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 /*
27  * Copyright 2023 Oxide Computer Company
28  */
29 
30 /*
31  * **********************************************************************
32  * Extension module for PCI nexus drivers to support PCI Hot Plug feature.
33  *
34  * DESCRIPTION:
35  *    This module basically implements "devctl" and Attachment Point device
36  *    nodes for hot plug operations. The cb_ops functions needed for access
37  *    to these device nodes are also implemented. For hotplug operations
38  *    on Attachment Points it interacts with the hotplug services (HPS)
39  *    framework. A pci nexus driver would simply call pcihp_init() in its
40  *    attach() function and pcihp_uninit() call in its detach() function.
41  * **********************************************************************
42  */
43 
44 #include <sys/conf.h>
45 #include <sys/kmem.h>
46 #include <sys/debug.h>
47 #include <sys/modctl.h>
48 #include <sys/autoconf.h>
49 #include <sys/ddi.h>
50 #include <sys/sunddi.h>
51 #include <sys/sunndi.h>
52 #include <sys/ddi_impldefs.h>
53 #include <sys/ndi_impldefs.h>
54 #include <sys/ddipropdefs.h>
55 #include <sys/open.h>
56 #include <sys/file.h>
57 #include <sys/stat.h>
58 #include <sys/pci.h>
59 #include <sys/pci_impl.h>
60 #include <sys/devctl.h>
61 #include <sys/hotplug/hpcsvc.h>
62 #include <sys/hotplug/pci/pcicfg.h>
63 #include <sys/hotplug/pci/pcihp.h>
64 #include <sys/sysevent.h>
65 #include <sys/sysevent/eventdefs.h>
66 #include <sys/sysevent/dr.h>
67 #include <sys/fs/dv_node.h>
68 
69 /*
70  * NOTE:
71  * This module depends on PCI Configurator module (misc/pcicfg),
72  * Hot Plug Services framework module (misc/hpcsvc) and Bus Resource
73  * Allocator module (misc/busra).
74  */
75 
76 /*
77  * ************************************************************************
78  * *** Implementation specific data structures/definitions.		***
79  * ************************************************************************
80  */
81 
82 /* soft state */
83 typedef enum { PCIHP_SOFT_STATE_CLOSED, PCIHP_SOFT_STATE_OPEN,
84 		PCIHP_SOFT_STATE_OPEN_EXCL } pcihp_soft_state_t;
85 
86 #define	PCI_MAX_DEVS	32	/* max. number of devices on a pci bus */
87 
88 /* the following correspond to sysevent defined subclasses */
89 #define	PCIHP_DR_AP_STATE_CHANGE	0
90 #define	PCIHP_DR_REQ			1
91 
92 /*  pcihp_get_soft_state() command argument */
93 #define	PCIHP_DR_NOOP			0
94 #define	PCIHP_DR_BUS_CONFIGURE		1
95 #define	PCIHP_DR_BUS_UNCONFIGURE	2
96 #define	PCIHP_DR_SLOT_ENTER		4
97 #define	PCIHP_DR_SLOT_EXIT		8
98 
99 /*  hot plug bus state */
100 enum { PCIHP_BUS_INITIALIZING, PCIHP_BUS_UNCONFIGURED,
101 		PCIHP_BUS_CONFIGURED };
102 
103 /*
104  * Soft state structure associated with each hot plug pci bus instance.
