1 /*
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020-2023, Broadcom Inc. All rights reserved.
5 * Support: <fbsd-storage-driver.pdl@broadcom.com>
6 *
7 * Authors: Sumit Saxena <sumit.saxena@broadcom.com>
8 * Chandrakanth Patil <chandrakanth.patil@broadcom.com>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are
12 * met:
13 *
14 * 1. Redistributions of source code must retain the above copyright notice,
15 * this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright notice,
17 * this list of conditions and the following disclaimer in the documentation and/or other
18 * materials provided with the distribution.
19 * 3. Neither the name of the Broadcom Inc. nor the names of its contributors
20 * may be used to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 *
35 * The views and conclusions contained in the software and documentation are
36 * those of the authors and should not be interpreted as representing
37 * official policies,either expressed or implied, of the FreeBSD Project.
38 *
39 * Mail to: Broadcom Inc 1320 Ridder Park Dr, San Jose, CA 95131
40 *
41 * Broadcom Inc. (Broadcom) MPI3MR Adapter FreeBSD
42 */
43
44 #include <sys/param.h>
45 #include <sys/proc.h>
46 #include <cam/cam.h>
47 #include <cam/cam_ccb.h>
48 #include "mpi3mr_cam.h"
49 #include "mpi3mr_app.h"
50 #include "mpi3mr.h"
51
52 static d_open_t mpi3mr_open;
53 static d_close_t mpi3mr_close;
54 static d_ioctl_t mpi3mr_ioctl;
55 static d_poll_t mpi3mr_poll;
56
57 static struct cdevsw mpi3mr_cdevsw = {
58 .d_version = D_VERSION,
59 .d_flags = 0,
60 .d_open = mpi3mr_open,
61 .d_close = mpi3mr_close,
62 .d_ioctl = mpi3mr_ioctl,
63 .d_poll = mpi3mr_poll,
64 .d_name = "mpi3mr",
65 };
66
67 static struct mpi3mr_mgmt_info mpi3mr_mgmt_info;
68
69 static int
mpi3mr_open(struct cdev * dev,int flags,int fmt,struct thread * td)70 mpi3mr_open(struct cdev *dev, int flags, int fmt, struct thread *td)
71 {
72
73 return (0);
74 }
75
76 static int
mpi3mr_close(struct cdev * dev,int flags,int fmt,struct thread * td)77 mpi3mr_close(struct cdev *dev, int flags, int fmt, struct thread *td)
78 {
79
80 return (0);
81 }
82
83 /*
84 * mpi3mr_app_attach - Char device registration
85 * @sc: Adapter reference
86 *
87 * This function does char device registration.
88 *
89 * Return: 0 on success and proper error codes on failure
90 */
91 int
mpi3mr_app_attach(struct mpi3mr_softc * sc)92 mpi3mr_app_attach(struct mpi3mr_softc *sc)
93 {
94
95 /* Create a /dev entry for Avenger controller */
96 sc->mpi3mr_cdev = make_dev(&mpi3mr_cdevsw, device_get_unit(sc->mpi3mr_dev),
97 UID_ROOT, GID_OPERATOR, 0640, "mpi3mr%d",
98 device_get_unit(sc->mpi3mr_dev));
99
100 if (sc->mpi3mr_cdev == NULL)
101 return (ENOMEM);
102
103 sc->mpi3mr_cdev->si_drv1 = sc;
104
105 /* Assign controller instance to mgmt_info structure */
106 if (device_get_unit(sc->mpi3mr_dev) == 0)
107 memset(&mpi3mr_mgmt_info, 0, sizeof(mpi3mr_mgmt_info));
108 mpi3mr_mgmt_info.count++;
109 mpi3mr_mgmt_info.sc_ptr[mpi3mr_mgmt_info.max_index] = sc;
110 mpi3mr_mgmt_info.max_index++;
111
112 return (0);
113 }
114
115 void
mpi3mr_app_detach(struct mpi3mr_softc * sc)116 mpi3mr_app_detach(struct mpi3mr_softc *sc)
117 {
118 U8 i = 0;
119
120 if (sc->mpi3mr_cdev == NULL)
121 return;
122
123 destroy_dev(sc->mpi3mr_cdev);
124 for (i = 0; i < mpi3mr_mgmt_info.max_index; i++) {
125 if (mpi3mr_mgmt_info.sc_ptr[i] == sc) {
126 mpi3mr_mgmt_info.count--;
127 mpi3mr_mgmt_info.sc_ptr[i] = NULL;
128 break;
129 }
130 }
131 return;
132 }
133
134 static int
mpi3mr_poll(struct cdev * dev,int poll_events,struct thread * td)135 mpi3mr_poll(struct cdev *dev, int poll_events, struct thread *td)
136 {
137 int revents = 0;
138 struct mpi3mr_softc *sc = NULL;
139 sc = dev->si_drv1;
140
141 if ((poll_events & (POLLIN | POLLRDNORM)) &&
142 (sc->mpi3mr_aen_triggered))
143 revents |= poll_events & (POLLIN | POLLRDNORM);
144
145 if (revents == 0) {
146 if (poll_events & (POLLIN | POLLRDNORM)) {
147 sc->mpi3mr_poll_waiting = 1;
148 selrecord(td, &sc->mpi3mr_select);
149 }
150 }
151 return revents;
152 }
153
154 /**
155 * mpi3mr_app_get_adp_instancs - Get Adapter instance
156 * @mrioc_id: Adapter ID
157 *
158 * This fucnction searches the Adapter reference with mrioc_id
159 * upon found, returns the adapter reference otherwise returns
160 * the NULL
161 *
162 * Return: Adapter reference on success and NULL on failure
163 */
164 static struct mpi3mr_softc *
mpi3mr_app_get_adp_instance(U8 mrioc_id)165 mpi3mr_app_get_adp_instance(U8 mrioc_id)
166 {
167 struct mpi3mr_softc *sc = NULL;
168
169 if (mrioc_id >= mpi3mr_mgmt_info.max_index)
170 return NULL;
171
172 sc = mpi3mr_mgmt_info.sc_ptr[mrioc_id];
173 return sc;
174 }
175
176 static int
mpi3mr_app_construct_nvme_sgl(struct mpi3mr_softc * sc,Mpi3NVMeEncapsulatedRequest_t * nvme_encap_request,struct mpi3mr_ioctl_mpt_dma_buffer * dma_buffers,U8 bufcnt)177 mpi3mr_app_construct_nvme_sgl(struct mpi3mr_softc *sc,
178 Mpi3NVMeEncapsulatedRequest_t *nvme_encap_request,
179 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers, U8 bufcnt)
180 {
181 struct mpi3mr_nvme_pt_sge *nvme_sgl;
182 U64 sgl_dma;
183 U8 count;
184 U16 available_sges = 0, i;
185 U32 sge_element_size = sizeof(struct mpi3mr_nvme_pt_sge);
186 size_t length = 0;
187 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buff = dma_buffers;
188 U64 sgemod_mask = ((U64)((sc->facts.sge_mod_mask) <<
189 sc->facts.sge_mod_shift) << 32);
190 U64 sgemod_val = ((U64)(sc->facts.sge_mod_value) <<
191 sc->facts.sge_mod_shift) << 32;
192
193 U32 size;
194
195 nvme_sgl = (struct mpi3mr_nvme_pt_sge *)
196 ((U8 *)(nvme_encap_request->Command) + MPI3MR_NVME_CMD_SGL_OFFSET);
197
198 /*
199 * Not all commands require a data transfer. If no data, just return
200 * without constructing any SGL.
201 */
202 for (count = 0; count < bufcnt; count++, dma_buff++) {
203 if ((dma_buff->data_dir == MPI3MR_APP_DDI) ||
204 (dma_buff->data_dir == MPI3MR_APP_DDO)) {
205 length = dma_buff->kern_buf_len;
206 break;
207 }
208 }
209 if (!length || !dma_buff->num_dma_desc)
210 return 0;
211
212 if (dma_buff->num_dma_desc == 1) {
213 available_sges = 1;
214 goto build_sges;
215 }
216 sgl_dma = (U64)sc->ioctl_chain_sge.dma_addr;
217
218 if (sgl_dma & sgemod_mask) {
219 printf(IOCNAME "NVMe SGL address collides with SGEModifier\n",sc->name);
220 return -1;
221 }
222
223 sgl_dma &= ~sgemod_mask;
224 sgl_dma |= sgemod_val;
225
226 memset(sc->ioctl_chain_sge.addr, 0, sc->ioctl_chain_sge.size);
227 available_sges = sc->ioctl_chain_sge.size / sge_element_size;
228 if (available_sges < dma_buff->num_dma_desc)
229 return -1;
230 memset(nvme_sgl, 0, sizeof(struct mpi3mr_nvme_pt_sge));
231 nvme_sgl->base_addr = sgl_dma;
232 size = dma_buff->num_dma_desc * sizeof(struct mpi3mr_nvme_pt_sge);
233 nvme_sgl->length = htole32(size);
234 nvme_sgl->type = MPI3MR_NVMESGL_LAST_SEGMENT;
235
236 nvme_sgl = (struct mpi3mr_nvme_pt_sge *) sc->ioctl_chain_sge.addr;
237
238 build_sges:
239 for (i = 0; i < dma_buff->num_dma_desc; i++) {
240 sgl_dma = htole64(dma_buff->dma_desc[i].dma_addr);
241 if (sgl_dma & sgemod_mask) {
242 printf("%s: SGL address collides with SGE modifier\n",
243 __func__);
244 return -1;
245 }
246
247 sgl_dma &= ~sgemod_mask;
248 sgl_dma |= sgemod_val;
249
250 nvme_sgl->base_addr = sgl_dma;
251 nvme_sgl->length = htole32(dma_buff->dma_desc[i].size);
252 nvme_sgl->type = MPI3MR_NVMESGL_DATA_SEGMENT;
253 nvme_sgl++;
254 available_sges--;
255 }
256
257 return 0;
258 }
259
260 static int
mpi3mr_app_build_nvme_prp(struct mpi3mr_softc * sc,Mpi3NVMeEncapsulatedRequest_t * nvme_encap_request,struct mpi3mr_ioctl_mpt_dma_buffer * dma_buffers,U8 bufcnt)261 mpi3mr_app_build_nvme_prp(struct mpi3mr_softc *sc,
262 Mpi3NVMeEncapsulatedRequest_t *nvme_encap_request,
263 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers, U8 bufcnt)
264 {
265 int prp_size = MPI3MR_NVME_PRP_SIZE;
266 U64 *prp_entry, *prp1_entry, *prp2_entry;
267 U64 *prp_page;
268 bus_addr_t prp_entry_dma, prp_page_dma, dma_addr;
269 U32 offset, entry_len, dev_pgsz;
270 U32 page_mask_result, page_mask;
271 size_t length = 0, desc_len;
272 U8 count;
273 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buff = dma_buffers;
274 U64 sgemod_mask = ((U64)((sc->facts.sge_mod_mask) <<
275 sc->facts.sge_mod_shift) << 32);
276 U64 sgemod_val = ((U64)(sc->facts.sge_mod_value) <<
277 sc->facts.sge_mod_shift) << 32;
278 U16 dev_handle = nvme_encap_request->DevHandle;
279 struct mpi3mr_target *tgtdev;
280 U16 desc_count = 0;
281
282 tgtdev = mpi3mr_find_target_by_dev_handle(sc->cam_sc, dev_handle);
283 if (!tgtdev) {
284 printf(IOCNAME "EncapNVMe Error: Invalid DevHandle 0x%02x\n", sc->name,
285 dev_handle);
286 return -1;
287 }
288 if (tgtdev->dev_spec.pcie_inf.pgsz == 0) {
289 printf(IOCNAME "%s: NVME device page size is zero for handle 0x%04x\n",
290 sc->name, __func__, dev_handle);
291 return -1;
292 }
293 dev_pgsz = 1 << (tgtdev->dev_spec.pcie_inf.pgsz);
294
295 page_mask = dev_pgsz - 1;
296
297 if (dev_pgsz > MPI3MR_IOCTL_SGE_SIZE){
298 printf("%s: NVMe device page size(%d) is greater than ioctl data sge size(%d) for handle 0x%04x\n",
299 __func__, dev_pgsz, MPI3MR_IOCTL_SGE_SIZE, dev_handle);
300 return -1;
301 }
302
303 if (MPI3MR_IOCTL_SGE_SIZE % dev_pgsz){
304 printf("%s: ioctl data sge size(%d) is not a multiple of NVMe device page size(%d) for handle 0x%04x\n",
305 __func__, MPI3MR_IOCTL_SGE_SIZE, dev_pgsz, dev_handle);
306 return -1;
307 }
308
309 /*
310 * Not all commands require a data transfer. If no data, just return
311 * without constructing any PRP.
