? error : ctx->error);
1504 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1505 		status = MPS_DIAG_FAILURE;
1506 		goto bailout;
1507 	}
1508 
1509 	bus_dmamap_sync(sc->fw_diag_dmat, sc->fw_diag_map, BUS_DMASYNC_PREREAD);
1510 
1511 	pBuffer->size = buffer_size;
1512 
1513 	/*
1514 	 * Copy the given info to the diag buffer and post the buffer.
1515 	 */
1516 	pBuffer->buffer_type = buffer_type;
1517 	pBuffer->immediate = FALSE;
1518 	if (buffer_type == MPI2_DIAG_BUF_TYPE_TRACE) {
1519 		for (i = 0; i < (sizeof (pBuffer->product_specific) / 4);
1520 		    i++) {
1521 			pBuffer->product_specific[i] =
1522 			    diag_register->ProductSpecific[i];
1523 		}
1524 	}
1525 	pBuffer->extended_type = extended_type;
1526 	pBuffer->unique_id = unique_id;
1527 	status = mps_post_fw_diag_buffer(sc, pBuffer, return_code);
1528 
1529 bailout:
1530 	/*
1531 	 * In case there was a failure, free the DMA buffer.
1532 	 */
1533 	if (status == MPS_DIAG_FAILURE) {
1534 		if (sc->fw_diag_busaddr != 0) {
1535 			bus_dmamap_unload(sc->fw_diag_dmat, sc->fw_diag_map);
1536 			sc->fw_diag_busaddr = 0;
1537 		}
1538 		if (sc->fw_diag_buffer != NULL) {
1539 			bus_dmamem_free(sc->fw_diag_dmat, sc->fw_diag_buffer,
1540 			    sc->fw_diag_map);
1541 			sc->fw_diag_buffer = NULL;
1542 		}
1543 		if (sc->fw_diag_dmat != NULL) {
1544 			bus_dma_tag_destroy(sc->fw_diag_dmat);
1545 			sc->fw_diag_dmat = NULL;
1546 		}
1547 	}
1548 
1549 	if (ctx != NULL)
1550 		free(ctx, M_MPSUSER);
1551 
1552 	return (status);
1553 }
1554 
1555 static int
1556 mps_diag_unregister(struct mps_softc *sc,
1557     mps_fw_diag_unregister_t *diag_unregister, uint32_t *return_code)
1558 {
1559 	mps_fw_diagnostic_buffer_t	*pBuffer;
1560 	uint8_t				i;
1561 	uint32_t			unique_id;
1562 	int				status;
1563 
1564 	unique_id = diag_unregister->UniqueId;
1565 
1566 	/*
1567 	 * Get the current buffer and look up the unique ID.  The unique ID
1568 	 * should be there.
1569 	 */
1570 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1571 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1572 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1573 		return (MPS_DIAG_FAILURE);
1574 	}
1575 
1576 	pBuffer = &sc->fw_diag_buffer_list[i];
1577 
1578 	/*
1579 	 * Try to release the buffer from FW before freeing it.  If release
1580 	 * fails, don't free the DMA buffer in case FW tries to access it
1581 	 * later.  If buffer is not owned by firmware, can't release it.
1582 	 */
1583 	if (!pBuffer->owned_by_firmware) {
1584 		status = MPS_DIAG_SUCCESS;
1585 	} else {
1586 		status = mps_release_fw_diag_buffer(sc, pBuffer, return_code,
1587 		    MPS_FW_DIAG_TYPE_UNREGISTER);
1588 	}
1589 
1590 	/*
1591 	 * At this point, return the current status no matter what happens with
1592 	 * the DMA buffer.
1593 	 */
1594 	pBuffer->unique_id = MPS_FW_DIAG_INVALID_UID;
1595 	if (status == MPS_DIAG_SUCCESS) {
1596 		if (sc->fw_diag_busaddr != 0) {
1597 			bus_dmamap_unload(sc->fw_diag_dmat, sc->fw_diag_map);
1598 			sc->fw_diag_busaddr = 0;
1599 		}
1600 		if (sc->fw_diag_buffer != NULL) {
1601 			bus_dmamem_free(sc->fw_diag_dmat, sc->fw_diag_buffer,
1602 			    sc->fw_diag_map);
1603 			sc->fw_diag_buffer = NULL;
1604 		}
1605 		if (sc->fw_diag_dmat != NULL) {
1606 			bus_dma_tag_destroy(sc->fw_diag_dmat);
1607 			sc->fw_diag_dmat = NULL;
1608 		}
1609 	}
1610 
1611 	return (status);
1612 }
1613 
1614 static int
1615 mps_diag_query(struct mps_softc *sc, mps_fw_diag_query_t *diag_query,
1616     uint32_t *return_code)
1617 {
1618 	mps_fw_diagnostic_buffer_t	*pBuffer;
1619 	uint8_t				i;
1620 	uint32_t			unique_id;
1621 
1622 	unique_id = diag_query->UniqueId;
1623 
1624 	/*
1625 	 * If ID is valid, query on ID.
1626 	 * If ID is invalid, query on buffer type.
1627 	 */
1628 	if (unique_id == MPS_FW_DIAG_INVALID_UID) {
1629 		i = diag_query->BufferType;
1630 		if (i >= MPI2_DIAG_BUF_TYPE_COUNT) {
1631 			*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1632 			return (MPS_DIAG_FAILURE);
1633 		}
1634 	} else {
1635 		i = mps_get_fw_diag_buffer_number(sc, unique_id);
1636 		if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1637 			*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1638 			return (MPS_DIAG_FAILURE);
1639 		}
1640 	}
1641 
1642 	/*
1643 	 * Fill query structure with the diag buffer info.
