xref: /titanic_41/usr/src/uts/sun4u/io/gptwocfg.c (revision e4b86885570d77af552e9cf94f142f4d744fb8c8)
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 2004 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * Safari Configurator  (gptwocfg)
30  *
31  */
32 
33 #include <sys/types.h>
34 #include <sys/cred.h>
35 #include <sys/mman.h>
36 #include <sys/kmem.h>
37 #include <sys/conf.h>
38 #include <sys/cmn_err.h>
39 #include <sys/ddi.h>
40 #include <sys/sunddi.h>
41 #include <sys/sunndi.h>
42 #include <sys/modctl.h>
43 #include <sys/stat.h>
44 #include <sys/param.h>
45 #include <sys/autoconf.h>
46 #include <sys/ksynch.h>
47 #include <sys/promif.h>
48 #include <sys/ndi_impldefs.h>
49 #include <sys/ddi_impldefs.h>
50 #include <sys/gp2cfg.h>
51 #include <sys/machsystm.h>
52 #include <sys/platform_module.h>
53 #pragma weak starcat_dr_name
54 
55 #ifdef DEBUG
56 int gptwocfg_debug = 0;
57 
58 static void debug(char *, uintptr_t, uintptr_t,
59     uintptr_t, uintptr_t, uintptr_t);
60 
61 #define	GPTWO_DEBUG0(level, flag, s) if (gptwocfg_debug >= level) \
62     cmn_err(flag, s)
63 #define	GPTWO_DEBUG1(level, flag, fmt, a1) if (gptwocfg_debug >= level) \
64     debug(fmt, (uintptr_t)(a1), 0, 0, 0, 0);
65 #define	GPTWO_DEBUG2(level, flag, fmt, a1, a2) if (gptwocfg_debug >= level) \
66     debug(fmt, (uintptr_t)(a1), (uintptr_t)(a2), 0, 0, 0);
67 #define	GPTWO_DEBUG3(level, flag, fmt, a1, a2, a3) \
68     if (gptwocfg_debug >= level) \
69     debug(fmt, (uintptr_t)(a1), (uintptr_t)(a2), (uintptr_t)(a3), 0, 0);
70 #else
71 #define	GPTWO_DEBUG0(level, flag, s)
72 #define	GPTWO_DEBUG1(level, flag, fmt, a1)
73 #define	GPTWO_DEBUG2(level, flag, fmt, a1, a2)
74 #define	GPTWO_DEBUG3(level, flag, fmt, a1, a2, a3)
75 #endif
76 
77 kmutex_t gptwo_handle_list_lock;
78 gptwocfg_handle_list_t *gptwocfg_handle_list;
79 
80 static kmutex_t gptwo_config_list_lock;
81 static gptwocfg_config_t *gptwo_config_list;
82 
83 static gptwo_new_nodes_t *
84     gptwocfg_get_obp_created_nodes(dev_info_t *, uint_t);
85 
86 void (*gptwocfg_unclaim_address)(uint_t);
87 
88 extern caddr_t efcode_vaddr;
89 extern int efcode_size;
90 
91 #define		GPTWO_NUMBER_OF_DEVICE_TYPES	6
92 
93 static kmutex_t gptwocfg_ops_table_lock;
94 gptwocfg_ops_t *gptwocfg_ops_table[GPTWO_NUMBER_OF_DEVICE_TYPES];
95 
96 /*
97  * Module linkage information for the kernel.
