xref: /titanic_52/usr/src/uts/sun4u/starfire/io/idn.c (revision d14abf155341d55053c76eeec58b787a456b753b)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #include <sys/types.h>
27 #include <sys/sysmacros.h>
28 #include <sys/open.h>
29 #include <sys/param.h>
30 #include <sys/machparam.h>
31 #include <sys/systm.h>
32 #include <sys/signal.h>
33 #include <sys/cred.h>
34 #include <sys/user.h>
35 #include <sys/proc.h>
36 #include <sys/vnode.h>
37 #include <sys/uio.h>
38 #include <sys/buf.h>
39 #include <sys/file.h>
40 #include <sys/kmem.h>
41 #include <sys/stat.h>
42 #include <sys/stream.h>
43 #include <sys/stropts.h>
44 #include <sys/strsubr.h>
45 #include <sys/strsun.h>
46 #include <inet/common.h>
47 #include <inet/mi.h>
48 #include <inet/nd.h>
49 #include <sys/poll.h>
50 #include <sys/utsname.h>
51 #include <sys/debug.h>
52 #include <sys/conf.h>
53 #include <sys/ddi.h>
54 #include <sys/sunddi.h>
55 #include <sys/errno.h>
56 #include <sys/modctl.h>
57 #include <sys/machsystm.h>
58 #include <sys/promif.h>
59 #include <sys/prom_plat.h>
60 #include <sys/obpdefs.h>
61 #include <vm/seg_kmem.h>
62 #include <vm/seg_kp.h>
63 #include <sys/kstat.h>
64 #include <sys/membar.h>
65 #include <sys/ivintr.h>
66 #include <sys/vm_machparam.h>
67 #include <sys/x_call.h>
68 #include <sys/cpuvar.h>
69 #include <sys/archsystm.h>
70 #include <sys/dmv.h>
71 
72 #include <sys/idn.h>
73 #include <sys/idn_xf.h>
74 #include <sys/cpu_sgnblk_defs.h>
75 #include <sys/cpu_sgn.h>
76 
77 struct idn_gkstat	sg_kstat;
78 
79 #define	MBXTBL_PART_REPORT	((caddr_t)1)
80 #define	MBXTBL_FULL_REPORT	((caddr_t)2)
81 
82 idn_domain_t	idn_domain[MAX_DOMAINS];
83 idn_global_t	idn;
84 int		idn_debug;
85 int		idn_snoop;
86 int		idn_history;
87 
88 typedef enum {
89 	IDN_GPROPS_OKAY,
90 	IDN_GPROPS_UNCHECKED,
91 	IDN_GPROPS_ERROR
92 } idn_gprops_t;
93 
94 struct idn_history	idnhlog;
95 
96 /*
97  * IDN "tunables".
98  */
99 int		idn_smr_size;
100 int		idn_nwr_size;
101 int		idn_lowat;
102 int		idn_hiwat;
103 int		idn_protocol_nservers;
104 int		idn_awolmsg_interval;
105 int		idn_smr_bufsize;
106 int		idn_slab_bufcount;
107 int		idn_slab_prealloc;
108 int		idn_slab_maxperdomain;
109 int		idn_slab_mintotal;
110 int		idn_window_max;
111 int		idn_window_incr;
112 int		idn_window_emax;
113 int		idn_reclaim_min;
114 int		idn_reclaim_max;
115 int		idn_mbox_per_net;
116 int		idn_max_nets;
117 
118 int		idn_netsvr_spin_count;
119 int		idn_netsvr_wait_min;
120 int		idn_netsvr_wait_max;
121 int		idn_netsvr_wait_shift;
122 
123 int		idn_checksum;
124 
125 int		idn_msgwait_nego;
126 int		idn_msgwait_cfg;
127 int		idn_msgwait_con;
128 int		idn_msgwait_fin;
129 int		idn_msgwait_cmd;
130 int		idn_msgwait_data;
131 
132 int		idn_retryfreq_nego;
133 int		idn_retryfreq_con;
134 int		idn_retryfreq_fin;
135 
136 int		idn_window_emax;	/* calculated */
137 int		idn_slab_maxperdomain;	/* calculated */
138 
139 /*
140  * DMV interrupt support.
141  */
142 int		idn_pil;
143 int		idn_dmv_pending_max;
144 idn_dmv_msg_t	*idn_iv_queue[NCPU];
145 int		idn_intr_index[NCPU];	/* idn_handler ONLY */
146 static idn_dmv_data_t	*idn_dmv_data;
147 
148 int		idn_sigbpil;
149 
150 idnparam_t	idn_param_arr[] = {
151 { 0,		1,		0,		/* 0 */ "idn_modunloadable" },
152 };
153 
154 /*
155  * Parameters that are only accessible in a DEBUG driver.
156  */
157 static char *idn_param_debug_only[] = {
158 #if 0
159 	"idn_checksum",
160 #endif /* 0 */
161 	0
162 };
163 
164 /*
165  * Parameters that are READ-ONLY.
166  */
167 static char *idn_param_read_only[] = {
168 #if 0
169 	"idn_window_emax",
170 	"idn_slab_maxperdomain",
171 #endif /* 0 */
172 	0
173 };
174 
175 static struct idn_global_props {
176 	int		p_min, p_max, p_def;
177 	char		*p_string;
178 	int		*p_var;
179 } idn_global_props[] = {
180 { 0,	0,	0,	"idn_debug",		&idn_debug		},
181 { 0,	1,	0,	"idn_history",		&idn_history		},
182 { 0,	IDN_SMR_MAXSIZE,
183 		0,	"idn_smr_size",		&idn_smr_size		},
184 { 0,	IDN_SMR_MAXSIZE,
185 		0,	"idn_nwr_size",		&idn_nwr_size		},
186 { 1,	512*1024,
187 		1,	"idn_lowat",		&idn_lowat		},
188 { 1*1024,
189 	1*1024*1024,
190 		256*1024,
191 			"idn_hiwat",		&idn_hiwat		},
192 { IDN_SMR_BUFSIZE_MIN,
193 	IDN_SMR_BUFSIZE_MAX,
194 		IDN_SMR_BUFSIZE_DEF,
195 			"idn_smr_bufsize",	&idn_smr_bufsize	},
196 { 4,	1024,	32,	"idn_slab_bufcount",	&idn_slab_bufcount	},
197 { 0,	10,	0,	"idn_slab_prealloc",	&idn_slab_prealloc	},
198 { 2,	MAX_DOMAINS,
199 		8,	"idn_slab_mintotal",	&idn_slab_mintotal	},
200 { 8,	256,	64,	"idn_window_max",	&idn_window_max		},
201 { 0,	32,	8,	"idn_window_incr",	&idn_window_incr	},
202 { 1,	128,	5,	"idn_reclaim_min",	&idn_reclaim_min	},
203 { 0,	128,	0,	"idn_reclaim_max",	&idn_reclaim_max	},
204 { 1,	IDN_MAXMAX_NETS,
205 		8,	"idn_max_nets",		&idn_max_nets		},
206 { 31,	511,	127,	"idn_mbox_per_net",	&idn_mbox_per_net	},
207 { 0,	1,	1,	"idn_checksum",		&idn_checksum		},
208 { 0,	10000,	500,	"idn_netsvr_spin_count",
209 						&idn_netsvr_spin_count	},
210 { 0,	30*100,	40,	"idn_netsvr_wait_min",	&idn_netsvr_wait_min	},
211 { 0,	60*100,	16*100,	"idn_netsvr_wait_max",	&idn_netsvr_wait_max	},
212 { 1,	5,	1,	"idn_netsvr_wait_shift",
213 						&idn_netsvr_wait_shift	},
214 { 1,	MAX_DOMAINS,
215 		IDN_PROTOCOL_NSERVERS,
216 			"idn_protocol_nservers",
217 						&idn_protocol_nservers	},
218 { 0,	3600,	IDN_AWOLMSG_INTERVAL,
219 			"idn_awolmsg_interval",	&idn_awolmsg_interval	},
220 { 10,	300,	IDN_MSGWAIT_NEGO,
221 			"idn_msgwait_nego",	&idn_msgwait_nego	},
222 { 10,	300,	IDN_MSGWAIT_CFG,
223 			"idn_msgwait_cfg",	&idn_msgwait_cfg	},
224 { 10,	300,	IDN_MSGWAIT_CON,
225 			"idn_msgwait_con",	&idn_msgwait_con	},
226 { 10,	300,	IDN_MSGWAIT_FIN,
227 			"idn_msgwait_fin",	&idn_msgwait_fin	},
228 { 10,	300,	IDN_MSGWAIT_CMD,
229 			"idn_msgwait_cmd",	&idn_msgwait_cmd	},
230 { 10,	300,	IDN_MSGWAIT_DATA,
231 			"idn_msgwait_data",	&idn_msgwait_data	},
232 { 1,	60,	IDN_RETRYFREQ_NEGO,
233 			"idn_retryfreq_nego",	&idn_retryfreq_nego	},
234 { 1,	60,	IDN_RETRYFREQ_CON,
235 			"idn_retryfreq_con",	&idn_retryfreq_con	},
236 { 1,	60,	IDN_RETRYFREQ_FIN,
237 			"idn_retryfreq_fin",	&idn_retryfreq_fin	},
238 { 1,	9,	IDN_PIL,
239 			"idn_pil",		&idn_pil		},
240 { 1,	9,	IDN_SIGBPIL,
241 			"idn_sigbpil",		&idn_sigbpil		},
242 { 8,	512,	IDN_DMV_PENDING_MAX,
243 			"idn_dmv_pending_max",	&idn_dmv_pending_max	},
244 { 0,	0,	0,	NULL,			NULL			}
245 };
246 
247 struct idn	*idn_i2s_table[IDN_MAXMAX_NETS << 1];
248 clock_t		idn_msg_waittime[IDN_NUM_MSGTYPES];
249 clock_t		idn_msg_retrytime[(int)IDN_NUM_RETRYTYPES];
250 
251 static caddr_t	idn_ndlist;	/* head of 'named dispatch' var list */
252 
253 static int	idnattach(dev_info_t *, ddi_attach_cmd_t);
254 static int	idndetach(dev_info_t *, ddi_detach_cmd_t);
255 static int	idnopen(register queue_t *, dev_t *, int, int, cred_t *);
256 static int	idnclose(queue_t *, int, cred_t *);
257 static int	idnwput(queue_t *, mblk_t *);
258 static int	idnwsrv(queue_t *);
259 static int	idnrput(queue_t *, mblk_t *);
260 static void	idnioctl(queue_t *, mblk_t *);
261 static idn_gprops_t	idn_check_conf(dev_info_t *dip, processorid_t *cpuid);
262 static int	idn_size_check();
263 static void	idn_xmit_monitor_init();
264 static void	idn_xmit_monitor_deinit();
265 static void	idn_init_msg_waittime();
266 static void	idn_init_msg_retrytime();
267 static void	idn_sigb_setup(cpu_sgnblk_t *sigbp, void *arg);
268 static int	idn_init(dev_info_t *dip);
269 static int	idn_deinit();
270 static void	idn_sigbhandler_create();
271 static void	idn_sigbhandler_kill();
272 static uint_t	idn_sigbhandler_wakeup(caddr_t arg1, caddr_t arg2);
273 static void	idn_sigbhandler_thread(struct sigbintr **sbpp);
274 static void	idn_sigbhandler(processorid_t cpuid, cpu_sgnblk_t *sgnblkp);
275 static int	idn_info(idnsb_info_t *sfp);
276 static int	idn_init_smr();
277 static void	idn_deinit_smr();
278 static int	idn_prom_getsmr(uint_t *smrsz, uint64_t *paddrp,
279 				uint64_t *sizep);
280 static int	idn_init_handler();
281 static void	idn_deinit_handler();
282 static uint_t	idn_handler(caddr_t unused, caddr_t unused2);
283 /*
284  * ioctl services
285  */
286 static int	idnioc_link(idnop_t *idnop);
287 static int	idnioc_unlink(idnop_t *idnop);
288 static int	idn_rw_mem(idnop_t *idnop);
289 static int	idn_send_ping(idnop_t *idnop);
290 
291 static void 	idn_domains_init(struct hwconfig *local_hw);
292 static void 	idn_domains_deinit();
293 static void	idn_retrytask_init();
294 static void	idn_retrytask_deinit();
295 static void	idn_gkstat_init();
296 static void	idn_gkstat_deinit();
297 static int	idn_gkstat_update();
298 static void	idn_timercache_init();
299 static void	idn_timercache_deinit();
300 static void	idn_dopers_init();
301 static void	idn_dopers_deinit();
302 
303 static void	idn_param_cleanup();
304 static int	idn_param_get(queue_t *q, mblk_t *mp, caddr_t cp, cred_t *cr);
305 static int	idn_param_set(queue_t *q, mblk_t *mp, char *value, caddr_t cp,
306 					cred_t *cr);
307 static int	idn_param_register(register idnparam_t *idnpa, int count);
308 static int	idn_slabpool_report(queue_t *wq, mblk_t *mp, caddr_t cp,
309 					cred_t *cr);
310 static int	idn_buffer_report(queue_t *wq, mblk_t *mp, caddr_t cp,
311 					cred_t *cr);
312 static int	idn_mboxtbl_report(queue_t *wq, mblk_t *mp, caddr_t cp,
313 					cred_t *cr);
314 static int	idn_mainmbox_report(queue_t *wq, mblk_t *mp, caddr_t cp,
315 					cred_t *cr);
316 static void	idn_mainmbox_domain_report(queue_t *wq, mblk_t *mp, int domid,
317 					idn_mainmbox_t *mmp, char *mbxtype);
318 static int	idn_global_report(queue_t *wq, mblk_t *mp, caddr_t cp,
319 					cred_t *cr);
320 static int	idn_domain_report(queue_t *wq, mblk_t *mp, caddr_t cp,
321 					cred_t *cr);
322 static int	idn_get_net_binding(queue_t *wq, mblk_t *mp, caddr_t cp,
323 					cred_t *cr);
324 static int	idn_set_net_binding(queue_t *wq, mblk_t *mp, char *value,
325 					caddr_t cp, cred_t *cr);
326 
327 /*
328  * String definitions used for DEBUG and non-DEBUG.
329  */
330 const char	*idnm_str[] = {
331 /*  0 */	"null",
332 /*  1 */	"nego",
333 /*  2 */	"con",
334 /*  3 */	"cfg",
335 /*  4 */	"fin",
336 /*  5 */	"cmd",
337 /*  6 */	"data",
338 };
339 
340 const char	*idnds_str[] = {
341 /*  0 */	"CLOSED",
342 /*  1 */	"NEGO_PEND",
343 /*  2 */	"NEGO_SENT",
344 /*  3 */	"NEGO_RCVD",
345 /*  4 */	"CONFIG",
346 /*  5 */	"CON_PEND",
347 /*  6 */	"CON_SENT",
348 /*  7 */	"CON_RCVD",
349 /*  8 */	"CON_READY",
350 /*  9 */	"CONNECTED",
351 /* 10 */	"FIN_PEND",
352 /* 11 */	"FIN_SENT",
353 /* 12 */	"FIN_RCVD",
354 /* 13 */	"DMAP"
355 };
356 
357 const char	*idnxs_str[] = {
358 /* 0 */		"PEND",
359 /* 1 */		"SENT",
360 /* 2 */		"RCVD",
361 /* 3 */		"FINAL",
362 /* 4 */		"NIL"
363 };
364 
365 const char	*idngs_str[] = {
366 /*  0 */	"OFFLINE",
367 /*  1 */	"CONNECT",
368 /*  2 */	"ONLINE",
369 /*  3 */	"DISCONNECT",
370 /*  4 */	"RECONFIG",
371 /*  5 */	"unknown",
372 /*  6 */	"unknown",
373 /*  7 */	"unknown",
374 /*  8 */	"unknown",
375 /*  9 */	"unknown",
376 /* 10 */	"IGNORE"
377 };
378 
379 const char	*idncmd_str[] = {
380 /*  0 */	"unknown",
381 /*  1 */	"SLABALLOC",
382 /*  2 */	"SLABFREE",
383 /*  3 */	"SLABREAP",
384 /*  4 */	"NODENAME"
385 };
386 
387 const char	*idncon_str[] = {
388 /*  0 */	"OFF",
389 /*  1 */	"NORMAL",
390 /*  2 */	"QUERY"
391 };
392 
393 const char	*idnfin_str[] = {
394 /*  0 */	"OFF",
395 /*  1 */	"NORMAL",
396 /*  2 */	"FORCE_SOFT",
397 /*  3 */	"FORCE_HARD",
398 /*  4 */	"QUERY"
399 };
400 
401 const char	*idnfinopt_str[] = {
402 /*  0 */	"NONE",
403 /*  1 */	"UNLINK",
404 /*  2 */	"RELINK"
405 };
406 
407 const char	*idnfinarg_str[] = {
408 /*  0 */	"NONE",
409 /*  1 */	"SMRBAD",
410 /*  2 */	"CPUCFG",
411 /*  3 */	"HWERR",
412 /*  4 */	"CFGERR_FATAL",
413 /*  5 */	"CFGERR_MTU",
414 /*  6 */	"CFGERR_BUF",
415 /*  7 */	"CFGERR_SLAB",
416 /*  8 */	"CFGERR_NWR",
417 /*  9 */	"CFGERR_NETS",
418 /* 10 */	"CFGERR_MBOX",
419 /* 11 */	"CFGERR_NMCADR",
420 /* 12 */	"CFGERR_MCADR",
421 /* 13 */	"CFGERR_CKSUM",
422 /* 14 */	"CFGERR_SMR",
423 };
424 
425 const char	*idnsync_str[] = {
426 /*  0 */	"NIL",
427 /*  1 */	"CONNECT",
428 /*  2 */	"DISCONNECT"
429 };
430 
431 const char	*idnreg_str[] = {
432 /*  0 */	"REG",
433 /*  1 */	"NEW",
434 /*  2 */	"QUERY"
435 };
436 
437 const char	*idnnack_str[] = {
438 /*  0 */	"unknown",
439 /*  1 */	"NOCONN",
440 /*  2 */	"BADCHAN",
441 /*  3 */	"BADCFG",
442 /*  4 */	"BADCMD",
443 /*  5 */	"RETRY",
444 /*  6 */	"DUP",
445 /*  7 */	"EXIT",
446 /*  8 */	"--reserved1",
447 /*  9 */	"--reserved2",
448 /* 10 */	"--reserved3"
449 };
450 
451 const char	*idnop_str[] = {
452 /*  0 */	"DISCONNECTED",
453 /*  1 */	"CONNECTED",
454 /*  2 */	"ERROR"
455 };
456 
457 const char	*chanop_str[] = {
458 /*  0 */	"OPEN",
459 /*  1 */	"SOFT_CLOSE",
460 /*  2 */	"HARD_CLOSE",
461 /*  3 */	"OFFLINE",
462 /*  4 */	"ONLINE"
463 };
464 
465 const char	*chanaction_str[] = {
466 /*  0 */	"DETACH",
467 /*  1 */	"STOP",
468 /*  2 */	"SUSPEND",
469 /*  3 */	"RESUME",
470 /*  4 */	"RESTART",
471 /*  5 */	"ATTACH"
472 };
473 
474 const char	*timer_str[] = {
475 /* 0 */		"NIL",
476 /* 1 */		"MSG"
477 };
478 
479 static struct module_info idnrinfo = {
480 	IDNIDNUM,		/* mi_idnum */
481 	IDNNAME,		/* mi_idname */
482 	IDNMINPSZ,		/* mi_minpsz */
483 	IDNMAXPSZ,		/* mi_maxpsz */
484 	0,			/* mi_hiwat - see IDN_HIWAT */
485 	0			/* mi_lowat - see IDN_LOWAT */
486 };
487 
488 static struct module_info idnwinfo = {
489 	IDNIDNUM,		/* mi_idnum */
490 	IDNNAME,		/* mi_idname */
491 	IDNMINPSZ,		/* mi_minpsz */
492 	IDNMAXPSZ,		/* mi_maxpsz */
493 	0,			/* mi_hiwat - see IDN_HIWAT */
494 	0			/* mi_lowat - see IDN_LOWAT */
495 };
496 
497 static struct qinit idnrinit = {
498 	idnrput,		/* qi_putp */
499 	NULL,			/* qi_srvp */
500 	idnopen,		/* qi_qopen */
501 	idnclose,		/* qi_qclose */
502 	NULL,			/* qi_qadmin */
503 	&idnrinfo,		/* qi_minfo */
504 	NULL,			/* qi_mstat */
505 	NULL,			/* qi_rwp */
506 	NULL,			/* qi_infop */
507 	STRUIOT_DONTCARE	/* qi_struiot */
508 };
509 
510 static struct qinit idnwinit = {
511 	idnwput,		/* qi_putp */
512 	idnwsrv,		/* qi_srvp */
513 	NULL,			/* qi_qopen */
514 	NULL,			/* qi_qclose */
515 	NULL,			/* qi_qadmin */
516 	&idnwinfo,		/* qi_minfo */
517 	NULL,			/* qi_mstat */
518 	NULL,			/* qi_rwp */
519 	NULL,			/* qi_infop */
520 	STRUIOT_DONTCARE	/* qi_struiot */
521 };
522 
523 struct streamtab idninfo = {
524 	&idnrinit,		/* st_rdinit */
525 	&idnwinit,		/* st_wrinit */
526 	NULL,			/* st_muxrinit */
527 	NULL,			/* st_muxwinit */
528 };
529 
530 /*
531  * Module linkage information (cb_ops & dev_ops) for the kernel.
532  */
533 
534 static struct cb_ops cb_idnops = {
535 	nulldev,		/* cb_open */
536 	nulldev,		/* cb_close */
537 	nodev,			/* cb_strategy */
538 	nodev,			/* cb_print */
539 	nodev,			/* cb_dump */
540 	nodev,			/* cb_read */
541 	nodev,			/* cb_write */
542 	nodev,			/* cb_ioctl */
543 	nodev,			/* cb_devmap */
544 	nodev,			/* cb_mmap */
545 	nodev,			/* cb_segmap */
546 	nochpoll,		/* cb_chpoll */
547 	ddi_prop_op,		/* cb_prop_op */
548 	&idninfo,		/* cb_stream */
549 	D_MP,			/* cb_flag */
550 	CB_REV,			/* cb_rev */
551 	nodev,			/* cb_aread */
552 	nodev,			/* cb_awrite */
553 };
554 
555 static struct dev_ops idnops = {
556 	DEVO_REV,		/* devo_rev */
557 	0,			/* devo_refcnt */
558 	ddi_no_info,		/* devo_getinfo */
559 	nulldev,		/* devo_identify */
560 	nulldev,		/* devo_probe */
561 	idnattach,		/* devo_attach */
562 	idndetach,		/* devo_detach */
563 	nodev,			/* devo_reset */
564 	&cb_idnops,		/* devo_cb_ops */
565 	(struct bus_ops *)NULL,	/* devo_bus_ops */
566 	NULL,			/* devo_power */
567 	ddi_quiesce_not_needed,		/* quiesce */
568 };
569 
570 extern cpuset_t	cpu_ready_set;
571 
572 static struct modldrv modldrv = {
573 	&mod_driverops,		/* This module is a pseudo driver */
574 	IDNDESC " 1.58",
575 	&idnops
576 };
577 
578 static struct modlinkage modlinkage = {
579 	MODREV_1,
580 	&modldrv,
581 	NULL
582 };
583 
584 /*
585  * --------------------------------------------------
586  */
587 int
588 _init(void)
589 {
590 	idn.version = IDN_VERSION;
591 
592 	return (mod_install(&modlinkage));
593 }
594 
595 int
596 _fini(void)
597 {
598 	return (mod_remove(&modlinkage));
599 }
600 
601 int
602 _info(struct modinfo *modinfop)
603 {
604 	return (mod_info(&modlinkage, modinfop));
605 }
606 
607 /*
608  * ----------------------------------------------
609  */
610 static int
611 idnattach(dev_info_t *dip, ddi_attach_cmd_t cmd)
612 {
613 	int		instance;
614 	int		doinit = 0;
615 	processorid_t	bcpuid;
616 	struct idn	*sip;
617 	struct idnstr	*stp;
618 	procname_t	proc = "idnattach";
619 
620 
621 #ifndef	lint
622 	ASSERT(sizeof (idnsb_t) == IDNSB_SIZE);
623 	ASSERT(offsetof(struct idnsb, id_hwchkpt[0]) == 0x40);
624 #endif	/* lint */
625 
626 	switch (cmd) {
627 	case DDI_RESUME:
628 		sip = ddi_get_driver_private(dip);
629 		/*
630 		 * sip may have not yet been set if the
631 		 * OBP environment variable (idn-smr-size)
632 		 * was not set.
633 		 */
634 		if (sip == NULL)
635 			return (DDI_FAILURE);
636 		/*
637 		 * RESUME IDN services.
638 		 */
639 		IDN_GLOCK_SHARED();
640 		if (idn.state != IDNGS_OFFLINE) {
641 			cmn_err(CE_WARN,
642 			    "IDN: 101: not in expected OFFLINE state "
643 			    "for DDI_RESUME");
644 			ASSERT(0);
645 		}
646 		IDN_GUNLOCK();
647 
648 		/*
649 		 * RESUME DLPI services.
650 		 */
651 		sip->si_flags &= ~IDNSUSPENDED;
652 
653 		rw_enter(&idn.struprwlock, RW_READER);
654 		for (stp = idn.strup; stp; stp = stp->ss_nextp)
655 			if (stp->ss_sip == sip) {
656 				doinit = 1;
657 				break;
658 			}
659 		rw_exit(&idn.struprwlock);
660 		if (doinit)
661 			(void) idndl_init(sip);
662 
663 		return (DDI_SUCCESS);
664 
665 	case DDI_ATTACH:
666 		break;
667 
668 	default:
669 		return (DDI_FAILURE);
670 	}
671 
672 	instance = ddi_get_instance(dip);
673 
674 	PR_DRV("%s: instance = %d\n", proc, instance);
675 
676 	if (idn_check_conf(dip, &bcpuid) == IDN_GPROPS_ERROR)
677 		return (DDI_FAILURE);
678 
679 	mutex_enter(&idn.siplock);
680 
681 	if (ddi_create_minor_node(dip, IDNNAME, S_IFCHR, instance,
682 	    DDI_NT_NET, CLONE_DEV) == DDI_FAILURE) {
683 		mutex_exit(&idn.siplock);
684 		return (DDI_FAILURE);
685 	}
686 
687 	if (idn.smr.ready == 0) {
688 		if (idn_init_smr() == 0) {
689 			idn.enabled = 1;
690 #ifdef DEBUG
691 			cmn_err(CE_NOTE, "!IDN: Driver enabled");
692 #endif /* DEBUG */
693 		} else {
694 			cmn_err(CE_NOTE,
695 			    "!IDN: 102: driver disabled "
696 			    "- check OBP environment "
697 			    "(idn-smr-size)");
698 			mutex_exit(&idn.siplock);
699 			return (DDI_SUCCESS);
700 		}
701 	}
702 
703 	ASSERT(idn.smr.ready || idn.enabled);
704 
705 	if (idn.dip == NULL) {
706 		doinit = 1;
707 
708 		if (idn_size_check()) {
709 			idn_deinit_smr();
710 			ddi_remove_minor_node(dip, NULL);
711 			mutex_exit(&idn.siplock);
712 			return (DDI_FAILURE);
713 		}
714 
715 		if (idn_init(dip)) {
716 			idn_deinit_smr();
717 			ddi_remove_minor_node(dip, NULL);
718 			mutex_exit(&idn.siplock);
719 			return (DDI_FAILURE);
720 		}
721 	}
722 
723 	ASSERT(idn.dip);
724 
725 	/*
726 	 * This must occur _after_ idn_init() since
727 	 * it assumes idn_chanservers_init() has been
728 	 * called.
729 	 */
730 	idn_chanserver_bind(ddi_get_instance(dip), bcpuid);
731 
732 	/*
733 	 * DLPI supporting stuff.
734 	 */
735 	sip = GETSTRUCT(struct idn, 1);
736 	sip->si_dip = dip;
737 	ddi_set_driver_private(dip, sip);
738 	sip->si_nextp = idn.sip;
739 	idn.sip = sip;
740 	IDN_SET_INST2SIP(instance, sip);
741 	mutex_exit(&idn.siplock);
742 
743 	if (doinit)
744 		idndl_dlpi_init();	/* initializes idninfoack */
745 	/*
746 	 * Get our local IDN ethernet address.
747 	 */
748 	idndl_localetheraddr(sip, &sip->si_ouraddr);
749 	idndl_statinit(sip);
750 
751 	if (doinit) {
752 		idn_gkstat_init();
753 		/*
754 		 * Add our sigblock SSP interrupt handler.
755 		 */
756 		mutex_enter(&idn.sigbintr.sb_mutex);
757 		idn_sigbhandler_create();
758 		mutex_exit(&idn.sigbintr.sb_mutex);
759 
760 		if (sgnblk_poll_register(idn_sigbhandler) == 0) {
761 			mutex_enter(&idn.sigbintr.sb_mutex);
762 			idn_sigbhandler_kill();
763 			idn.sigbintr.sb_cpuid = (uchar_t)-1;
764 			idn.sigbintr.sb_busy = IDNSIGB_INACTIVE;
765 			mutex_exit(&idn.sigbintr.sb_mutex);
766 
767 			idn_gkstat_deinit();
768 
769 			mutex_enter(&idn.siplock);
770 			(void) idn_deinit();
771 			IDN_SET_INST2SIP(instance, NULL);
772 			idn.sip = sip->si_nextp;
773 			mutex_exit(&idn.siplock);
774 
775 			ddi_remove_minor_node(dip, NULL);
776 
777 			return (DDI_FAILURE);
778 		}
779 		/*
780 		 * We require sigblkp[cpu0] to be mapped for hardware
781 		 * configuration determination and also auto-linking
782 		 * on bootup.
