Update for file-4.23 import:
[dragonfly.git] / sys / dev / raid / aac / aac.c
CommitLineData
984263bc
MD
1/*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2001 Scott Long
4 * Copyright (c) 2000 BSDi
5 * Copyright (c) 2001 Adaptec, Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/sys/dev/aac/aac.c,v 1.9.2.14 2003/04/08 13:22:08 scottl Exp $
09ccaff3 30 * $DragonFly: src/sys/dev/raid/aac/aac.c,v 1.33 2007/11/10 19:02:04 swildner Exp $
984263bc
MD
31 */
32
33/*
34 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters.
35 */
36
37#include "opt_aac.h"
38
39/* #include <stddef.h> */
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/malloc.h>
43#include <sys/kernel.h>
44#include <sys/kthread.h>
45#include <sys/sysctl.h>
46#include <sys/poll.h>
42cdd4ab 47#if defined(__FreeBSD__) && __FreeBSD_version >= 500005
984263bc
MD
48#include <sys/selinfo.h>
49#else
50#include <sys/select.h>
51#endif
52
1f2de5d4 53#include "aac_compat.h"
984263bc
MD
54
55#include <sys/bus.h>
56#include <sys/conf.h>
57#include <sys/devicestat.h>
58#include <sys/disk.h>
59#include <sys/signalvar.h>
60#include <sys/time.h>
61#include <sys/eventhandler.h>
62
1f2de5d4
MD
63#include "aacreg.h"
64#include "aac_ioctl.h"
65#include "aacvar.h"
66#include "aac_tables.h"
67#include "aac_cam.h"
984263bc
MD
68
69static void aac_startup(void *arg);
70static void aac_add_container(struct aac_softc *sc,
71 struct aac_mntinforesp *mir, int f);
72static void aac_get_bus_info(struct aac_softc *sc);
09ccaff3 73static int aac_shutdown(device_t dev);
984263bc
MD
74
75/* Command Processing */
9087698d 76static void aac_timeout(void *ssc);
984263bc
MD
77static int aac_start(struct aac_command *cm);
78static void aac_complete(void *context, int pending);
79static int aac_bio_command(struct aac_softc *sc, struct aac_command **cmp);
80static void aac_bio_complete(struct aac_command *cm);
81static int aac_wait_command(struct aac_command *cm, int timeout);
82static void aac_host_command(struct aac_softc *sc);
83static void aac_host_response(struct aac_softc *sc);
84
85/* Command Buffer Management */
86static void aac_map_command_helper(void *arg, bus_dma_segment_t *segs,
87 int nseg, int error);
88static int aac_alloc_commands(struct aac_softc *sc);
89static void aac_free_commands(struct aac_softc *sc);
90static void aac_map_command(struct aac_command *cm);
91static void aac_unmap_command(struct aac_command *cm);
92
93/* Hardware Interface */
94static void aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg,
95 int error);
96static int aac_check_firmware(struct aac_softc *sc);
97static int aac_init(struct aac_softc *sc);
98static int aac_sync_command(struct aac_softc *sc, u_int32_t command,
99 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2,
100 u_int32_t arg3, u_int32_t *sp);
101static int aac_enqueue_fib(struct aac_softc *sc, int queue,
102 struct aac_command *cm);
103static int aac_dequeue_fib(struct aac_softc *sc, int queue,
104 u_int32_t *fib_size, struct aac_fib **fib_addr);
105static int aac_enqueue_response(struct aac_softc *sc, int queue,
106 struct aac_fib *fib);
107
108/* Falcon/PPC interface */
109static int aac_fa_get_fwstatus(struct aac_softc *sc);
110static void aac_fa_qnotify(struct aac_softc *sc, int qbit);
111static int aac_fa_get_istatus(struct aac_softc *sc);
112static void aac_fa_clear_istatus(struct aac_softc *sc, int mask);
113static void aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
114 u_int32_t arg0, u_int32_t arg1,
115 u_int32_t arg2, u_int32_t arg3);
116static int aac_fa_get_mailbox(struct aac_softc *sc, int mb);
117static void aac_fa_set_interrupts(struct aac_softc *sc, int enable);
118
119struct aac_interface aac_fa_interface = {
120 aac_fa_get_fwstatus,
121 aac_fa_qnotify,
122 aac_fa_get_istatus,
123 aac_fa_clear_istatus,
124 aac_fa_set_mailbox,
125 aac_fa_get_mailbox,
126 aac_fa_set_interrupts
127};
128
129/* StrongARM interface */
130static int aac_sa_get_fwstatus(struct aac_softc *sc);
131static void aac_sa_qnotify(struct aac_softc *sc, int qbit);
132static int aac_sa_get_istatus(struct aac_softc *sc);
133static void aac_sa_clear_istatus(struct aac_softc *sc, int mask);
134static void aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command,
135 u_int32_t arg0, u_int32_t arg1,
136 u_int32_t arg2, u_int32_t arg3);
137static int aac_sa_get_mailbox(struct aac_softc *sc, int mb);
138static void aac_sa_set_interrupts(struct aac_softc *sc, int enable);
139
140struct aac_interface aac_sa_interface = {
141 aac_sa_get_fwstatus,
142 aac_sa_qnotify,
143 aac_sa_get_istatus,
144 aac_sa_clear_istatus,
145 aac_sa_set_mailbox,
146 aac_sa_get_mailbox,
147 aac_sa_set_interrupts
148};
149
150/* i960Rx interface */
151static int aac_rx_get_fwstatus(struct aac_softc *sc);
152static void aac_rx_qnotify(struct aac_softc *sc, int qbit);
153static int aac_rx_get_istatus(struct aac_softc *sc);
154static void aac_rx_clear_istatus(struct aac_softc *sc, int mask);
155static void aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
156 u_int32_t arg0, u_int32_t arg1,
157 u_int32_t arg2, u_int32_t arg3);
158static int aac_rx_get_mailbox(struct aac_softc *sc, int mb);
159static void aac_rx_set_interrupts(struct aac_softc *sc, int enable);
160
161struct aac_interface aac_rx_interface = {
162 aac_rx_get_fwstatus,
163 aac_rx_qnotify,
164 aac_rx_get_istatus,
165 aac_rx_clear_istatus,
166 aac_rx_set_mailbox,
167 aac_rx_get_mailbox,
168 aac_rx_set_interrupts
169};
170
171/* Debugging and Diagnostics */
172static void aac_describe_controller(struct aac_softc *sc);
173static char *aac_describe_code(struct aac_code_lookup *table,
174 u_int32_t code);
175
176/* Management Interface */
177static d_open_t aac_open;
178static d_close_t aac_close;
179static d_ioctl_t aac_ioctl;
180static d_poll_t aac_poll;
181static int aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib);
182static void aac_handle_aif(struct aac_softc *sc,
183 struct aac_fib *fib);
184static int aac_rev_check(struct aac_softc *sc, caddr_t udata);
185static int aac_getnext_aif(struct aac_softc *sc, caddr_t arg);
186static int aac_return_aif(struct aac_softc *sc, caddr_t uptr);
187static int aac_query_disk(struct aac_softc *sc, caddr_t uptr);
188
189#define AAC_CDEV_MAJOR 150
190
fef8985e
MD
191static struct dev_ops aac_ops = {
192 { "aac", AAC_CDEV_MAJOR, 0 },
193 .d_open = aac_open,
194 .d_close = aac_close,
195 .d_ioctl = aac_ioctl,
196 .d_poll = aac_poll,
984263bc
MD
197};
198
32832096
MD
199DECLARE_DUMMY_MODULE(aac);
200
984263bc
MD
201MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver");
202
203/* sysctl node */
204SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters");
205
206/*
207 * Device Interface
208 */
209
210/*
211 * Initialise the controller and softc
212 */
213int
214aac_attach(struct aac_softc *sc)
215{
216 int error, unit;
217
218 debug_called(1);
9087698d 219 callout_init(&sc->aac_watchdog);
984263bc
MD
220
221 /*
222 * Initialise per-controller queues.
223 */
224 aac_initq_free(sc);
225 aac_initq_ready(sc);
226 aac_initq_busy(sc);
227 aac_initq_complete(sc);
228 aac_initq_bio(sc);
229
42cdd4ab 230#if defined(__FreeBSD__) && __FreeBSD_version >= 500005
984263bc
MD
231 /*
232 * Initialise command-completion task.
233 */
234 TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc);
235#endif
236
237 /* disable interrupts before we enable anything */
238 AAC_MASK_INTERRUPTS(sc);
239
240 /* mark controller as suspended until we get ourselves organised */
241 sc->aac_state |= AAC_STATE_SUSPEND;
242
243 /*
244 * Check that the firmware on the card is supported.
245 */
246 if ((error = aac_check_firmware(sc)) != 0)
247 return(error);
248
249 /* Init the sync fib lock */
250 AAC_LOCK_INIT(&sc->aac_sync_lock, "AAC sync FIB lock");
251
252 /*
253 * Initialise the adapter.
254 */
255 if ((error = aac_init(sc)) != 0)
256 return(error);
257
258 /*
259 * Print a little information about the controller.
260 */
261 aac_describe_controller(sc);
262
263 /*
264 * Register to probe our containers later.
265 */
266 TAILQ_INIT(&sc->aac_container_tqh);
267 AAC_LOCK_INIT(&sc->aac_container_lock, "AAC container lock");
268
269 /*
270 * Lock for the AIF queue
271 */
272 AAC_LOCK_INIT(&sc->aac_aifq_lock, "AAC AIF lock");
273
274 sc->aac_ich.ich_func = aac_startup;
275 sc->aac_ich.ich_arg = sc;
a1e26a0c 276 sc->aac_ich.ich_desc = "aac";
984263bc
MD
277 if (config_intrhook_establish(&sc->aac_ich) != 0) {
278 device_printf(sc->aac_dev,
279 "can't establish configuration hook\n");
280 return(ENXIO);
281 }
282
283 /*
284 * Make the control device.
285 */
286 unit = device_get_unit(sc->aac_dev);
fef8985e
MD
287 dev_ops_add(&aac_ops, -1, unit);
288 sc->aac_dev_t = make_dev(&aac_ops, unit, UID_ROOT, GID_WHEEL, 0644,
984263bc 289 "aac%d", unit);
42cdd4ab 290#if defined(__FreeBSD__) && __FreeBSD_version > 500005
984263bc
MD
291 (void)make_dev_alias(sc->aac_dev_t, "afa%d", unit);
292 (void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit);
293#endif
294 sc->aac_dev_t->si_drv1 = sc;
e4c9c0c8 295 reference_dev(sc->aac_dev_t);
984263bc
MD
296
297 /* Create the AIF thread */
42cdd4ab 298#if defined(__FreeBSD__) && __FreeBSD_version > 500005
984263bc
MD
299 if (kthread_create((void(*)(void *))aac_host_command, sc,
300 &sc->aifthread, 0, "aac%daif", unit))
301#else
302 if (kthread_create((void(*)(void *))aac_host_command, sc,
303 &sc->aifthread, "aac%daif", unit))
304#endif
305 panic("Could not create AIF thread\n");
306
307 /* Register the shutdown method to only be called post-dump */
87e2fa7e 308 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, aac_shutdown, sc->aac_dev,
30527035 309 SHUTDOWN_PRI_DRIVER)) == NULL)
984263bc
MD
310 device_printf(sc->aac_dev, "shutdown event registration failed\n");
311
312 /* Register with CAM for the non-DASD devices */
313 if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0)
314 aac_get_bus_info(sc);
315
316 return(0);
317}
318
319/*
320 * Probe for containers, create disks.