312 */
313 for (count = 0; count < bufcnt; count++, dma_buff++) {
314 if ((dma_buff->data_dir == MPI3MR_APP_DDI) ||
315 (dma_buff->data_dir == MPI3MR_APP_DDO)) {
316 length = dma_buff->kern_buf_len;
317 break;
318 }
319 }
320 if (!length || !dma_buff->num_dma_desc)
321 return 0;
322
323 for (count = 0; count < dma_buff->num_dma_desc; count++) {
324 dma_addr = dma_buff->dma_desc[count].dma_addr;
325 if (dma_addr & page_mask) {
326 printf("%s:dma_addr 0x%lu is not aligned with page size 0x%x\n",
327 __func__, dma_addr, dev_pgsz);
328 return -1;
329 }
330 }
331
332 dma_addr = dma_buff->dma_desc[0].dma_addr;
333 desc_len = dma_buff->dma_desc[0].size;
334
335 sc->nvme_encap_prp_sz = 0;
336 if (bus_dma_tag_create(sc->mpi3mr_parent_dmat, /* parent */
337 4, 0, /* algnmnt, boundary */
338 sc->dma_loaddr, /* lowaddr */
339 BUS_SPACE_MAXADDR, /* highaddr */
340 NULL, NULL, /* filter, filterarg */
341 dev_pgsz, /* maxsize */
342 1, /* nsegments */
343 dev_pgsz, /* maxsegsize */
344 0, /* flags */
345 NULL, NULL, /* lockfunc, lockarg */
346 &sc->nvme_encap_prp_list_dmatag)) {
347 mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot create ioctl NVME kernel buffer dma tag\n");
348 return (ENOMEM);
349 }
350
351 if (bus_dmamem_alloc(sc->nvme_encap_prp_list_dmatag, (void **)&sc->nvme_encap_prp_list,
352 BUS_DMA_NOWAIT, &sc->nvme_encap_prp_list_dma_dmamap)) {
353 mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot allocate ioctl NVME dma memory\n");
354 return (ENOMEM);
355 }
356
357 bzero(sc->nvme_encap_prp_list, dev_pgsz);
358 bus_dmamap_load(sc->nvme_encap_prp_list_dmatag, sc->nvme_encap_prp_list_dma_dmamap,
359 sc->nvme_encap_prp_list, dev_pgsz, mpi3mr_memaddr_cb, &sc->nvme_encap_prp_list_dma,
360 BUS_DMA_NOWAIT);
361
362 if (!sc->nvme_encap_prp_list) {
363 printf(IOCNAME "%s:%d Cannot load ioctl NVME dma memory for size: %d\n", sc->name,
364 __func__, __LINE__, dev_pgsz);
365 goto err_out;
366 }
367 sc->nvme_encap_prp_sz = dev_pgsz;
368
369 /*
370 * Set pointers to PRP1 and PRP2, which are in the NVMe command.
371 * PRP1 is located at a 24 byte offset from the start of the NVMe
372 * command. Then set the current PRP entry pointer to PRP1.
373 */
374 prp1_entry = (U64 *)((U8 *)(nvme_encap_request->Command) + MPI3MR_NVME_CMD_PRP1_OFFSET);
375 prp2_entry = (U64 *)((U8 *)(nvme_encap_request->Command) + MPI3MR_NVME_CMD_PRP2_OFFSET);
376 prp_entry = prp1_entry;
377 /*
378 * For the PRP entries, use the specially allocated buffer of
379 * contiguous memory.
380 */
381 prp_page = sc->nvme_encap_prp_list;
382 prp_page_dma = sc->nvme_encap_prp_list_dma;
383
384 /*
385 * Check if we are within 1 entry of a page boundary we don't
386 * want our first entry to be a PRP List entry.
387 */
388 page_mask_result = (uintptr_t)((U8 *)prp_page + prp_size) & page_mask;
389 if (!page_mask_result) {
390 printf(IOCNAME "PRP Page is not page aligned\n", sc->name);
391 goto err_out;
392 }
393
394 /*
395 * Set PRP physical pointer, which initially points to the current PRP
396 * DMA memory page.
397 */
398 prp_entry_dma = prp_page_dma;
399
400
401 /* Loop while the length is not zero. */
402 while (length) {
403 page_mask_result = (prp_entry_dma + prp_size) & page_mask;
404 if (!page_mask_result && (length > dev_pgsz)) {
405 printf(IOCNAME "Single PRP page is not sufficient\n", sc->name);
406 goto err_out;
407 }
408
409 /* Need to handle if entry will be part of a page. */
410 offset = dma_addr & page_mask;
411 entry_len = dev_pgsz - offset;
412
413 if (prp_entry == prp1_entry) {
414 /*
415 * Must fill in the first PRP pointer (PRP1) before
416 * moving on.
417 */
418 *prp1_entry = dma_addr;
419 if (*prp1_entry & sgemod_mask) {
420 printf(IOCNAME "PRP1 address collides with SGEModifier\n", sc->name);
421 goto err_out;
422 }
423 *prp1_entry &= ~sgemod_mask;
424 *prp1_entry |= sgemod_val;
425
426 /*
427 * Now point to the second PRP entry within the
428 * command (PRP2).
429 */
430 prp_entry = prp2_entry;
431 } else if (prp_entry == prp2_entry) {
432 /*
433 * Should the PRP2 entry be a PRP List pointer or just
434 * a regular PRP pointer? If there is more than one
435 * more page of data, must use a PRP List pointer.
436 */
437 if (length > dev_pgsz) {
438 /*
439 * PRP2 will contain a PRP List pointer because
440 * more PRP's are needed with this command. The
441 * list will start at the beginning of the
442 * contiguous buffer.
443 */
444 *prp2_entry = prp_entry_dma;
445 if (*prp2_entry & sgemod_mask) {
446 printf(IOCNAME "PRP list address collides with SGEModifier\n", sc->name);
447 goto err_out;
448 }
449 *prp2_entry &= ~sgemod_mask;
450 *prp2_entry |= sgemod_val;
451
452 /*
453 * The next PRP Entry will be the start of the
454 * first PRP List.
455 */
456 prp_entry = prp_page;
457 continue;
458 } else {
459 /*
460 * After this, the PRP Entries are complete.
461 * This command uses 2 PRP's and no PRP list.
462 */
463 *prp2_entry = dma_addr;
464 if (*prp2_entry & sgemod_mask) {
465 printf(IOCNAME "PRP2 address collides with SGEModifier\n", sc->name);
466 goto err_out;
467 }
468 *prp2_entry &= ~sgemod_mask;
469 *prp2_entry |= sgemod_val;
470 }
471 } else {
472 /*
473 * Put entry in list and bump the addresses.
474 *
475 * After PRP1 and PRP2 are filled in, this will fill in
476 * all remaining PRP entries in a PRP List, one per
477 * each time through the loop.
478 */
479 *prp_entry = dma_addr;
480 if (*prp_entry & sgemod_mask) {
481 printf(IOCNAME "PRP address collides with SGEModifier\n", sc->name);
482 goto err_out;
483 }
484 *prp_entry &= ~sgemod_mask;
485 *prp_entry |= sgemod_val;
486 prp_entry++;
487 prp_entry_dma += prp_size;
488 }
489
490 /* Decrement length accounting for last partial page. */
491 if (entry_len >= length)
492 length = 0;
493 else {
494 if (entry_len <= desc_len) {
495 dma_addr += entry_len;
496 desc_len -= entry_len;
497 }
498 if (!desc_len) {
499 if ((++desc_count) >=
500 dma_buff->num_dma_desc) {
501 printf("%s: Invalid len %ld while building PRP\n",
502 __func__, length);
503 goto err_out;
504 }
505 dma_addr =
506 dma_buff->dma_desc[desc_count].dma_addr;
507 desc_len =
508 dma_buff->dma_desc[desc_count].size;
509 }
510 length -= entry_len;
511 }
512 }
513 return 0;
514 err_out:
515 if (sc->nvme_encap_prp_list && sc->nvme_encap_prp_list_dma) {
516 bus_dmamap_unload(sc->nvme_encap_prp_list_dmatag, sc->nvme_encap_prp_list_dma_dmamap);
517 bus_dmamem_free(sc->nvme_encap_prp_list_dmatag, sc->nvme_encap_prp_list, sc->nvme_encap_prp_list_dma_dmamap);
518 bus_dma_tag_destroy(sc->nvme_encap_prp_list_dmatag);
519 sc->nvme_encap_prp_list = NULL;
520 }
521 return -1;
522 }
523
524 /**
525 + * mpi3mr_map_data_buffer_dma - build dma descriptors for data
526 + * buffers
527 + * @sc: Adapter instance reference
528 + * @dma_buff: buffer map descriptor
529 + * @desc_count: Number of already consumed dma descriptors
530 + *
531 + * This function computes how many pre-allocated DMA descriptors
532 + * are required for the given data buffer and if those number of
533 + * descriptors are free, then setup the mapping of the scattered
534 + * DMA address to the given data buffer, if the data direction
535 + * of the buffer is DATA_OUT then the actual data is copied to
536 + * the DMA buffers
537 + *
538 + * Return: 0 on success, -1 on failure
539 + */
mpi3mr_map_data_buffer_dma(struct mpi3mr_softc * sc,struct mpi3mr_ioctl_mpt_dma_buffer * dma_buffers,U8 desc_count)540 static int mpi3mr_map_data_buffer_dma(struct mpi3mr_softc *sc,
541 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers,
542 U8 desc_count)
543 {
544 U16 i, needed_desc = (dma_buffers->kern_buf_len / MPI3MR_IOCTL_SGE_SIZE);
545 U32 buf_len = dma_buffers->kern_buf_len, copied_len = 0;
546 int error;
547
548 if (dma_buffers->kern_buf_len % MPI3MR_IOCTL_SGE_SIZE)
549 needed_desc++;
550
551 if ((needed_desc + desc_count) > MPI3MR_NUM_IOCTL_SGE) {
552 printf("%s: DMA descriptor mapping error %d:%d:%d\n",
553 __func__, needed_desc, desc_count, MPI3MR_NUM_IOCTL_SGE);
554 return -1;
555 }
556
557 dma_buffers->dma_desc = malloc(sizeof(*dma_buffers->dma_desc) * needed_desc,
558 M_MPI3MR, M_NOWAIT | M_ZERO);
559 if (!dma_buffers->dma_desc)
560 return -1;
561
562 error = 0;
563 for (i = 0; i < needed_desc; i++, desc_count++) {
564
565 dma_buffers->dma_desc[i].addr = sc->ioctl_sge[desc_count].addr;
566 dma_buffers->dma_desc[i].dma_addr = sc->ioctl_sge[desc_count].dma_addr;
567
568 if (buf_len < sc->ioctl_sge[desc_count].size)
569 dma_buffers->dma_desc[i].size = buf_len;
570 else
571 dma_buffers->dma_desc[i].size = sc->ioctl_sge[desc_count].size;
572
573 buf_len -= dma_buffers->dma_desc[i].size;
574 memset(dma_buffers->dma_desc[i].addr, 0, sc->ioctl_sge[desc_count].size);
575
576 if (dma_buffers->data_dir == MPI3MR_APP_DDO) {
577 error = copyin(((U8 *)dma_buffers->user_buf + copied_len),
578 dma_buffers->dma_desc[i].addr,
579 dma_buffers->dma_desc[i].size);
580 if (error != 0)
581 break;
582 copied_len += dma_buffers->dma_desc[i].size;
583 }
584 }
585 if (error != 0) {
586 printf("%s: DMA copyin error %d\n", __func__, error);
587 free(dma_buffers->dma_desc, M_MPI3MR);
588 return -1;
589 }
590
591 dma_buffers->num_dma_desc = needed_desc;
592
593 return 0;
594 }
595
596 static unsigned int
mpi3mr_app_get_nvme_data_fmt(Mpi3NVMeEncapsulatedRequest_t * nvme_encap_request)597 mpi3mr_app_get_nvme_data_fmt(Mpi3NVMeEncapsulatedRequest_t *nvme_encap_request)
598 {
599 U8 format = 0;
600
601 format = ((nvme_encap_request->Command[0] & 0xc000) >> 14);
602 return format;
603 }
604
mpi3mr_total_num_ioctl_sges(struct mpi3mr_ioctl_mpt_dma_buffer * dma_buffers,U8 bufcnt)605 static inline U16 mpi3mr_total_num_ioctl_sges(struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers,
606 U8 bufcnt)
607 {
608 U16 i, sge_count = 0;
609 for (i=0; i < bufcnt; i++, dma_buffers++) {
610 if ((dma_buffers->data_dir == MPI3MR_APP_DDN) ||
611 dma_buffers->kern_buf)
612 continue;
613 sge_count += dma_buffers->num_dma_desc;
