xref: /freebsd/sys/dev/mps/mps_user.c (revision 0957b409)
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 		return (EINVAL);
807 
808 	mps_dprint(sc, MPS_USER, "%s: req 0x%jx %d  rpl 0x%jx %d "
809 	    "data in 0x%jx %d data out 0x%jx %d data dir %d\n", __func__,
810 	    data->PtrRequest, data->RequestSize, data->PtrReply,
811 	    data->ReplySize, data->PtrData, data->DataSize,
812 	    data->PtrDataOut, data->DataOutSize, data->DataDirection);
813 
814 	/*
815 	 * copy in the header so we know what we're dealing with before we
816 	 * commit to allocating a command for it.
817 	 */
818 	err = copyin(PTRIN(data->PtrRequest), &tmphdr, data->RequestSize);
819 	if (err != 0)
820 		goto RetFreeUnlocked;
821 
822 	if (data->RequestSize > (int)sc->reqframesz) {
823 		err = EINVAL;
824 		goto RetFreeUnlocked;
825 	}
826 
827 	function = tmphdr.Function;
828 	mps_dprint(sc, MPS_USER, "%s: Function %02X MsgFlags %02X\n", __func__,
829 	    function, tmphdr.MsgFlags);
830 
831 	/*
832 	 * Handle a passthru TM request.
833 	 */
834 	if (function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
835 		MPI2_SCSI_TASK_MANAGE_REQUEST	*task;
836 
837 		mps_lock(sc);
838 		cm = mpssas_alloc_tm(sc);
839 		if (cm == NULL) {
840 			err = EINVAL;
841 			goto Ret;
842 		}
843 
844 		/* Copy the header in.  Only a small fixup is needed. */
845 		task = (MPI2_SCSI_TASK_MANAGE_REQUEST *)cm->cm_req;
846 		bcopy(&tmphdr, task, data->RequestSize);
847 		task->TaskMID = cm->cm_desc.Default.SMID;
848 
849 		cm->cm_data = NULL;
850 		cm->cm_complete = NULL;
851 		cm->cm_complete_data = NULL;
852 
853 		targ = mpssas_find_target_by_handle(sc->sassc, 0,
854 		    task->DevHandle);
855 		if (targ == NULL) {
856 			mps_dprint(sc, MPS_INFO,
857 			   "%s %d : invalid handle for requested TM 0x%x \n",
858 			   __func__, __LINE__, task->DevHandle);
859 			err = 1;
860 		} else {
861 			mpssas_prepare_for_tm(sc, cm, targ, CAM_LUN_WILDCARD);
862 			err = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
863 		}
864 
865 		if (err != 0) {
866 			err = EIO;
867 			mps_dprint(sc, MPS_FAULT, "%s: task management failed",
868 			    __func__);
869 		}
870 		/*
871 		 * Copy the reply data and sense data to user space.
872 		 */
873 		if ((cm != NULL) && (cm->cm_reply != NULL)) {
874 			rpl = (MPI2_DEFAULT_REPLY *)cm->cm_reply;
875 			sz = rpl->MsgLength * 4;
876 
877 			if (sz > data->ReplySize) {
878 				mps_printf(sc, "%s: user reply buffer (%d) "
879 				    "smaller than returned buffer (%d)\n",
880 				    __func__, data->ReplySize, sz);
881 			}
882 			mps_unlock(sc);
883 			copyout(cm->cm_reply, PTRIN(data->PtrReply),
884 			    data->ReplySize);
885 			mps_lock(sc);
886 		}
887 		mpssas_free_tm(sc, cm);
888 		goto Ret;
889 	}
890 
891 	mps_lock(sc);
892 	cm = mps_alloc_command(sc);
893 
894 	if (cm == NULL) {
895 		mps_printf(sc, "%s: no mps requests\n", __func__);
896 		err = ENOMEM;
897 		goto Ret;
898 	}
899 	mps_unlock(sc);
900 
901 	hdr = (MPI2_REQUEST_HEADER *)cm->cm_req;
902 	bcopy(&tmphdr, hdr, data->RequestSize);
903 
904 	/*
905 	 * Do some checking to make sure the IOCTL request contains a valid
906 	 * request.  Then set the SGL info.
907 	 */
908 	mpi_init_sge(cm, hdr, (void *)((uint8_t *)hdr + data->RequestSize));
909 
910 	/*
911 	 * Set up for read, write or both.  From check above, DataOutSize will
912 	 * be 0 if direction is READ or WRITE, but it will have some non-zero
913 	 * value if the direction is BOTH.  So, just use the biggest size to get
914 	 * the cm_data buffer size.  If direction is BOTH, 2 SGLs need to be set
915 	 * up; the first is for the request and the second will contain the
916 	 * response data. cm_out_len needs to be set here and this will be used
917 	 * when the SGLs are set up.
918 	 */
919 	cm->cm_data = NULL;
920 	cm->cm_length = MAX(data->DataSize, data->DataOutSize);
921 	cm->cm_out_len = data->DataOutSize;
922 	cm->cm_flags = 0;
923 	if (cm->cm_length != 0) {
924 		cm->cm_data = malloc(cm->cm_length, M_MPSUSER, M_WAITOK |
925 		    M_ZERO);
926 		cm->cm_flags = MPS_CM_FLAGS_DATAIN;
927 		if (data->DataOutSize) {
928 			cm->cm_flags |= MPS_CM_FLAGS_DATAOUT;
929 			err = copyin(PTRIN(data->PtrDataOut),
930 			    cm->cm_data, data->DataOutSize);
931 		} else if (data->DataDirection ==
932 		    MPS_PASS_THRU_DIRECTION_WRITE) {
933 			cm->cm_flags = MPS_CM_FLAGS_DATAOUT;
934 			err = copyin(PTRIN(data->PtrData),
935 			    cm->cm_data, data->DataSize);
936 		}
937 		if (err != 0)
938 			mps_dprint(sc, MPS_FAULT, "%s: failed to copy "
939 			    "IOCTL data from user space\n", __func__);
940 	}
941 	cm->cm_flags |= MPS_CM_FLAGS_SGE_SIMPLE;
942 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
943 
944 	/*
945 	 * Set up Sense buffer and SGL offset for IO passthru.  SCSI IO request
946 	 * uses SCSI IO descriptor.
947 	 */
948 	if ((function == MPI2_FUNCTION_SCSI_IO_REQUEST) ||
949 	    (function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
950 		MPI2_SCSI_IO_REQUEST	*scsi_io_req;
951 
952 		scsi_io_req = (MPI2_SCSI_IO_REQUEST *)hdr;
953 		/*
954 		 * Put SGE for data and data_out buffer at the end of
955 		 * scsi_io_request message header (64 bytes in total).
956 		 * Following above SGEs, the residual space will be used by
957 		 * sense data.
958 		 */
959 		scsi_io_req->SenseBufferLength = (uint8_t)(data->RequestSize -
960 		    64);
961 		scsi_io_req->SenseBufferLowAddress = htole32(cm->cm_sense_busaddr);
962 
963 		/*
964 		 * Set SGLOffset0 value.  This is the number of dwords that SGL
965 		 * is offset from the beginning of MPI2_SCSI_IO_REQUEST struct.
966 		 */
967 		scsi_io_req->SGLOffset0 = 24;
968 
969 		/*
970 		 * Setup descriptor info.  RAID passthrough must use the
971 		 * default request descriptor which is already set, so if this
972 		 * is a SCSI IO request, change the descriptor to SCSI IO.
973 		 * Also, if this is a SCSI IO request, handle the reply in the
974 		 * mpssas_scsio_complete function.
975 		 */
976 		if (function == MPI2_FUNCTION_SCSI_IO_REQUEST) {
977 			cm->cm_desc.SCSIIO.RequestFlags =
978 			    MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
979 			cm->cm_desc.SCSIIO.DevHandle = scsi_io_req->DevHandle;
980 
981 			/*
982 			 * Make sure the DevHandle is not 0 because this is a
983 			 * likely error.
984 			 */
985 			if (scsi_io_req->DevHandle == 0) {
986 				err = EINVAL;
987 				goto RetFreeUnlocked;
988 			}
989 		}
990 	}
991 
992 	mps_lock(sc);
993 
994 	err = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
995 
996 	if (err || (cm == NULL)) {
997 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
998 		    err);
999 		mps_unlock(sc);
1000 		goto RetFreeUnlocked;
1001 	}
1002 
1003 	/*
1004 	 * Sync the DMA data, if any.  Then copy the data to user space.
1005 	 */
1006 	if (cm->cm_data != NULL) {
1007 		if (cm->cm_flags & MPS_CM_FLAGS_DATAIN)
1008 			dir = BUS_DMASYNC_POSTREAD;
1009 		else if (cm->cm_flags & MPS_CM_FLAGS_DATAOUT)
1010 			dir = BUS_DMASYNC_POSTWRITE;
1011 		bus_dmamap_sync(sc->buffer_dmat, cm->cm_dmamap, dir);
1012 		bus_dmamap_unload(sc->buffer_dmat, cm->cm_dmamap);
1013 
1014 		if (cm->cm_flags & MPS_CM_FLAGS_DATAIN) {
1015 			mps_unlock(sc);
1016 			err = copyout(cm->cm_data,
1017 			    PTRIN(data->PtrData), data->DataSize);
1018 			mps_lock(sc);
1019 			if (err != 0)
1020 				mps_dprint(sc, MPS_FAULT, "%s: failed to copy "
1021 				    "IOCTL data to user space\n", __func__);
1022 		}
1023 	}
1024 
1025 	/*
1026 	 * Copy the reply data and sense data to user space.