783 		 */
784 		if (sgnblk_poll_reference(idn_sigb_setup, NULL) != 0) {
785 			(void) sgnblk_poll_unregister(idn_sigbhandler);
786 			mutex_enter(&idn.sigbintr.sb_mutex);
787 			idn_sigbhandler_kill();
788 			idn.sigbintr.sb_cpuid = (uchar_t)-1;
789 			idn.sigbintr.sb_busy = IDNSIGB_INACTIVE;
790 			mutex_exit(&idn.sigbintr.sb_mutex);
791 
792 			idn_gkstat_deinit();
793 
794 			mutex_enter(&idn.siplock);
795 			(void) idn_deinit();
796 			IDN_SET_INST2SIP(instance, NULL);
797 			idn.sip = sip->si_nextp;
798 			mutex_exit(&idn.siplock);
799 
800 			ddi_remove_minor_node(dip, NULL);
801 
802 			cmn_err(CE_WARN,
803 			    "IDN: 103: unable to reference sigblock area");
804 
805 			return (DDI_FAILURE);
806 		}
807 
808 		idn_init_autolink();
809 	}
810 
811 	ddi_report_dev(dip);
812 
813 	return (DDI_SUCCESS);
814 }
815 
816 /*
817  * ----------------------------------------------
818  */
819 static int
820 idndetach(dev_info_t *dip, ddi_detach_cmd_t cmd)
821 {
822 	int		err = 0;
823 	int		instance;
824 	struct idn	*sip, *hsip, *tsip;
825 	procname_t	proc = "idndetach";
826 
827 	sip = ddi_get_driver_private(dip);
828 	instance = ddi_get_instance(dip);
829 
830 	switch (cmd) {
831 	case DDI_SUSPEND:
832 		if (sip == NULL)
833 			return (DDI_FAILURE);
834 		/*
835 		 * SUSPEND IDN services.
836 		 * - Actually don't suspend anything, we just
837 		 *   make sure we're not connected per DR protocol.
838 		 *   If we really wanted to suspend it should
839 		 *   be done _after_ DLPI is suspended so that
840 		 *   we're not competing with that traffic.
841 		 */
842 		IDN_GLOCK_SHARED();
843 
844 		if (idn.state != IDNGS_OFFLINE) {
845 			int	d;
846 
847 			cmn_err(CE_WARN,
848 			    "IDN: 104: cannot suspend while active "
849 			    "(state = %s)",
850 			    idngs_str[idn.state]);
851 
852 			for (d = 0; d < MAX_DOMAINS; d++) {
853 				idn_domain_t	*dp;
854 
855 				dp = &idn_domain[d];
856 				if (dp->dcpu < 0)
857 					continue;
858 
859 				cmn_err(CE_CONT,
860 				    "IDN: 121: domain %d (CPU %d, name "
861 				    "\"%s\", state %s)\n",
862 				    d, dp->dcpu, dp->dname,
863 				    idnds_str[dp->dstate]);
864 			}
865 			err = 1;
866 		}
867 
868 		IDN_GUNLOCK();
869 
870 		if (err)
871 			return (DDI_FAILURE);
872 		/*
873 		 * SUSPEND DLPI services.
874 		 */
875 		sip->si_flags |= IDNSUSPENDED;
876 
877 		idndl_uninit(sip);
878 
879 		return (DDI_FAILURE);
880 
881 	case DDI_DETACH:
882 		if (idn.enabled == 0) {
883 			ddi_remove_minor_node(dip, NULL);
884 			ASSERT(idn.dip == NULL);
885 			return (DDI_SUCCESS);
886 		}
887 		if (!IDN_MODUNLOADABLE)
888 			return (DDI_FAILURE);
889 		break;
890 
891 	default:
892 		return (DDI_FAILURE);
893 	}
894 
895 	PR_DRV("%s: instance = %d\n", proc, instance);
896 
897 	if (sip == NULL) {
898 		/*
899 		 * No resources allocated.
900 		 */
901 		return (DDI_SUCCESS);
902 	}
903 
904 	mutex_enter(&idn.siplock);
905 	if (idn.sip && (idn.sip->si_nextp == NULL)) {
906 		/*
907 		 * This is our last stream connection
908 		 * going away.  Time to deinit and flag
909 		 * the SSP we're (IDN) DOWN.
910 		 */
911 		if (idn_deinit()) {
912 			/*
913 			 * Must still be active.
914 			 */
915 			mutex_exit(&idn.siplock);
916 			return (DDI_FAILURE);
917 		}
918 		idn_deinit_autolink();
919 		/*
920 		 * Remove our sigblock SSP interrupt handler.
921 		 */
922 		(void) sgnblk_poll_unregister(idn_sigbhandler);
923 		mutex_enter(&idn.sigbintr.sb_mutex);
924 		idn_sigbhandler_kill();
925 		idn.sigbintr.sb_cpuid = (uchar_t)-1;
926 		idn.sigbintr.sb_busy = IDNSIGB_NOTREADY;
927 		mutex_exit(&idn.sigbintr.sb_mutex);
928 		/*
929 		 * Remove our reference to the sigblock area.
930 		 */
931 		sgnblk_poll_unreference(idn_sigb_setup);
932 		idn_gkstat_deinit();
933 	}
934 
935 	ddi_remove_minor_node(dip, NULL);
936 
937 	/*
938 	 * Remove this instance from our linked list.
939 	 */
940 	IDN_SET_INST2SIP(instance, NULL);
941 	if ((hsip = tsip = idn.sip) == sip) {
942 		idn.sip = sip->si_nextp;
943 	} else {
944 		for (; hsip && (sip != hsip); tsip = hsip,
945 		    hsip = hsip->si_nextp)
946 			;
947 		if (hsip)
948 			tsip->si_nextp = hsip->si_nextp;
949 	}
950 	mutex_exit(&idn.siplock);
951 	if (sip->si_ksp)
952 		kstat_delete(sip->si_ksp);
953 
954 	ddi_set_driver_private(dip, NULL);
955 
956 	FREESTRUCT(sip, struct idn, 1);
957 
958 	return (DDI_SUCCESS);
959 }
960 
961 /*
962  * ----------------------------------------------
963  */
964 static idn_gprops_t
965 idn_check_conf(dev_info_t *dip, processorid_t *cpuid)
966 {
967 	static idn_gprops_t	global_props = IDN_GPROPS_UNCHECKED;
968 
969 	if (global_props == IDN_GPROPS_UNCHECKED) {
970 		int		p;
971 
972 		global_props = IDN_GPROPS_OKAY;
973 
974 		for (p = 0; idn_global_props[p].p_string; p++) {
975 			char	*str;
976 			int	*var;
977 			int	val, v_min, v_max, v_def;
978 
979 			str = idn_global_props[p].p_string;
980 			var = (int *)idn_global_props[p].p_var;
981 			v_min = idn_global_props[p].p_min;
982 			v_max = idn_global_props[p].p_max;
983 			v_def = idn_global_props[p].p_def;
984 			ASSERT(str && var);
985 
986 			val = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
987 			    DDI_PROP_DONTPASS |
988 			    DDI_PROP_NOTPROM,
989 			    str, v_def);
990 			if ((v_min != v_max) &&
991 			    ((val < v_min) || (val > v_max))) {
992 				cmn_err(CE_WARN,
993 				    "IDN: 105: driver parameter "
994 				    "(%s) specified (%d) out of "
995 				    "range [%d - %d]",
996 				    str, val, v_min, v_max);
997 				global_props = IDN_GPROPS_ERROR;
998 			} else {
999 				*var = val;
1000 			}
1001 		}
1002 	}
1003 
1004 	*cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
1005 	    DDI_PROP_DONTPASS | DDI_PROP_NOTPROM,
1006 	    "bind_cpu", -1);
1007 
1008 	return (global_props);
1009 }
1010 
1011 static int
1012 idn_size_check()
1013 {
1014 	int		i, cnt;
1015 	int		rv = 0;
1016 	ulong_t		mboxareasize;
1017 	int		max_num_slabs;
1018 	procname_t	proc = "idn_size_check";
1019 
1020 	if (IDN_NWR_SIZE == 0)
1021 		IDN_NWR_SIZE = IDN_SMR_SIZE;
1022 
1023 	if (IDN_NWR_SIZE > IDN_SMR_SIZE) {
1024 		cmn_err(CE_WARN,
1025 		    "IDN: 106: idn_nwr_size(%d) > idn_smr_size(%d)"
1026 		    " - Limiting to %d MB",
1027 		    IDN_NWR_SIZE, IDN_SMR_SIZE, IDN_SMR_SIZE);
1028 		IDN_NWR_SIZE = IDN_SMR_SIZE;
1029 	}
1030 
1031 	if (MB2B(IDN_NWR_SIZE) < IDN_SLAB_SIZE) {
1032 		cmn_err(CE_WARN,
1033 		    "IDN: 107: memory region(%lu) < slab size(%u)",
1034 		    MB2B(IDN_NWR_SIZE), IDN_SLAB_SIZE);
1035 		rv = -1;
1036 	}
1037 
1038 	if (IDN_LOWAT >= IDN_HIWAT) {
1039 		cmn_err(CE_WARN,
1040 		    "IDN: 108: idn_lowat(%d) >= idn_hiwat(%d)",
1041 		    IDN_LOWAT, IDN_HIWAT);
1042 		rv = -1;
1043 	}
1044 
1045 	mboxareasize = (ulong_t)(IDN_MBOXAREA_SIZE + (IDN_SMR_BUFSIZE - 1));
1046 	mboxareasize &= ~((ulong_t)IDN_SMR_BUFSIZE - 1);
1047 #ifdef DEBUG
1048 	if ((ulong_t)IDN_SLAB_SIZE < mboxareasize) {
1049 		PR_DRV("%s: slab size(%d) < mailbox area(%ld)",
1050 		    proc, IDN_SLAB_SIZE, mboxareasize);
1051 		/* not fatal */
1052 	}
1053 #endif /* DEBUG */
1054 
1055 	if ((mboxareasize + (ulong_t)IDN_SLAB_SIZE) > MB2B(IDN_NWR_SIZE)) {
1056 		cmn_err(CE_WARN,
1057 		    "IDN: 109: mailbox area(%lu) + slab size(%u) "
1058 		    "> nwr region(%lu)",
1059 		    mboxareasize, IDN_SLAB_SIZE,
1060 		    MB2B(IDN_NWR_SIZE));
1061 		rv = -1;
1062 	}
1063 
1064 	max_num_slabs = (int)((MB2B(IDN_NWR_SIZE) - mboxareasize) /
1065 	    (ulong_t)IDN_SLAB_SIZE);
1066 	if (max_num_slabs < IDN_SLAB_MINTOTAL) {
1067 		cmn_err(CE_WARN,
1068 		    "IDN: 110: maximum number of slabs(%d) < "
1069 		    "minimum required(%d)",
1070 		    max_num_slabs, IDN_SLAB_MINTOTAL);
1071 		rv = -1;
1072 	} else {
1073 		IDN_SLAB_MAXPERDOMAIN = max_num_slabs / IDN_SLAB_MINTOTAL;
1074 	}
1075 
1076 #if 0
1077 	if ((IDN_MTU + sizeof (struct ether_header)) > IDN_DATA_SIZE) {
1078 		cmn_err(CE_WARN,
1079 		    "IDN: (IDN_MTU(%d) + ether_header(%d)) "
1080 		    "> IDN_DATA_SIZE(%lu)",
1081 		    IDN_MTU, sizeof (struct ether_header),
1082 		    IDN_DATA_SIZE);
1083 		rv = -1;
1084 	}
1085 #endif /* 0 */
1086 
1087 	if (IDN_SMR_BUFSIZE & (IDN_ALIGNSIZE - 1)) {
1088 		cmn_err(CE_WARN,
1089 		    "IDN: 111: idn_smr_bufsize(%d) not on a "
1090 		    "64 byte boundary", IDN_SMR_BUFSIZE);
1091 		rv = -1;
1092 	}
1093 
1094 	for (i = cnt = 0;
1095 	    (cnt <= 1) && (((ulong_t)1 << i) < MB2B(IDN_NWR_SIZE));
1096 	    i++)
1097 		if ((1 << i) & IDN_SMR_BUFSIZE)
1098 			cnt++;
1099 	if ((i > 0) && (!cnt || (cnt > 1))) {
1100 		cmn_err(CE_WARN,
1101 		    "IDN: 112: idn_smr_bufsize(%d) not a power of 2",
1102 		    IDN_SMR_BUFSIZE);
1103 		rv = -1;
1104 	}
1105 
1106 	if ((IDN_MBOX_PER_NET & 1) == 0) {
1107 		cmn_err(CE_WARN,
1108 		    "IDN: 113: idn_mbox_per_net(%d) must be an "
1109 		    "odd number", IDN_MBOX_PER_NET);
1110 		rv = -1;
1111 	}
1112 
1113 	if (idn.nchannels > 0)
1114 		IDN_WINDOW_EMAX = IDN_WINDOW_MAX +
1115 		    ((idn.nchannels - 1) * IDN_WINDOW_INCR);
1116 
1117 	if (IDN_NETSVR_WAIT_MIN > IDN_NETSVR_WAIT_MAX) {
1118 		cmn_err(CE_WARN,
1119 		    "IDN: 115: idn_netsvr_wait_min(%d) cannot be "
1120 		    "greater than idn_netsvr_wait_max(%d)",
1121 		    IDN_NETSVR_WAIT_MIN,
1122 		    IDN_NETSVR_WAIT_MAX);
1123 		rv = -1;
1124 	}
1125 
1126 	return (rv);
1127 }
1128 
1129 static int
1130 idn_init_smr()
1131 {
1132 	uint64_t	obp_paddr;
1133 	uint64_t	obp_size;	/* in Bytes */
1134 	uint_t		smr_size;	/* in MBytes */
1135 	pgcnt_t		npages;
1136 	procname_t	proc = "idn_init_smr";
1137 
1138 	if (idn.smr.ready)
1139 		return (0);
1140 
1141 	if (idn_prom_getsmr(&smr_size, &obp_paddr, &obp_size) < 0)
1142 		return (-1);
1143 
1144 	PR_PROTO("%s: smr_size = %d, obp_paddr = 0x%lx, obp_size = 0x%lx\n",
1145 	    proc, smr_size, obp_paddr, obp_size);
1146 
1147 	if (IDN_SMR_SIZE)
1148 		smr_size = MIN(smr_size, IDN_SMR_SIZE);
1149 
1150 	npages = btopr(MB2B(smr_size));
1151 
1152 	idn.smr.prom_paddr = obp_paddr;
1153 	idn.smr.prom_size = obp_size;
1154 	idn.smr.vaddr = vmem_alloc(heap_arena, ptob(npages), VM_SLEEP);
1155 	ASSERT(((ulong_t)idn.smr.vaddr & MMU_PAGEOFFSET) == 0);
1156 	idn.smr.locpfn = (pfn_t)(obp_paddr >> MMU_PAGESHIFT);
1157 	idn.smr.rempfn = idn.smr.rempfnlim = PFN_INVALID;
1158 	IDN_SMR_SIZE = smr_size;
1159 
1160 	PR_PROTO("%s: smr vaddr = %p\n", proc, (void *)idn.smr.vaddr);
1161 
1162 	smr_remap(&kas, idn.smr.vaddr, idn.smr.locpfn, IDN_SMR_SIZE);
1163 
1164 	idn.localid = PADDR_TO_DOMAINID(obp_paddr);
1165 
1166 	idn.smr.ready = 1;
1167 
1168 	return (0);
1169 }
1170 
1171 static void
1172 idn_deinit_smr()
1173 {
1174 	pgcnt_t		npages;
1175 
1176 	if (idn.smr.ready == 0)
1177 		return;
1178 
1179 	smr_remap(&kas, idn.smr.vaddr, PFN_INVALID, IDN_SMR_SIZE);
1180 
1181 	npages = btopr(MB2B(IDN_SMR_SIZE));
1182 
1183 	vmem_free(heap_arena, idn.smr.vaddr, ptob(npages));
1184 
1185 	idn.localid = IDN_NIL_DOMID;
1186 
1187 	IDN_SMR_SIZE = 0;
1188 
1189 	idn.smr.ready = 0;
1190 }
1191 
1192 /*ARGSUSED1*/
1193 static void
1194 idn_sigb_setup(cpu_sgnblk_t *sigbp, void *arg)
1195 {
1196 	procname_t	proc = "idn_sigb_setup";
1197 
1198 	PR_PROTO("%s: Setting sigb to %p\n", proc, (void *)sigbp);
1199 
1200 	mutex_enter(&idn.idnsb_mutex);
1201 	if (sigbp == NULL) {
1202 		idn.idnsb = NULL;
1203 		idn.idnsb_eventp = NULL;
1204 		mutex_exit(&idn.idnsb_mutex);
1205 		return;
1206 	}
1207 	idn.idnsb_eventp = (idnsb_event_t *)sigbp->sigb_idn;
1208 	idn.idnsb = (idnsb_t *)&idn.idnsb_eventp->idn_reserved1;
1209 	mutex_exit(&idn.idnsb_mutex);
1210 }
1211 
1212 static int
1213 idn_init(dev_info_t *dip)
1214 {
1215 	struct hwconfig	local_hw;
1216 	procname_t	proc = "idn_init";
1217 
1218 
1219 	ASSERT(MUTEX_HELD(&idn.siplock));
1220 
1221 	if (!idn.enabled) {
1222 		cmn_err(CE_WARN,
1223 		    "IDN: 117: IDN not enabled");
1224 		return (-1);
1225 	}
1226 
1227 	if (idn.dip != NULL) {
1228 		PR_DRV("%s: already initialized (dip = 0x%p)\n",
1229 		    proc, (void *)idn.dip);
1230 		return (0);
1231 	}
1232 
1233 	/*
1234 	 * Determine our local domain's hardware configuration.
1235 	 */
1236 	if (get_hw_config(&local_hw)) {
1237 		cmn_err(CE_WARN,
1238 		    "IDN: 118: hardware config not appropriate");
1239 		return (-1);
1240 	}
1241 
1242 	PR_DRV("%s: locpfn = 0x%lx\n", proc, idn.smr.locpfn);
1243 	PR_DRV("%s: rempfn = 0x%lx\n", proc, idn.smr.rempfn);
1244 	PR_DRV("%s: smrsize = %d MB\n", proc, IDN_SMR_SIZE);
1245 
1246 	rw_init(&idn.grwlock, NULL, RW_DEFAULT, NULL);
1247 	rw_init(&idn.struprwlock, NULL, RW_DEFAULT, NULL);
1248 	mutex_init(&idn.sync.sz_mutex, NULL, MUTEX_DEFAULT, NULL);
1249 	mutex_init(&idn.sipwenlock, NULL, MUTEX_DEFAULT, NULL);
1250 
1251 	/*
1252 	 * Calculate proper value for idn.bframe_shift.
1253 	 * Kind of hokey as it assume knowledge of the format
1254 	 * of the idnparam_t structure.
1255 	 */
1256 	{
1257 		int		s;
1258 
1259 		for (s = 0; (1 << s) < IDN_SMR_BUFSIZE_MIN; s++)
1260 			;
1261 		idn.bframe_shift = s;
1262 		PR_DRV("%s: idn.bframe_shift = %d, minbuf = %d\n",
1263 		    proc, idn.bframe_shift, IDN_SMR_BUFSIZE_MIN);
1264 
1265 		ASSERT((uint_t)IDN_OFFSET2BFRAME(MB2B(idn_smr_size)) <
1266 		    (1 << 24));
1267 	}
1268 
1269 	idn_xmit_monitor_init();
1270 
1271 	/*
1272 	 * Initialize the domain op (dopers) stuff.
1273 	 */
1274 	idn_dopers_init();
1275 
1276 	/*
1277 	 * Initialize the timer (kmem) cache used for timeout
1278 	 * structures.
1279 	 */
1280 	idn_timercache_init();
1281 
1282 	/*
1283 	 * Initialize the slab waiting areas.
1284 	 */
1285 	(void) smr_slabwaiter_init();
1286 
1287 	/*
1288 	 * Initialize retryjob kmem cache.
1289 	 */
1290 	idn_retrytask_init();
1291 
1292 	idn_init_msg_waittime();
1293 	idn_init_msg_retrytime();
1294 
1295 	/*
1296 	 * Initialize idn_domains[] and local domains information
1297 	 * include idn_global information.
1298 	 */
1299 	idn_domains_init(&local_hw);
1300 
1301 	/*
1302 	 * Start up IDN protocol servers.
1303 	 */
1304 	if (idn_protocol_init(idn_protocol_nservers) <= 0) {
1305 		cmn_err(CE_WARN,
1306 		    "IDN: 119: failed to initialize %d protocol servers",
1307 		    idn_protocol_nservers);
1308 		idn_domains_deinit();
1309 		idn_retrytask_deinit();
1310 		smr_slabwaiter_deinit();
1311 		idn_timercache_deinit();
1312 		idn_dopers_deinit();
1313 		idn_xmit_monitor_deinit();
1314 		mutex_destroy(&idn.sipwenlock);
1315 		mutex_destroy(&idn.sync.sz_mutex);
1316 		rw_destroy(&idn.grwlock);
1317 		rw_destroy(&idn.struprwlock);
1318 		return (-1);
1319 	}
1320 
1321 	/*
1322 	 * Initialize chan_servers array.
1323 	 */
1324 	(void) idn_chanservers_init();
1325 
1326 	/*
1327 	 * Need to register the IDN handler with the DMV subsystem.
1328 	 *
1329 	 * Need to prevent the IDN driver from being unloaded
1330 	 * once loaded since DMV's may come in at any time.
1331 	 * If the driver is not loaded and the idn_dmv_handler
1332 	 * has been registered with the DMV, system will crash.
1333 	 */
1334 	(void) idn_init_handler();
1335 
1336 	idn.dip = dip;
1337 	IDN_GLOCK_EXCL();
1338 	IDN_GSTATE_TRANSITION(IDNGS_OFFLINE);
1339 	IDN_GUNLOCK();
1340 
1341 	return (0);
1342 }
1343 
1344 static int
1345 idn_deinit()
1346 {
1347 	procname_t	proc = "idn_deinit";
1348 
1349 	ASSERT(MUTEX_HELD(&idn.siplock));
1350 
1351 	IDN_GLOCK_EXCL();
1352 
1353 	if (idn.state != IDNGS_OFFLINE) {
1354 		int	d;
1355 
1356 		cmn_err(CE_WARN,
1357 		    "IDN: 120: cannot deinit while active "
1358 		    "(state = %s)", idngs_str[idn.state]);
1359 
1360 		for (d = 0; d < MAX_DOMAINS; d++) {
1361 			idn_domain_t	*dp;
1362 
1363 			dp = &idn_domain[d];
1364 			if (dp->dcpu < 0)
1365 				continue;
1366 
1367 			cmn_err(CE_CONT,
1368 			    "IDN: 121: domain %d (CPU %d, "
1369 			    "name \"%s\", state %s)\n",
1370 			    d, dp->dcpu, dp->dname,
1371 			    idnds_str[dp->dstate]);
1372 		}
1373 		IDN_GUNLOCK();
1374 		return (-1);
1375 	}
1376 
1377 	if (idn.dip == NULL) {
1378 		PR_DRV("%s: already deinitialized\n", proc);
1379 		IDN_GUNLOCK();
1380 		return (0);
1381 	}
1382 
1383 	IDN_GSTATE_TRANSITION(IDNGS_IGNORE);
1384 
1385 	IDN_GUNLOCK();
1386 
1387 	idn_xmit_monitor_deinit();
1388 
1389 	idn_deinit_handler();
1390 
1391 	idn_chanservers_deinit();
1392 
1393 	idn.nchannels = 0;
1394 	ASSERT(idn.chan_servers == NULL);
1395 
1396 	smr_slabpool_deinit();
1397 
1398 	idn_protocol_deinit();
1399 
1400 	idn_domains_deinit();
1401 
1402 	smr_slabwaiter_deinit();
1403 
1404 	idn_retrytask_deinit();
1405 
1406 	idn_timercache_deinit();
1407 
1408 	idn_dopers_deinit();
1409 
1410 	ASSERT(idn.localid == IDN_NIL_DOMID);
1411 
1412 	IDN_SET_MASTERID(IDN_NIL_DOMID);
1413 
1414 	idn_deinit_smr();
1415 
1416 	mutex_destroy(&idn.sipwenlock);
1417 	mutex_destroy(&idn.sync.sz_mutex);
1418 	rw_destroy(&idn.grwlock);
1419 	rw_destroy(&idn.struprwlock);
1420 
1421 	idn.dip = NULL;
1422 
1423 	return (0);
1424 }
1425 
1426 static void
1427 idn_xmit_monitor_init()
1428 {
1429 	mutex_init(&idn.xmit_lock, NULL, MUTEX_DEFAULT, NULL);
1430 	idn.xmit_tid = (timeout_id_t)NULL;
1431 	CHANSET_ZERO(idn.xmit_chanset_wanted);
1432 }
1433 
1434 static void
1435 idn_xmit_monitor_deinit()
1436 {
1437 	timeout_id_t	tid;
1438 
1439 	mutex_enter(&idn.xmit_lock);
1440 	CHANSET_ZERO(idn.xmit_chanset_wanted);
1441 	if ((tid = idn.xmit_tid) != (timeout_id_t)NULL) {
1442 		idn.xmit_tid = (timeout_id_t)NULL;
1443 		mutex_exit(&idn.xmit_lock);
1444 		(void) untimeout(tid);
1445 	} else {
1446 		mutex_exit(&idn.xmit_lock);
1447 	}
1448 	mutex_destroy(&idn.xmit_lock);
1449 }
1450 
1451 static void
1452 idn_init_msg_waittime()
1453 {
1454 	idn_msg_waittime[IDNP_NULL] = -1;
1455 	idn_msg_waittime[IDNP_NEGO] = idn_msgwait_nego * hz;
1456 	idn_msg_waittime[IDNP_CFG]  = idn_msgwait_cfg * hz;
1457 	idn_msg_waittime[IDNP_CON]  = idn_msgwait_con * hz;
1458 	idn_msg_waittime[IDNP_FIN]  = idn_msgwait_fin * hz;
1459 	idn_msg_waittime[IDNP_CMD]  = idn_msgwait_cmd * hz;
1460 	idn_msg_waittime[IDNP_DATA] = idn_msgwait_data * hz;
1461 }
1462 
1463 static void
1464 idn_init_msg_retrytime()
1465 {
1466 	idn_msg_retrytime[(int)IDNRETRY_NIL]	 = -1;
1467 	idn_msg_retrytime[(int)IDNRETRY_NEGO]	 = idn_retryfreq_nego * hz;
1468 	idn_msg_retrytime[(int)IDNRETRY_CON]	 = idn_retryfreq_con * hz;
1469 	idn_msg_retrytime[(int)IDNRETRY_CONQ]	 = idn_retryfreq_con * hz;
1470 	idn_msg_retrytime[(int)IDNRETRY_FIN]	 = idn_retryfreq_fin * hz;
1471 	idn_msg_retrytime[(int)IDNRETRY_FINQ]	 = idn_retryfreq_fin * hz;
1472 }
1473 
1474 /*
1475  * ----------------------------------------------
1476  */
1477 /*ARGSUSED*/
1478 static int
1479 idnopen(register queue_t *rq, dev_t *devp, int flag, int sflag, cred_t *crp)
1480 {
1481 	register int	err = 0;
1482 	int		minordev;
1483 	struct idnstr	*stp, **pstp;
1484 	procname_t	proc = "idnopen";
1485 
1486 	ASSERT(sflag != MODOPEN);
1487 
1488 	IDN_GLOCK_EXCL();
1489 
1490 	rw_enter(&idn.struprwlock, RW_WRITER);
1491 	mutex_enter(&idn.sipwenlock);
1492 	pstp = &idn.strup;
1493 
1494 	if (idn.enabled == 0) {
1495 		PR_DRV("%s: Driver disabled (check OBP:idn-smr-size)\n",
1496 		    proc);
1497 		mutex_exit(&idn.sipwenlock);
1498 		rw_exit(&idn.struprwlock);
1499 		IDN_GUNLOCK();
1500 		return (EACCES);
1501 	}
1502 
1503 	if (!idn_ndlist &&
1504 	    idn_param_register(idn_param_arr, A_CNT(idn_param_arr))) {
1505 		PR_DRV("%s: failed to register ndd parameters\n", proc);
1506 		mutex_exit(&idn.sipwenlock);
1507 		rw_exit(&idn.struprwlock);
1508 		IDN_GUNLOCK();
1509 		return (ENOMEM);
1510 	}
1511 	IDN_GUNLOCK();
1512 
1513 	if (sflag == CLONEOPEN) {
1514 		minordev = 0;
1515 		for (stp = *pstp; stp; pstp = &stp->ss_nextp, stp = *pstp) {
1516 			if (minordev < stp->ss_minor)
1517 				break;
1518 			minordev++;
1519 		}
1520 		*devp = makedevice(getmajor(*devp), minordev);
1521 	} else {
1522 		minordev = getminor(*devp);
1523 	}
1524 	if (rq->q_ptr)
1525 		goto done;
1526 
1527 	stp = GETSTRUCT(struct idnstr, 1);
1528 	stp->ss_rq = rq;
1529 	stp->ss_minor = minordev;
1530 	rw_init(&stp->ss_rwlock, NULL, RW_DEFAULT, NULL);
1531 	/*
1532 	 * DLPI stuff
1533 	 */
1534 	stp->ss_sip = NULL;
1535 	stp->ss_state = DL_UNATTACHED;
1536 	stp->ss_sap = 0;
1537 	stp->ss_flags = 0;
1538 	stp->ss_mccount = 0;
1539 	stp->ss_mctab = NULL;
1540 
1541 	/*
1542 	 * Link new entry into list of actives.