1644 	 */
1645 	pBuffer = &sc->fw_diag_buffer_list[i];
1646 	diag_query->BufferType = pBuffer->buffer_type;
1647 	diag_query->ExtendedType = pBuffer->extended_type;
1648 	if (diag_query->BufferType == MPI2_DIAG_BUF_TYPE_TRACE) {
1649 		for (i = 0; i < (sizeof(diag_query->ProductSpecific) / 4);
1650 		    i++) {
1651 			diag_query->ProductSpecific[i] =
1652 			    pBuffer->product_specific[i];
1653 		}
1654 	}
1655 	diag_query->TotalBufferSize = pBuffer->size;
1656 	diag_query->DriverAddedBufferSize = 0;
1657 	diag_query->UniqueId = pBuffer->unique_id;
1658 	diag_query->ApplicationFlags = 0;
1659 	diag_query->DiagnosticFlags = 0;
1660 
1661 	/*
1662 	 * Set/Clear application flags
1663 	 */
1664 	if (pBuffer->immediate) {
1665 		diag_query->ApplicationFlags &= ~MPS_FW_DIAG_FLAG_APP_OWNED;
1666 	} else {
1667 		diag_query->ApplicationFlags |= MPS_FW_DIAG_FLAG_APP_OWNED;
1668 	}
1669 	if (pBuffer->valid_data || pBuffer->owned_by_firmware) {
1670 		diag_query->ApplicationFlags |= MPS_FW_DIAG_FLAG_BUFFER_VALID;
1671 	} else {
1672 		diag_query->ApplicationFlags &= ~MPS_FW_DIAG_FLAG_BUFFER_VALID;
1673 	}
1674 	if (pBuffer->owned_by_firmware) {
1675 		diag_query->ApplicationFlags |=
1676 		    MPS_FW_DIAG_FLAG_FW_BUFFER_ACCESS;
1677 	} else {
1678 		diag_query->ApplicationFlags &=
1679 		    ~MPS_FW_DIAG_FLAG_FW_BUFFER_ACCESS;
1680 	}
1681 
1682 	return (MPS_DIAG_SUCCESS);
1683 }
1684 
1685 static int
1686 mps_diag_read_buffer(struct mps_softc *sc,
1687     mps_diag_read_buffer_t *diag_read_buffer, uint8_t *ioctl_buf,
1688     uint32_t *return_code)
1689 {
1690 	mps_fw_diagnostic_buffer_t	*pBuffer;
1691 	uint8_t				i, *pData;
1692 	uint32_t			unique_id;
1693 	int				status;
1694 
1695 	unique_id = diag_read_buffer->UniqueId;
1696 
1697 	/*
1698 	 * Get the current buffer and look up the unique ID.  The unique ID
1699 	 * should be there.
1700 	 */
1701 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1702 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1703 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1704 		return (MPS_DIAG_FAILURE);
1705 	}
1706 
1707 	pBuffer = &sc->fw_diag_buffer_list[i];
1708 
1709 	/*
1710 	 * Make sure requested read is within limits
1711 	 */
1712 	if (diag_read_buffer->StartingOffset + diag_read_buffer->BytesToRead >
1713 	    pBuffer->size) {
1714 		*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1715 		return (MPS_DIAG_FAILURE);
1716 	}
1717 
1718 	/* Sync the DMA map before we copy to userland. */
1719 	bus_dmamap_sync(sc->fw_diag_dmat, sc->fw_diag_map,
1720 	    BUS_DMASYNC_POSTREAD);
1721 
1722 	/*
1723 	 * Copy the requested data from DMA to the diag_read_buffer.  The DMA
1724 	 * buffer that was allocated is one contiguous buffer.
1725 	 */
1726 	pData = (uint8_t *)(sc->fw_diag_buffer +
1727 	    diag_read_buffer->StartingOffset);
1728 	if (copyout(pData, ioctl_buf, diag_read_buffer->BytesToRead) != 0)
1729 		return (MPS_DIAG_FAILURE);
1730 	diag_read_buffer->Status = 0;
1731 
1732 	/*
1733 	 * Set or clear the Force Release flag.
1734 	 */
1735 	if (pBuffer->force_release) {
1736 		diag_read_buffer->Flags |= MPS_FW_DIAG_FLAG_FORCE_RELEASE;
1737 	} else {
1738 		diag_read_buffer->Flags &= ~MPS_FW_DIAG_FLAG_FORCE_RELEASE;
1739 	}
1740 
1741 	/*
1742 	 * If buffer is to be reregistered, make sure it's not already owned by
1743 	 * firmware first.
1744 	 */
1745 	status = MPS_DIAG_SUCCESS;
1746 	if (!pBuffer->owned_by_firmware) {
1747 		if (diag_read_buffer->Flags & MPS_FW_DIAG_FLAG_REREGISTER) {
1748 			status = mps_post_fw_diag_buffer(sc, pBuffer,
1749 			    return_code);
1750 		}
1751 	}
1752 
1753 	return (status);
1754 }
1755 
1756 static int
1757 mps_diag_release(struct mps_softc *sc, mps_fw_diag_release_t *diag_release,
1758     uint32_t *return_code)
1759 {
1760 	mps_fw_diagnostic_buffer_t	*pBuffer;
1761 	uint8_t				i;
1762 	uint32_t			unique_id;
1763 	int				status;
1764 
1765 	unique_id = diag_release->UniqueId;
1766 
1767 	/*
1768 	 * Get the current buffer and look up the unique ID.  The unique ID
1769 	 * should be there.