614 if (!dma_buffers->num_dma_desc)
615 sge_count++;
616 }
617 return sge_count;
618 }
619
620 static int
mpi3mr_app_construct_sgl(struct mpi3mr_softc * sc,U8 * mpi_request,U32 sgl_offset,struct mpi3mr_ioctl_mpt_dma_buffer * dma_buffers,U8 bufcnt,U8 is_rmc,U8 is_rmr,U8 num_datasges)621 mpi3mr_app_construct_sgl(struct mpi3mr_softc *sc, U8 *mpi_request, U32 sgl_offset,
622 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers,
623 U8 bufcnt, U8 is_rmc, U8 is_rmr, U8 num_datasges)
624 {
625 U8 *sgl = (mpi_request + sgl_offset), count = 0;
626 Mpi3RequestHeader_t *mpi_header = (Mpi3RequestHeader_t *)mpi_request;
627 Mpi3MgmtPassthroughRequest_t *rmgmt_req =
628 (Mpi3MgmtPassthroughRequest_t *)mpi_request;
629 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buff = dma_buffers;
630 U8 flag, sgl_flags, sgl_flags_eob, sgl_flags_last, last_chain_sgl_flags;
631 U16 available_sges, i, sges_needed;
632 U32 sge_element_size = sizeof(struct _MPI3_SGE_COMMON);
633 bool chain_used = false;
634
635 sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
636 MPI3_SGE_FLAGS_DLAS_SYSTEM ;
637 sgl_flags_eob = sgl_flags | MPI3_SGE_FLAGS_END_OF_BUFFER;
638 sgl_flags_last = sgl_flags_eob | MPI3_SGE_FLAGS_END_OF_LIST;
639 last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
640 MPI3_SGE_FLAGS_DLAS_SYSTEM;
641
642 sges_needed = mpi3mr_total_num_ioctl_sges(dma_buffers, bufcnt);
643
644 if (is_rmc) {
645 mpi3mr_add_sg_single(&rmgmt_req->CommandSGL,
646 sgl_flags_last, dma_buff->kern_buf_len,
647 dma_buff->kern_buf_dma);
648 sgl = (U8 *) dma_buff->kern_buf + dma_buff->user_buf_len;
649 available_sges = (dma_buff->kern_buf_len -
650 dma_buff->user_buf_len) / sge_element_size;
651 if (sges_needed > available_sges)
652 return -1;
653 chain_used = true;
654 dma_buff++;
655 count++;
656 if (is_rmr) {
657 mpi3mr_add_sg_single(&rmgmt_req->ResponseSGL,
658 sgl_flags_last, dma_buff->kern_buf_len,
659 dma_buff->kern_buf_dma);
660 dma_buff++;
661 count++;
662 } else
663 mpi3mr_build_zero_len_sge(
664 &rmgmt_req->ResponseSGL);
665 if (num_datasges) {
666 i = 0;
667 goto build_sges;
668 }
669 } else {
670 if (sgl_offset >= MPI3MR_AREQ_FRAME_SZ)
671 return -1;
672 available_sges = (MPI3MR_AREQ_FRAME_SZ - sgl_offset) /
673 sge_element_size;
674 if (!available_sges)
675 return -1;
676 }
677
678 if (!num_datasges) {
679 mpi3mr_build_zero_len_sge(sgl);
680 return 0;
681 }
682
683 if (mpi_header->Function == MPI3_FUNCTION_SMP_PASSTHROUGH) {
684 if ((sges_needed > 2) || (sges_needed > available_sges))
685 return -1;
686 for (; count < bufcnt; count++, dma_buff++) {
687 if ((dma_buff->data_dir == MPI3MR_APP_DDN) ||
688 !dma_buff->num_dma_desc)
689 continue;
690 mpi3mr_add_sg_single(sgl, sgl_flags_last,
691 dma_buff->dma_desc[0].size,
692 dma_buff->dma_desc[0].dma_addr);
693 sgl += sge_element_size;
694 }
695 return 0;
696 }
697 i = 0;
698
699 build_sges:
700 for (; count < bufcnt; count++, dma_buff++) {
701 if (dma_buff->data_dir == MPI3MR_APP_DDN)
702 continue;
703 if (!dma_buff->num_dma_desc) {
704 if (chain_used && !available_sges)
705 return -1;
706 if (!chain_used && (available_sges == 1) &&
707 (sges_needed > 1))
708 goto setup_chain;
709 flag = sgl_flags_eob;
710 if (num_datasges == 1)
711 flag = sgl_flags_last;
712 mpi3mr_add_sg_single(sgl, flag, 0, 0);
713 sgl += sge_element_size;
714 available_sges--;
715 sges_needed--;
716 num_datasges--;
717 continue;
718 }
719 for (; i < dma_buff->num_dma_desc; i++) {
720 if (chain_used && !available_sges)
721 return -1;
722 if (!chain_used && (available_sges == 1) &&
723 (sges_needed > 1))
724 goto setup_chain;
725 flag = sgl_flags;
726 if (i == (dma_buff->num_dma_desc - 1)) {
727 if (num_datasges == 1)
728 flag = sgl_flags_last;
729 else
730 flag = sgl_flags_eob;
731 }
732
733 mpi3mr_add_sg_single(sgl, flag,
734 dma_buff->dma_desc[i].size,
735 dma_buff->dma_desc[i].dma_addr);
736 sgl += sge_element_size;
737 available_sges--;
738 sges_needed--;
739 }
740 num_datasges--;
741 i = 0;
742 }
743 return 0;
744
745 setup_chain:
746 available_sges = sc->ioctl_chain_sge.size / sge_element_size;
747 if (sges_needed > available_sges)
748 return -1;
749 mpi3mr_add_sg_single(sgl, last_chain_sgl_flags,
750 (sges_needed * sge_element_size), sc->ioctl_chain_sge.dma_addr);
751 memset(sc->ioctl_chain_sge.addr, 0, sc->ioctl_chain_sge.size);
752 sgl = (U8 *)sc->ioctl_chain_sge.addr;
753 chain_used = true;
754 goto build_sges;
755 }
756
757
758 /**
759 * mpi3mr_app_mptcmds - MPI Pass through IOCTL handler
760 * @dev: char device
761 * @cmd: IOCTL command
762 * @arg: User data payload buffer for the IOCTL
763 * @flag: flags
764 * @thread: threads
765 *
766 * This function is the top level handler for MPI Pass through
767 * IOCTL, this does basic validation of the input data buffers,
768 * identifies the given buffer types and MPI command, allocates
769 * DMAable memory for user given buffers, construstcs SGL
770 * properly and passes the command to the firmware.
771 *
772 * Once the MPI command is completed the driver copies the data
773 * if any and reply, sense information to user provided buffers.
774 * If the command is timed out then issues controller reset
775 * prior to returning.
776 *
777 * Return: 0 on success and proper error codes on failure
778 */
779 static long
mpi3mr_app_mptcmds(struct cdev * dev,u_long cmd,void * uarg,int flag,struct thread * td)780 mpi3mr_app_mptcmds(struct cdev *dev, u_long cmd, void *uarg,
781 int flag, struct thread *td)
782 {
783 long rval = EINVAL;
784 U8 count, bufcnt = 0, is_rmcb = 0, is_rmrb = 0, din_cnt = 0, dout_cnt = 0;
785 U8 invalid_be = 0, erb_offset = 0xFF, mpirep_offset = 0xFF;
786 U16 desc_count = 0;
787 U8 nvme_fmt = 0;
788 U32 tmplen = 0, erbsz = MPI3MR_SENSEBUF_SZ, din_sz = 0, dout_sz = 0;
789 U8 *kern_erb = NULL;
790 U8 *mpi_request = NULL;
791 Mpi3RequestHeader_t *mpi_header = NULL;
792 Mpi3PELReqActionGetCount_t *pel = NULL;
793 Mpi3StatusReplyDescriptor_t *status_desc = NULL;
794 struct mpi3mr_softc *sc = NULL;
795 struct mpi3mr_ioctl_buf_entry_list *buffer_list = NULL;
796 struct mpi3mr_buf_entry *buf_entries = NULL;
797 struct mpi3mr_ioctl_mpt_dma_buffer *dma_buffers = NULL, *dma_buff = NULL;
798 struct mpi3mr_ioctl_mpirepbuf *mpirepbuf = NULL;
799 struct mpi3mr_ioctl_mptcmd *karg = (struct mpi3mr_ioctl_mptcmd *)uarg;
800
801
802 sc = mpi3mr_app_get_adp_instance(karg->mrioc_id);
803 if (!sc)
804 return ENODEV;
805
806 if (!sc->ioctl_sges_allocated) {
807 printf("%s: DMA memory was not allocated\n", __func__);
808 return ENOMEM;
809 }
810
811 if (karg->timeout < MPI3MR_IOCTL_DEFAULT_TIMEOUT)
812 karg->timeout = MPI3MR_IOCTL_DEFAULT_TIMEOUT;
813
814 if (!karg->mpi_msg_size || !karg->buf_entry_list_size) {
815 printf(IOCNAME "%s:%d Invalid IOCTL parameters passed\n", sc->name,
816 __func__, __LINE__);
817 return rval;
818 }
819 if ((karg->mpi_msg_size * 4) > MPI3MR_AREQ_FRAME_SZ) {
820 printf(IOCNAME "%s:%d Invalid IOCTL parameters passed\n", sc->name,
821 __func__, __LINE__);
822 return rval;
823 }
824
825 mpi_request = malloc(MPI3MR_AREQ_FRAME_SZ, M_MPI3MR, M_NOWAIT | M_ZERO);
826 if (!mpi_request) {
827 printf(IOCNAME "%s: memory allocation failed for mpi_request\n", sc->name,
828 __func__);
829 return ENOMEM;
830 }
831
832 mpi_header = (Mpi3RequestHeader_t *)mpi_request;
833 pel = (Mpi3PELReqActionGetCount_t *)mpi_request;
834 if (copyin(karg->mpi_msg_buf, mpi_request, (karg->mpi_msg_size * 4))) {
835 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
836 __FILE__, __LINE__, __func__);
837 rval = EFAULT;
838 goto out;
839 }
840
841 buffer_list = malloc(karg->buf_entry_list_size, M_MPI3MR, M_NOWAIT | M_ZERO);
842 if (!buffer_list) {
843 printf(IOCNAME "%s: memory allocation failed for buffer_list\n", sc->name,
844 __func__);
845 rval = ENOMEM;
846 goto out;
847 }
848 if (copyin(karg->buf_entry_list, buffer_list, karg->buf_entry_list_size)) {
849 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
850 __FILE__, __LINE__, __func__);
851 rval = EFAULT;
852 goto out;
853 }
854 if (!buffer_list->num_of_buf_entries) {
855 printf(IOCNAME "%s:%d Invalid IOCTL parameters passed\n", sc->name,
856 __func__, __LINE__);
857 rval = EINVAL;
858 goto out;
859 }
860 bufcnt = buffer_list->num_of_buf_entries;
861 dma_buffers = malloc((sizeof(*dma_buffers) * bufcnt), M_MPI3MR, M_NOWAIT | M_ZERO);
862 if (!dma_buffers) {
863 printf(IOCNAME "%s: memory allocation failed for dma_buffers\n", sc->name,
864 __func__);
865 rval = ENOMEM;
866 goto out;
867 }
868 buf_entries = buffer_list->buf_entry;
869 dma_buff = dma_buffers;
870 for (count = 0; count < bufcnt; count++, buf_entries++, dma_buff++) {
871 memset(dma_buff, 0, sizeof(*dma_buff));
872 dma_buff->user_buf = buf_entries->buffer;
873 dma_buff->user_buf_len = buf_entries->buf_len;
874
875 switch (buf_entries->buf_type) {
876 case MPI3MR_IOCTL_BUFTYPE_RAIDMGMT_CMD:
877 is_rmcb = 1;
878 if ((count != 0) || !buf_entries->buf_len)
879 invalid_be = 1;
880 dma_buff->data_dir = MPI3MR_APP_DDO;
881 break;
882 case MPI3MR_IOCTL_BUFTYPE_RAIDMGMT_RESP:
883 is_rmrb = 1;
884 if (count != 1 || !is_rmcb || !buf_entries->buf_len)
885 invalid_be = 1;
886 dma_buff->data_dir = MPI3MR_APP_DDI;
887 break;
888 case MPI3MR_IOCTL_BUFTYPE_DATA_IN:
889 din_sz = dma_buff->user_buf_len;
890 din_cnt++;
891 if ((din_cnt > 1) && !is_rmcb)
892 invalid_be = 1;
893 dma_buff->data_dir = MPI3MR_APP_DDI;
894 break;
895 case MPI3MR_IOCTL_BUFTYPE_DATA_OUT:
896 dout_sz = dma_buff->user_buf_len;
897 dout_cnt++;
898 if ((dout_cnt > 1) && !is_rmcb)
899 invalid_be = 1;
900 dma_buff->data_dir = MPI3MR_APP_DDO;
901 break;
902 case MPI3MR_IOCTL_BUFTYPE_MPI_REPLY:
903 mpirep_offset = count;
904 dma_buff->data_dir = MPI3MR_APP_DDN;
905 if (!buf_entries->buf_len)
906 invalid_be = 1;
907 break;
908 case MPI3MR_IOCTL_BUFTYPE_ERR_RESPONSE:
909 erb_offset = count;
910 dma_buff->data_dir = MPI3MR_APP_DDN;
911 if (!buf_entries->buf_len)
912 invalid_be = 1;
913 break;
914 default:
915 invalid_be = 1;
916 break;
917 }
