1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999,2000 Jonathan Lemon
5 * All rights reserved.
6 *
7 # Derived from the original IDA Compaq RAID driver, which is
8 * Copyright (c) 1996, 1997, 1998, 1999
9 * Mark Dawson and David James. All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
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
33 #include <sys/cdefs.h>
34 /*
35 * Generic driver for Compaq SMART RAID adapters.
36 */
37
38 #include <sys/param.h>
39 #include <sys/kernel.h>
40 #include <sys/systm.h>
41 #include <sys/lock.h>
42 #include <sys/malloc.h>
43 #include <sys/mutex.h>
44 #include <sys/stat.h>
45
46 #include <sys/bio.h>
47 #include <sys/bus.h>
48 #include <sys/conf.h>
49 #include <sys/endian.h>
50
51 #include <machine/bus.h>
52 #include <sys/rman.h>
53
54 #include <geom/geom_disk.h>
55
56 #include <dev/ida/idareg.h>
57 #include <dev/ida/idavar.h>
58 #include <dev/ida/idaio.h>
59
60 /* prototypes */
61 static int ida_alloc_qcbs(struct ida_softc *ida);
62 static void ida_done(struct ida_softc *ida, struct ida_qcb *qcb);
63 static void ida_start(struct ida_softc *ida);
64 static void ida_startio(struct ida_softc *ida);
65 static void ida_startup(void *arg);
66 static void ida_timeout(void *arg);
67 static int ida_wait(struct ida_softc *ida, struct ida_qcb *qcb);
68
69 static d_ioctl_t ida_ioctl;
70 static struct cdevsw ida_cdevsw = {
71 .d_version = D_VERSION,
72 .d_ioctl = ida_ioctl,
73 .d_name = "ida",
74 };
75
76 void
ida_free(struct ida_softc * ida)77 ida_free(struct ida_softc *ida)
78 {
79 int i;
80
81 if (ida->ih != NULL)
82 bus_teardown_intr(ida->dev, ida->irq, ida->ih);
83
84 mtx_lock(&ida->lock);
85 callout_stop(&ida->ch);
86 mtx_unlock(&ida->lock);
87 callout_drain(&ida->ch);
88
89 if (ida->buffer_dmat) {
90 for (i = 0; i < IDA_QCB_MAX; i++)
91 bus_dmamap_destroy(ida->buffer_dmat, ida->qcbs[i].dmamap);
92 bus_dma_tag_destroy(ida->buffer_dmat);
93 }
94
95 if (ida->hwqcb_dmat) {
96 if (ida->hwqcb_busaddr)
97 bus_dmamap_unload(ida->hwqcb_dmat, ida->hwqcb_dmamap);
98 if (ida->hwqcbs)
99 bus_dmamem_free(ida->hwqcb_dmat, ida->hwqcbs,
100 ida->hwqcb_dmamap);
101 bus_dma_tag_destroy(ida->hwqcb_dmat);
102 }
103
104 if (ida->qcbs != NULL)
105 free(ida->qcbs, M_DEVBUF);
106
107 if (ida->irq != NULL)
108 bus_release_resource(ida->dev, ida->irq_res_type,
109 0, ida->irq);
110
111 if (ida->parent_dmat != NULL)
112 bus_dma_tag_destroy(ida->parent_dmat);
113
114 if (ida->regs != NULL)
115 bus_release_resource(ida->dev, ida->regs_res_type,
116 ida->regs_res_id, ida->regs);
117
118 mtx_destroy(&ida->lock);
119 }
120
121 /*
122 * record bus address from bus_dmamap_load
123 */
124 static void
ida_dma_map_cb(void * arg,bus_dma_segment_t * segs,int nseg,int error)125 ida_dma_map_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
126 {
127 bus_addr_t *baddr;
128
129 baddr = (bus_addr_t *)arg;
130 *baddr = segs->ds_addr;
131 }
132
133 static __inline struct ida_qcb *
ida_get_qcb(struct ida_softc * ida)134 ida_get_qcb(struct ida_softc *ida)
135 {
136 struct ida_qcb *qcb;
137
138 if ((qcb = SLIST_FIRST(&ida->free_qcbs)) != NULL) {