1543 	 */
1544 	stp->ss_nextp = *pstp;
1545 	*pstp = stp;
1546 
1547 	WR(rq)->q_ptr = rq->q_ptr = (void *)stp;
1548 	/*
1549 	 * Disable automatic enabling of our write service
1550 	 * procedure.  We control this explicitly.
1551 	 */
1552 	noenable(WR(rq));
1553 
1554 	/*
1555 	 * Set our STREAMs queue maximum packet size that
1556 	 * we'll accept and our high/low water marks.
1557 	 */
1558 	(void) strqset(WR(rq), QMAXPSZ, 0, IDN_DATA_SIZE);
1559 	(void) strqset(WR(rq), QLOWAT,  0, IDN_LOWAT);
1560 	(void) strqset(WR(rq), QHIWAT,  0, IDN_HIWAT);
1561 	(void) strqset(rq, QMAXPSZ, 0, IDN_DATA_SIZE);
1562 	(void) strqset(rq, QLOWAT,  0, IDN_LOWAT);
1563 	(void) strqset(rq, QHIWAT,  0, IDN_HIWAT);
1564 
1565 done:
1566 	mutex_exit(&idn.sipwenlock);
1567 	rw_exit(&idn.struprwlock);
1568 
1569 	(void) qassociate(rq, -1);
1570 	qprocson(rq);
1571 
1572 	return (err);
1573 }
1574 
1575 /*
1576  * ----------------------------------------------
1577  */
1578 /*ARGSUSED1*/
1579 static int
1580 idnclose(queue_t *rq, int flag, cred_t *crp)
1581 {
1582 	struct idnstr	*stp, **pstp;
1583 
1584 	ASSERT(rq->q_ptr);
1585 
1586 	qprocsoff(rq);
1587 	/*
1588 	 * Guaranteed to be single threaded with respect
1589 	 * to this stream at this point.
1590 	 */
1591 
1592 	stp = (struct idnstr *)rq->q_ptr;
1593 
1594 	if (stp->ss_sip)
1595 		idndl_dodetach(stp);
1596 
1597 	rw_enter(&idn.struprwlock, RW_WRITER);
1598 	mutex_enter(&idn.sipwenlock);
1599 	pstp = &idn.strup;
1600 	for (stp = *pstp; stp; pstp = &stp->ss_nextp, stp = *pstp)
1601 		if (stp == (struct idnstr *)rq->q_ptr)
1602 			break;
1603 	ASSERT(stp);
1604 	ASSERT(stp->ss_rq == rq);
1605 	*pstp = stp->ss_nextp;
1606 
1607 	rw_destroy(&stp->ss_rwlock);
1608 	FREESTRUCT(stp, struct idnstr, 1);
1609 
1610 	WR(rq)->q_ptr = rq->q_ptr = NULL;
1611 	mutex_exit(&idn.sipwenlock);
1612 	rw_exit(&idn.struprwlock);
1613 
1614 	idn_param_cleanup();
1615 	(void) qassociate(rq, -1);
1616 
1617 	return (0);
1618 }
1619 
1620 /*
1621  * ----------------------------------------------
1622  */
1623 static int
1624 idnwput(register queue_t *wq, register mblk_t *mp)
1625 {
1626 	register struct idnstr	*stp;
1627 	struct idn		*sip;
1628 	procname_t	proc = "idnwput";
1629 
1630 	stp = (struct idnstr *)wq->q_ptr;
1631 	sip = stp->ss_sip;
1632 
1633 	switch (DB_TYPE(mp)) {
1634 	case M_IOCTL:
1635 		idnioctl(wq, mp);
1636 		break;
1637 
1638 	case M_DATA:
1639 		if (((stp->ss_flags & (IDNSFAST|IDNSRAW)) == 0) ||
1640 		    (stp->ss_state != DL_IDLE) ||
1641 		    (sip == NULL)) {
1642 			PR_DLPI("%s: fl=0x%x, st=0x%x, ret(EPROTO)\n",
1643 			    proc, stp->ss_flags, stp->ss_state);
1644 			merror(wq, mp, EPROTO);
1645 
1646 		} else if (wq->q_first) {
1647 			if (putq(wq, mp) == 0)
1648 				freemsg(mp);
1649 			/*
1650 			 * We're only holding the reader lock,
1651 			 * but that's okay since this field
1652 			 * is just a soft-flag.
1653 			 */
1654 			sip->si_wantw = 1;
1655 			qenable(wq);
1656 
1657 		} else if (sip->si_flags & IDNPROMISC) {
1658 			if (putq(wq, mp) == 0) {
1659 				PR_DLPI("%s: putq failed\n", proc);
1660 				freemsg(mp);
1661 			} else {
1662 				PR_DLPI("%s: putq succeeded\n", proc);
1663 			}
1664 			qenable(wq);
1665 
1666 		} else {
1667 			PR_DLPI("%s: idndl_start(sip=0x%p)\n",
1668 			    proc, (void *)sip);
1669 			rw_enter(&stp->ss_rwlock, RW_READER);
1670 			(void) idndl_start(wq, mp, sip);
1671 			rw_exit(&stp->ss_rwlock);
1672 		}
1673 		break;
1674 
1675 	case M_PROTO:
1676 	case M_PCPROTO:
1677 		/*
1678 		 * Break the association between the current thread
1679 		 * and the thread that calls idndl_proto() to resolve
1680 		 * the problem of idn_chan_server() threads which
1681 		 * loop back around to call idndl_proto and try to
1682 		 * recursively acquire internal locks.
1683 		 */
1684 		if (putq(wq, mp) == 0)
1685 			freemsg(mp);
1686 		qenable(wq);
1687 		break;
1688 
1689 	case M_FLUSH:
1690 		PR_STR("%s: M_FLUSH request (flush = %d)\n",
1691 		    proc, (int)*mp->b_rptr);
1692 		if (*mp->b_rptr & FLUSHW) {
1693 			flushq(wq, FLUSHALL);
1694 			*mp->b_rptr &= ~FLUSHW;
1695 		}
1696 		if (*mp->b_rptr & FLUSHR)
1697 			qreply(wq, mp);
1698 		else
1699 			freemsg(mp);
1700 		break;
1701 
1702 	default:
1703 		PR_STR("%s: unexpected DB_TYPE 0x%x\n",
1704 		    proc, DB_TYPE(mp));
1705 		freemsg(mp);
1706 		break;
1707 	}
1708 
1709 	return (0);
1710 }
1711 
1712 /*
1713  * ----------------------------------------------
1714  */
1715 static int
1716 idnwsrv(queue_t *wq)
1717 {
1718 	mblk_t		*mp;
1719 	int		err = 0;
1720 	struct idnstr	*stp;
1721 	struct idn	*sip;
1722 	procname_t	proc = "idnwsrv";
1723 
1724 	stp = (struct idnstr *)wq->q_ptr;
1725 	sip = stp->ss_sip;
1726 
1727 	while (mp = getq(wq)) {
1728 		switch (DB_TYPE(mp)) {
1729 		case M_DATA:
1730 			if (sip) {
1731 				PR_DLPI("%s: idndl_start(sip=0x%p)\n",
1732 				    proc, (void *)sip);
1733 				rw_enter(&stp->ss_rwlock, RW_READER);
1734 				err = idndl_start(wq, mp, sip);
1735 				rw_exit(&stp->ss_rwlock);
1736 				if (err)
1737 					goto done;
1738 			} else {
1739 				PR_DLPI("%s: NO sip to start msg\n", proc);
1740 				freemsg(mp);
1741 			}
1742 			break;
1743 
1744 		case M_PROTO:
1745 		case M_PCPROTO:
1746 			idndl_proto(wq, mp);
1747 			break;
1748 
1749 		default:
1750 			ASSERT(0);
1751 			PR_STR("%s: unexpected db_type (%d)\n",
1752 			    proc, DB_TYPE(mp));
1753 			freemsg(mp);
1754 			break;
1755 		}
1756 	}
1757 done:
1758 	return (0);
1759 }
1760 
1761 /*
1762  * ----------------------------------------------
1763  */
1764 static int
1765 idnrput(register queue_t *rq, register mblk_t *mp)
1766 {
1767 	register int	err = 0;
1768 	procname_t	proc = "idnrput";
1769 
1770 	switch (DB_TYPE(mp)) {
1771 	case M_DATA:
1772 		/*
1773 		 * Should not reach here with data packets
1774 		 * if running DLPI.
1775 		 */
1776 		cmn_err(CE_WARN,
1777 		    "IDN: 123: unexpected M_DATA packets for "
1778 		    "q_stream 0x%p", (void *)rq->q_stream);
1779 		freemsg(mp);
1780 		err = ENXIO;
1781 		break;
1782 
1783 	case M_FLUSH:
1784 		PR_STR("%s: M_FLUSH request (flush = %d)\n",
1785 		    proc, (int)*mp->b_rptr);
1786 		if (*mp->b_rptr & FLUSHR)
1787 			flushq(rq, FLUSHALL);
1788 		(void) putnext(rq, mp);
1789 		break;
1790 
1791 	case M_ERROR:
1792 		PR_STR("%s: M_ERROR (error = %d) coming through\n",
1793 		    proc, (int)*mp->b_rptr);
1794 		(void) putnext(rq, mp);
1795 		break;
1796 	default:
1797 		PR_STR("%s: unexpected DB_TYPE 0x%x\n",
1798 		    proc, DB_TYPE(mp));
1799 		freemsg(mp);
1800 		err = ENXIO;
1801 		break;
1802 	}
1803 
1804 	return (err);
1805 }
1806 
1807 /*
1808  * ----------------------------------------------
1809  * Not allowed to enqueue messages!  Only M_DATA messages
1810  * can be enqueued on the write stream.
1811  * ----------------------------------------------
1812  */
1813 static void
1814 idnioctl(register queue_t *wq, register mblk_t *mp)
1815 {
1816 	register struct iocblk	*iocp;
1817 	register int	cmd;
1818 	idnop_t		*idnop = NULL;
1819 	int		error = 0;
1820 	int		argsize;
1821 	procname_t	proc = "idnioctl";
1822 
1823 	iocp = (struct iocblk *)mp->b_rptr;
1824 	cmd  = iocp->ioc_cmd;
1825 
1826 	/*
1827 	 * Intercept DLPI ioctl's.
1828 	 */
1829 	if (VALID_DLPIOP(cmd)) {
1830 		PR_STR("%s: DLPI ioctl(%d)\n", proc, cmd);
1831 		error = idnioc_dlpi(wq, mp, &argsize);
1832 		goto done;
1833 	}
1834 
1835 	/*
1836 	 * Validate expected arguments.
1837 	 */
1838 	if (!VALID_IDNIOCTL(cmd)) {
1839 		PR_STR("%s: invalid cmd (0x%x)\n", proc, cmd);
1840 		error = EINVAL;
1841 		goto done;
1842 
1843 	} else if (!VALID_NDOP(cmd)) {
1844 		error = miocpullup(mp, sizeof (idnop_t));
1845 		if (error != 0) {
1846 			PR_STR("%s: idnioc(cmd = 0x%x) miocpullup "
1847 			    "failed (%d)\n", proc, cmd, error);
1848 			goto done;
1849 		}
1850 	}
1851 
1852 	argsize = mp->b_cont->b_wptr - mp->b_cont->b_rptr;
1853 	idnop = (idnop_t *)mp->b_cont->b_rptr;
1854 
1855 	switch (cmd) {
1856 	case IDNIOC_LINK:
1857 		error = idnioc_link(idnop);
1858 		break;
1859 
1860 	case IDNIOC_UNLINK:
1861 		error = idnioc_unlink(idnop);
1862 		break;
1863 
1864 	case IDNIOC_MEM_RW:
1865 		error = idn_rw_mem(idnop);
1866 		break;
1867 
1868 	case IDNIOC_PING:
1869 		error = idn_send_ping(idnop);
1870 		break;
1871 
1872 	case ND_SET:
1873 		IDN_GLOCK_EXCL();
1874 		if (!nd_getset(wq, idn_ndlist, mp)) {
1875 			IDN_GUNLOCK();
1876 			error = ENOENT;
1877 			break;
1878 		}
1879 		IDN_GUNLOCK();
1880 		qreply(wq, mp);
1881 		return;
1882 
1883 	case ND_GET:
1884 		IDN_GLOCK_SHARED();
1885 		if (!nd_getset(wq, idn_ndlist, mp)) {
1886 			IDN_GUNLOCK();
1887 			error = ENOENT;
1888 			break;
1889 		}
1890 		IDN_GUNLOCK();
1891 		qreply(wq, mp);
1892 		return;
1893 
1894 	default:
1895 		PR_STR("%s: invalid cmd 0x%x\n", proc, cmd);
1896 		error = EINVAL;
1897 		break;
1898 	}
1899 
1900 done:
1901 	if (error == 0)
1902 		miocack(wq, mp, argsize, 0);
1903 	else
1904 		miocnak(wq, mp, 0, error);
1905 }
1906 
1907 /*
1908  * This thread actually services the SSI_LINK/UNLINK calls
1909  * asynchronously that come via BBSRAM.  This is necessary
1910  * since we can't process them from within the context of
1911  * the interrupt handler in which idn_sigbhandler() is
1912  * called.
1913  */
1914 static void
1915 idn_sigbhandler_thread(struct sigbintr **sbpp)
1916 {
1917 	int		d, pri, rv;
1918 	struct sigbintr	*sbp;
1919 	sigbmbox_t	*mbp;
1920 	idn_fin_t	fintype;
1921 	idnsb_data_t	*sdp;
1922 	idnsb_info_t	*sfp;
1923 	idnsb_error_t	*sep;
1924 	idn_domain_t	*dp;
1925 	procname_t	proc = "idn_sigbhandler_thread";
1926 
1927 
1928 	sbp = *sbpp;
1929 
1930 	PR_PROTO("%s: KICKED OFF (sigbintr pointer = 0x%p)\n",
1931 	    proc, (void *)sbp);
1932 
1933 	ASSERT(sbp == &idn.sigbintr);
1934 
1935 	mutex_enter(&idn.sigbintr.sb_mutex);
1936 
1937 	while (sbp->sb_busy != IDNSIGB_DIE) {
1938 		cpu_sgnblk_t	*sigbp;
1939 
1940 		while ((sbp->sb_busy != IDNSIGB_ACTIVE) &&
1941 		    (sbp->sb_busy != IDNSIGB_DIE)) {
1942 			cv_wait(&sbp->sb_cv, &idn.sigbintr.sb_mutex);
1943 			PR_PROTO("%s: AWAKENED (busy = %d)\n",
1944 			    proc, (int)sbp->sb_busy);
1945 		}
1946 		if (sbp->sb_busy == IDNSIGB_DIE) {
1947 			PR_PROTO("%s: DIE REQUESTED\n", proc);
1948 			break;
1949 		}
1950 
1951 		if ((sigbp = cpu_sgnblkp[sbp->sb_cpuid]) == NULL) {
1952 			cmn_err(CE_WARN,
1953 			    "IDN: 124: sigblk for CPU ID %d "
1954 			    "is NULL", sbp->sb_cpuid);
1955 			sbp->sb_busy = IDNSIGB_INACTIVE;
1956 			continue;
1957 		}
1958 
1959 		mbp = &sigbp->sigb_host_mbox;
1960 
1961 		if (mbp->flag != SIGB_MBOX_BUSY) {
1962 			PR_PROTO("%s: sigblk mbox flag (%d) != BUSY (%d)\n",
1963 			    proc, mbp->flag, SIGB_MBOX_BUSY);
1964 			sbp->sb_busy = IDNSIGB_INACTIVE;
1965 			continue;
1966 		}
1967 		/*
1968 		 * The sb_busy bit is set and the mailbox flag
1969 		 * indicates BUSY also, so we effectively have things locked.
1970 		 * So, we can drop the critical sb_mutex which we want to
1971 		 * do since it pushes us to PIL 14 while we hold it and we
1972 		 * don't want to run at PIL 14 across IDN code.
1973 		 */
1974 		mutex_exit(&idn.sigbintr.sb_mutex);
1975 
1976 		sdp = (idnsb_data_t *)mbp->data;
1977 		sep = (idnsb_error_t *)&sdp->ssb_error;
1978 		INIT_IDNKERR(sep);
1979 
1980 		if (mbp->len != sizeof (idnsb_data_t)) {
1981 			PR_PROTO("%s: sigblk mbox length (%d) != "
1982 			    "expected (%lu)\n", proc, mbp->len,
1983 			    sizeof (idnsb_data_t));
1984 			SET_IDNKERR_ERRNO(sep, EINVAL);
1985 			SET_IDNKERR_IDNERR(sep, IDNKERR_DATA_LEN);
1986 			SET_IDNKERR_PARAM0(sep, sizeof (idnsb_data_t));
1987 
1988 			goto sberr;
1989 
1990 		}
1991 		if (idn.enabled == 0) {
1992 #ifdef DEBUG
1993 			cmn_err(CE_NOTE,
1994 			    "IDN: 102: driver disabled "
1995 			    "- check OBP environment "
1996 			    "(idn-smr-size)");
1997 #else /* DEBUG */
1998 			cmn_err(CE_NOTE,
1999 			    "!IDN: 102: driver disabled "
2000 			    "- check OBP environment "
2001 			    "(idn-smr-size)");
2002 #endif /* DEBUG */
2003 			SET_IDNKERR_ERRNO(sep, EACCES);
2004 			SET_IDNKERR_IDNERR(sep, IDNKERR_DRV_DISABLED);
2005 
2006 			goto sberr;
2007 
2008 		}
2009 
2010 		switch (mbp->cmd) {
2011 
2012 		case SSI_LINK:
2013 		{
2014 			idnsb_link_t	slp;
2015 
2016 			bcopy(&sdp->ssb_link, &slp, sizeof (slp));
2017 
2018 			if (slp.master_pri < 0) {
2019 				pri = IDNVOTE_MINPRI;
2020 			} else if (slp.master_pri > 0) {
2021 				/*
2022 				 * If I'm already in a IDN network,
2023 				 * then my vote priority is set to
2024 				 * the max, otherwise it's one-less.
2025 				 */
2026 				pri = IDNVOTE_MAXPRI;
2027 				IDN_GLOCK_SHARED();
2028 				if (idn.ndomains <= 1)
2029 					pri--;
2030 				IDN_GUNLOCK();
2031 			} else {
2032 				pri = IDNVOTE_DEFPRI;
2033 			}
2034 
2035 			PR_PROTO("%s: SSI_LINK(cpuid = %d, domid = %d, "
2036 			    "pri = %d (req = %d), t/o = %d)\n",
2037 			    proc, slp.cpuid, slp.domid, pri,
2038 			    slp.master_pri, slp.timeout);
2039 
2040 			rv = idn_link(slp.domid, slp.cpuid, pri,
2041 			    slp.timeout, sep);
2042 			SET_IDNKERR_ERRNO(sep, rv);
2043 			(void) idn_info(&sdp->ssb_info);
2044 			break;
2045 		}
2046 
2047 		case SSI_UNLINK:
2048 		{
2049 			idnsb_unlink_t	sup;
2050 			idn_domain_t	*xdp;
2051 			domainset_t	domset;
2052 
2053 			bcopy(&sdp->ssb_unlink, &sup, sizeof (sup));
2054 
2055 			PR_PROTO("%s: SSI_UNLINK(c = %d, d = %d, bs = 0x%x, "
2056 			    "f = %d, is = 0x%x, t/o = %d)\n",
2057 			    proc, sup.cpuid, sup.domid, sup.boardset,
2058 			    sup.force, sup.idnset, sup.timeout);
2059 
2060 			domset = idn.domset.ds_trans_on |
2061 			    idn.domset.ds_connected |
2062 			    idn.domset.ds_trans_off |
2063 			    idn.domset.ds_awol |
2064 			    idn.domset.ds_relink;
2065 
2066 			if (VALID_DOMAINID(sup.domid)) {
2067 				dp = &idn_domain[sup.domid];
2068 			} else if (VALID_CPUID(sup.cpuid)) {
2069 				for (d = 0; d < MAX_DOMAINS; d++) {
2070 					xdp = &idn_domain[d];
2071 
2072 					if ((xdp->dcpu == IDN_NIL_DCPU) &&
2073 					    !DOMAIN_IN_SET(domset, d))
2074 						continue;
2075 
2076 					if (CPU_IN_SET(xdp->dcpuset,
2077 					    sup.cpuid))
2078 						break;
2079 				}
2080 				dp = (d == MAX_DOMAINS) ? NULL : xdp;
2081 			}
2082 			if ((dp == NULL) && sup.boardset) {
2083 				for (d = 0; d < MAX_DOMAINS; d++) {
2084 					xdp = &idn_domain[d];
2085 
2086 					if ((xdp->dcpu == IDN_NIL_DCPU) &&
2087 					    !DOMAIN_IN_SET(domset, d))
2088 						continue;
2089 
2090 					if (xdp->dhw.dh_boardset &
2091 					    sup.boardset)
2092 						break;
2093 				}
2094 				dp = (d == MAX_DOMAINS) ? NULL : xdp;
2095 			}
2096 			if (dp == NULL) {
2097 				SET_IDNKERR_ERRNO(sep, EINVAL);
2098 				SET_IDNKERR_IDNERR(sep, IDNKERR_INVALID_DOMAIN);
2099 				SET_IDNKERR_PARAM0(sep, sup.domid);
2100 				SET_IDNKERR_PARAM1(sep, sup.cpuid);
2101 				(void) idn_info(&sdp->ssb_info);
2102 				goto sberr;
2103 			} else {
2104 				sup.domid = dp->domid;
2105 			}
2106 
2107 			switch (sup.force) {
2108 			case SSIFORCE_OFF:
2109 				fintype = IDNFIN_NORMAL;
2110 				break;
2111 
2112 			case SSIFORCE_SOFT:
2113 				fintype = IDNFIN_FORCE_SOFT;
2114 				break;
2115 
2116 			case SSIFORCE_HARD:
2117 				fintype = IDNFIN_FORCE_HARD;
2118 				break;
2119 			default:
2120 				SET_IDNKERR_ERRNO(sep, EINVAL);
2121 				SET_IDNKERR_IDNERR(sep, IDNKERR_INVALID_FORCE);
2122 				SET_IDNKERR_PARAM0(sep, sup.force);
2123 				(void) idn_info(&sdp->ssb_info);
2124 				goto sberr;
2125 			}
2126 
2127 			rv = idn_unlink(sup.domid, sup.idnset, fintype,
2128 			    IDNFIN_OPT_UNLINK, sup.timeout, sep);
2129 			SET_IDNKERR_ERRNO(sep, rv);
2130 			(void) idn_info(&sdp->ssb_info);
2131 			break;
2132 		}
2133 
2134 		case SSI_INFO:
2135 			sfp = &sdp->ssb_info;
2136 
2137 			PR_PROTO("%s: SSI_INFO\n", proc);
2138 
2139 			rv = idn_info(sfp);
2140 			SET_IDNKERR_ERRNO(sep, rv);
2141 			if (rv != 0) {
2142 				SET_IDNKERR_IDNERR(sep, IDNKERR_INFO_FAILED);
2143 			}
2144 			break;
2145 
2146 		default:
2147 			ASSERT(0);
2148 			SET_IDNKERR_ERRNO(sep, EINVAL);
2149 			SET_IDNKERR_IDNERR(sep, IDNKERR_INVALID_CMD);
2150 			SET_IDNKERR_PARAM0(sep, mbp->cmd);
2151 			break;
2152 		}
2153 
2154 sberr:
2155 
2156 		if (GET_IDNKERR_ERRNO(sep) != 0) {
2157 			cmn_err(CE_WARN,
2158 #ifdef DEBUG
2159 			    "IDN: 125: op (%s) failed, returning "
2160 			    "(%d/0x%x [%d, %d, %d])",
2161 #else /* DEBUG */
2162 			    "!IDN: 125: op (%s) failed, returning "
2163 			    "(%d/0x%x [%d, %d, %d])",
2164 #endif /* DEBUG */
2165 			    (mbp->cmd == SSI_LINK) ? "LINK" :
2166 			    (mbp->cmd == SSI_UNLINK) ? "UNLINK" :
2167 			    (mbp->cmd == SSI_INFO) ?
2168 			    "INFO" : "UNKNOWN",
2169 			    GET_IDNKERR_ERRNO(sep),
2170 			    GET_IDNKERR_IDNERR(sep),
2171 			    GET_IDNKERR_PARAM0(sep),
2172 			    GET_IDNKERR_PARAM1(sep),
2173 			    GET_IDNKERR_PARAM2(sep));
2174 		}
2175 
2176 		PR_PROTO("%s: returning errno = %d, idnerr = %d, "
2177 		    "params = [%d, %d, %d]\n",
2178 		    proc, GET_IDNKERR_ERRNO(sep), GET_IDNKERR_IDNERR(sep),
2179 		    GET_IDNKERR_PARAM0(sep), GET_IDNKERR_PARAM1(sep),
2180 		    GET_IDNKERR_PARAM2(sep));
2181 
2182 		mutex_enter(&idn.sigbintr.sb_mutex);
2183 		ASSERT((sbp->sb_busy == IDNSIGB_ACTIVE) ||
2184 		    (sbp->sb_busy == IDNSIGB_DIE));
2185 		mbp->cmd |= SSI_ACK;
2186 		if (sbp->sb_busy == IDNSIGB_ACTIVE)
2187 			sbp->sb_busy = IDNSIGB_INACTIVE;
2188 		/*
2189 		 * Set flag which kicks off response to SSP.
2190 		 */
2191 		membar_stst_ldst();
2192 		mbp->flag = HOST_TO_CBS;
2193 	}
2194 
2195 	/*
2196 	 * Wake up the dude that killed us!
2197 	 */
2198 	idn.sigb_threadp = NULL;
2199 	cv_signal(&sbp->sb_cv);
2200 	mutex_exit(&idn.sigbintr.sb_mutex);
2201 	thread_exit();
2202 }
2203 
2204 /*
2205  * Create the thread that will service sigb interrupts.
2206  */
2207 static void
2208 idn_sigbhandler_create()
2209 {
2210 	struct sigbintr	*sbp;
2211 
2212 	if (idn.sigb_threadp) {
2213 		cmn_err(CE_WARN,
2214 		    "IDN: 126: sigbhandler thread already "
2215 		    "exists (0x%p)", (void *)idn.sigb_threadp);
2216 		return;
2217 	}
2218 	cv_init(&idn.sigbintr.sb_cv, NULL, CV_DEFAULT, NULL);
2219 	sbp = &idn.sigbintr;
2220 	sbp->sb_busy = IDNSIGB_INACTIVE;
2221 	idn.sigb_threadp = thread_create(NULL, 0,
2222 	    idn_sigbhandler_thread, &sbp, sizeof (sbp), &p0,
2223 	    TS_RUN, minclsyspri);
2224 	sbp->sb_inum = add_softintr((uint_t)idn_sigbpil,
2225 	    idn_sigbhandler_wakeup, 0, SOFTINT_ST);
2226 }
2227 
2228 static void
2229 idn_sigbhandler_kill()
2230 {
2231 	if (idn.sigb_threadp) {
2232 		struct sigbintr	*sbp;
2233 
2234 		sbp = &idn.sigbintr;
2235 		if (sbp->sb_inum != 0)
2236 			(void) rem_softintr(sbp->sb_inum);
2237 		sbp->sb_inum = 0;
2238 		sbp->sb_busy = IDNSIGB_DIE;
2239 		cv_signal(&sbp->sb_cv);
2240 		while (idn.sigb_threadp != NULL)
2241 			cv_wait(&sbp->sb_cv, &idn.sigbintr.sb_mutex);
2242 		sbp->sb_busy = IDNSIGB_INACTIVE;
2243 		cv_destroy(&sbp->sb_cv);
2244 	}
2245 }
2246 
2247 /*ARGSUSED0*/
2248 static uint_t
2249 idn_sigbhandler_wakeup(caddr_t arg1, caddr_t arg2)
2250 {
2251 	mutex_enter(&idn.sigbintr.sb_mutex);
2252 	if (idn.sigbintr.sb_busy == IDNSIGB_STARTED) {
2253 		idn.sigbintr.sb_busy = IDNSIGB_ACTIVE;
2254 		cv_signal(&idn.sigbintr.sb_cv);
2255 	}
2256 	mutex_exit(&idn.sigbintr.sb_mutex);
2257 
2258 	return (DDI_INTR_CLAIMED);
2259 }
2260 
2261 static void
2262 idn_sigbhandler(processorid_t cpuid, cpu_sgnblk_t *sgnblkp)
2263 {
2264 	struct sigbintr	*sbp = &idn.sigbintr;
2265 	sigbmbox_t	*mbp;
2266 	idnsb_data_t	*sdp;
2267 	idnsb_error_t	*sep;
2268 	uint32_t	cmd;
2269 	int		sigb_lock = 0;
2270 
2271 	ASSERT(sgnblkp);
2272 
2273 	mbp = &sgnblkp->sigb_host_mbox;
2274 	sdp = (idnsb_data_t *)mbp->data;
2275 	sep = &sdp->ssb_error;
2276 	cmd = mbp->cmd;
2277 
2278 	if ((mbp->flag != CBS_TO_HOST) || !VALID_IDNSIGBCMD(cmd)) {
2279 		/*
2280 		 * Not a valid IDN command.  Just bail out.
2281 		 */
2282 		return;
2283 	}
2284 
2285 	mbp->flag = SIGB_MBOX_BUSY;
2286 	SET_IDNKERR_ERRNO(sep, 0);
2287 
2288 	if (cmd & SSI_ACK) {
2289 		/*
2290 		 * Hmmm...weird, the ACK bit is set.