1770 	 */
1771 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1772 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1773 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1774 		return (MPS_DIAG_FAILURE);
1775 	}
1776 
1777 	pBuffer = &sc->fw_diag_buffer_list[i];
1778 
1779 	/*
1780 	 * If buffer is not owned by firmware, it's already been released.
1781 	 */
1782 	if (!pBuffer->owned_by_firmware) {
1783 		*return_code = MPS_FW_DIAG_ERROR_ALREADY_RELEASED;
1784 		return (MPS_DIAG_FAILURE);
1785 	}
1786 
1787 	/*
1788 	 * Release the buffer.
1789 	 */
1790 	status = mps_release_fw_diag_buffer(sc, pBuffer, return_code,
1791 	    MPS_FW_DIAG_TYPE_RELEASE);
1792 	return (status);
1793 }
1794 
1795 static int
1796 mps_do_diag_action(struct mps_softc *sc, uint32_t action, uint8_t *diag_action,
1797     uint32_t length, uint32_t *return_code)
1798 {
1799 	mps_fw_diag_register_t		diag_register;
1800 	mps_fw_diag_unregister_t	diag_unregister;
1801 	mps_fw_diag_query_t		diag_query;
1802 	mps_diag_read_buffer_t		diag_read_buffer;
1803 	mps_fw_diag_release_t		diag_release;
1804 	int				status = MPS_DIAG_SUCCESS;
1805 	uint32_t			original_return_code;
1806 
1807 	original_return_code = *return_code;
1808 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1809 
1810 	switch (action) {
1811 		case MPS_FW_DIAG_TYPE_REGISTER:
1812 			if (!length) {
1813 				*return_code =
1814 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1815 				status = MPS_DIAG_FAILURE;
1816 				break;
1817 			}
1818 			if (copyin(diag_action, &diag_register,
1819 			    sizeof(diag_register)) != 0)
1820 				return (MPS_DIAG_FAILURE);
1821 			status = mps_diag_register(sc, &diag_register,
1822 			    return_code);
1823 			break;
1824 
1825 		case MPS_FW_DIAG_TYPE_UNREGISTER:
1826 			if (length < sizeof(diag_unregister)) {
1827 				*return_code =
1828 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1829 				status = MPS_DIAG_FAILURE;
1830 				break;
1831 			}
1832 			if (copyin(diag_action, &diag_unregister,
1833 			    sizeof(diag_unregister)) != 0)
1834 				return (MPS_DIAG_FAILURE);
1835 			status = mps_diag_unregister(sc, &diag_unregister,
1836 			    return_code);
1837 			break;
1838 
1839 		case MPS_FW_DIAG_TYPE_QUERY:
1840 			if (length < sizeof (diag_query)) {
1841 				*return_code =
1842 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1843 				status = MPS_DIAG_FAILURE;
1844 				break;
1845 			}
1846 			if (copyin(diag_action, &diag_query, sizeof(diag_query))
1847 			    != 0)
1848 				return (MPS_DIAG_FAILURE);
1849 			status = mps_diag_query(sc, &diag_query, return_code);
1850 			if (status == MPS_DIAG_SUCCESS)
1851 				if (copyout(&diag_query, diag_action,
1852 				    sizeof (diag_query)) != 0)
1853 					return (MPS_DIAG_FAILURE);
1854 			break;
1855 
1856 		case MPS_FW_DIAG_TYPE_READ_BUFFER:
1857 			if (copyin(diag_action, &diag_read_buffer,
1858 			    sizeof(diag_read_buffer)) != 0)
1859 				return (MPS_DIAG_FAILURE);
1860 			if (length < diag_read_buffer.BytesToRead) {
1861 				*return_code =
1862 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1863 				status = MPS_DIAG_FAILURE;
1864 				break;
1865 			}
1866 			status = mps_diag_read_buffer(sc, &diag_read_buffer,
1867 			    PTRIN(diag_read_buffer.PtrDataBuffer),
1868 			    return_code);
1869 			if (status == MPS_DIAG_SUCCESS) {
1870 				if (copyout(&diag_read_buffer, diag_action,
1871 				    sizeof(diag_read_buffer) -
1872 				    sizeof(diag_read_buffer.PtrDataBuffer)) !=
1873 				    0)
1874 					return (MPS_DIAG_FAILURE);
1875 			}
1876 			break;
1877 
1878 		case MPS_FW_DIAG_TYPE_RELEASE:
1879 			if (length < sizeof(diag_release)) {
1880 				*return_code =
1881 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1882 				status = MPS_DIAG_FAILURE;
1883 				break;
1884 			}
1885 			if (copyin(diag_action, &diag_release,
1886 			    sizeof(diag_release)) != 0)
1887 				return (MPS_DIAG_FAILURE);
1888 			status = mps_diag_release(sc, &diag_release,
1889 			    return_code);
1890 			break;
1891 
1892 		default:
1893 			*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1894 			status = MPS_DIAG_FAILURE;
1895 			break;
1896 	}
1897 
1898 	if ((status == MPS_DIAG_FAILURE) &&
1899 	    (original_return_code == MPS_FW_DIAG_NEW) &&
1900 	    (*return_code != MPS_FW_DIAG_ERROR_SUCCESS))
1901 		status = MPS_DIAG_SUCCESS;
1902 
1903 	return (status);
1904 }
1905 
1906 static int
1907 mps_user_diag_action(struct mps_softc *sc, mps_diag_action_t *data)
1908 {
1909 	int			status;
1910 
1911 	/*
1912 	 * Only allow one diag action at one time.