1027 	 */
1028 	if (cm->cm_reply != NULL) {
1029 		rpl = (MPI2_DEFAULT_REPLY *)cm->cm_reply;
1030 		sz = rpl->MsgLength * 4;
1031 
1032 		if (sz > data->ReplySize) {
1033 			mps_printf(sc, "%s: user reply buffer (%d) smaller "
1034 			    "than returned buffer (%d)\n", __func__,
1035 			    data->ReplySize, sz);
1036 		}
1037 		mps_unlock(sc);
1038 		copyout(cm->cm_reply, PTRIN(data->PtrReply), data->ReplySize);
1039 		mps_lock(sc);
1040 
1041 		if ((function == MPI2_FUNCTION_SCSI_IO_REQUEST) ||
1042 		    (function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
1043 			if (((MPI2_SCSI_IO_REPLY *)rpl)->SCSIState &
1044 			    MPI2_SCSI_STATE_AUTOSENSE_VALID) {
1045 				sense_len =
1046 				    MIN((le32toh(((MPI2_SCSI_IO_REPLY *)rpl)->
1047 				    SenseCount)), sizeof(struct
1048 				    scsi_sense_data));
1049 				mps_unlock(sc);
1050 				copyout(cm->cm_sense, (PTRIN(data->PtrReply +
1051 				    sizeof(MPI2_SCSI_IO_REPLY))), sense_len);
1052 				mps_lock(sc);
1053 			}
1054 		}
1055 	}
1056 	mps_unlock(sc);
1057 
1058 RetFreeUnlocked:
1059 	mps_lock(sc);
1060 
1061 	if (cm != NULL) {
1062 		if (cm->cm_data)
1063 			free(cm->cm_data, M_MPSUSER);
1064 		mps_free_command(sc, cm);
1065 	}
1066 Ret:
1067 	sc->mps_flags &= ~MPS_FLAGS_BUSY;
1068 	mps_unlock(sc);
1069 
1070 	return (err);
1071 }
1072 
1073 static void
1074 mps_user_get_adapter_data(struct mps_softc *sc, mps_adapter_data_t *data)
1075 {
1076 	Mpi2ConfigReply_t	mpi_reply;
1077 	Mpi2BiosPage3_t		config_page;
1078 
1079 	/*
1080 	 * Use the PCI interface functions to get the Bus, Device, and Function
1081 	 * information.
1082 	 */
1083 	data->PciInformation.u.bits.BusNumber = pci_get_bus(sc->mps_dev);
1084 	data->PciInformation.u.bits.DeviceNumber = pci_get_slot(sc->mps_dev);
1085 	data->PciInformation.u.bits.FunctionNumber =
1086 	    pci_get_function(sc->mps_dev);
1087 
1088 	/*
1089 	 * Get the FW version that should already be saved in IOC Facts.
1090 	 */
1091 	data->MpiFirmwareVersion = sc->facts->FWVersion.Word;
1092 
1093 	/*
1094 	 * General device info.
1095 	 */
1096 	data->AdapterType = MPSIOCTL_ADAPTER_TYPE_SAS2;
1097 	if (sc->mps_flags & MPS_FLAGS_WD_AVAILABLE)
1098 		data->AdapterType = MPSIOCTL_ADAPTER_TYPE_SAS2_SSS6200;
1099 	data->PCIDeviceHwId = pci_get_device(sc->mps_dev);
1100 	data->PCIDeviceHwRev = pci_read_config(sc->mps_dev, PCIR_REVID, 1);
1101 	data->SubSystemId = pci_get_subdevice(sc->mps_dev);
1102 	data->SubsystemVendorId = pci_get_subvendor(sc->mps_dev);
1103 
1104 	/*
1105 	 * Get the driver version.
1106 	 */
1107 	strcpy((char *)&data->DriverVersion[0], MPS_DRIVER_VERSION);
1108 
1109 	/*
1110 	 * Need to get BIOS Config Page 3 for the BIOS Version.
1111 	 */
1112 	data->BiosVersion = 0;
1113 	mps_lock(sc);
1114 	if (mps_config_get_bios_pg3(sc, &mpi_reply, &config_page))
1115 		printf("%s: Error while retrieving BIOS Version\n", __func__);
1116 	else
1117 		data->BiosVersion = config_page.BiosVersion;
1118 	mps_unlock(sc);
1119 }
1120 
1121 static void
1122 mps_user_read_pci_info(struct mps_softc *sc, mps_pci_info_t *data)
1123 {
1124 	int	i;
1125 
1126 	/*
1127 	 * Use the PCI interface functions to get the Bus, Device, and Function
1128 	 * information.
1129 	 */
1130 	data->BusNumber = pci_get_bus(sc->mps_dev);
1131 	data->DeviceNumber = pci_get_slot(sc->mps_dev);
1132 	data->FunctionNumber = pci_get_function(sc->mps_dev);
1133 
1134 	/*
1135 	 * Now get the interrupt vector and the pci header.  The vector can
1136 	 * only be 0 right now.  The header is the first 256 bytes of config
1137 	 * space.
1138 	 */
1139 	data->InterruptVector = 0;
1140 	for (i = 0; i < sizeof (data->PciHeader); i++) {
1141 		data->PciHeader[i] = pci_read_config(sc->mps_dev, i, 1);
1142 	}
1143 }
1144 
1145 static uint8_t
1146 mps_get_fw_diag_buffer_number(struct mps_softc *sc, uint32_t unique_id)
1147 {
1148 	uint8_t	index;
1149 
1150 	for (index = 0; index < MPI2_DIAG_BUF_TYPE_COUNT; index++) {
1151 		if (sc->fw_diag_buffer_list[index].unique_id == unique_id) {
1152 			return (index);
1153 		}
1154 	}
1155 
1156 	return (MPS_FW_DIAGNOSTIC_UID_NOT_FOUND);
1157 }
1158 
1159 static int
1160 mps_post_fw_diag_buffer(struct mps_softc *sc,
1161     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code)
1162 {
1163 	MPI2_DIAG_BUFFER_POST_REQUEST	*req;
1164 	MPI2_DIAG_BUFFER_POST_REPLY	*reply = NULL;
1165 	struct mps_command		*cm = NULL;
1166 	int				i, status;
1167 
1168 	/*
1169 	 * If buffer is not enabled, just leave.
1170 	 */
1171 	*return_code = MPS_FW_DIAG_ERROR_POST_FAILED;
1172 	if (!pBuffer->enabled) {
1173 		return (MPS_DIAG_FAILURE);
1174 	}
1175 
1176 	/*
1177 	 * Clear some flags initially.
1178 	 */
1179 	pBuffer->force_release = FALSE;
1180 	pBuffer->valid_data = FALSE;
1181 	pBuffer->owned_by_firmware = FALSE;
1182 
1183 	/*
1184 	 * Get a command.
1185 	 */
1186 	cm = mps_alloc_command(sc);
1187 	if (cm == NULL) {
1188 		mps_printf(sc, "%s: no mps requests\n", __func__);
1189 		return (MPS_DIAG_FAILURE);
1190 	}
1191 
1192 	/*
1193 	 * Build the request for releasing the FW Diag Buffer and send it.
1194 	 */
1195 	req = (MPI2_DIAG_BUFFER_POST_REQUEST *)cm->cm_req;
1196 	req->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1197 	req->BufferType = pBuffer->buffer_type;
1198 	req->ExtendedType = pBuffer->extended_type;
1199 	req->BufferLength = pBuffer->size;
1200 	for (i = 0; i < (sizeof(req->ProductSpecific) / 4); i++)
1201 		req->ProductSpecific[i] = pBuffer->product_specific[i];
1202 	mps_from_u64(sc->fw_diag_busaddr, &req->BufferAddress);
1203 	cm->cm_data = NULL;
1204 	cm->cm_length = 0;
1205 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1206 	cm->cm_complete_data = NULL;
1207 
1208 	/*
1209 	 * Send command synchronously.
1210 	 */
1211 	status = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
1212 	if (status || (cm == NULL)) {
1213 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
1214 		    status);
1215 		status = MPS_DIAG_FAILURE;
1216 		goto done;
1217 	}
1218 
1219 	/*
1220 	 * Process POST reply.
