aac.c revision 172836 
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
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/dev/aac/aac.c 172836 2007-10-20 23:23:23Z julian $");
32
33/*
34 * Driver for the Adaptec 'FSA' family of PCI/SCSI RAID adapters.
35 */
36#define AAC_DRIVER_VERSION		0x02000000
37#define AAC_DRIVERNAME			"aac"
38
39#include "opt_aac.h"
40
41/* #include <stddef.h> */
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/malloc.h>
45#include <sys/kernel.h>
46#include <sys/kthread.h>
47#include <sys/sysctl.h>
48#include <sys/poll.h>
49#include <sys/ioccom.h>
50
51#include <sys/bus.h>
52#include <sys/conf.h>
53#include <sys/signalvar.h>
54#include <sys/time.h>
55#include <sys/eventhandler.h>
56#include <sys/rman.h>
57
58#include <machine/bus.h>
59#include <sys/bus_dma.h>
60#include <machine/resource.h>
61
62#include <dev/pci/pcireg.h>
63#include <dev/pci/pcivar.h>
64
65#include <dev/aac/aacreg.h>
66#include <sys/aac_ioctl.h>
67#include <dev/aac/aacvar.h>
68#include <dev/aac/aac_tables.h>
69
70static void	aac_startup(void *arg);
71static void	aac_add_container(struct aac_softc *sc,
72				  struct aac_mntinforesp *mir, int f);
73static void	aac_get_bus_info(struct aac_softc *sc);
74
75/* Command Processing */
76static void	aac_timeout(struct aac_softc *sc);
77static void	aac_complete(void *context, int pending);
78static int	aac_bio_command(struct aac_softc *sc, struct aac_command **cmp);
79static void	aac_bio_complete(struct aac_command *cm);
80static int	aac_wait_command(struct aac_command *cm);
81static void	aac_command_thread(struct aac_softc *sc);
82
83/* Command Buffer Management */
84static void	aac_map_command_sg(void *arg, bus_dma_segment_t *segs,
85				   int nseg, int error);
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_unmap_command(struct aac_command *cm);
91
92/* Hardware Interface */
93static void	aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg,
94			       int error);
95static int	aac_check_firmware(struct aac_softc *sc);
96static int	aac_init(struct aac_softc *sc);
97static int	aac_sync_command(struct aac_softc *sc, u_int32_t command,
98				 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2,
99				 u_int32_t arg3, u_int32_t *sp);
100static int	aac_enqueue_fib(struct aac_softc *sc, int queue,
101				struct aac_command *cm);
102static int	aac_dequeue_fib(struct aac_softc *sc, int queue,
103				u_int32_t *fib_size, struct aac_fib **fib_addr);
104static int	aac_enqueue_response(struct aac_softc *sc, int queue,
105				     struct aac_fib *fib);
106
107/* Falcon/PPC interface */
108static int	aac_fa_get_fwstatus(struct aac_softc *sc);
109static void	aac_fa_qnotify(struct aac_softc *sc, int qbit);
110static int	aac_fa_get_istatus(struct aac_softc *sc);
111static void	aac_fa_clear_istatus(struct aac_softc *sc, int mask);
112static void	aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
113				   u_int32_t arg0, u_int32_t arg1,
114				   u_int32_t arg2, u_int32_t arg3);
115static int	aac_fa_get_mailbox(struct aac_softc *sc, int mb);
116static void	aac_fa_set_interrupts(struct aac_softc *sc, int enable);
117
118struct aac_interface aac_fa_interface = {
119	aac_fa_get_fwstatus,
120	aac_fa_qnotify,
121	aac_fa_get_istatus,
122	aac_fa_clear_istatus,
123	aac_fa_set_mailbox,
124	aac_fa_get_mailbox,
125	aac_fa_set_interrupts,
126	NULL, NULL, NULL
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	NULL, NULL, NULL
149};
150
151/* i960Rx interface */
152static int	aac_rx_get_fwstatus(struct aac_softc *sc);
153static void	aac_rx_qnotify(struct aac_softc *sc, int qbit);
154static int	aac_rx_get_istatus(struct aac_softc *sc);
155static void	aac_rx_clear_istatus(struct aac_softc *sc, int mask);
156static void	aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
157				   u_int32_t arg0, u_int32_t arg1,
158				   u_int32_t arg2, u_int32_t arg3);
159static int	aac_rx_get_mailbox(struct aac_softc *sc, int mb);
160static void	aac_rx_set_interrupts(struct aac_softc *sc, int enable);
161static int aac_rx_send_command(struct aac_softc *sc, struct aac_command *cm);
162static int aac_rx_get_outb_queue(struct aac_softc *sc);
163static void aac_rx_set_outb_queue(struct aac_softc *sc, int index);
164
165struct aac_interface aac_rx_interface = {
166	aac_rx_get_fwstatus,
167	aac_rx_qnotify,
168	aac_rx_get_istatus,
169	aac_rx_clear_istatus,
170	aac_rx_set_mailbox,
171	aac_rx_get_mailbox,
172	aac_rx_set_interrupts,
173	aac_rx_send_command,
174	aac_rx_get_outb_queue,
175	aac_rx_set_outb_queue
176};
177
178/* Rocket/MIPS interface */
179static int	aac_rkt_get_fwstatus(struct aac_softc *sc);
180static void	aac_rkt_qnotify(struct aac_softc *sc, int qbit);
181static int	aac_rkt_get_istatus(struct aac_softc *sc);
182static void	aac_rkt_clear_istatus(struct aac_softc *sc, int mask);
183static void	aac_rkt_set_mailbox(struct aac_softc *sc, u_int32_t command,
184				    u_int32_t arg0, u_int32_t arg1,
185				    u_int32_t arg2, u_int32_t arg3);
186static int	aac_rkt_get_mailbox(struct aac_softc *sc, int mb);
187static void	aac_rkt_set_interrupts(struct aac_softc *sc, int enable);
188static int aac_rkt_send_command(struct aac_softc *sc, struct aac_command *cm);
189static int aac_rkt_get_outb_queue(struct aac_softc *sc);
190static void aac_rkt_set_outb_queue(struct aac_softc *sc, int index);
191
192struct aac_interface aac_rkt_interface = {
193	aac_rkt_get_fwstatus,
194	aac_rkt_qnotify,
195	aac_rkt_get_istatus,
196	aac_rkt_clear_istatus,
197	aac_rkt_set_mailbox,
198	aac_rkt_get_mailbox,
199	aac_rkt_set_interrupts,
200	aac_rkt_send_command,
201	aac_rkt_get_outb_queue,
202	aac_rkt_set_outb_queue
203};
204
205/* Debugging and Diagnostics */
206static void	aac_describe_controller(struct aac_softc *sc);
207static char	*aac_describe_code(struct aac_code_lookup *table,
208				   u_int32_t code);
209
210/* Management Interface */
211static d_open_t		aac_open;
212static d_close_t	aac_close;
213static d_ioctl_t	aac_ioctl;
214static d_poll_t		aac_poll;
215static int		aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib);
216static void		aac_handle_aif(struct aac_softc *sc,
217					   struct aac_fib *fib);
218static int		aac_rev_check(struct aac_softc *sc, caddr_t udata);
219static int		aac_getnext_aif(struct aac_softc *sc, caddr_t arg);
220static int		aac_return_aif(struct aac_softc *sc, caddr_t uptr);
221static int		aac_query_disk(struct aac_softc *sc, caddr_t uptr);
222static int		aac_get_pci_info(struct aac_softc *sc, caddr_t uptr);
223static void		aac_ioctl_event(struct aac_softc *sc,
224				        struct aac_event *event, void *arg);
225
226static struct cdevsw aac_cdevsw = {
227	.d_version =	D_VERSION,
228	.d_flags =	D_NEEDGIANT,
229	.d_open =	aac_open,
230	.d_close =	aac_close,
231	.d_ioctl =	aac_ioctl,
232	.d_poll =	aac_poll,
233	.d_name =	"aac",
234};
235
236MALLOC_DEFINE(M_AACBUF, "aacbuf", "Buffers for the AAC driver");
237
238/* sysctl node */
239SYSCTL_NODE(_hw, OID_AUTO, aac, CTLFLAG_RD, 0, "AAC driver parameters");
240
241/*
242 * Device Interface
243 */
244
245/*
246 * Initialise the controller and softc
247 */
248int
249aac_attach(struct aac_softc *sc)
250{
251	int error, unit;
252
253	debug_called(1);
254
255	/*
256	 * Initialise per-controller queues.
257	 */
258	aac_initq_free(sc);
259	aac_initq_ready(sc);
260	aac_initq_busy(sc);
261	aac_initq_bio(sc);
262
263	/*
264	 * Initialise command-completion task.
265	 */
266	TASK_INIT(&sc->aac_task_complete, 0, aac_complete, sc);
267
268	/* mark controller as suspended until we get ourselves organised */
269	sc->aac_state |= AAC_STATE_SUSPEND;
270
271	/*
272	 * Check that the firmware on the card is supported.
273	 */
274	if ((error = aac_check_firmware(sc)) != 0)
275		return(error);
276
277	/*
278	 * Initialize locks
279	 */
280	mtx_init(&sc->aac_aifq_lock, "AAC AIF lock", NULL, MTX_DEF);
281	mtx_init(&sc->aac_io_lock, "AAC I/O lock", NULL, MTX_DEF);
282	mtx_init(&sc->aac_container_lock, "AAC container lock", NULL, MTX_DEF);
283	TAILQ_INIT(&sc->aac_container_tqh);
284	TAILQ_INIT(&sc->aac_ev_cmfree);
285
286	/* Initialize the local AIF queue pointers */
287	sc->aac_aifq_head = sc->aac_aifq_tail = AAC_AIFQ_LENGTH;
288
289	/*
290	 * Initialise the adapter.
291	 */
292	if ((error = aac_init(sc)) != 0)
293		return(error);
294
295	/*
296	 * Allocate and connect our interrupt.
297	 */
298	sc->aac_irq_rid = 0;
299	if ((sc->aac_irq = bus_alloc_resource_any(sc->aac_dev, SYS_RES_IRQ,
300			   			  &sc->aac_irq_rid,
301			   			  RF_SHAREABLE |
302						  RF_ACTIVE)) == NULL) {
303		device_printf(sc->aac_dev, "can't allocate interrupt\n");
304		return (EINVAL);
305	}
306	if (sc->flags & AAC_FLAGS_NEW_COMM) {
307		if (bus_setup_intr(sc->aac_dev, sc->aac_irq,
308				   INTR_MPSAFE|INTR_TYPE_BIO, NULL,
309				   aac_new_intr, sc, &sc->aac_intr)) {
310			device_printf(sc->aac_dev, "can't set up interrupt\n");
311			return (EINVAL);
312		}
313	} else {
314		if (bus_setup_intr(sc->aac_dev, sc->aac_irq,
315				   INTR_TYPE_BIO, aac_fast_intr, NULL,
316				   sc, &sc->aac_intr)) {
317			device_printf(sc->aac_dev,
318				      "can't set up FAST interrupt\n");
319			if (bus_setup_intr(sc->aac_dev, sc->aac_irq,
320					   INTR_MPSAFE|INTR_TYPE_BIO,
321					   NULL, (driver_intr_t *)aac_fast_intr,
322					   sc, &sc->aac_intr)) {
323				device_printf(sc->aac_dev,
324					     "can't set up MPSAFE interrupt\n");
325				return (EINVAL);
326			}
327		}
328	}
329
330	/*
331	 * Print a little information about the controller.
332	 */
333	aac_describe_controller(sc);
334
335	/*
336	 * Register to probe our containers later.
337	 */
338	sc->aac_ich.ich_func = aac_startup;
339	sc->aac_ich.ich_arg = sc;
340	if (config_intrhook_establish(&sc->aac_ich) != 0) {
341		device_printf(sc->aac_dev,
342			      "can't establish configuration hook\n");
343		return(ENXIO);
344	}
345
346	/*
347	 * Make the control device.
348	 */
349	unit = device_get_unit(sc->aac_dev);
350	sc->aac_dev_t = make_dev(&aac_cdevsw, unit, UID_ROOT, GID_OPERATOR,
351				 0640, "aac%d", unit);
352	(void)make_dev_alias(sc->aac_dev_t, "afa%d", unit);
353	(void)make_dev_alias(sc->aac_dev_t, "hpn%d", unit);
354	sc->aac_dev_t->si_drv1 = sc;
355
356	/* Create the AIF thread */
357	if (kproc_create((void(*)(void *))aac_command_thread, sc,
358		   &sc->aifthread, 0, 0, "aac%daif", unit))
359		panic("Could not create AIF thread\n");
360
361	/* Register the shutdown method to only be called post-dump */
362	if ((sc->eh = EVENTHANDLER_REGISTER(shutdown_final, aac_shutdown,
363	    sc->aac_dev, SHUTDOWN_PRI_DEFAULT)) == NULL)
364		device_printf(sc->aac_dev,
365			      "shutdown event registration failed\n");
366
367	/* Register with CAM for the non-DASD devices */
368	if ((sc->flags & AAC_FLAGS_ENABLE_CAM) != 0) {
369		TAILQ_INIT(&sc->aac_sim_tqh);
370		aac_get_bus_info(sc);
371	}
372
373	return(0);
374}
375
376void
377aac_add_event(struct aac_softc *sc, struct aac_event *event)
378{
379
380	switch (event->ev_type & AAC_EVENT_MASK) {
381	case AAC_EVENT_CMFREE:
382		TAILQ_INSERT_TAIL(&sc->aac_ev_cmfree, event, ev_links);
383		break;
384	default:
385		device_printf(sc->aac_dev, "aac_add event: unknown event %d\n",
386		    event->ev_type);
387		break;
388	}
389
390	return;
391}
392
393/*
394 * Probe for containers, create disks.
395 */
396static void
397aac_startup(void *arg)
398{
399	struct aac_softc *sc;
400	struct aac_fib *fib;
401	struct aac_mntinfo *mi;
402	struct aac_mntinforesp *mir = NULL;
403	int count = 0, i = 0;
404
405	debug_called(1);
406
407	sc = (struct aac_softc *)arg;
408
409	/* disconnect ourselves from the intrhook chain */
410	config_intrhook_disestablish(&sc->aac_ich);
411
412	mtx_lock(&sc->aac_io_lock);
413	aac_alloc_sync_fib(sc, &fib);
414	mi = (struct aac_mntinfo *)&fib->data[0];
415
416	/* loop over possible containers */
417	do {
418		/* request information on this container */
419		bzero(mi, sizeof(struct aac_mntinfo));
420		mi->Command = VM_NameServe;
421		mi->MntType = FT_FILESYS;
422		mi->MntCount = i;
423		if (aac_sync_fib(sc, ContainerCommand, 0, fib,
424				 sizeof(struct aac_mntinfo))) {
425			printf("error probing container %d", i);
426			continue;
427		}
428
429		mir = (struct aac_mntinforesp *)&fib->data[0];
430		/* XXX Need to check if count changed */
431		count = mir->MntRespCount;
432		aac_add_container(sc, mir, 0);
433		i++;
434	} while ((i < count) && (i < AAC_MAX_CONTAINERS));
435
436	aac_release_sync_fib(sc);
437	mtx_unlock(&sc->aac_io_lock);
438
439	/* poke the bus to actually attach the child devices */
440	if (bus_generic_attach(sc->aac_dev))
441		device_printf(sc->aac_dev, "bus_generic_attach failed\n");
442
443	/* mark the controller up */
444	sc->aac_state &= ~AAC_STATE_SUSPEND;
445
446	/* enable interrupts now */
447	AAC_UNMASK_INTERRUPTS(sc);
448}
449
450/*
451 * Create a device to respresent a new container
452 */
453static void
454aac_add_container(struct aac_softc *sc, struct aac_mntinforesp *mir, int f)
455{
456	struct aac_container *co;
457	device_t child;
458
459	/*
460	 * Check container volume type for validity.  Note that many of
461	 * the possible types may never show up.