2291 		 */
2292 		SET_IDNKERR_ERRNO(sep, EPROTO);
2293 		SET_IDNKERR_IDNERR(sep, IDNKERR_INVALID_CMD);
2294 		SET_IDNKERR_PARAM0(sep, cmd);
2295 		goto sigb_done;
2296 	}
2297 
2298 	if (!mutex_tryenter(&idn.sigbintr.sb_mutex)) {
2299 		/*
2300 		 * Couldn't get the lock.  Driver is either
2301 		 * not quite all the way up or is shutting down
2302 		 * for some reason.  Caller should spin again.
2303 		 */
2304 		cmd |= SSI_ACK;
2305 		SET_IDNKERR_ERRNO(sep, EBUSY);
2306 		SET_IDNKERR_IDNERR(sep, IDNKERR_SIGBINTR_LOCKED);
2307 		goto sigb_done;
2308 	}
2309 	sigb_lock = 1;
2310 
2311 	if ((idn.sigb_threadp == NULL) ||
2312 	    (sbp->sb_busy == IDNSIGB_NOTREADY)) {
2313 		cmd |= SSI_ACK;
2314 		SET_IDNKERR_ERRNO(sep, EAGAIN);
2315 		SET_IDNKERR_IDNERR(sep, IDNKERR_SIGBINTR_NOTRDY);
2316 		goto sigb_done;
2317 	}
2318 
2319 	if (sbp->sb_busy != IDNSIGB_INACTIVE) {
2320 		cmd |= SSI_ACK;
2321 		SET_IDNKERR_ERRNO(sep, EBUSY);
2322 		SET_IDNKERR_IDNERR(sep, IDNKERR_SIGBINTR_BUSY);
2323 		goto sigb_done;
2324 	}
2325 
2326 	sbp->sb_cpuid = (uchar_t)cpuid & 0xff;
2327 	membar_stst_ldst();
2328 	sbp->sb_busy = IDNSIGB_STARTED;
2329 	/*
2330 	 * The sb_busy bit is set and the mailbox flag
2331 	 * indicates BUSY also, so we effectively have things locked.
2332 	 * So, we can drop the critical sb_mutex which we want to
2333 	 * do since it pushes us to PIL 14 while we hold it and we
2334 	 * don't want to run at PIL 14 across IDN code.
2335 	 *
2336 	 * Send interrupt to cause idn_sigbhandler_thread to wakeup.
2337 	 * We cannot do wakeup (cv_signal) directly from here since
2338 	 * we're executing from a high-level (14) interrupt.
2339 	 */
2340 	setsoftint(sbp->sb_inum);
2341 
2342 sigb_done:
2343 
2344 	if (GET_IDNKERR_ERRNO(sep) != 0) {
2345 		mbp->len = sizeof (idnsb_data_t);
2346 		mbp->cmd = cmd;
2347 		membar_stst_ldst();
2348 		mbp->flag = HOST_TO_CBS;
2349 	}
2350 
2351 	if (sigb_lock)
2352 		mutex_exit(&idn.sigbintr.sb_mutex);
2353 }
2354 
2355 static int
2356 idn_info(idnsb_info_t *sfp)
2357 {
2358 	int		count, d;
2359 	idn_domain_t	*dp;
2360 	idnsb_info_t	sinfo;
2361 	int		local_id, master_id;
2362 	procname_t	proc = "idn_info";
2363 
2364 	bzero(&sinfo, sizeof (sinfo));
2365 	sinfo.master_index = (uchar_t)-1;
2366 	sinfo.master_cpuid = (uchar_t)-1;
2367 	sinfo.local_index  = (uchar_t)-1;
2368 	sinfo.local_cpuid  = (uchar_t)-1;
2369 
2370 	IDN_GLOCK_SHARED();
2371 
2372 	sinfo.idn_state = (uchar_t)idn.state;
2373 
2374 	switch (idn.state) {
2375 	case IDNGS_OFFLINE:
2376 		sinfo.idn_active = SSISTATE_INACTIVE;
2377 		PR_PROTO("%s: idn_state (%s) = INACTIVE\n",
2378 		    proc, idngs_str[idn.state]);
2379 		break;
2380 
2381 	case IDNGS_IGNORE:
2382 		PR_PROTO("%s: IGNORING IDN_INFO call...\n", proc);
2383 		IDN_GUNLOCK();
2384 		return (EIO);
2385 
2386 	default:
2387 		sinfo.idn_active = SSISTATE_ACTIVE;
2388 		PR_PROTO("%s: idn_state (%s) = ACTIVE\n",
2389 		    proc, idngs_str[idn.state]);
2390 		break;
2391 	}
2392 	master_id = IDN_GET_MASTERID();
2393 	local_id = idn.localid;
2394 
2395 	/*
2396 	 * Need to drop idn.grwlock before acquiring domain locks.
2397 	 */
2398 	IDN_GUNLOCK();
2399 
2400 	IDN_SYNC_LOCK();
2401 
2402 	sinfo.awol_domset = (ushort_t)idn.domset.ds_awol;
2403 	sinfo.conn_domset = (ushort_t)(idn.domset.ds_connected &
2404 	    ~idn.domset.ds_trans_on);
2405 	DOMAINSET_ADD(sinfo.conn_domset, idn.localid);
2406 
2407 	count = 0;
2408 	for (d = 0; d < MAX_DOMAINS; d++) {
2409 		dp = &idn_domain[d];
2410 
2411 		if (dp->dcpu == IDN_NIL_DCPU)
2412 			continue;
2413 
2414 		IDN_DLOCK_SHARED(d);
2415 		if ((dp->dcpu == IDN_NIL_DCPU) ||
2416 		    (dp->dstate == IDNDS_CLOSED)) {
2417 			IDN_DUNLOCK(d);
2418 			continue;
2419 		}
2420 
2421 		count++;
2422 		if (d == local_id) {
2423 			sinfo.local_index = (uchar_t)d;
2424 			sinfo.local_cpuid = (uchar_t)dp->dcpu;
2425 			PR_PROTO("%s: domid %d is LOCAL (cpuid = %d)\n",
2426 			    proc, d, dp->dcpu);
2427 		}
2428 		if (d == master_id) {
2429 			sinfo.master_index = (uchar_t)d;
2430 			sinfo.master_cpuid = (uchar_t)dp->dcpu;
2431 			PR_PROTO("%s: domid %d is MASTER (cpuid = %d)\n",
2432 			    proc, d, dp->dcpu);
2433 		}
2434 
2435 		sinfo.domain_boardset[d] = (ushort_t)dp->dhw.dh_boardset;
2436 
2437 		IDN_DUNLOCK(d);
2438 	}
2439 
2440 	IDN_SYNC_UNLOCK();
2441 
2442 	bcopy(&sinfo, sfp, sizeof (*sfp));
2443 
2444 	PR_PROTO("%s: Found %d domains within IDNnet\n", proc, count);
2445 
2446 	return (0);
2447 }
2448 
2449 /*
2450  * ----------------------------------------------
2451  * ndd param support routines.
2452  * - Borrowed from tcp.
2453  * ----------------------------------------------
2454  */
2455 static void
2456 idn_param_cleanup()
2457 {
2458 	IDN_GLOCK_EXCL();
2459 	if (!idn.strup && idn_ndlist)
2460 		nd_free(&idn_ndlist);
2461 	IDN_GUNLOCK();
2462 }
2463 
2464 /*ARGSUSED*/
2465 static int
2466 idn_param_get(queue_t *q, mblk_t *mp, caddr_t cp, cred_t *cr)
2467 {
2468 	idnparam_t	*idnpa = (idnparam_t *)cp;
2469 
2470 	/*
2471 	 * lock grabbed before calling nd_getset.
2472 	 */
2473 	ASSERT(IDN_GLOCK_IS_HELD());
2474 
2475 	(void) mi_mpprintf(mp, "%ld", idnpa->sp_val);
2476 
2477 	return (0);
2478 }
2479 
2480 /*ARGSUSED*/
2481 static int
2482 idn_param_set(queue_t *q, mblk_t *mp, char *value, caddr_t cp, cred_t *cr)
2483 {
2484 	char		*end;
2485 	ulong_t		new_value;
2486 	idnparam_t	*idnpa = (idnparam_t *)cp;
2487 
2488 	/*
2489 	 * lock grabbed before calling nd_getset.
2490 	 */
2491 	ASSERT(IDN_GLOCK_IS_EXCL());
2492 
2493 	new_value = (ulong_t)mi_strtol(value, &end, 10);
2494 
2495 	if ((end == value) ||
2496 	    (new_value < idnpa->sp_min) ||
2497 	    (new_value > idnpa->sp_max))
2498 		return (EINVAL);
2499 
2500 	if (idn.enabled == 0) {
2501 #ifdef DEBUG
2502 		cmn_err(CE_NOTE,
2503 		    "IDN: 102: driver disabled "
2504 		    "- check OBP environment "
2505 		    "(idn-smr-size)");
2506 #else /* DEBUG */
2507 		cmn_err(CE_NOTE,
2508 		    "!IDN: 102: driver disabled "
2509 		    "- check OBP environment "
2510 		    "(idn-smr-size)");
2511 #endif /* DEBUG */
2512 		return (EACCES);
2513 	}
2514 
2515 	idnpa->sp_val = new_value;
2516 
2517 	return (0);
2518 }
2519 
2520 static int
2521 idn_param_register(register idnparam_t *idnpa, int count)
2522 {
2523 	ASSERT(IDN_GLOCK_IS_EXCL());
2524 
2525 	for (; count > 0; count--, idnpa++) {
2526 		if (idnpa->sp_name && idnpa->sp_name[0]) {
2527 			register int	i;
2528 			ndsetf_t	set_func;
2529 			char		*p;
2530 			/*
2531 			 * Don't advertise in non-DEBUG parameters.
2532 			 */
2533 			for (i = 0; idn_param_debug_only[i]; i++) {
2534 				p = idn_param_debug_only[i];
2535 				if (strcmp(idnpa->sp_name, p) == 0)
2536 					break;
2537 			}
2538 			if (idn_param_debug_only[i])
2539 				continue;
2540 
2541 			/*
2542 			 * Do not register a "set" function for
2543 			 * read-only parameters.
2544 			 */
2545 			for (i = 0; idn_param_read_only[i]; i++) {
2546 				p = idn_param_read_only[i];
2547 				if (strcmp(idnpa->sp_name, p) == 0)
2548 					break;
2549 			}
2550 			if (idn_param_read_only[i])
2551 				set_func = NULL;
2552 			else
2553 				set_func = idn_param_set;
2554 
2555 			if (!nd_load(&idn_ndlist, idnpa->sp_name,
2556 			    idn_param_get, set_func,
2557 			    (caddr_t)idnpa)) {
2558 				nd_free(&idn_ndlist);
2559 				return (-1);
2560 			}
2561 		}
2562 	}
2563 	if (!nd_load(&idn_ndlist, "idn_slabpool", idn_slabpool_report,
2564 	    NULL, NULL)) {
2565 		nd_free(&idn_ndlist);
2566 		return (-1);
2567 	}
2568 	if (!nd_load(&idn_ndlist, "idn_buffers", idn_buffer_report,
2569 	    NULL, NULL)) {
2570 		nd_free(&idn_ndlist);
2571 		return (-1);
2572 	}
2573 	if (!nd_load(&idn_ndlist, "idn_mboxtbl", idn_mboxtbl_report,
2574 	    NULL, MBXTBL_PART_REPORT)) {
2575 		nd_free(&idn_ndlist);
2576 		return (-1);
2577 	}
2578 	if (!nd_load(&idn_ndlist, "idn_mboxtbl_all", idn_mboxtbl_report,
2579 	    NULL, MBXTBL_FULL_REPORT)) {
2580 		nd_free(&idn_ndlist);
2581 		return (-1);
2582 	}
2583 	if (!nd_load(&idn_ndlist, "idn_mainmbox", idn_mainmbox_report,
2584 	    NULL, NULL)) {
2585 		nd_free(&idn_ndlist);
2586 		return (-1);
2587 	}
2588 	if (!nd_load(&idn_ndlist, "idn_global", idn_global_report,
2589 	    NULL, NULL)) {
2590 		nd_free(&idn_ndlist);
2591 		return (-1);
2592 	}
2593 	if (!nd_load(&idn_ndlist, "idn_domain", idn_domain_report,
2594 	    NULL, (caddr_t)0)) {
2595 		nd_free(&idn_ndlist);
2596 		return (-1);
2597 	}
2598 	if (!nd_load(&idn_ndlist, "idn_domain_all", idn_domain_report,
2599 	    NULL, (caddr_t)1)) {
2600 		nd_free(&idn_ndlist);
2601 		return (-1);
2602 	}
2603 	if (!nd_load(&idn_ndlist, "idn_bind_net", idn_get_net_binding,
2604 	    idn_set_net_binding, NULL)) {
2605 		nd_free(&idn_ndlist);
2606 		return (-1);
2607 	}
2608 
2609 	return (0);
2610 }
2611 
2612 /*ARGSUSED*/
2613 static int
2614 idn_set_net_binding(queue_t *q, mblk_t *mp, char *value, caddr_t cp, cred_t *cr)
2615 {
2616 	char		*end, *cpup;
2617 	long		net;
2618 	processorid_t	cpuid;
2619 
2620 	/*
2621 	 * lock grabbed before calling nd_getset.
2622 	 */
2623 	ASSERT(IDN_GLOCK_IS_EXCL());
2624 
2625 	if ((cpup = strchr(value, '=')) == NULL)
2626 		return (EINVAL);
2627 
2628 	*cpup++ = '\0';
2629 
2630 	net = mi_strtol(value, &end, 10);
2631 	if ((end == value) || (net < 0) || (net >= IDN_MAX_NETS) ||
2632 	    !CHAN_IN_SET(idn.chanset, net))
2633 		return (EINVAL);
2634 
2635 	cpuid = (processorid_t)mi_strtol(cpup, &end, 10);
2636 	if ((end == cpup) || ((cpuid != -1) &&
2637 	    (!VALID_CPUID(cpuid) ||
2638 	    !CPU_IN_SET(cpu_ready_set, cpuid))))
2639 		return (EINVAL);
2640 
2641 	idn_chanserver_bind(net, cpuid);
2642 
2643 	return (0);
2644 }
2645 
2646 /*ARGSUSED*/
2647 static int
2648 idn_get_net_binding(queue_t *q, mblk_t *mp, caddr_t cp, cred_t *cr)
2649 {
2650 	int	c;
2651 
2652 	/*
2653 	 * lock grabbed before calling nd_getset.
2654 	 */
2655 	ASSERT(IDN_GLOCK_IS_HELD());
2656 
2657 	(void) mi_mpprintf(mp,
2658 	    "IDN network interfaces/channels active = %d",
2659 	    idn.nchannels);
2660 
2661 	if (idn.nchannels == 0)
2662 		return (0);
2663 
2664 	(void) mi_mpprintf(mp, "Net    Cpu");
2665 
2666 	for (c = 0; c < IDN_MAX_NETS; c++) {
2667 		int		bc;
2668 		idn_chansvr_t	*csp;
2669 
2670 		if (!CHAN_IN_SET(idn.chanset, c))
2671 			continue;
2672 
2673 		csp = &idn.chan_servers[c];
2674 
2675 		if ((bc = csp->ch_bound_cpuid) == -1)
2676 			bc = csp->ch_bound_cpuid_pending;
2677 
2678 		if (c < 10)
2679 			(void) mi_mpprintf(mp, " %d      %d", c, bc);
2680 		else
2681 			(void) mi_mpprintf(mp, " %d     %d", c, bc);
2682 	}
2683 
2684 	return (0);
2685 }
2686 
2687 static int
2688 idnioc_link(idnop_t *idnop)
2689 {
2690 	int		rv;
2691 	int		pri;
2692 	idnsb_error_t	err;
2693 	procname_t	proc = "idnioc_link";
2694 
2695 	if (idnop->link.master < 0)
2696 		pri = IDNVOTE_MINPRI;
2697 	else if (idnop->link.master > 0)
2698 		pri = IDNVOTE_MAXPRI;
2699 	else
2700 		pri = IDNVOTE_DEFPRI;
2701 
2702 	PR_DRV("%s: domid = %d, cpuid = %d, pri = %d\n",
2703 	    proc, idnop->link.domid, idnop->link.cpuid, pri);
2704 
2705 	rv = idn_link(idnop->link.domid, idnop->link.cpuid,
2706 	    pri, idnop->link.wait, &err);
2707 
2708 	return (rv);
2709 }
2710 
2711 static int
2712 idnioc_unlink(idnop_t *idnop)
2713 {
2714 	int		d, cpuid, domid, rv;
2715 	boardset_t	idnset;
2716 	idn_fin_t	fintype;
2717 	idn_domain_t	*dp, *xdp;
2718 	idnsb_error_t	err;
2719 	procname_t	proc = "idnioc_unlink";
2720 
2721 	PR_DRV("%s: domid = %d, cpuid = %d, force = %d\n",
2722 	    proc, idnop->unlink.domid, idnop->unlink.cpuid,
2723 	    idnop->unlink.force);
2724 
2725 	idnset = BOARDSET_ALL;
2726 	domid = idnop->unlink.domid;
2727 	cpuid = idnop->unlink.cpuid;
2728 	dp = NULL;
2729 
2730 	if (domid == IDN_NIL_DOMID)
2731 		domid = idn.localid;
2732 
2733 	if (VALID_DOMAINID(domid)) {
2734 		dp = &idn_domain[domid];
2735 		if (VALID_CPUID(cpuid) && (dp->dcpu != IDN_NIL_DCPU) &&
2736 		    !CPU_IN_SET(dp->dcpuset, cpuid)) {
2737 			dp = NULL;
2738 			PR_PROTO("%s: ERROR: invalid cpuid "
2739 			    "(%d) for domain (%d) [cset = 0x%x.x%x]\n",
2740 			    proc, cpuid, domid,
2741 			    UPPER32_CPUMASK(dp->dcpuset),
2742 			    LOWER32_CPUMASK(dp->dcpuset));
2743 		}
2744 	} else if (VALID_CPUID(cpuid)) {
2745 		for (d = 0; d < MAX_DOMAINS; d++) {
2746 			xdp = &idn_domain[d];
2747 
2748 			if (xdp->dcpu == IDN_NIL_DCPU)
2749 				continue;
2750 
2751 			if (CPU_IN_SET(xdp->dcpuset, cpuid))
2752 				break;
2753 		}
2754 		dp = (d == MAX_DOMAINS) ? NULL : xdp;
2755 	}
2756 
2757 	if ((dp == NULL) || (dp->dcpu == IDN_NIL_DCPU))
2758 		return (0);
2759 
2760 	domid = dp->domid;
2761 
2762 	switch (idnop->unlink.force) {
2763 	case SSIFORCE_OFF:
2764 		fintype = IDNFIN_NORMAL;
2765 		break;
2766 
2767 	case SSIFORCE_SOFT:
2768 		fintype = IDNFIN_FORCE_SOFT;
2769 		break;
2770 
2771 	case SSIFORCE_HARD:
2772 		fintype = IDNFIN_FORCE_HARD;
2773 		break;
2774 	default:
2775 		PR_PROTO("%s: invalid force parameter \"%d\"",
2776 		    proc, idnop->unlink.force);
2777 		return (EINVAL);
2778 	}
2779 
2780 	rv = idn_unlink(domid, idnset, fintype, IDNFIN_OPT_UNLINK,
2781 	    idnop->unlink.wait, &err);
2782 
2783 	return (rv);
2784 }
2785 
2786 static int
2787 idn_send_ping(idnop_t *idnop)
2788 {
2789 	int		domid = idnop->ping.domid;
2790 	int		cpuid = idnop->ping.cpuid;
2791 	int		ocpuid;
2792 	idn_domain_t	*dp;
2793 	idn_msgtype_t	mt;
2794 	procname_t	proc = "idn_send_ping";
2795 
2796 	if ((domid == IDN_NIL_DOMID) && (cpuid == IDN_NIL_DCPU)) {
2797 		cmn_err(CE_WARN,
2798 		    "IDN: %s: no valid domain ID or CPU ID given",
2799 		    proc);
2800 		return (EINVAL);
2801 	}
2802 	if (domid == IDN_NIL_DOMID)
2803 		domid = MAX_DOMAINS - 1;
2804 
2805 	dp = &idn_domain[domid];
2806 	IDN_DLOCK_EXCL(domid);
2807 	if ((dp->dcpu == IDN_NIL_DCPU) && (cpuid == IDN_NIL_DCPU)) {
2808 		cmn_err(CE_WARN,
2809 		    "IDN: %s: no valid target CPU specified",
2810 		    proc);
2811 		IDN_DUNLOCK(domid);
2812 		return (EINVAL);
2813 	}
2814 	if (cpuid == IDN_NIL_DCPU)
2815 		cpuid = dp->dcpu;
2816 
2817 	ocpuid = dp->dcpu;
2818 	dp->dcpu = cpuid;
2819 
2820 	/*
2821 	 * XXX - Need a special PING IDN command.
2822 	 */
2823 	mt.mt_mtype = IDNP_DATA | IDNP_ACK;
2824 	mt.mt_atype = 0;
2825 
2826 	(void) IDNXDC(domid, &mt, 0x100, 0x200, 0x300, 0x400);
2827 
2828 	dp->dcpu = ocpuid;
2829 	IDN_DUNLOCK(domid);
2830 
2831 	return (0);
2832 }
2833 
2834 /*
2835  * ----------------------------------------------
2836  */
2837 static void
2838 idn_dopers_init()
2839 {
2840 	int		i;
2841 	dop_waitlist_t	*dwl;
2842 
2843 	if (idn.dopers)
2844 		return;
2845 
2846 	idn.dopers = GETSTRUCT(struct dopers, 1);
2847 
2848 	bzero(idn.dopers, sizeof (struct dopers));
2849 
2850 	dwl = &idn.dopers->_dop_wcache[0];
2851 	for (i = 0; i < (IDNOP_CACHE_SIZE-1); i++)
2852 		dwl[i].dw_next = &dwl[i+1];
2853 	dwl[i].dw_next = NULL;
2854 
2855 	idn.dopers->dop_freelist = &idn.dopers->_dop_wcache[0];
2856 	idn.dopers->dop_waitcount = 0;
2857 	idn.dopers->dop_domset = 0;
2858 	idn.dopers->dop_waitlist = NULL;
2859 
2860 	cv_init(&idn.dopers->dop_cv, NULL, CV_DEFAULT, NULL);
2861 	mutex_init(&idn.dopers->dop_mutex, NULL, MUTEX_DEFAULT, NULL);
2862 }
2863 
2864 static void
2865 idn_dopers_deinit()
2866 {
2867 	dop_waitlist_t	*dwl, *next_dwl;
2868 
2869 
2870 	if (idn.dopers == NULL)
2871 		return;
2872 
2873 	for (dwl = idn.dopers->dop_waitlist; dwl; dwl = next_dwl) {
2874 		next_dwl = dwl->dw_next;
2875 		if (!IDNOP_IN_CACHE(dwl))
2876 			FREESTRUCT(dwl, dop_waitlist_t, 1);
2877 	}
2878 
2879 	cv_destroy(&idn.dopers->dop_cv);
2880 	mutex_destroy(&idn.dopers->dop_mutex);
2881 
2882 	FREESTRUCT(idn.dopers, struct dopers, 1);
2883 	idn.dopers = NULL;
2884 }
2885 
2886 /*
2887  * Reset the dop_errset field in preparation for an
2888  * IDN operation attempt.  This is only called from
2889  * idn_link() and idn_unlink().
2890  */
2891 void *
2892 idn_init_op(idn_opflag_t opflag, domainset_t domset, idnsb_error_t *sep)
2893 {
2894 	dop_waitlist_t	*dwl;
2895 	/*
2896 	 * Clear any outstanding error ops in preparation
2897 	 * for an IDN (link/unlink) operation.
2898 	 */
2899 	mutex_enter(&idn.dopers->dop_mutex);
2900 	if ((dwl = idn.dopers->dop_freelist) == NULL) {
2901 		dwl = GETSTRUCT(dop_waitlist_t, 1);
2902 	} else {
2903 		idn.dopers->dop_freelist = dwl->dw_next;
2904 		bzero(dwl, sizeof (*dwl));
2905 	}
2906 	dwl->dw_op = opflag;
2907 	dwl->dw_reqset = domset;
2908 	dwl->dw_idnerr = sep;
2909 	dwl->dw_next = idn.dopers->dop_waitlist;
2910 
2911 	idn.dopers->dop_waitlist = dwl;
2912 	idn.dopers->dop_waitcount++;
2913 	idn.dopers->dop_domset |= domset;
2914 	mutex_exit(&idn.dopers->dop_mutex);
2915 
2916 	return (dwl);
2917 }
2918 
2919 /*
2920  * Anybody waiting on a opflag operation for any one
2921  * of the domains in domset, needs to be updated to
2922  * additionally wait for new domains in domset.
2923  * This is used, for example, when needing to connect
2924  * to more domains than known at the time of the
2925  * original request.
2926  */
2927 void
2928 idn_add_op(idn_opflag_t opflag, domainset_t domset)
2929 {
2930 	dop_waitlist_t	*dwl;
2931 
2932 	mutex_enter(&idn.dopers->dop_mutex);
2933 	if ((idn.dopers->dop_waitcount == 0) ||
2934 	    ((idn.dopers->dop_domset & domset) == 0)) {
2935 		mutex_exit(&idn.dopers->dop_mutex);
2936 		return;
2937 	}
2938 	for (dwl = idn.dopers->dop_waitlist; dwl; dwl = dwl->dw_next)
2939 		if ((dwl->dw_op == opflag) && (dwl->dw_reqset & domset))
2940 			dwl->dw_reqset |= domset;
2941 	mutex_exit(&idn.dopers->dop_mutex);
2942 }
2943 
2944 /*
2945  * Mechanism to wakeup any potential users which may be waiting
2946  * for a link/unlink operation to complete.  If an error occurred
2947  * don't update dop_errset unless there was no previous error.
2948  */
2949 void
2950 idn_update_op(idn_opflag_t opflag, domainset_t domset, idnsb_error_t *sep)
2951 {
2952 	int		do_wakeup = 0;
2953 	dop_waitlist_t	*dw;
2954 	procname_t	proc = "idn_update_op";
2955 
2956 	mutex_enter(&idn.dopers->dop_mutex);
2957 	/*
2958 	 * If there are no waiters, or nobody is waiting for
2959 	 * the particular domainset in question, then
2960 	 * just bail.
2961 	 */
2962 	if ((idn.dopers->dop_waitcount == 0) ||
2963 	    ((idn.dopers->dop_domset & domset) == 0)) {
2964 		mutex_exit(&idn.dopers->dop_mutex);
2965 		PR_PROTO("%s: NO waiters exist (domset=0x%x)\n",
2966 		    proc, domset);
2967 		return;
2968 	}
2969 
2970 	for (dw = idn.dopers->dop_waitlist; dw; dw = dw->dw_next) {
2971 		int		d;
2972 		domainset_t	dset, rset;
2973 
2974 		if ((dset = dw->dw_reqset & domset) == 0)
2975 			continue;
2976 
2977 		if (opflag == IDNOP_ERROR) {
2978 			dw->dw_errset |= dset;
2979 			if (sep) {
2980 				for (d = 0; d < MAX_DOMAINS; d++) {
2981 					if (!DOMAIN_IN_SET(dset, d))
2982 						continue;
2983 
2984 					dw->dw_errors[d] =
2985 					    (short)GET_IDNKERR_ERRNO(sep);
2986 				}
2987 				bcopy(sep, dw->dw_idnerr, sizeof (*sep));
2988 			}
2989 		} else if (opflag == dw->dw_op) {
2990 			dw->dw_domset |= dset;
2991 		}
2992 
2993 		/*
2994 		 * Check if all the domains are spoken for that
2995 		 * a particular waiter may have been waiting for.
2996 		 * If there's at least one, we'll need to broadcast.
2997 		 */
2998 		rset = (dw->dw_errset | dw->dw_domset) & dw->dw_reqset;
2999 		if (rset == dw->dw_reqset)
3000 			do_wakeup++;
3001 	}
3002 
3003 	PR_PROTO("%s: found %d waiters ready for wakeup\n", proc, do_wakeup);
3004 
3005 	if (do_wakeup > 0)
3006 		cv_broadcast(&idn.dopers->dop_cv);
3007 
3008 	mutex_exit(&idn.dopers->dop_mutex);
3009 }
3010 
3011 void
3012 idn_deinit_op(void *cookie)
3013 {
3014 	domainset_t	domset;
3015 	dop_waitlist_t	*hw, *tw;
3016 	dop_waitlist_t	*dwl = (dop_waitlist_t *)cookie;
3017 
3018 	mutex_enter(&idn.dopers->dop_mutex);
3019 
3020 	ASSERT(idn.dopers->dop_waitlist);
3021 
3022 	if (dwl == idn.dopers->dop_waitlist) {
3023 		idn.dopers->dop_waitlist = dwl->dw_next;
3024 		if (IDNOP_IN_CACHE(dwl)) {
3025 			dwl->dw_next = idn.dopers->dop_freelist;
3026 			idn.dopers->dop_freelist = dwl;
3027 		} else {
3028 			FREESTRUCT(dwl, dop_waitlist_t, 1);
3029 		}
3030 	} else {
3031 		for (tw = idn.dopers->dop_waitlist, hw = tw->dw_next;
3032 		    hw;
3033 		    tw = hw, hw = hw->dw_next) {
3034 			if (dwl == hw)
3035 				break;
3036 		}
3037 		ASSERT(hw);
3038 
3039 		tw->dw_next = hw->dw_next;
3040 	}
3041 
3042 	/*
3043 	 * Recompute domainset for which waiters might be waiting.