918 if (invalid_be)
919 break;
920 }
921 if (invalid_be) {
922 printf(IOCNAME "%s:%d Invalid IOCTL parameters passed\n", sc->name,
923 __func__, __LINE__);
924 rval = EINVAL;
925 goto out;
926 }
927
928 if (is_rmcb && ((din_sz + dout_sz) > MPI3MR_MAX_IOCTL_TRANSFER_SIZE)) {
929 printf("%s:%d: invalid data transfer size passed for function 0x%x"
930 "din_sz = %d, dout_size = %d\n", __func__, __LINE__,
931 mpi_header->Function, din_sz, dout_sz);
932 rval = EINVAL;
933 goto out;
934 }
935
936 if ((din_sz > MPI3MR_MAX_IOCTL_TRANSFER_SIZE) ||
937 (dout_sz > MPI3MR_MAX_IOCTL_TRANSFER_SIZE)) {
938 printf("%s:%d: invalid data transfer size passed for function 0x%x"
939 "din_size=%d dout_size=%d\n", __func__, __LINE__,
940 mpi_header->Function, din_sz, dout_sz);
941 rval = EINVAL;
942 goto out;
943 }
944
945 if (mpi_header->Function == MPI3_FUNCTION_SMP_PASSTHROUGH) {
946 if ((din_sz > MPI3MR_IOCTL_SGE_SIZE) ||
947 (dout_sz > MPI3MR_IOCTL_SGE_SIZE)) {
948 printf("%s:%d: invalid message size passed:%d:%d:%d:%d\n",
949 __func__, __LINE__, din_cnt, dout_cnt, din_sz, dout_sz);
950 rval = EINVAL;
951 goto out;
952 }
953 }
954
955 dma_buff = dma_buffers;
956 for (count = 0; count < bufcnt; count++, dma_buff++) {
957
958 dma_buff->kern_buf_len = dma_buff->user_buf_len;
959
960 if (is_rmcb && !count) {
961 dma_buff->kern_buf = sc->ioctl_chain_sge.addr;
962 dma_buff->kern_buf_len = sc->ioctl_chain_sge.size;
963 dma_buff->kern_buf_dma = sc->ioctl_chain_sge.dma_addr;
964 dma_buff->dma_desc = NULL;
965 dma_buff->num_dma_desc = 0;
966 memset(dma_buff->kern_buf, 0, dma_buff->kern_buf_len);
967 tmplen = min(dma_buff->kern_buf_len, dma_buff->user_buf_len);
968 if (copyin(dma_buff->user_buf, dma_buff->kern_buf, tmplen)) {
969 mpi3mr_dprint(sc, MPI3MR_ERROR, "failure at %s() line: %d",
970 __func__, __LINE__);
971 rval = EFAULT;
972 goto out;
973 }
974 } else if (is_rmrb && (count == 1)) {
975 dma_buff->kern_buf = sc->ioctl_resp_sge.addr;
976 dma_buff->kern_buf_len = sc->ioctl_resp_sge.size;
977 dma_buff->kern_buf_dma = sc->ioctl_resp_sge.dma_addr;
978 dma_buff->dma_desc = NULL;
979 dma_buff->num_dma_desc = 0;
980 memset(dma_buff->kern_buf, 0, dma_buff->kern_buf_len);
981 tmplen = min(dma_buff->kern_buf_len, dma_buff->user_buf_len);
982 dma_buff->kern_buf_len = tmplen;
983 } else {
984 if (!dma_buff->kern_buf_len)
985 continue;
986 if (mpi3mr_map_data_buffer_dma(sc, dma_buff, desc_count)) {
987 rval = ENOMEM;
988 mpi3mr_dprint(sc, MPI3MR_ERROR, "mapping data buffers failed"
989 "at %s() line: %d\n", __func__, __LINE__);
990 goto out;
991 }
992 desc_count += dma_buff->num_dma_desc;
993 }
994 }
995
996 if (erb_offset != 0xFF) {
997 kern_erb = malloc(erbsz, M_MPI3MR, M_NOWAIT | M_ZERO);
998 if (!kern_erb) {
999 printf(IOCNAME "%s:%d Cannot allocate memory for sense buffer\n", sc->name,
1000 __func__, __LINE__);
1001 rval = ENOMEM;
1002 goto out;
1003 }
1004 }
1005
1006 if (sc->ioctl_cmds.state & MPI3MR_CMD_PENDING) {
1007 printf(IOCNAME "Issue IOCTL: Ioctl command is in use/previous command is pending\n",
1008 sc->name);
1009 rval = EAGAIN;
1010 goto out;
1011 }
1012
1013 if (sc->unrecoverable) {
1014 printf(IOCNAME "Issue IOCTL: controller is in unrecoverable state\n", sc->name);
1015 rval = EFAULT;
1016 goto out;
1017 }
1018
1019 if (sc->reset_in_progress) {
1020 printf(IOCNAME "Issue IOCTL: reset in progress\n", sc->name);
1021 rval = EAGAIN;
1022 goto out;
1023 }
1024 if (sc->block_ioctls) {
1025 printf(IOCNAME "Issue IOCTL: IOCTLs are blocked\n", sc->name);
1026 rval = EAGAIN;
1027 goto out;
1028 }
1029
1030 if (mpi_header->Function != MPI3_FUNCTION_NVME_ENCAPSULATED) {
1031 if (mpi3mr_app_construct_sgl(sc, mpi_request, (karg->mpi_msg_size * 4), dma_buffers,
1032 bufcnt, is_rmcb, is_rmrb, (dout_cnt + din_cnt))) {
1033 printf(IOCNAME "Issue IOCTL: sgl build failed\n", sc->name);
1034 rval = EAGAIN;
1035 goto out;
1036 }
1037
1038 } else {
1039 nvme_fmt = mpi3mr_app_get_nvme_data_fmt(
1040 (Mpi3NVMeEncapsulatedRequest_t *)mpi_request);
1041 if (nvme_fmt == MPI3MR_NVME_DATA_FORMAT_PRP) {
1042 if (mpi3mr_app_build_nvme_prp(sc,
1043 (Mpi3NVMeEncapsulatedRequest_t *) mpi_request,
1044 dma_buffers, bufcnt)) {
1045 rval = ENOMEM;
1046 goto out;
1047 }
1048 } else if (nvme_fmt == MPI3MR_NVME_DATA_FORMAT_SGL1 ||
1049 nvme_fmt == MPI3MR_NVME_DATA_FORMAT_SGL2) {
1050 if (mpi3mr_app_construct_nvme_sgl(sc, (Mpi3NVMeEncapsulatedRequest_t *) mpi_request,
1051 dma_buffers, bufcnt)) {
1052 rval = EINVAL;
1053 goto out;
1054 }
1055 } else {
1056 printf(IOCNAME "%s: Invalid NVMe Command Format\n", sc->name,
1057 __func__);
1058 rval = EINVAL;
1059 goto out;
1060 }
1061 }
1062
1063 sc->ioctl_cmds.state = MPI3MR_CMD_PENDING;
1064 sc->ioctl_cmds.is_waiting = 1;
1065 sc->ioctl_cmds.callback = NULL;
1066 sc->ioctl_cmds.is_senseprst = 0;
1067 sc->ioctl_cmds.sensebuf = kern_erb;
1068 memset((sc->ioctl_cmds.reply), 0, sc->reply_sz);
1069 mpi_header->HostTag = MPI3MR_HOSTTAG_IOCTLCMDS;
1070 init_completion(&sc->ioctl_cmds.completion);
1071 rval = mpi3mr_submit_admin_cmd(sc, mpi_request, MPI3MR_AREQ_FRAME_SZ);
1072 if (rval) {
1073 printf(IOCNAME "Issue IOCTL: Admin Post failed\n", sc->name);
1074 goto out_failed;
1075 }
1076 wait_for_completion_timeout(&sc->ioctl_cmds.completion, karg->timeout);
1077
1078 if (!(sc->ioctl_cmds.state & MPI3MR_CMD_COMPLETE)) {
1079 sc->ioctl_cmds.is_waiting = 0;
1080 printf(IOCNAME "Issue IOCTL: command timed out\n", sc->name);
1081 rval = EAGAIN;
1082 if (sc->ioctl_cmds.state & MPI3MR_CMD_RESET)
1083 goto out_failed;
1084
1085 sc->reset.type = MPI3MR_TRIGGER_SOFT_RESET;
1086 sc->reset.reason = MPI3MR_RESET_FROM_IOCTL_TIMEOUT;
1087 goto out_failed;
1088 }
1089
1090 if (sc->nvme_encap_prp_list && sc->nvme_encap_prp_list_dma) {
1091 bus_dmamap_unload(sc->nvme_encap_prp_list_dmatag, sc->nvme_encap_prp_list_dma_dmamap);
1092 bus_dmamem_free(sc->nvme_encap_prp_list_dmatag, sc->nvme_encap_prp_list, sc->nvme_encap_prp_list_dma_dmamap);
1093 bus_dma_tag_destroy(sc->nvme_encap_prp_list_dmatag);
1094 sc->nvme_encap_prp_list = NULL;
1095 }
1096
1097 if (((sc->ioctl_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK)
1098 != MPI3_IOCSTATUS_SUCCESS) &&
1099 (sc->mpi3mr_debug & MPI3MR_DEBUG_IOCTL)) {
1100 printf(IOCNAME "Issue IOCTL: Failed IOCStatus(0x%04x) Loginfo(0x%08x)\n", sc->name,
1101 (sc->ioctl_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK),
1102 sc->ioctl_cmds.ioc_loginfo);
1103 }
1104
1105 if ((mpirep_offset != 0xFF) &&
1106 dma_buffers[mpirep_offset].user_buf_len) {
1107 dma_buff = &dma_buffers[mpirep_offset];
1108 dma_buff->kern_buf_len = (sizeof(*mpirepbuf) - 1 +
1109 sc->reply_sz);
1110 mpirepbuf = malloc(dma_buff->kern_buf_len, M_MPI3MR, M_NOWAIT | M_ZERO);
1111
1112 if (!mpirepbuf) {
1113 printf(IOCNAME "%s: failed obtaining a memory for mpi reply\n", sc->name,
1114 __func__);
1115 rval = ENOMEM;
1116 goto out_failed;
1117 }
1118 if (sc->ioctl_cmds.state & MPI3MR_CMD_REPLYVALID) {
1119 mpirepbuf->mpirep_type =
1120 MPI3MR_IOCTL_MPI_REPLY_BUFTYPE_ADDRESS;
1121 memcpy(mpirepbuf->repbuf, sc->ioctl_cmds.reply, sc->reply_sz);
1122 } else {
1123 mpirepbuf->mpirep_type =
1124 MPI3MR_IOCTL_MPI_REPLY_BUFTYPE_STATUS;
1125 status_desc = (Mpi3StatusReplyDescriptor_t *)
1126 mpirepbuf->repbuf;
1127 status_desc->IOCStatus = sc->ioctl_cmds.ioc_status;
1128 status_desc->IOCLogInfo = sc->ioctl_cmds.ioc_loginfo;
1129 }
1130 tmplen = min(dma_buff->kern_buf_len, dma_buff->user_buf_len);
1131 if (copyout(mpirepbuf, dma_buff->user_buf, tmplen)) {
1132 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
1133 __FILE__, __LINE__, __func__);
1134 rval = EFAULT;
1135 goto out_failed;
1136 }
1137 }
1138
1139 if (erb_offset != 0xFF && sc->ioctl_cmds.sensebuf &&
1140 sc->ioctl_cmds.is_senseprst) {
1141 dma_buff = &dma_buffers[erb_offset];
1142 tmplen = min(erbsz, dma_buff->user_buf_len);
1143 if (copyout(kern_erb, dma_buff->user_buf, tmplen)) {
1144 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
1145 __FILE__, __LINE__, __func__);
1146 rval = EFAULT;
1147 goto out_failed;
1148 }
1149 }
1150
1151 dma_buff = dma_buffers;
1152 for (count = 0; count < bufcnt; count++, dma_buff++) {
1153 if ((count == 1) && is_rmrb) {
1154 if (copyout(dma_buff->kern_buf, dma_buff->user_buf,dma_buff->kern_buf_len)) {
1155 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
1156 __FILE__, __LINE__, __func__);
1157 rval = EFAULT;
1158 goto out_failed;
1159 }
1160 } else if (dma_buff->data_dir == MPI3MR_APP_DDI) {
1161 tmplen = 0;
1162 for (desc_count = 0; desc_count < dma_buff->num_dma_desc; desc_count++) {
1163 if (copyout(dma_buff->dma_desc[desc_count].addr,
1164 (U8 *)dma_buff->user_buf+tmplen,
1165 dma_buff->dma_desc[desc_count].size)) {
1166 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
1167 __FILE__, __LINE__, __func__);
1168 rval = EFAULT;
1169 goto out_failed;
1170 }
1171 tmplen += dma_buff->dma_desc[desc_count].size;
1172 }
1173 }
1174 }
1175
1176 if ((pel->Function == MPI3_FUNCTION_PERSISTENT_EVENT_LOG) &&
1177 (pel->Action == MPI3_PEL_ACTION_GET_COUNT))
1178 sc->mpi3mr_aen_triggered = 0;
1179
1180 out_failed:
1181 sc->ioctl_cmds.is_senseprst = 0;
1182 sc->ioctl_cmds.sensebuf = NULL;
1183 sc->ioctl_cmds.state = MPI3MR_CMD_NOTUSED;
1184 out:
1185 if (kern_erb)
1186 free(kern_erb, M_MPI3MR);
1187 if (buffer_list)
1188 free(buffer_list, M_MPI3MR);
1189 if (mpi_request)
1190 free(mpi_request, M_MPI3MR);
1191 if (dma_buffers) {
1192 dma_buff = dma_buffers;
1193 for (count = 0; count < bufcnt; count++, dma_buff++) {
1194 free(dma_buff->dma_desc, M_MPI3MR);
1195 }
1196 free(dma_buffers, M_MPI3MR);
1197 }
1198 if (mpirepbuf)
1199 free(mpirepbuf, M_MPI3MR);
1200 return rval;
1201 }
1202
1203 /**
1204 * mpi3mr_soft_reset_from_app - Trigger controller reset
1205 * @sc: Adapter instance reference
1206 *
1207 * This function triggers the controller reset from the
1208 * watchdog context and wait for it to complete. It will
1209 * come out of wait upon completion or timeout exaustion.