1221 	 */
1222 	reply = (MPI2_DIAG_BUFFER_POST_REPLY *)cm->cm_reply;
1223 	if (reply == NULL) {
1224 		mps_printf(sc, "%s: reply is NULL, probably due to "
1225 		    "reinitialization\n", __func__);
1226 		status = MPS_DIAG_FAILURE;
1227 		goto done;
1228 	}
1229 	if ((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
1230 	    MPI2_IOCSTATUS_SUCCESS) {
1231 		status = MPS_DIAG_FAILURE;
1232 		mps_dprint(sc, MPS_FAULT, "%s: post of FW  Diag Buffer failed "
1233 		    "with IOCStatus = 0x%x, IOCLogInfo = 0x%x and "
1234 		    "TransferLength = 0x%x\n", __func__,
1235 		    le16toh(reply->IOCStatus), le32toh(reply->IOCLogInfo),
1236 		    le32toh(reply->TransferLength));
1237 		goto done;
1238 	}
1239 
1240 	/*
1241 	 * Post was successful.
1242 	 */
1243 	pBuffer->valid_data = TRUE;
1244 	pBuffer->owned_by_firmware = TRUE;
1245 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1246 	status = MPS_DIAG_SUCCESS;
1247 
1248 done:
1249 	if (cm != NULL)
1250 		mps_free_command(sc, cm);
1251 	return (status);
1252 }
1253 
1254 static int
1255 mps_release_fw_diag_buffer(struct mps_softc *sc,
1256     mps_fw_diagnostic_buffer_t *pBuffer, uint32_t *return_code,
1257     uint32_t diag_type)
1258 {
1259 	MPI2_DIAG_RELEASE_REQUEST	*req;
1260 	MPI2_DIAG_RELEASE_REPLY		*reply = NULL;
1261 	struct mps_command		*cm = NULL;
1262 	int				status;
1263 
1264 	/*
1265 	 * If buffer is not enabled, just leave.
1266 	 */
1267 	*return_code = MPS_FW_DIAG_ERROR_RELEASE_FAILED;
1268 	if (!pBuffer->enabled) {
1269 		mps_dprint(sc, MPS_USER, "%s: This buffer type is not "
1270 		    "supported by the IOC", __func__);
1271 		return (MPS_DIAG_FAILURE);
1272 	}
1273 
1274 	/*
1275 	 * Clear some flags initially.
1276 	 */
1277 	pBuffer->force_release = FALSE;
1278 	pBuffer->valid_data = FALSE;
1279 	pBuffer->owned_by_firmware = FALSE;
1280 
1281 	/*
1282 	 * Get a command.
1283 	 */
1284 	cm = mps_alloc_command(sc);
1285 	if (cm == NULL) {
1286 		mps_printf(sc, "%s: no mps requests\n", __func__);
1287 		return (MPS_DIAG_FAILURE);
1288 	}
1289 
1290 	/*
1291 	 * Build the request for releasing the FW Diag Buffer and send it.
1292 	 */
1293 	req = (MPI2_DIAG_RELEASE_REQUEST *)cm->cm_req;
1294 	req->Function = MPI2_FUNCTION_DIAG_RELEASE;
1295 	req->BufferType = pBuffer->buffer_type;
1296 	cm->cm_data = NULL;
1297 	cm->cm_length = 0;
1298 	cm->cm_desc.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1299 	cm->cm_complete_data = NULL;
1300 
1301 	/*
1302 	 * Send command synchronously.
1303 	 */
1304 	status = mps_wait_command(sc, &cm, 30, CAN_SLEEP);
1305 	if (status || (cm == NULL)) {
1306 		mps_printf(sc, "%s: invalid request: error %d\n", __func__,
1307 		    status);
1308 		status = MPS_DIAG_FAILURE;
1309 		goto done;
1310 	}
1311 
1312 	/*
1313 	 * Process RELEASE reply.
1314 	 */
1315 	reply = (MPI2_DIAG_RELEASE_REPLY *)cm->cm_reply;
1316 	if (reply == NULL) {
1317 		mps_printf(sc, "%s: reply is NULL, probably due to "
1318 		    "reinitialization\n", __func__);
1319 		status = MPS_DIAG_FAILURE;
1320 		goto done;
1321 	}
1322 	if (((le16toh(reply->IOCStatus) & MPI2_IOCSTATUS_MASK) !=
1323 	    MPI2_IOCSTATUS_SUCCESS) || pBuffer->owned_by_firmware) {
1324 		status = MPS_DIAG_FAILURE;
1325 		mps_dprint(sc, MPS_FAULT, "%s: release of FW Diag Buffer "
1326 		    "failed with IOCStatus = 0x%x and IOCLogInfo = 0x%x\n",
1327 		    __func__, le16toh(reply->IOCStatus),
1328 		    le32toh(reply->IOCLogInfo));
1329 		goto done;
1330 	}
1331 
1332 	/*
1333 	 * Release was successful.
1334 	 */
1335 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1336 	status = MPS_DIAG_SUCCESS;
1337 
1338 	/*
1339 	 * If this was for an UNREGISTER diag type command, clear the unique ID.
1340 	 */
1341 	if (diag_type == MPS_FW_DIAG_TYPE_UNREGISTER) {
1342 		pBuffer->unique_id = MPS_FW_DIAG_INVALID_UID;
1343 	}
1344 
1345 done:
1346 	if (cm != NULL)
1347 		mps_free_command(sc, cm);
1348 
1349 	return (status);
1350 }
1351 
1352 static int
1353 mps_diag_register(struct mps_softc *sc, mps_fw_diag_register_t *diag_register,
1354     uint32_t *return_code)
1355 {
1356 	mps_fw_diagnostic_buffer_t	*pBuffer;
1357 	struct mps_busdma_context	*ctx;
1358 	uint8_t				extended_type, buffer_type, i;
1359 	uint32_t			buffer_size;
1360 	uint32_t			unique_id;
1361 	int				status;
1362 	int				error;
1363 
1364 	extended_type = diag_register->ExtendedType;
1365 	buffer_type = diag_register->BufferType;
1366 	buffer_size = diag_register->RequestedBufferSize;
1367 	unique_id = diag_register->UniqueId;
1368 	ctx = NULL;
1369 	error = 0;
1370 
1371 	/*
1372 	 * Check for valid buffer type
1373 	 */
1374 	if (buffer_type >= MPI2_DIAG_BUF_TYPE_COUNT) {
1375 		*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1376 		return (MPS_DIAG_FAILURE);
1377 	}
1378 
1379 	/*
1380 	 * Get the current buffer and look up the unique ID.  The unique ID
1381 	 * should not be found.  If it is, the ID is already in use.
1382 	 */
1383 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1384 	pBuffer = &sc->fw_diag_buffer_list[buffer_type];
1385 	if (i != MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1386 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1387 		return (MPS_DIAG_FAILURE);
1388 	}
1389 
1390 	/*
1391 	 * The buffer's unique ID should not be registered yet, and the given
1392 	 * unique ID cannot be 0.
1393 	 */
1394 	if ((pBuffer->unique_id != MPS_FW_DIAG_INVALID_UID) ||
1395 	    (unique_id == MPS_FW_DIAG_INVALID_UID)) {
1396 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1397 		return (MPS_DIAG_FAILURE);
1398 	}
1399 
1400 	/*
1401 	 * If this buffer is already posted as immediate, just change owner.
1402 	 */
1403 	if (pBuffer->immediate && pBuffer->owned_by_firmware &&
1404 	    (pBuffer->unique_id == MPS_FW_DIAG_INVALID_UID)) {
1405 		pBuffer->immediate = FALSE;
1406 		pBuffer->unique_id = unique_id;
1407 		return (MPS_DIAG_SUCCESS);
1408 	}
1409 
1410 	/*
1411 	 * Post a new buffer after checking if it's enabled.  The DMA buffer
1412 	 * that is allocated will be contiguous (nsegments = 1).
1413 	 */
1414 	if (!pBuffer->enabled) {
1415 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1416 		return (MPS_DIAG_FAILURE);
1417 	}
1418 	if (bus_dma_tag_create( sc->mps_parent_dmat,    /* parent */
1419 				1, 0,			/* algnmnt, boundary */
1420 				BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
1421 				BUS_SPACE_MAXADDR,	/* highaddr */
1422 				NULL, NULL,		/* filter, filterarg */
1423                                 buffer_size,		/* maxsize */
1424                                 1,			/* nsegments */
1425                                 buffer_size,		/* maxsegsize */
1426                                 0,			/* flags */
1427                                 NULL, NULL,		/* lockfunc, lockarg */
1428                                 &sc->fw_diag_dmat)) {
1429 		mps_dprint(sc, MPS_ERROR,
1430 		    "Cannot allocate FW diag buffer DMA tag\n");
1431 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1432 		status = MPS_DIAG_FAILURE;
1433 		goto bailout;
1434 	}
1435 	if (bus_dmamem_alloc(sc->fw_diag_dmat, (void **)&sc->fw_diag_buffer,
1436 	    BUS_DMA_NOWAIT, &sc->fw_diag_map)) {
1437 		mps_dprint(sc, MPS_ERROR,
1438 		    "Cannot allocate FW diag buffer memory\n");
1439 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1440 		status = MPS_DIAG_FAILURE;
1441 		goto bailout;
1442         }
1443         bzero(sc->fw_diag_buffer, buffer_size);
1444 
1445 	ctx = malloc(sizeof(*ctx), M_MPSUSER, M_WAITOK | M_ZERO);
1446 	if (ctx == NULL) {
1447 		device_printf(sc->mps_dev, "%s: context malloc failed\n",
1448 		    __func__);
1449 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1450 		status = MPS_DIAG_FAILURE;
1451 		goto bailout;
1452 	}
1453 	ctx->addr = &sc->fw_diag_busaddr;
1454 	ctx->buffer_dmat = sc->fw_diag_dmat;
1455 	ctx->buffer_dmamap = sc->fw_diag_map;
1456 	ctx->softc = sc;
1457         error = bus_dmamap_load(sc->fw_diag_dmat, sc->fw_diag_map,
1458 	    sc->fw_diag_buffer, buffer_size, mps_memaddr_wait_cb,
1459 	    ctx, 0);
1460 
1461 	if (error == EINPROGRESS) {
1462 
1463 		/* XXX KDM */
1464 		device_printf(sc->mps_dev, "%s: Deferred bus_dmamap_load\n",
1465 		    __func__);
1466 		/*
1467 		 * Wait for the load to complete.  If we're interrupted,
1468 		 * bail out.