3044 	 * It's possible there may be other waiters waiting for
3045 	 * the same domainset that the current waiter that's leaving
3046 	 * may have been waiting for, so we can't simply delete
3047 	 * the leaving waiter's domainset from dop_domset.
3048 	 */
3049 	for (hw = idn.dopers->dop_waitlist, domset = 0; hw; hw = hw->dw_next)
3050 		domset |= hw->dw_reqset;
3051 
3052 	idn.dopers->dop_waitcount--;
3053 	idn.dopers->dop_domset = domset;
3054 
3055 	mutex_exit(&idn.dopers->dop_mutex);
3056 }
3057 
3058 /*
3059  * Wait until the specified operation succeeds or fails with
3060  * respect to the given domains.  Note the function terminates
3061  * if at least one error occurs.
3062  * This process is necessary since link/unlink operations occur
3063  * asynchronously and we need some way of waiting to find out
3064  * if it indeed completed.
3065  * Timeout value is received indirectly from the SSP and
3066  * represents seconds.
3067  */
3068 int
3069 idn_wait_op(void *cookie, domainset_t *domsetp, int wait_timeout)
3070 {
3071 	int	d, rv, err = 0;
3072 	dop_waitlist_t	*dwl;
3073 
3074 
3075 	dwl = (dop_waitlist_t *)cookie;
3076 
3077 	ASSERT(wait_timeout > 0);
3078 	ASSERT((dwl->dw_op == IDNOP_CONNECTED) ||
3079 	    (dwl->dw_op == IDNOP_DISCONNECTED));
3080 
3081 	mutex_enter(&idn.dopers->dop_mutex);
3082 
3083 	while (((dwl->dw_domset | dwl->dw_errset) != dwl->dw_reqset) && !err) {
3084 		rv = cv_reltimedwait_sig(&idn.dopers->dop_cv,
3085 		    &idn.dopers->dop_mutex, (wait_timeout * hz), TR_CLOCK_TICK);
3086 
3087 		if ((dwl->dw_domset | dwl->dw_errset) == dwl->dw_reqset)
3088 			break;
3089 
3090 		switch (rv) {
3091 		case -1:
3092 			/*
3093 			 * timed out
3094 			 */
3095 			cmn_err(CE_WARN,
3096 			    "!IDN: 129: %s operation timed out",
3097 			    (dwl->dw_op == IDNOP_CONNECTED) ? "LINK" :
3098 			    (dwl->dw_op == IDNOP_DISCONNECTED) ? "UNLINK" :
3099 			    "UNKNOWN");
3100 			/*FALLTHROUGH*/
3101 		case 0:
3102 			/*
3103 			 * signal, e.g. kill(2)
3104 			 */
3105 			err = 1;
3106 			break;
3107 
3108 		default:
3109 			break;
3110 		}
3111 	}
3112 
3113 	if (dwl->dw_domset == dwl->dw_reqset) {
3114 		rv = 0;
3115 	} else {
3116 		/*
3117 		 * Op failed for some domains or we were awakened.
3118 		 */
3119 		for (d = rv = 0; (d < MAX_DOMAINS) && !rv; d++)
3120 			rv = dwl->dw_errors[d];
3121 	}
3122 	*domsetp = dwl->dw_domset;
3123 
3124 	mutex_exit(&idn.dopers->dop_mutex);
3125 
3126 	idn_deinit_op(cookie);
3127 
3128 	return (rv);
3129 }
3130 
3131 /*
3132  * --------------------------------------------------
3133  * Return any valid (& ready) cpuid for the given board based on
3134  * the given cpuset.
3135  * --------------------------------------------------
3136  */
3137 int
3138 board_to_ready_cpu(int board, cpuset_t cpuset)
3139 {
3140 	int	base_cpuid;
3141 	int	ncpu_board = MAX_CPU_PER_BRD;
3142 
3143 	board *= ncpu_board;
3144 	for (base_cpuid = board;
3145 	    base_cpuid < (board + ncpu_board);
3146 	    base_cpuid++)
3147 		if (CPU_IN_SET(cpuset, base_cpuid))
3148 			return (base_cpuid);
3149 
3150 	return (-1);
3151 }
3152 
3153 void
3154 idn_domain_resetentry(idn_domain_t *dp)
3155 {
3156 	register int		i;
3157 	procname_t	proc = "idn_domain_resetentry";
3158 
3159 	ASSERT(dp);
3160 	ASSERT(dp->dstate == IDNDS_CLOSED);
3161 	ASSERT(IDN_DLOCK_IS_EXCL(dp->domid));
3162 	ASSERT(IDN_GLOCK_IS_EXCL());
3163 
3164 	ASSERT(dp->domid == (dp - &idn_domain[0]));
3165 
3166 	IDN_FSTATE_TRANSITION(dp, IDNFIN_OFF);
3167 	dp->dname[0]	= '\0';
3168 	dp->dnetid	= (ushort_t)-1;
3169 	dp->dmtu	= 0;
3170 	dp->dbufsize	= 0;
3171 	dp->dslabsize	= 0;
3172 	dp->dnwrsize	= 0;
3173 	dp->dncpus	= 0;
3174 	dp->dcpuindex   = 0;
3175 	CPUSET_ZERO(dp->dcpuset);
3176 	dp->dcpu	= dp->dcpu_last = dp->dcpu_save = IDN_NIL_DCPU;
3177 	dp->dvote.ticket = 0;
3178 	dp->dslab	= NULL;
3179 	dp->dslab_state = DSLAB_STATE_UNKNOWN;
3180 	dp->dnslabs	= 0;
3181 	dp->dio		= 0;
3182 	dp->dioerr	= 0;
3183 	lock_clear(&dp->diowanted);
3184 	bzero(&dp->dhw, sizeof (dp->dhw));
3185 	dp->dxp		= NULL;
3186 	IDN_XSTATE_TRANSITION(dp, IDNXS_NIL);
3187 	dp->dsync.s_cmd = IDNSYNC_NIL;
3188 	dp->dfin_sync   = IDNFIN_SYNC_OFF;
3189 	IDN_RESET_COOKIES(dp->domid);
3190 	dp->dcookie_err = 0;
3191 	bzero(&dp->dawol, sizeof (dp->dawol));
3192 	dp->dtmp = -1;
3193 
3194 	if (dp->dtimerq.tq_queue != NULL) {
3195 		PR_PROTO("%s: WARNING: MSG timerq not empty (count = %d)\n",
3196 		    proc, dp->dtimerq.tq_count);
3197 		IDN_MSGTIMER_STOP(dp->domid, 0, 0);
3198 	}
3199 
3200 	for (i = 0; i < NCPU; i++)
3201 		dp->dcpumap[i] = (uchar_t)-1;
3202 }
3203 
3204 int
3205 idn_open_domain(int domid, int cpuid, uint_t ticket)
3206 {
3207 	int		c, new_cpuid;
3208 	idn_domain_t	*dp, *ldp;
3209 	procname_t	proc = "idn_open_domain";
3210 
3211 	ASSERT(IDN_SYNC_IS_LOCKED());
3212 	ASSERT(IDN_DLOCK_IS_EXCL(domid));
3213 
3214 	if (!VALID_DOMAINID(domid)) {
3215 		PR_PROTO("%s: INVALID domainid (%d) "
3216 		    "[cpuid = %d, ticket = 0x%x]\n",
3217 		    proc, domid, cpuid, ticket);
3218 		return (-1);
3219 	}
3220 
3221 	dp = &idn_domain[domid];
3222 	ldp = &idn_domain[idn.localid];
3223 
3224 	if (dp->dcpu >= 0) {
3225 		PR_PROTO("%s:%d: domain already OPEN (state = %s)\n",
3226 		    proc, domid, idnds_str[dp->dstate]);
3227 		return (1);
3228 	}
3229 
3230 	if (DOMAIN_IN_SET(idn.domset.ds_relink, domid)) {
3231 		if (dp->dcpu_save == IDN_NIL_DCPU)
3232 			new_cpuid = cpuid;
3233 		else
3234 			new_cpuid = dp->dcpu_save;
3235 	} else {
3236 		new_cpuid = cpuid;
3237 	}
3238 
3239 	if (new_cpuid == IDN_NIL_DCPU) {
3240 		PR_PROTO("%s:%d: WARNING: invalid cpuid (%d) specified\n",
3241 		    proc, domid, new_cpuid);
3242 		return (-1);
3243 	}
3244 
3245 	IDN_GLOCK_EXCL();
3246 
3247 	idn_domain_resetentry(dp);
3248 
3249 	PR_STATE("%s:%d: requested cpuid %d, assigning cpuid %d\n",
3250 	    proc, domid, cpuid, new_cpuid);
3251 
3252 	idn_assign_cookie(domid);
3253 
3254 	dp->dcpu = dp->dcpu_save = new_cpuid;
3255 	dp->dvote.ticket = ticket;
3256 	CPUSET_ADD(dp->dcpuset, new_cpuid);
3257 	dp->dncpus = 1;
3258 	for (c = 0; c < NCPU; c++)
3259 		dp->dcpumap[c] = (uchar_t)new_cpuid;
3260 	dp->dhw.dh_nboards = 1;
3261 	dp->dhw.dh_boardset = BOARDSET(CPUID_TO_BOARDID(new_cpuid));
3262 
3263 	if (domid != idn.localid)
3264 		IDN_DLOCK_EXCL(idn.localid);
3265 
3266 	if (idn.ndomains == 1) {
3267 		struct hwconfig	local_hw;
3268 
3269 		/*
3270 		 * We're attempting to connect to our first domain.
3271 		 * Recheck our local hardware configuration before
3272 		 * we go any further in case it changed due to a DR,
3273 		 * and update any structs dependent on this.
3274 		 * ASSUMPTION:
3275 		 *	IDN is unlinked before performing any DRs.
3276 		 */
3277 		PR_PROTO("%s: RECHECKING local HW config.\n", proc);
3278 		if (get_hw_config(&local_hw)) {
3279 			dp->dcpu = IDN_NIL_DCPU;
3280 			cmn_err(CE_WARN,
3281 			    "IDN: 118: hardware config not appropriate");
3282 			if (domid != idn.localid)
3283 				IDN_DUNLOCK(idn.localid);
3284 			IDN_GUNLOCK();
3285 			return (-1);
3286 		}
3287 		(void) update_local_hw_config(ldp, &local_hw);
3288 	}
3289 
3290 	idn.ndomains++;
3291 
3292 	if (domid != idn.localid)
3293 		IDN_DUNLOCK(idn.localid);
3294 	IDN_GUNLOCK();
3295 
3296 	IDN_MBOX_LOCK(domid);
3297 	dp->dmbox.m_tbl = NULL;
3298 
3299 	if (domid != idn.localid) {
3300 		dp->dmbox.m_send = idn_mainmbox_init(domid,
3301 		    IDNMMBOX_TYPE_SEND);
3302 		dp->dmbox.m_recv = idn_mainmbox_init(domid,
3303 		    IDNMMBOX_TYPE_RECV);
3304 	} else {
3305 		/*
3306 		 * The local domain does not need send/recv
3307 		 * mailboxes in its idn_domain[] entry.
3308 		 */
3309 		dp->dmbox.m_send = NULL;
3310 		dp->dmbox.m_recv = NULL;
3311 	}
3312 	IDN_MBOX_UNLOCK(domid);
3313 
3314 	PR_PROTO("%s:%d: new domain (cpu = %d, vote = 0x%x)\n",
3315 	    proc, domid, dp->dcpu, dp->dvote.ticket);
3316 
3317 	return (0);
3318 }
3319 
3320 /*
3321  * The local domain never "closes" itself unless the driver
3322  * is doing a idndetach.  It will be reopened during idnattach
3323  * when idn_domains_init is called.
3324  */
3325 void
3326 idn_close_domain(int domid)
3327 {
3328 	uint_t		token;
3329 	idn_domain_t	*dp;
3330 	procname_t	proc = "idn_close_domain";
3331 
3332 	ASSERT(IDN_SYNC_IS_LOCKED());
3333 	ASSERT(IDN_DLOCK_IS_EXCL(domid));
3334 
3335 	dp = &idn_domain[domid];
3336 
3337 	ASSERT(dp->dstate == IDNDS_CLOSED);
3338 
3339 	if (dp->dcpu == IDN_NIL_DCPU) {
3340 		PR_PROTO("%s:%d: DOMAIN ALREADY CLOSED!\n",
3341 		    proc, domid);
3342 		return;
3343 	}
3344 
3345 	token = IDN_RETRY_TOKEN(domid, IDN_RETRY_TYPEALL);
3346 
3347 	(void) idn_retry_terminate(token);
3348 
3349 	DOMAINSET_DEL(idn.domset.ds_trans_on, domid);
3350 	DOMAINSET_DEL(idn.domset.ds_ready_on, domid);
3351 	DOMAINSET_DEL(idn.domset.ds_connected, domid);
3352 	DOMAINSET_DEL(idn.domset.ds_trans_off, domid);
3353 	DOMAINSET_DEL(idn.domset.ds_ready_off, domid);
3354 	DOMAINSET_DEL(idn.domset.ds_hwlinked, domid);
3355 	DOMAINSET_DEL(idn.domset.ds_flush, domid);
3356 
3357 	idn_sync_exit(domid, IDNSYNC_CONNECT);
3358 	idn_sync_exit(domid, IDNSYNC_DISCONNECT);
3359 
3360 	IDN_GLOCK_EXCL();
3361 
3362 	if (DOMAIN_IN_SET(idn.domset.ds_awol, domid))
3363 		idn_clear_awol(domid);
3364 
3365 	idn.ndomains--;
3366 
3367 	IDN_GUNLOCK();
3368 
3369 	IDN_MBOX_LOCK(domid);
3370 	dp->dmbox.m_tbl = NULL;
3371 
3372 	if (dp->dmbox.m_send)  {
3373 		idn_mainmbox_deinit(domid, dp->dmbox.m_send);
3374 		dp->dmbox.m_send = NULL;
3375 	}
3376 
3377 	if (dp->dmbox.m_recv) {
3378 		idn_mainmbox_deinit(domid, dp->dmbox.m_recv);
3379 		dp->dmbox.m_recv = NULL;
3380 	}
3381 
3382 	IDN_MBOX_UNLOCK(domid);
3383 
3384 	cmn_err(CE_NOTE,
3385 	    "!IDN: 142: link (domain %d, CPU %d) disconnected",
3386 	    dp->domid, dp->dcpu);
3387 
3388 	dp->dcpu = IDN_NIL_DCPU;	/* ultimate demise */
3389 
3390 	IDN_RESET_COOKIES(domid);
3391 
3392 	ASSERT(dp->dio <= 0);
3393 	ASSERT(dp->dioerr == 0);
3394 	ASSERT(dp->dslab == NULL);
3395 	ASSERT(dp->dnslabs == 0);
3396 
3397 	IDN_GKSTAT_GLOBAL_EVENT(gk_unlinks, gk_unlink_last);
3398 }
3399 
3400 
3401 /*
3402  * -----------------------------------------------------------------------
3403  */
3404 static void
3405 idn_domains_init(struct hwconfig *local_hw)
3406 {
3407 	register int		i, d;
3408 	idn_domain_t		*ldp;
3409 	uchar_t			*cpumap;
3410 
3411 	ASSERT(local_hw != NULL);
3412 
3413 	cpumap = GETSTRUCT(uchar_t, NCPU * MAX_DOMAINS);
3414 
3415 	for (d = 0; d < MAX_DOMAINS; d++) {
3416 		register idn_domain_t	*dp;
3417 
3418 		dp = &idn_domain[d];
3419 
3420 		dp->domid = d;
3421 
3422 		rw_init(&dp->drwlock, NULL, RW_DEFAULT, NULL);
3423 
3424 		IDN_TIMERQ_INIT(&dp->dtimerq);
3425 
3426 		dp->dstate = IDNDS_CLOSED;
3427 
3428 		mutex_init(&dp->dmbox.m_mutex, NULL, MUTEX_DEFAULT, NULL);
3429 
3430 		dp->dcpumap = cpumap;
3431 
3432 		rw_init(&dp->dslab_rwlock, NULL, RW_DEFAULT, NULL);
3433 
3434 		IDN_DLOCK_EXCL(d);
3435 		IDN_GLOCK_EXCL();
3436 
3437 		idn_domain_resetentry(dp);
3438 
3439 		IDN_GUNLOCK();
3440 
3441 		IDNSB_DOMAIN_UPDATE(dp);
3442 
3443 		IDN_DUNLOCK(d);
3444 
3445 		cpumap += NCPU;
3446 	}
3447 
3448 	IDN_SYNC_LOCK();
3449 
3450 	/*
3451 	 * Update local domain information.
3452 	 */
3453 	ASSERT(idn.smr.locpfn);
3454 	ASSERT(local_hw->dh_nboards && local_hw->dh_boardset);
3455 
3456 	idn.ndomains = 0;	/* note that open_domain will get us to 1 */
3457 
3458 	IDN_DLOCK_EXCL(idn.localid);
3459 	d = idn_open_domain(idn.localid, (int)CPU->cpu_id, 0);
3460 	ASSERT(d == 0);
3461 	IDN_GLOCK_EXCL();
3462 	IDN_SET_MASTERID(IDN_NIL_DOMID);
3463 	IDN_SET_NEW_MASTERID(IDN_NIL_DOMID);
3464 
3465 	ldp = &idn_domain[idn.localid];
3466 
3467 	(void) strncpy(ldp->dname, utsname.nodename, MAXDNAME - 1);
3468 	ldp->dname[MAXDNAME-1] = '\0';
3469 	bcopy(local_hw, &ldp->dhw, sizeof (ldp->dhw));
3470 	ASSERT(idn.ndomains == 1);
3471 	ASSERT((ldp->dhw.dh_nboards > 0) &&
3472 	    (ldp->dhw.dh_nboards <= MAX_BOARDS));
3473 	ldp->dnetid	= IDN_DOMID2NETID(ldp->domid);
3474 	ldp->dmtu	= IDN_MTU;
3475 	ldp->dbufsize	= IDN_SMR_BUFSIZE;
3476 	ldp->dslabsize	= (short)IDN_SLAB_BUFCOUNT;
3477 	ldp->dnwrsize	= (short)IDN_NWR_SIZE;
3478 	ldp->dcpuset	= cpu_ready_set;
3479 	ldp->dncpus	= (short)ncpus;
3480 	ldp->dvote.ticket	= IDNVOTE_INITIAL_TICKET;
3481 	ldp->dvote.v.master	= 0;
3482 	ldp->dvote.v.nmembrds	= ldp->dhw.dh_nmcadr - 1;
3483 	ldp->dvote.v.ncpus	= (int)ldp->dncpus - 1;
3484 	ldp->dvote.v.board	= CPUID_TO_BOARDID(ldp->dcpu);
3485 	i = -1;
3486 	for (d = 0; d < NCPU; d++) {
3487 		BUMP_INDEX(ldp->dcpuset, i);
3488 		ldp->dcpumap[d] = (uchar_t)i;
3489 	}
3490 
3491 	CPUSET_ZERO(idn.dc_cpuset);
3492 	CPUSET_OR(idn.dc_cpuset, ldp->dcpuset);
3493 	idn.dc_boardset = ldp->dhw.dh_boardset;
3494 
3495 	/*
3496 	 * Setting the state for ourselves is only relevant
3497 	 * for loopback performance testing.  Anyway, it
3498 	 * makes sense that we always have an established
3499 	 * connection with ourself regardless of IDN :-o
3500 	 */
3501 	IDN_DSTATE_TRANSITION(ldp, IDNDS_CONNECTED);
3502 
3503 	IDN_GUNLOCK();
3504 	IDN_DUNLOCK(idn.localid);
3505 	IDN_SYNC_UNLOCK();
3506 }
3507 
3508 static void
3509 idn_domains_deinit()
3510 {
3511 	register int	d;
3512 
3513 	IDN_SYNC_LOCK();
3514 	IDN_DLOCK_EXCL(idn.localid);
3515 	IDN_DSTATE_TRANSITION(&idn_domain[idn.localid], IDNDS_CLOSED);
3516 	idn_close_domain(idn.localid);
3517 	IDN_DUNLOCK(idn.localid);
3518 	IDN_SYNC_UNLOCK();
3519 	idn.localid = IDN_NIL_DOMID;
3520 
3521 	FREESTRUCT(idn_domain[0].dcpumap, uchar_t, NCPU * MAX_DOMAINS);
3522 
3523 	for (d = 0; d < MAX_DOMAINS; d++) {
3524 		idn_domain_t	*dp;
3525 
3526 		dp = &idn_domain[d];
3527 
3528 		rw_destroy(&dp->dslab_rwlock);
3529 		mutex_destroy(&dp->dmbox.m_mutex);
3530 		rw_destroy(&dp->drwlock);
3531 		IDN_TIMERQ_DEINIT(&dp->dtimerq);
3532 		dp->dcpumap = NULL;
3533 	}
3534 }
3535 
3536 /*
3537  * -----------------------------------------------------------------------
3538  */
3539 static void
3540 idn_retrytask_init()
3541 {
3542 	ASSERT(idn.retryqueue.rq_cache == NULL);
3543 
3544 	mutex_init(&idn.retryqueue.rq_mutex, NULL, MUTEX_DEFAULT, NULL);
3545 	idn.retryqueue.rq_cache = kmem_cache_create("idn_retryjob_cache",
3546 	    sizeof (idn_retry_job_t),
3547 	    0, NULL, NULL, NULL,
3548 	    NULL, NULL, 0);
3549 }
3550 
3551 static void
3552 idn_retrytask_deinit()
3553 {
3554 	if (idn.retryqueue.rq_cache == NULL)
3555 		return;
3556 
3557 	kmem_cache_destroy(idn.retryqueue.rq_cache);
3558 	mutex_destroy(&idn.retryqueue.rq_mutex);
3559 
3560 	bzero(&idn.retryqueue, sizeof (idn.retryqueue));
3561 }
3562 
3563 /*
3564  * -----------------------------------------------------------------------
3565  */
3566 static void
3567 idn_timercache_init()
3568 {
3569 	ASSERT(idn.timer_cache == NULL);
3570 
3571 	idn.timer_cache = kmem_cache_create("idn_timer_cache",
3572 	    sizeof (idn_timer_t),
3573 	    0, NULL, NULL, NULL,
3574 	    NULL, NULL, 0);
3575 }
3576 
3577 static void
3578 idn_timercache_deinit()
3579 {
3580 	if (idn.timer_cache == NULL)
3581 		return;
3582 
3583 	kmem_cache_destroy(idn.timer_cache);
3584 	idn.timer_cache = NULL;
3585 }
3586 
3587 idn_timer_t *
3588 idn_timer_alloc()
3589 {
3590 	idn_timer_t	*tp;
3591 
3592 	tp = kmem_cache_alloc(idn.timer_cache, KM_SLEEP);
3593 	bzero(tp, sizeof (*tp));
3594 	tp->t_forw = tp->t_back = tp;
3595 
3596 	return (tp);
3597 }
3598 
3599 void
3600 idn_timer_free(idn_timer_t *tp)
3601 {
3602 	if (tp == NULL)
3603 		return;
3604 	kmem_cache_free(idn.timer_cache, tp);
3605 }
3606 
3607 void
3608 idn_timerq_init(idn_timerq_t *tq)
3609 {
3610 	mutex_init(&tq->tq_mutex, NULL, MUTEX_DEFAULT, NULL);
3611 	tq->tq_count = 0;
3612 	tq->tq_queue = NULL;
3613 }
3614 
3615 void
3616 idn_timerq_deinit(idn_timerq_t *tq)
3617 {
3618 	ASSERT(tq->tq_queue == NULL);
3619 	mutex_destroy(&tq->tq_mutex);
3620 }
3621 
3622 /*
3623  * Dequeue all the timers of the given subtype from the
3624  * given timerQ.  If subtype is 0, then dequeue all the
3625  * timers.
3626  */
3627 idn_timer_t *
3628 idn_timer_get(idn_timerq_t *tq, int type, ushort_t tcookie)
3629 {
3630 	register idn_timer_t	*tp, *tphead;
3631 
3632 	ASSERT(IDN_TIMERQ_IS_LOCKED(tq));
3633 
3634 	if ((tp = tq->tq_queue) == NULL)
3635 		return (NULL);
3636 
3637 	if (!type) {
3638 		tq->tq_queue = NULL;
3639 		tq->tq_count = 0;
3640 		tphead = tp;
3641 	} else {
3642 		int		count;
3643 		idn_timer_t	*tpnext;
3644 
3645 		tphead = NULL;
3646 		count = tq->tq_count;
3647 		do {
3648 			tpnext = tp->t_forw;
3649 			if ((tp->t_type == type) &&
3650 			    (!tcookie || (tp->t_cookie == tcookie))) {
3651 				tp->t_forw->t_back = tp->t_back;
3652 				tp->t_back->t_forw = tp->t_forw;
3653 				if (tphead == NULL) {
3654 					tp->t_forw = tp->t_back = tp;
3655 				} else {
3656 					tp->t_forw = tphead;
3657 					tp->t_back = tphead->t_back;
3658 					tp->t_back->t_forw = tp;
3659 					tphead->t_back = tp;
3660 				}
3661 				tphead = tp;
3662 				if (--(tq->tq_count) == 0)
3663 					tq->tq_queue = NULL;
3664 				else if (tq->tq_queue == tp)
3665 					tq->tq_queue = tpnext;
3666 			}
3667 			tp = tpnext;
3668 		} while (--count > 0);
3669 	}
3670 
3671 	if (tphead) {
3672 		tphead->t_back->t_forw = NULL;
3673 
3674 		for (tp = tphead; tp; tp = tp->t_forw)
3675 			tp->t_onq = 0;
3676 	}
3677 
3678 	return (tphead);
3679 }
3680 
3681 ushort_t
3682 idn_timer_start(idn_timerq_t *tq, idn_timer_t *tp, clock_t tval)
3683 {
3684 	idn_timer_t	*otp;
3685 	ushort_t	tcookie;
3686 	procname_t	proc = "idn_timer_start";
3687 	STRING(str);
3688 
3689 	ASSERT(tq && tp && (tval > 0));
3690 	ASSERT((tp->t_forw == tp) && (tp->t_back == tp));
3691 	ASSERT(tp->t_type != 0);
3692 
3693 	IDN_TIMERQ_LOCK(tq);
3694 	/*
3695 	 * Assign a unique non-zero 8-bit cookie to this timer
3696 	 * if the caller hasn't already preassigned one.
3697 	 */
3698 	while ((tcookie = tp->t_cookie) == 0) {
3699 		tp->t_cookie = (tp->t_type & 0xf) |
3700 		    ((++tq->tq_cookie & 0xf) << 4);
3701 		/*
3702 		 * Calculated cookie must never conflict
3703 		 * with the public timer cookie.
3704 		 */
3705 		ASSERT(tp->t_cookie != IDN_TIMER_PUBLIC_COOKIE);
3706 	}
3707 
3708 	/*
3709 	 * First have to remove old timers of the
3710 	 * same type and cookie, and get rid of them.
3711 	 */
3712 	otp = idn_timer_get(tq, tp->t_type, tcookie);
3713 
3714 	tq->tq_count++;
3715 
3716 	if (tq->tq_queue == NULL) {
3717 		tq->tq_queue = tp;
3718 		ASSERT((tp->t_forw == tp) && (tp->t_back == tp));
3719 	} else {
3720 		/*
3721 		 * Put me at the end of the list.
3722 		 */
3723 		tp->t_forw = tq->tq_queue;
3724 		tp->t_back = tq->tq_queue->t_back;
3725 		tp->t_back->t_forw = tp;
3726 		tp->t_forw->t_back = tp;
3727 	}
3728 
3729 	tp->t_onq = 1;
3730 	tp->t_q = tq;
3731 	tp->t_id = timeout(idn_timer_expired, (caddr_t)tp, tval);
3732 
3733 
3734 	INUM2STR(tp->t_type, str);
3735 	PR_TIMER("%s: started %s timer (domain = %d, cookie = 0x%x)\n",
3736 	    proc, str, tp->t_domid, tcookie);
3737 
3738 	IDN_TIMERQ_UNLOCK(tq);
3739 
3740 	if (otp)
3741 		(void) idn_timer_stopall(otp);
3742 
3743 	return (tcookie);
3744 }
3745 
3746 /*
3747  * Stop all timers of the given subtype.
3748  * If subtype is 0, then stop all timers
3749  * in this timerQ.
3750  */
3751 void
3752 idn_timer_stop(idn_timerq_t *tq, int type, ushort_t tcookie)
3753 {
3754 	idn_timer_t	*tphead;
3755 	procname_t	proc = "idn_timer_stop";
3756 	STRING(str);
3757 
3758 	ASSERT(tq);
3759 
3760 	INUM2STR(type, str);
3761 
3762 	IDN_TIMERQ_LOCK(tq);
3763 
3764 	if (tq->tq_count == 0) {
3765 		PR_TIMER("%s: found no %s timers (count=0)\n", proc, str);
3766 		IDN_TIMERQ_UNLOCK(tq);
3767 		return;
3768 	}
3769 	tphead = idn_timer_get(tq, type, tcookie);
3770 #ifdef DEBUG
3771 	if (tphead == NULL)
3772 		PR_TIMER("%s: found no %s (cookie = 0x%x) "
3773 		    "timers (count=%d)!!\n",
3774 		    proc, str, tcookie, tq->tq_count);
3775 #endif /* DEBUG */
3776 	IDN_TIMERQ_UNLOCK(tq);
3777 
3778 	if (tphead)
3779 		(void) idn_timer_stopall(tphead);
3780 }
3781 
3782 int
3783 idn_timer_stopall(idn_timer_t *tp)
3784 {
3785 	int		count = 0;
3786 	int		nonactive;
3787 	uint_t		type;
3788 	idn_timer_t	*ntp;
3789 	procname_t	proc = "idn_timer_stopall";
3790 	STRING(str);
3791 
3792 	nonactive = 0;
3793 
3794 	if (tp) {
3795 		/*
3796 		 * Circle should have been broken.