321 */
322static void
323aac_startup(void *arg)
324{
325 struct aac_softc *sc;
326 struct aac_fib *fib;
327 struct aac_mntinfo *mi;
328 struct aac_mntinforesp *mir = NULL;
158dbeb8
MD
329 int count = 0, i = 0;
330
984263bc
MD
331 debug_called(1);
332
333 sc = (struct aac_softc *)arg;
334
335 /* disconnect ourselves from the intrhook chain */
336 config_intrhook_disestablish(&sc->aac_ich);
337
338 aac_alloc_sync_fib(sc, &fib, 0);
339 mi = (struct aac_mntinfo *)&fib->data[0];
340
341 /* loop over possible containers */
342 do {
343 /* request information on this container */
344 bzero(mi, sizeof(struct aac_mntinfo));
345 mi->Command = VM_NameServe;
346 mi->MntType = FT_FILESYS;
347 mi->MntCount = i;
348 if (aac_sync_fib(sc, ContainerCommand, 0, fib,
349 sizeof(struct aac_mntinfo))) {
158dbeb8
MD
350 device_printf(sc->aac_dev,
351 "error probing container %d", i);
352
984263bc
MD
353 continue;
354 }
355
356 mir = (struct aac_mntinforesp *)&fib->data[0];
158dbeb8
MD
357 /* XXX Need to check if count changed */
358 count = mir->MntRespCount;
984263bc
MD
359 aac_add_container(sc, mir, 0);
360 i++;
158dbeb8 361 } while ((i < count) && (i < AAC_MAX_CONTAINERS));
984263bc
MD
362
363 aac_release_sync_fib(sc);
364
365 /* poke the bus to actually attach the child devices */
366 if (bus_generic_attach(sc->aac_dev))
367 device_printf(sc->aac_dev, "bus_generic_attach failed\n");
368
369 /* mark the controller up */
370 sc->aac_state &= ~AAC_STATE_SUSPEND;
371
372 /* enable interrupts now */
373 AAC_UNMASK_INTERRUPTS(sc);
374
375 /* enable the timeout watchdog */
9087698d
JS
376 callout_reset(&sc->aac_watchdog, AAC_PERIODIC_INTERVAL * hz,
377 aac_timeout, sc);
984263bc
MD
378}
379
380/*
381 * Create a device to respresent a new container
382 */
383static void
384aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f)
385{
386 struct aac_container *co;
387 device_t child;
388
389 /*
390 * Check container volume type for validity. Note that many of
391 * the possible types may never show up.
392 */
393 if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) {
394 MALLOC(co, struct aac_container *, sizeof *co, M_AACBUF,
076ae0ab 395 M_INTWAIT);
984263bc
MD
396 debug(1, "id %x name '%.16s' size %u type %d",
397 mir->MntTable[0].ObjectId,
398 mir->MntTable[0].FileSystemName,
399 mir->MntTable[0].Capacity, mir->MntTable[0].VolType);
400
401 if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL)
402 device_printf(sc->aac_dev, "device_add_child failed\n");
403 else
404 device_set_ivars(child, co);
405 device_set_desc(child, aac_describe_code(aac_container_types,
406 mir->MntTable[0].VolType));
407 co->co_disk = child;
408 co->co_found = f;
409 bcopy(&mir->MntTable[0], &co->co_mntobj,
410 sizeof(struct aac_mntobj));
411 AAC_LOCK_ACQUIRE(&sc->aac_container_lock);
412 TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link);
413 AAC_LOCK_RELEASE(&sc->aac_container_lock);
414 }
415}
416
417/*
418 * Free all of the resources associated with (sc)
419 *
420 * Should not be called if the controller is active.
421 */
422void
423aac_free(struct aac_softc *sc)
424{
425 debug_called(1);
426
427 /* remove the control device */
428 if (sc->aac_dev_t != NULL)
429 destroy_dev(sc->aac_dev_t);
430
431 /* throw away any FIB buffers, discard the FIB DMA tag */
432 if (sc->aac_fibs != NULL)
433 aac_free_commands(sc);
434 if (sc->aac_fib_dmat)
435 bus_dma_tag_destroy(sc->aac_fib_dmat);
436
437 /* destroy the common area */
438 if (sc->aac_common) {
439 bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap);
440 bus_dmamem_free(sc->aac_common_dmat, sc->aac_common,
441 sc->aac_common_dmamap);
442 }
443 if (sc->aac_common_dmat)
444 bus_dma_tag_destroy(sc->aac_common_dmat);
445
446 /* disconnect the interrupt handler */
447 if (sc->aac_intr)
448 bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr);
449 if (sc->aac_irq != NULL)
450 bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid,
451 sc->aac_irq);
452
453 /* destroy data-transfer DMA tag */
454 if (sc->aac_buffer_dmat)
455 bus_dma_tag_destroy(sc->aac_buffer_dmat);
456
457 /* destroy the parent DMA tag */
458 if (sc->aac_parent_dmat)
459 bus_dma_tag_destroy(sc->aac_parent_dmat);
460
461 /* release the register window mapping */
e4c9c0c8 462 if (sc->aac_regs_resource != NULL) {
984263bc
MD
463 bus_release_resource(sc->aac_dev, SYS_RES_MEMORY,
464 sc->aac_regs_rid, sc->aac_regs_resource);
e4c9c0c8 465 }
fef8985e 466 dev_ops_remove(&aac_ops, -1, device_get_unit(sc->aac_dev));
984263bc
MD
467}
468
469/*
470 * Disconnect from the controller completely, in preparation for unload.
471 */
472int
473aac_detach(device_t dev)
474{
475 struct aac_softc *sc;
476#if AAC_BROKEN
477 int error;
478#endif
479
480 debug_called(1);
481
482 sc = device_get_softc(dev);
483
9087698d
JS
484 callout_stop(&sc->aac_watchdog);
485
984263bc
MD
486 if (sc->aac_state & AAC_STATE_OPEN)
487 return(EBUSY);
488
489#if AAC_BROKEN
490 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) {
491 sc->aifflags |= AAC_AIFFLAGS_EXIT;
492 wakeup(sc->aifthread);
377d4740 493 tsleep(sc->aac_dev, PCATCH, "aacdch", 30 * hz);
984263bc
MD
494 }
495
496 if (sc->aifflags & AAC_AIFFLAGS_RUNNING)
497 panic("Cannot shutdown AIF thread\n");
498
499 if ((error = aac_shutdown(dev)))
500 return(error);
501
502 aac_free(sc);
503
504 return(0);
505#else
506 return (EBUSY);
507#endif
508}
509
510/*
511 * Bring the controller down to a dormant state and detach all child devices.
512 *
513 * This function is called before detach or system shutdown.
514 *
515 * Note that we can assume that the bioq on the controller is empty, as we won't
516 * allow shutdown if any device is open.
517 */
09ccaff3 518static int
984263bc
MD
519aac_shutdown(device_t dev)
520{
521 struct aac_softc *sc;
522 struct aac_fib *fib;
523 struct aac_close_command *cc;
984263bc
MD
524
525 debug_called(1);
526
527 sc = device_get_softc(dev);
528
7f2216bc 529 crit_enter();
984263bc
MD
530
531 sc->aac_state |= AAC_STATE_SUSPEND;
532
533 /*
534 * Send a Container shutdown followed by a HostShutdown FIB to the
535 * controller to convince it that we don't want to talk to it anymore.
536 * We've been closed and all I/O completed already
537 */
538 device_printf(sc->aac_dev, "shutting down controller...");
539
540 aac_alloc_sync_fib(sc, &fib, AAC_SYNC_LOCK_FORCE);
541 cc = (struct aac_close_command *)&fib->data[0];
542
543 bzero(cc, sizeof(struct aac_close_command));
544 cc->Command = VM_CloseAll;
545 cc->ContainerId = 0xffffffff;
546 if (aac_sync_fib(sc, ContainerCommand, 0, fib,
547 sizeof(struct aac_close_command)))
e3869ec7 548 kprintf("FAILED.\n");
984263bc
MD
549 else {
550 fib->data[0] = 0;
551 /*
552 * XXX Issuing this command to the controller makes it shut down
553 * but also keeps it from coming back up without a reset of the
554 * PCI bus. This is not desirable if you are just unloading the
555 * driver module with the intent to reload it later.
556 */
557 if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN,
558 fib, 1)) {
e3869ec7 559 kprintf("FAILED.\n");
984263bc 560 } else {
e3869ec7 561 kprintf("done.\n");
984263bc
MD
562 }
563 }
564
565 AAC_MASK_INTERRUPTS(sc);
566
7f2216bc 567 crit_exit();
984263bc
MD
568 return(0);
569}
570
571/*
572 * Bring the controller to a quiescent state, ready for system suspend.
573 */
574int
575aac_suspend(device_t dev)
576{
577 struct aac_softc *sc;
984263bc
MD
578
579 debug_called(1);
580
581 sc = device_get_softc(dev);
582
7f2216bc 583 crit_enter();
984263bc
MD
584
585 sc->aac_state |= AAC_STATE_SUSPEND;
586
587 AAC_MASK_INTERRUPTS(sc);
7f2216bc 588 crit_exit();
984263bc
MD
589 return(0);
590}
591
592/*
593 * Bring the controller back to a state ready for operation.
594 */
595int
596aac_resume(device_t dev)
597{
598 struct aac_softc *sc;
599
600 debug_called(1);
601
602 sc = device_get_softc(dev);
603
604 sc->aac_state &= ~AAC_STATE_SUSPEND;
605 AAC_UNMASK_INTERRUPTS(sc);
606 return(0);
607}
608
609/*
610 * Take an interrupt.
611 */
612void
613aac_intr(void *arg)
614{
615 struct aac_softc *sc;
616 u_int16_t reason;
617 u_int32_t *resp_queue;
618
619 debug_called(2);
620
621 sc = (struct aac_softc *)arg;
622
623 /*
624 * Optimize the common case of adapter response interrupts.
625 * We must read from the card prior to processing the responses
626 * to ensure the clear is flushed prior to accessing the queues.
627 * Reading the queues from local memory might save us a PCI read.
628 */
629 resp_queue = sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE];
630 if (resp_queue[AAC_PRODUCER_INDEX] != resp_queue[AAC_CONSUMER_INDEX])
631 reason = AAC_DB_RESPONSE_READY;
632 else
633 reason = AAC_GET_ISTATUS(sc);
634 AAC_CLEAR_ISTATUS(sc, reason);
635 (void)AAC_GET_ISTATUS(sc);
636
637 /* It's not ok to return here because of races with the previous step */
638 if (reason & AAC_DB_RESPONSE_READY)
639 aac_host_response(sc);
640
641 /* controller wants to talk to the log */
642 if (reason & AAC_DB_PRINTF)
643 aac_print_printf(sc);
644
645 /* controller has a message for us? */
646 if (reason & AAC_DB_COMMAND_READY) {
647 /* XXX What happens if the thread is already awake? */
648 if (sc->aifflags & AAC_AIFFLAGS_RUNNING) {
649 sc->aifflags |= AAC_AIFFLAGS_PENDING;
650 wakeup(sc->aifthread);
651 }
652 }
653}
654
655/*
656 * Command Processing
657 */
658
659/*
660 * Start as much queued I/O as possible on the controller
661 */
662void
663aac_startio(struct aac_softc *sc)
664{
665 struct aac_command *cm;
666
667 debug_called(2);
668
669 for (;;) {
670 /*
671 * Try to get a command that's been put off for lack of
672 * resources
673 */
674 cm = aac_dequeue_ready(sc);
675
676 /*
677 * Try to build a command off the bio queue (ignore error
678 * return)
679 */
680 if (cm == NULL)
681 aac_bio_command(sc, &cm);
682
683 /* nothing to do? */
684 if (cm == NULL)
685 break;
686
687 /* try to give the command to the controller */
688 if (aac_start(cm) == EBUSY) {
689 /* put it on the ready queue for later */
690 aac_requeue_ready(cm);
691 break;
692 }
693 }
694}
695
696/*
697 * Deliver a command to the controller; allocate controller resources at the
698 * last moment when possible.
699 */
700static int
701aac_start(struct aac_command *cm)
702{
703 struct aac_softc *sc;
704 int error;
705
706 debug_called(2);
707
708 sc = cm->cm_sc;
709
710 /* get the command mapped */
711 aac_map_command(cm);
712
713 /* fix up the address values in the FIB */
714 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib;
715 cm->cm_fib->Header.ReceiverFibAddress = cm->cm_fibphys;
716
717 /* save a pointer to the command for speedy reverse-lookup */
718 cm->cm_fib->Header.SenderData = (u_int32_t)cm; /* XXX 64-bit physical
719 * address issue */
720 /* put the FIB on the outbound queue */
721 error = aac_enqueue_fib(sc, cm->cm_queue, cm);
722 return(error);
723}
724
725/*
726 * Handle notification of one or more FIBs coming from the controller.