462	 */
463	if ((mir->Status == ST_OK) && (mir->MntTable[0].VolType != CT_NONE)) {
464		co = (struct aac_container *)malloc(sizeof *co, M_AACBUF,
465		       M_NOWAIT | M_ZERO);
466		if (co == NULL)
467			panic("Out of memory?!\n");
468		debug(1, "id %x  name '%.16s'  size %u  type %d",
469		      mir->MntTable[0].ObjectId,
470		      mir->MntTable[0].FileSystemName,
471		      mir->MntTable[0].Capacity, mir->MntTable[0].VolType);
472
473		if ((child = device_add_child(sc->aac_dev, "aacd", -1)) == NULL)
474			device_printf(sc->aac_dev, "device_add_child failed\n");
475		else
476			device_set_ivars(child, co);
477		device_set_desc(child, aac_describe_code(aac_container_types,
478				mir->MntTable[0].VolType));
479		co->co_disk = child;
480		co->co_found = f;
481		bcopy(&mir->MntTable[0], &co->co_mntobj,
482		      sizeof(struct aac_mntobj));
483		mtx_lock(&sc->aac_container_lock);
484		TAILQ_INSERT_TAIL(&sc->aac_container_tqh, co, co_link);
485		mtx_unlock(&sc->aac_container_lock);
486	}
487}
488
489/*
490 * Free all of the resources associated with (sc)
491 *
492 * Should not be called if the controller is active.
493 */
494void
495aac_free(struct aac_softc *sc)
496{
497
498	debug_called(1);
499
500	/* remove the control device */
501	if (sc->aac_dev_t != NULL)
502		destroy_dev(sc->aac_dev_t);
503
504	/* throw away any FIB buffers, discard the FIB DMA tag */
505	aac_free_commands(sc);
506	if (sc->aac_fib_dmat)
507		bus_dma_tag_destroy(sc->aac_fib_dmat);
508
509	free(sc->aac_commands, M_AACBUF);
510
511	/* destroy the common area */
512	if (sc->aac_common) {
513		bus_dmamap_unload(sc->aac_common_dmat, sc->aac_common_dmamap);
514		bus_dmamem_free(sc->aac_common_dmat, sc->aac_common,
515				sc->aac_common_dmamap);
516	}
517	if (sc->aac_common_dmat)
518		bus_dma_tag_destroy(sc->aac_common_dmat);
519
520	/* disconnect the interrupt handler */
521	if (sc->aac_intr)
522		bus_teardown_intr(sc->aac_dev, sc->aac_irq, sc->aac_intr);
523	if (sc->aac_irq != NULL)
524		bus_release_resource(sc->aac_dev, SYS_RES_IRQ, sc->aac_irq_rid,
525				     sc->aac_irq);
526
527	/* destroy data-transfer DMA tag */
528	if (sc->aac_buffer_dmat)
529		bus_dma_tag_destroy(sc->aac_buffer_dmat);
530
531	/* destroy the parent DMA tag */
532	if (sc->aac_parent_dmat)
533		bus_dma_tag_destroy(sc->aac_parent_dmat);
534
535	/* release the register window mapping */
536	if (sc->aac_regs_resource != NULL)
537		bus_release_resource(sc->aac_dev, SYS_RES_MEMORY,
538				     sc->aac_regs_rid, sc->aac_regs_resource);
539}
540
541/*
542 * Disconnect from the controller completely, in preparation for unload.
543 */
544int
545aac_detach(device_t dev)
546{
547	struct aac_softc *sc;
548	struct aac_container *co;
549	struct aac_sim	*sim;
550	int error;
551
552	debug_called(1);
553
554	sc = device_get_softc(dev);
555
556	if (sc->aac_state & AAC_STATE_OPEN)
557		return(EBUSY);
558
559	/* Remove the child containers */
560	while ((co = TAILQ_FIRST(&sc->aac_container_tqh)) != NULL) {
561		error = device_delete_child(dev, co->co_disk);
562		if (error)
563			return (error);
564		TAILQ_REMOVE(&sc->aac_container_tqh, co, co_link);
565		free(co, M_AACBUF);
566	}
567
568	/* Remove the CAM SIMs */
569	while ((sim = TAILQ_FIRST(&sc->aac_sim_tqh)) != NULL) {
570		TAILQ_REMOVE(&sc->aac_sim_tqh, sim, sim_link);
571		error = device_delete_child(dev, sim->sim_dev);
572		if (error)
573			return (error);
574		free(sim, M_AACBUF);
575	}
576
577	if (sc->aifflags & AAC_AIFFLAGS_RUNNING) {
578		sc->aifflags |= AAC_AIFFLAGS_EXIT;
579		wakeup(sc->aifthread);
580		tsleep(sc->aac_dev, PUSER | PCATCH, "aacdch", 30 * hz);
581	}
582
583	if (sc->aifflags & AAC_AIFFLAGS_RUNNING)
584		panic("Cannot shutdown AIF thread\n");
585
586	if ((error = aac_shutdown(dev)))
587		return(error);
588
589	EVENTHANDLER_DEREGISTER(shutdown_final, sc->eh);
590
591	aac_free(sc);
592
593	mtx_destroy(&sc->aac_aifq_lock);
594	mtx_destroy(&sc->aac_io_lock);
595	mtx_destroy(&sc->aac_container_lock);
596
597	return(0);
598}
599
600/*
601 * Bring the controller down to a dormant state and detach all child devices.
602 *
603 * This function is called before detach or system shutdown.
604 *
605 * Note that we can assume that the bioq on the controller is empty, as we won't
606 * allow shutdown if any device is open.
607 */
608int
609aac_shutdown(device_t dev)
610{
611	struct aac_softc *sc;
612	struct aac_fib *fib;
613	struct aac_close_command *cc;
614
615	debug_called(1);
616
617	sc = device_get_softc(dev);
618
619	sc->aac_state |= AAC_STATE_SUSPEND;
620
621	/*
622	 * Send a Container shutdown followed by a HostShutdown FIB to the
623	 * controller to convince it that we don't want to talk to it anymore.
624	 * We've been closed and all I/O completed already
625	 */
626	device_printf(sc->aac_dev, "shutting down controller...");
627
628	mtx_lock(&sc->aac_io_lock);
629	aac_alloc_sync_fib(sc, &fib);
630	cc = (struct aac_close_command *)&fib->data[0];
631
632	bzero(cc, sizeof(struct aac_close_command));
633	cc->Command = VM_CloseAll;
634	cc->ContainerId = 0xffffffff;
635	if (aac_sync_fib(sc, ContainerCommand, 0, fib,
636	    sizeof(struct aac_close_command)))
637		printf("FAILED.\n");
638	else
639		printf("done\n");
640#if 0
641	else {
642		fib->data[0] = 0;
643		/*
644		 * XXX Issuing this command to the controller makes it shut down
645		 * but also keeps it from coming back up without a reset of the
646		 * PCI bus.  This is not desirable if you are just unloading the
647		 * driver module with the intent to reload it later.
648		 */
649		if (aac_sync_fib(sc, FsaHostShutdown, AAC_FIBSTATE_SHUTDOWN,
650		    fib, 1)) {
651			printf("FAILED.\n");
652		} else {
653			printf("done.\n");
654		}
655	}
656#endif
657
658	AAC_MASK_INTERRUPTS(sc);
659	aac_release_sync_fib(sc);
660	mtx_unlock(&sc->aac_io_lock);
661
662	return(0);
663}
664
665/*
666 * Bring the controller to a quiescent state, ready for system suspend.
667 */
668int
669aac_suspend(device_t dev)
670{
671	struct aac_softc *sc;
672
673	debug_called(1);
674
675	sc = device_get_softc(dev);
676
677	sc->aac_state |= AAC_STATE_SUSPEND;
678
679	AAC_MASK_INTERRUPTS(sc);
680	return(0);
681}
682
683/*
684 * Bring the controller back to a state ready for operation.
685 */
686int
687aac_resume(device_t dev)
688{
689	struct aac_softc *sc;
690
691	debug_called(1);
692
693	sc = device_get_softc(dev);
694
695	sc->aac_state &= ~AAC_STATE_SUSPEND;
696	AAC_UNMASK_INTERRUPTS(sc);
697	return(0);
698}
699
700/*
701 * Interrupt handler for NEW_COMM interface.
702 */
703void
704aac_new_intr(void *arg)
705{
706	struct aac_softc *sc;
707	u_int32_t index, fast;
708	struct aac_command *cm;
709	struct aac_fib *fib;
710	int i;
711
712	debug_called(2);
713
714	sc = (struct aac_softc *)arg;
715
716	mtx_lock(&sc->aac_io_lock);
717	while (1) {
718		index = AAC_GET_OUTB_QUEUE(sc);
719		if (index == 0xffffffff)
720			index = AAC_GET_OUTB_QUEUE(sc);
721		if (index == 0xffffffff)
722			break;
723		if (index & 2) {
724			if (index == 0xfffffffe) {
725				/* XXX This means that the controller wants
726				 * more work.  Ignore it for now.
727				 */
728				continue;
729			}
730			/* AIF */
731			fib = (struct aac_fib *)malloc(sizeof *fib, M_AACBUF,
732				   M_NOWAIT | M_ZERO);
733			if (fib == NULL) {
734				/* If we're really this short on memory,
735				 * hopefully breaking out of the handler will
736				 * allow something to get freed.  This
737				 * actually sucks a whole lot.
738				 */
739				break;
740			}
741			index &= ~2;
742			for (i = 0; i < sizeof(struct aac_fib)/4; ++i)
743				((u_int32_t *)fib)[i] = AAC_GETREG4(sc, index + i*4);
744			aac_handle_aif(sc, fib);
745			free(fib, M_AACBUF);
746
747			/*
748			 * AIF memory is owned by the adapter, so let it
749			 * know that we are done with it.
750			 */
751			AAC_SET_OUTB_QUEUE(sc, index);
752			AAC_CLEAR_ISTATUS(sc, AAC_DB_RESPONSE_READY);
753		} else {
754			fast = index & 1;
755			cm = sc->aac_commands + (index >> 2);
756			fib = cm->cm_fib;
757			if (fast) {
758				fib->Header.XferState |= AAC_FIBSTATE_DONEADAP;
759				*((u_int32_t *)(fib->data)) = AAC_ERROR_NORMAL;
760			}
761			aac_remove_busy(cm);
762 			aac_unmap_command(cm);
763			cm->cm_flags |= AAC_CMD_COMPLETED;
764
765			/* is there a completion handler? */
766			if (cm->cm_complete != NULL) {
767				cm->cm_complete(cm);
768			} else {
769				/* assume that someone is sleeping on this
770				 * command
771				 */
772				wakeup(cm);
773			}
774			sc->flags &= ~AAC_QUEUE_FRZN;
775		}
776	}
777	/* see if we can start some more I/O */
778	if ((sc->flags & AAC_QUEUE_FRZN) == 0)
779		aac_startio(sc);
780
781	mtx_unlock(&sc->aac_io_lock);
782}
783
784int
785aac_fast_intr(void *arg)
786{
787	struct aac_softc *sc;
788	u_int16_t reason;
789
790	debug_called(2);
791
792	sc = (struct aac_softc *)arg;
793
794	/*
795	 * Read the status register directly.  This is faster than taking the
796	 * driver lock and reading the queues directly.  It also saves having
797	 * to turn parts of the driver lock into a spin mutex, which would be
798	 * ugly.
799	 */
800	reason = AAC_GET_ISTATUS(sc);
801	AAC_CLEAR_ISTATUS(sc, reason);
802
803	/* handle completion processing */
804	if (reason & AAC_DB_RESPONSE_READY)
805		taskqueue_enqueue_fast(taskqueue_fast, &sc->aac_task_complete);
806
807	/* controller wants to talk to us */
808	if (reason & (AAC_DB_PRINTF | AAC_DB_COMMAND_READY)) {
809		/*
810		 * XXX Make sure that we don't get fooled by strange messages
811		 * that start with a NULL.
812		 */
813		if ((reason & AAC_DB_PRINTF) &&
814			(sc->aac_common->ac_printf[0] == 0))
815			sc->aac_common->ac_printf[0] = 32;
816
817		/*
818		 * This might miss doing the actual wakeup.  However, the
819		 * msleep that this is waking up has a timeout, so it will
820		 * wake up eventually.  AIFs and printfs are low enough
821		 * priority that they can handle hanging out for a few seconds
822		 * if needed.
823		 */
824		wakeup(sc->aifthread);
825	}
826	return (FILTER_HANDLED);
827}
828
829/*
830 * Command Processing
831 */
832
833/*
834 * Start as much queued I/O as possible on the controller
835 */
836void
837aac_startio(struct aac_softc *sc)
838{
839	struct aac_command *cm;
840	int error;
841
842	debug_called(2);
843
844	for (;;) {
845		/*
846		 * This flag might be set if the card is out of resources.
847		 * Checking it here prevents an infinite loop of deferrals.
848		 */
849		if (sc->flags & AAC_QUEUE_FRZN)
850			break;
851
852		/*
853		 * Try to get a command that's been put off for lack of
854		 * resources
855		 */
856		cm = aac_dequeue_ready(sc);
857
858		/*
859		 * Try to build a command off the bio queue (ignore error
860		 * return)
861		 */
862		if (cm == NULL)
863			aac_bio_command(sc, &cm);
864
865		/* nothing to do? */
866		if (cm == NULL)
867			break;
868
869		/* don't map more than once */
870		if (cm->cm_flags & AAC_CMD_MAPPED)
871			panic("aac: command %p already mapped", cm);
872
873		/*
874		 * Set up the command to go to the controller.  If there are no
875		 * data buffers associated with the command then it can bypass
876		 * busdma.
877		 */
878		if (cm->cm_datalen != 0) {
879			error = bus_dmamap_load(sc->aac_buffer_dmat,
880						cm->cm_datamap, cm->cm_data,
881						cm->cm_datalen,
882						aac_map_command_sg, cm, 0);
883			if (error == EINPROGRESS) {
884				debug(1, "freezing queue\n");
885				sc->flags |= AAC_QUEUE_FRZN;
886				error = 0;
887			} else if (error != 0)
888				panic("aac_startio: unexpected error %d from "
889				      "busdma\n", error);
890		} else
891			aac_map_command_sg(cm, NULL, 0, 0);
892	}
893}
894
895/*
896 * Handle notification of one or more FIBs coming from the controller.
897 */
898static void
899aac_command_thread(struct aac_softc *sc)
900{
901	struct aac_fib *fib;
902	u_int32_t fib_size;
903	int size, retval;
904
905	debug_called(2);
906
907	mtx_lock(&sc->aac_io_lock);
908	sc->aifflags = AAC_AIFFLAGS_RUNNING;
909
910	while ((sc->aifflags & AAC_AIFFLAGS_EXIT) == 0) {
911
912		retval = 0;
913		if ((sc->aifflags & AAC_AIFFLAGS_PENDING) == 0)
914			retval = msleep(sc->aifthread, &sc->aac_io_lock, PRIBIO,
915					"aifthd", AAC_PERIODIC_INTERVAL * hz);
916
917		/*
918		 * First see if any FIBs need to be allocated.  This needs
919		 * to be called without the driver lock because contigmalloc
920		 * will grab Giant, and would result in an LOR.
921		 */
922		if ((sc->aifflags & AAC_AIFFLAGS_ALLOCFIBS) != 0) {
923			mtx_unlock(&sc->aac_io_lock);
924			aac_alloc_commands(sc);
925			mtx_lock(&sc->aac_io_lock);
926			sc->aifflags &= ~AAC_AIFFLAGS_ALLOCFIBS;
927			aac_startio(sc);
928		}
929
930		/*
931		 * While we're here, check to see if any commands are stuck.
932		 * This is pretty low-priority, so it's ok if it doesn't
933		 * always fire.
934		 */
935		if (retval == EWOULDBLOCK)
936			aac_timeout(sc);
937
938		/* Check the hardware printf message buffer */
939		if (sc->aac_common->ac_printf[0] != 0)
940			aac_print_printf(sc);
941
942		/* Also check to see if the adapter has a command for us. */
943		if (sc->flags & AAC_FLAGS_NEW_COMM)
944			continue;
945		for (;;) {
946			if (aac_dequeue_fib(sc, AAC_HOST_NORM_CMD_QUEUE,
947					   &fib_size, &fib))
948				break;
949
950			AAC_PRINT_FIB(sc, fib);
951
952			switch (fib->Header.Command) {
953			case AifRequest:
954				aac_handle_aif(sc, fib);
955				break;
956			default:
957				device_printf(sc->aac_dev, "unknown command "
958					      "from controller\n");
959				break;
960			}
961
962			if ((fib->Header.XferState == 0) ||
963			    (fib->Header.StructType != AAC_FIBTYPE_TFIB)) {
964				break;
965			}
966
967			/* Return the AIF to the controller. */
968			if (fib->Header.XferState & AAC_FIBSTATE_FROMADAP) {
969				fib->Header.XferState |= AAC_FIBSTATE_DONEHOST;
970				*(AAC_FSAStatus*)fib->data = ST_OK;
971
972				/* XXX Compute the Size field? */
973				size = fib->Header.Size;
974				if (size > sizeof(struct aac_fib)) {
975					size = sizeof(struct aac_fib);
976					fib->Header.Size = size;
977				}
978				/*
979				 * Since we did not generate this command, it
980				 * cannot go through the normal
981				 * enqueue->startio chain.