139 SLIST_REMOVE_HEAD(&ida->free_qcbs, link.sle);
140 bzero(qcb->hwqcb, sizeof(struct ida_hdr) + sizeof(struct ida_req));
141 }
142 return (qcb);
143 }
144
145 static __inline void
ida_free_qcb(struct ida_softc * ida,struct ida_qcb * qcb)146 ida_free_qcb(struct ida_softc *ida, struct ida_qcb *qcb)
147 {
148
149 qcb->state = QCB_FREE;
150 qcb->buf = NULL;
151 qcb->error = 0;
152 SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
153 }
154
155 static __inline bus_addr_t
idahwqcbvtop(struct ida_softc * ida,struct ida_hardware_qcb * hwqcb)156 idahwqcbvtop(struct ida_softc *ida, struct ida_hardware_qcb *hwqcb)
157 {
158 return (ida->hwqcb_busaddr +
159 ((bus_addr_t)hwqcb - (bus_addr_t)ida->hwqcbs));
160 }
161
162 static __inline struct ida_qcb *
idahwqcbptov(struct ida_softc * ida,bus_addr_t hwqcb_addr)163 idahwqcbptov(struct ida_softc *ida, bus_addr_t hwqcb_addr)
164 {
165 struct ida_hardware_qcb *hwqcb;
166
167 hwqcb = (struct ida_hardware_qcb *)
168 ((bus_addr_t)ida->hwqcbs + (hwqcb_addr - ida->hwqcb_busaddr));
169 return (hwqcb->qcb);
170 }
171
172 static int
ida_alloc_qcbs(struct ida_softc * ida)173 ida_alloc_qcbs(struct ida_softc *ida)
174 {
175 struct ida_qcb *qcb;
176 int error, i;
177
178 for (i = 0; i < IDA_QCB_MAX; i++) {
179 qcb = &ida->qcbs[i];
180
181 error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap);
182 if (error != 0)
183 return (error);
184
185 qcb->ida = ida;
186 qcb->flags = QCB_FREE;
187 qcb->hwqcb = &ida->hwqcbs[i];
188 qcb->hwqcb->qcb = qcb;
189 qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb);
190 SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
191 }
192 return (0);
193 }
194
195 int
ida_setup(struct ida_softc * ida)196 ida_setup(struct ida_softc *ida)
197 {
198 struct ida_controller_info cinfo;
199 device_t child;
200 int error, i, unit;
201
202 SLIST_INIT(&ida->free_qcbs);
203 STAILQ_INIT(&ida->qcb_queue);
204 bioq_init(&ida->bio_queue);
205
206 ida->qcbs = (struct ida_qcb *)
207 malloc(IDA_QCB_MAX * sizeof(struct ida_qcb), M_DEVBUF,
208 M_NOWAIT | M_ZERO);
209 if (ida->qcbs == NULL)
210 return (ENOMEM);
211
212 /*
213 * Create our DMA tags
214 */
215
216 /* DMA tag for our hardware QCB structures */
217 error = bus_dma_tag_create(
218 /* parent */ ida->parent_dmat,
219 /* alignment */ 1,
220 /* boundary */ 0,
221 /* lowaddr */ BUS_SPACE_MAXADDR,
222 /* highaddr */ BUS_SPACE_MAXADDR,
223 /* filter */ NULL,
224 /* filterarg */ NULL,
225 /* maxsize */ IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
226 /* nsegments */ 1,
227 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
228 /* flags */ 0,
229 /* lockfunc */ NULL,
230 /* lockarg */ NULL,
231 &ida->hwqcb_dmat);
232 if (error)
233 return (ENOMEM);
234
235 /* DMA tag for mapping buffers into device space */
236 error = bus_dma_tag_create(
237 /* parent */ ida->parent_dmat,
238 /* alignment */ 1,
239 /* boundary */ 0,
240 /* lowaddr */ BUS_SPACE_MAXADDR,
241 /* highaddr */ BUS_SPACE_MAXADDR,
242 /* filter */ NULL,
243 /* filterarg */ NULL,
244 /* maxsize */ DFLTPHYS,
245 /* nsegments */ IDA_NSEG,
246 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