98  */
99 
100 extern struct mod_ops mod_miscops;
101 
102 static struct modlmisc modlmisc = {
103 	&mod_miscops, /* Type of module */
104 	"gptwo configurator %I%",
105 };
106 
107 static struct modlinkage modlinkage = {
108 	MODREV_1, (void *)&modlmisc, NULL
109 };
110 
111 int
112 _init(void)
113 {
114 	unsigned int i;
115 
116 	GPTWO_DEBUG0(1, CE_WARN, "gptwocfg (Safari Configurator) "
117 	    "has been loaded\n");
118 
119 	mutex_init(&gptwo_config_list_lock, NULL, MUTEX_DRIVER, NULL);
120 	mutex_init(&gptwocfg_ops_table_lock, NULL, MUTEX_DRIVER, NULL);
121 	gptwo_config_list = NULL;
122 
123 	mutex_init(&gptwo_handle_list_lock, NULL, MUTEX_DRIVER, NULL);
124 	gptwocfg_handle_list = NULL;
125 
126 	for (i = 0; i < GPTWO_NUMBER_OF_DEVICE_TYPES; i++)
127 		gptwocfg_ops_table[i] = NULL;
128 
129 	return (mod_install(&modlinkage));
130 }
131 
132 int
133 _fini(void)
134 {
135 	int	error;
136 
137 	error = mod_remove(&modlinkage);
138 	if (error != 0) {
139 		return (error);
140 	}
141 	mutex_destroy(&gptwo_config_list_lock);
142 	mutex_destroy(&gptwocfg_ops_table_lock);
143 	mutex_destroy(&gptwo_handle_list_lock);
144 
145 	return (0);
146 }
147 
148 int
149 _info(modinfop)
150 struct modinfo *modinfop;
151 {
152 	return (mod_info(&modlinkage, modinfop));
153 }
154 
155 gptwo_new_nodes_t *
156 gptwocfg_allocate_node_list(int number_of_nodes)
157 {
158 	gptwo_new_nodes_t	*gptwo_new_nodes;
159 	int size;
160 
161 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_allocate_node_list- %d nodes",
162 	    number_of_nodes);
163 
164 	size = sizeof (gptwo_new_nodes_t) +
165 	    ((number_of_nodes -1) * sizeof (dev_info_t *));
166 
167 	gptwo_new_nodes = kmem_zalloc(size, KM_SLEEP);
168 
169 	gptwo_new_nodes->gptwo_number_of_nodes = number_of_nodes;
170 	gptwo_new_nodes->gptwo_version = GP2_VERSION;
171 
172 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_allocate_node_list- returned %p\n",
173 	    gptwo_new_nodes);
174 
175 	return (gptwo_new_nodes);
176 }
177 
178 void
179 gptwocfg_free_node_list(gptwo_new_nodes_t *gptwo_new_nodes)
180 {
181 	int size;
182 
183 	GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_free_node_list- %p %d nodes",
184 	    gptwo_new_nodes, gptwo_new_nodes->gptwo_number_of_nodes);
185 
186 	size = sizeof (gptwo_new_nodes_t) +
187 	    ((gptwo_new_nodes->gptwo_number_of_nodes - 1) *
188 	    sizeof (dev_info_t *));
189 
190 	kmem_free(gptwo_new_nodes, size);
191 }
192 
193 void
194 gptwocfg_register_ops(uint_t type, gptwo_cfgfunc_t *cfg_func,
195     gptwo_uncfgfunc_t *uncfg_func)
196 {
197 	/* KM_SLEEP guarantees success */
198 	gptwocfg_ops_t *ops = kmem_zalloc(sizeof (gptwocfg_ops_t), KM_SLEEP);
199 
200 	GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_register_ops: type=%x ops=%lx\n",
201 	    type, ops);
202 	ASSERT(type < GPTWO_NUMBER_OF_DEVICE_TYPES);
203 	ops->gptwocfg_type = type;
204 	ops->gptwocfg_version = GPTWOCFG_OPS_VERSION;
205 	ops->gptwocfg_configure = cfg_func;
206 	ops->gptwocfg_unconfigure = uncfg_func;
207 
208 	mutex_enter(&gptwocfg_ops_table_lock);
209 	gptwocfg_ops_table[type] = ops;
210 	mutex_exit(&gptwocfg_ops_table_lock);
211 }
212 
213 
214 
215 void
216 gptwocfg_unregister_ops(uint_t type)
217 {
218 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unregister_ops: type=%x\n", type);
219 
220 	ASSERT(type < GPTWO_NUMBER_OF_DEVICE_TYPES);
221 
222 	mutex_enter(&gptwocfg_ops_table_lock);
223 	kmem_free(gptwocfg_ops_table[type], sizeof (gptwocfg_ops_t));
224 	gptwocfg_ops_table[type] = NULL;
225 	mutex_exit(&gptwocfg_ops_table_lock);
226 }
227 
228 gptwocfg_cookie_t
229 gptwocfg_configure(dev_info_t *ap, spcd_t *pcd, gptwo_aid_t id)
230 {
231 	gptwo_new_nodes_t *new_nodes = NULL;
232 	gptwocfg_config_t *config;
233 	gptwocfg_ops_t *ops;
234 
235 	GPTWO_DEBUG3(1, CE_CONT, "gptwocfg_configure:  ap=0x%p pcd=%p id=%x\n",
236 	    ap, pcd, id);
237 
238 	/*
239 	 * Look to see if the port is already configured.