982				 */
983				aac_enqueue_response(sc,
984						 AAC_ADAP_NORM_RESP_QUEUE,
985						 fib);
986			}
987		}
988	}
989	sc->aifflags &= ~AAC_AIFFLAGS_RUNNING;
990	mtx_unlock(&sc->aac_io_lock);
991	wakeup(sc->aac_dev);
992
993	kproc_exit(0);
994}
995
996/*
997 * Process completed commands.
998 */
999static void
1000aac_complete(void *context, int pending)
1001{
1002	struct aac_softc *sc;
1003	struct aac_command *cm;
1004	struct aac_fib *fib;
1005	u_int32_t fib_size;
1006
1007	debug_called(2);
1008
1009	sc = (struct aac_softc *)context;
1010
1011	mtx_lock(&sc->aac_io_lock);
1012
1013	/* pull completed commands off the queue */
1014	for (;;) {
1015		/* look for completed FIBs on our queue */
1016		if (aac_dequeue_fib(sc, AAC_HOST_NORM_RESP_QUEUE, &fib_size,
1017							&fib))
1018			break;	/* nothing to do */
1019
1020		/* get the command, unmap and hand off for processing */
1021		cm = sc->aac_commands + fib->Header.SenderData;
1022		if (cm == NULL) {
1023			AAC_PRINT_FIB(sc, fib);
1024			break;
1025		}
1026		aac_remove_busy(cm);
1027
1028 		aac_unmap_command(cm);
1029		cm->cm_flags |= AAC_CMD_COMPLETED;
1030
1031		/* is there a completion handler? */
1032		if (cm->cm_complete != NULL) {
1033			cm->cm_complete(cm);
1034		} else {
1035			/* assume that someone is sleeping on this command */
1036			wakeup(cm);
1037		}
1038	}
1039
1040	/* see if we can start some more I/O */
1041	sc->flags &= ~AAC_QUEUE_FRZN;
1042	aac_startio(sc);
1043
1044	mtx_unlock(&sc->aac_io_lock);
1045}
1046
1047/*
1048 * Handle a bio submitted from a disk device.
1049 */
1050void
1051aac_submit_bio(struct bio *bp)
1052{
1053	struct aac_disk *ad;
1054	struct aac_softc *sc;
1055
1056	debug_called(2);
1057
1058	ad = (struct aac_disk *)bp->bio_disk->d_drv1;
1059	sc = ad->ad_controller;
1060
1061	/* queue the BIO and try to get some work done */
1062	aac_enqueue_bio(sc, bp);
1063	aac_startio(sc);
1064}
1065
1066/*
1067 * Get a bio and build a command to go with it.
1068 */
1069static int
1070aac_bio_command(struct aac_softc *sc, struct aac_command **cmp)
1071{
1072	struct aac_command *cm;
1073	struct aac_fib *fib;
1074	struct aac_disk *ad;
1075	struct bio *bp;
1076
1077	debug_called(2);
1078
1079	/* get the resources we will need */
1080	cm = NULL;
1081	bp = NULL;
1082	if (aac_alloc_command(sc, &cm))	/* get a command */
1083		goto fail;
1084	if ((bp = aac_dequeue_bio(sc)) == NULL)
1085		goto fail;
1086
1087	/* fill out the command */
1088	cm->cm_data = (void *)bp->bio_data;
1089	cm->cm_datalen = bp->bio_bcount;
1090	cm->cm_complete = aac_bio_complete;
1091	cm->cm_private = bp;
1092	cm->cm_timestamp = time_uptime;
1093	cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
1094
1095	/* build the FIB */
1096	fib = cm->cm_fib;
1097	fib->Header.Size = sizeof(struct aac_fib_header);
1098	fib->Header.XferState =
1099		AAC_FIBSTATE_HOSTOWNED   |
1100		AAC_FIBSTATE_INITIALISED |
1101		AAC_FIBSTATE_EMPTY	 |
1102		AAC_FIBSTATE_FROMHOST	 |
1103		AAC_FIBSTATE_REXPECTED   |
1104		AAC_FIBSTATE_NORM	 |
1105		AAC_FIBSTATE_ASYNC	 |
1106		AAC_FIBSTATE_FAST_RESPONSE;
1107
1108	/* build the read/write request */
1109	ad = (struct aac_disk *)bp->bio_disk->d_drv1;
1110
1111	if (sc->flags & AAC_FLAGS_RAW_IO) {
1112		struct aac_raw_io *raw;
1113		raw = (struct aac_raw_io *)&fib->data[0];
1114		fib->Header.Command = RawIo;
1115		raw->BlockNumber = (u_int64_t)bp->bio_pblkno;
1116		raw->ByteCount = bp->bio_bcount;
1117		raw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1118		raw->BpTotal = 0;
1119		raw->BpComplete = 0;
1120		fib->Header.Size += sizeof(struct aac_raw_io);
1121		cm->cm_sgtable = (struct aac_sg_table *)&raw->SgMapRaw;
1122		if (bp->bio_cmd == BIO_READ) {
1123			raw->Flags = 1;
1124			cm->cm_flags |= AAC_CMD_DATAIN;
1125		} else {
1126			raw->Flags = 0;
1127			cm->cm_flags |= AAC_CMD_DATAOUT;
1128		}
1129	} else if ((sc->flags & AAC_FLAGS_SG_64BIT) == 0) {
1130		fib->Header.Command = ContainerCommand;
1131		if (bp->bio_cmd == BIO_READ) {
1132			struct aac_blockread *br;
1133			br = (struct aac_blockread *)&fib->data[0];
1134			br->Command = VM_CtBlockRead;
1135			br->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1136			br->BlockNumber = bp->bio_pblkno;
1137			br->ByteCount = bp->bio_bcount;
1138			fib->Header.Size += sizeof(struct aac_blockread);
1139			cm->cm_sgtable = &br->SgMap;
1140			cm->cm_flags |= AAC_CMD_DATAIN;
1141		} else {
1142			struct aac_blockwrite *bw;
1143			bw = (struct aac_blockwrite *)&fib->data[0];
1144			bw->Command = VM_CtBlockWrite;
1145			bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1146			bw->BlockNumber = bp->bio_pblkno;
1147			bw->ByteCount = bp->bio_bcount;
1148			bw->Stable = CUNSTABLE;
1149			fib->Header.Size += sizeof(struct aac_blockwrite);
1150			cm->cm_flags |= AAC_CMD_DATAOUT;
1151			cm->cm_sgtable = &bw->SgMap;
1152		}
1153	} else {
1154		fib->Header.Command = ContainerCommand64;
1155		if (bp->bio_cmd == BIO_READ) {
1156			struct aac_blockread64 *br;
1157			br = (struct aac_blockread64 *)&fib->data[0];
1158			br->Command = VM_CtHostRead64;
1159			br->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1160			br->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE;
1161			br->BlockNumber = bp->bio_pblkno;
1162			br->Pad = 0;
1163			br->Flags = 0;
1164			fib->Header.Size += sizeof(struct aac_blockread64);
1165			cm->cm_flags |= AAC_CMD_DATAOUT;
1166			cm->cm_sgtable = (struct aac_sg_table *)&br->SgMap64;
1167		} else {
1168			struct aac_blockwrite64 *bw;
1169			bw = (struct aac_blockwrite64 *)&fib->data[0];
1170			bw->Command = VM_CtHostWrite64;
1171			bw->ContainerId = ad->ad_container->co_mntobj.ObjectId;
1172			bw->SectorCount = bp->bio_bcount / AAC_BLOCK_SIZE;
1173			bw->BlockNumber = bp->bio_pblkno;
1174			bw->Pad = 0;
1175			bw->Flags = 0;
1176			fib->Header.Size += sizeof(struct aac_blockwrite64);
1177			cm->cm_flags |= AAC_CMD_DATAIN;
1178			cm->cm_sgtable = (struct aac_sg_table *)&bw->SgMap64;
1179		}
1180	}
1181
1182	*cmp = cm;
1183	return(0);
1184
1185fail:
1186	if (bp != NULL)
1187		aac_enqueue_bio(sc, bp);
1188	if (cm != NULL)
1189		aac_release_command(cm);
1190	return(ENOMEM);
1191}
1192
1193/*
1194 * Handle a bio-instigated command that has been completed.
1195 */
1196static void
1197aac_bio_complete(struct aac_command *cm)
1198{
1199	struct aac_blockread_response *brr;
1200	struct aac_blockwrite_response *bwr;
1201	struct bio *bp;
1202	AAC_FSAStatus status;
1203
1204	/* fetch relevant status and then release the command */
1205	bp = (struct bio *)cm->cm_private;
1206	if (bp->bio_cmd == BIO_READ) {
1207		brr = (struct aac_blockread_response *)&cm->cm_fib->data[0];
1208		status = brr->Status;
1209	} else {
1210		bwr = (struct aac_blockwrite_response *)&cm->cm_fib->data[0];
1211		status = bwr->Status;
1212	}
1213	aac_release_command(cm);
1214
1215	/* fix up the bio based on status */
1216	if (status == ST_OK) {
1217		bp->bio_resid = 0;
1218	} else {
1219		bp->bio_error = EIO;
1220		bp->bio_flags |= BIO_ERROR;
1221		/* pass an error string out to the disk layer */
1222		bp->bio_driver1 = aac_describe_code(aac_command_status_table,
1223						    status);
1224	}
1225	aac_biodone(bp);
1226}
1227
1228/*
1229 * Submit a command to the controller, return when it completes.
1230 * XXX This is very dangerous!  If the card has gone out to lunch, we could
1231 *     be stuck here forever.  At the same time, signals are not caught
1232 *     because there is a risk that a signal could wakeup the sleep before
1233 *     the card has a chance to complete the command.  Since there is no way
1234 *     to cancel a command that is in progress, we can't protect against the
1235 *     card completing a command late and spamming the command and data
1236 *     memory.  So, we are held hostage until the command completes.
1237 */
1238static int
1239aac_wait_command(struct aac_command *cm)
1240{
1241	struct aac_softc *sc;
1242	int error;
1243
1244	debug_called(2);
1245
1246	sc = cm->cm_sc;
1247
1248	/* Put the command on the ready queue and get things going */
1249	cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
1250	aac_enqueue_ready(cm);
1251	aac_startio(sc);
1252	error = msleep(cm, &sc->aac_io_lock, PRIBIO, "aacwait", 0);
1253	return(error);
1254}
1255
1256/*
1257 *Command Buffer Management
1258 */
1259
1260/*
1261 * Allocate a command.
1262 */
1263int
1264aac_alloc_command(struct aac_softc *sc, struct aac_command **cmp)
1265{
1266	struct aac_command *cm;
1267
1268	debug_called(3);
1269
1270	if ((cm = aac_dequeue_free(sc)) == NULL) {
1271		if (sc->total_fibs < sc->aac_max_fibs) {
1272			sc->aifflags |= AAC_AIFFLAGS_ALLOCFIBS;
1273			wakeup(sc->aifthread);
1274		}
1275		return (EBUSY);
1276	}
1277
1278	*cmp = cm;
1279	return(0);
1280}
1281
1282/*
1283 * Release a command back to the freelist.
1284 */
1285void
1286aac_release_command(struct aac_command *cm)
1287{
1288	struct aac_event *event;
1289	struct aac_softc *sc;
1290
1291	debug_called(3);
1292
1293	/* (re)initialise the command/FIB */
1294	cm->cm_sgtable = NULL;
1295	cm->cm_flags = 0;
1296	cm->cm_complete = NULL;
1297	cm->cm_private = NULL;
1298	cm->cm_fib->Header.XferState = AAC_FIBSTATE_EMPTY;
1299	cm->cm_fib->Header.StructType = AAC_FIBTYPE_TFIB;
1300	cm->cm_fib->Header.Flags = 0;
1301	cm->cm_fib->Header.SenderSize = cm->cm_sc->aac_max_fib_size;
1302
1303	/*
1304	 * These are duplicated in aac_start to cover the case where an
1305	 * intermediate stage may have destroyed them.  They're left
1306	 * initialised here for debugging purposes only.
1307	 */
1308	cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys;
1309	cm->cm_fib->Header.SenderData = 0;
1310
1311	aac_enqueue_free(cm);
1312
1313	sc = cm->cm_sc;
1314	event = TAILQ_FIRST(&sc->aac_ev_cmfree);
1315	if (event != NULL) {
1316		TAILQ_REMOVE(&sc->aac_ev_cmfree, event, ev_links);
1317		event->ev_callback(sc, event, event->ev_arg);
1318	}
1319}
1320
1321/*
1322 * Map helper for command/FIB allocation.
1323 */
1324static void
1325aac_map_command_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1326{
1327	uint64_t	*fibphys;
1328
1329	fibphys = (uint64_t *)arg;
1330
1331	debug_called(3);
1332
1333	*fibphys = segs[0].ds_addr;
1334}
1335
1336/*
1337 * Allocate and initialise commands/FIBs for this adapter.
1338 */
1339static int
1340aac_alloc_commands(struct aac_softc *sc)
1341{
1342	struct aac_command *cm;
1343	struct aac_fibmap *fm;
1344	uint64_t fibphys;
1345	int i, error;
1346
1347	debug_called(2);
1348
1349	if (sc->total_fibs + sc->aac_max_fibs_alloc > sc->aac_max_fibs)
1350		return (ENOMEM);
1351
1352	fm = malloc(sizeof(struct aac_fibmap), M_AACBUF, M_NOWAIT|M_ZERO);
1353	if (fm == NULL)
1354		return (ENOMEM);
1355
1356	/* allocate the FIBs in DMAable memory and load them */
1357	if (bus_dmamem_alloc(sc->aac_fib_dmat, (void **)&fm->aac_fibs,
1358			     BUS_DMA_NOWAIT, &fm->aac_fibmap)) {
1359		device_printf(sc->aac_dev,
1360			      "Not enough contiguous memory available.\n");
1361		free(fm, M_AACBUF);
1362		return (ENOMEM);
1363	}
1364
1365	/* Ignore errors since this doesn't bounce */
1366	(void)bus_dmamap_load(sc->aac_fib_dmat, fm->aac_fibmap, fm->aac_fibs,
1367			      sc->aac_max_fibs_alloc * sc->aac_max_fib_size,
1368			      aac_map_command_helper, &fibphys, 0);
1369
1370	/* initialise constant fields in the command structure */
1371	bzero(fm->aac_fibs, sc->aac_max_fibs_alloc * sc->aac_max_fib_size);
1372	for (i = 0; i < sc->aac_max_fibs_alloc; i++) {
1373		cm = sc->aac_commands + sc->total_fibs;
1374		fm->aac_commands = cm;
1375		cm->cm_sc = sc;
1376		cm->cm_fib = (struct aac_fib *)
1377			((u_int8_t *)fm->aac_fibs + i*sc->aac_max_fib_size);
1378		cm->cm_fibphys = fibphys + i*sc->aac_max_fib_size;
1379		cm->cm_index = sc->total_fibs;
1380
1381		if ((error = bus_dmamap_create(sc->aac_buffer_dmat, 0,
1382					       &cm->cm_datamap)) != 0)
1383			break;
1384		mtx_lock(&sc->aac_io_lock);
1385		aac_release_command(cm);
1386		sc->total_fibs++;
1387		mtx_unlock(&sc->aac_io_lock);
1388	}
1389
1390	if (i > 0) {
1391		mtx_lock(&sc->aac_io_lock);
1392		TAILQ_INSERT_TAIL(&sc->aac_fibmap_tqh, fm, fm_link);
1393		debug(1, "total_fibs= %d\n", sc->total_fibs);
1394		mtx_unlock(&sc->aac_io_lock);
1395		return (0);
1396	}
1397
1398	bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap);
1399	bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap);
1400	free(fm, M_AACBUF);
1401	return (ENOMEM);
1402}
1403
1404/*
1405 * Free FIBs owned by this adapter.