247 /* flags */ 0,
248 /* lockfunc */ busdma_lock_mutex,
249 /* lockarg */ &ida->lock,
250 &ida->buffer_dmat);
251 if (error)
252 return (ENOMEM);
253
254 /* Allocation of hardware QCBs */
255 /* XXX allocation is rounded to hardware page size */
256 error = bus_dmamem_alloc(ida->hwqcb_dmat,
257 (void **)&ida->hwqcbs, BUS_DMA_NOWAIT, &ida->hwqcb_dmamap);
258 if (error)
259 return (ENOMEM);
260
261 /* And permanently map them in */
262 bus_dmamap_load(ida->hwqcb_dmat, ida->hwqcb_dmamap,
263 ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb),
264 ida_dma_map_cb, &ida->hwqcb_busaddr, /*flags*/0);
265
266 bzero(ida->hwqcbs, IDA_QCB_MAX * sizeof(struct ida_hardware_qcb));
267
268 error = ida_alloc_qcbs(ida);
269 if (error)
270 return (error);
271
272 mtx_lock(&ida->lock);
273 ida->cmd.int_enable(ida, 0);
274
275 error = ida_command(ida, CMD_GET_CTRL_INFO, &cinfo, sizeof(cinfo),
276 IDA_CONTROLLER, 0, DMA_DATA_IN);
277 if (error) {
278 mtx_unlock(&ida->lock);
279 device_printf(ida->dev, "CMD_GET_CTRL_INFO failed.\n");
280 return (error);
281 }
282
283 device_printf(ida->dev, "drives=%d firm_rev=%c%c%c%c\n",
284 cinfo.num_drvs, cinfo.firm_rev[0], cinfo.firm_rev[1],
285 cinfo.firm_rev[2], cinfo.firm_rev[3]);
286
287 if (ida->flags & IDA_FIRMWARE) {
288 int data;
289
290 error = ida_command(ida, CMD_START_FIRMWARE,
291 &data, sizeof(data), IDA_CONTROLLER, 0, DMA_DATA_IN);
292 if (error) {
293 mtx_unlock(&ida->lock);
294 device_printf(ida->dev, "CMD_START_FIRMWARE failed.\n");
295 return (error);
296 }
297 }
298
299 ida->cmd.int_enable(ida, 1);
300 ida->flags |= IDA_ATTACHED;
301 mtx_unlock(&ida->lock);
302
303 for (i = 0; i < cinfo.num_drvs; i++) {
304 child = device_add_child(ida->dev, /*"idad"*/NULL, DEVICE_UNIT_ANY);
305 if (child != NULL)
306 device_set_ivars(child, (void *)(intptr_t)i);
307 }
308
309 ida->ich.ich_func = ida_startup;
310 ida->ich.ich_arg = ida;
311 if (config_intrhook_establish(&ida->ich) != 0) {
312 device_delete_children(ida->dev);
313 device_printf(ida->dev, "Cannot establish configuration hook\n");
314 return (error);
315 }
316
317 unit = device_get_unit(ida->dev);
318 ida->ida_dev_t = make_dev(&ida_cdevsw, unit,
319 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
320 "ida%d", unit);
321 ida->ida_dev_t->si_drv1 = ida;
322
323 return (0);
324 }
325
326 static void
ida_startup(void * arg)327 ida_startup(void *arg)
328 {
329 struct ida_softc *ida;
330
331 ida = arg;
332
333 config_intrhook_disestablish(&ida->ich);
334
335 bus_topo_lock();
336 bus_attach_children(ida->dev);
337 bus_topo_unlock();
338 }
339
340 int
ida_detach(device_t dev)341 ida_detach(device_t dev)
342 {
343 struct ida_softc *ida;
344 int error;
345
346 ida = (struct ida_softc *)device_get_softc(dev);
347
348 error = bus_generic_detach(dev);
349 if (error)
350 return (error);
351
352 /*
353 * XXX
354 * before detaching, we must make sure that the system is
355 * quiescent; nothing mounted, no pending activity.
356 */
357
358 /*
359 * XXX
360 * now, how are we supposed to maintain a list of our drives?
361 * iterate over our "child devices"?