1210 *
1211 * Return: 0 on success and proper error codes on failure
1212 */
1213 static long
mpi3mr_soft_reset_from_app(struct mpi3mr_softc * sc)1214 mpi3mr_soft_reset_from_app(struct mpi3mr_softc *sc)
1215 {
1216
1217 U32 timeout;
1218
1219 /* if reset is not in progress, trigger soft reset from watchdog context */
1220 if (!sc->reset_in_progress) {
1221 sc->reset.type = MPI3MR_TRIGGER_SOFT_RESET;
1222 sc->reset.reason = MPI3MR_RESET_FROM_IOCTL;
1223
1224 /* Wait for soft reset to start */
1225 timeout = 50;
1226 while (timeout--) {
1227 if (sc->reset_in_progress == 1)
1228 break;
1229 DELAY(100 * 1000);
1230 }
1231 if (!timeout)
1232 return EFAULT;
1233 }
1234
1235 /* Wait for soft reset to complete */
1236 int i = 0;
1237 timeout = sc->ready_timeout;
1238 while (timeout--) {
1239 if (sc->reset_in_progress == 0)
1240 break;
1241 i++;
1242 if (!(i % 5)) {
1243 mpi3mr_dprint(sc, MPI3MR_INFO,
1244 "[%2ds]waiting for controller reset to be finished from %s\n", i, __func__);
1245 }
1246 DELAY(1000 * 1000);
1247 }
1248
1249 /*
1250 * In case of soft reset failure or not completed within stipulated time,
1251 * fail back to application.
1252 */
1253 if ((!timeout || sc->reset.status))
1254 return EFAULT;
1255
1256 return 0;
1257 }
1258
1259
1260 /**
1261 * mpi3mr_adp_reset - Issue controller reset
1262 * @sc: Adapter instance reference
1263 * @data_out_buf: User buffer with reset type
1264 * @data_out_sz: length of the user buffer.
1265 *
1266 * This function identifies the user provided reset type and
1267 * issues approporiate reset to the controller and wait for that
1268 * to complete and reinitialize the controller and then returns.
1269 *
1270 * Return: 0 on success and proper error codes on failure
1271 */
1272 static long
mpi3mr_adp_reset(struct mpi3mr_softc * sc,void * data_out_buf,U32 data_out_sz)1273 mpi3mr_adp_reset(struct mpi3mr_softc *sc,
1274 void *data_out_buf, U32 data_out_sz)
1275 {
1276 long rval = EINVAL;
1277 struct mpi3mr_ioctl_adpreset adpreset;
1278
1279 memset(&adpreset, 0, sizeof(adpreset));
1280
1281 if (data_out_sz != sizeof(adpreset)) {
1282 printf(IOCNAME "Invalid user adpreset buffer size %s() line: %d\n", sc->name,
1283 __func__, __LINE__);
1284 goto out;
1285 }
1286
1287 if (copyin(data_out_buf, &adpreset, sizeof(adpreset))) {
1288 printf(IOCNAME "failure at %s() line:%d\n", sc->name,
1289 __func__, __LINE__);
1290 rval = EFAULT;
1291 goto out;
1292 }
1293
1294 switch (adpreset.reset_type) {
1295 case MPI3MR_IOCTL_ADPRESET_SOFT:
1296 sc->reset.ioctl_reset_snapdump = false;
1297 break;
1298 case MPI3MR_IOCTL_ADPRESET_DIAG_FAULT:
1299 sc->reset.ioctl_reset_snapdump = true;
1300 break;
1301 default:
1302 printf(IOCNAME "Unknown reset_type(0x%x) issued\n", sc->name,
1303 adpreset.reset_type);
1304 goto out;
1305 }
1306 rval = mpi3mr_soft_reset_from_app(sc);
1307 if (rval)
1308 printf(IOCNAME "reset handler returned error (0x%lx) for reset type 0x%x\n",
1309 sc->name, rval, adpreset.reset_type);
1310
1311 out:
1312 return rval;
1313 }
1314
1315 void
mpi3mr_app_send_aen(struct mpi3mr_softc * sc)1316 mpi3mr_app_send_aen(struct mpi3mr_softc *sc)
1317 {
1318 sc->mpi3mr_aen_triggered = 1;
1319 if (sc->mpi3mr_poll_waiting) {
1320 selwakeup(&sc->mpi3mr_select);
1321 sc->mpi3mr_poll_waiting = 0;
1322 }
1323 return;
1324 }
1325
1326 void
mpi3mr_pel_wait_complete(struct mpi3mr_softc * sc,struct mpi3mr_drvr_cmd * drvr_cmd)1327 mpi3mr_pel_wait_complete(struct mpi3mr_softc *sc,
1328 struct mpi3mr_drvr_cmd *drvr_cmd)
1329 {
1330 U8 retry = 0;
1331 Mpi3PELReply_t *pel_reply = NULL;
1332 mpi3mr_dprint(sc, MPI3MR_TRACE, "%s() line: %d\n", __func__, __LINE__);
1333
1334 if (drvr_cmd->state & MPI3MR_CMD_RESET)
1335 goto cleanup_drvrcmd;
1336
1337 if (!(drvr_cmd->state & MPI3MR_CMD_REPLYVALID)) {
1338 printf(IOCNAME "%s: PELGetSeqNum Failed, No Reply\n", sc->name, __func__);
1339 goto out_failed;
1340 }
1341 pel_reply = (Mpi3PELReply_t *)drvr_cmd->reply;
1342
1343 if (((GET_IOC_STATUS(drvr_cmd->ioc_status)) != MPI3_IOCSTATUS_SUCCESS)
1344 || ((le16toh(pel_reply->PELogStatus) != MPI3_PEL_STATUS_SUCCESS)
1345 && (le16toh(pel_reply->PELogStatus) != MPI3_PEL_STATUS_ABORTED))){
1346 printf(IOCNAME "%s: PELGetSeqNum Failed, IOCStatus(0x%04x) Loginfo(0x%08x) PEL_LogStatus(0x%04x)\n",
1347 sc->name, __func__, GET_IOC_STATUS(drvr_cmd->ioc_status),
1348 drvr_cmd->ioc_loginfo, le16toh(pel_reply->PELogStatus));
1349 retry = 1;
1350 }
1351
1352 if (retry) {
1353 if (drvr_cmd->retry_count < MPI3MR_PELCMDS_RETRYCOUNT) {
1354 drvr_cmd->retry_count++;
1355 printf(IOCNAME "%s : PELWaitretry=%d\n", sc->name,
1356 __func__, drvr_cmd->retry_count);
1357 mpi3mr_issue_pel_wait(sc, drvr_cmd);
1358 return;
1359 }
1360
1361 printf(IOCNAME "%s :PELWait failed after all retries\n", sc->name,
1362 __func__);
1363 goto out_failed;
1364 }
1365
1366 mpi3mr_app_send_aen(sc);
1367
1368 if (!sc->pel_abort_requested) {
1369 sc->pel_cmds.retry_count = 0;
1370 mpi3mr_send_pel_getseq(sc, &sc->pel_cmds);
1371 }
1372
1373 return;
1374 out_failed:
1375 sc->pel_wait_pend = 0;
1376 cleanup_drvrcmd:
1377 drvr_cmd->state = MPI3MR_CMD_NOTUSED;
1378 drvr_cmd->callback = NULL;
1379 drvr_cmd->retry_count = 0;
1380 }
1381
1382 void
mpi3mr_issue_pel_wait(struct mpi3mr_softc * sc,struct mpi3mr_drvr_cmd * drvr_cmd)1383 mpi3mr_issue_pel_wait(struct mpi3mr_softc *sc,
1384 struct mpi3mr_drvr_cmd *drvr_cmd)
1385 {
1386 U8 retry_count = 0;
1387 Mpi3PELReqActionWait_t pel_wait;
1388 mpi3mr_dprint(sc, MPI3MR_TRACE, "%s() line: %d\n", __func__, __LINE__);
1389
1390 sc->pel_abort_requested = 0;
1391
1392 memset(&pel_wait, 0, sizeof(pel_wait));
1393 drvr_cmd->state = MPI3MR_CMD_PENDING;
1394 drvr_cmd->is_waiting = 0;
1395 drvr_cmd->callback = mpi3mr_pel_wait_complete;
1396 drvr_cmd->ioc_status = 0;
1397 drvr_cmd->ioc_loginfo = 0;
1398 pel_wait.HostTag = htole16(MPI3MR_HOSTTAG_PELWAIT);
1399 pel_wait.Function = MPI3_FUNCTION_PERSISTENT_EVENT_LOG;
1400 pel_wait.Action = MPI3_PEL_ACTION_WAIT;
1401 pel_wait.StartingSequenceNumber = htole32(sc->newest_seqnum);
1402 pel_wait.Locale = htole16(sc->pel_locale);
1403 pel_wait.Class = htole16(sc->pel_class);
1404 pel_wait.WaitTime = MPI3_PEL_WAITTIME_INFINITE_WAIT;
1405 printf(IOCNAME "Issuing PELWait: seqnum %u class %u locale 0x%08x\n",
1406 sc->name, sc->newest_seqnum, sc->pel_class, sc->pel_locale);
1407 retry_pel_wait:
1408 if (mpi3mr_submit_admin_cmd(sc, &pel_wait, sizeof(pel_wait))) {
1409 printf(IOCNAME "%s: Issue PELWait IOCTL: Admin Post failed\n", sc->name, __func__);
1410 if (retry_count < MPI3MR_PELCMDS_RETRYCOUNT) {
1411 retry_count++;
1412 goto retry_pel_wait;
1413 }
1414 goto out_failed;
1415 }
1416 return;
1417 out_failed:
1418 drvr_cmd->state = MPI3MR_CMD_NOTUSED;
1419 drvr_cmd->callback = NULL;
1420 drvr_cmd->retry_count = 0;
1421 sc->pel_wait_pend = 0;
1422 return;
1423 }
1424
1425 void
mpi3mr_send_pel_getseq(struct mpi3mr_softc * sc,struct mpi3mr_drvr_cmd * drvr_cmd)1426 mpi3mr_send_pel_getseq(struct mpi3mr_softc *sc,
1427 struct mpi3mr_drvr_cmd *drvr_cmd)
1428 {
1429 U8 retry_count = 0;
1430 U8 sgl_flags = MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST;
1431 Mpi3PELReqActionGetSequenceNumbers_t pel_getseq_req;
1432
1433 memset(&pel_getseq_req, 0, sizeof(pel_getseq_req));
1434 sc->pel_cmds.state = MPI3MR_CMD_PENDING;
1435 sc->pel_cmds.is_waiting = 0;
1436 sc->pel_cmds.ioc_status = 0;
1437 sc->pel_cmds.ioc_loginfo = 0;
1438 sc->pel_cmds.callback = mpi3mr_pel_getseq_complete;