1406 */
1407static void
1408aac_free_commands(struct aac_softc *sc)
1409{
1410	struct aac_fibmap *fm;
1411	struct aac_command *cm;
1412	int i;
1413
1414	debug_called(1);
1415
1416	while ((fm = TAILQ_FIRST(&sc->aac_fibmap_tqh)) != NULL) {
1417
1418		TAILQ_REMOVE(&sc->aac_fibmap_tqh, fm, fm_link);
1419		/*
1420		 * We check against total_fibs to handle partially
1421		 * allocated blocks.
1422		 */
1423		for (i = 0; i < sc->aac_max_fibs_alloc && sc->total_fibs--; i++) {
1424			cm = fm->aac_commands + i;
1425			bus_dmamap_destroy(sc->aac_buffer_dmat, cm->cm_datamap);
1426		}
1427		bus_dmamap_unload(sc->aac_fib_dmat, fm->aac_fibmap);
1428		bus_dmamem_free(sc->aac_fib_dmat, fm->aac_fibs, fm->aac_fibmap);
1429		free(fm, M_AACBUF);
1430	}
1431}
1432
1433/*
1434 * Command-mapping helper function - populate this command's s/g table.
1435 */
1436static void
1437aac_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1438{
1439	struct aac_softc *sc;
1440	struct aac_command *cm;
1441	struct aac_fib *fib;
1442	int i;
1443
1444	debug_called(3);
1445
1446	cm = (struct aac_command *)arg;
1447	sc = cm->cm_sc;
1448	fib = cm->cm_fib;
1449
1450	/* copy into the FIB */
1451	if (cm->cm_sgtable != NULL) {
1452		if (fib->Header.Command == RawIo) {
1453			struct aac_sg_tableraw *sg;
1454			sg = (struct aac_sg_tableraw *)cm->cm_sgtable;
1455			sg->SgCount = nseg;
1456			for (i = 0; i < nseg; i++) {
1457				sg->SgEntryRaw[i].SgAddress = segs[i].ds_addr;
1458				sg->SgEntryRaw[i].SgByteCount = segs[i].ds_len;
1459				sg->SgEntryRaw[i].Next = 0;
1460				sg->SgEntryRaw[i].Prev = 0;
1461				sg->SgEntryRaw[i].Flags = 0;
1462			}
1463			/* update the FIB size for the s/g count */
1464			fib->Header.Size += nseg*sizeof(struct aac_sg_entryraw);
1465		} else if ((cm->cm_sc->flags & AAC_FLAGS_SG_64BIT) == 0) {
1466			struct aac_sg_table *sg;
1467			sg = cm->cm_sgtable;
1468			sg->SgCount = nseg;
1469			for (i = 0; i < nseg; i++) {
1470				sg->SgEntry[i].SgAddress = segs[i].ds_addr;
1471				sg->SgEntry[i].SgByteCount = segs[i].ds_len;
1472			}
1473			/* update the FIB size for the s/g count */
1474			fib->Header.Size += nseg*sizeof(struct aac_sg_entry);
1475		} else {
1476			struct aac_sg_table64 *sg;
1477			sg = (struct aac_sg_table64 *)cm->cm_sgtable;
1478			sg->SgCount = nseg;
1479			for (i = 0; i < nseg; i++) {
1480				sg->SgEntry64[i].SgAddress = segs[i].ds_addr;
1481				sg->SgEntry64[i].SgByteCount = segs[i].ds_len;
1482			}
1483			/* update the FIB size for the s/g count */
1484			fib->Header.Size += nseg*sizeof(struct aac_sg_entry64);
1485		}
1486	}
1487
1488	/* Fix up the address values in the FIB.  Use the command array index
1489	 * instead of a pointer since these fields are only 32 bits.  Shift
1490	 * the SenderFibAddress over to make room for the fast response bit
1491	 * and for the AIF bit
1492	 */
1493	cm->cm_fib->Header.SenderFibAddress = (cm->cm_index << 2);
1494	cm->cm_fib->Header.ReceiverFibAddress = (u_int32_t)cm->cm_fibphys;
1495
1496	/* save a pointer to the command for speedy reverse-lookup */
1497	cm->cm_fib->Header.SenderData = cm->cm_index;
1498
1499	if (cm->cm_flags & AAC_CMD_DATAIN)
1500		bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1501				BUS_DMASYNC_PREREAD);
1502	if (cm->cm_flags & AAC_CMD_DATAOUT)
1503		bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1504				BUS_DMASYNC_PREWRITE);
1505	cm->cm_flags |= AAC_CMD_MAPPED;
1506
1507	if (sc->flags & AAC_FLAGS_NEW_COMM) {
1508		int count = 10000000L;
1509		while (AAC_SEND_COMMAND(sc, cm) != 0) {
1510			if (--count == 0) {
1511				aac_unmap_command(cm);
1512				sc->flags |= AAC_QUEUE_FRZN;
1513				aac_requeue_ready(cm);
1514			}
1515			DELAY(5);			/* wait 5 usec. */
1516		}
1517	} else {
1518		/* Put the FIB on the outbound queue */
1519		if (aac_enqueue_fib(sc, cm->cm_queue, cm) == EBUSY) {
1520			aac_unmap_command(cm);
1521			sc->flags |= AAC_QUEUE_FRZN;
1522			aac_requeue_ready(cm);
1523		}
1524	}
1525
1526	return;
1527}
1528
1529/*
1530 * Unmap a command from controller-visible space.
1531 */
1532static void
1533aac_unmap_command(struct aac_command *cm)
1534{
1535	struct aac_softc *sc;
1536
1537	debug_called(2);
1538
1539	sc = cm->cm_sc;
1540
1541	if (!(cm->cm_flags & AAC_CMD_MAPPED))
1542		return;
1543
1544	if (cm->cm_datalen != 0) {
1545		if (cm->cm_flags & AAC_CMD_DATAIN)
1546			bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1547					BUS_DMASYNC_POSTREAD);
1548		if (cm->cm_flags & AAC_CMD_DATAOUT)
1549			bus_dmamap_sync(sc->aac_buffer_dmat, cm->cm_datamap,
1550					BUS_DMASYNC_POSTWRITE);
1551
1552		bus_dmamap_unload(sc->aac_buffer_dmat, cm->cm_datamap);
1553	}
1554	cm->cm_flags &= ~AAC_CMD_MAPPED;
1555}
1556
1557/*
1558 * Hardware Interface
1559 */
1560
1561/*
1562 * Initialise the adapter.
1563 */
1564static void
1565aac_common_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1566{
1567	struct aac_softc *sc;
1568
1569	debug_called(1);
1570
1571	sc = (struct aac_softc *)arg;
1572
1573	sc->aac_common_busaddr = segs[0].ds_addr;
1574}
1575
1576static int
1577aac_check_firmware(struct aac_softc *sc)
1578{
1579	u_int32_t major, minor, options = 0, atu_size = 0;
1580	int status;
1581
1582	debug_called(1);
1583
1584	/*
1585	 * Retrieve the firmware version numbers.  Dell PERC2/QC cards with
1586	 * firmware version 1.x are not compatible with this driver.
1587	 */
1588	if (sc->flags & AAC_FLAGS_PERC2QC) {
1589		if (aac_sync_command(sc, AAC_MONKER_GETKERNVER, 0, 0, 0, 0,
1590				     NULL)) {
1591			device_printf(sc->aac_dev,
1592				      "Error reading firmware version\n");
1593			return (EIO);
1594		}
1595
1596		/* These numbers are stored as ASCII! */
1597		major = (AAC_GET_MAILBOX(sc, 1) & 0xff) - 0x30;
1598		minor = (AAC_GET_MAILBOX(sc, 2) & 0xff) - 0x30;
1599		if (major == 1) {
1600			device_printf(sc->aac_dev,
1601			    "Firmware version %d.%d is not supported.\n",
1602			    major, minor);
1603			return (EINVAL);
1604		}
1605	}
1606
1607	/*
1608	 * Retrieve the capabilities/supported options word so we know what
1609	 * work-arounds to enable.  Some firmware revs don't support this
1610	 * command.
1611	 */
1612	if (aac_sync_command(sc, AAC_MONKER_GETINFO, 0, 0, 0, 0, &status)) {
1613		if (status != AAC_SRB_STS_INVALID_REQUEST) {
1614			device_printf(sc->aac_dev,
1615			     "RequestAdapterInfo failed\n");
1616			return (EIO);
1617		}
1618	} else {
1619		options = AAC_GET_MAILBOX(sc, 1);
1620		atu_size = AAC_GET_MAILBOX(sc, 2);
1621		sc->supported_options = options;
1622
1623		if ((options & AAC_SUPPORTED_4GB_WINDOW) != 0 &&
1624		    (sc->flags & AAC_FLAGS_NO4GB) == 0)
1625			sc->flags |= AAC_FLAGS_4GB_WINDOW;
1626		if (options & AAC_SUPPORTED_NONDASD)
1627			sc->flags |= AAC_FLAGS_ENABLE_CAM;
1628		if ((options & AAC_SUPPORTED_SGMAP_HOST64) != 0
1629		     && (sizeof(bus_addr_t) > 4)) {
1630			device_printf(sc->aac_dev,
1631			    "Enabling 64-bit address support\n");
1632			sc->flags |= AAC_FLAGS_SG_64BIT;
1633		}
1634		if ((options & AAC_SUPPORTED_NEW_COMM)
1635		 && sc->aac_if.aif_send_command)
1636			sc->flags |= AAC_FLAGS_NEW_COMM;
1637		if (options & AAC_SUPPORTED_64BIT_ARRAYSIZE)
1638			sc->flags |= AAC_FLAGS_ARRAY_64BIT;
1639	}
1640
1641	/* Check for broken hardware that does a lower number of commands */
1642	sc->aac_max_fibs = (sc->flags & AAC_FLAGS_256FIBS ? 256:512);
1643
1644	/* Remap mem. resource, if required */
1645	if ((sc->flags & AAC_FLAGS_NEW_COMM) &&
1646		atu_size > rman_get_size(sc->aac_regs_resource)) {
1647		bus_release_resource(
1648			sc->aac_dev, SYS_RES_MEMORY,
1649			sc->aac_regs_rid, sc->aac_regs_resource);
1650		sc->aac_regs_resource = bus_alloc_resource(
1651			sc->aac_dev, SYS_RES_MEMORY, &sc->aac_regs_rid,
1652			0ul, ~0ul, atu_size, RF_ACTIVE);
1653		if (sc->aac_regs_resource == NULL) {
1654			sc->aac_regs_resource = bus_alloc_resource_any(
1655				sc->aac_dev, SYS_RES_MEMORY,
1656				&sc->aac_regs_rid, RF_ACTIVE);
1657			if (sc->aac_regs_resource == NULL) {
1658				device_printf(sc->aac_dev,
1659				    "couldn't allocate register window\n");
1660				return (ENXIO);
1661			}
1662			sc->flags &= ~AAC_FLAGS_NEW_COMM;
1663		}
1664		sc->aac_btag = rman_get_bustag(sc->aac_regs_resource);
1665		sc->aac_bhandle = rman_get_bushandle(sc->aac_regs_resource);
1666	}
1667
1668	/* Read preferred settings */
1669	sc->aac_max_fib_size = sizeof(struct aac_fib);
1670	sc->aac_max_sectors = 128;				/* 64KB */
1671	if (sc->flags & AAC_FLAGS_SG_64BIT)
1672		sc->aac_sg_tablesize = (AAC_FIB_DATASIZE
1673		 - sizeof(struct aac_blockwrite64))
1674		 / sizeof(struct aac_sg_entry64);
1675	else
1676		sc->aac_sg_tablesize = (AAC_FIB_DATASIZE
1677		 - sizeof(struct aac_blockwrite))
1678		 / sizeof(struct aac_sg_entry);
1679
1680	if (!aac_sync_command(sc, AAC_MONKER_GETCOMMPREF, 0, 0, 0, 0, NULL)) {
1681		options = AAC_GET_MAILBOX(sc, 1);
1682		sc->aac_max_fib_size = (options & 0xFFFF);
1683		sc->aac_max_sectors = (options >> 16) << 1;
1684		options = AAC_GET_MAILBOX(sc, 2);
1685		sc->aac_sg_tablesize = (options >> 16);
1686		options = AAC_GET_MAILBOX(sc, 3);
1687		sc->aac_max_fibs = (options & 0xFFFF);
1688	}
1689	if (sc->aac_max_fib_size > PAGE_SIZE)
1690		sc->aac_max_fib_size = PAGE_SIZE;
1691	sc->aac_max_fibs_alloc = PAGE_SIZE / sc->aac_max_fib_size;
1692
1693	return (0);
1694}
1695
1696static int
1697aac_init(struct aac_softc *sc)
1698{
1699	struct aac_adapter_init	*ip;
1700	time_t then;
1701	u_int32_t code, qoffset;
1702	int error;
1703
1704	debug_called(1);
1705
1706	/*
1707	 * First wait for the adapter to come ready.
1708	 */
1709	then = time_uptime;
1710	do {
1711		code = AAC_GET_FWSTATUS(sc);
1712		if (code & AAC_SELF_TEST_FAILED) {
1713			device_printf(sc->aac_dev, "FATAL: selftest failed\n");
1714			return(ENXIO);
1715		}
1716		if (code & AAC_KERNEL_PANIC) {
1717			device_printf(sc->aac_dev,
1718				      "FATAL: controller kernel panic\n");
1719			return(ENXIO);
1720		}
1721		if (time_uptime > (then + AAC_BOOT_TIMEOUT)) {
1722			device_printf(sc->aac_dev,
1723				      "FATAL: controller not coming ready, "
1724					   "status %x\n", code);
1725			return(ENXIO);
1726		}
1727	} while (!(code & AAC_UP_AND_RUNNING));
1728
1729	error = ENOMEM;
1730	/*
1731	 * Create DMA tag for mapping buffers into controller-addressable space.
1732	 */
1733	if (bus_dma_tag_create(sc->aac_parent_dmat, 	/* parent */
1734			       1, 0, 			/* algnmnt, boundary */
1735			       (sc->flags & AAC_FLAGS_SG_64BIT) ?
1736			       BUS_SPACE_MAXADDR :
1737			       BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
1738			       BUS_SPACE_MAXADDR, 	/* highaddr */
1739			       NULL, NULL, 		/* filter, filterarg */
1740			       MAXBSIZE,		/* maxsize */
1741			       sc->aac_sg_tablesize,	/* nsegments */
1742			       MAXBSIZE,		/* maxsegsize */
1743			       BUS_DMA_ALLOCNOW,	/* flags */
1744			       busdma_lock_mutex,	/* lockfunc */
1745			       &sc->aac_io_lock,	/* lockfuncarg */
1746			       &sc->aac_buffer_dmat)) {
1747		device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n");
1748		goto out;
1749	}
1750
1751	/*
1752	 * Create DMA tag for mapping FIBs into controller-addressable space..
1753	 */
1754	if (bus_dma_tag_create(sc->aac_parent_dmat,	/* parent */
1755			       1, 0, 			/* algnmnt, boundary */
1756			       (sc->flags & AAC_FLAGS_4GB_WINDOW) ?
1757			       BUS_SPACE_MAXADDR_32BIT :
1758			       0x7fffffff,		/* lowaddr */
1759			       BUS_SPACE_MAXADDR, 	/* highaddr */
1760			       NULL, NULL, 		/* filter, filterarg */
1761			       sc->aac_max_fibs_alloc *
1762			       sc->aac_max_fib_size,  /* maxsize */
1763			       1,			/* nsegments */
1764			       sc->aac_max_fibs_alloc *
1765			       sc->aac_max_fib_size,	/* maxsegsize */
1766			       0,			/* flags */
1767			       NULL, NULL,		/* No locking needed */
1768			       &sc->aac_fib_dmat)) {
1769		device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");;
1770		goto out;
1771	}
1772
1773	/*
1774	 * Create DMA tag for the common structure and allocate it.
1775	 */
1776	if (bus_dma_tag_create(sc->aac_parent_dmat, 	/* parent */
1777			       1, 0,			/* algnmnt, boundary */
1778			       (sc->flags & AAC_FLAGS_4GB_WINDOW) ?