727 */
728static void
729aac_host_command(struct aac_softc *sc)
730{
731 struct aac_fib *fib;
732 u_int32_t fib_size;
733 int size;
734
735 debug_called(2);
736
737 sc->aifflags |= AAC_AIFFLAGS_RUNNING;
738
739 while (!(sc->aifflags & AAC_AIFFLAGS_EXIT)) {
740 if (!(sc->aifflags & AAC_AIFFLAGS_PENDING))
377d4740 741 tsleep(sc->aifthread, 0, "aifthd", 15 * hz);
984263bc
MD
742
743 sc->aifflags &= ~AAC_AIFFLAGS_PENDING;
744 for (;;) {
745 if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE,
746 &fib_size, &fib))
747 break; /* nothing to do */
748
749 AAC_PRINT_FIB(sc, fib);
750
751 switch (fib->Header.Command) {
752 case AifRequest:
753 aac_handle_aif(sc, fib);
754 break;
755 default:
756 device_printf(sc->aac_dev, "unknown command "
757 "from controller\n");
758 break;
759 }
760
761 /* Return the AIF to the controller. */
762 if ((fib->Header.XferState == 0) ||
763 (fib->Header.StructType != AAC_FIBTYPE_TFIB))
764 break;
765
766 if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) {
767 fib->Header.XferState |= AAC_FIBSTATE_DONEHOST;
768 *(AAC_FSAStatus*)fib->data = ST_OK;
769
770 /* XXX Compute the Size field? */
771 size = fib->Header.Size;
772 if (size > sizeof(struct aac_fib)) {
773 size = sizeof(struct aac_fib);
774 fib->Header.Size = size;
775 }
776 /*
777 * Since we did not generate this command, it
778 * cannot go through the normal
779 * enqueue->startio chain.
780 */
781 aac_enqueue_response(sc,
782 AAC_ADAP_NORM_RESP_QUEUE,
783 fib);
784 }
785 }
786 }
787 sc->aifflags &= ~AAC_AIFFLAGS_RUNNING;
788 wakeup(sc->aac_dev);
789
42cdd4ab 790#if defined(__FreeBSD__) && __FreeBSD_version > 500005
984263bc
MD
791 mtx_lock(&Giant);
792#endif
0cfcada1 793 kthread_exit();
984263bc
MD
794}
795
796/*
797 * Handle notification of one or more FIBs completed by the controller
798 */
799static void
800aac_host_response(struct aac_softc *sc)
801{
802 struct aac_command *cm;
803 struct aac_fib *fib;
804 u_int32_t fib_size;
805
806 debug_called(2);
807
808 for (;;) {
809 /* look for completed FIBs on our queue */
810 if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size,
811 &fib))
812 break; /* nothing to do */
813
814 /* get the command, unmap and queue for later processing */
815 cm = (struct aac_command *)fib->Header.SenderData;
816 if (cm == NULL) {
817 AAC_PRINT_FIB(sc, fib);
818 } else {
819 aac_remove_busy(cm);
820 aac_unmap_command(cm); /* XXX defer? */
821 aac_enqueue_complete(cm);
822 }
823 }
824
825 /* handle completion processing */
42cdd4ab 826#if defined(__FreeBSD__) && __FreeBSD_version >= 500005
984263bc
MD
827 taskqueue_enqueue(taskqueue_swi, &sc->aac_task_complete);
828#else
829 aac_complete(sc, 0);
830#endif
831}
832
833/*
834 * Process completed commands.
835 */
836static void
837aac_complete(void *context, int pending)
838{
839 struct aac_softc *sc;
840 struct aac_command *cm;
841
842 debug_called(2);
843
844 sc = (struct aac_softc *)context;
845
846 /* pull completed commands off the queue */
847 for (;;) {
848 cm = aac_dequeue_complete(sc);
849 if (cm == NULL)
850 break;
851 cm->cm_flags |= AAC_CMD_COMPLETED;
852
853 /* is there a completion handler? */
854 if (cm->cm_complete != NULL) {
855 cm->cm_complete(cm);
856 } else {
857 /* assume that someone is sleeping on this command */
858 wakeup(cm);
859 }
860 }
861
862 /* see if we can start some more I/O */
863 aac_startio(sc);
864}
865
866/*
867 * Handle a bio submitted from a disk device.
868 */
869void
81b5c339 870aac_submit_bio(struct aac_disk *ad, struct bio *bio)
984263bc 871{
984263bc
MD
872 struct aac_softc *sc;
873
874 debug_called(2);
875
81b5c339 876 bio->bio_driver_info = ad;
984263bc
MD
877 sc = ad->ad_controller;
878
879 /* queue the BIO and try to get some work done */
81b5c339 880 aac_enqueue_bio(sc, bio);
984263bc
MD
881 aac_startio(sc);
882}
883
884/*
885 * Get a bio and build a command to go with it.
886 */
887static int
888aac_bio_command(struct aac_softc *sc, struct aac_command **cmp)
889{
890 struct aac_command *cm;
891 struct aac_fib *fib;
892 struct aac_blockread *br;
893 struct aac_blockwrite *bw;
894 struct aac_disk *ad;
81b5c339 895 struct bio *bio;
1eabbf32 896 struct buf *bp;
984263bc
MD
897
898 debug_called(2);
899
900 /* get the resources we will need */
901 cm = NULL;
81b5c339 902 if ((bio = aac_dequeue_bio(sc)) == NULL)
984263bc
MD
903 goto fail;
904 if (aac_alloc_command(sc, &cm)) /* get a command */
905 goto fail;
906
907 /* fill out the command */
81b5c339 908 bp = bio->bio_buf;
1eabbf32
HP
909 cm->cm_data = (void *)bp->b_data;
910 cm->cm_datalen = bp->b_bcount;
984263bc 911 cm->cm_complete = aac_bio_complete;
81b5c339 912 cm->cm_private = bio;
984263bc
MD
913 cm->cm_timestamp = time_second;
914 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
915
916 /* build the FIB */
917 fib = cm->cm_fib;
918 fib->Header.XferState =
919 AAC_FIBSTATE_HOSTOWNED |
920 AAC_FIBSTATE_INITIALISED |
921 AAC_FIBSTATE_EMPTY |
922 AAC_FIBSTATE_FROMHOST |
923 AAC_FIBSTATE_REXPECTED |
924 AAC_FIBSTATE_NORM |
925 AAC_FIBSTATE_ASYNC |
926 AAC_FIBSTATE_FAST_RESPONSE;
927 fib->Header.Command = ContainerCommand;
928 fib->Header.Size = sizeof(struct aac_fib_header);
929
930 /* build the read/write request */
81b5c339 931 ad = (struct aac_disk *)bio->bio_driver_info;
10f3fee5 932 if (bp->b_cmd == BUF_CMD_READ) {
984263bc
MD
933 br = (struct aac_blockread *)&fib->data[0];
934 br->Command = VM_CtBlockRead;
935 br->ContainerId = ad->ad_container->co_mntobj.ObjectId;
54078292 936 br->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
1eabbf32 937 br->ByteCount = bp->b_bcount;
984263bc
MD
938 fib->Header.Size += sizeof(struct aac_blockread);
939 cm->cm_sgtable = &br->SgMap;
940 cm->cm_flags |= AAC_CMD_DATAIN;
941 } else {
942 bw = (struct aac_blockwrite *)&fib->data[0];
943 bw->Command = VM_CtBlockWrite;
944 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
54078292 945 bw->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
1eabbf32 946 bw->ByteCount = bp->b_bcount;
984263bc
MD
947 bw->Stable = CUNSTABLE; /* XXX what's appropriate here? */
948 fib->Header.Size += sizeof(struct aac_blockwrite);
949 cm->cm_flags |= AAC_CMD_DATAOUT;
950 cm->cm_sgtable = &bw->SgMap;
951 }
952
953 *cmp = cm;
954 return(0);
955
956fail:
81b5c339
MD
957 if (bio != NULL)
958 aac_enqueue_bio(sc, bio);
984263bc
MD
959 if (cm != NULL)
960 aac_release_command(cm);
961 return(ENOMEM);
962}
963
964/*
965 * Handle a bio-instigated command that has been completed.
966 */
967static void
968aac_bio_complete(struct aac_command *cm)
969{
970 struct aac_blockread_response *brr;
971 struct aac_blockwrite_response *bwr;
81b5c339 972 struct bio *bio;
1eabbf32 973 struct buf *bp;
81b5c339 974 const char *code;
984263bc
MD
975 AAC_FSAStatus status;
976
977 /* fetch relevant status and then release the command */
81b5c339
MD
978 bio = (struct bio *)cm->cm_private;
979 bp = bio->bio_buf;
10f3fee5 980 if (bp->b_cmd == BUF_CMD_READ) {
984263bc
MD
981 brr = (struct aac_blockread_response *)&cm->cm_fib->data[0];
982 status = brr->Status;
983 } else {
984 bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0];
985 status = bwr->Status;
986 }
987 aac_release_command(cm);
988
989 /* fix up the bio based on status */
990 if (status == ST_OK) {
1eabbf32 991 bp->b_resid = 0;
81b5c339 992 code = 0;
984263bc 993 } else {
1eabbf32
HP
994 bp->b_error = EIO;
995 bp->b_flags |= B_ERROR;
984263bc 996 /* pass an error string out to the disk layer */
81b5c339 997 code = aac_describe_code(aac_command_status_table, status);
984263bc 998 }
81b5c339 999 aac_biodone(bio, code);
984263bc
MD
1000}
1001
1002/*
1003 * Dump a block of data to the controller. If the queue is full, tell the
1004 * caller to hold off and wait for the queue to drain.
1005 */
1006int
e0fc5693 1007aac_dump_enqueue(struct aac_disk *ad, u_int64_t lba, void *data, int dumppages)
984263bc
MD
1008{
1009 struct aac_softc *sc;
1010 struct aac_command *cm;
1011 struct aac_fib *fib;
1012 struct aac_blockwrite *bw;
1013
1014 sc = ad->ad_controller;
1015 cm = NULL;
1016
e0fc5693
MD
1017 KKASSERT(lba <= 0x100000000ULL);
1018
984263bc
MD
1019 if (aac_alloc_command(sc, &cm))
1020 return (EBUSY);
1021
1022 /* fill out the command */
1023 cm->cm_data = data;
1024 cm->cm_datalen = dumppages * PAGE_SIZE;
1025 cm->cm_complete = NULL;
1026 cm->cm_private = NULL;
1027 cm->cm_timestamp = time_second;
1028 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
1029
1030 /* build the FIB */
1031 fib = cm->cm_fib;
1032 fib->Header.XferState =
1033 AAC_FIBSTATE_HOSTOWNED |
1034 AAC_FIBSTATE_INITIALISED |
1035 AAC_FIBSTATE_FROMHOST |
1036 AAC_FIBSTATE_REXPECTED |
1037 AAC_FIBSTATE_NORM;
1038 fib->Header.Command = ContainerCommand;
1039 fib->Header.Size = sizeof(struct aac_fib_header);
1040
1041 bw = (struct aac_blockwrite *)&fib->data[0];
1042 bw->Command = VM_CtBlockWrite;
1043 bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1044 bw->BlockNumber = lba;
1045 bw->ByteCount = dumppages * PAGE_SIZE;
1046 bw->Stable = CUNSTABLE; /* XXX what's appropriate here? */
1047 fib->Header.Size += sizeof(struct aac_blockwrite);
1048 cm->cm_flags |= AAC_CMD_DATAOUT;
1049 cm->cm_sgtable = &bw->SgMap;
1050
1051 return (aac_start(cm));
1052}
1053
1054/*
1055 * Wait for the card's queue to drain when dumping. Also check for monitor
e3869ec7 1056 * kprintf's
984263bc
MD
1057 */
1058void
1059aac_dump_complete(struct aac_softc *sc)
1060{
1061 struct aac_fib *fib;
1062 struct aac_command *cm;
1063 u_int16_t reason;
1064 u_int32_t pi, ci, fib_size;
1065
1066 do {
1067 reason = AAC_GET_ISTATUS(sc);
1068 if (reason & AAC_DB_RESPONSE_READY) {
1069 AAC_CLEAR_ISTATUS(sc, AAC_DB_RESPONSE_READY);
1070 for (;;) {
1071 if (aac_dequeue_fib(sc,
1072 AAC_HOST_NORM_RESP_QUEUE,
1073 &fib_size, &fib))
1074 break;
1075 cm = (struct aac_command *)
1076 fib->Header.SenderData;
1077 if (cm == NULL)
1078 AAC_PRINT_FIB(sc, fib);
1079 else {
1080 aac_remove_busy(cm);
1081 aac_unmap_command(cm);
1082 aac_enqueue_complete(cm);
1083 aac_release_command(cm);
1084 }
1085 }
1086 }
1087 if (reason & AAC_DB_PRINTF) {
1088 AAC_CLEAR_ISTATUS(sc, AAC_DB_PRINTF);
1089 aac_print_printf(sc);
1090 }
1091 pi = sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][
1092 AAC_PRODUCER_INDEX];
1093 ci = sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][
1094 AAC_CONSUMER_INDEX];
1095 } while (ci != pi);
1096
1097 return;
1098}
1099
1100/*
1101 * Submit a command to the controller, return when it completes.