1439 pel_getseq_req.HostTag = htole16(MPI3MR_HOSTTAG_PELWAIT);
1440 pel_getseq_req.Function = MPI3_FUNCTION_PERSISTENT_EVENT_LOG;
1441 pel_getseq_req.Action = MPI3_PEL_ACTION_GET_SEQNUM;
1442 mpi3mr_add_sg_single(&pel_getseq_req.SGL, sgl_flags,
1443 sc->pel_seq_number_sz, sc->pel_seq_number_dma);
1444
1445 retry_pel_getseq:
1446 if (mpi3mr_submit_admin_cmd(sc, &pel_getseq_req, sizeof(pel_getseq_req))) {
1447 printf(IOCNAME "%s: Issuing PEL GetSeq IOCTL: Admin Post failed\n", sc->name, __func__);
1448 if (retry_count < MPI3MR_PELCMDS_RETRYCOUNT) {
1449 retry_count++;
1450 goto retry_pel_getseq;
1451 }
1452 goto out_failed;
1453 }
1454 return;
1455 out_failed:
1456 drvr_cmd->state = MPI3MR_CMD_NOTUSED;
1457 drvr_cmd->callback = NULL;
1458 drvr_cmd->retry_count = 0;
1459 sc->pel_wait_pend = 0;
1460 }
1461
1462 void
mpi3mr_pel_getseq_complete(struct mpi3mr_softc * sc,struct mpi3mr_drvr_cmd * drvr_cmd)1463 mpi3mr_pel_getseq_complete(struct mpi3mr_softc *sc,
1464 struct mpi3mr_drvr_cmd *drvr_cmd)
1465 {
1466 U8 retry = 0;
1467 Mpi3PELReply_t *pel_reply = NULL;
1468 Mpi3PELSeq_t *pel_seq_num = (Mpi3PELSeq_t *)sc->pel_seq_number;
1469 mpi3mr_dprint(sc, MPI3MR_TRACE, "%s() line: %d\n", __func__, __LINE__);
1470
1471 if (drvr_cmd->state & MPI3MR_CMD_RESET)
1472 goto cleanup_drvrcmd;
1473
1474 if (!(drvr_cmd->state & MPI3MR_CMD_REPLYVALID)) {
1475 printf(IOCNAME "%s: PELGetSeqNum Failed, No Reply\n", sc->name, __func__);
1476 goto out_failed;
1477 }
1478 pel_reply = (Mpi3PELReply_t *)drvr_cmd->reply;
1479
1480 if (((GET_IOC_STATUS(drvr_cmd->ioc_status)) != MPI3_IOCSTATUS_SUCCESS)
1481 || (le16toh(pel_reply->PELogStatus) != MPI3_PEL_STATUS_SUCCESS)){
1482 printf(IOCNAME "%s: PELGetSeqNum Failed, IOCStatus(0x%04x) Loginfo(0x%08x) PEL_LogStatus(0x%04x)\n",
1483 sc->name, __func__, GET_IOC_STATUS(drvr_cmd->ioc_status),
1484 drvr_cmd->ioc_loginfo, le16toh(pel_reply->PELogStatus));
1485 retry = 1;
1486 }
1487
1488 if (retry) {
1489 if (drvr_cmd->retry_count < MPI3MR_PELCMDS_RETRYCOUNT) {
1490 drvr_cmd->retry_count++;
1491 printf(IOCNAME "%s : PELGetSeqNUM retry=%d\n", sc->name,
1492 __func__, drvr_cmd->retry_count);
1493 mpi3mr_send_pel_getseq(sc, drvr_cmd);
1494 return;
1495 }
1496 printf(IOCNAME "%s :PELGetSeqNUM failed after all retries\n",
1497 sc->name, __func__);
1498 goto out_failed;
1499 }
1500
1501 sc->newest_seqnum = le32toh(pel_seq_num->Newest) + 1;
1502 drvr_cmd->retry_count = 0;
1503 mpi3mr_issue_pel_wait(sc, drvr_cmd);
1504 return;
1505 out_failed:
1506 sc->pel_wait_pend = 0;
1507 cleanup_drvrcmd:
1508 drvr_cmd->state = MPI3MR_CMD_NOTUSED;
1509 drvr_cmd->callback = NULL;
1510 drvr_cmd->retry_count = 0;
1511 }
1512
1513 static int
mpi3mr_pel_getseq(struct mpi3mr_softc * sc)1514 mpi3mr_pel_getseq(struct mpi3mr_softc *sc)
1515 {
1516 int rval = 0;
1517 U8 sgl_flags = 0;
1518 Mpi3PELReqActionGetSequenceNumbers_t pel_getseq_req;
1519 mpi3mr_dprint(sc, MPI3MR_TRACE, "%s() line: %d\n", __func__, __LINE__);
1520
1521 if (sc->reset_in_progress || sc->block_ioctls) {
1522 printf(IOCNAME "%s: IOCTL failed: reset in progress: %u ioctls blocked: %u\n",
1523 sc->name, __func__, sc->reset_in_progress, sc->block_ioctls);
1524 return -1;
1525 }
1526
1527 memset(&pel_getseq_req, 0, sizeof(pel_getseq_req));
1528 sgl_flags = MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST;
1529 sc->pel_cmds.state = MPI3MR_CMD_PENDING;
1530 sc->pel_cmds.is_waiting = 0;
1531 sc->pel_cmds.retry_count = 0;
1532 sc->pel_cmds.ioc_status = 0;
1533 sc->pel_cmds.ioc_loginfo = 0;
1534 sc->pel_cmds.callback = mpi3mr_pel_getseq_complete;
1535 pel_getseq_req.HostTag = htole16(MPI3MR_HOSTTAG_PELWAIT);
1536 pel_getseq_req.Function = MPI3_FUNCTION_PERSISTENT_EVENT_LOG;
1537 pel_getseq_req.Action = MPI3_PEL_ACTION_GET_SEQNUM;
1538 mpi3mr_add_sg_single(&pel_getseq_req.SGL, sgl_flags,
1539 sc->pel_seq_number_sz, sc->pel_seq_number_dma);
1540
1541 if ((rval = mpi3mr_submit_admin_cmd(sc, &pel_getseq_req, sizeof(pel_getseq_req))))
1542 printf(IOCNAME "%s: Issue IOCTL: Admin Post failed\n", sc->name, __func__);
1543
1544 return rval;
1545 }
1546
1547 int
mpi3mr_pel_abort(struct mpi3mr_softc * sc)1548 mpi3mr_pel_abort(struct mpi3mr_softc *sc)
1549 {
1550 int retval = 0;
1551 U16 pel_log_status;
1552 Mpi3PELReqActionAbort_t pel_abort_req;
1553 Mpi3PELReply_t *pel_reply = NULL;
1554
1555 if (sc->reset_in_progress || sc->block_ioctls) {
1556 printf(IOCNAME "%s: IOCTL failed: reset in progress: %u ioctls blocked: %u\n",
1557 sc->name, __func__, sc->reset_in_progress, sc->block_ioctls);
1558 return -1;
1559 }
1560
1561 memset(&pel_abort_req, 0, sizeof(pel_abort_req));
1562
1563 mtx_lock(&sc->pel_abort_cmd.completion.lock);
1564 if (sc->pel_abort_cmd.state & MPI3MR_CMD_PENDING) {
1565 printf(IOCNAME "%s: PEL Abort command is in use\n", sc->name, __func__);
1566 mtx_unlock(&sc->pel_abort_cmd.completion.lock);
1567 return -1;
1568 }
1569
1570 sc->pel_abort_cmd.state = MPI3MR_CMD_PENDING;
1571 sc->pel_abort_cmd.is_waiting = 1;
1572 sc->pel_abort_cmd.callback = NULL;
1573 pel_abort_req.HostTag = htole16(MPI3MR_HOSTTAG_PELABORT);
1574 pel_abort_req.Function = MPI3_FUNCTION_PERSISTENT_EVENT_LOG;
1575 pel_abort_req.Action = MPI3_PEL_ACTION_ABORT;
1576 pel_abort_req.AbortHostTag = htole16(MPI3MR_HOSTTAG_PELWAIT);
1577
1578 sc->pel_abort_requested = 1;
1579
1580 init_completion(&sc->pel_abort_cmd.completion);
1581 retval = mpi3mr_submit_admin_cmd(sc, &pel_abort_req, sizeof(pel_abort_req));
1582 if (retval) {
1583 printf(IOCNAME "%s: Issue IOCTL: Admin Post failed\n", sc->name, __func__);
1584 sc->pel_abort_requested = 0;
1585 retval = -1;
1586 goto out_unlock;
1587 }
1588 wait_for_completion_timeout(&sc->pel_abort_cmd.completion, MPI3MR_INTADMCMD_TIMEOUT);
1589
1590 if (!(sc->pel_abort_cmd.state & MPI3MR_CMD_COMPLETE)) {
1591 printf(IOCNAME "%s: PEL Abort command timedout\n",sc->name, __func__);
1592 sc->pel_abort_cmd.is_waiting = 0;
1593 retval = -1;
1594 sc->reset.type = MPI3MR_TRIGGER_SOFT_RESET;
1595 sc->reset.reason = MPI3MR_RESET_FROM_PELABORT_TIMEOUT;
1596 goto out_unlock;
1597 }
1598 if (((GET_IOC_STATUS(sc->pel_abort_cmd.ioc_status)) != MPI3_IOCSTATUS_SUCCESS)
1599 || (!(sc->pel_abort_cmd.state & MPI3MR_CMD_REPLYVALID))) {
1600 printf(IOCNAME "%s: PEL Abort command failed, ioc_status(0x%04x) log_info(0x%08x)\n",
1601 sc->name, __func__, GET_IOC_STATUS(sc->pel_abort_cmd.ioc_status),
1602 sc->pel_abort_cmd.ioc_loginfo);
1603 retval = -1;
1604 goto out_unlock;
1605 }
1606
1607 pel_reply = (Mpi3PELReply_t *)sc->pel_abort_cmd.reply;
1608 pel_log_status = le16toh(pel_reply->PELogStatus);
1609 if (pel_log_status != MPI3_PEL_STATUS_SUCCESS) {
1610 printf(IOCNAME "%s: PEL abort command failed, pel_status(0x%04x)\n",
1611 sc->name, __func__, pel_log_status);
1612 retval = -1;
1613 }
1614
1615 out_unlock:
1616 mtx_unlock(&sc->pel_abort_cmd.completion.lock);
1617 sc->pel_abort_cmd.state = MPI3MR_CMD_NOTUSED;
1618 return retval;
1619 }
1620
1621 /**
1622 * mpi3mr_pel_enable - Handler for PEL enable
1623 * @sc: Adapter instance reference
1624 * @data_out_buf: User buffer containing PEL enable data
1625 * @data_out_sz: length of the user buffer.
1626 *
1627 * This function is the handler for PEL enable driver IOCTL.
1628 * Validates the application given class and locale and if
1629 * requires aborts the existing PEL wait request and/or issues
1630 * new PEL wait request to the firmware and returns.
1631 *
1632 * Return: 0 on success and proper error codes on failure.