1913 	 */
1914 	if (sc->mps_flags & MPS_FLAGS_BUSY) {
1915 		mps_dprint(sc, MPS_USER, "%s: Only one FW diag command "
1916 		    "allowed at a single time.", __func__);
1917 		return (EBUSY);
1918 	}
1919 	sc->mps_flags |= MPS_FLAGS_BUSY;
1920 
1921 	/*
1922 	 * Send diag action request
1923 	 */
1924 	if (data->Action == MPS_FW_DIAG_TYPE_REGISTER ||
1925 	    data->Action == MPS_FW_DIAG_TYPE_UNREGISTER ||
1926 	    data->Action == MPS_FW_DIAG_TYPE_QUERY ||
1927 	    data->Action == MPS_FW_DIAG_TYPE_READ_BUFFER ||
1928 	    data->Action == MPS_FW_DIAG_TYPE_RELEASE) {
1929 		status = mps_do_diag_action(sc, data->Action,
1930 		    PTRIN(data->PtrDiagAction), data->Length,
1931 		    &data->ReturnCode);
1932 	} else
1933 		status = EINVAL;
1934 
1935 	sc->mps_flags &= ~MPS_FLAGS_BUSY;
1936 	return (status);
1937 }
1938 
1939 /*
1940  * Copy the event recording mask and the event queue size out.  For
1941  * clarification, the event recording mask (events_to_record) is not the same
1942  * thing as the event mask (event_mask).  events_to_record has a bit set for
1943  * every event type that is to be recorded by the driver, and event_mask has a
1944  * bit cleared for every event that is allowed into the driver from the IOC.
1945  * They really have nothing to do with each other.
1946  */
1947 static void
1948 mps_user_event_query(struct mps_softc *sc, mps_event_query_t *data)
1949 {
1950 	uint8_t	i;
1951 
1952 	mps_lock(sc);
1953 	data->Entries = MPS_EVENT_QUEUE_SIZE;
1954 
1955 	for (i = 0; i < 4; i++) {
1956 		data->Types[i] = sc->events_to_record[i];
1957 	}
1958 	mps_unlock(sc);
1959 }
1960 
1961 /*
1962  * Set the driver's event mask according to what's been given.  See
1963  * mps_user_event_query for explanation of the event recording mask and the IOC
1964  * event mask.  It's the app's responsibility to enable event logging by setting
1965  * the bits in events_to_record.  Initially, no events will be logged.
1966  */
1967 static void
1968 mps_user_event_enable(struct mps_softc *sc, mps_event_enable_t *data)
1969 {
1970 	uint8_t	i;
1971 
1972 	mps_lock(sc);
1973 	for (i = 0; i < 4; i++) {
1974 		sc->events_to_record[i] = data->Types[i];
1975 	}
1976 	mps_unlock(sc);
1977 }
1978 
1979 /*
1980  * Copy out the events that have been recorded, up to the max events allowed.
1981  */
1982 static int
1983 mps_user_event_report(struct mps_softc *sc, mps_event_report_t *data)
1984 {
1985 	int		status = 0;
1986 	uint32_t	size;
1987 
1988 	mps_lock(sc);
1989 	size = data->Size;
1990 	if ((size >= sizeof(sc->recorded_events)) && (status == 0)) {
1991 		mps_unlock(sc);
1992 		if (copyout((void *)sc->recorded_events,
1993 		    PTRIN(data->PtrEvents), size) != 0)
1994 			status = EFAULT;
1995 		mps_lock(sc);
1996 	} else {
1997 		/*
1998 		 * data->Size value is not large enough to copy event data.
1999 		 */
2000 		status = EFAULT;
2001 	}
2002 
2003 	/*
2004 	 * Change size value to match the number of bytes that were copied.
2005 	 */
2006 	if (status == 0)
2007 		data->Size = sizeof(sc->recorded_events);
2008 	mps_unlock(sc);
2009 
2010 	return (status);
2011 }
2012 
2013 /*
2014  * Record events into the driver from the IOC if they are not masked.
2015  */
2016 void
2017 mpssas_record_event(struct mps_softc *sc,
2018     MPI2_EVENT_NOTIFICATION_REPLY *event_reply)
2019 {
2020 	uint32_t	event;
2021 	int		i, j;
2022 	uint16_t	event_data_len;
2023 	boolean_t	sendAEN = FALSE;
2024 
2025 	event = event_reply->Event;
2026 
2027 	/*
2028 	 * Generate a system event to let anyone who cares know that a
2029 	 * LOG_ENTRY_ADDED event has occurred.  This is sent no matter what the
2030 	 * event mask is set to.
2031 	 */
2032 	if (event == MPI2_EVENT_LOG_ENTRY_ADDED) {
2033 		sendAEN = TRUE;
2034 	}
2035 
2036 	/*
2037 	 * Record the event only if its corresponding bit is set in
2038 	 * events_to_record.  event_index is the index into recorded_events and
2039 	 * event_number is the overall number of an event being recorded since
2040 	 * start-of-day.  event_index will roll over; event_number will never
2041 	 * roll over.