1102 * XXX This is very dangerous! If the card has gone out to lunch, we could
1103 * be stuck here forever. At the same time, signals are not caught
1104 * because there is a risk that a signal could wakeup the tsleep before
1105 * the card has a chance to complete the command. The passed in timeout
1106 * is ignored for the same reason. Since there is no way to cancel a
1107 * command in progress, we should probably create a 'dead' queue where
1108 * commands go that have been interrupted/timed-out/etc, that keeps them
1109 * out of the free pool. That way, if the card is just slow, it won't
1110 * spam the memory of a command that has been recycled.
1111 */
1112static int
1113aac_wait_command(struct aac_command *cm, int timeout)
1114{
7f2216bc 1115 int error = 0;
984263bc
MD
1116
1117 debug_called(2);
1118
1119 /* Put the command on the ready queue and get things going */
1120 cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
1121 aac_enqueue_ready(cm);
1122 aac_startio(cm->cm_sc);
7f2216bc 1123 crit_enter();
984263bc 1124 while (!(cm->cm_flags & AAC_CMD_COMPLETED) && (error != EWOULDBLOCK)) {
377d4740 1125 error = tsleep(cm, 0, "aacwait", 0);
984263bc 1126 }
7f2216bc 1127 crit_exit();
984263bc
MD
1128 return(error);
1129}
1130
1131/*
1132 *Command Buffer Management
1133 */
1134
1135/*
1136 * Allocate a command.
1137 */
1138int
1139aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp)
1140{
1141 struct aac_command *cm;
1142
1143 debug_called(3);
1144
1145 if ((cm = aac_dequeue_free(sc)) == NULL)
1146 return(ENOMEM);
1147
1148 *cmp = cm;
1149 return(0);
1150}
1151
1152/*
1153 * Release a command back to the freelist.
1154 */
1155void
1156aac_release_command(struct aac_command *cm)
1157{
1158 debug_called(3);
1159
1160 /* (re)initialise the command/FIB */
1161 cm->cm_sgtable = NULL;
1162 cm->cm_flags = 0;
1163 cm->cm_complete = NULL;
1164 cm->cm_private = NULL;
1165 cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY;
1166 cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB;
1167 cm->cm_fib->Header.Flags = 0;
1168 cm->cm_fib->Header.SenderSize = sizeof(struct aac_fib);
1169
1170 /*
1171 * These are duplicated in aac_start to cover the case where an
1172 * intermediate stage may have destroyed them. They're left
1173 * initialised here for debugging purposes only.
1174 */
1175 cm->cm_fib->Header.SenderFibAddress = (u_int32_t)cm->cm_fib;
1176 cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys;
1177 cm->cm_fib->Header.SenderData = 0;
1178
1179 aac_enqueue_free(cm);
1180}
1181
1182/*
1183 * Map helper for command/FIB allocation.
1184 */
1185static void
1186aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1187{
1188 struct aac_softc *sc;
1189
1190 sc = (struct aac_softc *)arg;
1191
1192 debug_called(3);
1193
1194 sc->aac_fibphys = segs[0].ds_addr;
1195}
1196
1197/*
1198 * Allocate and initialise commands/FIBs for this adapter.
1199 */
1200static int
1201aac_alloc_commands(struct aac_softc *sc)
1202{
1203 struct aac_command *cm;
1204 int i;
1205
1206 debug_called(1);
1207
1208 /* allocate the FIBs in DMAable memory and load them */
1209 if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&sc->aac_fibs,
1210 BUS_DMA_NOWAIT, &sc->aac_fibmap)) {
1211 return(ENOMEM);
1212 }
1213
1214 bus_dmamap_load(sc->aac_fib_dmat, sc->aac_fibmap, sc->aac_fibs,
1215 AAC_FIB_COUNT * sizeof(struct aac_fib),
1216 aac_map_command_helper, sc, 0);
1217
1218 /* initialise constant fields in the command structure */
1219 bzero(sc->aac_fibs, AAC_FIB_COUNT * sizeof(struct aac_fib));
1220 for (i = 0; i < AAC_FIB_COUNT; i++) {
1221 cm = &sc->aac_command[i];
1222 cm->cm_sc = sc;
1223 cm->cm_fib = sc->aac_fibs + i;
1224 cm->cm_fibphys = sc->aac_fibphys + (i * sizeof(struct aac_fib));
1225
1226 if (!bus_dmamap_create(sc->aac_buffer_dmat, 0, &cm->cm_datamap))
1227 aac_release_command(cm);
1228 }
1229 return(0);
1230}
1231
1232/*
1233 * Free FIBs owned by this adapter.
1234 */
1235static void
1236aac_free_commands(struct aac_softc *sc)
1237{
1238 int i;
1239
1240 debug_called(1);
1241
1242 for (i = 0; i < AAC_FIB_COUNT; i++)
1243 bus_dmamap_destroy(sc->aac_buffer_dmat,
1244 sc->aac_command[i].cm_datamap);
1245
1246 bus_dmamap_unload(sc->aac_fib_dmat, sc->aac_fibmap);
1247 bus_dmamem_free(sc->aac_fib_dmat, sc->aac_fibs, sc->aac_fibmap);
1248}
1249
1250/*
1251 * Command-mapping helper function - populate this command's s/g table.
1252 */
1253static void
1254aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1255{
1256 struct aac_command *cm;
1257 struct aac_fib *fib;
1258 struct aac_sg_table *sg;
1259 int i;
1260
1261 debug_called(3);
1262
1263 cm = (struct aac_command *)arg;
1264 fib = cm->cm_fib;
1265
1266 /* find the s/g table */
1267 sg = cm->cm_sgtable;
1268
1269 /* copy into the FIB */
1270 if (sg != NULL) {
1271 sg->SgCount = nseg;
1272 for (i = 0; i < nseg; i++) {
1273 sg->SgEntry[i].SgAddress = segs[i].ds_addr;
1274 sg->SgEntry[i].SgByteCount = segs[i].ds_len;
1275 }
1276 /* update the FIB size for the s/g count */
1277 fib->Header.Size += nseg * sizeof(struct aac_sg_entry);
1278 }
1279
1280}
1281
1282/*
1283 * Map a command into controller-visible space.
1284 */
1285static void
1286aac_map_command(struct aac_command *cm)
1287{
1288 struct aac_softc *sc;
1289
1290 debug_called(2);
1291
1292 sc = cm->cm_sc;
1293
1294 /* don't map more than once */
1295 if (cm->cm_flags & AAC_CMD_MAPPED)
1296 return;
1297
1298 if (cm->cm_datalen != 0) {
1299 bus_dmamap_load(sc->aac_buffer_dmat, cm->cm_datamap,
1300 cm->cm_data, cm->cm_datalen,
1301 aac_map_command_sg, cm, 0);
1302
1303 if (cm->cm_flags & AAC_CMD_DATAIN)
1304 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1305 BUS_DMASYNC_PREREAD);
1306 if (cm->cm_flags & AAC_CMD_DATAOUT)
1307 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1308 BUS_DMASYNC_PREWRITE);
1309 }
1310 cm->cm_flags |= AAC_CMD_MAPPED;
1311}
1312
1313/*
1314 * Unmap a command from controller-visible space.
1315 */
1316static void
1317aac_unmap_command(struct aac_command *cm)
1318{
1319 struct aac_softc *sc;
1320
1321 debug_called(2);
1322
1323 sc = cm->cm_sc;
1324
1325 if (!(cm->cm_flags & AAC_CMD_MAPPED))
1326 return;
1327
1328 if (cm->cm_datalen != 0) {
1329 if (cm->cm_flags & AAC_CMD_DATAIN)
1330 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1331 BUS_DMASYNC_POSTREAD);
1332 if (cm->cm_flags & AAC_CMD_DATAOUT)
1333 bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1334 BUS_DMASYNC_POSTWRITE);
1335
1336 bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap);
1337 }
1338 cm->cm_flags &= ~AAC_CMD_MAPPED;
1339}
1340
1341/*
1342 * Hardware Interface
1343 */
1344
1345/*
1346 * Initialise the adapter.
1347 */
1348static void
1349aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1350{
1351 struct aac_softc *sc;
1352
1353 debug_called(1);
1354
1355 sc = (struct aac_softc *)arg;
1356
1357 sc->aac_common_busaddr = segs[0].ds_addr;
1358}
1359
1360static int
1361aac_check_firmware(struct aac_softc *sc)
1362{
1363 u_int32_t major, minor, options;
1364
1365 debug_called(1);
1366
1367 /*
1368 * Retrieve the firmware version numbers. Dell PERC2/QC cards with
1369 * firmware version 1.x are not compatible with this driver.
1370 */
1371 if (sc->flags & AAC_FLAGS_PERC2QC) {
1372 if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0,
1373 NULL)) {
1374 device_printf(sc->aac_dev,
1375 "Error reading firmware version\n");
1376 return (EIO);
1377 }
1378
1379 /* These numbers are stored as ASCII! */
1380 major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30;
1381 minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30;
1382 if (major == 1) {
1383 device_printf(sc->aac_dev,
1384 "Firmware version %d.%d is not supported.\n",
1385 major, minor);
1386 return (EINVAL);
1387 }
1388 }
1389
1390 /*
1391 * Retrieve the capabilities/supported options word so we know what
1392 * work-arounds to enable.
1393 */
1394 if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, NULL)) {
1395 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n");
1396 return (EIO);
1397 }
1398 options = AAC_GET_MAILBOX(sc, 1);
1399 sc->supported_options = options;
1400
1401 if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 &&
1402 (sc->flags & AAC_FLAGS_NO4GB) == 0)
1403 sc->flags |= AAC_FLAGS_4GB_WINDOW;
1404 if (options & AAC_SUPPORTED_NONDASD)
1405 sc->flags |= AAC_FLAGS_ENABLE_CAM;
1406
1407 return (0);
1408}
1409
1410static int
1411aac_init(struct aac_softc *sc)
1412{
1413 struct aac_adapter_init *ip;
1414 time_t then;
1415 u_int32_t code;
1416 u_int8_t *qaddr;
1417 int error;
1418
1419 debug_called(1);
1420
1421 /*
1422 * First wait for the adapter to come ready.
1423 */
1424 then = time_second;
1425 do {
1426 code = AAC_GET_FWSTATUS(sc);
1427 if (code & AAC_SELF_TEST_FAILED) {
1428 device_printf(sc->aac_dev, "FATAL: selftest failed\n");
1429 return(ENXIO);
1430 }
1431 if (code & AAC_KERNEL_PANIC) {
1432 device_printf(sc->aac_dev,
1433 "FATAL: controller kernel panic\n");
1434 return(ENXIO);
1435 }
1436 if (time_second > (then + AAC_BOOT_TIMEOUT)) {
1437 device_printf(sc->aac_dev,
1438 "FATAL: controller not coming ready, "
1439 "status %x\n", code);
1440 return(ENXIO);
1441 }
1442 } while (!(code & AAC_UP_AND_RUNNING));
1443
1444 error = ENOMEM;
1445 /*
1446 * Create DMA tag for mapping buffers into controller-addressable space.
1447 */
1448 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */
1449 1, 0, /* algnmnt, boundary */
1450 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1451 BUS_SPACE_MAXADDR, /* highaddr */
1452 NULL, NULL, /* filter, filterarg */
1453 MAXBSIZE, /* maxsize */
1454 AAC_MAXSGENTRIES, /* nsegments */
1455 MAXBSIZE, /* maxsegsize */
1456 BUS_DMA_ALLOCNOW, /* flags */
1457 &sc->aac_buffer_dmat)) {
1458 device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n");
1459 goto out;
1460 }
1461
1462 /*
1463 * Create DMA tag for mapping FIBs into controller-addressable space..
1464 */
1465 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */
1466 1, 0, /* algnmnt, boundary */
1467 (sc->flags & AAC_FLAGS_4GB_WINDOW) ?