105  */
106 typedef struct pcihp {
107 	struct pcihp		*nextp;
108 
109 	/* devinfo pointer to the pci bus node */
110 	dev_info_t		*dip;
111 
112 	/* soft state flags: PCIHP_SOFT_STATE_* */
113 	pcihp_soft_state_t	soft_state;
114 
115 	/* global mutex to serialize exclusive access to the bus */
116 	kmutex_t		mutex;
117 
118 	/* slot information structure */
119 	struct pcihp_slotinfo {
120 		hpc_slot_t	slot_hdl;	/* HPS slot handle */
121 		ap_rstate_t	rstate;		/* state of Receptacle */
122 		ap_ostate_t	ostate;		/* state of the Occupant */
123 		ap_condition_t	condition;	/* condition of the occupant */
124 		time32_t	last_change;	/* XXX needed? */
125 		uint32_t	event_mask;	/* last event mask registered */
126 		char		*name;		/* slot logical name */
127 		uint_t		slot_flags;
128 		uint16_t	slot_type;	/* slot type: pci or cpci */
129 		uint16_t	slot_capabilities; /* 64bit, etc. */
130 		int		hs_csr_location; /* Location of HS_CSR */
131 		kmutex_t	slot_mutex;	/* mutex to serialize hotplug */
132 						/* operations on the slot */
133 	} slotinfo[PCI_MAX_DEVS];
134 
135 	/* misc. bus attributes */
136 	uint_t			bus_flags;
137 	uint_t			bus_state;
138 	uint_t			slots_active;
139 } pcihp_t;
140 
141 /*
142  * Bit definitions for slot_flags field:
143  *
144  *	PCIHP_SLOT_AUTO_CFG_EN	This flags is set if nexus can do auto
145  *				configuration of hot plugged card on this slot
146  *				if the hardware reports the hot plug events.
147  *
148  *	PCIHP_SLOT_DISABLED	Slot is disabled for hotplug operations.
149  *
150  *	PCIHP_SLOT_NOT_HEALTHY	HEALTHY# signal is not OK on this slot.
151  */
152 #define	PCIHP_SLOT_AUTO_CFG_EN		0x1
153 #define	PCIHP_SLOT_DISABLED		0x2
154 #define	PCIHP_SLOT_NOT_HEALTHY		0x4
155 #define	PCIHP_SLOT_DEV_NON_HOTPLUG	0x8
156 #define	PCIHP_SLOT_ENUM_INS_PENDING	0x10
157 #define	PCIHP_SLOT_ENUM_EXT_PENDING	0x20
158 
159 /*
160  * Bit definitions for bus_flags field:
161  *
162  *	PCIHP_BUS_66MHZ	Bus is running at 66Mhz.
163  */
164 #define	PCIHP_BUS_66MHZ		0x1
165 #define	PCIHP_BUS_ENUM_RADIAL	0x2
166 
167 #define	PCIHP_DEVICES_STR		"/devices"
168 
169 /*
170  * control structure for tree walk during configure/unconfigure operation.
171  */
172 struct pcihp_config_ctrl {
173 	int	pci_dev;	/* PCI device number for the slot */
174 	uint_t	flags;		/* control flags (see below) */
175 	int	op;		/* operation: PCIHP_ONLINE or PCIHP_OFFLINE */
176 	int	rv;		/* return error code */
177 	dev_info_t *dip;	/* dip at which the (first) error occurred */
178 	hpc_occupant_info_t *occupant;
179 };
180 
181 /*
182  * control flags for configure/unconfigure operations on the tree.
183  *
184  * PCIHP_CFG_CONTINUE	continue the operation ignoring errors
185  */
186 #define	PCIHP_CFG_CONTINUE	0x1
187 
188 #define	PCIHP_ONLINE	1
189 #define	PCIHP_OFFLINE	0
190 
191 
192 /* Leaf ops (hotplug controls for target devices) */
193 static int pcihp_open(dev_t *, int, int, cred_t *);
194 static int pcihp_close(dev_t, int, int, cred_t *);
195 static int pcihp_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
196 
197 #ifdef DEBUG
198 static int pcihp_debug = 0;
199 #define	PCIHP_DEBUG(args)	if (pcihp_debug >= 1) cmn_err args
200 #define	PCIHP_DEBUG2(args)	if (pcihp_debug >= 2) cmn_err args
201 #else
202 #define	PCIHP_DEBUG(args)
203 #define	PCIHP_DEBUG2(args)
204 #endif
205 
206 /*
207  * We process ENUM# event one device at a time ie. as soon as we detect
208  * that a device has the right ENUM# conditions, we return. If the following
209  * variable is set to non-zero, we scan all the devices on the bus
210  * for ENUM# conditions.
211  */
212 static int pcihp_enum_scan_all = 0;
213 /*
214  * If HSC driver cannot determine the board type (for example: it may not
215  * be possible to differentiate between a Basic Hotswap, Non Hotswap or
216  * Non-friendly Full hotswap board), the default board type is assigned
217  * to be as defined by the following variable.