2042 	 */
2043 	i = (uint8_t)(event / 32);
2044 	j = (uint8_t)(event % 32);
2045 	if ((i < 4) && ((1 << j) & sc->events_to_record[i])) {
2046 		i = sc->event_index;
2047 		sc->recorded_events[i].Type = event;
2048 		sc->recorded_events[i].Number = ++sc->event_number;
2049 		bzero(sc->recorded_events[i].Data, MPS_MAX_EVENT_DATA_LENGTH *
2050 		    4);
2051 		event_data_len = event_reply->EventDataLength;
2052 
2053 		if (event_data_len > 0) {
2054 			/*
2055 			 * Limit data to size in m_event entry
2056 			 */
2057 			if (event_data_len > MPS_MAX_EVENT_DATA_LENGTH) {
2058 				event_data_len = MPS_MAX_EVENT_DATA_LENGTH;
2059 			}
2060 			for (j = 0; j < event_data_len; j++) {
2061 				sc->recorded_events[i].Data[j] =
2062 				    event_reply->EventData[j];
2063 			}
2064 
2065 			/*
2066 			 * check for index wrap-around
2067 			 */
2068 			if (++i == MPS_EVENT_QUEUE_SIZE) {
2069 				i = 0;
2070 			}
2071 			sc->event_index = (uint8_t)i;
2072 
2073 			/*
2074 			 * Set flag to send the event.
2075 			 */
2076 			sendAEN = TRUE;
2077 		}
2078 	}
2079 
2080 	/*
2081 	 * Generate a system event if flag is set to let anyone who cares know
2082 	 * that an event has occurred.
2083 	 */
2084 	if (sendAEN) {
2085 //SLM-how to send a system event (see kqueue, kevent)
2086 //		(void) ddi_log_sysevent(mpt->m_dip, DDI_VENDOR_LSI, "MPT_SAS",
2087 //		    "SAS", NULL, NULL, DDI_NOSLEEP);
2088 	}
2089 }
2090 
2091 static int
2092 mps_user_reg_access(struct mps_softc *sc, mps_reg_access_t *data)
2093 {
2094 	int	status = 0;
2095 
2096 	switch (data->Command) {
2097 		/*
2098 		 * IO access is not supported.
2099 		 */
2100 		case REG_IO_READ:
2101 		case REG_IO_WRITE:
2102 			mps_dprint(sc, MPS_USER, "IO access is not supported. "
2103 			    "Use memory access.");
2104 			status = EINVAL;
2105 			break;
2106 
2107 		case REG_MEM_READ:
2108 			data->RegData = mps_regread(sc, data->RegOffset);
2109 			break;
2110 
2111 		case REG_MEM_WRITE:
2112 			mps_regwrite(sc, data->RegOffset, data->RegData);
2113 			break;
2114 
2115 		default:
2116 			status = EINVAL;
2117 			break;
2118 	}
2119 
2120 	return (status);
2121 }
2122 
2123 static int
2124 mps_user_btdh(struct mps_softc *sc, mps_btdh_mapping_t *data)
2125 {
2126 	uint8_t		bt2dh = FALSE;
2127 	uint8_t		dh2bt = FALSE;
2128 	uint16_t	dev_handle, bus, target;
2129 
2130 	bus = data->Bus;
2131 	target = data->TargetID;
2132 	dev_handle = data->DevHandle;
2133 
2134 	/*
2135 	 * When DevHandle is 0xFFFF and Bus/Target are not 0xFFFF, use Bus/
2136 	 * Target to get DevHandle.  When Bus/Target are 0xFFFF and DevHandle is
2137 	 * not 0xFFFF, use DevHandle to get Bus/Target.  Anything else is
2138 	 * invalid.
2139 	 */
2140 	if ((bus == 0xFFFF) && (target == 0xFFFF) && (dev_handle != 0xFFFF))
2141 		dh2bt = TRUE;
2142 	if ((dev_handle == 0xFFFF) && (bus != 0xFFFF) && (target != 0xFFFF))
2143 		bt2dh = TRUE;
2144 	if (!dh2bt && !bt2dh)
2145 		return (EINVAL);
2146 
2147 	/*
2148 	 * Only handle bus of 0.  Make sure target is within range.