3797 		 */
3798 		ASSERT(tp->t_back->t_forw == NULL);
3799 		type = tp->t_type;
3800 		INUM2STR(type, str);
3801 	}
3802 
3803 	for (; tp; tp = ntp) {
3804 		ntp = tp->t_forw;
3805 		count++;
3806 		ASSERT(tp->t_id != (timeout_id_t)0);
3807 		if (untimeout(tp->t_id) < 0) {
3808 			nonactive++;
3809 			PR_TIMER("%s: bad %s untimeout (domain=%d)\n",
3810 			    proc, str, tp->t_domid);
3811 		} else {
3812 			PR_TIMER("%s: good %s untimeout (domain=%d)\n",
3813 			    proc, str, tp->t_domid);
3814 		}
3815 		/*
3816 		 * There are two possible outcomes from
3817 		 * the untimeout().  Each ultimately result
3818 		 * in us having to free the timeout structure.
3819 		 *
3820 		 * 1. We successfully aborted a timeout call.
3821 		 *
3822 		 * 2. We failed to find the given timer.  He
3823 		 *    probably just fired off.
3824 		 */
3825 		idn_timer_free(tp);
3826 	}
3827 	PR_TIMER("%s: stopped %d of %d %s timers\n",
3828 	    proc, count - nonactive, count, str);
3829 
3830 	return (count);
3831 }
3832 
3833 void
3834 idn_timer_dequeue(idn_timerq_t *tq, idn_timer_t *tp)
3835 {
3836 	ASSERT(tq && tp);
3837 	ASSERT(IDN_TIMERQ_IS_LOCKED(tq));
3838 
3839 	ASSERT(tp->t_q == tq);
3840 
3841 	if (tp->t_onq == 0) {
3842 		/*
3843 		 * We've already been dequeued.
3844 		 */
3845 		ASSERT(tp == tp->t_forw);
3846 		ASSERT(tp == tp->t_back);
3847 	} else {
3848 		/*
3849 		 * We're still in the queue, get out.
3850 		 */
3851 		if (tq->tq_queue == tp)
3852 			tq->tq_queue = tp->t_forw;
3853 		tp->t_forw->t_back = tp->t_back;
3854 		tp->t_back->t_forw = tp->t_forw;
3855 		tp->t_onq = 0;
3856 		if (--(tq->tq_count) == 0) {
3857 			ASSERT(tq->tq_queue == tp);
3858 			tq->tq_queue = NULL;
3859 		}
3860 		tp->t_forw = tp->t_back = tp;
3861 	}
3862 }
3863 
3864 /*
3865  * -----------------------------------------------------------------------
3866  */
3867 /*ARGSUSED*/
3868 static int
3869 idn_slabpool_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
3870 {
3871 	register int	p, nfree;
3872 	char		dsetstr[128];
3873 
3874 	ASSERT(IDN_GLOCK_IS_HELD());
3875 
3876 	if (idn.slabpool == NULL) {
3877 		(void) mi_mpprintf(mp,
3878 		    "IDN slabpool not initialized (masterid = %d)",
3879 		    IDN_GET_MASTERID());
3880 		return (0);
3881 	}
3882 
3883 	for (p = nfree = 0; p < idn.slabpool->npools; p++)
3884 		nfree += idn.slabpool->pool[p].nfree;
3885 
3886 	(void) mi_mpprintf(mp,
3887 	    "IDN slabpool (ntotal_slabs = %d, nalloc = %d, "
3888 	    "npools = %d)",
3889 	    idn.slabpool->ntotslabs,
3890 	    idn.slabpool->ntotslabs - nfree,
3891 	    idn.slabpool->npools);
3892 
3893 	(void) mi_mpprintf(mp, "pool  nslabs  nfree domains");
3894 
3895 	for (p = 0; p < idn.slabpool->npools; p++) {
3896 		register int	d, s;
3897 		uint_t		domset;
3898 
3899 		domset = 0;
3900 		for (s = 0; s < idn.slabpool->pool[p].nslabs; s++) {
3901 			short	dd;
3902 
3903 			dd = idn.slabpool->pool[p].sarray[s].sl_domid;
3904 			if (dd != (short)IDN_NIL_DOMID)
3905 				DOMAINSET_ADD(domset, dd);
3906 		}
3907 		dsetstr[0] = '\0';
3908 		if (domset) {
3909 			for (d = 0; d < MAX_DOMAINS; d++) {
3910 				if (!DOMAIN_IN_SET(domset, d))
3911 					continue;
3912 
3913 				if (dsetstr[0] == '\0')
3914 					(void) sprintf(dsetstr, "%d", d);
3915 				else
3916 					(void) sprintf(dsetstr, "%s %d",
3917 					    dsetstr, d);
3918 			}
3919 		}
3920 
3921 		if (p < 10)
3922 			(void) mi_mpprintf(mp, "  %d     %d       %d    %s",
3923 			    p, idn.slabpool->pool[p].nslabs,
3924 			    idn.slabpool->pool[p].nfree,
3925 			    dsetstr);
3926 		else
3927 			(void) mi_mpprintf(mp, " %d     %d       %d    %s",
3928 			    p, idn.slabpool->pool[p].nslabs,
3929 			    idn.slabpool->pool[p].nfree,
3930 			    dsetstr);
3931 	}
3932 	return (0);
3933 }
3934 
3935 /*ARGSUSED*/
3936 static int
3937 idn_buffer_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
3938 {
3939 	smr_slab_t	*sp;
3940 	register int	d, cnt;
3941 	int		bufcount[MAX_DOMAINS];
3942 	int		spl;
3943 
3944 	ASSERT(IDN_GLOCK_IS_HELD());
3945 
3946 	if (idn.localid == IDN_NIL_DOMID) {
3947 		(void) mi_mpprintf(mp, "IDN not initialized (localid = %d)",
3948 		    idn.localid);
3949 		return (0);
3950 	}
3951 
3952 	(void) mi_mpprintf(mp, "Local domain has %d slabs allocated.",
3953 	    idn_domain[idn.localid].dnslabs);
3954 
3955 	DSLAB_LOCK_SHARED(idn.localid);
3956 	if ((sp = idn_domain[idn.localid].dslab) == NULL) {
3957 		DSLAB_UNLOCK(idn.localid);
3958 		return (0);
3959 	}
3960 
3961 	bzero(bufcount, sizeof (bufcount));
3962 	cnt = 0;
3963 
3964 	spl = splhi();
3965 	for (; sp; sp = sp->sl_next) {
3966 		smr_slabbuf_t	*bp;
3967 
3968 		while (!lock_try(&sp->sl_lock))
3969 			;
3970 		for (bp = sp->sl_inuse; bp; bp = bp->sb_next) {
3971 			bufcount[bp->sb_domid]++;
3972 			cnt++;
3973 		}
3974 		lock_clear(&sp->sl_lock);
3975 	}
3976 	splx(spl);
3977 
3978 	DSLAB_UNLOCK(idn.localid);
3979 
3980 	(void) mi_mpprintf(mp, "Local domain has %d buffers outstanding.", cnt);
3981 	if (cnt == 0)
3982 		return (0);
3983 
3984 	(void) mi_mpprintf(mp, "Domain  nbufs");
3985 	for (d = 0; d < MAX_DOMAINS; d++)
3986 		if (bufcount[d]) {
3987 			if (d < 10)
3988 				(void) mi_mpprintf(mp, "   %d      %d",
3989 				    d, bufcount[d]);
3990 			else
3991 				(void) mi_mpprintf(mp, "  %d      %d",
3992 				    d, bufcount[d]);
3993 		}
3994 
3995 	return (0);
3996 }
3997 
3998 static const char *
3999 _get_spaces(int w, int s, int W)
4000 {
4001 	static const char *const _spaces[] = {
4002 		"",			/* 0 */
4003 		" ",			/* 1 */
4004 		"  ", 			/* 2 */
4005 		"   ", 			/* 3 */
4006 		"    ", 		/* 4 */
4007 		"     ", 		/* 5 */
4008 		"      ", 		/* 6 */
4009 		"       ", 		/* 7 */
4010 		"        ", 		/* 8 */
4011 		"         ", 		/* 9 */
4012 		"          ", 		/* 10 */
4013 		"           ", 		/* 11 */
4014 		"            ", 	/* 12 */
4015 		"             ", 	/* 13 */
4016 		"              ", 	/* 14 */
4017 		"               ", 	/* 15 */
4018 		"                ", 	/* 16 */
4019 		"                 ", 	/* 17 */
4020 		"                  ", 	/* 18 */
4021 		"                   ", 	/* 19 */
4022 	};
4023 	return (_spaces[w+s-W]);
4024 }
4025 
4026 #define	_SSS(X, W, w, s) \
4027 	(((w) >= (W)) && (X)) ? _get_spaces((w), (s), (W))
4028 
4029 static const char *
4030 _hexspace(uint64_t v, int sz, int width, int padding)
4031 {
4032 	int	maxnbl = 16;
4033 	int	diff;
4034 	uchar_t	*np;
4035 
4036 	diff = sizeof (uint64_t) - sz;
4037 	np = (uchar_t *)&v + diff;
4038 	maxnbl -= diff << 1;
4039 	while (sz-- > 0) {
4040 		if ((*np & 0xf0) && (width >= maxnbl))
4041 			return (_get_spaces(width, padding, maxnbl));
4042 		maxnbl--;
4043 		if ((*np & 0x0f) && (width >= maxnbl))
4044 			return (_get_spaces(width, padding, maxnbl));
4045 		maxnbl--;
4046 		np++;
4047 	}
4048 	return (_get_spaces(width, padding, 1));
4049 }
4050 
4051 #define	HEXSPACE(v, t, w, s)	_hexspace((uint64_t)(v), sizeof (t), (w), (s))
4052 
4053 #define	DECSPACE(n, w, s) \
4054 	(_SSS((uint_t)(n) >= 10000000, 8, (w), (s)) : \
4055 	_SSS((uint_t)(n) >= 1000000, 7, (w), (s)) : \
4056 	_SSS((uint_t)(n) >= 100000, 6, (w), (s)) : \
4057 	_SSS((uint_t)(n) >= 10000, 5, (w), (s)) : \
4058 	_SSS((uint_t)(n) >= 1000, 4, (w), (s)) : \
4059 	_SSS((uint_t)(n) >= 100, 3, (w), (s)) : \
4060 	_SSS((uint_t)(n) >= 10, 2, (w), (s)) : \
4061 	_get_spaces((w), (s), 1))
4062 
4063 #define	DECSPACE16(n, w, s) \
4064 	(_SSS((n) >= 10000, 5, (w), (s)) : \
4065 	_SSS((n) >= 1000, 4, (w), (s)) : \
4066 	_SSS((n) >= 100, 3, (w), (s)) : \
4067 	_SSS((n) >= 10, 2, (w), (s)) : \
4068 	_get_spaces((w), (s), 1))
4069 
4070 #define	MBXINFO(mtp) \
4071 	(void *)&mtp->mt_header, \
4072 		HEXSPACE(&mtp->mt_header, &mtp->mt_header, 16, 2), \
4073 	mtp->mt_header.mh_svr_ready_ptr, \
4074 		HEXSPACE(mtp->mt_header.mh_svr_ready_ptr, \
4075 			mtp->mt_header.mh_svr_ready_ptr, 8, 1), \
4076 	mtp->mt_header.mh_svr_active_ptr, \
4077 		HEXSPACE(mtp->mt_header.mh_svr_active_ptr, \
4078 			mtp->mt_header.mh_svr_active_ptr, 8, 2), \
4079 	*(ushort_t *)(IDN_OFFSET2ADDR(mtp->mt_header.mh_svr_ready_ptr)), \
4080 	DECSPACE16(*(ushort_t *) \
4081 			(IDN_OFFSET2ADDR(mtp->mt_header.mh_svr_ready_ptr)), \
4082 			1, 1), \
4083 	*(ushort_t *)(IDN_OFFSET2ADDR(mtp->mt_header.mh_svr_active_ptr)), \
4084 	DECSPACE16(*(ushort_t *) \
4085 			(IDN_OFFSET2ADDR(mtp->mt_header.mh_svr_active_ptr)), \
4086 			1, 5), \
4087 	mtp->mt_header.mh_cookie, \
4088 		HEXSPACE(mtp->mt_header.mh_cookie, \
4089 			mtp->mt_header.mh_cookie, 8, 2), \
4090 	(void *)&mtp->mt_queue[0], \
4091 		HEXSPACE(&mtp->mt_queue[0], &mtp->mt_queue[0], 16, 2)
4092 
4093 /*ARGSUSED*/
4094 static int
4095 idn_mboxtbl_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
4096 {
4097 	register int		c, n, domid, subdomid;
4098 	register idn_mboxtbl_t	*mtp;
4099 	register idn_mboxmsg_t	*msp;
4100 	idn_mboxtbl_t		*map, *mtbasep;
4101 
4102 
4103 	ASSERT((cp == MBXTBL_PART_REPORT) || (cp == MBXTBL_FULL_REPORT));
4104 
4105 	if (IDN_GLOCK_TRY_SHARED() == 0) {
4106 		(void) mi_mpprintf(mp, "Local domain busy, try again.");
4107 		return (0);
4108 	}
4109 
4110 	if ((map = idn.mboxarea) == NULL) {
4111 		(void) mi_mpprintf(mp,
4112 		    "WARNING: Local domain is not master, "
4113 		    "ASSUMING idn.smr.vaddr.");
4114 		map = (idn_mboxtbl_t *)idn.smr.vaddr;
4115 	}
4116 
4117 	if (map) {
4118 		(void) mi_mpprintf(mp, "Mailbox Area starts @ 0x%p",
4119 		    (void *)map);
4120 	} else {
4121 		(void) mi_mpprintf(mp, "Mailbox Area not found.");
4122 		goto repdone;
4123 	}
4124 
4125 	if (!idn.nchannels) {
4126 		(void) mi_mpprintf(mp, "No OPEN channels found");
4127 		goto repdone;
4128 	}
4129 
4130 	for (c = 0; c < IDN_MAX_NETS; c++) {
4131 
4132 		IDN_CHAN_LOCK_GLOBAL(&idn.chan_servers[c]);
4133 		if (!IDN_CHANNEL_IS_ATTACHED(&idn.chan_servers[c])) {
4134 			IDN_CHAN_UNLOCK_GLOBAL(&idn.chan_servers[c]);
4135 			continue;
4136 		}
4137 
4138 		(void) mi_mpprintf(mp,
4139 		    "Channel %d ---------------------------"
4140 		    "--------------------------"
4141 		    "-----------------------------", c);
4142 		(void) mi_mpprintf(mp,
4143 		    "  Domain   Header	    "
4144 		    "Ready/Active Ptrs    "
4145 		    "rdy/actv  cookie    Queue	     "
4146 		    "busy");
4147 
4148 		for (domid = 0; domid < MAX_DOMAINS; domid++) {
4149 			register int	busy_count;
4150 
4151 			if ((cp == MBXTBL_PART_REPORT) &&
4152 			    (idn_domain[domid].dcpu == IDN_NIL_DCPU))
4153 				continue;
4154 
4155 			mtbasep = IDN_MBOXAREA_BASE(map, domid);
4156 
4157 			for (subdomid = 0; subdomid < MAX_DOMAINS;
4158 			    subdomid++) {
4159 				mtp = IDN_MBOXTBL_PTR(mtbasep, subdomid);
4160 				mtp = IDN_MBOXTBL_PTR_CHAN(mtp, c);
4161 
4162 				if (subdomid == domid) {
4163 					if (subdomid == 0)
4164 						(void) mi_mpprintf(mp,
4165 						    "   %x.%x-%d%s%s",
4166 						    domid, subdomid, c,
4167 							/*CONSTCOND*/
4168 						    DECSPACE(c, 2, 2),
4169 						    "-- unused --");
4170 					else
4171 						(void) mi_mpprintf(mp,
4172 						    "    .%x-%d%s%s",
4173 						    subdomid, c,
4174 							/*CONSTCOND*/
4175 						    DECSPACE(c, 2, 2),
4176 						    "-- unused --");
4177 					continue;
4178 				}
4179 				busy_count = 0;
4180 				msp = &mtp->mt_queue[0];
4181 				for (n = 0; n < IDN_MMBOX_NUMENTRIES; n++) {
4182 					if (msp[n].ms_owner)
4183 						busy_count++;
4184 				}
4185 				if (subdomid == 0) {
4186 					(void) mi_mpprintf(mp,
4187 					    "   %x.%x-%d%s%p%s%x%s/ %x%s"
4188 					    "%d%s/ %d%s%x%s%p%s%d%s",
4189 					    domid, subdomid, c,
4190 						/*CONSTCOND*/
4191 					    DECSPACE(c, 2, 2),
4192 					    MBXINFO(mtp), busy_count,
4193 					    busy_count ? " <<<<<":"");
4194 				} else {
4195 					(void) mi_mpprintf(mp,
4196 					    "    .%x-%d%s%p%s%x%s/ %x%s"
4197 					    "%d%s/ %d%s%x%s%p%s%d%s",
4198 					    subdomid, c,
4199 						/*CONSTCOND*/
4200 					    DECSPACE(c, 2, 2),
4201 					    MBXINFO(mtp), busy_count,
4202 					    busy_count ? " <<<<<":"");
4203 				}
4204 			}
4205 		}
4206 		IDN_CHAN_UNLOCK_GLOBAL(&idn.chan_servers[c]);
4207 	}
4208 
4209 repdone:
4210 	IDN_GUNLOCK();
4211 
4212 	return (0);
4213 }
4214 
4215 /*ARGSUSED*/
4216 static void
4217 idn_mainmbox_domain_report(queue_t *wq, mblk_t *mp, int domid,
4218 					idn_mainmbox_t *mmp, char *mbxtype)
4219 {
4220 	register int	c;
4221 
4222 	if (mmp == NULL) {
4223 		(void) mi_mpprintf(mp, " %x.%s  -- none --", domid, mbxtype);
4224 		return;
4225 	}
4226 
4227 	for (c = 0; c < IDN_MAX_NETS; mmp++, c++) {
4228 		int	mm_count;
4229 
4230 		IDN_CHAN_LOCK_GLOBAL(&idn.chan_servers[c]);
4231 		if (IDN_CHANNEL_IS_DETACHED(&idn.chan_servers[c])) {
4232 			(void) mi_mpprintf(mp, " %x.%s  %u  -- not open --",
4233 			    domid, mbxtype, (int)mmp->mm_channel);
4234 			IDN_CHAN_UNLOCK_GLOBAL(&idn.chan_servers[c]);
4235 			continue;
4236 		}
4237 
4238 		mm_count = ((mmp->mm_count < 0) ? 0 : mmp->mm_count) / 1000;
4239 
4240 		(void) mi_mpprintf(mp, " %x.%s  %d%s%d%s%d%s%p%s%p%s%p%s%d/%d",
4241 		    domid, mbxtype,
4242 		    (int)mmp->mm_channel,
4243 					/*CONSTCOND*/
4244 		    DECSPACE((int)mmp->mm_channel, 5, 2),
4245 		    mm_count, DECSPACE(mm_count, 8, 2),
4246 		    mmp->mm_dropped,
4247 		    DECSPACE(mmp->mm_dropped, 8, 2),
4248 		    (void *)mmp->mm_smr_mboxp,
4249 		    HEXSPACE(mmp->mm_smr_mboxp,
4250 		    mmp->mm_smr_mboxp, 16, 2),
4251 		    (void *)mmp->mm_smr_readyp,
4252 		    HEXSPACE(mmp->mm_smr_readyp,
4253 		    mmp->mm_smr_readyp, 16, 2),
4254 		    (void *)mmp->mm_smr_activep,
4255 		    HEXSPACE(mmp->mm_smr_activep,
4256 		    mmp->mm_smr_activep, 16, 2),
4257 		    mmp->mm_qiget, mmp->mm_qiput);
4258 		IDN_CHAN_UNLOCK_GLOBAL(&idn.chan_servers[c]);
4259 	}
4260 }
4261 
4262 /*ARGSUSED2*/
4263 static int
4264 idn_mainmbox_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
4265 {
4266 	int	domid;
4267 	int	header = 0;
4268 
4269 	/*
4270 	 * Domain 0 never has a send/recv mainmbox so
4271 	 * don't bother printing him.
4272 	 */
4273 	for (domid = 1; domid < MAX_DOMAINS; domid++) {
4274 		idn_domain_t	*dp;
4275 
4276 		dp = &idn_domain[domid];
4277 
4278 		if (dp->dcpu == IDN_NIL_DCPU)
4279 			continue;
4280 		IDN_DLOCK_SHARED(domid);
4281 		if (dp->dcpu == IDN_NIL_DCPU) {
4282 			IDN_DUNLOCK(domid);
4283 			continue;
4284 		}
4285 		if (!header) {
4286 			(void) mi_mpprintf(mp,
4287 			    "Domain  Chan   PktCntK   "
4288 			    "PktDrop   SMRMbox	   "
4289 			    "ReadyPtr	  "
4290 			    "ActvPtr	  Miget/Miput");
4291 			header = 1;
4292 		}
4293 
4294 		mutex_enter(&dp->dmbox.m_mutex);
4295 		idn_mainmbox_domain_report(wq, mp, domid,
4296 		    idn_domain[domid].dmbox.m_send,
4297 		    "snd");
4298 		idn_mainmbox_domain_report(wq, mp, domid,
4299 		    idn_domain[domid].dmbox.m_recv,
4300 		    "rcv");
4301 		mutex_exit(&dp->dmbox.m_mutex);
4302 
4303 		IDN_DUNLOCK(domid);
4304 
4305 		(void) mi_mpprintf(mp,
4306 		    "  ---------------------------------------"
4307 		    "------------------------"
4308 		    "----------------------------");
4309 	}
4310 
4311 	if (!header)
4312 		(void) mi_mpprintf(mp, "No ACTIVE domain connections exist");
4313 
4314 	return (0);
4315 }
4316 
4317 /*ARGSUSED*/
4318 static int
4319 idn_global_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
4320 {
4321 	int		i, nactive, masterid, nretry;
4322 	uint_t		locpfn_upper, locpfn_lower,
4323 	    rempfn_upper, rempfn_lower;
4324 	uint_t		marea_upper, marea_lower,
4325 	    iarea_upper, iarea_lower;
4326 	char		alt_dbuffer[64];
4327 	idn_retry_job_t	*rp;
4328 	domainset_t	retryset;
4329 	domainset_t	connected;
4330 	idn_synczone_t	*zp;
4331 	idn_syncop_t	*sp;
4332 	idn_domain_t	*dp;
4333 	char		*dbp, *dbuffer;
4334 
4335 	if (IDN_SYNC_TRYLOCK() == 0) {
4336 		(void) mi_mpprintf(mp, "Sync lock busy, try again.");
4337 		return (0);
4338 	}
4339 
4340 	if (IDN_GLOCK_TRY_SHARED() == 0) {
4341 		(void) mi_mpprintf(mp, "Local domain busy, try again.");
4342 		IDN_SYNC_UNLOCK();
4343 		return (0);
4344 	}
4345 	if ((dbp = dbuffer = ALLOC_DISPSTRING()) == NULL)
4346 		dbp = alt_dbuffer;
4347 
4348 	(void) mi_mpprintf(mp, "IDN\n    Global State = %s (%d)",
4349 	    idngs_str[idn.state], idn.state);
4350 
4351 	(void) mi_mpprintf(mp, "SMR");
4352 	(void) mi_mpprintf(mp, "    vaddr                ");
4353 	(void) mi_mpprintf(mp, "    0x%p", (void *)idn.smr.vaddr);
4354 
4355 	(void) mi_mpprintf(mp, "    paddr-local     paddr-remote");
4356 	masterid = IDN_GET_MASTERID();
4357 	locpfn_upper = (uint_t)(idn.smr.locpfn >> (32 - PAGESHIFT));
4358 	locpfn_lower = (uint_t)(idn.smr.locpfn << PAGESHIFT);
4359 	if (idn.smr.rempfn == PFN_INVALID) {
4360 		rempfn_upper = rempfn_lower = 0;
4361 	} else {
4362 		rempfn_upper = (uint_t)(idn.smr.rempfn >> (32 - PAGESHIFT));
4363 		rempfn_lower = (uint_t)(idn.smr.rempfn << PAGESHIFT);
4364 	}
4365 	(void) mi_mpprintf(mp, "    0x%x.%x%s0x%x.%x",
4366 	    locpfn_upper, locpfn_lower,
4367 	    HEXSPACE(locpfn_lower, locpfn_lower, 8,
4368 	    (locpfn_upper < 0x10) ? 4 : 3),
4369 	    rempfn_upper, rempfn_lower);
4370 
4371 	(void) mi_mpprintf(mp, "    SMR length  = %d MBytes", IDN_SMR_SIZE);
4372 	(void) mi_mpprintf(mp, "    SMR bufsize = %d Bytes", IDN_SMR_BUFSIZE);
4373 	(void) mi_mpprintf(mp, "    NWR length  = %d MBytes", IDN_NWR_SIZE);
4374 	marea_upper = (uint_t)((uint64_t)IDN_MBOXAREA_SIZE >> 32);
4375 	marea_lower = (uint_t)((uint64_t)IDN_MBOXAREA_SIZE & 0xffffffff);
4376 	iarea_upper = (uint_t)((uint64_t)(MB2B(IDN_NWR_SIZE) -
4377 	    (size_t)IDN_MBOXAREA_SIZE) >> 32);
4378 	iarea_lower = (uint_t)((MB2B(IDN_NWR_SIZE) -
4379 	    (size_t)IDN_MBOXAREA_SIZE) & 0xffffffff);
4380 	(void) mi_mpprintf(mp,
4381 	    "    [ mbox area = 0x%x.%x Bytes, "
4382 	    "iobuf area = 0x%x.%x Bytes ]",
4383 	    marea_upper, marea_lower, iarea_upper, iarea_lower);
4384 
4385 	(void) mi_mpprintf(mp,
4386 	    "\nIDNnet (local domain [id:%d] [name:%s] is %s)",
4387 	    idn.localid,
4388 	    idn_domain[idn.localid].dname,
4389 	    (masterid == IDN_NIL_DOMID) ? "IDLE" :
4390 	    (idn.localid == masterid) ? "MASTER" :
4391 	    "SLAVE");
4392 	nactive = 0;
4393 	for (i = 0; i < IDN_MAX_NETS; i++) {
4394 		IDN_CHAN_LOCK_GLOBAL(&idn.chan_servers[i]);
4395 		if (IDN_CHANNEL_IS_ACTIVE(&idn.chan_servers[i]))
4396 			nactive++;
4397 		IDN_CHAN_UNLOCK_GLOBAL(&idn.chan_servers[i]);
4398 	}
4399 	(void) mi_mpprintf(mp, "    I/O Networks: (Open = %d, "
4400 	    "Active = %d, Max = %d)",
4401 	    idn.nchannels, nactive, IDN_MAX_NETS);
4402 	(void) mi_mpprintf(mp, "    Number of Domains  = %d", idn.ndomains);
4403 	(void) mi_mpprintf(mp, "    Number of AWOLs    = %d", idn.nawols);
4404 	/*
4405 	 * During connect domains can possibly be in ds_connected
4406 	 * while still in ds_trans_on.  Only once they leave ds_trans_on
4407 	 * are they really connected.