362 */
363
364 destroy_dev(ida->ida_dev_t);
365 ida_free(ida);
366 return (error);
367 }
368
369 static void
ida_data_cb(void * arg,bus_dma_segment_t * segs,int nsegments,int error)370 ida_data_cb(void *arg, bus_dma_segment_t *segs, int nsegments, int error)
371 {
372 struct ida_hardware_qcb *hwqcb;
373 struct ida_softc *ida;
374 struct ida_qcb *qcb;
375 bus_dmasync_op_t op;
376 int i;
377
378 qcb = arg;
379 ida = qcb->ida;
380 if (!dumping)
381 mtx_assert(&ida->lock, MA_OWNED);
382 if (error) {
383 qcb->error = error;
384 ida_done(ida, qcb);
385 return;
386 }
387
388 hwqcb = qcb->hwqcb;
389 hwqcb->hdr.size = htole16((sizeof(struct ida_req) +
390 sizeof(struct ida_sgb) * IDA_NSEG) >> 2);
391
392 for (i = 0; i < nsegments; i++) {
393 hwqcb->seg[i].addr = htole32(segs[i].ds_addr);
394 hwqcb->seg[i].length = htole32(segs[i].ds_len);
395 }
396 hwqcb->req.sgcount = nsegments;
397 if (qcb->flags & DMA_DATA_TRANSFER) {
398 switch (qcb->flags & DMA_DATA_TRANSFER) {
399 case DMA_DATA_TRANSFER:
400 op = BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE;
401 break;
402 case DMA_DATA_IN:
403 op = BUS_DMASYNC_PREREAD;
404 break;
405 default:
406 KASSERT((qcb->flags & DMA_DATA_TRANSFER) ==
407 DMA_DATA_OUT, ("bad DMA data flags"));
408 op = BUS_DMASYNC_PREWRITE;
409 break;
410 }
411 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
412 }
413 bus_dmamap_sync(ida->hwqcb_dmat, ida->hwqcb_dmamap,
414 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
415
416 STAILQ_INSERT_TAIL(&ida->qcb_queue, qcb, link.stqe);
417 ida_start(ida);
418 ida->flags &= ~IDA_QFROZEN;
419 }
420
421 static int
ida_map_qcb(struct ida_softc * ida,struct ida_qcb * qcb,void * data,bus_size_t datasize)422 ida_map_qcb(struct ida_softc *ida, struct ida_qcb *qcb, void *data,
423 bus_size_t datasize)
424 {
425 int error, flags;
426
427 if (ida->flags & IDA_INTERRUPTS)
428 flags = BUS_DMA_WAITOK;
429 else
430 flags = BUS_DMA_NOWAIT;
431 error = bus_dmamap_load(ida->buffer_dmat, qcb->dmamap, data, datasize,
432 ida_data_cb, qcb, flags);
433 if (error == EINPROGRESS) {
434 ida->flags |= IDA_QFROZEN;
435 error = 0;
436 }
437 return (error);
438 }
439
440 int
ida_command(struct ida_softc * ida,int command,void * data,int datasize,int drive,u_int32_t pblkno,int flags)441 ida_command(struct ida_softc *ida, int command, void *data, int datasize,
442 int drive, u_int32_t pblkno, int flags)
443 {
444 struct ida_hardware_qcb *hwqcb;
445 struct ida_qcb *qcb;
446 int error;
447
448 if (!dumping)
449 mtx_assert(&ida->lock, MA_OWNED);
450 qcb = ida_get_qcb(ida);
451
452 if (qcb == NULL) {
453 device_printf(ida->dev, "out of QCBs\n");
454 return (EAGAIN);
455 }
456
457 qcb->flags = flags | IDA_COMMAND;
458 hwqcb = qcb->hwqcb;
459 hwqcb->hdr.drive = drive;
460 hwqcb->req.blkno = htole32(pblkno);
461 hwqcb->req.bcount = htole16(howmany(datasize, DEV_BSIZE));
462 hwqcb->req.command = command;
463
464 error = ida_map_qcb(ida, qcb, data, datasize);
465 if (error == 0) {
466 error = ida_wait(ida, qcb);
467 /* Don't free QCB on a timeout in case it later completes. */
468 if (error)
469 return (error);
470 error = qcb->error;
471 }
472
473 /* XXX should have status returned here? */
474 /* XXX have "status pointer" area in QCB? */
475
476 ida_free_qcb(ida, qcb);
477 return (error);
478 }
479
480 void
ida_submit_buf(struct ida_softc * ida,struct bio * bp)481 ida_submit_buf(struct ida_softc *ida, struct bio *bp)
482 {
483 mtx_lock(&ida->lock);