2149 	 */
2150 	if (bt2dh) {
2151 		if (bus != 0)
2152 			return (EINVAL);
2153 
2154 		if (target > sc->max_devices) {
2155 			mps_dprint(sc, MPS_FAULT, "Target ID is out of range "
2156 			   "for Bus/Target to DevHandle mapping.");
2157 			return (EINVAL);
2158 		}
2159 		dev_handle = sc->mapping_table[target].dev_handle;
2160 		if (dev_handle)
2161 			data->DevHandle = dev_handle;
2162 	} else {
2163 		bus = 0;
2164 		target = mps_mapping_get_tid_from_handle(sc, dev_handle);
2165 		data->Bus = bus;
2166 		data->TargetID = target;
2167 	}
2168 
2169 	return (0);
2170 }
2171 
2172 static int
2173 mps_ioctl(struct cdev *dev, u_long cmd, void *arg, int flag,
2174     struct thread *td)
2175 {
2176 	struct mps_softc *sc;
2177 	struct mps_cfg_page_req *page_req;
2178 	struct mps_ext_cfg_page_req *ext_page_req;
2179 	void *mps_page;
2180 	int error, msleep_ret;
2181 
2182 	mps_page = NULL;
2183 	sc = dev->si_drv1;
2184 	page_req = (void *)arg;
2185 	ext_page_req = (void *)arg;
2186 
2187 	switch (cmd) {
2188 	case MPSIO_READ_CFG_HEADER:
2189 		mps_lock(sc);
2190 		error = mps_user_read_cfg_header(sc, page_req);
2191 		mps_unlock(sc);
2192 		break;
2193 	case MPSIO_READ_CFG_PAGE:
2194 		mps_page = malloc(page_req->len, M_MPSUSER, M_WAITOK | M_ZERO);
2195 		error = copyin(page_req->buf, mps_page,
2196 		    sizeof(MPI2_CONFIG_PAGE_HEADER));
2197 		if (error)
2198 			break;
2199 		mps_lock(sc);
2200 		error = mps_user_read_cfg_page(sc, page_req, mps_page);
2201 		mps_unlock(sc);
2202 		if (error)
2203 			break;
2204 		error = copyout(mps_page, page_req->buf, page_req->len);
2205 		break;
2206 	case MPSIO_READ_EXT_CFG_HEADER:
2207 		mps_lock(sc);
2208 		error = mps_user_read_extcfg_header(sc, ext_page_req);
2209 		mps_unlock(sc);
2210 		break;
2211 	case MPSIO_READ_EXT_CFG_PAGE:
2212 		mps_page = malloc(ext_page_req->len, M_MPSUSER, M_WAITOK|M_ZERO);
2213 		error = copyin(ext_page_req->buf, mps_page,
2214 		    sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER));
2215 		if (error)
2216 			break;
2217 		mps_lock(sc);
2218 		error = mps_user_read_extcfg_page(sc, ext_page_req, mps_page);
2219 		mps_unlock(sc);
2220 		if (error)
2221 			break;
2222 		error = copyout(mps_page, ext_page_req->buf, ext_page_req->len);
2223 		break;
2224 	case MPSIO_WRITE_CFG_PAGE:
2225 		mps_page = malloc(page_req->len, M_MPSUSER, M_WAITOK|M_ZERO);
2226 		error = copyin(page_req->buf, mps_page, page_req->len);
2227 		if (error)
2228 			break;
2229 		mps_lock(sc);
2230 		error = mps_user_write_cfg_page(sc, page_req, mps_page);
2231 		mps_unlock(sc);
2232 		break;
2233 	case MPSIO_MPS_COMMAND:
2234 		error = mps_user_command(sc, (struct mps_usr_command *)arg);
2235 		break;
2236 	case MPTIOCTL_PASS_THRU:
2237 		/*
2238 		 * The user has requested to pass through a command to be
2239 		 * executed by the MPT firmware.  Call our routine which does
2240 		 * this.  Only allow one passthru IOCTL at one time.
2241 		 */
2242 		error = mps_user_pass_thru(sc, (mps_pass_thru_t *)arg);
2243 		break;
2244 	case MPTIOCTL_GET_ADAPTER_DATA:
2245 		/*
2246 		 * The user has requested to read adapter data.  Call our
2247 		 * routine which does this.
2248 		 */
2249 		error = 0;
2250 		mps_user_get_adapter_data(sc, (mps_adapter_data_t *)arg);
2251 		break;
2252 	case MPTIOCTL_GET_PCI_INFO:
2253 		/*
2254 		 * The user has requested to read pci info.  Call
2255 		 * our routine which does this.
2256 		 */
2257 		mps_lock(sc);
2258 		error = 0;
2259 		mps_user_read_pci_info(sc, (mps_pci_info_t *)arg);
2260 		mps_unlock(sc);
2261 		break;
2262 	case MPTIOCTL_RESET_ADAPTER:
2263 		mps_lock(sc);
2264 		sc->port_enable_complete = 0;
2265 		uint32_t reinit_start = time_uptime;
2266 		error = mps_reinit(sc);
2267 		/* Sleep for 300 second. */
2268 		msleep_ret = msleep(&sc->port_enable_complete, &sc->mps_mtx, PRIBIO,
2269 		       "mps_porten", 300 * hz);
2270 		mps_unlock(sc);
2271 		if (msleep_ret)
2272 			printf("Port Enable did not complete after Diag "
2273 			    "Reset msleep error %d.\n", msleep_ret);
2274 		else
2275 			mps_dprint(sc, MPS_USER,
2276 				"Hard Reset with Port Enable completed in %d seconds.\n",
2277 				 (uint32_t) (time_uptime - reinit_start));
2278 		break;
2279 	case MPTIOCTL_DIAG_ACTION:
2280 		/*
2281 		 * The user has done a diag buffer action.  Call our routine
2282 		 * which does this.  Only allow one diag action at one time.
2283 		 */
2284 		mps_lock(sc);
2285 		error = mps_user_diag_action(sc, (mps_diag_action_t *)arg);
2286 		mps_unlock(sc);
2287 		break;
2288 	case MPTIOCTL_EVENT_QUERY:
2289 		/*
2290 		 * The user has done an event query. Call our routine which does
2291 		 * this.