218  */
219 static int pcihp_cpci_board_type = HPC_BOARD_CPCI_NON_HS;
220 static int pcihp_cpci_led_blink = 30;
221 /*
222  * It was noted that the blue LED when written on/off would cause INS/EXT
223  * bit to be set causing an extra interrupt. Although the cPCI specifications
224  * does not imply this, this behavior is seen with some FHS silicons.
225  * Also, handling the INS/EXT bit would control the LED being On/Off.
226  * Until the behavior is confirmed, this flag could be used to enable or
227  * disable handling the LED.
228  * 0 means the silicons handles the LED behavior via the INS/EXT bit.
229  * 1 means the software must explicitly do the LED behavior.
230  */
231 static int pcihp_cpci_blue_led = 1;
232 
233 /* static functions */
234 static pcihp_t *pcihp_create_soft_state(dev_info_t *dip);
235 static void pcihp_destroy_soft_state(dev_info_t *dip);
236 static pcihp_t *pcihp_get_soft_state(dev_info_t *dip, int cmd, int *rv);
237 static int pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev);
238 static int pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev);
239 static int pcihp_new_slot_state(dev_info_t *, hpc_slot_t,
240 	hpc_slot_info_t *, int);
241 static int pcihp_configure(dev_info_t *, void *);
242 static bool_t pcihp_check_status(dev_info_t *);
243 static int pcihp_event_handler(caddr_t, uint_t);
244 static dev_info_t *pcihp_devi_find(dev_info_t *dip, uint_t dev, uint_t func);
245 static int pcihp_match_dev(dev_info_t *dip, void *hdl);
246 static int pcihp_get_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t,
247 	uint8_t *);
248 static void pcihp_set_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t,
249 	uint8_t *);
250 static int pcihp_get_hs_csr_location(ddi_acc_handle_t);
251 static int pcihp_handle_enum(pcihp_t *, int, int, int);
252 static void pcihp_hs_csr_op(pcihp_t *, int, int);
253 static int pcihp_enum_slot(pcihp_t *, struct pcihp_slotinfo *, int, int, int);
254 static int pcihp_handle_enum_extraction(pcihp_t *, int, int, int);
255 static int pcihp_handle_enum_insertion(pcihp_t *, int, int, int);
256 static int pcihp_add_dummy_reg_property(dev_info_t *, uint_t, uint_t, uint_t);
257 static int pcihp_config_setup(dev_info_t **, ddi_acc_handle_t *,
258 			dev_info_t **, int, pcihp_t *);
259 static void pcihp_config_teardown(ddi_acc_handle_t *,
260 			dev_info_t **, int, pcihp_t *);
261 static int pcihp_get_board_type(struct pcihp_slotinfo *);
262 /* sysevent function */
263 static void pcihp_gen_sysevent(char *, int, int, dev_info_t *, int);
264 
265 static int pcihp_list_occupants(dev_info_t *, void *);
266 static int pcihp_indirect_map(dev_info_t *dip);
267 
268 #if 0
269 static void pcihp_probe_slot_state(dev_info_t *, int, hpc_slot_state_t *);
270 #endif
271 
272 int pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op,
273     int flags, char *name, caddr_t valuep, int *lengthp);
274 
275 struct cb_ops pcihp_cb_ops = {
276 	pcihp_open,			/* open */
277 	pcihp_close,			/* close */
278 	nodev,				/* strategy */
279 	nodev,				/* print */
280 	nodev,				/* dump */
281 	nodev,				/* read */
282 	nodev,				/* write */
283 	pcihp_ioctl,			/* ioctl */
284 	nodev,				/* devmap */
285 	nodev,				/* mmap */
286 	nodev,				/* segmap */
287 	nochpoll,			/* poll */
288 	pcihp_prop_op,			/* cb_prop_op */
289 	NULL,				/* streamtab */
290 	D_NEW | D_MP | D_HOTPLUG,	/* Driver compatibility flag */
291 	CB_REV,				/* rev */
292 	nodev,				/* int (*cb_aread)() */
293 	nodev				/* int (*cb_awrite)() */
294 };
295 
296 /*
297  * local data
298  */
299 
300 int pcihp_autocfg_enabled = 1; /* auto config is enabled by default */
301 
302 static kmutex_t pcihp_mutex; /* mutex to protect the following data */
303 static pcihp_t *pcihp_head = NULL;
304 
305 static kmutex_t pcihp_open_mutex; /* mutex to protect open/close/uninit */
306 static int	pci_devlink_flags = 0;
307 
308 /*
309  * Module linkage information for the kernel.