1469 		 */
1470 		mps_lock(sc);
1471 		if (ctx->completed == 0) {
1472 			error = msleep(ctx, &sc->mps_mtx, PCATCH, "mpswait", 0);
1473 			if (error != 0) {
1474 				/*
1475 				 * We got an error from msleep(9).  This is
1476 				 * most likely due to a signal.  Tell
1477 				 * mpr_memaddr_wait_cb() that we've abandoned
1478 				 * the context, so it needs to clean up when
1479 				 * it is called.
1480 				 */
1481 				ctx->abandoned = 1;
1482 
1483 				/* The callback will free this memory */
1484 				ctx = NULL;
1485 				mps_unlock(sc);
1486 
1487 				device_printf(sc->mps_dev, "Cannot "
1488 				    "bus_dmamap_load FW diag buffer, error = "
1489 				    "%d returned from msleep\n", error);
1490 				*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1491 				status = MPS_DIAG_FAILURE;
1492 				goto bailout;
1493 			}
1494 		}
1495 		mps_unlock(sc);
1496 	}
1497 
1498 	if ((error != 0) || (ctx->error != 0)) {
1499 		device_printf(sc->mps_dev, "Cannot bus_dmamap_load FW diag "
1500 		    "buffer, %serror = %d\n", error ? "" : "callback ",
1501 		    error ? error : ctx->error);
1502 		*return_code = MPS_FW_DIAG_ERROR_NO_BUFFER;
1503 		status = MPS_DIAG_FAILURE;
1504 		goto bailout;
1505 	}
1506 
1507 	bus_dmamap_sync(sc->fw_diag_dmat, sc->fw_diag_map, BUS_DMASYNC_PREREAD);
1508 
1509 	pBuffer->size = buffer_size;
1510 
1511 	/*
1512 	 * Copy the given info to the diag buffer and post the buffer.
1513 	 */
1514 	pBuffer->buffer_type = buffer_type;
1515 	pBuffer->immediate = FALSE;
1516 	if (buffer_type == MPI2_DIAG_BUF_TYPE_TRACE) {
1517 		for (i = 0; i < (sizeof (pBuffer->product_specific) / 4);
1518 		    i++) {
1519 			pBuffer->product_specific[i] =
1520 			    diag_register->ProductSpecific[i];
1521 		}
1522 	}
1523 	pBuffer->extended_type = extended_type;
1524 	pBuffer->unique_id = unique_id;
1525 	status = mps_post_fw_diag_buffer(sc, pBuffer, return_code);
1526 
1527 bailout:
1528 	/*
1529 	 * In case there was a failure, free the DMA buffer.
1530 	 */
1531 	if (status == MPS_DIAG_FAILURE) {
1532 		if (sc->fw_diag_busaddr != 0) {
1533 			bus_dmamap_unload(sc->fw_diag_dmat, sc->fw_diag_map);
1534 			sc->fw_diag_busaddr = 0;
1535 		}
1536 		if (sc->fw_diag_buffer != NULL) {
1537 			bus_dmamem_free(sc->fw_diag_dmat, sc->fw_diag_buffer,
1538 			    sc->fw_diag_map);
1539 			sc->fw_diag_buffer = NULL;
1540 		}
1541 		if (sc->fw_diag_dmat != NULL) {
1542 			bus_dma_tag_destroy(sc->fw_diag_dmat);
1543 			sc->fw_diag_dmat = NULL;
1544 		}
1545 	}
1546 
1547 	if (ctx != NULL)
1548 		free(ctx, M_MPSUSER);
1549 
1550 	return (status);
1551 }
1552 
1553 static int
1554 mps_diag_unregister(struct mps_softc *sc,
1555     mps_fw_diag_unregister_t *diag_unregister, uint32_t *return_code)
1556 {
1557 	mps_fw_diagnostic_buffer_t	*pBuffer;
1558 	uint8_t				i;
1559 	uint32_t			unique_id;
1560 	int				status;
1561 
1562 	unique_id = diag_unregister->UniqueId;
1563 
1564 	/*
1565 	 * Get the current buffer and look up the unique ID.  The unique ID
1566 	 * should be there.
1567 	 */
1568 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1569 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1570 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1571 		return (MPS_DIAG_FAILURE);
1572 	}
1573 
1574 	pBuffer = &sc->fw_diag_buffer_list[i];
1575 
1576 	/*
1577 	 * Try to release the buffer from FW before freeing it.  If release
1578 	 * fails, don't free the DMA buffer in case FW tries to access it
1579 	 * later.  If buffer is not owned by firmware, can't release it.
1580 	 */
1581 	if (!pBuffer->owned_by_firmware) {
1582 		status = MPS_DIAG_SUCCESS;
1583 	} else {
1584 		status = mps_release_fw_diag_buffer(sc, pBuffer, return_code,
1585 		    MPS_FW_DIAG_TYPE_UNREGISTER);
1586 	}
1587 
1588 	/*
1589 	 * At this point, return the current status no matter what happens with
1590 	 * the DMA buffer.
1591 	 */
1592 	pBuffer->unique_id = MPS_FW_DIAG_INVALID_UID;
1593 	if (status == MPS_DIAG_SUCCESS) {
1594 		if (sc->fw_diag_busaddr != 0) {
1595 			bus_dmamap_unload(sc->fw_diag_dmat, sc->fw_diag_map);
1596 			sc->fw_diag_busaddr = 0;
1597 		}
1598 		if (sc->fw_diag_buffer != NULL) {
1599 			bus_dmamem_free(sc->fw_diag_dmat, sc->fw_diag_buffer,
1600 			    sc->fw_diag_map);
1601 			sc->fw_diag_buffer = NULL;
1602 		}
1603 		if (sc->fw_diag_dmat != NULL) {
1604 			bus_dma_tag_destroy(sc->fw_diag_dmat);
1605 			sc->fw_diag_dmat = NULL;
1606 		}
1607 	}
1608 
1609 	return (status);
1610 }
1611 
1612 static int
1613 mps_diag_query(struct mps_softc *sc, mps_fw_diag_query_t *diag_query,
1614     uint32_t *return_code)
1615 {
1616 	mps_fw_diagnostic_buffer_t	*pBuffer;
1617 	uint8_t				i;
1618 	uint32_t			unique_id;
1619 
1620 	unique_id = diag_query->UniqueId;
1621 
1622 	/*
1623 	 * If ID is valid, query on ID.
1624 	 * If ID is invalid, query on buffer type.
1625 	 */
1626 	if (unique_id == MPS_FW_DIAG_INVALID_UID) {
1627 		i = diag_query->BufferType;
1628 		if (i >= MPI2_DIAG_BUF_TYPE_COUNT) {
1629 			*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1630 			return (MPS_DIAG_FAILURE);
1631 		}
1632 	} else {
1633 		i = mps_get_fw_diag_buffer_number(sc, unique_id);
1634 		if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1635 			*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1636 			return (MPS_DIAG_FAILURE);
1637 		}
1638 	}
1639 
1640 	/*
1641 	 * Fill query structure with the diag buffer info.