2292 		 */
2293 		error = 0;
2294 		mps_user_event_query(sc, (mps_event_query_t *)arg);
2295 		break;
2296 	case MPTIOCTL_EVENT_ENABLE:
2297 		/*
2298 		 * The user has done an event enable. Call our routine which
2299 		 * does this.
2300 		 */
2301 		error = 0;
2302 		mps_user_event_enable(sc, (mps_event_enable_t *)arg);
2303 		break;
2304 	case MPTIOCTL_EVENT_REPORT:
2305 		/*
2306 		 * The user has done an event report. Call our routine which
2307 		 * does this.
2308 		 */
2309 		error = mps_user_event_report(sc, (mps_event_report_t *)arg);
2310 		break;
2311 	case MPTIOCTL_REG_ACCESS:
2312 		/*
2313 		 * The user has requested register access.  Call our routine
2314 		 * which does this.
2315 		 */
2316 		mps_lock(sc);
2317 		error = mps_user_reg_access(sc, (mps_reg_access_t *)arg);
2318 		mps_unlock(sc);
2319 		break;
2320 	case MPTIOCTL_BTDH_MAPPING:
2321 		/*
2322 		 * The user has requested to translate a bus/target to a
2323 		 * DevHandle or a DevHandle to a bus/target.  Call our routine
2324 		 * which does this.
2325 		 */
2326 		error = mps_user_btdh(sc, (mps_btdh_mapping_t *)arg);
2327 		break;
2328 	default:
2329 		error = ENOIOCTL;
2330 		break;
2331 	}
2332 
2333 	if (mps_page != NULL)
2334 		free(mps_page, M_MPSUSER);
2335 
2336 	return (error);
2337 }
2338 
2339 #ifdef COMPAT_FREEBSD32
2340 
2341 struct mps_cfg_page_req32 {
2342 	MPI2_CONFIG_PAGE_HEADER header;
2343 	uint32_t page_address;
2344 	uint32_t buf;
2345 	int	len;
2346 	uint16_t ioc_status;
2347 };
2348 
2349 struct mps_ext_cfg_page_req32 {
2350 	MPI2_CONFIG_EXTENDED_PAGE_HEADER header;
2351 	uint32_t page_address;
2352 	uint32_t buf;
2353 	int	len;
2354 	uint16_t ioc_status;
2355 };
2356 
2357 struct mps_raid_action32 {
2358 	uint8_t action;
2359 	uint8_t volume_bus;
2360 	uint8_t volume_id;
2361 	uint8_t phys_disk_num;
2362 	uint32_t action_data_word;
2363 	uint32_t buf;
2364 	int len;
2365 	uint32_t volume_status;
2366 	uint32_t action_data[4];
2367 	uint16_t action_status;
2368 	uint16_t ioc_status;
2369 	uint8_t write;
2370 };
2371 
2372 struct mps_usr_command32 {
2373 	uint32_t req;
2374 	uint32_t req_len;
2375 	uint32_t rpl;
2376 	uint32_t rpl_len;
2377 	uint32_t buf;
2378 	int len;
2379 	uint32_t flags;
2380 };
2381 
2382 #define	MPSIO_READ_CFG_HEADER32	_IOWR('M', 200, struct mps_cfg_page_req32)
2383 #define	MPSIO_READ_CFG_PAGE32	_IOWR('M', 201, struct mps_cfg_page_req32)
2384 #define	MPSIO_READ_EXT_CFG_HEADER32 _IOWR('M', 202, struct mps_ext_cfg_page_req32)
2385 #define	MPSIO_READ_EXT_CFG_PAGE32 _IOWR('M', 203, struct mps_ext_cfg_page_req32)
2386 #define	MPSIO_WRITE_CFG_PAGE32	_IOWR('M', 204, struct mps_cfg_page_req32)
2387 #define	MPSIO_RAID_ACTION32	_IOWR('M', 205, struct mps_raid_action32)
2388 #define	MPSIO_MPS_COMMAND32	_IOWR('M', 210, struct mps_usr_command32)
2389 
2390 static int
2391 mps_ioctl32(struct cdev *dev, u_long cmd32, void *_arg, int flag,
2392     struct thread *td)
2393 {
2394 	struct mps_cfg_page_req32 *page32 = _arg;
2395 	struct mps_ext_cfg_page_req32 *ext32 = _arg;
2396 	struct mps_raid_action32 *raid32 = _arg;
2397 	struct mps_usr_command32 *user32 = _arg;
2398 	union {
2399 		struct mps_cfg_page_req page;
2400 		struct mps_ext_cfg_page_req ext;
2401 		struct mps_raid_action raid;
2402 		struct mps_usr_command user;
2403 	} arg;
2404 	u_long cmd;
2405 	int error;
2406 
2407 	switch (cmd32) {
2408 	case MPSIO_READ_CFG_HEADER32:
2409 	case MPSIO_READ_CFG_PAGE32:
2410 	case MPSIO_WRITE_CFG_PAGE32:
2411 		if (cmd32 == MPSIO_READ_CFG_HEADER32)
2412 			cmd = MPSIO_READ_CFG_HEADER;
2413 		else if (cmd32 == MPSIO_READ_CFG_PAGE32)
2414 			cmd = MPSIO_READ_CFG_PAGE;
2415 		else
2416 			cmd = MPSIO_WRITE_CFG_PAGE;
2417 		CP(*page32, arg.page, header);