484 bioq_insert_tail(&ida->bio_queue, bp);
485 ida_startio(ida);
486 mtx_unlock(&ida->lock);
487 }
488
489 static void
ida_startio(struct ida_softc * ida)490 ida_startio(struct ida_softc *ida)
491 {
492 struct ida_hardware_qcb *hwqcb;
493 struct ida_qcb *qcb;
494 struct idad_softc *drv;
495 struct bio *bp;
496 int error;
497
498 mtx_assert(&ida->lock, MA_OWNED);
499 for (;;) {
500 if (ida->flags & IDA_QFROZEN)
501 return;
502 bp = bioq_first(&ida->bio_queue);
503 if (bp == NULL)
504 return; /* no more buffers */
505
506 qcb = ida_get_qcb(ida);
507 if (qcb == NULL)
508 return; /* out of resources */
509
510 bioq_remove(&ida->bio_queue, bp);
511 qcb->buf = bp;
512 qcb->flags = bp->bio_cmd == BIO_READ ? DMA_DATA_IN : DMA_DATA_OUT;
513
514 hwqcb = qcb->hwqcb;
515 drv = bp->bio_driver1;
516 hwqcb->hdr.drive = drv->drive;
517 hwqcb->req.blkno = bp->bio_pblkno;
518 hwqcb->req.bcount = howmany(bp->bio_bcount, DEV_BSIZE);
519 hwqcb->req.command = bp->bio_cmd == BIO_READ ? CMD_READ : CMD_WRITE;
520
521 error = ida_map_qcb(ida, qcb, bp->bio_data, bp->bio_bcount);
522 if (error) {
523 qcb->error = error;
524 ida_done(ida, qcb);
525 }
526 }
527 }
528
529 static void
ida_start(struct ida_softc * ida)530 ida_start(struct ida_softc *ida)
531 {
532 struct ida_qcb *qcb;
533
534 if (!dumping)
535 mtx_assert(&ida->lock, MA_OWNED);
536 while ((qcb = STAILQ_FIRST(&ida->qcb_queue)) != NULL) {
537 if (ida->cmd.fifo_full(ida))
538 break;
539 STAILQ_REMOVE_HEAD(&ida->qcb_queue, link.stqe);
540 /*
541 * XXX
542 * place the qcb on an active list?
543 */
544
545 /* Set a timeout. */
546 if (!ida->qactive && !dumping)
547 callout_reset(&ida->ch, hz * 5, ida_timeout, ida);
548 ida->qactive++;
549
550 qcb->state = QCB_ACTIVE;
551 ida->cmd.submit(ida, qcb);
552 }
553 }
554
555 static int
ida_wait(struct ida_softc * ida,struct ida_qcb * qcb)556 ida_wait(struct ida_softc *ida, struct ida_qcb *qcb)
557 {
558 struct ida_qcb *qcb_done = NULL;
559 bus_addr_t completed;
560 int delay;
561
562 if (!dumping)
563 mtx_assert(&ida->lock, MA_OWNED);
564 if (ida->flags & IDA_INTERRUPTS) {
565 if (mtx_sleep(qcb, &ida->lock, PRIBIO, "idacmd", 5 * hz)) {
566 qcb->state = QCB_TIMEDOUT;
567 return (ETIMEDOUT);
568 }
569 return (0);
570 }
571
572 again:
573 delay = 5 * 1000 * 100; /* 5 sec delay */
574 while ((completed = ida->cmd.done(ida)) == 0) {
575 if (delay-- == 0) {
576 qcb->state = QCB_TIMEDOUT;
577 return (ETIMEDOUT);
578 }
579 DELAY(10);
580 }
581
582 qcb_done = idahwqcbptov(ida, completed & ~3);
583 if (qcb_done != qcb)
584 goto again;
585 ida_done(ida, qcb);
586 return (0);
587 }
588
589 void
ida_intr(void * data)590 ida_intr(void *data)
591 {
592 struct ida_softc *ida;
593 struct ida_qcb *qcb;
594 bus_addr_t completed;
595
596 ida = (struct ida_softc *)data;
597
598 mtx_lock(&ida->lock);
599 if (ida->cmd.int_pending(ida) == 0) {
600 mtx_unlock(&ida->lock);
601 return; /* not our interrupt */
602 }
603
604 while ((completed = ida->cmd.done(ida)) != 0) {
605 qcb = idahwqcbptov(ida, completed & ~3);
606
607 if (qcb == NULL || qcb->state != QCB_ACTIVE) {
608 device_printf(ida->dev,
609 "ignoring completion %jx\n", (intmax_t)completed);
610 continue;
611 }
612 /* Handle "Bad Command List" errors. */
613 if ((completed & 3) && (qcb->hwqcb->req.error == 0))
614 qcb->hwqcb->req.error = CMD_REJECTED;
615 ida_done(ida, qcb);
616 }
617 ida_startio(ida);
618 mtx_unlock(&ida->lock);
619 }
620
621 /*
622 * should switch out command type; may be status, not just I/O.