1642 	 */
1643 	pBuffer = &sc->fw_diag_buffer_list[i];
1644 	diag_query->BufferType = pBuffer->buffer_type;
1645 	diag_query->ExtendedType = pBuffer->extended_type;
1646 	if (diag_query->BufferType == MPI2_DIAG_BUF_TYPE_TRACE) {
1647 		for (i = 0; i < (sizeof(diag_query->ProductSpecific) / 4);
1648 		    i++) {
1649 			diag_query->ProductSpecific[i] =
1650 			    pBuffer->product_specific[i];
1651 		}
1652 	}
1653 	diag_query->TotalBufferSize = pBuffer->size;
1654 	diag_query->DriverAddedBufferSize = 0;
1655 	diag_query->UniqueId = pBuffer->unique_id;
1656 	diag_query->ApplicationFlags = 0;
1657 	diag_query->DiagnosticFlags = 0;
1658 
1659 	/*
1660 	 * Set/Clear application flags
1661 	 */
1662 	if (pBuffer->immediate) {
1663 		diag_query->ApplicationFlags &= ~MPS_FW_DIAG_FLAG_APP_OWNED;
1664 	} else {
1665 		diag_query->ApplicationFlags |= MPS_FW_DIAG_FLAG_APP_OWNED;
1666 	}
1667 	if (pBuffer->valid_data || pBuffer->owned_by_firmware) {
1668 		diag_query->ApplicationFlags |= MPS_FW_DIAG_FLAG_BUFFER_VALID;
1669 	} else {
1670 		diag_query->ApplicationFlags &= ~MPS_FW_DIAG_FLAG_BUFFER_VALID;
1671 	}
1672 	if (pBuffer->owned_by_firmware) {
1673 		diag_query->ApplicationFlags |=
1674 		    MPS_FW_DIAG_FLAG_FW_BUFFER_ACCESS;
1675 	} else {
1676 		diag_query->ApplicationFlags &=
1677 		    ~MPS_FW_DIAG_FLAG_FW_BUFFER_ACCESS;
1678 	}
1679 
1680 	return (MPS_DIAG_SUCCESS);
1681 }
1682 
1683 static int
1684 mps_diag_read_buffer(struct mps_softc *sc,
1685     mps_diag_read_buffer_t *diag_read_buffer, uint8_t *ioctl_buf,
1686     uint32_t *return_code)
1687 {
1688 	mps_fw_diagnostic_buffer_t	*pBuffer;
1689 	uint8_t				i, *pData;
1690 	uint32_t			unique_id;
1691 	int				status;
1692 
1693 	unique_id = diag_read_buffer->UniqueId;
1694 
1695 	/*
1696 	 * Get the current buffer and look up the unique ID.  The unique ID
1697 	 * should be there.
1698 	 */
1699 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1700 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1701 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1702 		return (MPS_DIAG_FAILURE);
1703 	}
1704 
1705 	pBuffer = &sc->fw_diag_buffer_list[i];
1706 
1707 	/*
1708 	 * Make sure requested read is within limits
1709 	 */
1710 	if (diag_read_buffer->StartingOffset + diag_read_buffer->BytesToRead >
1711 	    pBuffer->size) {
1712 		*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1713 		return (MPS_DIAG_FAILURE);
1714 	}
1715 
1716 	/* Sync the DMA map before we copy to userland. */
1717 	bus_dmamap_sync(sc->fw_diag_dmat, sc->fw_diag_map,
1718 	    BUS_DMASYNC_POSTREAD);
1719 
1720 	/*
1721 	 * Copy the requested data from DMA to the diag_read_buffer.  The DMA
1722 	 * buffer that was allocated is one contiguous buffer.
1723 	 */
1724 	pData = (uint8_t *)(sc->fw_diag_buffer +
1725 	    diag_read_buffer->StartingOffset);
1726 	if (copyout(pData, ioctl_buf, diag_read_buffer->BytesToRead) != 0)
1727 		return (MPS_DIAG_FAILURE);
1728 	diag_read_buffer->Status = 0;
1729 
1730 	/*
1731 	 * Set or clear the Force Release flag.
1732 	 */
1733 	if (pBuffer->force_release) {
1734 		diag_read_buffer->Flags |= MPS_FW_DIAG_FLAG_FORCE_RELEASE;
1735 	} else {
1736 		diag_read_buffer->Flags &= ~MPS_FW_DIAG_FLAG_FORCE_RELEASE;
1737 	}
1738 
1739 	/*
1740 	 * If buffer is to be reregistered, make sure it's not already owned by
1741 	 * firmware first.
1742 	 */
1743 	status = MPS_DIAG_SUCCESS;
1744 	if (!pBuffer->owned_by_firmware) {
1745 		if (diag_read_buffer->Flags & MPS_FW_DIAG_FLAG_REREGISTER) {
1746 			status = mps_post_fw_diag_buffer(sc, pBuffer,
1747 			    return_code);
1748 		}
1749 	}
1750 
1751 	return (status);
1752 }
1753 
1754 static int
1755 mps_diag_release(struct mps_softc *sc, mps_fw_diag_release_t *diag_release,
1756     uint32_t *return_code)
1757 {
1758 	mps_fw_diagnostic_buffer_t	*pBuffer;
1759 	uint8_t				i;
1760 	uint32_t			unique_id;
1761 	int				status;
1762 
1763 	unique_id = diag_release->UniqueId;
1764 
1765 	/*
1766 	 * Get the current buffer and look up the unique ID.  The unique ID
1767 	 * should be there.
1768 	 */
1769 	i = mps_get_fw_diag_buffer_number(sc, unique_id);
1770 	if (i == MPS_FW_DIAGNOSTIC_UID_NOT_FOUND) {
1771 		*return_code = MPS_FW_DIAG_ERROR_INVALID_UID;
1772 		return (MPS_DIAG_FAILURE);
1773 	}
1774 
1775 	pBuffer = &sc->fw_diag_buffer_list[i];
1776 
1777 	/*
1778 	 * If buffer is not owned by firmware, it's already been released.
1779 	 */
1780 	if (!pBuffer->owned_by_firmware) {
1781 		*return_code = MPS_FW_DIAG_ERROR_ALREADY_RELEASED;
1782 		return (MPS_DIAG_FAILURE);
1783 	}
1784 
1785 	/*
1786 	 * Release the buffer.
1787 	 */
1788 	status = mps_release_fw_diag_buffer(sc, pBuffer, return_code,
1789 	    MPS_FW_DIAG_TYPE_RELEASE);
1790 	return (status);
1791 }
1792 
1793 static int
1794 mps_do_diag_action(struct mps_softc *sc, uint32_t action, uint8_t *diag_action,
1795     uint32_t length, uint32_t *return_code)
1796 {
1797 	mps_fw_diag_register_t		diag_register;
1798 	mps_fw_diag_unregister_t	diag_unregister;
1799 	mps_fw_diag_query_t		diag_query;
1800 	mps_diag_read_buffer_t		diag_read_buffer;
1801 	mps_fw_diag_release_t		diag_release;
1802 	int				status = MPS_DIAG_SUCCESS;
1803 	uint32_t			original_return_code;
1804 
1805 	original_return_code = *return_code;
1806 	*return_code = MPS_FW_DIAG_ERROR_SUCCESS;
1807 
1808 	switch (action) {
1809 		case MPS_FW_DIAG_TYPE_REGISTER:
1810 			if (!length) {
1811 				*return_code =
1812 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1813 				status = MPS_DIAG_FAILURE;
1814 				break;
1815 			}
1816 			if (copyin(diag_action, &diag_register,
1817 			    sizeof(diag_register)) != 0)
1818 				return (MPS_DIAG_FAILURE);
1819 			status = mps_diag_register(sc, &diag_register,
1820 			    return_code);
1821 			break;
1822 
1823 		case MPS_FW_DIAG_TYPE_UNREGISTER:
1824 			if (length < sizeof(diag_unregister)) {
1825 				*return_code =
1826 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1827 				status = MPS_DIAG_FAILURE;
1828 				break;
1829 			}
1830 			if (copyin(diag_action, &diag_unregister,
1831 			    sizeof(diag_unregister)) != 0)
1832 				return (MPS_DIAG_FAILURE);
1833 			status = mps_diag_unregister(sc, &diag_unregister,
1834 			    return_code);
1835 			break;
1836 
1837 		case MPS_FW_DIAG_TYPE_QUERY:
1838 			if (length < sizeof (diag_query)) {
1839 				*return_code =
1840 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1841 				status = MPS_DIAG_FAILURE;
1842 				break;
1843 			}
1844 			if (copyin(diag_action, &diag_query, sizeof(diag_query))
1845 			    != 0)
1846 				return (MPS_DIAG_FAILURE);
1847 			status = mps_diag_query(sc, &diag_query, return_code);
1848 			if (status == MPS_DIAG_SUCCESS)
1849 				if (copyout(&diag_query, diag_action,
1850 				    sizeof (diag_query)) != 0)
1851 					return (MPS_DIAG_FAILURE);
1852 			break;
1853 
1854 		case MPS_FW_DIAG_TYPE_READ_BUFFER:
1855 			if (copyin(diag_action, &diag_read_buffer,
1856 			    sizeof(diag_read_buffer)) != 0)
1857 				return (MPS_DIAG_FAILURE);
1858 			if (length < diag_read_buffer.BytesToRead) {
1859 				*return_code =
1860 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1861 				status = MPS_DIAG_FAILURE;
1862 				break;
1863 			}
1864 			status = mps_diag_read_buffer(sc, &diag_read_buffer,
1865 			    PTRIN(diag_read_buffer.PtrDataBuffer),
1866 			    return_code);
1867 			if (status == MPS_DIAG_SUCCESS) {
1868 				if (copyout(&diag_read_buffer, diag_action,
1869 				    sizeof(diag_read_buffer) -
1870 				    sizeof(diag_read_buffer.PtrDataBuffer)) !=
1871 				    0)
1872 					return (MPS_DIAG_FAILURE);
1873 			}
1874 			break;
1875 
1876 		case MPS_FW_DIAG_TYPE_RELEASE:
1877 			if (length < sizeof(diag_release)) {
1878 				*return_code =
1879 				    MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1880 				status = MPS_DIAG_FAILURE;
1881 				break;
1882 			}
1883 			if (copyin(diag_action, &diag_release,
1884 			    sizeof(diag_release)) != 0)
1885 				return (MPS_DIAG_FAILURE);
1886 			status = mps_diag_release(sc, &diag_release,
1887 			    return_code);
1888 			break;
1889 
1890 		default:
1891 			*return_code = MPS_FW_DIAG_ERROR_INVALID_PARAMETER;
1892 			status = MPS_DIAG_FAILURE;
1893 			break;
1894 	}
1895 
1896 	if ((status == MPS_DIAG_FAILURE) &&
1897 	    (original_return_code == MPS_FW_DIAG_NEW) &&
1898 	    (*return_code != MPS_FW_DIAG_ERROR_SUCCESS))
1899 		status = MPS_DIAG_SUCCESS;
1900 
1901 	return (status);
1902 }
1903 
1904 static int
1905 mps_user_diag_action(struct mps_softc *sc, mps_diag_action_t *data)
1906 {
1907 	int			status;
1908 
1909 	/*
1910 	 * Only allow one diag action at one time.