4408 	 */
4409 	connected = idn.domset.ds_connected & ~idn.domset.ds_trans_on;
4410 	DOMAINSET_ADD(connected, idn.localid);
4411 	boardset2str(connected, dbp);
4412 	(void) mi_mpprintf(mp, "    Connected Domains      = %s", dbp);
4413 	domainset2str(idn.domset.ds_trans_on, dbp);
4414 	(void) mi_mpprintf(mp, "    Pending Domain Links   = %s",
4415 	    idn.domset.ds_trans_on ? dbp : "<>");
4416 	domainset2str(idn.domset.ds_trans_off, dbp);
4417 	(void) mi_mpprintf(mp, "    Pending Domain Unlinks = %s",
4418 	    idn.domset.ds_trans_off ? dbp : "<>");
4419 	mutex_enter(&idn.retryqueue.rq_mutex);
4420 	nretry = idn.retryqueue.rq_count;
4421 	retryset = 0;
4422 	for (i = 0, rp = idn.retryqueue.rq_jobs; i < nretry; i++,
4423 	    rp = rp->rj_next) {
4424 		int	domid;
4425 
4426 		domid = IDN_RETRY_TOKEN2DOMID(rp->rj_token);
4427 		if (VALID_DOMAINID(domid)) {
4428 			DOMAINSET_ADD(retryset, domid);
4429 		}
4430 	}
4431 	mutex_exit(&idn.retryqueue.rq_mutex);
4432 	domainset2str(retryset, dbp);
4433 	(void) mi_mpprintf(mp, "    Retry Jobs:Domains     = %d:%s",
4434 	    nretry, retryset ? dbp : "<>");
4435 	domainset2str(idn.domset.ds_hitlist, dbp);
4436 	(void) mi_mpprintf(mp, "    Hitlist Domains        = %s",
4437 	    idn.domset.ds_hitlist ? dbp : "<>");
4438 	domainset2str(idn.domset.ds_relink, dbp);
4439 	(void) mi_mpprintf(mp, "    Reconfig Domains       = %s",
4440 	    idn.domset.ds_relink ? dbp : "<>");
4441 	if (idn.domset.ds_relink)
4442 		(void) mi_mpprintf(mp, "         new master id = %d",
4443 		    IDN_GET_NEW_MASTERID());
4444 	if (masterid == IDN_NIL_DOMID) {
4445 		(void) mi_mpprintf(mp, "    Master Domain: no master");
4446 	} else {
4447 		idn_domain_t	*mdp;
4448 
4449 		mdp = &idn_domain[masterid];
4450 
4451 		(void) mi_mpprintf(mp,
4452 		    "    Master Domain (id:name/brds - state):");
4453 
4454 		if (strlen(mdp->dname) > 0)
4455 			(void) strcpy(dbp, mdp->dname);
4456 		else
4457 			boardset2str(mdp->dhw.dh_boardset, dbp);
4458 		if (masterid < 10)
4459 			(void) mi_mpprintf(mp, "         %d: %s - %s",
4460 			    masterid, dbp,
4461 			    idnds_str[mdp->dstate]);
4462 		else
4463 			(void) mi_mpprintf(mp, "        %d: %s - %s",
4464 			    masterid, dbp,
4465 			    idnds_str[mdp->dstate]);
4466 	}
4467 	if (idn.ndomains <= 1) {
4468 		(void) mi_mpprintf(mp, "    Slave Domains: none");
4469 	} else {
4470 		int	d;
4471 
4472 		(void) mi_mpprintf(mp,
4473 		    "    Slave Domains (id:name/brds - state):");
4474 		for (d = 0; d < MAX_DOMAINS; d++) {
4475 			dp = &idn_domain[d];
4476 
4477 			if ((dp->dcpu == IDN_NIL_DCPU) || (d == masterid))
4478 				continue;
4479 
4480 			if (strlen(dp->dname) > 0)
4481 				(void) strcpy(dbp, dp->dname);
4482 			else
4483 				boardset2str(dp->dhw.dh_boardset, dbp);
4484 			if (d < 10)
4485 				(void) mi_mpprintf(mp, "         %d: %s - %s",
4486 				    d, dbp,
4487 				    idnds_str[dp->dstate]);
4488 			else
4489 				(void) mi_mpprintf(mp, "        %d: %s - %s",
4490 				    d, dbp,
4491 				    idnds_str[dp->dstate]);
4492 		}
4493 	}
4494 
4495 	if (idn.nawols == 0) {
4496 		(void) mi_mpprintf(mp, "    AWOL Domains: none");
4497 	} else {
4498 		int	d;
4499 
4500 		(void) mi_mpprintf(mp, "    AWOL Domains (id:name/brds):");
4501 		for (d = 0; d < MAX_DOMAINS; d++) {
4502 			dp = &idn_domain[d];
4503 
4504 			if (!DOMAIN_IN_SET(idn.domset.ds_awol, d) ||
4505 			    (dp->dcpu == IDN_NIL_DCPU))
4506 				continue;
4507 
4508 			if (strlen(dp->dname) > 0)
4509 				(void) strcpy(dbp, dp->dname);
4510 			else
4511 				boardset2str(dp->dhw.dh_boardset, dbp);
4512 			if (d < 10)
4513 				(void) mi_mpprintf(mp, "         %d: %s",
4514 				    d, dbp);
4515 			else
4516 				(void) mi_mpprintf(mp, "        %d: %s",
4517 				    d, dbp);
4518 		}
4519 	}
4520 
4521 	/*CONSTCOND*/
4522 	i = IDN_SYNC_GETZONE(IDNSYNC_CONNECT);
4523 	zp = &idn.sync.sz_zone[i];
4524 	if (zp->sc_cnt == 0) {
4525 		(void) mi_mpprintf(mp, "    Sync Zone (con): [empty]");
4526 	} else {
4527 		(void) mi_mpprintf(mp, "    Sync Zone (con): [%d domains]",
4528 		    zp->sc_cnt);
4529 		sp = zp->sc_op;
4530 		for (i = 0; (i < zp->sc_cnt) && sp; i++) {
4531 			(void) mi_mpprintf(mp,
4532 			    "	             "
4533 			    "%x: x_set =%s0x%x, r_set =%s0x%x",
4534 			    sp->s_domid,
4535 			    HEXSPACE(sp->s_set_exp,
4536 			    sp->s_set_exp, 4, 1),
4537 			    sp->s_set_exp,
4538 			    HEXSPACE(sp->s_set_rdy,
4539 			    sp->s_set_rdy, 4, 1),
4540 			    sp->s_set_rdy);
4541 			sp = sp->s_next;
4542 		}
4543 	}
4544 	/*CONSTCOND*/
4545 	i = IDN_SYNC_GETZONE(IDNSYNC_DISCONNECT);
4546 	zp = &idn.sync.sz_zone[i];
4547 	if (zp->sc_cnt == 0) {
4548 		(void) mi_mpprintf(mp, "    Sync Zone (dis): [empty]");
4549 	} else {
4550 		(void) mi_mpprintf(mp, "    Sync Zone (dis): [%d domains]",
4551 		    zp->sc_cnt);
4552 		sp = zp->sc_op;
4553 		for (i = 0; (i < zp->sc_cnt) && sp; i++) {
4554 			(void) mi_mpprintf(mp,
4555 			    "	             "
4556 			    "%x: x_set =%s0x%x, r_set =%s0x%x",
4557 			    sp->s_domid,
4558 			    HEXSPACE(sp->s_set_exp,
4559 			    sp->s_set_exp, 4, 1),
4560 			    sp->s_set_exp,
4561 			    HEXSPACE(sp->s_set_rdy,
4562 			    sp->s_set_rdy, 4, 1),
4563 			    sp->s_set_rdy);
4564 			sp = sp->s_next;
4565 		}
4566 	}
4567 
4568 	IDN_GUNLOCK();
4569 	IDN_SYNC_UNLOCK();
4570 
4571 	if (dbuffer) {
4572 		FREE_DISPSTRING(dbuffer);
4573 	}
4574 
4575 	return (0);
4576 }
4577 
4578 /*ARGSUSED*/
4579 static int
4580 idn_domain_report(queue_t *wq, mblk_t *mp, caddr_t cp, cred_t *cr)
4581 {
4582 	int		d, nchan;
4583 	uint_t		domset;
4584 	idn_chanset_t	chanset;
4585 	idn_domain_t	*dp;
4586 	uint_t		pset_upper, pset_lower;
4587 	char		*dbuffer, *dbp;
4588 	char		alt_dbuffer[64];
4589 
4590 
4591 	if (IDN_SYNC_TRYLOCK() == 0) {
4592 		(void) mi_mpprintf(mp, "Sync lock busy, try again.");
4593 		return (0);
4594 	}
4595 
4596 	if (IDN_GLOCK_TRY_SHARED() == 0) {
4597 		(void) mi_mpprintf(mp, "Local domain busy, try again.");
4598 		IDN_SYNC_UNLOCK();
4599 		return (0);
4600 	}
4601 
4602 	if ((dbp = dbuffer = ALLOC_DISPSTRING()) == NULL)
4603 		dbp = alt_dbuffer;
4604 
4605 	if (cp == NULL)
4606 		domset = DOMAINSET(idn.localid);
4607 	else
4608 		domset = DOMAINSET_ALL;
4609 
4610 	for (d = 0; d < MAX_DOMAINS; d++) {
4611 
4612 		if (DOMAIN_IN_SET(domset, d) == 0)
4613 			continue;
4614 
4615 		dp = &idn_domain[d];
4616 
4617 		if (dp->dcpu == IDN_NIL_DCPU)
4618 			continue;
4619 
4620 		if (IDN_DLOCK_TRY_SHARED(d) == 0) {
4621 			if (d < 10)
4622 				(void) mi_mpprintf(mp,
4623 				    "Domain %d   (0x%p) busy...",
4624 				    d, (void *)dp);
4625 			else
4626 				(void) mi_mpprintf(mp,
4627 				    "Domain %d  (0x%p) busy...",
4628 				    d, (void *)dp);
4629 			continue;
4630 		}
4631 		if (dp->dcpu == IDN_NIL_DCPU) {
4632 			IDN_DUNLOCK(d);
4633 			continue;
4634 		}
4635 		if (d < 10)
4636 			(void) mi_mpprintf(mp, "%sDomain %d   (0x%p)",
4637 			    (d && (idn.ndomains > 1)) ? "\n" : "",
4638 			    d, (void *)dp);
4639 		else
4640 			(void) mi_mpprintf(mp, "%sDomain %d  (0x%p)",
4641 			    (d && (idn.ndomains > 1)) ? "\n" : "",
4642 			    d, (void *)dp);
4643 
4644 		if (d == idn.localid)
4645 			(void) mi_mpprintf(mp, "  (local)  State = %s (%d)",
4646 			    idnds_str[dp->dstate], dp->dstate);
4647 		else
4648 			(void) mi_mpprintf(mp, "           State = %s (%d)",
4649 			    idnds_str[dp->dstate], dp->dstate);
4650 		(void) mi_mpprintf(mp, "           Name = %s, Netid = %d",
4651 		    (strlen(dp->dname) > 0) ? dp->dname : "<>",
4652 		    (int)dp->dnetid);
4653 
4654 		CHANSET_ZERO(chanset);
4655 		nchan = idn_domain_is_registered(d, -1, &chanset);
4656 		if (dbuffer)
4657 			mask2str(chanset, dbp, 32);
4658 		else
4659 			(void) sprintf(dbp, "0x%x", chanset);
4660 		(void) mi_mpprintf(mp, "           Nchans = %d, Chanset = %s",
4661 		    nchan, nchan ? dbp : "<>");
4662 		pset_upper = UPPER32_CPUMASK(dp->dcpuset);
4663 		pset_lower = LOWER32_CPUMASK(dp->dcpuset);
4664 		if (dbuffer)
4665 			boardset2str(dp->dhw.dh_boardset, dbp);
4666 		else
4667 			(void) sprintf(dbp, "0x%x", dp->dhw.dh_boardset);
4668 
4669 		(void) mi_mpprintf(mp, "           Nboards = %d, Brdset = %s",
4670 		    dp->dhw.dh_nboards,
4671 		    dp->dhw.dh_nboards ? dbp : "<>");
4672 		(void) sprintf(dbp, "0x%x.%x", pset_upper, pset_lower);
4673 		(void) mi_mpprintf(mp, "           Ncpus = %d, Cpuset = %s",
4674 		    dp->dncpus, dp->dncpus ? dbp : "<>");
4675 		(void) mi_mpprintf(mp, "           Nmcadr = %d",
4676 		    dp->dhw.dh_nmcadr);
4677 		(void) mi_mpprintf(mp,
4678 		    "	   MsgTimer = %s  (cnt = %d)",
4679 		    (dp->dtimerq.tq_count > 0)
4680 		    ? "active" : "idle",
4681 		    dp->dtimerq.tq_count);
4682 		(void) mi_mpprintf(mp, "           Dcpu = %d  "
4683 		    "(lastcpu = %d, cpuindex = %d)",
4684 		    dp->dcpu, dp->dcpu_last, dp->dcpuindex);
4685 		(void) mi_mpprintf(mp, "           Dio = %d  "
4686 		    "(ioerr = %d, iochk = %d, iowanted = %d)",
4687 		    dp->dio, dp->dioerr, dp->diocheck ? 1 : 0,
4688 		    dp->diowanted ? 1 : 0);
4689 		if (dp->dsync.s_cmd == IDNSYNC_NIL) {
4690 			(void) mi_mpprintf(mp, "           Dsync = %s",
4691 			    idnsync_str[IDNSYNC_NIL]);
4692 		} else {
4693 			(void) mi_mpprintf(mp,
4694 			    "	   Dsync = %s "
4695 			    "(x_set = 0x%x, r_set = 0x%x)",
4696 			    idnsync_str[dp->dsync.s_cmd],
4697 			    (uint_t)dp->dsync.s_set_exp,
4698 			    (uint_t)dp->dsync.s_set_rdy);
4699 		}
4700 		(void) mi_mpprintf(mp, "           Dvote = 0x%x",
4701 		    dp->dvote.ticket);
4702 		(void) mi_mpprintf(mp, "           Dfin = %s (Sync = %s)",
4703 		    idnfin_str[dp->dfin],
4704 		    (dp->dfin_sync == IDNFIN_SYNC_OFF) ? "OFF" :
4705 		    (dp->dfin_sync == IDNFIN_SYNC_YES) ? "YES" :
4706 		    "NO");
4707 		(void) mi_mpprintf(mp, "           Dcookie_err = %s (cnt = %d)",
4708 		    dp->dcookie_err ? "YES" : "NO",
4709 		    dp->dcookie_errcnt);
4710 		IDN_DUNLOCK(d);
4711 	}
4712 
4713 	IDN_GUNLOCK();
4714 
4715 	if (dbuffer) {
4716 		FREE_DISPSTRING(dbuffer);
4717 	}
4718 
4719 	IDN_SYNC_UNLOCK();
4720 
4721 	return (0);
4722 }
4723 
4724 #define	SNOOP_ENTRIES	2048	/* power of 2 */
4725 
4726 struct snoop_buffer {
4727 /*  0 */	char	io;
4728 /*  1 */	char	board;
4729 /*  2 */	char	trans[14];
4730 
4731 /* 10 */	uint_t	xargs[4];
4732 } *snoop_data, snoop_buffer[SNOOP_ENTRIES+1];
4733 
4734 
4735 int		snoop_index;
4736 kmutex_t	snoop_mutex;
4737 static char	_bd2hexascii[] = {
4738 	'0', '1', '2', '3', '4', '5', '6', '7',
4739 	'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
4740 };
4741 
4742 #define	SNOOP_IDN(in, tr, bd, arg1, arg2, arg3, arg4) \
4743 { \
4744 	if (idn_snoop) { \
4745 		mutex_enter(&snoop_mutex); \
4746 		if (snoop_data == NULL) { \
4747 			snoop_data = (struct snoop_buffer *) \
4748 				(((uint_t)(uintptr_t)snoop_buffer + 0xf) & \
4749 				    ~0xf);				\
4750 		} \
4751 		snoop_data[snoop_index].io = ((in) == 0) ? 'o' : 'i'; \
4752 		snoop_data[snoop_index].board = \
4753 				((bd) == -1) ? 'X' : _bd2hexascii[bd]; \
4754 		(void) strncpy(snoop_data[snoop_index].trans, (tr), 14); \
4755 		snoop_data[snoop_index].xargs[0] = (arg1); \
4756 		snoop_data[snoop_index].xargs[1] = (arg2); \
4757 		snoop_data[snoop_index].xargs[2] = (arg3); \
4758 		snoop_data[snoop_index].xargs[3] = (arg4); \
4759 		snoop_index++; \
4760 		snoop_index &= SNOOP_ENTRIES - 1; \
4761 		mutex_exit(&snoop_mutex); \
4762 	} \
4763 }
4764 
4765 /*
4766  * Allocate the circular buffers to be used for
4767  * DMV interrupt processing.
4768  */
4769 static int
4770 idn_init_handler()
4771 {
4772 	int		i, c;
4773 	size_t		len;
4774 	idn_dmv_msg_t	*basep, *ivp;
4775 	uint32_t	ivp_offset;
4776 	procname_t	proc = "idn_init_handler";
4777 
4778 	if (idn.intr.dmv_data != NULL) {
4779 		cmn_err(CE_WARN,
4780 		    "IDN: 130: IDN DMV handler already initialized");
4781 		return (-1);
4782 	}
4783 
4784 	/*
4785 	 * This memory will be touched by the low-level
4786 	 * DMV trap handler for IDN.
4787 	 */
4788 	len = sizeof (idn_dmv_data_t);
4789 	len = roundup(len, sizeof (uint64_t));
4790 	len += NCPU * idn_dmv_pending_max * sizeof (idn_dmv_msg_t);
4791 	len = roundup(len, PAGESIZE);
4792 
4793 	PR_PROTO("%s: sizeof (idn_dmv_data_t) = %lu\n",
4794 	    proc, sizeof (idn_dmv_data_t));
4795 	PR_PROTO("%s: allocating %lu bytes for dmv data area\n", proc, len);
4796 
4797 	idn.intr.dmv_data_len = len;
4798 	idn.intr.dmv_data = kmem_zalloc(len, KM_SLEEP);
4799 
4800 	PR_PROTO("%s: DMV data area = %p\n", proc, (void *)idn.intr.dmv_data);
4801 
4802 	idn_dmv_data = (idn_dmv_data_t *)idn.intr.dmv_data;
4803 	basep = (idn_dmv_msg_t *)roundup((size_t)idn.intr.dmv_data +
4804 	    sizeof (idn_dmv_data_t),
4805 	    sizeof (uint64_t));
4806 	idn_dmv_data->idn_dmv_qbase = (uint64_t)basep;
4807 
4808 	ivp = basep;
4809 	ivp_offset = 0;
4810 	/*
4811 	 * The buffer queues are allocated per-cpu.
4812 	 */
4813 	for (c = 0, ivp = basep; c < NCPU; ivp++, c++) {
4814 		idn_dmv_data->idn_dmv_cpu[c].idn_dmv_current = ivp_offset;
4815 		idn_iv_queue[c] = ivp;
4816 		ivp_offset += sizeof (idn_dmv_msg_t);
4817 		for (i = 1; i < idn_dmv_pending_max; ivp++, i++) {
4818 			ivp->iv_next = ivp_offset;
4819 			ivp->iv_ready = 0;
4820 			lock_set(&ivp->iv_ready);
4821 			ivp_offset += sizeof (idn_dmv_msg_t);
4822 		}
4823 		ivp->iv_next = idn_dmv_data->idn_dmv_cpu[c].idn_dmv_current;
4824 		ivp->iv_ready = 0;
4825 		lock_set(&ivp->iv_ready);
4826 	}
4827 
4828 	idn.intr.dmv_inum = STARFIRE_DMV_IDN_BASE;
4829 	idn.intr.soft_inum = add_softintr((uint_t)idn_pil, idn_handler, 0,
4830 	    SOFTINT_ST);
4831 	idn_dmv_data->idn_soft_inum = idn.intr.soft_inum;
4832 	/*
4833 	 * Make sure everything is out there before
4834 	 * we effectively set it free for use.
4835 	 */
4836 	membar_stld_stst();
4837 
4838 	if (dmv_add_intr(idn.intr.dmv_inum, idn_dmv_handler,
4839 	    (caddr_t)idn_dmv_data)) {
4840 		idn_deinit_handler();
4841 		cmn_err(CE_WARN, "IDN: 132: failed to add IDN DMV handler");
4842 		return (-1);
4843 	}
4844 
4845 	return (0);
4846 }
4847 
4848 static void
4849 idn_deinit_handler()
4850 {
4851 	if (idn.intr.dmv_data == NULL)
4852 		return;
4853 
4854 	(void) dmv_rem_intr(idn.intr.dmv_inum);
4855 	(void) rem_softintr(idn.intr.soft_inum);
4856 	kmem_free(idn.intr.dmv_data, idn.intr.dmv_data_len);
4857 	idn.intr.dmv_data = NULL;
4858 }
4859 
4860 /*
4861  * High-level (soft interrupt) handler for DMV interrupts
4862  */
4863 /*ARGSUSED0*/
4864 static uint_t
4865 idn_handler(caddr_t unused, caddr_t unused2)
4866 {
4867 #ifdef DEBUG
4868 	int		count = 0;
4869 #endif /* DEBUG */
4870 	int		cpuid = (int)CPU->cpu_id;
4871 	ushort_t	mtype, atype;
4872 	idn_dmv_msg_t	*xp, *xplimit;
4873 	procname_t	proc = "idn_handler";
4874 
4875 	ASSERT(getpil() >= idn_pil);
4876 	flush_windows();
4877 
4878 	/*
4879 	 * Clear the synchronization flag to indicate that
4880 	 * processing has started.  As long as idn_dmv_active
4881 	 * is non-zero, idn_dmv_handler will queue work without
4882 	 * initiating a soft interrupt.  Since we clear it
4883 	 * first thing at most one pil-interrupt for IDN will
4884 	 * queue up behind the currently active one.  We don't
4885 	 * want to clear this flag at the end because it leaves
4886 	 * a window where an interrupt could get lost (unless it's
4887 	 * pushed by a subsequent interrupt).  The objective in
4888 	 * doing this is to prevent exhausting a cpu's intr_vec
4889 	 * structures with interrupts of the same pil level.
4890 	 */
4891 	lock_clear(&idn_dmv_data->idn_dmv_cpu[cpuid].idn_dmv_active);
4892 
4893 	xp = idn_iv_queue[cpuid];
4894 	xplimit = xp + idn_dmv_pending_max;
4895 	xp += idn_intr_index[cpuid];
4896 	/*
4897 	 * As long as there's stuff that's READY in the
4898 	 * queue, keep processing.
4899 	 */
4900 	while (lock_try(&xp->iv_ready)) {
4901 
4902 		ASSERT(lock_try(&xp->iv_inuse) == 0);
4903 
4904 		mtype = (ushort_t)xp->iv_mtype;
4905 		mtype &= IDNP_MSGTYPE_MASK | IDNP_ACKNACK_MASK;
4906 		atype = (ushort_t)xp->iv_atype;
4907 
4908 		if (((int)xp->iv_ver == idn.version) && mtype) {
4909 			idn_protojob_t	*jp;
4910 #ifdef DEBUG
4911 			STRING(mstr);
4912 			STRING(astr);
4913 
4914 			INUM2STR(mtype, mstr);
4915 			if ((mtype & IDNP_MSGTYPE_MASK) == 0) {
4916 				INUM2STR(atype, astr);
4917 				(void) strcat(mstr, "/");
4918 				(void) strcat(mstr, astr);
4919 			}
4920 
4921 			count++;
4922 
4923 			PR_XDC("%s:%d:%d RECV: scpu = %d, msg = 0x%x(%s)\n",
4924 			    proc, (int)xp->iv_domid, count,
4925 			    (int)xp->iv_cpuid, mtype, mstr);
4926 			PR_XDC("%s:%d:%d R-DATA: a0 = 0x%x, a1 = 0x%x\n",
4927 			    proc, (int)xp->iv_domid, count,
4928 			    xp->iv_xargs0, xp->iv_xargs1);
4929 			PR_XDC("%s:%d:%d R-DATA: a2 = 0x%x, a3 = 0x%x\n",
4930 			    proc, (int)xp->iv_domid, count,
4931 			    xp->iv_xargs2, xp->iv_xargs3);
4932 #endif /* DEBUG */
4933 
4934 			if (mtype == IDNP_DATA) {
4935 				jp = NULL;
4936 				/*
4937 				 * The only time we receive pure
4938 				 * data messages at this level is
4939 				 * to wake up the channel server.
4940 				 * Since this is often an urgent
4941 				 * request we'll do it from here
4942 				 * instead of waiting for a proto
4943 				 * server to do it.
4944 				 */
4945 				idn_signal_data_server((int)xp->iv_domid,
4946 				    (ushort_t)xp->iv_xargs0);
4947 			} else {
4948 				jp = idn_protojob_alloc(KM_NOSLEEP);
4949 				/*
4950 				 * If the allocation fails, just drop
4951 				 * the message and get on with life.
4952 				 * If memory pressure is this great then
4953 				 * dropping this message is probably
4954 				 * the least of our worries!