1468 BUS_SPACE_MAXADDR_32BIT :
1469 0x7fffffff, /* lowaddr */
1470 BUS_SPACE_MAXADDR, /* highaddr */
1471 NULL, NULL, /* filter, filterarg */
1472 AAC_FIB_COUNT *
1473 sizeof(struct aac_fib), /* maxsize */
1474 1, /* nsegments */
1475 AAC_FIB_COUNT *
1476 sizeof(struct aac_fib), /* maxsegsize */
1477 BUS_DMA_ALLOCNOW, /* flags */
1478 &sc->aac_fib_dmat)) {
fc6d0222 1479 device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");
984263bc
MD
1480 goto out;
1481 }
1482
1483 /*
1484 * Create DMA tag for the common structure and allocate it.
1485 */
1486 if (bus_dma_tag_create(sc->aac_parent_dmat, /* parent */
1487 1, 0, /* algnmnt, boundary */
1488 (sc->flags & AAC_FLAGS_4GB_WINDOW) ?
1489 BUS_SPACE_MAXADDR_32BIT :
1490 0x7fffffff, /* lowaddr */
1491 BUS_SPACE_MAXADDR, /* highaddr */
1492 NULL, NULL, /* filter, filterarg */
1493 8192 + sizeof(struct aac_common), /* maxsize */
1494 1, /* nsegments */
1495 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1496 BUS_DMA_ALLOCNOW, /* flags */
1497 &sc->aac_common_dmat)) {
1498 device_printf(sc->aac_dev,
1499 "can't allocate common structure DMA tag\n");
1500 goto out;
1501 }
1502 if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common,
1503 BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) {
1504 device_printf(sc->aac_dev, "can't allocate common structure\n");
1505 goto out;
1506 }
1507 /*
1508 * Work around a bug in the 2120 and 2200 that cannot DMA commands
1509 * below address 8192 in physical memory.
1510 * XXX If the padding is not needed, can it be put to use instead
1511 * of ignored?
1512 */
1513 bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap,
1514 sc->aac_common, 8192 + sizeof(*sc->aac_common),
1515 aac_common_map, sc, 0);
1516
1517 if (sc->aac_common_busaddr < 8192) {
032ae144
JS
1518 sc->aac_common =
1519 (struct aac_common *)((uint8_t *)sc->aac_common + 8192);
984263bc
MD
1520 sc->aac_common_busaddr += 8192;
1521 }
1522 bzero(sc->aac_common, sizeof(*sc->aac_common));
1523
1524 /* Allocate some FIBs and associated command structs */
1525 if (aac_alloc_commands(sc) != 0)
1526 goto out;
1527
1528 /*
1529 * Fill in the init structure. This tells the adapter about the
1530 * physical location of various important shared data structures.
1531 */
1532 ip = &sc->aac_common->ac_init;
1533 ip->InitStructRevision = AAC_INIT_STRUCT_REVISION;
1534 ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION;
1535
1536 ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr +
1537 offsetof(struct aac_common, ac_fibs);
f15db79e 1538 ip->AdapterFibsVirtualAddress = (aac_phys_addr_t)&sc->aac_common->ac_fibs[0];
984263bc
MD
1539 ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib);
1540 ip->AdapterFibAlign = sizeof(struct aac_fib);
1541
1542 ip->PrintfBufferAddress = sc->aac_common_busaddr +
1543 offsetof(struct aac_common, ac_printf);
1544 ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE;
1545
1546 /* The adapter assumes that pages are 4K in size */
31c33cf2
MD
1547 /* XXX why should the adapter care? */
1548 ip->HostPhysMemPages = ctob((int)Maxmem) / AAC_PAGE_SIZE;
984263bc
MD
1549 ip->HostElapsedSeconds = time_second; /* reset later if invalid */
1550
1551 /*
1552 * Initialise FIB queues. Note that it appears that the layout of the
1553 * indexes and the segmentation of the entries may be mandated by the
1554 * adapter, which is only told about the base of the queue index fields.
1555 *
1556 * The initial values of the indices are assumed to inform the adapter
1557 * of the sizes of the respective queues, and theoretically it could
1558 * work out the entire layout of the queue structures from this. We
1559 * take the easy route and just lay this area out like everyone else
1560 * does.
1561 *
1562 * The Linux driver uses a much more complex scheme whereby several
1563 * header records are kept for each queue. We use a couple of generic
1564 * list manipulation functions which 'know' the size of each list by
1565 * virtue of a table.
1566 */
1567 qaddr = &sc->aac_common->ac_qbuf[0] + AAC_QUEUE_ALIGN;
1568 qaddr -= (u_int32_t)qaddr % AAC_QUEUE_ALIGN;
1569 sc->aac_queues = (struct aac_queue_table *)qaddr;
1570 ip->CommHeaderAddress = sc->aac_common_busaddr +
1571 ((u_int32_t)sc->aac_queues -
1572 (u_int32_t)sc->aac_common);
1573 bzero(sc->aac_queues, sizeof(struct aac_queue_table));
1574
1575 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1576 AAC_HOST_NORM_CMD_ENTRIES;
1577 sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1578 AAC_HOST_NORM_CMD_ENTRIES;
1579 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1580 AAC_HOST_HIGH_CMD_ENTRIES;
1581 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1582 AAC_HOST_HIGH_CMD_ENTRIES;
1583 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1584 AAC_ADAP_NORM_CMD_ENTRIES;
1585 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1586 AAC_ADAP_NORM_CMD_ENTRIES;
1587 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1588 AAC_ADAP_HIGH_CMD_ENTRIES;
1589 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1590 AAC_ADAP_HIGH_CMD_ENTRIES;
1591 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1592 AAC_HOST_NORM_RESP_ENTRIES;
1593 sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1594 AAC_HOST_NORM_RESP_ENTRIES;
1595 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1596 AAC_HOST_HIGH_RESP_ENTRIES;
1597 sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1598 AAC_HOST_HIGH_RESP_ENTRIES;
1599 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1600 AAC_ADAP_NORM_RESP_ENTRIES;
1601 sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1602 AAC_ADAP_NORM_RESP_ENTRIES;
1603 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1604 AAC_ADAP_HIGH_RESP_ENTRIES;
1605 sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1606 AAC_ADAP_HIGH_RESP_ENTRIES;
1607 sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] =
1608 &sc->aac_queues->qt_HostNormCmdQueue[0];
1609 sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] =
1610 &sc->aac_queues->qt_HostHighCmdQueue[0];
1611 sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] =
1612 &sc->aac_queues->qt_AdapNormCmdQueue[0];
1613 sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] =
1614 &sc->aac_queues->qt_AdapHighCmdQueue[0];
1615 sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] =
1616 &sc->aac_queues->qt_HostNormRespQueue[0];
1617 sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] =
1618 &sc->aac_queues->qt_HostHighRespQueue[0];
1619 sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] =
1620 &sc->aac_queues->qt_AdapNormRespQueue[0];
1621 sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] =
1622 &sc->aac_queues->qt_AdapHighRespQueue[0];
1623
1624 /*
1625 * Do controller-type-specific initialisation
1626 */
1627 switch (sc->aac_hwif) {
1628 case AAC_HWIF_I960RX:
1629 AAC_SETREG4(sc, AAC_RX_ODBR, ~0);
1630 break;
1631 }
1632
1633 /*
1634 * Give the init structure to the controller.
1635 */
1636 if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT,
1637 sc->aac_common_busaddr +
1638 offsetof(struct aac_common, ac_init), 0, 0, 0,
1639 NULL)) {
1640 device_printf(sc->aac_dev,
1641 "error establishing init structure\n");
1642 error = EIO;
1643 goto out;
1644 }
1645
1646 error = 0;
1647out:
1648 return(error);
1649}
1650
1651/*
1652 * Send a synchronous command to the controller and wait for a result.
1653 */
1654static int
1655aac_sync_command(struct aac_softc *sc, u_int32_t command,
1656 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3,
1657 u_int32_t *sp)
1658{
1659 time_t then;
1660 u_int32_t status;
1661
1662 debug_called(3);
1663
1664 /* populate the mailbox */
1665 AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3);
1666
1667 /* ensure the sync command doorbell flag is cleared */
1668 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
1669
1670 /* then set it to signal the adapter */
1671 AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND);
1672
1673 /* spin waiting for the command to complete */
1674 then = time_second;
1675 do {
1676 if (time_second > (then + AAC_IMMEDIATE_TIMEOUT)) {
1677 debug(1, "timed out");
1678 return(EIO);
1679 }
1680 } while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND));
1681
1682 /* clear the completion flag */
1683 AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
1684
1685 /* get the command status */
1686 status = AAC_GET_MAILBOX(sc, 0);
1687 if (sp != NULL)
1688 *sp = status;
1689 return(0);
1690}
1691
1692/*
1693 * Grab the sync fib area.
1694 */
1695int
1696aac_alloc_sync_fib(struct aac_softc *sc, struct aac_fib **fib, int flags)
1697{
1698
1699 /*
1700 * If the force flag is set, the system is shutting down, or in
1701 * trouble. Ignore the mutex.
1702 */
1703 if (!(flags & AAC_SYNC_LOCK_FORCE))
1704 AAC_LOCK_ACQUIRE(&sc->aac_sync_lock);
1705
1706 *fib = &sc->aac_common->ac_sync_fib;
1707
1708 return (1);
1709}
1710
1711/*
1712 * Release the sync fib area.
1713 */
1714void
1715aac_release_sync_fib(struct aac_softc *sc)
1716{
1717
1718 AAC_LOCK_RELEASE(&sc->aac_sync_lock);
1719}
1720
1721/*
1722 * Send a synchronous FIB to the controller and wait for a result.
1723 */
1724int
1725aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate,
1726 struct aac_fib *fib, u_int16_t datasize)
1727{
1728 debug_called(3);
1729
1730 if (datasize > AAC_FIB_DATASIZE)
1731 return(EINVAL);
1732
1733 /*
1734 * Set up the sync FIB
1735 */
1736 fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED |
1737 AAC_FIBSTATE_INITIALISED |
1738 AAC_FIBSTATE_EMPTY;
1739 fib->Header.XferState |= xferstate;
1740 fib->Header.Command = command;
1741 fib->Header.StructType = AAC_FIBTYPE_TFIB;
1742 fib->Header.Size = sizeof(struct aac_fib) + datasize;
1743 fib->Header.SenderSize = sizeof(struct aac_fib);
1744 fib->Header.SenderFibAddress = (u_int32_t)fib;
1745 fib->Header.ReceiverFibAddress = sc->aac_common_busaddr +
1746 offsetof(struct aac_common,
1747 ac_sync_fib);
1748
1749 /*
1750 * Give the FIB to the controller, wait for a response.
1751 */
1752 if (aac_sync_command(sc, AAC_MONKER_SYNCFIB,
1753 fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) {
1754 debug(2, "IO error");
1755 return(EIO);
1756 }
1757
1758 return (0);
1759}
1760
1761/*
1762 * Adapter-space FIB queue manipulation
1763 *
1764 * Note that the queue implementation here is a little funky; neither the PI or
1765 * CI will ever be zero. This behaviour is a controller feature.
1766 */
1767static struct {
1768 int size;
1769 int notify;
1770} aac_qinfo[] = {
1771 {AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL},
1772 {AAC_HOST_HIGH_CMD_ENTRIES, 0},
1773 {AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY},
1774 {AAC_ADAP_HIGH_CMD_ENTRIES, 0},
1775 {AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL},
1776 {AAC_HOST_HIGH_RESP_ENTRIES, 0},
1777 {AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY},
1778 {AAC_ADAP_HIGH_RESP_ENTRIES, 0}
1779};
1780
1781/*
1782 * Atomically insert an entry into the nominated queue, returns 0 on success or
1783 * EBUSY if the queue is full.
1784 *
1785 * Note: it would be more efficient to defer notifying the controller in
1786 * the case where we may be inserting several entries in rapid succession,
1787 * but implementing this usefully may be difficult (it would involve a
1788 * separate queue/notify interface).
1789 */
1790static int
1791aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm)
1792{
1793 u_int32_t pi, ci;
7f2216bc 1794 int error;
984263bc
MD
1795 u_int32_t fib_size;
1796 u_int32_t fib_addr;
1797
1798 debug_called(3);
1799
1800 fib_size = cm->cm_fib->Header.Size;
1801 fib_addr = cm->cm_fib->Header.ReceiverFibAddress;
1802
7f2216bc 1803 crit_enter();
984263bc
MD
1804
1805 /* get the producer/consumer indices */
1806 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
1807 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
1808
1809 /* wrap the queue? */
1810 if (pi >= aac_qinfo[queue].size)
1811 pi = 0;
1812
1813 /* check for queue full */
1814 if ((pi + 1) == ci) {
1815 error = EBUSY;
1816 goto out;
1817 }
158dbeb8
MD
1818 /*
1819 * To avoid a race with its completion interrupt, place this command on
1820 * the busy queue prior to advertising it to the controller.