1911 	 */
1912 	if (sc->mps_flags & MPS_FLAGS_BUSY) {
1913 		mps_dprint(sc, MPS_USER, "%s: Only one FW diag command "
1914 		    "allowed at a single time.", __func__);
1915 		return (EBUSY);
1916 	}
1917 	sc->mps_flags |= MPS_FLAGS_BUSY;
1918 
1919 	/*
1920 	 * Send diag action request
1921 	 */
1922 	if (data->Action == MPS_FW_DIAG_TYPE_REGISTER ||
1923 	    data->Action == MPS_FW_DIAG_TYPE_UNREGISTER ||
1924 	    data->Action == MPS_FW_DIAG_TYPE_QUERY ||
1925 	    data->Action == MPS_FW_DIAG_TYPE_READ_BUFFER ||
1926 	    data->Action == MPS_FW_DIAG_TYPE_RELEASE) {
1927 		status = mps_do_diag_action(sc, data->Action,
1928 		    PTRIN(data->PtrDiagAction), data->Length,
1929 		    &data->ReturnCode);
1930 	} else
1931 		status = EINVAL;
1932 
1933 	sc->mps_flags &= ~MPS_FLAGS_BUSY;
1934 	return (status);
1935 }
1936 
1937 /*
1938  * Copy the event recording mask and the event queue size out.  For
1939  * clarification, the event recording mask (events_to_record) is not the same
1940  * thing as the event mask (event_mask).  events_to_record has a bit set for
1941  * every event type that is to be recorded by the driver, and event_mask has a
1942  * bit cleared for every event that is allowed into the driver from the IOC.
1943  * They really have nothing to do with each other.
1944  */
1945 static void
1946 mps_user_event_query(struct mps_softc *sc, mps_event_query_t *data)
1947 {
1948 	uint8_t	i;
1949 
1950 	mps_lock(sc);
1951 	data->Entries = MPS_EVENT_QUEUE_SIZE;
1952 
1953 	for (i = 0; i < 4; i++) {
1954 		data->Types[i] = sc->events_to_record[i];
1955 	}
1956 	mps_unlock(sc);
1957 }
1958 
1959 /*
1960  * Set the driver's event mask according to what's been given.  See
1961  * mps_user_event_query for explanation of the event recording mask and the IOC
1962  * event mask.  It's the app's responsibility to enable event logging by setting
1963  * the bits in events_to_record.  Initially, no events will be logged.
1964  */
1965 static void
1966 mps_user_event_enable(struct mps_softc *sc, mps_event_enable_t *data)
1967 {
1968 	uint8_t	i;
1969 
1970 	mps_lock(sc);
1971 	for (i = 0; i < 4; i++) {
1972 		sc->events_to_record[i] = data->Types[i];
1973 	}
1974 	mps_unlock(sc);
1975 }
1976 
1977 /*
1978  * Copy out the events that have been recorded, up to the max events allowed.
1979  */
1980 static int
1981 mps_user_event_report(struct mps_softc *sc, mps_event_report_t *data)
1982 {
1983 	int		status = 0;
1984 	uint32_t	size;
1985 
1986 	mps_lock(sc);
1987 	size = data->Size;
1988 	if ((size >= sizeof(sc->recorded_events)) && (status == 0)) {
1989 		mps_unlock(sc);
1990 		if (copyout((void *)sc->recorded_events,
1991 		    PTRIN(data->PtrEvents), size) != 0)
1992 			status = EFAULT;
1993 		mps_lock(sc);
1994 	} else {
1995 		/*
1996 		 * data->Size value is not large enough to copy event data.
1997 		 */
1998 		status = EFAULT;
1999 	}
2000 
2001 	/*
2002 	 * Change size value to match the number of bytes that were copied.
2003 	 */
2004 	if (status == 0)
2005 		data->Size = sizeof(sc->recorded_events);
2006 	mps_unlock(sc);
2007 
2008 	return (status);
2009 }
2010 
2011 /*
2012  * Record events into the driver from the IOC if they are not masked.
2013  */
2014 void
2015 mpssas_record_event(struct mps_softc *sc,
2016     MPI2_EVENT_NOTIFICATION_REPLY *event_reply)
2017 {
2018 	uint32_t	event;
2019 	int		i, j;
2020 	uint16_t	event_data_len;
2021 	boolean_t	sendAEN = FALSE;
2022 
2023 	event = event_reply->Event;
2024 
2025 	/*
2026 	 * Generate a system event to let anyone who cares know that a
2027 	 * LOG_ENTRY_ADDED event has occurred.  This is sent no matter what the
2028 	 * event mask is set to.
2029 	 */
2030 	if (event == MPI2_EVENT_LOG_ENTRY_ADDED) {
2031 		sendAEN = TRUE;
2032 	}
2033 
2034 	/*
2035 	 * Record the event only if its corresponding bit is set in
2036 	 * events_to_record.  event_index is the index into recorded_events and
2037 	 * event_number is the overall number of an event being recorded since
2038 	 * start-of-day.  event_index will roll over; event_number will never
2039 	 * roll over.
2040 	 */
2041 	i = (uint8_t)(event / 32);
2042 	j = (uint8_t)(event % 32);
2043 	if ((i < 4) && ((1 << j) & sc->events_to_record[i])) {
2044 		i = sc->event_index;
2045 		sc->recorded_events[i].Type = event;
2046 		sc->recorded_events[i].Number = ++sc->event_number;
2047 		bzero(sc->recorded_events[i].Data, MPS_MAX_EVENT_DATA_LENGTH *
2048 		    4);
2049 		event_data_len = event_reply->EventDataLength;
2050 
2051 		if (event_data_len > 0) {
2052 			/*
2053 			 * Limit data to size in m_event entry
2054 			 */
2055 			if (event_data_len > MPS_MAX_EVENT_DATA_LENGTH) {
2056 				event_data_len = MPS_MAX_EVENT_DATA_LENGTH;
2057 			}
2058 			for (j = 0; j < event_data_len; j++) {
2059 				sc->recorded_events[i].Data[j] =
2060 				    event_reply->EventData[j];
2061 			}
2062 
2063 			/*
2064 			 * check for index wrap-around
2065 			 */
2066 			if (++i == MPS_EVENT_QUEUE_SIZE) {
2067 				i = 0;
2068 			}
2069 			sc->event_index = (uint8_t)i;
2070 
2071 			/*
2072 			 * Set flag to send the event.
2073 			 */
2074 			sendAEN = TRUE;
2075 		}
2076 	}
2077 
2078 	/*
2079 	 * Generate a system event if flag is set to let anyone who cares know
2080 	 * that an event has occurred.
2081 	 */
2082 	if (sendAEN) {
2083 //SLM-how to send a system event (see kqueue, kevent)
2084 //		(void) ddi_log_sysevent(mpt->m_dip, DDI_VENDOR_LSI, "MPT_SAS",
2085 //		    "SAS", NULL, NULL, DDI_NOSLEEP);
2086 	}
2087 }
2088 
2089 static int
2090 mps_user_reg_access(struct mps_softc *sc, mps_reg_access_t *data)
2091 {
2092 	int	status = 0;
2093 
2094 	switch (data->Command) {
2095 		/*
2096 		 * IO access is not supported.
2097 		 */
2098 		case REG_IO_READ:
2099 		case REG_IO_WRITE:
2100 			mps_dprint(sc, MPS_USER, "IO access is not supported. "
2101 			    "Use memory access.");
2102 			status = EINVAL;
2103 			break;
2104 
2105 		case REG_MEM_READ:
2106 			data->RegData = mps_regread(sc, data->RegOffset);
2107 			break;
2108 
2109 		case REG_MEM_WRITE:
2110 			mps_regwrite(sc, data->RegOffset, data->RegData);
2111 			break;
2112 
2113 		default:
2114 			status = EINVAL;
2115 			break;
2116 	}
2117 
2118 	return (status);
2119 }
2120 
2121 static int
2122 mps_user_btdh(struct mps_softc *sc, mps_btdh_mapping_t *data)
2123 {
2124 	uint8_t		bt2dh = FALSE;
2125 	uint8_t		dh2bt = FALSE;
2126 	uint16_t	dev_handle, bus, target;
2127 
2128 	bus = data->Bus;
2129 	target = data->TargetID;
2130 	dev_handle = data->DevHandle;
2131 
2132 	/*
2133 	 * When DevHandle is 0xFFFF and Bus/Target are not 0xFFFF, use Bus/
2134 	 * Target to get DevHandle.  When Bus/Target are 0xFFFF and DevHandle is
2135 	 * not 0xFFFF, use DevHandle to get Bus/Target.  Anything else is
2136 	 * invalid.