240 	 */
241 	mutex_enter(&gptwo_config_list_lock);
242 	config = gptwo_config_list;
243 	while (config != NULL) {
244 		if (&starcat_dr_name) {
245 			if (starcat_dr_name(ddi_node_name(ap)) < 0) {
246 				config = config->gptwo_next;
247 				continue;
248 			}
249 		}
250 		if (config->gptwo_portid == id) {
251 			cmn_err(CE_WARN, "gptwocfg: gptwocfg_configure: "
252 			    "0x%x Port already configured\n", id);
253 			mutex_exit(&gptwo_config_list_lock);
254 			return (NULL);
255 		}
256 		config = config->gptwo_next;
257 	}
258 	mutex_exit(&gptwo_config_list_lock);
259 
260 	if (pcd == NULL) {
261 		GPTWO_DEBUG0(1, CE_CONT, "gptwocfg_configure: pcd=NULL\n");
262 		return (NULL);
263 	}
264 
265 	if ((pcd->spcd_magic != PCD_MAGIC) ||
266 	    (pcd->spcd_version != PCD_VERSION)) {
267 		cmn_err(CE_WARN, "gptwocfg: Invalid Port "
268 		    "Configuration Descriptor\n");
269 		return (NULL);
270 	}
271 
272 	if (pcd->spcd_ptype >= GPTWO_NUMBER_OF_DEVICE_TYPES) {
273 		cmn_err(CE_WARN,
274 		    "gptwocfg: Invalid device type %x", pcd->spcd_ptype);
275 		return (NULL);
276 	}
277 
278 	if (pcd->spcd_prsv != SPCD_RSV_PASS) {
279 		cmn_err(CE_WARN,
280 		    "gptwocfg: Agent at ID %x has not passed test(s)\n", id);
281 		return (NULL);
282 	}
283 
284 	mutex_enter(&gptwocfg_ops_table_lock);
285 
286 	ops = gptwocfg_ops_table[pcd->spcd_ptype];
287 
288 	if (ops == NULL) {
289 		cmn_err(CE_WARN, "gptwocfg: Ops for type %x have not been "
290 		    "registered\n", pcd->spcd_ptype);
291 		mutex_exit(&gptwocfg_ops_table_lock);
292 		return (NULL);
293 	}
294 
295 	if (ops->gptwocfg_configure == NULL) {
296 		cmn_err(CE_WARN, "gptwocfg: no configure routine registered "
297 		    "for sfaari type %x\n", pcd->spcd_ptype);
298 		mutex_exit(&gptwocfg_ops_table_lock);
299 		return (NULL);
300 	}
301 
302 	new_nodes = ops->gptwocfg_configure(ap, pcd, id);
303 
304 	mutex_exit(&gptwocfg_ops_table_lock);
305 
306 	if (new_nodes != NULL) {
307 		config = kmem_zalloc(sizeof (gptwocfg_config_t), KM_SLEEP);
308 		config->gptwo_version = GP2_VERSION;
309 		config->gptwo_ap = ap;
310 		config->gptwo_portid = id;
311 		config->gptwo_nodes = new_nodes;
312 		config->gptwo_ops = ops;
313 
314 		/*
315 		 * put config on config list
316 		 */
317 		mutex_enter(&gptwo_config_list_lock);
318 		config->gptwo_next = gptwo_config_list;
319 		gptwo_config_list = config;
320 		mutex_exit(&gptwo_config_list_lock);
321 	} else {
322 		config = NULL;
323 	}
324 
325 	return ((gptwocfg_cookie_t)config);
326 }
327 
328 gptwocfg_cookie_t
329 gptwocfg_unconfigure(dev_info_t *ap, gptwo_aid_t id)
330 {
331 	int i, circ;
332 	int failure = 0;
333 	dev_info_t *saf_dip;
334 	gptwocfg_config_t *config, *temp;
335 	gptwo_new_nodes_t *obp_nodes;
336 	gptwocfg_ops_t *ops;
337 
338 	GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_unconfigure: ap=0x%p id=0x%lx\n",
339 	    ap, id);
340 
341 	mutex_enter(&gptwo_config_list_lock);
342 	config = gptwo_config_list;
343 	while (config != NULL) {
344 		if (config->gptwo_portid == id) {
345 			break;
346 		}
347 		config = config->gptwo_next;
348 	}
349 	mutex_exit(&gptwo_config_list_lock);
350 
351 	if (config == NULL) {
352 		/*
353 		 * There is no config structure associated with this agent id
354 		 * so it was probably built by firmware at start of day.  We
355 		 * need to create a config structure before we can continue.