1821 */
1822 aac_enqueue_busy(cm);
1823
1824
984263bc
MD
1825
1826 /* populate queue entry */
1827 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
1828 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
1829
1830 /* update producer index */
1831 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
1832
984263bc
MD
1833 /* notify the adapter if we know how */
1834 if (aac_qinfo[queue].notify != 0)
1835 AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
1836
1837 error = 0;
1838
1839out:
7f2216bc 1840 crit_exit();
984263bc
MD
1841 return(error);
1842}
1843
1844/*
1845 * Atomically remove one entry from the nominated queue, returns 0 on
1846 * success or ENOENT if the queue is empty.
1847 */
1848static int
1849aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size,
1850 struct aac_fib **fib_addr)
1851{
1852 u_int32_t pi, ci;
7f2216bc 1853 int error;
984263bc
MD
1854 int notify;
1855
1856 debug_called(3);
1857
7f2216bc 1858 crit_enter();
984263bc
MD
1859
1860 /* get the producer/consumer indices */
1861 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
1862 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
1863
1864 /* check for queue empty */
1865 if (ci == pi) {
1866 error = ENOENT;
1867 goto out;
1868 }
158dbeb8
MD
1869
1870 /* wrap the pi so the following test works */
1871 if (pi >= aac_qinfo[queue].size)
1872 pi = 0;
1873
984263bc
MD
1874 notify = 0;
1875 if (ci == pi + 1)
1876 notify++;
1877
1878 /* wrap the queue? */
1879 if (ci >= aac_qinfo[queue].size)
1880 ci = 0;
1881
1882 /* fetch the entry */
1883 *fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size;
1884 *fib_addr = (struct aac_fib *)(sc->aac_qentries[queue] +
1885 ci)->aq_fib_addr;
1886
1887 /*
1888 * Is this a fast response? If it is, update the fib fields in
1889 * local memory so the whole fib doesn't have to be DMA'd back up.
1890 */
1891 if (*(uintptr_t *)fib_addr & 0x01) {
1892 *(uintptr_t *)fib_addr &= ~0x01;
1893 (*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP;
1894 *((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL;
1895 }
1896 /* update consumer index */
1897 sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1;
1898
1899 /* if we have made the queue un-full, notify the adapter */
1900 if (notify && (aac_qinfo[queue].notify != 0))
1901 AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
1902 error = 0;
1903
1904out:
7f2216bc 1905 crit_exit();
984263bc
MD
1906 return(error);
1907}
1908
1909/*
1910 * Put our response to an Adapter Initialed Fib on the response queue
1911 */
1912static int
1913aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib)
1914{
1915 u_int32_t pi, ci;
7f2216bc 1916 int error;
984263bc
MD
1917 u_int32_t fib_size;
1918 u_int32_t fib_addr;
1919
1920 debug_called(1);
1921
1922 /* Tell the adapter where the FIB is */
1923 fib_size = fib->Header.Size;
1924 fib_addr = fib->Header.SenderFibAddress;
1925 fib->Header.ReceiverFibAddress = fib_addr;
1926
7f2216bc 1927 crit_enter();
984263bc
MD
1928
1929 /* get the producer/consumer indices */
1930 pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
1931 ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
1932
1933 /* wrap the queue? */
1934 if (pi >= aac_qinfo[queue].size)
1935 pi = 0;
1936
1937 /* check for queue full */
1938 if ((pi + 1) == ci) {
1939 error = EBUSY;
1940 goto out;
1941 }
1942
1943 /* populate queue entry */
1944 (sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
1945 (sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
1946
1947 /* update producer index */
1948 sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
1949
1950 /* notify the adapter if we know how */
1951 if (aac_qinfo[queue].notify != 0)
1952 AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
1953
1954 error = 0;
1955
1956out:
7f2216bc 1957 crit_exit();
984263bc
MD
1958 return(error);
1959}
1960
1961/*
1962 * Check for commands that have been outstanding for a suspiciously long time,
1963 * and complain about them.
1964 */
1965static void
9087698d 1966aac_timeout(void *xsc)
984263bc 1967{
9087698d 1968 struct aac_softc *sc = xsc;
984263bc
MD
1969 struct aac_command *cm;
1970 time_t deadline;
158dbeb8 1971 int timedout, code;
984263bc
MD
1972#if 0
1973 /* simulate an interrupt to handle possibly-missed interrupts */
1974 /*
1975 * XXX This was done to work around another bug which has since been
1976 * fixed. It is dangerous anyways because you don't want multiple
1977 * threads in the interrupt handler at the same time! If calling
1978 * is deamed neccesary in the future, proper mutexes must be used.
1979 */
7f2216bc 1980 crit_enter();
984263bc 1981 aac_intr(sc);
7f2216bc 1982 crit_exit();
984263bc
MD
1983
1984 /* kick the I/O queue to restart it in the case of deadlock */
1985 aac_startio(sc);
1986#endif
1987
1988 /*
1989 * traverse the busy command list, bitch about late commands once
1990 * only.
1991 */
158dbeb8 1992 timedout = 0;
984263bc 1993 deadline = time_second - AAC_CMD_TIMEOUT;
7f2216bc 1994 crit_enter();
984263bc
MD
1995 TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) {
1996 if ((cm->cm_timestamp < deadline)
1997 /* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) {
1998 cm->cm_flags |= AAC_CMD_TIMEDOUT;
1999 device_printf(sc->aac_dev,
2000 "COMMAND %p TIMEOUT AFTER %d SECONDS\n",
2001 cm, (int)(time_second-cm->cm_timestamp));
2002 AAC_PRINT_FIB(sc, cm->cm_fib);
158dbeb8
MD
2003 timedout++;
2004 }
2005 }
2006 if (timedout) {
2007 code = AAC_GET_FWSTATUS(sc);
2008 if (code != AAC_UP_AND_RUNNING) {
2009 device_printf(sc->aac_dev, "WARNING! Controller is no "
2010 "longer running! code= 0x%x\n", code);
2011
984263bc
MD
2012 }
2013 }
7f2216bc 2014 crit_exit();
984263bc
MD
2015
2016 /* reset the timer for next time */
9087698d
JS
2017 callout_reset(&sc->aac_watchdog, AAC_PERIODIC_INTERVAL * hz,
2018 aac_timeout, sc);
984263bc
MD
2019}
2020
2021/*
2022 * Interface Function Vectors
2023 */
2024
2025/*
2026 * Read the current firmware status word.
2027 */
2028static int
2029aac_sa_get_fwstatus(struct aac_softc *sc)
2030{
2031 debug_called(3);
2032
2033 return(AAC_GETREG4(sc, AAC_SA_FWSTATUS));
2034}
2035
2036static int
2037aac_rx_get_fwstatus(struct aac_softc *sc)
2038{
2039 debug_called(3);
2040
2041 return(AAC_GETREG4(sc, AAC_RX_FWSTATUS));
2042}
2043
2044static int
2045aac_fa_get_fwstatus(struct aac_softc *sc)
2046{
2047 int val;
2048
2049 debug_called(3);
2050
2051 val = AAC_GETREG4(sc, AAC_FA_FWSTATUS);
2052 return (val);
2053}
2054
2055/*
2056 * Notify the controller of a change in a given queue
2057 */
2058
2059static void
2060aac_sa_qnotify(struct aac_softc *sc, int qbit)
2061{
2062 debug_called(3);
2063
2064 AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit);
2065}
2066
2067static void
2068aac_rx_qnotify(struct aac_softc *sc, int qbit)
2069{
2070 debug_called(3);
2071
2072 AAC_SETREG4(sc, AAC_RX_IDBR, qbit);
2073}
2074
2075static void
2076aac_fa_qnotify(struct aac_softc *sc, int qbit)
2077{
2078 debug_called(3);
2079
2080 AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit);
2081 AAC_FA_HACK(sc);
2082}
2083
2084/*
2085 * Get the interrupt reason bits
2086 */
2087static int
2088aac_sa_get_istatus(struct aac_softc *sc)
2089{
2090 debug_called(3);
2091
2092 return(AAC_GETREG2(sc, AAC_SA_DOORBELL0));
2093}
2094
2095static int
2096aac_rx_get_istatus(struct aac_softc *sc)
2097{
2098 debug_called(3);
2099
2100 return(AAC_GETREG4(sc, AAC_RX_ODBR));
2101}
2102
2103static int
2104aac_fa_get_istatus(struct aac_softc *sc)
2105{
2106 int val;
2107
2108 debug_called(3);
2109
2110 val = AAC_GETREG2(sc, AAC_FA_DOORBELL0);
2111 return (val);
2112}
2113
2114/*
2115 * Clear some interrupt reason bits
2116 */
2117static void
2118aac_sa_clear_istatus(struct aac_softc *sc, int mask)
2119{
2120 debug_called(3);
2121
2122 AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask);
2123}
2124
2125static void
2126aac_rx_clear_istatus(struct aac_softc *sc, int mask)
2127{
2128 debug_called(3);
2129
2130 AAC_SETREG4(sc, AAC_RX_ODBR, mask);
2131}
2132
2133static void
2134aac_fa_clear_istatus(struct aac_softc *sc, int mask)
2135{
2136 debug_called(3);
2137
2138 AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask);
2139 AAC_FA_HACK(sc);
2140}
2141
2142/*
2143 * Populate the mailbox and set the command word
2144 */
2145static void
2146aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command,
2147 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2148{
2149 debug_called(4);
2150
2151 AAC_SETREG4(sc, AAC_SA_MAILBOX, command);
2152 AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0);
2153 AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1);
2154 AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2);
2155 AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3);
2156}
2157
2158static void
2159aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
2160 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2161{
2162 debug_called(4);
2163
2164 AAC_SETREG4(sc, AAC_RX_MAILBOX, command);
2165 AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0);
2166 AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1);
2167 AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2);
2168 AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3);
2169}
2170
2171static void
2172aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
2173 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2174{
2175 debug_called(4);
2176
2177 AAC_SETREG4(sc, AAC_FA_MAILBOX, command);
2178 AAC_FA_HACK(sc);
2179 AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0);
2180 AAC_FA_HACK(sc);
2181 AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1);
2182 AAC_FA_HACK(sc);
2183 AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2);
2184 AAC_FA_HACK(sc);
2185 AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3);
2186 AAC_FA_HACK(sc);
2187}
2188
2189/*
2190 * Fetch the immediate command status word
2191 */
2192static int
2193aac_sa_get_mailbox(struct aac_softc *sc, int mb)
2194{
2195 debug_called(4);
2196
2197 return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4)));
2198}
2199
2200static int
2201aac_rx_get_mailbox(struct aac_softc *sc, int mb)
2202{
2203 debug_called(4);
2204
2205 return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4)));
2206}
2207
2208static int
2209aac_fa_get_mailbox(struct aac_softc *sc, int mb)
2210{
2211 int val;
2212
2213 debug_called(4);
2214
2215 val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4));
2216 return (val);
2217}
2218
2219/*
2220 * Set/clear interrupt masks
2221 */
2222static void
2223aac_sa_set_interrupts(struct aac_softc *sc, int enable)
2224{
2225 debug(2, "%sable interrupts", enable ? "en" : "dis");
2226
2227 if (enable) {
2228 AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
2229 } else {
2230 AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0);
2231 }
2232}
2233
2234static void
2235aac_rx_set_interrupts(struct aac_softc *sc, int enable)
2236{
2237 debug(2, "%sable interrupts", enable ? "en" : "dis");
2238
2239 if (enable) {
2240 AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS);
2241 } else {
2242 AAC_SETREG4(sc, AAC_RX_OIMR, ~0);
2243 }
2244}
2245
2246static void
2247aac_fa_set_interrupts(struct aac_softc *sc, int enable)
2248{
2249 debug(2, "%sable interrupts", enable ? "en" : "dis");
2250
2251 if (enable) {
2252 AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
2253 AAC_FA_HACK(sc);
2254 } else {
2255 AAC_SETREG2((sc), AAC_FA_MASK0, ~0);
2256 AAC_FA_HACK(sc);
2257 }
2258}
2259
2260/*
2261 * Debugging and Diagnostics
2262 */
2263
2264/*
2265 * Print some information about the controller.