2137 	 */
2138 	if ((bus == 0xFFFF) && (target == 0xFFFF) && (dev_handle != 0xFFFF))
2139 		dh2bt = TRUE;
2140 	if ((dev_handle == 0xFFFF) && (bus != 0xFFFF) && (target != 0xFFFF))
2141 		bt2dh = TRUE;
2142 	if (!dh2bt && !bt2dh)
2143 		return (EINVAL);
2144 
2145 	/*
2146 	 * Only handle bus of 0.  Make sure target is within range.
2147 	 */
2148 	if (bt2dh) {
2149 		if (bus != 0)
2150 			return (EINVAL);
2151 
2152 		if (target > sc->max_devices) {
2153 			mps_dprint(sc, MPS_FAULT, "Target ID is out of range "
2154 			   "for Bus/Target to DevHandle mapping.");
2155 			return (EINVAL);
2156 		}
2157 		dev_handle = sc->mapping_table[target].dev_handle;
2158 		if (dev_handle)
2159 			data->DevHandle = dev_handle;
2160 	} else {
2161 		bus = 0;
2162 		target = mps_mapping_get_tid_from_handle(sc, dev_handle);
2163 		data->Bus = bus;
2164 		data->TargetID = target;
2165 	}
2166 
2167 	return (0);
2168 }
2169 
2170 static int
2171 mps_ioctl(struct cdev *dev, u_long cmd, void *arg, int flag,
2172     struct thread *td)
2173 {
2174 	struct mps_softc *sc;
2175 	struct mps_cfg_page_req *page_req;
2176 	struct mps_ext_cfg_page_req *ext_page_req;
2177 	void *mps_page;
2178 	int error, msleep_ret;
2179 
2180 	mps_page = NULL;
2181 	sc = dev->si_drv1;
2182 	page_req = (void *)arg;
2183 	ext_page_req = (void *)arg;
2184 
2185 	switch (cmd) {
2186 	case MPSIO_READ_CFG_HEADER:
2187 		mps_lock(sc);
2188 		error = mps_user_read_cfg_header(sc, page_req);
2189 		mps_unlock(sc);
2190 		break;
2191 	case MPSIO_READ_CFG_PAGE:
2192 		mps_page = malloc(page_req->len, M_MPSUSER, M_WAITOK | M_ZERO);
2193 		error = copyin(page_req->buf, mps_page,
2194 		    sizeof(MPI2_CONFIG_PAGE_HEADER));
2195 		if (error)
2196 			break;
2197 		mps_lock(sc);
2198 		error = mps_user_read_cfg_page(sc, page_req, mps_page);
2199 		mps_unlock(sc);
2200 		if (error)
2201 			break;
2202 		error = copyout(mps_page, page_req->buf, page_req->len);
2203 		break;
2204 	case MPSIO_READ_EXT_CFG_HEADER:
2205 		mps_lock(sc);
2206 		error = mps_user_read_extcfg_header(sc, ext_page_req);
2207 		mps_unlock(sc);
2208 		break;
2209 	case MPSIO_READ_EXT_CFG_PAGE:
2210 		mps_page = malloc(ext_page_req->len, M_MPSUSER, M_WAITOK|M_ZERO);
2211 		error = copyin(ext_page_req->buf, mps_page,
2212 		    sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER));
2213 		if (error)
2214 			break;
2215 		mps_lock(sc);
2216 		error = mps_user_read_extcfg_page(sc, ext_page_req, mps_page);
2217 		mps_unlock(sc);
2218 		if (error)
2219 			break;
2220 		error = copyout(mps_page, ext_page_req->buf, ext_page_req->len);
2221 		break;
2222 	case MPSIO_WRITE_CFG_PAGE:
2223 		mps_page = malloc(page_req->len, M_MPSUSER, M_WAITOK|M_ZERO);
2224 		error = copyin(page_req->buf, mps_page, page_req->len);
2225 		if (error)
2226 			break;
2227 		mps_lock(sc);
2228 		error = mps_user_write_cfg_page(sc, page_req, mps_page);
2229 		mps_unlock(sc);
2230 		break;
2231 	case MPSIO_MPS_COMMAND:
2232 		error = mps_user_command(sc, (struct mps_usr_command *)arg);
2233 		break;
2234 	case MPTIOCTL_PASS_THRU:
2235 		/*
2236 		 * The user has requested to pass through a command to be
2237 		 * executed by the MPT firmware.  Call our routine which does
2238 		 * this.  Only allow one passthru IOCTL at one time.
2239 		 */
2240 		error = mps_user_pass_thru(sc, (mps_pass_thru_t *)arg);
2241 		break;
2242 	case MPTIOCTL_GET_ADAPTER_DATA:
2243 		/*
2244 		 * The user has requested to read adapter data.  Call our
2245 		 * routine which does this.
2246 		 */
2247 		error = 0;
2248 		mps_user_get_adapter_data(sc, (mps_adapter_data_t *)arg);
2249 		break;
2250 	case MPTIOCTL_GET_PCI_INFO:
2251 		/*
2252 		 * The user has requested to read pci info.  Call
2253 		 * our routine which does this.
2254 		 */
2255 		mps_lock(sc);
2256 		error = 0;
2257 		mps_user_read_pci_info(sc, (mps_pci_info_t *)arg);
2258 		mps_unlock(sc);
2259 		break;
2260 	case MPTIOCTL_RESET_ADAPTER:
2261 		mps_lock(sc);
2262 		sc->port_enable_complete = 0;
2263 		uint32_t reinit_start = time_uptime;
2264 		error = mps_reinit(sc);
2265 		/* Sleep for 300 second. */
2266 		msleep_ret = msleep(&sc->port_enable_complete, &sc->mps_mtx, PRIBIO,
2267 		       "mps_porten", 300 * hz);
2268 		mps_unlock(sc);
2269 		if (msleep_ret)
2270 			printf("Port Enable did not complete after Diag "
2271 			    "Reset msleep error %d.\n", msleep_ret);
2272 		else
2273 			mps_dprint(sc, MPS_USER,
2274 				"Hard Reset with Port Enable completed in %d seconds.\n",
2275 				 (uint32_t) (time_uptime - reinit_start));
2276 		break;
2277 	case MPTIOCTL_DIAG_ACTION:
2278 		/*
2279 		 * The user has done a diag buffer action.  Call our routine
2280 		 * which does this.  Only allow one diag action at one time.
2281 		 */
2282 		mps_lock(sc);
2283 		error = mps_user_diag_action(sc, (mps_diag_action_t *)arg);
2284 		mps_unlock(sc);
2285 		break;
2286 	case MPTIOCTL_EVENT_QUERY:
2287 		/*
2288 		 * The user has done an event query. Call our routine which does
2289 		 * this.
2290 		 */
2291 		error = 0;
2292 		mps_user_event_query(sc, (mps_event_query_t *)arg);
2293 		break;
2294 	case MPTIOCTL_EVENT_ENABLE:
2295 		/*
2296 		 * The user has done an event enable. Call our routine which
2297 		 * does this.
2298 		 */
2299 		error = 0;
2300 		mps_user_event_enable(sc, (mps_event_enable_t *)arg);
2301 		break;
2302 	case MPTIOCTL_EVENT_REPORT:
2303 		/*
2304 		 * The user has done an event report. Call our routine which
2305 		 * does this.
2306 		 */
2307 		error = mps_user_event_report(sc, (mps_event_report_t *)arg);
2308 		break;
2309 	case MPTIOCTL_REG_ACCESS:
2310 		/*
2311 		 * The user has requested register access.  Call our routine
2312 		 * which does this.
2313 		 */
2314 		mps_lock(sc);
2315 		error = mps_user_reg_access(sc, (mps_reg_access_t *)arg);
2316 		mps_unlock(sc);
2317 		break;
2318 	case MPTIOCTL_BTDH_MAPPING:
2319 		/*
2320 		 * The user has requested to translate a bus/target to a
2321 		 * DevHandle or a DevHandle to a bus/target.  Call our routine
2322 		 * which does this.