623 */
624 static void
ida_done(struct ida_softc * ida,struct ida_qcb * qcb)625 ida_done(struct ida_softc *ida, struct ida_qcb *qcb)
626 {
627 bus_dmasync_op_t op;
628 int active, error = 0;
629
630 /*
631 * finish up command
632 */
633 if (!dumping)
634 mtx_assert(&ida->lock, MA_OWNED);
635 active = (qcb->state != QCB_FREE);
636 if (qcb->flags & DMA_DATA_TRANSFER && active) {
637 switch (qcb->flags & DMA_DATA_TRANSFER) {
638 case DMA_DATA_TRANSFER:
639 op = BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE;
640 break;
641 case DMA_DATA_IN:
642 op = BUS_DMASYNC_POSTREAD;
643 break;
644 default:
645 KASSERT((qcb->flags & DMA_DATA_TRANSFER) ==
646 DMA_DATA_OUT, ("bad DMA data flags"));
647 op = BUS_DMASYNC_POSTWRITE;
648 break;
649 }
650 bus_dmamap_sync(ida->buffer_dmat, qcb->dmamap, op);
651 bus_dmamap_unload(ida->buffer_dmat, qcb->dmamap);
652 }
653 if (active)
654 bus_dmamap_sync(ida->hwqcb_dmat, ida->hwqcb_dmamap,
655 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
656
657 if (qcb->hwqcb->req.error & SOFT_ERROR) {
658 if (qcb->buf)
659 device_printf(ida->dev, "soft %s error\n",
660 qcb->buf->bio_cmd == BIO_READ ?
661 "read" : "write");
662 else
663 device_printf(ida->dev, "soft error\n");
664 }
665 if (qcb->hwqcb->req.error & HARD_ERROR) {
666 error = 1;
667 if (qcb->buf)
668 device_printf(ida->dev, "hard %s error\n",
669 qcb->buf->bio_cmd == BIO_READ ?
670 "read" : "write");
671 else
672 device_printf(ida->dev, "hard error\n");
673 }
674 if (qcb->hwqcb->req.error & CMD_REJECTED) {
675 error = 1;
676 device_printf(ida->dev, "invalid request\n");
677 }
678 if (qcb->error) {
679 error = 1;
680 device_printf(ida->dev, "request failed to map: %d\n", qcb->error);
681 }
682
683 if (qcb->flags & IDA_COMMAND) {
684 if (ida->flags & IDA_INTERRUPTS)
685 wakeup(qcb);
686 if (qcb->state == QCB_TIMEDOUT)
687 ida_free_qcb(ida, qcb);
688 } else {
689 KASSERT(qcb->buf != NULL, ("ida_done(): qcb->buf is NULL!"));
690 if (error)
691 qcb->buf->bio_flags |= BIO_ERROR;
692 idad_intr(qcb->buf);
693 ida_free_qcb(ida, qcb);
694 }
695
696 if (!active)
697 return;
698
699 ida->qactive--;
700 /* Reschedule or cancel timeout */
701 if (ida->qactive)
702 callout_reset(&ida->ch, hz * 5, ida_timeout, ida);
703 else
704 callout_stop(&ida->ch);
705 }
706
707 static void
ida_timeout(void * arg)708 ida_timeout(void *arg)
709 {
710 struct ida_softc *ida;
711
712 ida = (struct ida_softc *)arg;
713 device_printf(ida->dev, "%s() qactive %d\n", __func__, ida->qactive);
714
715 if (ida->flags & IDA_INTERRUPTS)
716 device_printf(ida->dev, "IDA_INTERRUPTS\n");
717
718 device_printf(ida->dev, "\t R_CMD_FIFO: %08x\n"
719 "\t R_DONE_FIFO: %08x\n"
720 "\t R_INT_MASK: %08x\n"
721 "\t R_STATUS: %08x\n"
722 "\tR_INT_PENDING: %08x\n",
723 ida_inl(ida, R_CMD_FIFO),
724 ida_inl(ida, R_DONE_FIFO),
725 ida_inl(ida, R_INT_MASK),
726 ida_inl(ida, R_STATUS),
727 ida_inl(ida, R_INT_PENDING));
728
729 return;
730 }
731
732 /*
733 * IOCTL stuff follows.