310  */
311 extern struct mod_ops mod_miscops;
312 static struct modlmisc modlmisc = {
313 	&mod_miscops,
314 	"PCI nexus hotplug support",
315 };
316 
317 static struct modlinkage modlinkage = {
318 	MODREV_1,
319 	&modlmisc,
320 	NULL
321 };
322 
323 int
_init(void)324 _init(void)
325 {
326 	int error;
327 
328 	mutex_init(&pcihp_mutex, NULL, MUTEX_DRIVER, NULL);
329 	mutex_init(&pcihp_open_mutex, NULL, MUTEX_DRIVER, NULL);
330 	if ((error = mod_install(&modlinkage)) != 0) {
331 		mutex_destroy(&pcihp_open_mutex);
332 		mutex_destroy(&pcihp_mutex);
333 	}
334 
335 	return (error);
336 }
337 
338 int
_fini(void)339 _fini(void)
340 {
341 	return (EBUSY);
342 }
343 
344 int
_info(struct modinfo * modinfop)345 _info(struct modinfo *modinfop)
346 {
347 	return (mod_info(&modlinkage, modinfop));
348 }
349 
350 static	pcihp_t *
pcihp_create_soft_state(dev_info_t * dip)351 pcihp_create_soft_state(
352 	dev_info_t *dip)
353 {
354 	pcihp_t	*pcihp_p;
355 
356 	pcihp_p = kmem_zalloc(sizeof (struct pcihp), KM_SLEEP);
357 
358 	pcihp_p->dip = dip;
359 	mutex_init(&pcihp_p->mutex, NULL, MUTEX_DRIVER, NULL);
360 
361 	mutex_enter(&pcihp_mutex);
362 	pcihp_p->nextp = pcihp_head;
363 	pcihp_head = pcihp_p;
364 	pcihp_p->bus_state = PCIHP_BUS_INITIALIZING;
365 	pcihp_p->slots_active = 0;
366 	mutex_exit(&pcihp_mutex);
367 
368 	return (pcihp_p);
369 }
370 
371 static	void
pcihp_destroy_soft_state(dev_info_t * dip)372 pcihp_destroy_soft_state(
373 	dev_info_t *dip)
374 {
375 	pcihp_t	*p;
376 	pcihp_t	**pp;
377 
378 	mutex_enter(&pcihp_mutex);
379 	pp = &pcihp_head;
380 	while ((p = *pp) != NULL) {
381 		if (p->dip == dip) {
382 			*pp = p->nextp;
383 			kmem_free(p, sizeof (struct pcihp));
384 			break;
385 		}
386 		pp = &(p->nextp);
387 	}
388 	mutex_exit(&pcihp_mutex);
389 }
390 
391 /*
392  * This function should be imported by client nexus drivers as their
393  * devo_getinfo() entry point.
394  */
395 
396 /* ARGSUSED */
397 int
pcihp_info(dev_info_t * dip,ddi_info_cmd_t cmd,void * arg,void ** result)398 pcihp_info(
399 	dev_info_t	*dip,
400 	ddi_info_cmd_t	cmd,
401 	void		*arg,
402 	void		**result)
403 {
404 	pcihp_t		*pcihp_p;
405 	major_t		major;
406 	minor_t		minor;
407 	int		instance;
408 
409 	major = getmajor((dev_t)arg);
410 	minor = getminor((dev_t)arg);
411 	instance = PCIHP_AP_MINOR_NUM_TO_INSTANCE(minor);
412 
413 	switch (cmd) {
414 	default:
415 		return (DDI_FAILURE);
416 
417 	case DDI_INFO_DEVT2INSTANCE:
418 		*result = (void *)(intptr_t)instance;
419 		return (DDI_SUCCESS);
420 
421 	case DDI_INFO_DEVT2DEVINFO:
422 		mutex_enter(&pcihp_mutex);
423 		pcihp_p = pcihp_head;
424 		while (pcihp_p != NULL) {
425 			if (ddi_driver_major(pcihp_p->dip) ==
426 			    major && ddi_get_instance(pcihp_p->dip) ==
427 			    instance) {
428 				*result = (void *)pcihp_p->dip;
429 				mutex_exit(&pcihp_mutex);
430 				return (DDI_SUCCESS);
431 			}
432 			pcihp_p = pcihp_p->nextp;
433 		}
434 		mutex_exit(&pcihp_mutex);
435 		return (DDI_FAILURE);
436 	}
437 }
438 
439 /*
440  * This function retrieves the hot plug soft state and performs the
441  * following primitive commands while the soft state is locked:
442  * mark the bus unconfigured, increment slot activity, decrement
443  * slot activity and noop.