356 		 */
357 		GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unconfigure: id=0x%lx "
358 		    "No config structure - Need to build one\n", id);
359 
360 		obp_nodes = gptwocfg_get_obp_created_nodes(ap, id);
361 
362 		if (obp_nodes != NULL) {
363 			config = kmem_zalloc(sizeof (gptwocfg_config_t),
364 			    KM_SLEEP);
365 			config->gptwo_version = GP2_VERSION;
366 			config->gptwo_ap = ap;
367 			config->gptwo_portid = id;
368 			config->gptwo_nodes = obp_nodes;
369 
370 			/*
371 			 * put config on config list
372 			 */
373 			mutex_enter(&gptwo_config_list_lock);
374 			config->gptwo_next = gptwo_config_list;
375 			gptwo_config_list = config;
376 			mutex_exit(&gptwo_config_list_lock);
377 		} else {
378 			cmn_err(CE_WARN, "gptwocfg: gptwocfg_unconfigure: "
379 			    "No OBP created nodes for ap=0x%lx agent id=0x%x",
380 			    (long)ap, id);
381 			return (NULL);
382 		}
383 	}
384 
385 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unconfigure config=0x%lx\n",
386 	    config);
387 
388 	ops = config->gptwo_ops;
389 
390 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unconfigure: ops=%lx\n", ops);
391 
392 	ndi_devi_enter(ap, &circ);
393 
394 	for (i = 0; i < config->gptwo_nodes->gptwo_number_of_nodes; i++) {
395 		dev_info_t *fdip = NULL;
396 
397 		saf_dip = config->gptwo_nodes->gptwo_nodes[i];
398 
399 		GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unconfigure saf_dip=0x%lx\n",
400 		    saf_dip);
401 
402 		if (saf_dip == NULL) {
403 			GPTWO_DEBUG0(1, CE_CONT, "gptwocfg_unconfigure: "
404 			    "skipping NULLL saf device\n");
405 
406 			continue;
407 		}
408 
409 		config->gptwo_nodes->gptwo_nodes[i] = NULL;
410 
411 		if (ops) {
412 			GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_configure "
413 			    "ops->gptwocfg_configure=%lx\n",
414 			    ops->gptwocfg_configure);
415 
416 			GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_unconfigure "
417 			    "ops->gptwocfg_unconfigure=%lx\n",
418 			    ops->gptwocfg_unconfigure);
419 
420 			if (ops->gptwocfg_unconfigure != NULL) {
421 				config->gptwo_nodes->gptwo_nodes[i] =
422 				    ops->gptwocfg_unconfigure(saf_dip);
423 
424 			}
425 		}
426 
427 		GPTWO_DEBUG1(1, CE_CONT, "e_ddi_branch_destroy <%s>\n",
428 		    ddi_get_name(saf_dip));
429 
430 		ASSERT(e_ddi_branch_held(saf_dip));
431 
432 		/*
433 		 * Don't hold parent busy when calling
434 		 * e_ddi_branch_unconfigure/destroy/referenced()
435 		 */
436 		ndi_devi_exit(ap, circ);
437 		if (e_ddi_branch_destroy(saf_dip, &fdip, 0)) {
438 			char *path = kmem_alloc(MAXPATHLEN, KM_SLEEP);
439 
440 			/*
441 			 * If non-NULL, fdip is held and must be released.