1779			       BUS_SPACE_MAXADDR_32BIT :
1780			       0x7fffffff,		/* lowaddr */
1781			       BUS_SPACE_MAXADDR, 	/* highaddr */
1782			       NULL, NULL, 		/* filter, filterarg */
1783			       8192 + sizeof(struct aac_common), /* maxsize */
1784			       1,			/* nsegments */
1785			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
1786			       0,			/* flags */
1787			       NULL, NULL,		/* No locking needed */
1788			       &sc->aac_common_dmat)) {
1789		device_printf(sc->aac_dev,
1790			      "can't allocate common structure DMA tag\n");
1791		goto out;
1792	}
1793	if (bus_dmamem_alloc(sc->aac_common_dmat, (void **)&sc->aac_common,
1794			     BUS_DMA_NOWAIT, &sc->aac_common_dmamap)) {
1795		device_printf(sc->aac_dev, "can't allocate common structure\n");
1796		goto out;
1797	}
1798
1799	/*
1800	 * Work around a bug in the 2120 and 2200 that cannot DMA commands
1801	 * below address 8192 in physical memory.
1802	 * XXX If the padding is not needed, can it be put to use instead
1803	 * of ignored?
1804	 */
1805	(void)bus_dmamap_load(sc->aac_common_dmat, sc->aac_common_dmamap,
1806			sc->aac_common, 8192 + sizeof(*sc->aac_common),
1807			aac_common_map, sc, 0);
1808
1809	if (sc->aac_common_busaddr < 8192) {
1810		sc->aac_common = (struct aac_common *)
1811		    ((uint8_t *)sc->aac_common + 8192);
1812		sc->aac_common_busaddr += 8192;
1813	}
1814	bzero(sc->aac_common, sizeof(*sc->aac_common));
1815
1816	/* Allocate some FIBs and associated command structs */
1817	TAILQ_INIT(&sc->aac_fibmap_tqh);
1818	sc->aac_commands = malloc(sc->aac_max_fibs * sizeof(struct aac_command),
1819				  M_AACBUF, M_WAITOK|M_ZERO);
1820	while (sc->total_fibs < AAC_PREALLOCATE_FIBS) {
1821		if (aac_alloc_commands(sc) != 0)
1822			break;
1823	}
1824	if (sc->total_fibs == 0)
1825		goto out;
1826
1827	/*
1828	 * Fill in the init structure.  This tells the adapter about the
1829	 * physical location of various important shared data structures.
1830	 */
1831	ip = &sc->aac_common->ac_init;
1832	ip->InitStructRevision = AAC_INIT_STRUCT_REVISION;
1833	if (sc->aac_max_fib_size > sizeof(struct aac_fib)) {
1834		ip->InitStructRevision = AAC_INIT_STRUCT_REVISION_4;
1835		sc->flags |= AAC_FLAGS_RAW_IO;
1836	}
1837	ip->MiniPortRevision = AAC_INIT_STRUCT_MINIPORT_REVISION;
1838
1839	ip->AdapterFibsPhysicalAddress = sc->aac_common_busaddr +
1840					 offsetof(struct aac_common, ac_fibs);
1841	ip->AdapterFibsVirtualAddress = 0;
1842	ip->AdapterFibsSize = AAC_ADAPTER_FIBS * sizeof(struct aac_fib);
1843	ip->AdapterFibAlign = sizeof(struct aac_fib);
1844
1845	ip->PrintfBufferAddress = sc->aac_common_busaddr +
1846				  offsetof(struct aac_common, ac_printf);
1847	ip->PrintfBufferSize = AAC_PRINTF_BUFSIZE;
1848
1849	/*
1850	 * The adapter assumes that pages are 4K in size, except on some
1851 	 * broken firmware versions that do the page->byte conversion twice,
1852	 * therefore 'assuming' that this value is in 16MB units (2^24).
1853	 * Round up since the granularity is so high.
1854	 */
1855	ip->HostPhysMemPages = ctob(physmem) / AAC_PAGE_SIZE;
1856	if (sc->flags & AAC_FLAGS_BROKEN_MEMMAP) {
1857		ip->HostPhysMemPages =
1858		    (ip->HostPhysMemPages + AAC_PAGE_SIZE) / AAC_PAGE_SIZE;
1859	}
1860	ip->HostElapsedSeconds = time_uptime;	/* reset later if invalid */
1861
1862	ip->InitFlags = 0;
1863	if (sc->flags & AAC_FLAGS_NEW_COMM) {
1864		ip->InitFlags = INITFLAGS_NEW_COMM_SUPPORTED;
1865		device_printf(sc->aac_dev, "New comm. interface enabled\n");
1866	}
1867
1868	ip->MaxIoCommands = sc->aac_max_fibs;
1869	ip->MaxIoSize = sc->aac_max_sectors << 9;
1870	ip->MaxFibSize = sc->aac_max_fib_size;
1871
1872	/*
1873	 * Initialise FIB queues.  Note that it appears that the layout of the
1874	 * indexes and the segmentation of the entries may be mandated by the
1875	 * adapter, which is only told about the base of the queue index fields.
1876	 *
1877	 * The initial values of the indices are assumed to inform the adapter
1878	 * of the sizes of the respective queues, and theoretically it could
1879	 * work out the entire layout of the queue structures from this.  We
1880	 * take the easy route and just lay this area out like everyone else
1881	 * does.
1882	 *
1883	 * The Linux driver uses a much more complex scheme whereby several
1884	 * header records are kept for each queue.  We use a couple of generic
1885	 * list manipulation functions which 'know' the size of each list by
1886	 * virtue of a table.
1887	 */
1888	qoffset = offsetof(struct aac_common, ac_qbuf) + AAC_QUEUE_ALIGN;
1889	qoffset &= ~(AAC_QUEUE_ALIGN - 1);
1890	sc->aac_queues =
1891	    (struct aac_queue_table *)((uintptr_t)sc->aac_common + qoffset);
1892	ip->CommHeaderAddress = sc->aac_common_busaddr + qoffset;
1893
1894	sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1895		AAC_HOST_NORM_CMD_ENTRIES;
1896	sc->aac_queues->qt_qindex[AAC_HOST_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1897		AAC_HOST_NORM_CMD_ENTRIES;
1898	sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1899		AAC_HOST_HIGH_CMD_ENTRIES;
1900	sc->aac_queues->qt_qindex[AAC_HOST_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1901		AAC_HOST_HIGH_CMD_ENTRIES;
1902	sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1903		AAC_ADAP_NORM_CMD_ENTRIES;
1904	sc->aac_queues->qt_qindex[AAC_ADAP_NORM_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1905		AAC_ADAP_NORM_CMD_ENTRIES;
1906	sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_PRODUCER_INDEX] =
1907		AAC_ADAP_HIGH_CMD_ENTRIES;
1908	sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_CMD_QUEUE][AAC_CONSUMER_INDEX] =
1909		AAC_ADAP_HIGH_CMD_ENTRIES;
1910	sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1911		AAC_HOST_NORM_RESP_ENTRIES;
1912	sc->aac_queues->qt_qindex[AAC_HOST_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1913		AAC_HOST_NORM_RESP_ENTRIES;
1914	sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1915		AAC_HOST_HIGH_RESP_ENTRIES;
1916	sc->aac_queues->qt_qindex[AAC_HOST_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1917		AAC_HOST_HIGH_RESP_ENTRIES;
1918	sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1919		AAC_ADAP_NORM_RESP_ENTRIES;
1920	sc->aac_queues->qt_qindex[AAC_ADAP_NORM_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1921		AAC_ADAP_NORM_RESP_ENTRIES;
1922	sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_PRODUCER_INDEX]=
1923		AAC_ADAP_HIGH_RESP_ENTRIES;
1924	sc->aac_queues->qt_qindex[AAC_ADAP_HIGH_RESP_QUEUE][AAC_CONSUMER_INDEX]=
1925		AAC_ADAP_HIGH_RESP_ENTRIES;
1926	sc->aac_qentries[AAC_HOST_NORM_CMD_QUEUE] =
1927		&sc->aac_queues->qt_HostNormCmdQueue[0];
1928	sc->aac_qentries[AAC_HOST_HIGH_CMD_QUEUE] =
1929		&sc->aac_queues->qt_HostHighCmdQueue[0];
1930	sc->aac_qentries[AAC_ADAP_NORM_CMD_QUEUE] =
1931		&sc->aac_queues->qt_AdapNormCmdQueue[0];
1932	sc->aac_qentries[AAC_ADAP_HIGH_CMD_QUEUE] =
1933		&sc->aac_queues->qt_AdapHighCmdQueue[0];
1934	sc->aac_qentries[AAC_HOST_NORM_RESP_QUEUE] =
1935		&sc->aac_queues->qt_HostNormRespQueue[0];
1936	sc->aac_qentries[AAC_HOST_HIGH_RESP_QUEUE] =
1937		&sc->aac_queues->qt_HostHighRespQueue[0];
1938	sc->aac_qentries[AAC_ADAP_NORM_RESP_QUEUE] =
1939		&sc->aac_queues->qt_AdapNormRespQueue[0];
1940	sc->aac_qentries[AAC_ADAP_HIGH_RESP_QUEUE] =
1941		&sc->aac_queues->qt_AdapHighRespQueue[0];
1942
1943	/*
1944	 * Do controller-type-specific initialisation
1945	 */
1946	switch (sc->aac_hwif) {
1947	case AAC_HWIF_I960RX:
1948		AAC_SETREG4(sc, AAC_RX_ODBR, ~0);
1949		break;
1950	case AAC_HWIF_RKT:
1951		AAC_SETREG4(sc, AAC_RKT_ODBR, ~0);
1952		break;
1953	default:
1954		break;
1955	}
1956
1957	/*
1958	 * Give the init structure to the controller.
1959	 */
1960	if (aac_sync_command(sc, AAC_MONKER_INITSTRUCT,
1961			     sc->aac_common_busaddr +
1962			     offsetof(struct aac_common, ac_init), 0, 0, 0,
1963			     NULL)) {
1964		device_printf(sc->aac_dev,
1965			      "error establishing init structure\n");
1966		error = EIO;
1967		goto out;
1968	}
1969
1970	error = 0;
1971out:
1972	return(error);
1973}
1974
1975/*
1976 * Send a synchronous command to the controller and wait for a result.
1977 * Indicate if the controller completed the command with an error status.
1978 */
1979static int
1980aac_sync_command(struct aac_softc *sc, u_int32_t command,
1981		 u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3,
1982		 u_int32_t *sp)
1983{
1984	time_t then;
1985	u_int32_t status;
1986
1987	debug_called(3);
1988
1989	/* populate the mailbox */
1990	AAC_SET_MAILBOX(sc, command, arg0, arg1, arg2, arg3);
1991
1992	/* ensure the sync command doorbell flag is cleared */
1993	AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
1994
1995	/* then set it to signal the adapter */
1996	AAC_QNOTIFY(sc, AAC_DB_SYNC_COMMAND);
1997
1998	/* spin waiting for the command to complete */
1999	then = time_uptime;
2000	do {
2001		if (time_uptime > (then + AAC_IMMEDIATE_TIMEOUT)) {
2002			debug(1, "timed out");
2003			return(EIO);
2004		}
2005	} while (!(AAC_GET_ISTATUS(sc) & AAC_DB_SYNC_COMMAND));
2006
2007	/* clear the completion flag */
2008	AAC_CLEAR_ISTATUS(sc, AAC_DB_SYNC_COMMAND);
2009
2010	/* get the command status */
2011	status = AAC_GET_MAILBOX(sc, 0);
2012	if (sp != NULL)
2013		*sp = status;
2014
2015	if (status != AAC_SRB_STS_SUCCESS)
2016		return (-1);
2017	return(0);
2018}
2019
2020int
2021aac_sync_fib(struct aac_softc *sc, u_int32_t command, u_int32_t xferstate,
2022		 struct aac_fib *fib, u_int16_t datasize)
2023{
2024	debug_called(3);
2025	mtx_assert(&sc->aac_io_lock, MA_OWNED);
2026
2027	if (datasize > AAC_FIB_DATASIZE)
2028		return(EINVAL);
2029
2030	/*
2031	 * Set up the sync FIB
2032	 */
2033	fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED |
2034				AAC_FIBSTATE_INITIALISED |
2035				AAC_FIBSTATE_EMPTY;
2036	fib->Header.XferState |= xferstate;
2037	fib->Header.Command = command;
2038	fib->Header.StructType = AAC_FIBTYPE_TFIB;
2039	fib->Header.Size = sizeof(struct aac_fib) + datasize;
2040	fib->Header.SenderSize = sizeof(struct aac_fib);
2041	fib->Header.SenderFibAddress = 0;	/* Not needed */
2042	fib->Header.ReceiverFibAddress = sc->aac_common_busaddr +
2043					 offsetof(struct aac_common,
2044						  ac_sync_fib);
2045
2046	/*
2047	 * Give the FIB to the controller, wait for a response.
2048	 */
2049	if (aac_sync_command(sc, AAC_MONKER_SYNCFIB,
2050			     fib->Header.ReceiverFibAddress, 0, 0, 0, NULL)) {
2051		debug(2, "IO error");
2052		return(EIO);
2053	}
2054
2055	return (0);
2056}
2057
2058/*
2059 * Adapter-space FIB queue manipulation
2060 *
2061 * Note that the queue implementation here is a little funky; neither the PI or
2062 * CI will ever be zero.  This behaviour is a controller feature.
2063 */
2064static struct {
2065	int		size;
2066	int		notify;
2067} aac_qinfo[] = {
2068	{AAC_HOST_NORM_CMD_ENTRIES, AAC_DB_COMMAND_NOT_FULL},
2069	{AAC_HOST_HIGH_CMD_ENTRIES, 0},
2070	{AAC_ADAP_NORM_CMD_ENTRIES, AAC_DB_COMMAND_READY},
2071	{AAC_ADAP_HIGH_CMD_ENTRIES, 0},
2072	{AAC_HOST_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_NOT_FULL},
2073	{AAC_HOST_HIGH_RESP_ENTRIES, 0},
2074	{AAC_ADAP_NORM_RESP_ENTRIES, AAC_DB_RESPONSE_READY},
2075	{AAC_ADAP_HIGH_RESP_ENTRIES, 0}
2076};
2077
2078/*
2079 * Atomically insert an entry into the nominated queue, returns 0 on success or
2080 * EBUSY if the queue is full.
2081 *
2082 * Note: it would be more efficient to defer notifying the controller in
2083 *	 the case where we may be inserting several entries in rapid succession,
2084 *	 but implementing this usefully may be difficult (it would involve a
2085 *	 separate queue/notify interface).
2086 */
2087static int
2088aac_enqueue_fib(struct aac_softc *sc, int queue, struct aac_command *cm)
2089{
2090	u_int32_t pi, ci;
2091	int error;
2092	u_int32_t fib_size;
2093	u_int32_t fib_addr;
2094
2095	debug_called(3);
2096
2097	fib_size = cm->cm_fib->Header.Size;
2098	fib_addr = cm->cm_fib->Header.ReceiverFibAddress;
2099
2100	/* get the producer/consumer indices */
2101	pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
2102	ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
2103
2104	/* wrap the queue? */
2105	if (pi >= aac_qinfo[queue].size)
2106		pi = 0;
2107
2108	/* check for queue full */
2109	if ((pi + 1) == ci) {
2110		error = EBUSY;
2111		goto out;
2112	}
2113
2114	/*
2115	 * To avoid a race with its completion interrupt, place this command on
2116	 * the busy queue prior to advertising it to the controller.
2117	 */
2118	aac_enqueue_busy(cm);
2119
2120	/* populate queue entry */
2121	(sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
2122	(sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
2123
2124	/* update producer index */
2125	sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
2126
2127	/* notify the adapter if we know how */
2128	if (aac_qinfo[queue].notify != 0)
2129		AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
2130
2131	error = 0;
2132
2133out:
2134	return(error);
2135}
2136
2137/*
2138 * Atomically remove one entry from the nominated queue, returns 0 on
2139 * success or ENOENT if the queue is empty.