444  */
445 
446 /* ARGSUSED */
447 static	pcihp_t *
pcihp_get_soft_state(dev_info_t * dip,int cmd,int * rv)448 pcihp_get_soft_state(
449 	dev_info_t	*dip, int cmd, int *rv)
450 {
451 	pcihp_t		*pcihp_p;
452 
453 	*rv = PCIHP_SUCCESS;
454 	mutex_enter(&pcihp_mutex);
455 	pcihp_p = pcihp_head;
456 	while (pcihp_p != NULL) {
457 		if (pcihp_p->dip == dip) {
458 			switch (cmd) {
459 			case PCIHP_DR_BUS_UNCONFIGURE:
460 				if (pcihp_p->slots_active == 0)
461 					pcihp_p->bus_state =
462 					    PCIHP_BUS_UNCONFIGURED;
463 				else
464 					*rv = PCIHP_FAILURE;
465 				break;
466 			case PCIHP_DR_SLOT_ENTER:
467 				if (pcihp_p->bus_state ==
468 				    PCIHP_BUS_UNCONFIGURED)
469 					*rv = PCIHP_FAILURE;
470 				else
471 					pcihp_p->slots_active++;
472 				break;
473 			case PCIHP_DR_SLOT_EXIT:
474 				ASSERT(pcihp_p->slots_active > 0);
475 				if (pcihp_p->slots_active == 0)
476 					cmn_err(CE_PANIC,
477 					    "pcihp (%s%d): mismatched slot"
478 					    " activity",
479 					    ddi_driver_name(dip),
480 					    ddi_get_instance(dip));
481 				else
482 					pcihp_p->slots_active--;
483 				break;
484 			case PCIHP_DR_NOOP:
485 				break;
486 			default:
487 				*rv = PCIHP_FAILURE;
488 				break;
489 			}
490 			mutex_exit(&pcihp_mutex);
491 			return (pcihp_p);
492 		}
493 		pcihp_p = pcihp_p->nextp;
494 	}
495 	mutex_exit(&pcihp_mutex);
496 
497 	return (NULL);
498 }
499 
500 /* ARGSUSED3 */
501 static int
pcihp_open(dev_t * devp,int flags,int otyp,cred_t * credp)502 pcihp_open(dev_t *devp, int flags, int otyp, cred_t *credp)
503 {
504 	dev_info_t *self;
505 	pcihp_t *pcihp_p;
506 	minor_t	minor;
507 	int pci_dev;
508 	int rv;
509 
510 	/*
511 	 * Make sure the open is for the right file type.
512 	 */
513 	if (otyp != OTYP_CHR)
514 		return (EINVAL);
515 
516 	mutex_enter(&pcihp_open_mutex);
517 	/*
518 	 * Get the soft state structure.
519 	 */
520 	if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)*devp,
521 	    (void **)&self) != DDI_SUCCESS) {
522 		mutex_exit(&pcihp_open_mutex);
523 		return (ENXIO);
524 	}
525 
526 	pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv);
527 	ASSERT(pcihp_p != NULL);
528 
529 	mutex_enter(&pcihp_p->mutex);
530 
531 	/*
532 	 * If the pci_dev is valid then the minor device is an
533 	 * AP. Otherwise it is ":devctl" minor device.
534 	 */
535 	minor = getminor(*devp);
536 	pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(minor);
537 	if (pci_dev < PCI_MAX_DEVS) {
538 		struct pcihp_slotinfo *slotinfop;
539 
540 		slotinfop = &pcihp_p->slotinfo[pci_dev];
541 		if (slotinfop->slot_hdl == NULL) {
542 			mutex_exit(&pcihp_p->mutex);
543 			mutex_exit(&pcihp_open_mutex);
544 			return (ENXIO);
545 		}
546 	}
547 
548 	/*
549 	 * Handle the open by tracking the device state.