1633 */
1634 static long
mpi3mr_pel_enable(struct mpi3mr_softc * sc,void * data_out_buf,U32 data_out_sz)1635 mpi3mr_pel_enable(struct mpi3mr_softc *sc,
1636 void *data_out_buf, U32 data_out_sz)
1637 {
1638 long rval = EINVAL;
1639 U8 tmp_class;
1640 U16 tmp_locale;
1641 struct mpi3mr_ioctl_pel_enable pel_enable;
1642 mpi3mr_dprint(sc, MPI3MR_TRACE, "%s() line: %d\n", __func__, __LINE__);
1643
1644
1645 if ((data_out_sz != sizeof(pel_enable) ||
1646 (pel_enable.pel_class > MPI3_PEL_CLASS_FAULT))) {
1647 printf(IOCNAME "%s: Invalid user pel_enable buffer size %u\n",
1648 sc->name, __func__, data_out_sz);
1649 goto out;
1650 }
1651 memset(&pel_enable, 0, sizeof(pel_enable));
1652 if (copyin(data_out_buf, &pel_enable, sizeof(pel_enable))) {
1653 printf(IOCNAME "failure at %s() line:%d\n", sc->name,
1654 __func__, __LINE__);
1655 rval = EFAULT;
1656 goto out;
1657 }
1658 if (pel_enable.pel_class > MPI3_PEL_CLASS_FAULT) {
1659 printf(IOCNAME "%s: out of range class %d\n",
1660 sc->name, __func__, pel_enable.pel_class);
1661 goto out;
1662 }
1663
1664 if (sc->pel_wait_pend) {
1665 if ((sc->pel_class <= pel_enable.pel_class) &&
1666 !((sc->pel_locale & pel_enable.pel_locale) ^
1667 pel_enable.pel_locale)) {
1668 rval = 0;
1669 goto out;
1670 } else {
1671 pel_enable.pel_locale |= sc->pel_locale;
1672 if (sc->pel_class < pel_enable.pel_class)
1673 pel_enable.pel_class = sc->pel_class;
1674
1675 if (mpi3mr_pel_abort(sc)) {
1676 printf(IOCNAME "%s: pel_abort failed, status(%ld)\n",
1677 sc->name, __func__, rval);
1678 goto out;
1679 }
1680 }
1681 }
1682
1683 tmp_class = sc->pel_class;
1684 tmp_locale = sc->pel_locale;
1685 sc->pel_class = pel_enable.pel_class;
1686 sc->pel_locale = pel_enable.pel_locale;
1687 sc->pel_wait_pend = 1;
1688
1689 if ((rval = mpi3mr_pel_getseq(sc))) {
1690 sc->pel_class = tmp_class;
1691 sc->pel_locale = tmp_locale;
1692 sc->pel_wait_pend = 0;
1693 printf(IOCNAME "%s: pel get sequence number failed, status(%ld)\n",
1694 sc->name, __func__, rval);
1695 }
1696
1697 out:
1698 return rval;
1699 }
1700
1701 void
mpi3mr_app_save_logdata(struct mpi3mr_softc * sc,char * event_data,U16 event_data_size)1702 mpi3mr_app_save_logdata(struct mpi3mr_softc *sc, char *event_data,
1703 U16 event_data_size)
1704 {
1705 struct mpi3mr_log_data_entry *entry;
1706 U32 index = sc->log_data_buffer_index, sz;
1707
1708 if (!(sc->log_data_buffer))
1709 return;
1710
1711 entry = (struct mpi3mr_log_data_entry *)
1712 (sc->log_data_buffer + (index * sc->log_data_entry_size));
1713 entry->valid_entry = 1;
1714 sz = min(sc->log_data_entry_size, event_data_size);
1715 memcpy(entry->data, event_data, sz);
1716 sc->log_data_buffer_index =
1717 ((++index) % MPI3MR_IOCTL_LOGDATA_MAX_ENTRIES);
1718 mpi3mr_app_send_aen(sc);
1719 }
1720
1721 /**
1722 * mpi3mr_get_logdata - Handler for get log data
1723 * @sc: Adapter instance reference
1724 * @data_in_buf: User buffer to copy the logdata entries
1725 * @data_in_sz: length of the user buffer.
1726 *
1727 * This function copies the log data entries to the user buffer
1728 * when log caching is enabled in the driver.
1729 *
1730 * Return: 0 on success and proper error codes on failure
1731 */
1732 static long
mpi3mr_get_logdata(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)1733 mpi3mr_get_logdata(struct mpi3mr_softc *sc,
1734 void *data_in_buf, U32 data_in_sz)
1735 {
1736 long rval = EINVAL;
1737 U16 num_entries = 0;
1738 U16 entry_sz = sc->log_data_entry_size;
1739
1740 if ((!sc->log_data_buffer) || (data_in_sz < entry_sz))
1741 return rval;
1742
1743 num_entries = data_in_sz / entry_sz;
1744 if (num_entries > MPI3MR_IOCTL_LOGDATA_MAX_ENTRIES)
1745 num_entries = MPI3MR_IOCTL_LOGDATA_MAX_ENTRIES;
1746
1747 if ((rval = copyout(sc->log_data_buffer, data_in_buf, (num_entries * entry_sz)))) {
1748 printf(IOCNAME "%s: copy to user failed\n", sc->name, __func__);
1749 rval = EFAULT;
1750 }
1751
1752 return rval;
1753 }
1754
1755 /**
1756 * mpi3mr_logdata_enable - Handler for log data enable
1757 * @sc: Adapter instance reference
1758 * @data_in_buf: User buffer to copy the max logdata entry count
1759 * @data_in_sz: length of the user buffer.
1760 *
1761 * This function enables log data caching in the driver if not
1762 * already enabled and return the maximum number of log data
1763 * entries that can be cached in the driver.
1764 *
1765 * Return: 0 on success and proper error codes on failure
1766 */
1767 static long
mpi3mr_logdata_enable(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)1768 mpi3mr_logdata_enable(struct mpi3mr_softc *sc,
1769 void *data_in_buf, U32 data_in_sz)
1770 {
1771 long rval = EINVAL;
1772 struct mpi3mr_ioctl_logdata_enable logdata_enable;
1773
1774 if (data_in_sz < sizeof(logdata_enable))
1775 return rval;
1776
1777 if (sc->log_data_buffer)
1778 goto copy_data;
1779
1780 sc->log_data_entry_size = (sc->reply_sz - (sizeof(Mpi3EventNotificationReply_t) - 4))
1781 + MPI3MR_IOCTL_LOGDATA_ENTRY_HEADER_SZ;
1782
1783 sc->log_data_buffer = malloc((MPI3MR_IOCTL_LOGDATA_MAX_ENTRIES * sc->log_data_entry_size),
1784 M_MPI3MR, M_NOWAIT | M_ZERO);
1785 if (!sc->log_data_buffer) {
1786 printf(IOCNAME "%s log data buffer memory allocation failed\n", sc->name, __func__);
1787 return ENOMEM;
1788 }
1789
1790 sc->log_data_buffer_index = 0;
1791
1792 copy_data:
1793 memset(&logdata_enable, 0, sizeof(logdata_enable));
1794 logdata_enable.max_entries = MPI3MR_IOCTL_LOGDATA_MAX_ENTRIES;
1795
1796 if ((rval = copyout(&logdata_enable, data_in_buf, sizeof(logdata_enable)))) {
1797 printf(IOCNAME "%s: copy to user failed\n", sc->name, __func__);
1798 rval = EFAULT;
1799 }
1800
1801 return rval;
1802 }
1803
1804 /**
1805 * mpi3mr_get_change_count - Get topology change count
1806 * @sc: Adapter instance reference
1807 * @data_in_buf: User buffer to copy the change count
1808 * @data_in_sz: length of the user buffer.
1809 *
1810 * This function copies the toplogy change count provided by the
1811 * driver in events and cached in the driver to the user
1812 * provided buffer for the specific controller.
1813 *
1814 * Return: 0 on success and proper error codes on failure
1815 */
1816 static long
mpi3mr_get_change_count(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)1817 mpi3mr_get_change_count(struct mpi3mr_softc *sc,
1818 void *data_in_buf, U32 data_in_sz)
1819 {
1820 long rval = EINVAL;
1821 struct mpi3mr_ioctl_chgcnt chg_count;
1822 memset(&chg_count, 0, sizeof(chg_count));
1823
1824 chg_count.change_count = sc->change_count;
1825 if (data_in_sz >= sizeof(chg_count)) {
1826 if ((rval = copyout(&chg_count, data_in_buf, sizeof(chg_count)))) {
1827 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name, __FILE__,
1828 __LINE__, __func__);
1829 rval = EFAULT;
1830 }
1831 }
1832 return rval;
1833 }
1834
1835 /**
1836 * mpi3mr_get_alltgtinfo - Get all targets information
1837 * @sc: Adapter instance reference
1838 * @data_in_buf: User buffer to copy the target information
1839 * @data_in_sz: length of the user buffer.
1840 *
1841 * This function copies the driver managed target devices device
1842 * handle, persistent ID, bus ID and taret ID to the user
1843 * provided buffer for the specific controller. This function
1844 * also provides the number of devices managed by the driver for
1845 * the specific controller.
1846 *
1847 * Return: 0 on success and proper error codes on failure
1848 */
1849 static long
mpi3mr_get_alltgtinfo(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)1850 mpi3mr_get_alltgtinfo(struct mpi3mr_softc *sc,
1851 void *data_in_buf, U32 data_in_sz)
1852 {
1853 long rval = EINVAL;
1854 U8 get_count = 0;
1855 U16 i = 0, num_devices = 0;
1856 U32 min_entrylen = 0, kern_entrylen = 0, user_entrylen = 0;
1857 struct mpi3mr_target *tgtdev = NULL;
1858 struct mpi3mr_device_map_info *devmap_info = NULL;
1859 struct mpi3mr_cam_softc *cam_sc = sc->cam_sc;
1860 struct mpi3mr_ioctl_all_tgtinfo *all_tgtinfo = (struct mpi3mr_ioctl_all_tgtinfo *)data_in_buf;
1861
1862 if (data_in_sz < sizeof(uint32_t)) {
1863 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name, __FILE__,
1864 __LINE__, __func__);
1865 goto out;
1866 }
1867 if (data_in_sz == sizeof(uint32_t))
1868 get_count = 1;
1869
1870 if (TAILQ_EMPTY(&cam_sc->tgt_list)) {
1871 get_count = 1;
1872 goto copy_usrbuf;
1873 }
1874
1875 mtx_lock_spin(&cam_sc->sc->target_lock);
1876 TAILQ_FOREACH(tgtdev, &cam_sc->tgt_list, tgt_next) {
1877 num_devices++;
1878 }
1879 mtx_unlock_spin(&cam_sc->sc->target_lock);
1880
1881 if (get_count)
1882 goto copy_usrbuf;
1883
1884 kern_entrylen = num_devices * sizeof(*devmap_info);
1885
1886 devmap_info = malloc(kern_entrylen, M_MPI3MR, M_NOWAIT | M_ZERO);
1887 if (!devmap_info) {
1888 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name, __FILE__,
1889 __LINE__, __func__);
1890 rval = ENOMEM;
1891 goto out;
1892 }
1893 memset((U8*)devmap_info, 0xFF, kern_entrylen);
1894
1895 mtx_lock_spin(&cam_sc->sc->target_lock);
1896 TAILQ_FOREACH(tgtdev, &cam_sc->tgt_list, tgt_next) {
1897 if (i < num_devices) {
1898 devmap_info[i].handle = tgtdev->dev_handle;
1899 devmap_info[i].per_id = tgtdev->per_id;
1900 /*n
1901 * For hidden/ugood device the target_id and bus_id should be 0xFFFFFFFF and 0xFF
1902 */
1903 if (!tgtdev->exposed_to_os) {
1904 devmap_info[i].target_id = 0xFFFFFFFF;
1905 devmap_info[i].bus_id = 0xFF;
1906 } else {
1907 devmap_info[i].target_id = tgtdev->tid;
1908 devmap_info[i].bus_id = 0;
1909 }
1910 i++;
1911 }
1912 }
1913 num_devices = i;
1914 mtx_unlock_spin(&cam_sc->sc->target_lock);
1915
1916 copy_usrbuf:
1917 if (copyout(&num_devices, &all_tgtinfo->num_devices, sizeof(num_devices))) {
1918 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name, __FILE__,
1919 __LINE__, __func__);
1920 rval = EFAULT;
1921 goto out;
1922 }
1923 user_entrylen = (data_in_sz - sizeof(uint32_t))/sizeof(*devmap_info);
1924 user_entrylen *= sizeof(*devmap_info);
1925 min_entrylen = min(user_entrylen, kern_entrylen);
1926 if (min_entrylen && (copyout(devmap_info, &all_tgtinfo->dmi, min_entrylen))) {
1927 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
1928 __FILE__, __LINE__, __func__);
1929 rval = EFAULT;
1930 goto out;
1931 }
1932 rval = 0;
1933 out:
1934 if (devmap_info)
1935 free(devmap_info, M_MPI3MR);
1936
1937 return rval;
1938 }
1939
1940 /**
1941 * mpi3mr_get_tgtinfo - Get specific target information
1942 * @sc: Adapter instance reference
1943 * @karg: driver ponter to users payload buffer
1944 *
1945 * This function copies the driver managed specific target device
1946 * info like handle, persistent ID, bus ID and taret ID to the user
1947 * provided buffer for the specific controller.