2418 		CP(*page32, arg.page, page_address);
2419 		PTRIN_CP(*page32, arg.page, buf);
2420 		CP(*page32, arg.page, len);
2421 		CP(*page32, arg.page, ioc_status);
2422 		break;
2423 
2424 	case MPSIO_READ_EXT_CFG_HEADER32:
2425 	case MPSIO_READ_EXT_CFG_PAGE32:
2426 		if (cmd32 == MPSIO_READ_EXT_CFG_HEADER32)
2427 			cmd = MPSIO_READ_EXT_CFG_HEADER;
2428 		else
2429 			cmd = MPSIO_READ_EXT_CFG_PAGE;
2430 		CP(*ext32, arg.ext, header);
2431 		CP(*ext32, arg.ext, page_address);
2432 		PTRIN_CP(*ext32, arg.ext, buf);
2433 		CP(*ext32, arg.ext, len);
2434 		CP(*ext32, arg.ext, ioc_status);
2435 		break;
2436 
2437 	case MPSIO_RAID_ACTION32:
2438 		cmd = MPSIO_RAID_ACTION;
2439 		CP(*raid32, arg.raid, action);
2440 		CP(*raid32, arg.raid, volume_bus);
2441 		CP(*raid32, arg.raid, volume_id);
2442 		CP(*raid32, arg.raid, phys_disk_num);
2443 		CP(*raid32, arg.raid, action_data_word);
2444 		PTRIN_CP(*raid32, arg.raid, buf);
2445 		CP(*raid32, arg.raid, len);
2446 		CP(*raid32, arg.raid, volume_status);
2447 		bcopy(raid32->action_data, arg.raid.action_data,
2448 		    sizeof arg.raid.action_data);
2449 		CP(*raid32, arg.raid, ioc_status);
2450 		CP(*raid32, arg.raid, write);
2451 		break;
2452 
2453 	case MPSIO_MPS_COMMAND32:
2454 		cmd = MPSIO_MPS_COMMAND;
2455 		PTRIN_CP(*user32, arg.user, req);
2456 		CP(*user32, arg.user, req_len);
2457 		PTRIN_CP(*user32, arg.user, rpl);
2458 		CP(*user32, arg.user, rpl_len);
2459 		PTRIN_CP(*user32, arg.user, buf);
2460 		CP(*user32, arg.user, len);
2461 		CP(*user32, arg.user, flags);
2462 		break;
2463 	default:
2464 		return (ENOIOCTL);
2465 	}
2466 
2467 	error = mps_ioctl(dev, cmd, &arg, flag, td);
2468 	if (error == 0 && (cmd32 & IOC_OUT) != 0) {
2469 		switch (cmd32) {
2470 		case MPSIO_READ_CFG_HEADER32:
2471 		case MPSIO_READ_CFG_PAGE32:
2472 		case MPSIO_WRITE_CFG_PAGE32:
2473 			CP(arg.page, *page32, header);
2474 			CP(arg.page, *page32, page_address);
2475 			PTROUT_CP(arg.page, *page32, buf);
2476 			CP(arg.page, *page32, len);
2477 			CP(arg.page, *page32, ioc_status);
2478 			break;
2479 
2480 		case MPSIO_READ_EXT_CFG_HEADER32:
2481 		case MPSIO_READ_EXT_CFG_PAGE32:
2482 			CP(arg.ext, *ext32, header);
2483 			CP(arg.ext, *ext32, page_address);
2484 			PTROUT_CP(arg.ext, *ext32, buf);
2485 			CP(arg.ext, *ext32, len);
2486 			CP(arg.ext, *ext32, ioc_status);
2487 			break;
2488 
2489 		case MPSIO_RAID_ACTION32:
2490 			CP(arg.raid, *raid32, action);
2491 			CP(arg.raid, *raid32, volume_bus);
2492 			CP(arg.raid, *raid32, volume_id);
2493 			CP(arg.raid, *raid32, phys_disk_num);
2494 			CP(arg.raid, *raid32, action_data_word);
2495 			PTROUT_CP(arg.raid, *raid32, buf);
2496 			CP(arg.raid, *raid32, len);
2497 			CP(arg.raid, *raid32, volume_status);
2498 			bcopy(arg.raid.action_data, raid32->action_data,
2499 			    sizeof arg.raid.action_data);
2500 			CP(arg.raid, *raid32, ioc_status);
2501 			CP(arg.raid, *raid32, write);
2502 			break;
2503 
2504 		case MPSIO_MPS_COMMAND32:
2505 			PTROUT_CP(arg.user, *user32, req);
2506 			CP(arg.user, *user32, req_len);
2507 			PTROUT_CP(arg.user, *user32, rpl);
2508 			CP(arg.user, *user32, rpl_len);
2509 			PTROUT_CP(arg.user, *user32, buf);
2510 			CP(arg.user, *user32, len);
2511 			CP(arg.user, *user32, flags);
2512 			break;
2513 		}
2514 	}
2515 
2516 	return (error);
2517 }
2518 #endif /* COMPAT_FREEBSD32 */
2519 
2520 static int
2521 mps_ioctl_devsw(struct cdev *dev, u_long com, caddr_t arg, int flag,
2522     struct thread *td)
2523 {
2524 #ifdef COMPAT_FREEBSD32
2525 	if (SV_CURPROC_FLAG(SV_ILP32))
2526 		return (mps_ioctl32(dev, com, arg, flag, td));
2527 #endif
2528 	return (mps_ioctl(dev, com, arg, flag, td));
2529 }
2530