734 */
735 struct cmd_info {
736 int cmd;
737 int len;
738 int flags;
739 };
740 static struct cmd_info *ida_cmd_lookup(int);
741
742 static int
ida_ioctl(struct cdev * dev,u_long cmd,caddr_t addr,int32_t flag,struct thread * td)743 ida_ioctl (struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td)
744 {
745 struct ida_softc *sc;
746 struct ida_user_command *uc;
747 struct cmd_info *ci;
748 int len;
749 int flags;
750 int error;
751 int data;
752 void *daddr;
753
754 sc = (struct ida_softc *)dev->si_drv1;
755 uc = (struct ida_user_command *)addr;
756 error = 0;
757
758 switch (cmd) {
759 case IDAIO_COMMAND:
760 ci = ida_cmd_lookup(uc->command);
761 if (ci == NULL) {
762 error = EINVAL;
763 break;
764 }
765 len = ci->len;
766 flags = ci->flags;
767 if (len)
768 daddr = &uc->d.buf;
769 else {
770 daddr = &data;
771 len = sizeof(data);
772 }
773 mtx_lock(&sc->lock);
774 error = ida_command(sc, uc->command, daddr, len,
775 uc->drive, uc->blkno, flags);
776 mtx_unlock(&sc->lock);
777 break;
778 default:
779 error = ENOIOCTL;
780 break;
781 }
782 return (error);
783 }
784
785 static struct cmd_info ci_list[] = {
786 { CMD_GET_LOG_DRV_INFO,
787 sizeof(struct ida_drive_info), DMA_DATA_IN },
788 { CMD_GET_CTRL_INFO,
789 sizeof(struct ida_controller_info), DMA_DATA_IN },
790 { CMD_SENSE_DRV_STATUS,
791 sizeof(struct ida_drive_status), DMA_DATA_IN },
792 { CMD_START_RECOVERY, 0, 0 },
793 { CMD_GET_PHYS_DRV_INFO,
794 sizeof(struct ida_phys_drv_info), DMA_DATA_TRANSFER },
795 { CMD_BLINK_DRV_LEDS,
796 sizeof(struct ida_blink_drv_leds), DMA_DATA_OUT },
797 { CMD_SENSE_DRV_LEDS,
798 sizeof(struct ida_blink_drv_leds), DMA_DATA_IN },
799 { CMD_GET_LOG_DRV_EXT,
800 sizeof(struct ida_drive_info_ext), DMA_DATA_IN },
801 { CMD_RESET_CTRL, 0, 0 },
802 { CMD_GET_CONFIG, 0, 0 },
803 { CMD_SET_CONFIG, 0, 0 },
804 { CMD_LABEL_LOG_DRV,
805 sizeof(struct ida_label_logical), DMA_DATA_OUT },
806 { CMD_SET_SURFACE_DELAY, 0, 0 },
807 { CMD_SENSE_BUS_PARAMS, 0, 0 },
808 { CMD_SENSE_SUBSYS_INFO, 0, 0 },
809 { CMD_SENSE_SURFACE_ATS, 0, 0 },
810 { CMD_PASSTHROUGH, 0, 0 },
811 { CMD_RESET_SCSI_DEV, 0, 0 },
812 { CMD_PAUSE_BG_ACT, 0, 0 },
813 { CMD_RESUME_BG_ACT, 0, 0 },
814 { CMD_START_FIRMWARE, 0, 0 },
815 { CMD_SENSE_DRV_ERR_LOG, 0, 0 },
816 { CMD_START_CPM, 0, 0 },
817 { CMD_SENSE_CP, 0, 0 },
818 { CMD_STOP_CPM, 0, 0 },
819 { CMD_FLUSH_CACHE, 0, 0 },
820 { CMD_ACCEPT_MEDIA_EXCH, 0, 0 },
821 { 0, 0, 0 }
822 };
823
824 static struct cmd_info *
ida_cmd_lookup(int command)825 ida_cmd_lookup (int command)
826 {
827 struct cmd_info *ci;
828
829 ci = ci_list;
830 while (ci->cmd) {
831 if (ci->cmd == command)
832 return (ci);
833 ci++;
834 }
835 return (NULL);
836 }
837