2323 		 */
2324 		error = mps_user_btdh(sc, (mps_btdh_mapping_t *)arg);
2325 		break;
2326 	default:
2327 		error = ENOIOCTL;
2328 		break;
2329 	}
2330 
2331 	if (mps_page != NULL)
2332 		free(mps_page, M_MPSUSER);
2333 
2334 	return (error);
2335 }
2336 
2337 #ifdef COMPAT_FREEBSD32
2338 
2339 struct mps_cfg_page_req32 {
2340 	MPI2_CONFIG_PAGE_HEADER header;
2341 	uint32_t page_address;
2342 	uint32_t buf;
2343 	int	len;
2344 	uint16_t ioc_status;
2345 };
2346 
2347 struct mps_ext_cfg_page_req32 {
2348 	MPI2_CONFIG_EXTENDED_PAGE_HEADER header;
2349 	uint32_t page_address;
2350 	uint32_t buf;
2351 	int	len;
2352 	uint16_t ioc_status;
2353 };
2354 
2355 struct mps_raid_action32 {
2356 	uint8_t action;
2357 	uint8_t volume_bus;
2358 	uint8_t volume_id;
2359 	uint8_t phys_disk_num;
2360 	uint32_t action_data_word;
2361 	uint32_t buf;
2362 	int len;
2363 	uint32_t volume_status;
2364 	uint32_t action_data[4];
2365 	uint16_t action_status;
2366 	uint16_t ioc_status;
2367 	uint8_t write;
2368 };
2369 
2370 struct mps_usr_command32 {
2371 	uint32_t req;
2372 	uint32_t req_len;
2373 	uint32_t rpl;
2374 	uint32_t rpl_len;
2375 	uint32_t buf;
2376 	int len;
2377 	uint32_t flags;
2378 };
2379 
2380 #define	MPSIO_READ_CFG_HEADER32	_IOWR('M', 200, struct mps_cfg_page_req32)
2381 #define	MPSIO_READ_CFG_PAGE32	_IOWR('M', 201, struct mps_cfg_page_req32)
2382 #define	MPSIO_READ_EXT_CFG_HEADER32 _IOWR('M', 202, struct mps_ext_cfg_page_req32)
2383 #define	MPSIO_READ_EXT_CFG_PAGE32 _IOWR('M', 203, struct mps_ext_cfg_page_req32)
2384 #define	MPSIO_WRITE_CFG_PAGE32	_IOWR('M', 204, struct mps_cfg_page_req32)
2385 #define	MPSIO_RAID_ACTION32	_IOWR('M', 205, struct mps_raid_action32)
2386 #define	MPSIO_MPS_COMMAND32	_IOWR('M', 210, struct mps_usr_command32)
2387 
2388 static int
2389 mps_ioctl32(struct cdev *dev, u_long cmd32, void *_arg, int flag,
2390     struct thread *td)
2391 {
2392 	struct mps_cfg_page_req32 *page32 = _arg;
2393 	struct mps_ext_cfg_page_req32 *ext32 = _arg;
2394 	struct mps_raid_action32 *raid32 = _arg;
2395 	struct mps_usr_command32 *user32 = _arg;
2396 	union {
2397 		struct mps_cfg_page_req page;
2398 		struct mps_ext_cfg_page_req ext;
2399 		struct mps_raid_action raid;
2400 		struct mps_usr_command user;
2401 	} arg;
2402 	u_long cmd;
2403 	int error;
2404 
2405 	switch (cmd32) {
2406 	case MPSIO_READ_CFG_HEADER32:
2407 	case MPSIO_READ_CFG_PAGE32:
2408 	case MPSIO_WRITE_CFG_PAGE32:
2409 		if (cmd32 == MPSIO_READ_CFG_HEADER32)
2410 			cmd = MPSIO_READ_CFG_HEADER;
2411 		else if (cmd32 == MPSIO_READ_CFG_PAGE32)
2412 			cmd = MPSIO_READ_CFG_PAGE;
2413 		else
2414 			cmd = MPSIO_WRITE_CFG_PAGE;
2415 		CP(*page32, arg.page, header);
2416 		CP(*page32, arg.page, page_address);
2417 		PTRIN_CP(*page32, arg.page, buf);
2418 		CP(*page32, arg.page, len);
2419 		CP(*page32, arg.page, ioc_status);
2420 		break;
2421 
2422 	case MPSIO_READ_EXT_CFG_HEADER32:
2423 	case MPSIO_READ_EXT_CFG_PAGE32:
2424 		if (cmd32 == MPSIO_READ_EXT_CFG_HEADER32)
2425 			cmd = MPSIO_READ_EXT_CFG_HEADER;
2426 		else
2427 			cmd = MPSIO_READ_EXT_CFG_PAGE;
2428 		CP(*ext32, arg.ext, header);
2429 		CP(*ext32, arg.ext, page_address);
2430 		PTRIN_CP(*ext32, arg.ext, buf);
2431 		CP(*ext32, arg.ext, len);
2432 		CP(*ext32, arg.ext, ioc_status);
2433 		break;
2434 
2435 	case MPSIO_RAID_ACTION32:
2436 		cmd = MPSIO_RAID_ACTION;
2437 		CP(*raid32, arg.raid, action);
2438 		CP(*raid32, arg.raid, volume_bus);
2439 		CP(*raid32, arg.raid, volume_id);
2440 		CP(*raid32, arg.raid, phys_disk_num);
2441 		CP(*raid32, arg.raid, action_data_word);
2442 		PTRIN_CP(*raid32, arg.raid, buf);
2443 		CP(*raid32, arg.raid, len);
2444 		CP(*raid32, arg.raid, volume_status);
2445 		bcopy(raid32->action_data, arg.raid.action_data,
2446 		    sizeof arg.raid.action_data);
2447 		CP(*raid32, arg.raid, ioc_status);
2448 		CP(*raid32, arg.raid, write);
2449 		break;
2450 
2451 	case MPSIO_MPS_COMMAND32:
2452 		cmd = MPSIO_MPS_COMMAND;
2453 		PTRIN_CP(*user32, arg.user, req);
2454 		CP(*user32, arg.user, req_len);
2455 		PTRIN_CP(*user32, arg.user, rpl);
2456 		CP(*user32, arg.user, rpl_len);
2457 		PTRIN_CP(*user32, arg.user, buf);
2458 		CP(*user32, arg.user, len);
2459 		CP(*user32, arg.user, flags);
2460 		break;
2461 	default:
2462 		return (ENOIOCTL);
2463 	}
2464 
2465 	error = mps_ioctl(dev, cmd, &arg, flag, td);
2466 	if (error == 0 && (cmd32 & IOC_OUT) != 0) {
2467 		switch (cmd32) {
2468 		case MPSIO_READ_CFG_HEADER32:
2469 		case MPSIO_READ_CFG_PAGE32:
2470 		case MPSIO_WRITE_CFG_PAGE32:
2471 			CP(arg.page, *page32, header);
2472 			CP(arg.page, *page32, page_address);
2473 			PTROUT_CP(arg.page, *page32, buf);
2474 			CP(arg.page, *page32, len);
2475 			CP(arg.page, *page32, ioc_status);
2476 			break;
2477 
2478 		case MPSIO_READ_EXT_CFG_HEADER32:
2479 		case MPSIO_READ_EXT_CFG_PAGE32:
2480 			CP(arg.ext, *ext32, header);
2481 			CP(arg.ext, *ext32, page_address);
2482 			PTROUT_CP(arg.ext, *ext32, buf);
2483 			CP(arg.ext, *ext32, len);
2484 			CP(arg.ext, *ext32, ioc_status);
2485 			break;
2486 
2487 		case MPSIO_RAID_ACTION32:
2488 			CP(arg.raid, *raid32, action);
2489 			CP(arg.raid, *raid32, volume_bus);
2490 			CP(arg.raid, *raid32, volume_id);
2491 			CP(arg.raid, *raid32, phys_disk_num);
2492 			CP(arg.raid, *raid32, action_data_word);
2493 			PTROUT_CP(arg.raid, *raid32, buf);
2494 			CP(arg.raid, *raid32, len);
2495 			CP(arg.raid, *raid32, volume_status);
2496 			bcopy(arg.raid.action_data, raid32->action_data,
2497 			    sizeof arg.raid.action_data);
2498 			CP(arg.raid, *raid32, ioc_status);
2499 			CP(arg.raid, *raid32, write);
2500 			break;
2501 
2502 		case MPSIO_MPS_COMMAND32:
2503 			PTROUT_CP(arg.user, *user32, req);
2504 			CP(arg.user, *user32, req_len);
2505 			PTROUT_CP(arg.user, *user32, rpl);
2506 			CP(arg.user, *user32, rpl_len);
2507 			PTROUT_CP(arg.user, *user32, buf);
2508 			CP(arg.user, *user32, len);
2509 			CP(arg.user, *user32, flags);
2510 			break;
2511 		}
2512 	}
2513 
2514 	return (error);
2515 }
2516 #endif /* COMPAT_FREEBSD32 */
2517 
2518 static int
2519 mps_ioctl_devsw(struct cdev *dev, u_long com, caddr_t arg, int flag,
2520     struct thread *td)
2521 {
2522 #ifdef COMPAT_FREEBSD32
2523 	if (SV_CURPROC_FLAG(SV_ILP32))
2524 		return (mps_ioctl32(dev, com, arg, flag, td));
2525 #endif
2526 	return (mps_ioctl(dev, com, arg, flag, td));
2527 }
2528