550 	 *
551 	 * Note: Needs review w.r.t exclusive access to AP or the bus.
552 	 * Currently in the pci plug-in we don't use EXCL open at all
553 	 * so the code below implements EXCL access on the bus.
554 	 */
555 
556 	/* enforce exclusive access to the bus */
557 	if ((pcihp_p->soft_state == PCIHP_SOFT_STATE_OPEN_EXCL) ||
558 	    ((flags & FEXCL) &&
559 	    (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED))) {
560 		mutex_exit(&pcihp_p->mutex);
561 		mutex_exit(&pcihp_open_mutex);
562 		return (EBUSY);
563 	}
564 
565 	if (flags & FEXCL)
566 		pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN_EXCL;
567 	else
568 		pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN;
569 
570 	mutex_exit(&pcihp_p->mutex);
571 	mutex_exit(&pcihp_open_mutex);
572 
573 	return (0);
574 }
575 
576 /* ARGSUSED */
577 static int
pcihp_close(dev_t dev,int flags,int otyp,cred_t * credp)578 pcihp_close(dev_t dev, int flags, int otyp, cred_t *credp)
579 {
580 	dev_info_t *self;
581 	pcihp_t *pcihp_p;
582 	int rv;
583 
584 	if (otyp != OTYP_CHR)
585 		return (EINVAL);
586 
587 	mutex_enter(&pcihp_open_mutex);
588 
589 	if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev,
590 	    (void **)&self) != DDI_SUCCESS) {
591 		mutex_exit(&pcihp_open_mutex);
592 		return (ENXIO);
593 	}
594 
595 	pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv);
596 	ASSERT(pcihp_p != NULL);
597 
598 	mutex_enter(&pcihp_p->mutex);
599 	pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED;
600 	mutex_exit(&pcihp_p->mutex);
601 
602 	mutex_exit(&pcihp_open_mutex);
603 
604 	return (0);
605 }
606 
607 static int
pcihp_list_occupants(dev_info_t * dip,void * hdl)608 pcihp_list_occupants(dev_info_t *dip, void *hdl)
609 {
610 	int pci_dev;
611 	struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl;
612 	pci_regspec_t *pci_rp;
613 	int length;
614 	major_t major;
615 
616 	/*
617 	 * Get the PCI device number information from the devinfo
618 	 * node. Since the node may not have the address field
619 	 * setup (this is done in the DDI_INITCHILD of the parent)
620 	 * we look up the 'reg' property to decode that information.
621 	 */
622 	if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip,
623 	    DDI_PROP_DONTPASS, "reg", (int **)&pci_rp,
624 	    (uint_t *)&length) != DDI_PROP_SUCCESS) {
625 		ctrl->rv = DDI_FAILURE;
626 		ctrl->dip = dip;
627 		return (DDI_WALK_TERMINATE);
628 	}
629 
630 	/* get the pci device id information */
631 	pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi);
632 
633 	/*
634 	 * free the memory allocated by ddi_prop_lookup_int_array
635 	 */
636 	ddi_prop_free(pci_rp);
637 
638 	/*
639 	 * Match the node for the device number of the slot.
640 	 */
641 	if (pci_dev == ctrl->pci_dev) { /* node is a match */
642 
643 		major = ddi_driver_major(dip);
644 
645 		/*
646 		 * If the node is not yet attached, then don't list it
647 		 * as an occupant. This is valid, since nothing can be
648 		 * consuming it until it is attached, and cfgadm will
649 		 * ask for the property explicitly which will cause it
650 		 * to be re-freshed right before checking with rcm.
651 		 */
652 		if ((major == -1) || !i_ddi_devi_attached(dip))
653 			return (DDI_WALK_PRUNECHILD);
654 
655 		/*
656 		 * If we have used all our occupants then print mesage
657 		 * and terminate walk.
658 		 */
659 		if (ctrl->occupant->i >= HPC_MAX_OCCUPANTS) {
660 			cmn_err(CE_WARN,
661 			    "pcihp (%s%d): unable to list all occupants",
662 			    ddi_driver_name(ddi_get_parent(dip)),
663 			    ddi_get_instance(ddi_get_parent(dip)));
664 			return (DDI_WALK_TERMINATE);
665 		}
666 
667 		/*
668 		 * No need to hold the dip as ddi_walk_devs
669 		 * has already arranged that for us.