2266 */
2267static void
2268aac_describe_controller(struct aac_softc *sc)
2269{
2270 struct aac_fib *fib;
2271 struct aac_adapter_info *info;
2272
2273 debug_called(2);
2274
2275 aac_alloc_sync_fib(sc, &fib, 0);
2276
2277 fib->data[0] = 0;
2278 if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) {
2279 device_printf(sc->aac_dev, "RequestAdapterInfo failed\n");
2280 aac_release_sync_fib(sc);
2281 return;
2282 }
2283 info = (struct aac_adapter_info *)&fib->data[0];
2284
2285 device_printf(sc->aac_dev, "%s %dMHz, %dMB cache memory, %s\n",
2286 aac_describe_code(aac_cpu_variant, info->CpuVariant),
2287 info->ClockSpeed, info->BufferMem / (1024 * 1024),
2288 aac_describe_code(aac_battery_platform,
2289 info->batteryPlatform));
2290
2291 /* save the kernel revision structure for later use */
2292 sc->aac_revision = info->KernelRevision;
2293 device_printf(sc->aac_dev, "Kernel %d.%d-%d, Build %d, S/N %6X\n",
2294 info->KernelRevision.external.comp.major,
2295 info->KernelRevision.external.comp.minor,
2296 info->KernelRevision.external.comp.dash,
2297 info->KernelRevision.buildNumber,
2298 (u_int32_t)(info->SerialNumber & 0xffffff));
2299
2300 aac_release_sync_fib(sc);
2301
2302 if (1 || bootverbose) {
2303 device_printf(sc->aac_dev, "Supported Options=%b\n",
2304 sc->supported_options,
2305 "\20"
2306 "\1SNAPSHOT"
2307 "\2CLUSTERS"
2308 "\3WCACHE"
2309 "\4DATA64"
2310 "\5HOSTTIME"
2311 "\6RAID50"
2312 "\7WINDOW4GB"
2313 "\10SCSIUPGD"
2314 "\11SOFTERR"
2315 "\12NORECOND"
2316 "\13SGMAP64"
2317 "\14ALARM"
2318 "\15NONDASD");
2319 }
2320}
2321
2322/*
2323 * Look up a text description of a numeric error code and return a pointer to
2324 * same.
2325 */
2326static char *
2327aac_describe_code(struct aac_code_lookup *table, u_int32_t code)
2328{
2329 int i;
2330
2331 for (i = 0; table[i].string != NULL; i++)
2332 if (table[i].code == code)
2333 return(table[i].string);
2334 return(table[i + 1].string);
2335}
2336
2337/*
2338 * Management Interface
2339 */
2340
2341static int
fef8985e 2342aac_open(struct dev_open_args *ap)
984263bc 2343{
b13267a5 2344 cdev_t dev = ap->a_head.a_dev;
984263bc
MD
2345 struct aac_softc *sc;
2346
2347 debug_called(2);
2348
2349 sc = dev->si_drv1;
2350
2351 /* Check to make sure the device isn't already open */
2352 if (sc->aac_state & AAC_STATE_OPEN) {
2353 return EBUSY;
2354 }
2355 sc->aac_state |= AAC_STATE_OPEN;
2356
2357 return 0;
2358}
2359
2360static int
fef8985e 2361aac_close(struct dev_close_args *ap)
984263bc 2362{
b13267a5 2363 cdev_t dev = ap->a_head.a_dev;
984263bc
MD
2364 struct aac_softc *sc;
2365
2366 debug_called(2);
2367
2368 sc = dev->si_drv1;
2369
2370 /* Mark this unit as no longer open */
2371 sc->aac_state &= ~AAC_STATE_OPEN;
2372
2373 return 0;
2374}
2375
2376static int
fef8985e 2377aac_ioctl(struct dev_ioctl_args *ap)
984263bc 2378{
b13267a5 2379 cdev_t dev = ap->a_head.a_dev;
fef8985e 2380 caddr_t arg = ap->a_data;
3930af25 2381 struct aac_softc *sc = dev->si_drv1;
984263bc
MD
2382 int error = 0;
2383 int i;
2384
2385 debug_called(2);
2386
fef8985e 2387 if (ap->a_cmd == AACIO_STATS) {
3930af25 2388 union aac_statrequest *as = (union aac_statrequest *)arg;
984263bc 2389
984263bc
MD
2390 switch (as->as_item) {
2391 case AACQ_FREE:
2392 case AACQ_BIO:
2393 case AACQ_READY:
2394 case AACQ_BUSY:
2395 case AACQ_COMPLETE:
2396 bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat,
2397 sizeof(struct aac_qstat));
2398 break;
2399 default:
2400 error = ENOENT;
2401 break;
2402 }
3930af25
JS
2403 return(error);
2404 }
2405
2406 arg = *(caddr_t *)arg;
2407
fef8985e 2408 switch (ap->a_cmd) {
3930af25 2409 /* AACIO_STATS already handled above */
984263bc 2410 case FSACTL_SENDFIB:
984263bc
MD
2411 debug(1, "FSACTL_SENDFIB");
2412 error = aac_ioctl_sendfib(sc, arg);
2413 break;
2414 case FSACTL_AIF_THREAD:
984263bc
MD
2415 debug(1, "FSACTL_AIF_THREAD");
2416 error = EINVAL;
2417 break;
2418 case FSACTL_OPEN_GET_ADAPTER_FIB:
984263bc
MD
2419 debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB");
2420 /*
2421 * Pass the caller out an AdapterFibContext.
2422 *
2423 * Note that because we only support one opener, we
2424 * basically ignore this. Set the caller's context to a magic
2425 * number just in case.
2426 *
2427 * The Linux code hands the driver a pointer into kernel space,
2428 * and then trusts it when the caller hands it back. Aiee!
2429 * Here, we give it the proc pointer of the per-adapter aif
2430 * thread. It's only used as a sanity check in other calls.
2431 */
2432 i = (int)sc->aifthread;
2433 error = copyout(&i, arg, sizeof(i));
2434 break;
2435 case FSACTL_GET_NEXT_ADAPTER_FIB:
984263bc
MD
2436 debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB");
2437 error = aac_getnext_aif(sc, arg);
2438 break;
2439 case FSACTL_CLOSE_GET_ADAPTER_FIB:
984263bc
MD
2440 debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB");
2441 /* don't do anything here */
2442 break;
2443 case FSACTL_MINIPORT_REV_CHECK:
984263bc
MD
2444 debug(1, "FSACTL_MINIPORT_REV_CHECK");
2445 error = aac_rev_check(sc, arg);
2446 break;
2447 case FSACTL_QUERY_DISK:
984263bc
MD
2448 debug(1, "FSACTL_QUERY_DISK");
2449 error = aac_query_disk(sc, arg);
2450 break;
2451 case FSACTL_DELETE_DISK:
984263bc
MD
2452 /*
2453 * We don't trust the underland to tell us when to delete a
2454 * container, rather we rely on an AIF coming from the
2455 * controller
2456 */
2457 error = 0;
2458 break;
2459 default:
fef8985e 2460 debug(1, "unsupported cmd 0x%lx\n", ap->a_cmd);
984263bc
MD
2461 error = EINVAL;
2462 break;
2463 }
2464 return(error);
2465}
2466
2467static int
fef8985e 2468aac_poll(struct dev_poll_args *ap)
984263bc 2469{
b13267a5 2470 cdev_t dev = ap->a_head.a_dev;
984263bc
MD
2471 struct aac_softc *sc;
2472 int revents;
2473
2474 sc = dev->si_drv1;
2475 revents = 0;
2476
2477 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
fef8985e 2478 if ((ap->a_events & (POLLRDNORM | POLLIN)) != 0) {
984263bc 2479 if (sc->aac_aifq_tail != sc->aac_aifq_head)
fef8985e 2480 revents |= ap->a_events & (POLLIN | POLLRDNORM);
984263bc
MD
2481 }
2482 AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
2483
2484 if (revents == 0) {
fef8985e
MD
2485 if (ap->a_events & (POLLIN | POLLRDNORM))
2486 selrecord(curthread, &sc->rcv_select);
984263bc 2487 }
fef8985e
MD
2488 ap->a_events = revents;
2489 return (0);
984263bc
MD
2490}
2491
2492/*
2493 * Send a FIB supplied from userspace
2494 */
2495static int
2496aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib)
2497{
2498 struct aac_command *cm;
2499 int size, error;
2500
2501 debug_called(2);
2502
2503 cm = NULL;
2504
2505 /*
2506 * Get a command
2507 */
2508 if (aac_alloc_command(sc, &cm)) {
2509 error = EBUSY;
2510 goto out;
2511 }
2512
2513 /*
2514 * Fetch the FIB header, then re-copy to get data as well.
2515 */
2516 if ((error = copyin(ufib, cm->cm_fib,
2517 sizeof(struct aac_fib_header))) != 0)
2518 goto out;
2519 size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header);
2520 if (size > sizeof(struct aac_fib)) {
2521 device_printf(sc->aac_dev, "incoming FIB oversized (%d > %d)\n",
2522 size, sizeof(struct aac_fib));
2523 size = sizeof(struct aac_fib);
2524 }
2525 if ((error = copyin(ufib, cm->cm_fib, size)) != 0)
2526 goto out;
2527 cm->cm_fib->Header.Size = size;
2528 cm->cm_timestamp = time_second;
2529
2530 /*
2531 * Pass the FIB to the controller, wait for it to complete.
2532 */
2533 if ((error = aac_wait_command(cm, 30)) != 0) { /* XXX user timeout? */
e3869ec7 2534 kprintf("aac_wait_command return %d\n", error);
984263bc
MD
2535 goto out;
2536 }
2537
2538 /*
2539 * Copy the FIB and data back out to the caller.
2540 */
2541 size = cm->cm_fib->Header.Size;
2542 if (size > sizeof(struct aac_fib)) {
2543 device_printf(sc->aac_dev, "outbound FIB oversized (%d > %d)\n",
2544 size, sizeof(struct aac_fib));
2545 size = sizeof(struct aac_fib);
2546 }
2547 error = copyout(cm->cm_fib, ufib, size);
2548
2549out:
2550 if (cm != NULL) {
2551 aac_release_command(cm);
2552 }
2553 return(error);
2554}
2555
2556/*
2557 * Handle an AIF sent to us by the controller; queue it for later reference.
2558 * If the queue fills up, then drop the older entries.
2559 */
2560static void
2561aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib)
2562{
2563 struct aac_aif_command *aif;
2564 struct aac_container *co, *co_next;
2565 struct aac_mntinfo *mi;
2566 struct aac_mntinforesp *mir = NULL;
2567 u_int16_t rsize;
2568 int next, found;
158dbeb8 2569 int count = 0, added = 0, i = 0;
984263bc
MD
2570
2571 debug_called(2);
2572
2573 aif = (struct aac_aif_command*)&fib->data[0];
2574 aac_print_aif(sc, aif);
2575
2576 /* Is it an event that we should care about? */
2577 switch (aif->command) {
2578 case AifCmdEventNotify:
2579 switch (aif->data.EN.type) {
2580 case AifEnAddContainer:
2581 case AifEnDeleteContainer:
2582 /*
2583 * A container was added or deleted, but the message
2584 * doesn't tell us anything else! Re-enumerate the
2585 * containers and sort things out.
2586 */
2587 aac_alloc_sync_fib(sc, &fib, 0);
2588 mi = (struct aac_mntinfo *)&fib->data[0];
2589 do {
2590 /*
2591 * Ask the controller for its containers one at
2592 * a time.
2593 * XXX What if the controller's list changes
2594 * midway through this enumaration?
2595 * XXX This should be done async.
2596 */
2597 bzero(mi, sizeof(struct aac_mntinfo));
2598 mi->Command = VM_NameServe;
2599 mi->MntType = FT_FILESYS;
2600 mi->MntCount = i;
2601 rsize = sizeof(mir);
2602 if (aac_sync_fib(sc, ContainerCommand, 0, fib,
2603 sizeof(struct aac_mntinfo))) {
158dbeb8
MD
2604 device_printf(sc->aac_dev,
2605 "Error probing container %d\n", i);
2606
984263bc
MD
2607 continue;
2608 }
2609 mir = (struct aac_mntinforesp *)&fib->data[0];
158dbeb8
MD
2610 /* XXX Need to check if count changed */
2611 count = mir->MntRespCount;
2612
984263bc
MD
2613 /*
2614 * Check the container against our list.
2615 * co->co_found was already set to 0 in a
2616 * previous run.