442 			 */
443 			if (fdip != NULL) {
444 				(void) ddi_pathname(fdip, path);
445 				ddi_release_devi(fdip);
446 			} else {
447 				(void) ddi_pathname(saf_dip, path);
448 			}
449 
450 			cmn_err(CE_WARN, "saf node removal failed: %s (%p)",
451 			    path, fdip ? (void *)fdip : (void *)saf_dip);
452 
453 			kmem_free(path, MAXPATHLEN);
454 
455 			config->gptwo_nodes->gptwo_nodes[i] = saf_dip;
456 			failure = 1;
457 		}
458 		ndi_devi_enter(ap, &circ);
459 	}
460 
461 	ndi_devi_exit(ap, circ);
462 
463 	if (!failure) {
464 		gptwocfg_free_node_list(config->gptwo_nodes);
465 
466 		mutex_enter(&gptwo_config_list_lock);
467 		if (gptwo_config_list == config) {
468 			gptwo_config_list = config->gptwo_next;
469 		} else {
470 			temp = gptwo_config_list;
471 			while (temp->gptwo_next != config) {
472 				temp = temp->gptwo_next;
473 			}
474 			temp->gptwo_next = config->gptwo_next;
475 		}
476 		mutex_exit(&gptwo_config_list_lock);
477 
478 		kmem_free(config, sizeof (gptwocfg_config_t));
479 		config = NULL;
480 	}
481 
482 	return (config);
483 }
484 
485 int
486 gptwocfg_next_node(gptwocfg_cookie_t c, dev_info_t *previous, dev_info_t **next)
487 {
488 	gptwocfg_config_t *cookie;
489 	int i, j;
490 
491 	GPTWO_DEBUG3(1, CE_WARN, "gptwocfg_next_node"
492 	    "(c=0x%lx, previous=0x%lx, next=0x%lx)\n", c, previous, next);
493 
494 	cookie = (gptwocfg_config_t *)c;
495 
496 	for (i = 0; i < cookie->gptwo_nodes->gptwo_number_of_nodes; i++) {
497 		GPTWO_DEBUG1(1, CE_WARN, "0x%lx\n",
498 		    cookie->gptwo_nodes->gptwo_nodes[i]);
499 	}
500 
501 	if (previous == NULL) {
502 		for (i = 0; i < cookie->gptwo_nodes->gptwo_number_of_nodes;
503 		    i++) {
504 			if (cookie->gptwo_nodes->gptwo_nodes[i]) {
505 				*next = cookie->gptwo_nodes->gptwo_nodes[i];
506 				GPTWO_DEBUG1(1, CE_WARN, "returned 0x%lx\n",
507 				    *next);
508 				return (1);
509 			}
510 		}
511 		return (0);
512 	}
513 
514 	for (i = 0; i < cookie->gptwo_nodes->gptwo_number_of_nodes; i++) {
515 		if (cookie->gptwo_nodes->gptwo_nodes[i] == previous) {
516 			for (j = i + 1;
517 			    j < cookie->gptwo_nodes->gptwo_number_of_nodes;
518 			    j++) {
519 				if (cookie->gptwo_nodes->gptwo_nodes[j]) {
520 					*next =
521 					    cookie->gptwo_nodes->gptwo_nodes[j];
522 					GPTWO_DEBUG1(1, CE_WARN,
523 					    "returned 0x%lx\n",	*next);
524 					return (1);
525 				}
526 			}
527 			*next = NULL;
528 			GPTWO_DEBUG1(1, CE_WARN, "returned 0x%lx\n",
529 			    *next);
530 			return (1);
531 		}
532 	}
533 
534 	/*
535 	 * previous is probably an invalid dev_info.
536 	 */
537 	return (0);
538 }
539 
540 static gptwo_new_nodes_t *
541 gptwocfg_get_obp_created_nodes(dev_info_t *ap, uint_t id)
542 {
543 	gptwo_new_nodes_t *obp_nodes;
544 	dev_info_t *saf_dev;
545 	int i = 0, nodes = 0;
546 	int circular_count;
547 
548 	GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_get_obp_created_nodes - ap=0x%lx "
549 	    "id=0x%x\n", ap, id);
550 
551 	ndi_devi_enter(ap, &circular_count);
552 
553 	/*
554 	 * First go through all the children of the attachment point
555 	 * to count matching safari agent ids
556 	 */
557 	saf_dev = ddi_get_child(ap);
558 	while (saf_dev != NULL) {
559 		if (ddi_getprop(DDI_DEV_T_ANY, saf_dev, DDI_PROP_DONTPASS,
560 		    "portid", -1) == id) {
561 			if (&starcat_dr_name) {
562 				if (starcat_dr_name(ddi_node_name(saf_dev))
563 				    < 0) {
564 					saf_dev = ddi_get_next_sibling(saf_dev);
565 					continue;
566 				}
567 			}
568 			nodes++;
569 		}
570 		saf_dev = ddi_get_next_sibling(saf_dev);
571 	}
572 
573 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_get_obp_created_nodes - %d nodes "
574 	    "found\n", nodes);
575 
576 	obp_nodes = gptwocfg_allocate_node_list(nodes);
577 
578 	/*
579 	 * Then fill in the nodes structure.