2140 */
2141static int
2142aac_dequeue_fib(struct aac_softc *sc, int queue, u_int32_t *fib_size,
2143		struct aac_fib **fib_addr)
2144{
2145	u_int32_t pi, ci;
2146	u_int32_t fib_index;
2147	int error;
2148	int notify;
2149
2150	debug_called(3);
2151
2152	/* get the producer/consumer indices */
2153	pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
2154	ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
2155
2156	/* check for queue empty */
2157	if (ci == pi) {
2158		error = ENOENT;
2159		goto out;
2160	}
2161
2162	/* wrap the pi so the following test works */
2163	if (pi >= aac_qinfo[queue].size)
2164		pi = 0;
2165
2166	notify = 0;
2167	if (ci == pi + 1)
2168		notify++;
2169
2170	/* wrap the queue? */
2171	if (ci >= aac_qinfo[queue].size)
2172		ci = 0;
2173
2174	/* fetch the entry */
2175	*fib_size = (sc->aac_qentries[queue] + ci)->aq_fib_size;
2176
2177	switch (queue) {
2178	case AAC_HOST_NORM_CMD_QUEUE:
2179	case AAC_HOST_HIGH_CMD_QUEUE:
2180		/*
2181		 * The aq_fib_addr is only 32 bits wide so it can't be counted
2182		 * on to hold an address.  For AIF's, the adapter assumes
2183		 * that it's giving us an address into the array of AIF fibs.
2184		 * Therefore, we have to convert it to an index.
2185		 */
2186		fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr /
2187			sizeof(struct aac_fib);
2188		*fib_addr = &sc->aac_common->ac_fibs[fib_index];
2189		break;
2190
2191	case AAC_HOST_NORM_RESP_QUEUE:
2192	case AAC_HOST_HIGH_RESP_QUEUE:
2193	{
2194		struct aac_command *cm;
2195
2196		/*
2197		 * As above, an index is used instead of an actual address.
2198		 * Gotta shift the index to account for the fast response
2199		 * bit.  No other correction is needed since this value was
2200		 * originally provided by the driver via the SenderFibAddress
2201		 * field.
2202		 */
2203		fib_index = (sc->aac_qentries[queue] + ci)->aq_fib_addr;
2204		cm = sc->aac_commands + (fib_index >> 2);
2205		*fib_addr = cm->cm_fib;
2206
2207		/*
2208		 * Is this a fast response? If it is, update the fib fields in
2209		 * local memory since the whole fib isn't DMA'd back up.
2210		 */
2211		if (fib_index & 0x01) {
2212			(*fib_addr)->Header.XferState |= AAC_FIBSTATE_DONEADAP;
2213			*((u_int32_t*)((*fib_addr)->data)) = AAC_ERROR_NORMAL;
2214		}
2215		break;
2216	}
2217	default:
2218		panic("Invalid queue in aac_dequeue_fib()");
2219		break;
2220	}
2221
2222	/* update consumer index */
2223	sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX] = ci + 1;
2224
2225	/* if we have made the queue un-full, notify the adapter */
2226	if (notify && (aac_qinfo[queue].notify != 0))
2227		AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
2228	error = 0;
2229
2230out:
2231	return(error);
2232}
2233
2234/*
2235 * Put our response to an Adapter Initialed Fib on the response queue
2236 */
2237static int
2238aac_enqueue_response(struct aac_softc *sc, int queue, struct aac_fib *fib)
2239{
2240	u_int32_t pi, ci;
2241	int error;
2242	u_int32_t fib_size;
2243	u_int32_t fib_addr;
2244
2245	debug_called(1);
2246
2247	/* Tell the adapter where the FIB is */
2248	fib_size = fib->Header.Size;
2249	fib_addr = fib->Header.SenderFibAddress;
2250	fib->Header.ReceiverFibAddress = fib_addr;
2251
2252	/* get the producer/consumer indices */
2253	pi = sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX];
2254	ci = sc->aac_queues->qt_qindex[queue][AAC_CONSUMER_INDEX];
2255
2256	/* wrap the queue? */
2257	if (pi >= aac_qinfo[queue].size)
2258		pi = 0;
2259
2260	/* check for queue full */
2261	if ((pi + 1) == ci) {
2262		error = EBUSY;
2263		goto out;
2264	}
2265
2266	/* populate queue entry */
2267	(sc->aac_qentries[queue] + pi)->aq_fib_size = fib_size;
2268	(sc->aac_qentries[queue] + pi)->aq_fib_addr = fib_addr;
2269
2270	/* update producer index */
2271	sc->aac_queues->qt_qindex[queue][AAC_PRODUCER_INDEX] = pi + 1;
2272
2273	/* notify the adapter if we know how */
2274	if (aac_qinfo[queue].notify != 0)
2275		AAC_QNOTIFY(sc, aac_qinfo[queue].notify);
2276
2277	error = 0;
2278
2279out:
2280	return(error);
2281}
2282
2283/*
2284 * Check for commands that have been outstanding for a suspiciously long time,
2285 * and complain about them.
2286 */
2287static void
2288aac_timeout(struct aac_softc *sc)
2289{
2290	struct aac_command *cm;
2291	time_t deadline;
2292	int timedout, code;
2293
2294	/*
2295	 * Traverse the busy command list, bitch about late commands once
2296	 * only.
2297	 */
2298	timedout = 0;
2299	deadline = time_uptime - AAC_CMD_TIMEOUT;
2300	TAILQ_FOREACH(cm, &sc->aac_busy, cm_link) {
2301		if ((cm->cm_timestamp  < deadline)
2302			/* && !(cm->cm_flags & AAC_CMD_TIMEDOUT) */) {
2303			cm->cm_flags |= AAC_CMD_TIMEDOUT;
2304			device_printf(sc->aac_dev,
2305				      "COMMAND %p TIMEOUT AFTER %d SECONDS\n",
2306				      cm, (int)(time_uptime-cm->cm_timestamp));
2307			AAC_PRINT_FIB(sc, cm->cm_fib);
2308			timedout++;
2309		}
2310	}
2311
2312	if (timedout) {
2313		code = AAC_GET_FWSTATUS(sc);
2314		if (code != AAC_UP_AND_RUNNING) {
2315			device_printf(sc->aac_dev, "WARNING! Controller is no "
2316				      "longer running! code= 0x%x\n", code);
2317		}
2318	}
2319	return;
2320}
2321
2322/*
2323 * Interface Function Vectors
2324 */
2325
2326/*
2327 * Read the current firmware status word.
2328 */
2329static int
2330aac_sa_get_fwstatus(struct aac_softc *sc)
2331{
2332	debug_called(3);
2333
2334	return(AAC_GETREG4(sc, AAC_SA_FWSTATUS));
2335}
2336
2337static int
2338aac_rx_get_fwstatus(struct aac_softc *sc)
2339{
2340	debug_called(3);
2341
2342	return(AAC_GETREG4(sc, AAC_RX_FWSTATUS));
2343}
2344
2345static int
2346aac_fa_get_fwstatus(struct aac_softc *sc)
2347{
2348	int val;
2349
2350	debug_called(3);
2351
2352	val = AAC_GETREG4(sc, AAC_FA_FWSTATUS);
2353	return (val);
2354}
2355
2356static int
2357aac_rkt_get_fwstatus(struct aac_softc *sc)
2358{
2359	debug_called(3);
2360
2361	return(AAC_GETREG4(sc, AAC_RKT_FWSTATUS));
2362}
2363
2364/*
2365 * Notify the controller of a change in a given queue
2366 */
2367
2368static void
2369aac_sa_qnotify(struct aac_softc *sc, int qbit)
2370{
2371	debug_called(3);
2372
2373	AAC_SETREG2(sc, AAC_SA_DOORBELL1_SET, qbit);
2374}
2375
2376static void
2377aac_rx_qnotify(struct aac_softc *sc, int qbit)
2378{
2379	debug_called(3);
2380
2381	AAC_SETREG4(sc, AAC_RX_IDBR, qbit);
2382}
2383
2384static void
2385aac_fa_qnotify(struct aac_softc *sc, int qbit)
2386{
2387	debug_called(3);
2388
2389	AAC_SETREG2(sc, AAC_FA_DOORBELL1, qbit);
2390	AAC_FA_HACK(sc);
2391}
2392
2393static void
2394aac_rkt_qnotify(struct aac_softc *sc, int qbit)
2395{
2396	debug_called(3);
2397
2398	AAC_SETREG4(sc, AAC_RKT_IDBR, qbit);
2399}
2400
2401/*
2402 * Get the interrupt reason bits
2403 */
2404static int
2405aac_sa_get_istatus(struct aac_softc *sc)
2406{
2407	debug_called(3);
2408
2409	return(AAC_GETREG2(sc, AAC_SA_DOORBELL0));
2410}
2411
2412static int
2413aac_rx_get_istatus(struct aac_softc *sc)
2414{
2415	debug_called(3);
2416
2417	return(AAC_GETREG4(sc, AAC_RX_ODBR));
2418}
2419
2420static int
2421aac_fa_get_istatus(struct aac_softc *sc)
2422{
2423	int val;
2424
2425	debug_called(3);
2426
2427	val = AAC_GETREG2(sc, AAC_FA_DOORBELL0);
2428	return (val);
2429}
2430
2431static int
2432aac_rkt_get_istatus(struct aac_softc *sc)
2433{
2434	debug_called(3);
2435
2436	return(AAC_GETREG4(sc, AAC_RKT_ODBR));
2437}
2438
2439/*
2440 * Clear some interrupt reason bits
2441 */
2442static void
2443aac_sa_clear_istatus(struct aac_softc *sc, int mask)
2444{
2445	debug_called(3);
2446
2447	AAC_SETREG2(sc, AAC_SA_DOORBELL0_CLEAR, mask);
2448}
2449
2450static void
2451aac_rx_clear_istatus(struct aac_softc *sc, int mask)
2452{
2453	debug_called(3);
2454
2455	AAC_SETREG4(sc, AAC_RX_ODBR, mask);
2456}
2457
2458static void
2459aac_fa_clear_istatus(struct aac_softc *sc, int mask)
2460{
2461	debug_called(3);
2462
2463	AAC_SETREG2(sc, AAC_FA_DOORBELL0_CLEAR, mask);
2464	AAC_FA_HACK(sc);
2465}
2466
2467static void
2468aac_rkt_clear_istatus(struct aac_softc *sc, int mask)
2469{
2470	debug_called(3);
2471
2472	AAC_SETREG4(sc, AAC_RKT_ODBR, mask);
2473}
2474
2475/*
2476 * Populate the mailbox and set the command word
2477 */
2478static void
2479aac_sa_set_mailbox(struct aac_softc *sc, u_int32_t command,
2480		u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2481{
2482	debug_called(4);
2483
2484	AAC_SETREG4(sc, AAC_SA_MAILBOX, command);
2485	AAC_SETREG4(sc, AAC_SA_MAILBOX + 4, arg0);
2486	AAC_SETREG4(sc, AAC_SA_MAILBOX + 8, arg1);
2487	AAC_SETREG4(sc, AAC_SA_MAILBOX + 12, arg2);
2488	AAC_SETREG4(sc, AAC_SA_MAILBOX + 16, arg3);
2489}
2490
2491static void
2492aac_rx_set_mailbox(struct aac_softc *sc, u_int32_t command,
2493		u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2494{
2495	debug_called(4);
2496
2497	AAC_SETREG4(sc, AAC_RX_MAILBOX, command);
2498	AAC_SETREG4(sc, AAC_RX_MAILBOX + 4, arg0);
2499	AAC_SETREG4(sc, AAC_RX_MAILBOX + 8, arg1);
2500	AAC_SETREG4(sc, AAC_RX_MAILBOX + 12, arg2);
2501	AAC_SETREG4(sc, AAC_RX_MAILBOX + 16, arg3);
2502}
2503
2504static void
2505aac_fa_set_mailbox(struct aac_softc *sc, u_int32_t command,
2506		u_int32_t arg0, u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2507{
2508	debug_called(4);
2509
2510	AAC_SETREG4(sc, AAC_FA_MAILBOX, command);
2511	AAC_FA_HACK(sc);
2512	AAC_SETREG4(sc, AAC_FA_MAILBOX + 4, arg0);
2513	AAC_FA_HACK(sc);
2514	AAC_SETREG4(sc, AAC_FA_MAILBOX + 8, arg1);
2515	AAC_FA_HACK(sc);
2516	AAC_SETREG4(sc, AAC_FA_MAILBOX + 12, arg2);
2517	AAC_FA_HACK(sc);
2518	AAC_SETREG4(sc, AAC_FA_MAILBOX + 16, arg3);
2519	AAC_FA_HACK(sc);
2520}
2521
2522static void
2523aac_rkt_set_mailbox(struct aac_softc *sc, u_int32_t command, u_int32_t arg0,
2524		    u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
2525{
2526	debug_called(4);
2527
2528	AAC_SETREG4(sc, AAC_RKT_MAILBOX, command);
2529	AAC_SETREG4(sc, AAC_RKT_MAILBOX + 4, arg0);
2530	AAC_SETREG4(sc, AAC_RKT_MAILBOX + 8, arg1);
2531	AAC_SETREG4(sc, AAC_RKT_MAILBOX + 12, arg2);
2532	AAC_SETREG4(sc, AAC_RKT_MAILBOX + 16, arg3);
2533}
2534
2535/*
2536 * Fetch the immediate command status word
2537 */
2538static int
2539aac_sa_get_mailbox(struct aac_softc *sc, int mb)
2540{
2541	debug_called(4);
2542
2543	return(AAC_GETREG4(sc, AAC_SA_MAILBOX + (mb * 4)));
2544}
2545
2546static int
2547aac_rx_get_mailbox(struct aac_softc *sc, int mb)
2548{
2549	debug_called(4);
2550
2551	return(AAC_GETREG4(sc, AAC_RX_MAILBOX + (mb * 4)));
2552}
2553
2554static int
2555aac_fa_get_mailbox(struct aac_softc *sc, int mb)
2556{
2557	int val;
2558
2559	debug_called(4);
2560
2561	val = AAC_GETREG4(sc, AAC_FA_MAILBOX + (mb * 4));
2562	return (val);
2563}
2564
2565static int
2566aac_rkt_get_mailbox(struct aac_softc *sc, int mb)
2567{
2568	debug_called(4);
2569
2570	return(AAC_GETREG4(sc, AAC_RKT_MAILBOX + (mb * 4)));
2571}
2572
2573/*
2574 * Set/clear interrupt masks
2575 */
2576static void
2577aac_sa_set_interrupts(struct aac_softc *sc, int enable)
2578{
2579	debug(2, "%sable interrupts", enable ? "en" : "dis");
2580
2581	if (enable) {
2582		AAC_SETREG2((sc), AAC_SA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
2583	} else {
2584		AAC_SETREG2((sc), AAC_SA_MASK0_SET, ~0);
2585	}
2586}
2587
2588static void
2589aac_rx_set_interrupts(struct aac_softc *sc, int enable)
2590{
2591	debug(2, "%sable interrupts", enable ? "en" : "dis");
2592
2593	if (enable) {
2594		if (sc->flags & AAC_FLAGS_NEW_COMM)
2595			AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INT_NEW_COMM);
2596		else
2597			AAC_SETREG4(sc, AAC_RX_OIMR, ~AAC_DB_INTERRUPTS);
2598	} else {
2599		AAC_SETREG4(sc, AAC_RX_OIMR, ~0);
2600	}
2601}
2602
2603static void
2604aac_fa_set_interrupts(struct aac_softc *sc, int enable)
2605{
2606	debug(2, "%sable interrupts", enable ? "en" : "dis");
2607
2608	if (enable) {
2609		AAC_SETREG2((sc), AAC_FA_MASK0_CLEAR, AAC_DB_INTERRUPTS);
2610		AAC_FA_HACK(sc);
2611	} else {
2612		AAC_SETREG2((sc), AAC_FA_MASK0, ~0);
2613		AAC_FA_HACK(sc);
2614	}
2615}
2616
2617static void
2618aac_rkt_set_interrupts(struct aac_softc *sc, int enable)
2619{
2620	debug(2, "%sable interrupts", enable ? "en" : "dis");
2621
2622	if (enable) {
2623		if (sc->flags & AAC_FLAGS_NEW_COMM)
2624			AAC_SETREG4(sc, AAC_RKT_OIMR, ~AAC_DB_INT_NEW_COMM);
2625		else
2626			AAC_SETREG4(sc, AAC_RKT_OIMR, ~AAC_DB_INTERRUPTS);
2627	} else {
2628		AAC_SETREG4(sc, AAC_RKT_OIMR, ~0);
2629	}
2630}
2631
2632/*
2633 * New comm. interface: Send command functions
2634 */
2635static int
2636aac_rx_send_command(struct aac_softc *sc, struct aac_command *cm)
2637{
2638	u_int32_t index, device;
2639
2640	debug(2, "send command (new comm.)");
2641
2642	index = AAC_GETREG4(sc, AAC_RX_IQUE);
2643	if (index == 0xffffffffL)
2644		index = AAC_GETREG4(sc, AAC_RX_IQUE);
2645	if (index == 0xffffffffL)
2646		return index;
2647	aac_enqueue_busy(cm);
2648	device = index;
2649	AAC_SETREG4(sc, device, (u_int32_t)(cm->cm_fibphys & 0xffffffffUL));
2650	device += 4;
2651	AAC_SETREG4(sc, device, (u_int32_t)(cm->cm_fibphys >> 32));
2652	device += 4;
2653	AAC_SETREG4(sc, device, cm->cm_fib->Header.Size);
2654	AAC_SETREG4(sc, AAC_RX_IQUE, index);
2655	return 0;
2656}
2657
2658static int
2659aac_rkt_send_command(struct aac_softc *sc, struct aac_command *cm)
2660{
2661	u_int32_t index, device;
2662
2663	debug(2, "send command (new comm.)");
2664
2665	index = AAC_GETREG4(sc, AAC_RKT_IQUE);
2666	if (index == 0xffffffffL)
2667		index = AAC_GETREG4(sc, AAC_RKT_IQUE);
2668	if (index == 0xffffffffL)
2669		return index;
2670	aac_enqueue_busy(cm);
2671	device = index;
2672	AAC_SETREG4(sc, device, (u_int32_t)(cm->cm_fibphys & 0xffffffffUL));
2673	device += 4;
2674	AAC_SETREG4(sc, device, (u_int32_t)(cm->cm_fibphys >> 32));
2675	device += 4;
2676	AAC_SETREG4(sc, device, cm->cm_fib->Header.Size);
2677	AAC_SETREG4(sc, AAC_RKT_IQUE, index);
2678	return 0;
2679}
2680
2681/*
2682 * New comm. interface: get, set outbound queue index
2683 */
2684static int
2685aac_rx_get_outb_queue(struct aac_softc *sc)
2686{
2687	debug_called(3);
2688
2689	return(AAC_GETREG4(sc, AAC_RX_OQUE));
2690}
2691
2692static int
2693aac_rkt_get_outb_queue(struct aac_softc *sc)
2694{
2695	debug_called(3);
2696
2697	return(AAC_GETREG4(sc, AAC_RKT_OQUE));
2698}
2699
2700static void
2701aac_rx_set_outb_queue(struct aac_softc *sc, int index)
2702{
2703	debug_called(3);
2704
2705	AAC_SETREG4(sc, AAC_RX_OQUE, index);
2706}
2707
2708static void
2709aac_rkt_set_outb_queue(struct aac_softc *sc, int index)
2710{
2711	debug_called(3);
2712
2713	AAC_SETREG4(sc, AAC_RKT_OQUE, index);
2714}
2715
2716/*
2717 * Debugging and Diagnostics
2718 */
2719
2720/*
2721 * Print some information about the controller.