1948 *
1949 * Return: 0 on success and proper error codes on failure
1950 */
1951 static long
mpi3mr_get_tgtinfo(struct mpi3mr_softc * sc,struct mpi3mr_ioctl_drvcmd * karg)1952 mpi3mr_get_tgtinfo(struct mpi3mr_softc *sc,
1953 struct mpi3mr_ioctl_drvcmd *karg)
1954 {
1955 long rval = EINVAL;
1956 struct mpi3mr_target *tgtdev = NULL;
1957 struct mpi3mr_ioctl_tgtinfo tgtinfo;
1958
1959 memset(&tgtinfo, 0, sizeof(tgtinfo));
1960
1961 if ((karg->data_out_size != sizeof(struct mpi3mr_ioctl_tgtinfo)) ||
1962 (karg->data_in_size != sizeof(struct mpi3mr_ioctl_tgtinfo))) {
1963 printf(IOCNAME "Invalid user tgtinfo buffer size %s() line: %d\n", sc->name,
1964 __func__, __LINE__);
1965 goto out;
1966 }
1967
1968 if (copyin(karg->data_out_buf, &tgtinfo, sizeof(tgtinfo))) {
1969 printf(IOCNAME "failure at %s() line:%d\n", sc->name,
1970 __func__, __LINE__);
1971 rval = EFAULT;
1972 goto out;
1973 }
1974
1975 if ((tgtinfo.bus_id != 0xFF) && (tgtinfo.target_id != 0xFFFFFFFF)) {
1976 if ((tgtinfo.persistent_id != 0xFFFF) ||
1977 (tgtinfo.dev_handle != 0xFFFF))
1978 goto out;
1979 tgtdev = mpi3mr_find_target_by_per_id(sc->cam_sc, tgtinfo.target_id);
1980 } else if (tgtinfo.persistent_id != 0xFFFF) {
1981 if ((tgtinfo.bus_id != 0xFF) ||
1982 (tgtinfo.dev_handle !=0xFFFF) ||
1983 (tgtinfo.target_id != 0xFFFFFFFF))
1984 goto out;
1985 tgtdev = mpi3mr_find_target_by_per_id(sc->cam_sc, tgtinfo.persistent_id);
1986 } else if (tgtinfo.dev_handle !=0xFFFF) {
1987 if ((tgtinfo.bus_id != 0xFF) ||
1988 (tgtinfo.target_id != 0xFFFFFFFF) ||
1989 (tgtinfo.persistent_id != 0xFFFF))
1990 goto out;
1991 tgtdev = mpi3mr_find_target_by_dev_handle(sc->cam_sc, tgtinfo.dev_handle);
1992 }
1993 if (!tgtdev)
1994 goto out;
1995
1996 tgtinfo.target_id = tgtdev->per_id;
1997 tgtinfo.bus_id = 0;
1998 tgtinfo.dev_handle = tgtdev->dev_handle;
1999 tgtinfo.persistent_id = tgtdev->per_id;
2000 tgtinfo.seq_num = 0;
2001
2002 if (copyout(&tgtinfo, karg->data_in_buf, sizeof(tgtinfo))) {
2003 printf(IOCNAME "failure at %s() line:%d\n", sc->name,
2004 __func__, __LINE__);
2005 rval = EFAULT;
2006 }
2007
2008 out:
2009 return rval;
2010 }
2011
2012 /**
2013 * mpi3mr_get_pciinfo - Get PCI info IOCTL handler
2014 * @sc: Adapter instance reference
2015 * @data_in_buf: User buffer to hold adapter information
2016 * @data_in_sz: length of the user buffer.
2017 *
2018 * This function provides the PCI spec information for the
2019 * given controller
2020 *
2021 * Return: 0 on success and proper error codes on failure
2022 */
2023 static long
mpi3mr_get_pciinfo(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)2024 mpi3mr_get_pciinfo(struct mpi3mr_softc *sc,
2025 void *data_in_buf, U32 data_in_sz)
2026 {
2027 long rval = EINVAL;
2028 U8 i;
2029 struct mpi3mr_ioctl_pciinfo pciinfo;
2030 memset(&pciinfo, 0, sizeof(pciinfo));
2031
2032 for (i = 0; i < 64; i++)
2033 pciinfo.config_space[i] = pci_read_config(sc->mpi3mr_dev, (i * 4), 4);
2034
2035 if (data_in_sz >= sizeof(pciinfo)) {
2036 if ((rval = copyout(&pciinfo, data_in_buf, sizeof(pciinfo)))) {
2037 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
2038 __FILE__, __LINE__, __func__);
2039 rval = EFAULT;
2040 }
2041 }
2042 return rval;
2043 }
2044
2045 /**
2046 * mpi3mr_get_adpinfo - Get adapter info IOCTL handler
2047 * @sc: Adapter instance reference
2048 * @data_in_buf: User buffer to hold adapter information
2049 * @data_in_sz: length of the user buffer.
2050 *
2051 * This function provides adapter information for the given
2052 * controller
2053 *
2054 * Return: 0 on success and proper error codes on failure
2055 */
2056 static long
mpi3mr_get_adpinfo(struct mpi3mr_softc * sc,void * data_in_buf,U32 data_in_sz)2057 mpi3mr_get_adpinfo(struct mpi3mr_softc *sc,
2058 void *data_in_buf, U32 data_in_sz)
2059 {
2060 long rval = EINVAL;
2061 struct mpi3mr_ioctl_adpinfo adpinfo;
2062 enum mpi3mr_iocstate ioc_state;
2063 memset(&adpinfo, 0, sizeof(adpinfo));
2064
2065 adpinfo.adp_type = MPI3MR_IOCTL_ADPTYPE_AVGFAMILY;
2066 adpinfo.pci_dev_id = pci_get_device(sc->mpi3mr_dev);
2067 adpinfo.pci_dev_hw_rev = pci_read_config(sc->mpi3mr_dev, PCIR_REVID, 1);
2068 adpinfo.pci_subsys_dev_id = pci_get_subdevice(sc->mpi3mr_dev);
2069 adpinfo.pci_subsys_ven_id = pci_get_subvendor(sc->mpi3mr_dev);
2070 adpinfo.pci_bus = pci_get_bus(sc->mpi3mr_dev);;
2071 adpinfo.pci_dev = pci_get_slot(sc->mpi3mr_dev);
2072 adpinfo.pci_func = pci_get_function(sc->mpi3mr_dev);
2073 adpinfo.pci_seg_id = pci_get_domain(sc->mpi3mr_dev);
2074 adpinfo.ioctl_ver = MPI3MR_IOCTL_VERSION;
2075 memcpy((U8 *)&adpinfo.driver_info, (U8 *)&sc->driver_info, sizeof(adpinfo.driver_info));
2076
2077 ioc_state = mpi3mr_get_iocstate(sc);
2078
2079 if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
2080 adpinfo.adp_state = MPI3MR_IOCTL_ADP_STATE_UNRECOVERABLE;
2081 else if (sc->reset_in_progress || sc->block_ioctls)
2082 adpinfo.adp_state = MPI3MR_IOCTL_ADP_STATE_IN_RESET;
2083 else if (ioc_state == MRIOC_STATE_FAULT)
2084 adpinfo.adp_state = MPI3MR_IOCTL_ADP_STATE_FAULT;
2085 else
2086 adpinfo.adp_state = MPI3MR_IOCTL_ADP_STATE_OPERATIONAL;
2087
2088 if (data_in_sz >= sizeof(adpinfo)) {
2089 if ((rval = copyout(&adpinfo, data_in_buf, sizeof(adpinfo)))) {
2090 printf(IOCNAME "failure at %s:%d/%s()!\n", sc->name,
2091 __FILE__, __LINE__, __func__);
2092 rval = EFAULT;
2093 }
2094 }
2095 return rval;
2096 }
2097 /**
2098 * mpi3mr_app_drvrcmds - Driver IOCTL handler
2099 * @dev: char device
2100 * @cmd: IOCTL command
2101 * @arg: User data payload buffer for the IOCTL
2102 * @flag: flags
2103 * @thread: threads
2104 *
2105 * This function is the top level handler for driver commands,
2106 * this does basic validation of the buffer and identifies the
2107 * opcode and switches to correct sub handler.
2108 *
2109 * Return: 0 on success and proper error codes on failure
2110 */
2111
2112 static int
mpi3mr_app_drvrcmds(struct cdev * dev,u_long cmd,void * uarg,int flag,struct thread * td)2113 mpi3mr_app_drvrcmds(struct cdev *dev, u_long cmd,
2114 void *uarg, int flag, struct thread *td)
2115 {
2116 long rval = EINVAL;
2117 struct mpi3mr_softc *sc = NULL;
2118 struct mpi3mr_ioctl_drvcmd *karg = (struct mpi3mr_ioctl_drvcmd *)uarg;
2119
2120 sc = mpi3mr_app_get_adp_instance(karg->mrioc_id);
2121 if (!sc)
2122 return ENODEV;
2123
2124 mtx_lock(&sc->ioctl_cmds.completion.lock);
2125 switch (karg->opcode) {
2126 case MPI3MR_DRVRIOCTL_OPCODE_ADPINFO:
2127 rval = mpi3mr_get_adpinfo(sc, karg->data_in_buf, karg->data_in_size);
2128 break;
2129 case MPI3MR_DRVRIOCTL_OPCODE_GETPCIINFO:
2130 rval = mpi3mr_get_pciinfo(sc, karg->data_in_buf, karg->data_in_size);
2131 break;
2132 case MPI3MR_DRVRIOCTL_OPCODE_TGTDEVINFO:
2133 rval = mpi3mr_get_tgtinfo(sc, karg);
2134 break;
2135 case MPI3MR_DRVRIOCTL_OPCODE_ALLTGTDEVINFO:
2136 rval = mpi3mr_get_alltgtinfo(sc, karg->data_in_buf, karg->data_in_size);
2137 break;
2138 case MPI3MR_DRVRIOCTL_OPCODE_GETCHGCNT:
2139 rval = mpi3mr_get_change_count(sc, karg->data_in_buf, karg->data_in_size);
2140 break;
2141 case MPI3MR_DRVRIOCTL_OPCODE_LOGDATAENABLE:
2142 rval = mpi3mr_logdata_enable(sc, karg->data_in_buf, karg->data_in_size);
2143 break;
2144 case MPI3MR_DRVRIOCTL_OPCODE_GETLOGDATA:
2145 rval = mpi3mr_get_logdata(sc, karg->data_in_buf, karg->data_in_size);
2146 break;
2147 case MPI3MR_DRVRIOCTL_OPCODE_PELENABLE:
2148 rval = mpi3mr_pel_enable(sc, karg->data_out_buf, karg->data_out_size);
2149 break;
2150 case MPI3MR_DRVRIOCTL_OPCODE_ADPRESET:
2151 rval = mpi3mr_adp_reset(sc, karg->data_out_buf, karg->data_out_size);
2152 break;
2153 case MPI3MR_DRVRIOCTL_OPCODE_UNKNOWN:
2154 default:
2155 printf("Unsupported drvr ioctl opcode 0x%x\n", karg->opcode);
2156 break;
2157 }
2158 mtx_unlock(&sc->ioctl_cmds.completion.lock);
2159 return rval;
2160 }
2161 /**
2162 * mpi3mr_ioctl - IOCTL Handler
2163 * @dev: char device
2164 * @cmd: IOCTL command
2165 * @arg: User data payload buffer for the IOCTL
2166 * @flag: flags
2167 * @thread: threads
2168 *
2169 * This is the IOCTL entry point which checks the command type and
2170 * executes proper sub handler specific for the command.
2171 *
2172 * Return: 0 on success and proper error codes on failure
2173 */
2174 static int
mpi3mr_ioctl(struct cdev * dev,u_long cmd,caddr_t arg,int flag,struct thread * td)2175 mpi3mr_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
2176 {
2177 int rval = EINVAL;
2178
2179 struct mpi3mr_softc *sc = NULL;
2180 struct mpi3mr_ioctl_drvcmd *karg = (struct mpi3mr_ioctl_drvcmd *)arg;
2181
2182 sc = mpi3mr_app_get_adp_instance(karg->mrioc_id);
2183
2184 if (!sc)
2185 return ENODEV;
2186
2187 mpi3mr_atomic_inc(&sc->pend_ioctls);
2188
2189
2190 if (sc->mpi3mr_flags & MPI3MR_FLAGS_SHUTDOWN) {
2191 mpi3mr_dprint(sc, MPI3MR_INFO,
2192 "Return back IOCTL, shutdown is in progress\n");
2193 mpi3mr_atomic_dec(&sc->pend_ioctls);
2194 return ENODEV;
2195 }
2196
2197 switch (cmd) {
2198 case MPI3MRDRVCMD:
2199 rval = mpi3mr_app_drvrcmds(dev, cmd, arg, flag, td);
2200 break;
2201 case MPI3MRMPTCMD:
2202 mtx_lock(&sc->ioctl_cmds.completion.lock);
2203 rval = mpi3mr_app_mptcmds(dev, cmd, arg, flag, td);
2204 mtx_unlock(&sc->ioctl_cmds.completion.lock);
2205 break;
2206 default:
2207 printf("%s:Unsupported ioctl cmd (0x%08lx)\n", MPI3MR_DRIVER_NAME, cmd);
2208 break;
2209 }
2210
2211 mpi3mr_atomic_dec(&sc->pend_ioctls);
2212
2213 return rval;
2214 }
2215