2617 */
2618 if ((mir->Status == ST_OK) &&
2619 (mir->MntTable[0].VolType != CT_NONE)) {
2620 found = 0;
2621 TAILQ_FOREACH(co,
2622 &sc->aac_container_tqh,
2623 co_link) {
2624 if (co->co_mntobj.ObjectId ==
2625 mir->MntTable[0].ObjectId) {
2626 co->co_found = 1;
2627 found = 1;
2628 break;
2629 }
2630 }
2631 /*
2632 * If the container matched, continue
2633 * in the list.
2634 */
2635 if (found) {
2636 i++;
2637 continue;
2638 }
2639
2640 /*
2641 * This is a new container. Do all the
2642 * appropriate things to set it up. */
2643 aac_add_container(sc, mir, 1);
2644 added = 1;
2645 }
2646 i++;
158dbeb8 2647 } while ((i < count) && (i < AAC_MAX_CONTAINERS));
984263bc
MD
2648 aac_release_sync_fib(sc);
2649
2650 /*
2651 * Go through our list of containers and see which ones
2652 * were not marked 'found'. Since the controller didn't
2653 * list them they must have been deleted. Do the
2654 * appropriate steps to destroy the device. Also reset
2655 * the co->co_found field.
2656 */
2657 co = TAILQ_FIRST(&sc->aac_container_tqh);
2658 while (co != NULL) {
2659 if (co->co_found == 0) {
2660 device_delete_child(sc->aac_dev,
2661 co->co_disk);
2662 co_next = TAILQ_NEXT(co, co_link);
2663 AAC_LOCK_ACQUIRE(&sc->
2664 aac_container_lock);
2665 TAILQ_REMOVE(&sc->aac_container_tqh, co,
2666 co_link);
2667 AAC_LOCK_RELEASE(&sc->
2668 aac_container_lock);
2669 FREE(co, M_AACBUF);
2670 co = co_next;
2671 } else {
2672 co->co_found = 0;
2673 co = TAILQ_NEXT(co, co_link);
2674 }
2675 }
2676
2677 /* Attach the newly created containers */
2678 if (added)
2679 bus_generic_attach(sc->aac_dev);
2680
2681 break;
2682
2683 default:
2684 break;
2685 }
2686
2687 default:
2688 break;
2689 }
2690
2691 /* Copy the AIF data to the AIF queue for ioctl retrieval */
2692 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
2693 next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH;
2694 if (next != sc->aac_aifq_tail) {
2695 bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command));
2696 sc->aac_aifq_head = next;
2697
2698 /* On the off chance that someone is sleeping for an aif... */
2699 if (sc->aac_state & AAC_STATE_AIF_SLEEPER)
2700 wakeup(sc->aac_aifq);
8a8d5d85 2701 /* token may have been lost */
984263bc
MD
2702 /* Wakeup any poll()ers */
2703 selwakeup(&sc->rcv_select);
8a8d5d85 2704 /* token may have been lost */
984263bc
MD
2705 }
2706 AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
2707
2708 return;
2709}
2710
2711/*
2712 * Return the Revision of the driver to userspace and check to see if the
2713 * userspace app is possibly compatible. This is extremely bogus since
2714 * our driver doesn't follow Adaptec's versioning system. Cheat by just
2715 * returning what the card reported.
2716 */
2717static int
2718aac_rev_check(struct aac_softc *sc, caddr_t udata)
2719{
2720 struct aac_rev_check rev_check;
2721 struct aac_rev_check_resp rev_check_resp;
2722 int error = 0;
2723
2724 debug_called(2);
2725
2726 /*
2727 * Copyin the revision struct from userspace
2728 */
2729 if ((error = copyin(udata, (caddr_t)&rev_check,
2730 sizeof(struct aac_rev_check))) != 0) {
2731 return error;
2732 }
2733
2734 debug(2, "Userland revision= %d\n",
2735 rev_check.callingRevision.buildNumber);
2736
2737 /*
2738 * Doctor up the response struct.
2739 */
2740 rev_check_resp.possiblyCompatible = 1;
2741 rev_check_resp.adapterSWRevision.external.ul =
2742 sc->aac_revision.external.ul;
2743 rev_check_resp.adapterSWRevision.buildNumber =
2744 sc->aac_revision.buildNumber;
2745
2746 return(copyout((caddr_t)&rev_check_resp, udata,
2747 sizeof(struct aac_rev_check_resp)));
2748}
2749
2750/*
2751 * Pass the caller the next AIF in their queue
2752 */
2753static int
2754aac_getnext_aif(struct aac_softc *sc, caddr_t arg)
2755{
2756 struct get_adapter_fib_ioctl agf;
7f2216bc 2757 int error;
984263bc
MD
2758
2759 debug_called(2);
2760
2761 if ((error = copyin(arg, &agf, sizeof(agf))) == 0) {
2762
2763 /*
2764 * Check the magic number that we gave the caller.
2765 */
2766 if (agf.AdapterFibContext != (int)sc->aifthread) {
2767 error = EFAULT;
2768 } else {
2769
7f2216bc 2770 crit_enter();
984263bc
MD
2771 error = aac_return_aif(sc, agf.AifFib);
2772
2773 if ((error == EAGAIN) && (agf.Wait)) {
2774 sc->aac_state |= AAC_STATE_AIF_SLEEPER;
2775 while (error == EAGAIN) {
377d4740 2776 error = tsleep(sc->aac_aifq,
984263bc
MD
2777 PCATCH, "aacaif", 0);
2778 if (error == 0)
2779 error = aac_return_aif(sc,
2780 agf.AifFib);
2781 }
2782 sc->aac_state &= ~AAC_STATE_AIF_SLEEPER;
2783 }
7f2216bc 2784 crit_exit();
984263bc
MD
2785 }
2786 }
2787 return(error);
2788}
2789
2790/*
2791 * Hand the next AIF off the top of the queue out to userspace.
8a8d5d85
MD
2792 *
2793 * YYY token could be lost during copyout
984263bc
MD
2794 */
2795static int
2796aac_return_aif(struct aac_softc *sc, caddr_t uptr)
2797{
2798 int error;
2799
2800 debug_called(2);
2801
2802 AAC_LOCK_ACQUIRE(&sc->aac_aifq_lock);
2803 if (sc->aac_aifq_tail == sc->aac_aifq_head) {
2804 error = EAGAIN;
2805 } else {
2806 error = copyout(&sc->aac_aifq[sc->aac_aifq_tail], uptr,
2807 sizeof(struct aac_aif_command));
2808 if (error)
e3869ec7 2809 kprintf("aac_return_aif: copyout returned %d\n", error);
984263bc
MD
2810 if (!error)
2811 sc->aac_aifq_tail = (sc->aac_aifq_tail + 1) %
2812 AAC_AIFQ_LENGTH;
2813 }
2814 AAC_LOCK_RELEASE(&sc->aac_aifq_lock);
2815 return(error);
2816}
2817
2818/*
2819 * Give the userland some information about the container. The AAC arch
2820 * expects the driver to be a SCSI passthrough type driver, so it expects
2821 * the containers to have b:t:l numbers. Fake it.
2822 */
2823static int
2824aac_query_disk(struct aac_softc *sc, caddr_t uptr)
2825{
2826 struct aac_query_disk query_disk;
2827 struct aac_container *co;
2828 struct aac_disk *disk;
2829 int error, id;
2830
2831 debug_called(2);
2832
2833 disk = NULL;
2834
2835 error = copyin(uptr, (caddr_t)&query_disk,
2836 sizeof(struct aac_query_disk));
2837 if (error)
2838 return (error);
2839
2840 id = query_disk.ContainerNumber;
2841 if (id == -1)
2842 return (EINVAL);
2843
2844 AAC_LOCK_ACQUIRE(&sc->aac_container_lock);
2845 TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) {
2846 if (co->co_mntobj.ObjectId == id)
2847 break;
2848 }
2849
2850 if (co == NULL) {
2851 query_disk.Valid = 0;
2852 query_disk.Locked = 0;
2853 query_disk.Deleted = 1; /* XXX is this right? */
2854 } else {
2855 disk = device_get_softc(co->co_disk);
2856 query_disk.Valid = 1;
2857 query_disk.Locked =
2858 (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0;
2859 query_disk.Deleted = 0;
2860 query_disk.Bus = device_get_unit(sc->aac_dev);
2861 query_disk.Target = disk->unit;
2862 query_disk.Lun = 0;
2863 query_disk.UnMapped = 0;
2864 bcopy(disk->ad_dev_t->si_name,
2865 &query_disk.diskDeviceName[0], 10);
2866 }
2867 AAC_LOCK_RELEASE(&sc->aac_container_lock);
2868
2869 error = copyout((caddr_t)&query_disk, uptr,
2870 sizeof(struct aac_query_disk));
2871
2872 return (error);
2873}
2874
2875static void
2876aac_get_bus_info(struct aac_softc *sc)
2877{
2878 struct aac_fib *fib;
2879 struct aac_ctcfg *c_cmd;
2880 struct aac_ctcfg_resp *c_resp;
2881 struct aac_vmioctl *vmi;
2882 struct aac_vmi_businf_resp *vmi_resp;
2883 struct aac_getbusinf businfo;
2884 struct aac_cam_inf *caminf;
2885 device_t child;
2886 int i, found, error;
2887
2888 aac_alloc_sync_fib(sc, &fib, 0);
2889 c_cmd = (struct aac_ctcfg *)&fib->data[0];
2890 bzero(c_cmd, sizeof(struct aac_ctcfg));
2891
2892 c_cmd->Command = VM_ContainerConfig;
2893 c_cmd->cmd = CT_GET_SCSI_METHOD;
2894 c_cmd->param = 0;
2895
2896 error = aac_sync_fib(sc, ContainerCommand, 0, fib,
2897 sizeof(struct aac_ctcfg));
2898 if (error) {
2899 device_printf(sc->aac_dev, "Error %d sending "
2900 "VM_ContainerConfig command\n", error);
2901 aac_release_sync_fib(sc);
2902 return;
2903 }
2904
2905 c_resp = (struct aac_ctcfg_resp *)&fib->data[0];
2906 if (c_resp->Status != ST_OK) {
2907 device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n",
2908 c_resp->Status);
2909 aac_release_sync_fib(sc);
2910 return;
2911 }
2912
2913 sc->scsi_method_id = c_resp->param;
2914
2915 vmi = (struct aac_vmioctl *)&fib->data[0];
2916 bzero(vmi, sizeof(struct aac_vmioctl));
2917
2918 vmi->Command = VM_Ioctl;
2919 vmi->ObjType = FT_DRIVE;
2920 vmi->MethId = sc->scsi_method_id;
2921 vmi->ObjId = 0;
2922 vmi->IoctlCmd = GetBusInfo;
2923
2924 error = aac_sync_fib(sc, ContainerCommand, 0, fib,
2925 sizeof(struct aac_vmioctl));
2926 if (error) {
2927 device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n",
2928 error);
2929 aac_release_sync_fib(sc);
2930 return;
2931 }
2932
2933 vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0];
2934 if (vmi_resp->Status != ST_OK) {
2935 debug(1, "VM_Ioctl returned %d\n", vmi_resp->Status);
2936 aac_release_sync_fib(sc);
2937 return;
2938 }
2939
2940 bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf));
2941 aac_release_sync_fib(sc);
2942
2943 found = 0;
2944 for (i = 0; i < businfo.BusCount; i++) {
2945 if (businfo.BusValid[i] != AAC_BUS_VALID)
2946 continue;
2947
2948 MALLOC(caminf, struct aac_cam_inf *,
076ae0ab 2949 sizeof(struct aac_cam_inf), M_AACBUF, M_INTWAIT | M_ZERO);
984263bc
MD
2950
2951 child = device_add_child(sc->aac_dev, "aacp", -1);
2952 if (child == NULL) {
2953 device_printf(sc->aac_dev, "device_add_child failed\n");
2954 continue;
2955 }
2956
2957 caminf->TargetsPerBus = businfo.TargetsPerBus;
2958 caminf->BusNumber = i;
2959 caminf->InitiatorBusId = businfo.InitiatorBusId[i];
2960 caminf->aac_sc = sc;
2961
2962 device_set_ivars(child, caminf);
2963 device_set_desc(child, "SCSI Passthrough Bus");
2964
2965 found = 1;
2966 }
2967
2968 if (found)
2969 bus_generic_attach(sc->aac_dev);
2970
2971 return;
2972}