2722 */
2723static void
2724aac_describe_controller(struct aac_softc *sc)
2725{
2726	struct aac_fib *fib;
2727	struct aac_adapter_info	*info;
2728
2729	debug_called(2);
2730
2731	mtx_lock(&sc->aac_io_lock);
2732	aac_alloc_sync_fib(sc, &fib);
2733
2734	fib->data[0] = 0;
2735	if (aac_sync_fib(sc, RequestAdapterInfo, 0, fib, 1)) {
2736		device_printf(sc->aac_dev, "RequestAdapterInfo failed\n");
2737		aac_release_sync_fib(sc);
2738		mtx_unlock(&sc->aac_io_lock);
2739		return;
2740	}
2741
2742	/* save the kernel revision structure for later use */
2743	info = (struct aac_adapter_info *)&fib->data[0];
2744	sc->aac_revision = info->KernelRevision;
2745
2746	device_printf(sc->aac_dev, "Adaptec Raid Controller %d.%d.%d-%d\n",
2747		AAC_DRIVER_VERSION >> 24,
2748		(AAC_DRIVER_VERSION >> 16) & 0xFF,
2749		AAC_DRIVER_VERSION & 0xFF,
2750		AAC_DRIVER_BUILD);
2751
2752	if (bootverbose) {
2753		device_printf(sc->aac_dev, "%s %dMHz, %dMB memory "
2754		    "(%dMB cache, %dMB execution), %s\n",
2755		    aac_describe_code(aac_cpu_variant, info->CpuVariant),
2756		    info->ClockSpeed, info->TotalMem / (1024 * 1024),
2757		    info->BufferMem / (1024 * 1024),
2758		    info->ExecutionMem / (1024 * 1024),
2759		    aac_describe_code(aac_battery_platform,
2760		    info->batteryPlatform));
2761
2762		device_printf(sc->aac_dev,
2763		    "Kernel %d.%d-%d, Build %d, S/N %6X\n",
2764		    info->KernelRevision.external.comp.major,
2765		    info->KernelRevision.external.comp.minor,
2766		    info->KernelRevision.external.comp.dash,
2767		    info->KernelRevision.buildNumber,
2768		    (u_int32_t)(info->SerialNumber & 0xffffff));
2769
2770		device_printf(sc->aac_dev, "Supported Options=%b\n",
2771			      sc->supported_options,
2772			      "\20"
2773			      "\1SNAPSHOT"
2774			      "\2CLUSTERS"
2775			      "\3WCACHE"
2776			      "\4DATA64"
2777			      "\5HOSTTIME"
2778			      "\6RAID50"
2779			      "\7WINDOW4GB"
2780			      "\10SCSIUPGD"
2781			      "\11SOFTERR"
2782			      "\12NORECOND"
2783			      "\13SGMAP64"
2784			      "\14ALARM"
2785			      "\15NONDASD"
2786			      "\16SCSIMGT"
2787			      "\17RAIDSCSI"
2788			      "\21ADPTINFO"
2789			      "\22NEWCOMM"
2790			      "\23ARRAY64BIT"
2791			      "\24HEATSENSOR");
2792	}
2793	aac_release_sync_fib(sc);
2794	mtx_unlock(&sc->aac_io_lock);
2795}
2796
2797/*
2798 * Look up a text description of a numeric error code and return a pointer to
2799 * same.
2800 */
2801static char *
2802aac_describe_code(struct aac_code_lookup *table, u_int32_t code)
2803{
2804	int i;
2805
2806	for (i = 0; table[i].string != NULL; i++)
2807		if (table[i].code == code)
2808			return(table[i].string);
2809	return(table[i + 1].string);
2810}
2811
2812/*
2813 * Management Interface
2814 */
2815
2816static int
2817aac_open(struct cdev *dev, int flags, int fmt, d_thread_t *td)
2818{
2819	struct aac_softc *sc;
2820
2821	debug_called(2);
2822
2823	sc = dev->si_drv1;
2824
2825	/* Check to make sure the device isn't already open */
2826	if (sc->aac_state & AAC_STATE_OPEN) {
2827		return EBUSY;
2828	}
2829	sc->aac_state |= AAC_STATE_OPEN;
2830
2831	return 0;
2832}
2833
2834static int
2835aac_close(struct cdev *dev, int flags, int fmt, d_thread_t *td)
2836{
2837	struct aac_softc *sc;
2838
2839	debug_called(2);
2840
2841	sc = dev->si_drv1;
2842
2843	/* Mark this unit as no longer open  */
2844	sc->aac_state &= ~AAC_STATE_OPEN;
2845
2846	return 0;
2847}
2848
2849static int
2850aac_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, d_thread_t *td)
2851{
2852	union aac_statrequest *as;
2853	struct aac_softc *sc;
2854	int error = 0;
2855	uint32_t cookie;
2856
2857	debug_called(2);
2858
2859	as = (union aac_statrequest *)arg;
2860	sc = dev->si_drv1;
2861
2862	switch (cmd) {
2863	case AACIO_STATS:
2864		switch (as->as_item) {
2865		case AACQ_FREE:
2866		case AACQ_BIO:
2867		case AACQ_READY:
2868		case AACQ_BUSY:
2869			bcopy(&sc->aac_qstat[as->as_item], &as->as_qstat,
2870			      sizeof(struct aac_qstat));
2871			break;
2872		default:
2873			error = ENOENT;
2874			break;
2875		}
2876	break;
2877
2878	case FSACTL_SENDFIB:
2879		arg = *(caddr_t*)arg;
2880	case FSACTL_LNX_SENDFIB:
2881		debug(1, "FSACTL_SENDFIB");
2882		error = aac_ioctl_sendfib(sc, arg);
2883		break;
2884	case FSACTL_AIF_THREAD:
2885	case FSACTL_LNX_AIF_THREAD:
2886		debug(1, "FSACTL_AIF_THREAD");
2887		error = EINVAL;
2888		break;
2889	case FSACTL_OPEN_GET_ADAPTER_FIB:
2890		arg = *(caddr_t*)arg;
2891	case FSACTL_LNX_OPEN_GET_ADAPTER_FIB:
2892		debug(1, "FSACTL_OPEN_GET_ADAPTER_FIB");
2893		/*
2894		 * Pass the caller out an AdapterFibContext.
2895		 *
2896		 * Note that because we only support one opener, we
2897		 * basically ignore this.  Set the caller's context to a magic
2898		 * number just in case.
2899		 *
2900		 * The Linux code hands the driver a pointer into kernel space,
2901		 * and then trusts it when the caller hands it back.  Aiee!
2902		 * Here, we give it the proc pointer of the per-adapter aif
2903		 * thread. It's only used as a sanity check in other calls.
2904		 */
2905		cookie = (uint32_t)(uintptr_t)sc->aifthread;
2906		error = copyout(&cookie, arg, sizeof(cookie));
2907		break;
2908	case FSACTL_GET_NEXT_ADAPTER_FIB:
2909		arg = *(caddr_t*)arg;
2910	case FSACTL_LNX_GET_NEXT_ADAPTER_FIB:
2911		debug(1, "FSACTL_GET_NEXT_ADAPTER_FIB");
2912		error = aac_getnext_aif(sc, arg);
2913		break;
2914	case FSACTL_CLOSE_GET_ADAPTER_FIB:
2915	case FSACTL_LNX_CLOSE_GET_ADAPTER_FIB:
2916		debug(1, "FSACTL_CLOSE_GET_ADAPTER_FIB");
2917		/* don't do anything here */
2918		break;
2919	case FSACTL_MINIPORT_REV_CHECK:
2920		arg = *(caddr_t*)arg;
2921	case FSACTL_LNX_MINIPORT_REV_CHECK:
2922		debug(1, "FSACTL_MINIPORT_REV_CHECK");
2923		error = aac_rev_check(sc, arg);
2924		break;
2925	case FSACTL_QUERY_DISK:
2926		arg = *(caddr_t*)arg;
2927	case FSACTL_LNX_QUERY_DISK:
2928		debug(1, "FSACTL_QUERY_DISK");
2929		error = aac_query_disk(sc, arg);
2930		break;
2931	case FSACTL_DELETE_DISK:
2932	case FSACTL_LNX_DELETE_DISK:
2933		/*
2934		 * We don't trust the underland to tell us when to delete a
2935		 * container, rather we rely on an AIF coming from the
2936		 * controller
2937		 */
2938		error = 0;
2939		break;
2940	case FSACTL_GET_PCI_INFO:
2941		arg = *(caddr_t*)arg;
2942	case FSACTL_LNX_GET_PCI_INFO:
2943		debug(1, "FSACTL_GET_PCI_INFO");
2944		error = aac_get_pci_info(sc, arg);
2945		break;
2946	default:
2947		debug(1, "unsupported cmd 0x%lx\n", cmd);
2948		error = EINVAL;
2949		break;
2950	}
2951	return(error);
2952}
2953
2954static int
2955aac_poll(struct cdev *dev, int poll_events, d_thread_t *td)
2956{
2957	struct aac_softc *sc;
2958	int revents;
2959
2960	sc = dev->si_drv1;
2961	revents = 0;
2962
2963	mtx_lock(&sc->aac_aifq_lock);
2964	if ((poll_events & (POLLRDNORM | POLLIN)) != 0) {
2965		if (sc->aac_aifq_tail != sc->aac_aifq_head)
2966			revents |= poll_events & (POLLIN | POLLRDNORM);
2967	}
2968	mtx_unlock(&sc->aac_aifq_lock);
2969
2970	if (revents == 0) {
2971		if (poll_events & (POLLIN | POLLRDNORM))
2972			selrecord(td, &sc->rcv_select);
2973	}
2974
2975	return (revents);
2976}
2977
2978static void
2979aac_ioctl_event(struct aac_softc *sc, struct aac_event *event, void *arg)
2980{
2981
2982	switch (event->ev_type) {
2983	case AAC_EVENT_CMFREE:
2984		mtx_lock(&sc->aac_io_lock);
2985		if (aac_alloc_command(sc, (struct aac_command **)arg)) {
2986			aac_add_event(sc, event);
2987			mtx_unlock(&sc->aac_io_lock);
2988			return;
2989		}
2990		free(event, M_AACBUF);
2991		wakeup(arg);
2992		mtx_unlock(&sc->aac_io_lock);
2993		break;
2994	default:
2995		break;
2996	}
2997}
2998
2999/*
3000 * Send a FIB supplied from userspace
3001 */
3002static int
3003aac_ioctl_sendfib(struct aac_softc *sc, caddr_t ufib)
3004{
3005	struct aac_command *cm;
3006	int size, error;
3007
3008	debug_called(2);
3009
3010	cm = NULL;
3011
3012	/*
3013	 * Get a command
3014	 */
3015	mtx_lock(&sc->aac_io_lock);
3016	if (aac_alloc_command(sc, &cm)) {
3017		struct aac_event *event;
3018
3019		event = malloc(sizeof(struct aac_event), M_AACBUF,
3020		    M_NOWAIT | M_ZERO);
3021		if (event == NULL) {
3022			error = EBUSY;
3023			goto out;
3024		}
3025		event->ev_type = AAC_EVENT_CMFREE;
3026		event->ev_callback = aac_ioctl_event;
3027		event->ev_arg = &cm;
3028		aac_add_event(sc, event);
3029		msleep(&cm, &sc->aac_io_lock, 0, "sendfib", 0);
3030	}
3031	mtx_unlock(&sc->aac_io_lock);
3032
3033	/*
3034	 * Fetch the FIB header, then re-copy to get data as well.
3035	 */
3036	if ((error = copyin(ufib, cm->cm_fib,
3037			    sizeof(struct aac_fib_header))) != 0)
3038		goto out;
3039	size = cm->cm_fib->Header.Size + sizeof(struct aac_fib_header);
3040	if (size > sizeof(struct aac_fib)) {
3041		device_printf(sc->aac_dev, "incoming FIB oversized (%d > %zd)\n",
3042			      size, sizeof(struct aac_fib));
3043		size = sizeof(struct aac_fib);
3044	}
3045	if ((error = copyin(ufib, cm->cm_fib, size)) != 0)
3046		goto out;
3047	cm->cm_fib->Header.Size = size;
3048	cm->cm_timestamp = time_uptime;
3049
3050	/*
3051	 * Pass the FIB to the controller, wait for it to complete.
3052	 */
3053	mtx_lock(&sc->aac_io_lock);
3054	if ((error = aac_wait_command(cm)) != 0) {
3055		device_printf(sc->aac_dev,
3056			      "aac_wait_command return %d\n", error);
3057		goto out;
3058	}
3059	mtx_unlock(&sc->aac_io_lock);
3060
3061	/*
3062	 * Copy the FIB and data back out to the caller.
3063	 */
3064	size = cm->cm_fib->Header.Size;
3065	if (size > sizeof(struct aac_fib)) {
3066		device_printf(sc->aac_dev, "outbound FIB oversized (%d > %zd)\n",
3067			      size, sizeof(struct aac_fib));
3068		size = sizeof(struct aac_fib);
3069	}
3070	error = copyout(cm->cm_fib, ufib, size);
3071	mtx_lock(&sc->aac_io_lock);
3072
3073out:
3074	if (cm != NULL) {
3075		aac_release_command(cm);
3076	}
3077
3078	mtx_unlock(&sc->aac_io_lock);
3079	return(error);
3080}
3081
3082/*
3083 * Handle an AIF sent to us by the controller; queue it for later reference.
3084 * If the queue fills up, then drop the older entries.