580 	 */
581 	saf_dev = ddi_get_child(ap);
582 	while ((saf_dev != NULL) && (i < nodes)) {
583 		if (ddi_getprop(DDI_DEV_T_ANY, saf_dev, DDI_PROP_DONTPASS,
584 		    "portid", -1) == id) {
585 			if (&starcat_dr_name) {
586 				if (starcat_dr_name(ddi_node_name(saf_dev))
587 				    < 0) {
588 					saf_dev = ddi_get_next_sibling(saf_dev);
589 					continue;
590 				}
591 			}
592 			/*
593 			 * Branch rooted at this dip must have been
594 			 * held by the DR driver.
595 			 */
596 			ASSERT(e_ddi_branch_held(saf_dev));
597 			obp_nodes->gptwo_nodes[i++] = saf_dev;
598 		}
599 		saf_dev = ddi_get_next_sibling(saf_dev);
600 	}
601 
602 	ndi_devi_exit(ap, circular_count);
603 
604 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_get_obp_created_nodes - "
605 	    "Returning 0x%lx\n", obp_nodes);
606 
607 	return (obp_nodes);
608 }
609 
610 void
611 gptwocfg_save_handle(dev_info_t *dip, fco_handle_t fco_handle)
612 {
613 	gptwocfg_handle_list_t *h;
614 
615 	GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_save_handle - "
616 	    "dip=%lx fco_handle=%lx\n", dip, fco_handle);
617 
618 	h = kmem_zalloc(sizeof (gptwocfg_handle_list_t), KM_SLEEP);
619 
620 	mutex_enter(&gptwo_handle_list_lock);
621 
622 	h->next = gptwocfg_handle_list;
623 	h->dip = dip;
624 	h->fco_handle = fco_handle;
625 	gptwocfg_handle_list = h;
626 
627 	mutex_exit(&gptwo_handle_list_lock);
628 }
629 
630 fco_handle_t
631 gptwocfg_get_handle(dev_info_t *dip)
632 {
633 	gptwocfg_handle_list_t *h, *last;
634 	fco_handle_t fco_handle;
635 
636 	mutex_enter(&gptwo_handle_list_lock);
637 
638 	h = last = gptwocfg_handle_list;
639 
640 	while (h != NULL) {
641 		if (h->dip == dip) {
642 			if (h == gptwocfg_handle_list)
643 				gptwocfg_handle_list = h->next;
644 			else
645 				last->next = h->next;
646 
647 			mutex_exit(&gptwo_handle_list_lock);
648 
649 			fco_handle = h->fco_handle;
650 
651 			kmem_free(h, sizeof (gptwocfg_handle_list_t));
652 
653 			GPTWO_DEBUG2(1, CE_CONT, "gptwocfg_get_handle - "
654 			    "dip=%lx fco_handle=%lx\n", dip, fco_handle);
655 
656 			return (fco_handle);
657 		}
658 		last = h;
659 		h = h->next;
660 	}
661 
662 	mutex_exit(&gptwo_handle_list_lock);
663 
664 	GPTWO_DEBUG1(1, CE_CONT, "gptwocfg_get_handle - dip=%lx NO HANDLE\n",
665 	    dip);
666 
667 	return (0);
668 }
669 
670 void
671 gptwocfg_devi_attach_to_parent(dev_info_t *dip)
672 {
673 	(void) i_ndi_config_node(dip, DS_LINKED, 0);
674 }
675 
676 #ifdef DEBUG
677 static void
678 debug(char *fmt, uintptr_t a1, uintptr_t a2, uintptr_t a3,
679     uintptr_t a4, uintptr_t a5)
680 {
681 	cmn_err(CE_CONT, fmt, a1, a2, a3, a4, a5);
682 }
683 #endif
684