4955 				 */
4956 				if (jp) {
4957 					jp->j_msg.m_domid = (int)xp->iv_domid;
4958 					jp->j_msg.m_cpuid = (int)xp->iv_cpuid;
4959 					jp->j_msg.m_msgtype = mtype;
4960 					jp->j_msg.m_acktype = atype;
4961 					jp->j_msg.m_cookie = xp->iv_cookie;
4962 					SET_XARGS(jp->j_msg.m_xargs,
4963 					    xp->iv_xargs0, xp->iv_xargs1,
4964 					    xp->iv_xargs2, xp->iv_xargs3);
4965 				}
4966 
4967 			}
4968 			membar_ldst_stst();
4969 
4970 			lock_clear(&xp->iv_inuse);
4971 
4972 			if (jp)
4973 				idn_protojob_submit(jp->j_msg.m_domid, jp);
4974 		} else {
4975 			membar_ldst_stst();
4976 			IDN_GKSTAT_INC(gk_dropped_intrs);
4977 			lock_clear(&xp->iv_inuse);
4978 		}
4979 
4980 		if (++xp == xplimit)
4981 			xp = idn_iv_queue[cpuid];
4982 	}
4983 
4984 	idn_intr_index[cpuid] = xp - idn_iv_queue[cpuid];
4985 
4986 	return (DDI_INTR_CLAIMED);
4987 }
4988 
4989 void
4990 idn_awol_event_set(boardset_t boardset)
4991 {
4992 	idnsb_event_t	*sbp;
4993 	procname_t	proc = "idn_awol_event_set";
4994 
4995 	ASSERT(IDN_GLOCK_IS_EXCL());
4996 
4997 	mutex_enter(&idn.idnsb_mutex);
4998 	sbp = idn.idnsb_eventp;
4999 	if (sbp == NULL) {
5000 		cmn_err(CE_WARN, "IDN: 133: sigblock event area missing");
5001 		cmn_err(CE_CONT,
5002 		    "IDN: 134: unable to mark boardset (0x%x) AWOL\n",
5003 		    boardset);
5004 		mutex_exit(&idn.idnsb_mutex);
5005 		return;
5006 	}
5007 
5008 	if (boardset == 0) {
5009 		PR_PROTO("%s: AWOL BOARDSET is 0, NO EVENT <<<<<<<<<<<<<<<\n",
5010 		    proc);
5011 		mutex_exit(&idn.idnsb_mutex);
5012 		return;
5013 	} else {
5014 		PR_PROTO("%s: MARKING BOARDSET (0x%x) AWOL\n", proc, boardset);
5015 	}
5016 	SSIEVENT_ADD(sbp, SSIEVENT_AWOL, boardset);
5017 	mutex_exit(&idn.idnsb_mutex);
5018 }
5019 
5020 void
5021 idn_awol_event_clear(boardset_t boardset)
5022 {
5023 	idnsb_event_t	*sbp;
5024 	procname_t	proc = "idn_awol_event_clear";
5025 
5026 	ASSERT(IDN_GLOCK_IS_EXCL());
5027 
5028 	mutex_enter(&idn.idnsb_mutex);
5029 	sbp = idn.idnsb_eventp;
5030 	if (sbp == NULL) {
5031 		cmn_err(CE_WARN, "IDN: 133: sigblock event area missing");
5032 		cmn_err(CE_CONT,
5033 		    "IDN: 134: unable to mark boardset (0x%x) AWOL\n",
5034 		    boardset);
5035 		mutex_exit(&idn.idnsb_mutex);
5036 		return;
5037 	}
5038 
5039 	if (boardset == 0) {
5040 		PR_PROTO("%s: AWOL BOARDSET is 0, NO EVENT <<<<<<<<<<<<<<<\n",
5041 		    proc);
5042 		mutex_exit(&idn.idnsb_mutex);
5043 		return;
5044 	} else {
5045 		PR_PROTO("%s: CLEARING BOARDSET (0x%x) AWOL\n", proc, boardset);
5046 	}
5047 	SSIEVENT_DEL(sbp, SSIEVENT_AWOL, boardset);
5048 	mutex_exit(&idn.idnsb_mutex);
5049 }
5050 
5051 static void
5052 idn_gkstat_init()
5053 {
5054 	struct	kstat			*ksp;
5055 	struct	idn_gkstat_named	*sgkp;
5056 
5057 #ifdef	kstat
5058 	if ((ksp = kstat_create(IDNNAME, ddi_get_instance(idn.dip),
5059 	    IDNNAME, "net", KSTAT_TYPE_NAMED,
5060 	    sizeof (struct idn_gkstat_named) / sizeof (kstat_named_t),
5061 	    KSTAT_FLAG_PERSISTENT)) == NULL) {
5062 #else
5063 	if ((ksp = kstat_create(IDNNAME, ddi_get_instance(idn.dip),
5064 	    IDNNAME, "net", KSTAT_TYPE_NAMED,
5065 	    sizeof (struct idn_gkstat_named) /
5066 	    sizeof (kstat_named_t), 0)) == NULL) {
5067 #endif /* kstat */
5068 		cmn_err(CE_CONT, "IDN: 135: %s: %s\n",
5069 		    IDNNAME, "kstat_create failed");
5070 		return;
5071 	}
5072 
5073 	idn.ksp = ksp;
5074 	sgkp = (struct idn_gkstat_named *)(ksp->ks_data);
5075 	kstat_named_init(&sgkp->sk_curtime,		"curtime",
5076 	    KSTAT_DATA_ULONG);
5077 	kstat_named_init(&sgkp->sk_reconfigs,		"reconfigs",
5078 	    KSTAT_DATA_ULONG);
5079 	kstat_named_init(&sgkp->sk_reconfig_last,	"reconfig_last",
5080 	    KSTAT_DATA_ULONG);
5081 	kstat_named_init(&sgkp->sk_reaps,		"reaps",
5082 	    KSTAT_DATA_ULONG);
5083 	kstat_named_init(&sgkp->sk_reap_last,		"reap_last",
5084 	    KSTAT_DATA_ULONG);
5085 	kstat_named_init(&sgkp->sk_links,		"links",
5086 	    KSTAT_DATA_ULONG);
5087 	kstat_named_init(&sgkp->sk_link_last,		"link_last",
5088 	    KSTAT_DATA_ULONG);
5089 	kstat_named_init(&sgkp->sk_unlinks,		"unlinks",
5090 	    KSTAT_DATA_ULONG);
5091 	kstat_named_init(&sgkp->sk_unlink_last,		"unlink_last",
5092 	    KSTAT_DATA_ULONG);
5093 	kstat_named_init(&sgkp->sk_buffail,		"buf_fail",
5094 	    KSTAT_DATA_ULONG);
5095 	kstat_named_init(&sgkp->sk_buffail_last,	"buf_fail_last",
5096 	    KSTAT_DATA_ULONG);
5097 	kstat_named_init(&sgkp->sk_slabfail,		"slab_fail",
5098 	    KSTAT_DATA_ULONG);
5099 	kstat_named_init(&sgkp->sk_slabfail_last,	"slab_fail_last",
5100 	    KSTAT_DATA_ULONG);
5101 	kstat_named_init(&sgkp->sk_slabfail_last,	"slab_fail_last",
5102 	    KSTAT_DATA_ULONG);
5103 	kstat_named_init(&sgkp->sk_reap_count,		"reap_count",
5104 	    KSTAT_DATA_ULONG);
5105 	kstat_named_init(&sgkp->sk_dropped_intrs,	"dropped_intrs",
5106 	    KSTAT_DATA_ULONG);
5107 	ksp->ks_update = idn_gkstat_update;
5108 	ksp->ks_private = (void *)NULL;
5109 	kstat_install(ksp);
5110 }
5111 
5112 static void
5113 idn_gkstat_deinit()
5114 {
5115 	if (idn.ksp)
5116 		kstat_delete(idn.ksp);
5117 	idn.ksp = NULL;
5118 }
5119 
5120 static int
5121 idn_gkstat_update(kstat_t *ksp, int rw)
5122 {
5123 	struct idn_gkstat_named	*sgkp;
5124 
5125 	sgkp = (struct idn_gkstat_named *)ksp->ks_data;
5126 
5127 	if (rw == KSTAT_WRITE) {
5128 		sg_kstat.gk_reconfigs	    = sgkp->sk_reconfigs.value.ul;
5129 		sg_kstat.gk_reconfig_last   = sgkp->sk_reconfig_last.value.ul;
5130 		sg_kstat.gk_reaps	    = sgkp->sk_reaps.value.ul;
5131 		sg_kstat.gk_reap_last	    = sgkp->sk_reap_last.value.ul;
5132 		sg_kstat.gk_links	    = sgkp->sk_links.value.ul;
5133 		sg_kstat.gk_link_last	    = sgkp->sk_link_last.value.ul;
5134 		sg_kstat.gk_unlinks	    = sgkp->sk_unlinks.value.ul;
5135 		sg_kstat.gk_unlink_last	    = sgkp->sk_unlink_last.value.ul;
5136 		sg_kstat.gk_buffail	    = sgkp->sk_buffail.value.ul;
5137 		sg_kstat.gk_buffail_last    = sgkp->sk_buffail_last.value.ul;
5138 		sg_kstat.gk_slabfail	    = sgkp->sk_slabfail.value.ul;
5139 		sg_kstat.gk_slabfail_last   = sgkp->sk_slabfail_last.value.ul;
5140 		sg_kstat.gk_reap_count	    = sgkp->sk_reap_count.value.ul;
5141 		sg_kstat.gk_dropped_intrs   = sgkp->sk_dropped_intrs.value.ul;
5142 	} else {
5143 		sgkp->sk_curtime.value.ul	  = ddi_get_lbolt();
5144 		sgkp->sk_reconfigs.value.ul	  = sg_kstat.gk_reconfigs;
5145 		sgkp->sk_reconfig_last.value.ul	  = sg_kstat.gk_reconfig_last;
5146 		sgkp->sk_reaps.value.ul		  = sg_kstat.gk_reaps;
5147 		sgkp->sk_reap_last.value.ul	  = sg_kstat.gk_reap_last;
5148 		sgkp->sk_links.value.ul		  = sg_kstat.gk_links;
5149 		sgkp->sk_link_last.value.ul	  = sg_kstat.gk_link_last;
5150 		sgkp->sk_unlinks.value.ul	  = sg_kstat.gk_unlinks;
5151 		sgkp->sk_unlink_last.value.ul	  = sg_kstat.gk_unlink_last;
5152 		sgkp->sk_buffail.value.ul	  = sg_kstat.gk_buffail;
5153 		sgkp->sk_buffail_last.value.ul    = sg_kstat.gk_buffail_last;
5154 		sgkp->sk_slabfail.value.ul	  = sg_kstat.gk_slabfail;
5155 		sgkp->sk_slabfail_last.value.ul   = sg_kstat.gk_slabfail_last;
5156 		sgkp->sk_reap_count.value.ul	  = sg_kstat.gk_reap_count;
5157 		sgkp->sk_dropped_intrs.value.ul	  = sg_kstat.gk_dropped_intrs;
5158 	}
5159 
5160 	return (0);
5161 }
5162 
5163 #ifdef DEBUG
5164 #define	RW_HISTORY	100
5165 static uint_t	rw_history[NCPU][RW_HISTORY];
5166 static int	rw_index[NCPU];
5167 #endif /* DEBUG */
5168 
5169 static int
5170 idn_rw_mem(idnop_t *idnop)
5171 {
5172 	uint_t		lo_off, hi_off;
5173 	int		rw, blksize, num;
5174 	int		cpuid;
5175 	register int	n, idx;
5176 	char 		*ibuf, *obuf;
5177 	char		*smraddr;
5178 	struct seg	*segp;
5179 	ulong_t		randx;
5180 	kmutex_t	slock;
5181 	kcondvar_t	scv;
5182 	static int	orig_gstate = IDNGS_IGNORE;
5183 	extern struct  seg	ktextseg;
5184 
5185 #define	RANDOM_INIT()	(randx = ddi_get_lbolt())
5186 #define	RANDOM(a, b)	\
5187 	(((a) >= (b)) ? \
5188 	(a) : (((randx = randx * 1103515245L + 12345) % ((b)-(a))) + (a)))
5189 
5190 	RANDOM_INIT();
5191 
5192 	lo_off  = idnop->rwmem.lo_off;
5193 	hi_off  = idnop->rwmem.hi_off;
5194 	blksize = idnop->rwmem.blksize;
5195 	num	= idnop->rwmem.num;
5196 	rw	= idnop->rwmem.rw;	/* 0 = rd, 1 = wr, 2 = rd/wr */
5197 
5198 	if (((hi_off > (uint_t)MB2B(IDN_SMR_SIZE)) || (lo_off >= hi_off) ||
5199 	    (blksize <= 0) || (blksize > (hi_off - lo_off)) || (num <= 0)) &&
5200 	    (idnop->rwmem.goawol == -1)) {
5201 		return (EINVAL);
5202 	}
5203 
5204 	if (idnop->rwmem.goawol && (orig_gstate == IDNGS_IGNORE)) {
5205 		IDN_GLOCK_EXCL();
5206 		cmn_err(CE_WARN, "IDN: Local domain going into IGNORE MODE!!");
5207 		orig_gstate = idn.state;
5208 		IDN_GSTATE_TRANSITION(IDNGS_IGNORE);
5209 		IDN_GUNLOCK();
5210 
5211 	} else if (!idnop->rwmem.goawol && (orig_gstate != IDNGS_IGNORE)) {
5212 		IDN_GLOCK_EXCL();
5213 		cmn_err(CE_WARN,
5214 		    "IDN: Local domain restoring original state %s(%d)",
5215 		    idngs_str[orig_gstate], (int)orig_gstate);
5216 		IDN_GSTATE_TRANSITION(orig_gstate);
5217 		orig_gstate = IDNGS_IGNORE;
5218 		IDN_GUNLOCK();
5219 	}
5220 	/*
5221 	 * Just requested AWOL.
5222 	 */
5223 	if (num == 0)
5224 		return (0);
5225 	/*
5226 	 * Default READ only.
5227 	 */
5228 	ibuf = (char *)kmem_alloc(blksize, KM_SLEEP);
5229 	if (rw == 1) {
5230 		/*
5231 		 * WRITE only.
5232 		 */
5233 		obuf = ibuf;
5234 		ibuf = NULL;
5235 	} else if (rw == 2) {
5236 		/*
5237 		 * READ/WRITE.
5238 		 */
5239 		obuf = (char *)kmem_alloc(blksize, KM_SLEEP);
5240 		for (segp = &ktextseg; segp; segp = AS_SEGNEXT(&kas, segp)) {
5241 			if (segp->s_size >= blksize)
5242 				break;
5243 		}
5244 		if (segp == NULL) {
5245 			cmn_err(CE_WARN,
5246 			    "IDN: blksize (%d) too large", blksize);
5247 			return (EINVAL);
5248 		}
5249 		bcopy(segp->s_base, obuf, blksize);
5250 	}
5251 
5252 	mutex_init(&slock, NULL, MUTEX_DEFAULT, NULL);
5253 	cv_init(&scv, NULL, CV_DEFAULT, NULL);
5254 
5255 	cmn_err(CE_NOTE,
5256 	    "IDN: starting %s of %d blocks of %d bytes each...",
5257 	    (rw == 1) ? "W-ONLY" : (rw == 2) ? "RW" : "R-ONLY",
5258 	    num, blksize);
5259 
5260 	for (n = 0; n < num; n++) {
5261 		uint_t	rpos;
5262 
5263 		if ((hi_off - lo_off) > blksize)
5264 			rpos = RANDOM(lo_off, (hi_off - blksize));
5265 		else
5266 			rpos = lo_off;
5267 		smraddr = IDN_OFFSET2ADDR(rpos);
5268 
5269 		cpuid = (int)CPU->cpu_id;
5270 #ifdef DEBUG
5271 		idx = rw_index[cpuid]++ % RW_HISTORY;
5272 		rw_history[cpuid][idx] = rpos;
5273 #endif /* DEBUG */
5274 
5275 		switch (rw) {
5276 		case 0:
5277 			bcopy(smraddr, ibuf, blksize);
5278 			break;
5279 		case 1:
5280 			bcopy(obuf, smraddr, blksize);
5281 			break;
5282 		case 2:
5283 			if (n & 1)
5284 				bcopy(obuf, smraddr, blksize);
5285 			else
5286 				bcopy(smraddr, ibuf, blksize);
5287 			break;
5288 		default:
5289 			break;
5290 		}
5291 		if (!(n % 1000)) {
5292 			int	rv;
5293 
5294 			mutex_enter(&slock);
5295 			rv = cv_reltimedwait_sig(&scv, &slock, hz,
5296 			    TR_CLOCK_TICK);
5297 			mutex_exit(&slock);
5298 			if (rv == 0)
5299 				break;
5300 		}
5301 	}
5302 
5303 	cv_destroy(&scv);
5304 	mutex_destroy(&slock);
5305 
5306 	if (ibuf)
5307 		kmem_free(ibuf, blksize);
5308 	if (obuf)
5309 		kmem_free(obuf, blksize);
5310 
5311 	return (0);
5312 }
5313 
5314 void
5315 inum2str(uint_t inum, char str[])
5316 {
5317 	uint_t	acknack;
5318 
5319 	str[0] = '\0';
5320 
5321 	acknack = (inum & IDNP_ACKNACK_MASK);
5322 	inum &= ~IDNP_ACKNACK_MASK;
5323 
5324 	if (!inum && !acknack) {
5325 		(void) strcpy(str, idnm_str[0]);
5326 		return;
5327 	}
5328 
5329 	if (inum == 0) {
5330 		(void) strcpy(str, (acknack & IDNP_ACK) ? "ack" : "nack");
5331 	} else {
5332 		if (inum < IDN_NUM_MSGTYPES)
5333 			(void) strcpy(str, idnm_str[inum]);
5334 		else
5335 			(void) sprintf(str, "0x%x?", inum);
5336 		if (acknack) {
5337 			if (acknack & IDNP_ACK)
5338 				(void) strcat(str, "+ack");
5339 			else
5340 				(void) strcat(str, "+nack");
5341 		}
5342 	}
5343 }
5344 
5345 boardset_t
5346 cpuset2boardset(cpuset_t portset)
5347 {
5348 	register int		c;
5349 	register boardset_t	bset;
5350 
5351 	bset = 0;
5352 	for (c = 0; c < NCPU; )
5353 		if (CPU_IN_SET(portset, c)) {
5354 			BOARDSET_ADD(bset, CPUID_TO_BOARDID(c));
5355 			c = (c + 4) & ~3;
5356 		} else {
5357 			c++;
5358 		}
5359 
5360 	return (bset);
5361 }
5362 
5363 void
5364 cpuset2str(cpuset_t cset, char buffer[])
5365 {
5366 	register int	c, n;
5367 
5368 	buffer[0] = '\0';
5369 	for (c = n = 0; c < NCPU; c++) {
5370 		if (!CPU_IN_SET(cset, c))
5371 			continue;
5372 #ifdef DEBUG
5373 		if (strlen(buffer) >= _DSTRLEN) {
5374 			PR_PROTO("************* WARNING WARNING WARNING\n");
5375 			PR_PROTO("cpuset2str(cpu = %d) buffer "
5376 			    "OVERFLOW <<<<<<\n", c);
5377 			PR_PROTO("*******************************\n");
5378 			(void) sprintf(&buffer[_DSTRLEN-6], "*OVER");
5379 			return;
5380 		}
5381 #endif /* DEBUG */
5382 		if (n == 0)
5383 			(void) sprintf(buffer, "%d", c);
5384 		else
5385 			(void) sprintf(buffer, "%s, %d", buffer, c);
5386 		n++;
5387 	}
5388 }
5389 
5390 void
5391 domainset2str(domainset_t dset, char buffer[])
5392 {
5393 	/*
5394 	 * Since domainset_t and boardset_t are the
5395 	 * same (max = MAX_DOMAINS = MAX_BOARDS) we
5396 	 * can just overload boardset2str().
5397 	 */
5398 	mask2str((uint_t)dset, buffer, MAX_DOMAINS);
5399 }
5400 
5401 void
5402 boardset2str(boardset_t bset, char buffer[])
5403 {
5404 	mask2str((uint_t)bset, buffer, MAX_BOARDS);
5405 }
5406 
5407 void
5408 mask2str(uint_t mask, char buffer[], int maxnum)
5409 {
5410 	int	n, i;
5411 
5412 	buffer[0] = '\0';
5413 	for (i = n = 0; i < maxnum; i++) {
5414 		if ((mask & (1 << i)) == 0)
5415 			continue;
5416 		if (n == 0)
5417 			(void) sprintf(buffer, "%d", i);
5418 		else
5419 			(void) sprintf(buffer, "%s, %d", buffer, i);
5420 		n++;
5421 	}
5422 }
5423 
5424 int
5425 idnxdc(int domid, idn_msgtype_t *mtp,
5426 	uint_t arg1, uint_t arg2,
5427 	uint_t arg3, uint_t arg4)
5428 {
5429 	int		rv, cpuid, tcpuid;
5430 	uint_t		cookie;
5431 	uint64_t	pdata;
5432 	uint64_t	dmv_word0, dmv_word1, dmv_word2;
5433 	idn_domain_t	*dp = &idn_domain[domid];
5434 	extern kmutex_t	xc_sys_mutex;
5435 	extern int	xc_spl_enter[];
5436 	procname_t	proc = "idnxdc";
5437 
5438 
5439 	if (idn_snoop) {
5440 		int	bd;
5441 		STRING(str);
5442 		STRING(mstr);
5443 		STRING(astr);
5444 
5445 		INUM2STR(mtp->mt_mtype, mstr);
5446 		if ((mtp->mt_mtype & IDNP_MSGTYPE_MASK) == 0) {
5447 			INUM2STR(arg1, astr);
5448 			(void) sprintf(str, "%s/%s", mstr, astr);
5449 		} else {
5450 			(void) strcpy(str, mstr);
5451 		}
5452 		if (dp->dcpu == IDN_NIL_DCPU)
5453 			bd = -1;
5454 		else
5455 			bd = CPUID_TO_BOARDID(dp->dcpu);
5456 		SNOOP_IDN(0, str, bd, arg1, arg2, arg3, arg4);
5457 	}
5458 
5459 	/*
5460 	 * For NEGO messages we send the remote domain the cookie we
5461 	 * expect it to use in subsequent messages that it sends
5462 	 * to us (dcookie_recv).
5463 	 * For other messages, we must use the cookie that the
5464 	 * remote domain assigned to us for sending (dcookie_send).
5465 	 */
5466 	if ((mtp->mt_mtype & IDNP_MSGTYPE_MASK) == IDNP_NEGO)
5467 		cookie = IDN_MAKE_COOKIE(dp->dcookie_recv, mtp->mt_cookie);
5468 	else
5469 		cookie = IDN_MAKE_COOKIE(dp->dcookie_send, mtp->mt_cookie);
5470 
5471 	pdata = IDN_MAKE_PDATA(mtp->mt_mtype, mtp->mt_atype, cookie);
5472 
5473 	dmv_word0 = DMV_MAKE_DMV(idn.intr.dmv_inum, pdata);
5474 	dmv_word1 = ((uint64_t)arg1 << 32) | (uint64_t)arg2;
5475 	dmv_word2 = ((uint64_t)arg3 << 32) | (uint64_t)arg4;
5476 
5477 	ASSERT((dp->dcpu != IDN_NIL_DCPU) ||
5478 	    (dp->dcpu_last != IDN_NIL_DCPU));
5479 
5480 	tcpuid = (dp->dcpu == IDN_NIL_DCPU) ?
5481 	    dp->dcpu_last : dp->dcpu;
5482 
5483 	if (tcpuid == IDN_NIL_DCPU) {
5484 		PR_PROTO("%s:%d: cpu/cpu_last == NIL_DCPU\n",
5485 		    proc, domid);
5486 		return (-1);
5487 	}
5488 
5489 	mutex_enter(&xc_sys_mutex);
5490 	cpuid = (int)CPU->cpu_id;
5491 	xc_spl_enter[cpuid] = 1;
5492 
5493 	idnxf_init_mondo(dmv_word0, dmv_word1, dmv_word2);
5494 
5495 	rv = idnxf_send_mondo(STARFIRE_UPAID2HWMID(tcpuid));
5496 
5497 	xc_spl_enter[cpuid] = 0;
5498 	mutex_exit(&xc_sys_mutex);
5499 
5500 	return (rv);
5501 }
5502 
5503 void
5504 idnxdc_broadcast(domainset_t domset, idn_msgtype_t *mtp,
5505 		uint_t arg1, uint_t arg2,
5506 		uint_t arg3, uint_t arg4)
5507 {
5508 	int	d;
5509 
5510 	for (d = 0; d < MAX_DOMAINS; d++) {
5511 		idn_domain_t	*dp;
5512 
5513 		if (!DOMAIN_IN_SET(domset, d))
5514 			continue;
5515 
5516 		dp = &idn_domain[d];
5517 		if (dp->dcpu == IDN_NIL_DCPU)
5518 			continue;
5519 
5520 		(void) IDNXDC(d, mtp, arg1, arg2, arg3, arg4);
5521 	}
5522 }
5523 
5524 #define	PROM_SMRSIZE	0x1
5525 #define	PROM_SMRADDR	0x2
5526 #define	PROM_SMRPROPS	(PROM_SMRSIZE | PROM_SMRADDR)
5527 /*
5528  * Locate the idn-smr-size property to determine the size of the SMR
5529  * region for the SSI.  Value inherently enables/disables SSI capability.
5530  */
5531 static int
5532 idn_prom_getsmr(uint_t *smrsz, uint64_t *paddrp, uint64_t *sizep)
5533 {
5534 	pnode_t		nodeid;
5535 	int		found = 0;
5536 	int		len;
5537 	uint_t		smrsize = 0;
5538 	uint64_t	obpaddr, obpsize;
5539 	struct smraddr {
5540 		uint32_t	hi_addr;
5541 		uint32_t	lo_addr;
5542 		uint32_t	hi_size;
5543 		uint32_t	lo_size;
5544 	} smraddr;
5545 	procname_t	proc = "idn_prom_getsmr";
5546 
5547 	bzero(&smraddr, sizeof (smraddr));
5548 	/*
5549 	 * idn-smr-size is a property of the "memory" node and
5550 	 * is defined in megabytes.
5551 	 */
5552 	nodeid = prom_finddevice("/memory");
5553 
5554 	if (nodeid != OBP_NONODE) {
5555 		len = prom_getproplen(nodeid, IDN_PROP_SMRSIZE);
5556 		if (len == sizeof (smrsize)) {
5557 			(void) prom_getprop(nodeid, IDN_PROP_SMRSIZE,
5558 			    (caddr_t)&smrsize);
5559 			found |= PROM_SMRSIZE;
5560 		}
5561 		len = prom_getproplen(nodeid, IDN_PROP_SMRADDR);
5562 		if (len  == sizeof (smraddr)) {
5563 			(void) prom_getprop(nodeid, IDN_PROP_SMRADDR,
5564 			    (caddr_t)&smraddr);
5565 			found |= PROM_SMRADDR;
5566 		}
5567 	}
5568 
5569 	if (found != PROM_SMRPROPS) {
5570 		if ((found & PROM_SMRSIZE) == 0)
5571 			cmn_err(CE_WARN,
5572 			    "IDN: 136: \"%s\" property not found, "
5573 			    "disabling IDN",
5574 			    IDN_PROP_SMRSIZE);
5575 		if (smrsize && ((found & PROM_SMRADDR) == 0))
5576 			cmn_err(CE_WARN,
5577 			    "IDN: 136: \"%s\" property not found, "
5578 			    "disabling IDN",
5579 			    IDN_PROP_SMRADDR);
5580 		return (-1);
5581 	}
5582 
5583 	if (smrsize == 0) {
5584 		PR_SMR("%s: IDN DISABLED (idn_smr_size = 0)\n", proc);
5585 		cmn_err(CE_NOTE, "!IDN: 137: SMR size is 0, disabling IDN");
5586 
5587 	} else if (smrsize > IDN_SMR_MAXSIZE) {
5588 		PR_SMR("%s: IDN DISABLED (idn_smr_size too big %d > %d MB)\n",
5589 		    proc, smrsize, IDN_SMR_MAXSIZE);
5590 		cmn_err(CE_WARN,
5591 		    "!IDN: 138: SMR size (%dMB) is too big (max = %dMB), "
5592 		    "disabling IDN",
5593 		    smrsize, IDN_SMR_MAXSIZE);
5594 		smrsize = 0;
5595 	} else {
5596 		*smrsz = smrsize;
5597 		found &= ~PROM_SMRSIZE;
5598 	}
5599 
5600 	obpaddr = ((uint64_t)smraddr.hi_addr << 32) |
5601 	    (uint64_t)smraddr.lo_addr;
5602 	obpsize = ((uint64_t)smraddr.hi_size << 32) |
5603 	    (uint64_t)smraddr.lo_size;
5604 
5605 	if (obpsize == 0) {
5606 		if (smrsize > 0) {
5607 			cmn_err(CE_WARN, "!IDN: 139: OBP region for "
5608 			    "SMR is 0 length");
5609 		}
5610 	} else if (obpsize < (uint64_t)MB2B(smrsize)) {
5611 		cmn_err(CE_WARN,
5612 		    "!IDN: 140: OBP region (%ld B) smaller "
5613 		    "than requested size (%ld B)",
5614 		    obpsize, MB2B(smrsize));
5615 	} else if ((obpaddr & ((uint64_t)IDN_SMR_ALIGN - 1)) != 0) {
5616 		cmn_err(CE_WARN,
5617 		    "!IDN: 141: OBP region (0x%lx) not on (0x%x) "
5618 		    "boundary", obpaddr, IDN_SMR_ALIGN);
5619 	} else {
5620 		*sizep = obpsize;
5621 		*paddrp = obpaddr;
5622 		found &= ~PROM_SMRADDR;
5623 	}
5624 
5625 	return (found ? -1 : 0);
5626 }
5627 
5628 void
5629 idn_init_autolink()
5630 {
5631 	idnsb_event_t	*sbp;
5632 	procname_t	proc = "idn_init_autolink";
5633 
5634 	mutex_enter(&idn.idnsb_mutex);
5635 	if ((sbp = idn.idnsb_eventp) == NULL) {
5636 		PR_PROTO("%s: IDN private sigb (event) area is NULL\n", proc);
5637 		mutex_exit(&idn.idnsb_mutex);
5638 		return;
5639 	}
5640 
5641 	PR_PROTO("%s: marking domain IDN ready.\n", proc);
5642 
5643 	bzero(sbp, sizeof (*sbp));
5644 
5645 	sbp->idn_version = (uchar_t)idn.version;
5646 	SSIEVENT_SET(sbp, SSIEVENT_BOOT, 0);
5647 	(void) strncpy(sbp->idn_cookie_str, SSIEVENT_COOKIE,
5648 	    SSIEVENT_COOKIE_LEN);
5649 	mutex_exit(&idn.idnsb_mutex);
5650 }
5651 
5652 void
5653 idn_deinit_autolink()
5654 {
5655 	idnsb_event_t	*sbp;
5656 	procname_t	proc = "idn_deinit_autolink";
5657 
5658 	mutex_enter(&idn.idnsb_mutex);
5659 	if ((sbp = idn.idnsb_eventp) == NULL) {
5660 		PR_PROTO("%s: IDN private sigb (event) area is NULL\n", proc);
5661 		mutex_exit(&idn.idnsb_mutex);
5662 		return;
5663 	}
5664 
5665 	PR_PROTO("%s: marking domain IDN unavailable.\n", proc);
5666 
5667 	sbp->idn_version = (uchar_t)idn.version;
5668 	SSIEVENT_CLEAR(sbp, SSIEVENT_BOOT, 0);
5669 	(void) strncpy(sbp->idn_cookie_str, SSIEVENT_COOKIE,
5670 	    SSIEVENT_COOKIE_LEN);
5671 	mutex_exit(&idn.idnsb_mutex);
5672 }
5673 
5674 void
5675 _make64cpumask(cpuset_t *csetp, uint_t upper, uint_t lower)
5676 {
5677 	int	c;
5678 
5679 	CPUSET_ZERO(*csetp);
5680 
5681 	for (c = 0; c < 32; c++) {
5682 		if (lower & (1 << c)) {
5683 			CPUSET_ADD(*csetp, c);
5684 		}
5685 		if (upper & (1 << (c + 32))) {
5686 			CPUSET_ADD(*csetp, c + 32);
5687 		}
5688 	}
5689 }
5690 
5691 uint_t
5692 _lower32cpumask(cpuset_t cset)
5693 {
5694 	int	c;
5695 	uint_t	set = 0;
5696 
5697 	for (c = 0; c < 32; c++)
5698 		if (CPU_IN_SET(cset, c))
5699 			set |= 1 << c;
5700 
5701 	return (set);
5702 }
5703 
5704 uint_t
5705 _upper32cpumask(cpuset_t cset)
5706 {
5707 	int	c;
5708 	uint_t	set = 0;
5709 
5710 	for (c = 32; c < NCPU; c++)
5711 		if (CPU_IN_SET(cset, c))
5712 			set |= 1 << (c - 32);
5713 
5714 	return (set);
5715 }
5716 
5717 #ifdef DEBUG
5718 int
5719 debug_idnxdc(char *f, int domid, idn_msgtype_t *mtp,
5720 		uint_t a1, uint_t a2, uint_t a3, uint_t a4)
5721 {
5722 	idn_domain_t	*dp = &idn_domain[domid];
5723 	int		rv, cpuid, bd;
5724 	static int	xx = 0;
5725 	STRING(str);
5726 	STRING(mstr);
5727 	STRING(astr);
5728 
5729 	xx++;
5730 	INUM2STR(mtp->mt_mtype, mstr);
5731 	if ((mtp->mt_mtype & IDNP_MSGTYPE_MASK) == 0) {
5732 		INUM2STR(a1, astr);
5733 		(void) sprintf(str, "%s/%s", mstr, astr);
5734 	} else {
5735 		(void) strcpy(str, mstr);
5736 	}
5737 
5738 	if ((cpuid = dp->dcpu) == IDN_NIL_DCPU)
5739 		bd = -1;
5740 	else
5741 		bd = CPUID_TO_BOARDID(cpuid);
5742 
5743 	SNOOP_IDN(0, str, bd, a1, a2, a3, a4);
5744 
5745 	PR_XDC("%s:%d:%d SENT: scpu = %d, msg = 0x%x(%s)\n",
5746 	    f, domid, xx, cpuid, mtp->mt_mtype, str);
5747 	PR_XDC("%s:%d:%d S-DATA: a1 = 0x%x, a2 = 0x%x\n",
5748 	    f, domid, xx, a1, a2);
5749 	PR_XDC("%s:%d:%d S-DATA: a3 = 0x%x, a4 = 0x%x\n",
5750 	    f, domid, xx, a3, a4);
5751 
5752 	rv = idnxdc(domid, mtp, a1, a2, a3, a4);
5753 	if (rv != 0) {
5754 		PR_XDC("%s:%d:%d: WARNING: idnxdc(cpu %d) FAILED\n",
5755 		    f, domid, xx, cpuid);
5756 	}
5757 
5758 	return (rv);
5759 }
5760 
5761 caddr_t
5762 _idn_getstruct(char *structname, int size)
5763 {
5764 	caddr_t		ptr;
5765 	procname_t	proc = "GETSTRUCT";
5766 
5767 	ptr = kmem_zalloc(size, KM_SLEEP);
5768 
5769 	PR_ALLOC("%s: ptr 0x%p, struct(%s), size = %d\n",
5770 	    proc, (void *)ptr, structname, size);
5771 
5772 	return (ptr);
5773 }
5774 
5775 void
5776 _idn_freestruct(caddr_t ptr, char *structname, int size)
5777 {
5778 	procname_t	proc = "FREESTRUCT";
5779 
5780 	PR_ALLOC("%s: ptr 0x%p, struct(%s), size = %d\n",
5781 	    proc, (void *)ptr, structname, size);
5782 
5783 	ASSERT(ptr != NULL);
5784 	kmem_free(ptr, size);
5785 }
5786 #endif /* DEBUG */
5787