3085 */
3086static void
3087aac_handle_aif(struct aac_softc *sc, struct aac_fib *fib)
3088{
3089	struct aac_aif_command *aif;
3090	struct aac_container *co, *co_next;
3091	struct aac_mntinfo *mi;
3092	struct aac_mntinforesp *mir = NULL;
3093	u_int16_t rsize;
3094	int next, found;
3095	int count = 0, added = 0, i = 0;
3096
3097	debug_called(2);
3098
3099	aif = (struct aac_aif_command*)&fib->data[0];
3100	aac_print_aif(sc, aif);
3101
3102	/* Is it an event that we should care about? */
3103	switch (aif->command) {
3104	case AifCmdEventNotify:
3105		switch (aif->data.EN.type) {
3106		case AifEnAddContainer:
3107		case AifEnDeleteContainer:
3108			/*
3109			 * A container was added or deleted, but the message
3110			 * doesn't tell us anything else!  Re-enumerate the
3111			 * containers and sort things out.
3112			 */
3113			aac_alloc_sync_fib(sc, &fib);
3114			mi = (struct aac_mntinfo *)&fib->data[0];
3115			do {
3116				/*
3117				 * Ask the controller for its containers one at
3118				 * a time.
3119				 * XXX What if the controller's list changes
3120				 * midway through this enumaration?
3121				 * XXX This should be done async.
3122				 */
3123				bzero(mi, sizeof(struct aac_mntinfo));
3124				mi->Command = VM_NameServe;
3125				mi->MntType = FT_FILESYS;
3126				mi->MntCount = i;
3127				rsize = sizeof(mir);
3128				if (aac_sync_fib(sc, ContainerCommand, 0, fib,
3129						 sizeof(struct aac_mntinfo))) {
3130					printf("Error probing container %d\n",
3131					      i);
3132					continue;
3133				}
3134				mir = (struct aac_mntinforesp *)&fib->data[0];
3135				/* XXX Need to check if count changed */
3136				count = mir->MntRespCount;
3137				/*
3138				 * Check the container against our list.
3139				 * co->co_found was already set to 0 in a
3140				 * previous run.
3141				 */
3142				if ((mir->Status == ST_OK) &&
3143				    (mir->MntTable[0].VolType != CT_NONE)) {
3144					found = 0;
3145					TAILQ_FOREACH(co,
3146						      &sc->aac_container_tqh,
3147						      co_link) {
3148						if (co->co_mntobj.ObjectId ==
3149						    mir->MntTable[0].ObjectId) {
3150							co->co_found = 1;
3151							found = 1;
3152							break;
3153						}
3154					}
3155					/*
3156					 * If the container matched, continue
3157					 * in the list.
3158					 */
3159					if (found) {
3160						i++;
3161						continue;
3162					}
3163
3164					/*
3165					 * This is a new container.  Do all the
3166					 * appropriate things to set it up.
3167					 */
3168					aac_add_container(sc, mir, 1);
3169					added = 1;
3170				}
3171				i++;
3172			} while ((i < count) && (i < AAC_MAX_CONTAINERS));
3173			aac_release_sync_fib(sc);
3174
3175			/*
3176			 * Go through our list of containers and see which ones
3177			 * were not marked 'found'.  Since the controller didn't
3178			 * list them they must have been deleted.  Do the
3179			 * appropriate steps to destroy the device.  Also reset
3180			 * the co->co_found field.
3181			 */
3182			co = TAILQ_FIRST(&sc->aac_container_tqh);
3183			while (co != NULL) {
3184				if (co->co_found == 0) {
3185					mtx_unlock(&sc->aac_io_lock);
3186					mtx_lock(&Giant);
3187					device_delete_child(sc->aac_dev,
3188							    co->co_disk);
3189					mtx_unlock(&Giant);
3190					mtx_lock(&sc->aac_io_lock);
3191					co_next = TAILQ_NEXT(co, co_link);
3192					mtx_lock(&sc->aac_container_lock);
3193					TAILQ_REMOVE(&sc->aac_container_tqh, co,
3194						     co_link);
3195					mtx_unlock(&sc->aac_container_lock);
3196					free(co, M_AACBUF);
3197					co = co_next;
3198				} else {
3199					co->co_found = 0;
3200					co = TAILQ_NEXT(co, co_link);
3201				}
3202			}
3203
3204			/* Attach the newly created containers */
3205			if (added) {
3206				mtx_unlock(&sc->aac_io_lock);
3207				mtx_lock(&Giant);
3208				bus_generic_attach(sc->aac_dev);
3209				mtx_unlock(&Giant);
3210				mtx_lock(&sc->aac_io_lock);
3211			}
3212
3213			break;
3214
3215		default:
3216			break;
3217		}
3218
3219	default:
3220		break;
3221	}
3222
3223	/* Copy the AIF data to the AIF queue for ioctl retrieval */
3224	mtx_lock(&sc->aac_aifq_lock);
3225	next = (sc->aac_aifq_head + 1) % AAC_AIFQ_LENGTH;
3226	if (next != sc->aac_aifq_tail) {
3227		bcopy(aif, &sc->aac_aifq[next], sizeof(struct aac_aif_command));
3228		sc->aac_aifq_head = next;
3229
3230		/* On the off chance that someone is sleeping for an aif... */
3231		if (sc->aac_state & AAC_STATE_AIF_SLEEPER)
3232			wakeup(sc->aac_aifq);
3233		/* Wakeup any poll()ers */
3234		selwakeuppri(&sc->rcv_select, PRIBIO);
3235	}
3236	mtx_unlock(&sc->aac_aifq_lock);
3237
3238	return;
3239}
3240
3241/*
3242 * Return the Revision of the driver to userspace and check to see if the
3243 * userspace app is possibly compatible.  This is extremely bogus since
3244 * our driver doesn't follow Adaptec's versioning system.  Cheat by just
3245 * returning what the card reported.
3246 */
3247static int
3248aac_rev_check(struct aac_softc *sc, caddr_t udata)
3249{
3250	struct aac_rev_check rev_check;
3251	struct aac_rev_check_resp rev_check_resp;
3252	int error = 0;
3253
3254	debug_called(2);
3255
3256	/*
3257	 * Copyin the revision struct from userspace
3258	 */
3259	if ((error = copyin(udata, (caddr_t)&rev_check,
3260			sizeof(struct aac_rev_check))) != 0) {
3261		return error;
3262	}
3263
3264	debug(2, "Userland revision= %d\n",
3265	      rev_check.callingRevision.buildNumber);
3266
3267	/*
3268	 * Doctor up the response struct.
3269	 */
3270	rev_check_resp.possiblyCompatible = 1;
3271	rev_check_resp.adapterSWRevision.external.ul =
3272	    sc->aac_revision.external.ul;
3273	rev_check_resp.adapterSWRevision.buildNumber =
3274	    sc->aac_revision.buildNumber;
3275
3276	return(copyout((caddr_t)&rev_check_resp, udata,
3277			sizeof(struct aac_rev_check_resp)));
3278}
3279
3280/*
3281 * Pass the caller the next AIF in their queue
3282 */
3283static int
3284aac_getnext_aif(struct aac_softc *sc, caddr_t arg)
3285{
3286	struct get_adapter_fib_ioctl agf;
3287	int error;
3288
3289	debug_called(2);
3290
3291	if ((error = copyin(arg, &agf, sizeof(agf))) == 0) {
3292
3293		/*
3294		 * Check the magic number that we gave the caller.
3295		 */
3296		if (agf.AdapterFibContext != (int)(uintptr_t)sc->aifthread) {
3297			error = EFAULT;
3298		} else {
3299			error = aac_return_aif(sc, agf.AifFib);
3300			if ((error == EAGAIN) && (agf.Wait)) {
3301				sc->aac_state |= AAC_STATE_AIF_SLEEPER;
3302				while (error == EAGAIN) {
3303					error = tsleep(sc->aac_aifq, PRIBIO |
3304						       PCATCH, "aacaif", 0);
3305					if (error == 0)
3306						error = aac_return_aif(sc,
3307						    agf.AifFib);
3308				}
3309				sc->aac_state &= ~AAC_STATE_AIF_SLEEPER;
3310			}
3311		}
3312	}
3313	return(error);
3314}
3315
3316/*
3317 * Hand the next AIF off the top of the queue out to userspace.
3318 */
3319static int
3320aac_return_aif(struct aac_softc *sc, caddr_t uptr)
3321{
3322	int next, error;
3323
3324	debug_called(2);
3325
3326	mtx_lock(&sc->aac_aifq_lock);
3327	if (sc->aac_aifq_tail == sc->aac_aifq_head) {
3328		mtx_unlock(&sc->aac_aifq_lock);
3329		return (EAGAIN);
3330	}
3331
3332	next = (sc->aac_aifq_tail + 1) % AAC_AIFQ_LENGTH;
3333	error = copyout(&sc->aac_aifq[next], uptr,
3334			sizeof(struct aac_aif_command));
3335	if (error)
3336		device_printf(sc->aac_dev,
3337		    "aac_return_aif: copyout returned %d\n", error);
3338	else
3339		sc->aac_aifq_tail = next;
3340
3341	mtx_unlock(&sc->aac_aifq_lock);
3342	return(error);
3343}
3344
3345static int
3346aac_get_pci_info(struct aac_softc *sc, caddr_t uptr)
3347{
3348	struct aac_pci_info {
3349		u_int32_t bus;
3350		u_int32_t slot;
3351	} pciinf;
3352	int error;
3353
3354	debug_called(2);
3355
3356	pciinf.bus = pci_get_bus(sc->aac_dev);
3357	pciinf.slot = pci_get_slot(sc->aac_dev);
3358
3359	error = copyout((caddr_t)&pciinf, uptr,
3360			sizeof(struct aac_pci_info));
3361
3362	return (error);
3363}
3364
3365/*
3366 * Give the userland some information about the container.  The AAC arch
3367 * expects the driver to be a SCSI passthrough type driver, so it expects
3368 * the containers to have b:t:l numbers.  Fake it.
3369 */
3370static int
3371aac_query_disk(struct aac_softc *sc, caddr_t uptr)
3372{
3373	struct aac_query_disk query_disk;
3374	struct aac_container *co;
3375	struct aac_disk	*disk;
3376	int error, id;
3377
3378	debug_called(2);
3379
3380	disk = NULL;
3381
3382	error = copyin(uptr, (caddr_t)&query_disk,
3383		       sizeof(struct aac_query_disk));
3384	if (error)
3385		return (error);
3386
3387	id = query_disk.ContainerNumber;
3388	if (id == -1)
3389		return (EINVAL);
3390
3391	mtx_lock(&sc->aac_container_lock);
3392	TAILQ_FOREACH(co, &sc->aac_container_tqh, co_link) {
3393		if (co->co_mntobj.ObjectId == id)
3394			break;
3395		}
3396
3397	if (co == NULL) {
3398			query_disk.Valid = 0;
3399			query_disk.Locked = 0;
3400			query_disk.Deleted = 1;		/* XXX is this right? */
3401	} else {
3402		disk = device_get_softc(co->co_disk);
3403		query_disk.Valid = 1;
3404		query_disk.Locked =
3405		    (disk->ad_flags & AAC_DISK_OPEN) ? 1 : 0;
3406		query_disk.Deleted = 0;
3407		query_disk.Bus = device_get_unit(sc->aac_dev);
3408		query_disk.Target = disk->unit;
3409		query_disk.Lun = 0;
3410		query_disk.UnMapped = 0;
3411		sprintf(&query_disk.diskDeviceName[0], "%s%d",
3412		        disk->ad_disk->d_name, disk->ad_disk->d_unit);
3413	}
3414	mtx_unlock(&sc->aac_container_lock);
3415
3416	error = copyout((caddr_t)&query_disk, uptr,
3417			sizeof(struct aac_query_disk));
3418
3419	return (error);
3420}
3421
3422static void
3423aac_get_bus_info(struct aac_softc *sc)
3424{
3425	struct aac_fib *fib;
3426	struct aac_ctcfg *c_cmd;
3427	struct aac_ctcfg_resp *c_resp;
3428	struct aac_vmioctl *vmi;
3429	struct aac_vmi_businf_resp *vmi_resp;
3430	struct aac_getbusinf businfo;
3431	struct aac_sim *caminf;
3432	device_t child;
3433	int i, found, error;
3434
3435	mtx_lock(&sc->aac_io_lock);
3436	aac_alloc_sync_fib(sc, &fib);
3437	c_cmd = (struct aac_ctcfg *)&fib->data[0];
3438	bzero(c_cmd, sizeof(struct aac_ctcfg));
3439
3440	c_cmd->Command = VM_ContainerConfig;
3441	c_cmd->cmd = CT_GET_SCSI_METHOD;
3442	c_cmd->param = 0;
3443
3444	error = aac_sync_fib(sc, ContainerCommand, 0, fib,
3445	    sizeof(struct aac_ctcfg));
3446	if (error) {
3447		device_printf(sc->aac_dev, "Error %d sending "
3448		    "VM_ContainerConfig command\n", error);
3449		aac_release_sync_fib(sc);
3450		mtx_unlock(&sc->aac_io_lock);
3451		return;
3452	}
3453
3454	c_resp = (struct aac_ctcfg_resp *)&fib->data[0];
3455	if (c_resp->Status != ST_OK) {
3456		device_printf(sc->aac_dev, "VM_ContainerConfig returned 0x%x\n",
3457		    c_resp->Status);
3458		aac_release_sync_fib(sc);
3459		mtx_unlock(&sc->aac_io_lock);
3460		return;
3461	}
3462
3463	sc->scsi_method_id = c_resp->param;
3464
3465	vmi = (struct aac_vmioctl *)&fib->data[0];
3466	bzero(vmi, sizeof(struct aac_vmioctl));
3467
3468	vmi->Command = VM_Ioctl;
3469	vmi->ObjType = FT_DRIVE;
3470	vmi->MethId = sc->scsi_method_id;
3471	vmi->ObjId = 0;
3472	vmi->IoctlCmd = GetBusInfo;
3473
3474	error = aac_sync_fib(sc, ContainerCommand, 0, fib,
3475	    sizeof(struct aac_vmioctl));
3476	if (error) {
3477		device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n",
3478		    error);
3479		aac_release_sync_fib(sc);
3480		mtx_unlock(&sc->aac_io_lock);
3481		return;
3482	}
3483
3484	vmi_resp = (struct aac_vmi_businf_resp *)&fib->data[0];
3485	if (vmi_resp->Status != ST_OK) {
3486		device_printf(sc->aac_dev, "VM_Ioctl returned %d\n",
3487		    vmi_resp->Status);
3488		aac_release_sync_fib(sc);
3489		mtx_unlock(&sc->aac_io_lock);
3490		return;
3491	}
3492
3493	bcopy(&vmi_resp->BusInf, &businfo, sizeof(struct aac_getbusinf));
3494	aac_release_sync_fib(sc);
3495	mtx_unlock(&sc->aac_io_lock);
3496
3497	found = 0;
3498	for (i = 0; i < businfo.BusCount; i++) {
3499		if (businfo.BusValid[i] != AAC_BUS_VALID)
3500			continue;
3501
3502		caminf = (struct aac_sim *)malloc( sizeof(struct aac_sim),
3503		    M_AACBUF, M_NOWAIT | M_ZERO);
3504		if (caminf == NULL) {
3505			device_printf(sc->aac_dev,
3506			    "No memory to add passthrough bus %d\n", i);
3507			break;
3508		};
3509
3510		child = device_add_child(sc->aac_dev, "aacp", -1);
3511		if (child == NULL) {
3512			device_printf(sc->aac_dev,
3513			    "device_add_child failed for passthrough bus %d\n",
3514			    i);
3515			free(caminf, M_AACBUF);
3516			break;
3517		}
3518
3519		caminf->TargetsPerBus = businfo.TargetsPerBus;
3520		caminf->BusNumber = i;
3521		caminf->InitiatorBusId = businfo.InitiatorBusId[i];
3522		caminf->aac_sc = sc;
3523		caminf->sim_dev = child;
3524
3525		device_set_ivars(child, caminf);
3526		device_set_desc(child, "SCSI Passthrough Bus");
3527		TAILQ_INSERT_TAIL(&sc->aac_sim_tqh, caminf, sim_link);
3528
3529		found = 1;
3530	}
3531
3532	if (found)
3533		bus_generic_attach(sc->aac_dev);
3534
3535	return;
3536}
3537