670 		 */
671 		ctrl->occupant->id[ctrl->occupant->i] =
672 		    kmem_alloc(sizeof (char[MAXPATHLEN]), KM_SLEEP);
673 		(void) ddi_pathname(dip,
674 		    (char *)ctrl->occupant->id[ctrl->occupant->i]);
675 		ctrl->occupant->i++;
676 	}
677 
678 	/*
679 	 * continue the walk to the next sibling to look for a match
680 	 * or to find other nodes if this card is a multi-function card.
681 	 */
682 	return (DDI_WALK_PRUNECHILD);
683 }
684 
685 static void
pcihp_create_occupant_props_nolock(dev_info_t * self,dev_t dev,int pci_dev)686 pcihp_create_occupant_props_nolock(dev_info_t *self, dev_t dev, int pci_dev)
687 {
688 	struct pcihp_config_ctrl ctrl;
689 	hpc_occupant_info_t *occupant;
690 	int i;
691 
692 	occupant = kmem_alloc(sizeof (hpc_occupant_info_t), KM_SLEEP);
693 	occupant->i = 0;
694 
695 	ctrl.flags = 0;
696 	ctrl.dip = NULL;
697 	ctrl.rv = NDI_SUCCESS;
698 	ctrl.pci_dev = pci_dev;
699 	ctrl.op = 55; /* should define DRYRUN */
700 	ctrl.occupant = occupant;
701 
702 	ddi_walk_devs(ddi_get_child(self), pcihp_list_occupants,
703 	    (void *)&ctrl);
704 
705 	if (occupant->i == 0) {
706 		/* no occupants right now, need to create stub property */
707 		char *c[] = { "" };
708 		(void) ddi_prop_update_string_array(dev, self, "pci-occupant",
709 		    c, 1);
710 	} else {
711 		(void) ddi_prop_update_string_array(dev, self, "pci-occupant",
712 		    occupant->id, occupant->i);
713 	}
714 	for (i = 0; i < occupant->i; i++) {
715 		kmem_free(occupant->id[i], sizeof (char[MAXPATHLEN]));
716 	}
717 
718 	kmem_free(occupant, sizeof (hpc_occupant_info_t));
719 }
720 
721 static void
pcihp_create_occupant_props(dev_info_t * self,dev_t dev,int pci_dev)722 pcihp_create_occupant_props(dev_info_t *self, dev_t dev, int pci_dev)
723 {
724 	ndi_devi_enter(self);
725 	pcihp_create_occupant_props_nolock(self, dev, pci_dev);
726 	ndi_devi_exit(self);
727 }
728 
729 static void
pcihp_delete_occupant_props(dev_info_t * dip,dev_t dev)730 pcihp_delete_occupant_props(dev_info_t *dip, dev_t dev)
731 {
732 	if (ddi_prop_remove(dev, dip, "pci-occupant")
733 	    != DDI_PROP_SUCCESS)
734 		return; /* add error handling */
735 
736 }
737 
738 /*
739  * pcihp_ioctl: devctl hotplug controls
740  */
741 /* ARGSUSED */
742 static int
pcihp_ioctl(dev_t dev,int cmd,intptr_t arg,int mode,cred_t * credp,int * rvalp)743 pcihp_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp,
744     int *rvalp)
745 {
746 	pcihp_t *pcihp_p;
747 	dev_info_t *self;
748 	struct devctl_iocdata *dcp;
749 	uint_t bus_state;
750 	int rv = 0;
751 	int pci_dev;
752 	struct pcihp_slotinfo *slotinfop;
753 	hpc_slot_state_t rstate;
754 	devctl_ap_state_t ap_state;
755 	struct hpc_control_data hpc_ctrldata;
756 	struct hpc_led_info led_info;
757 	time_t time;
758 	int state_locking;
759 	int state_unlocking;
760 	int rval;
761 	char *pathname = NULL;
762 
763 	/*
764 	 * read devctl ioctl data before soft state retrieval
765 	 */
766 	if ((cmd != DEVCTL_AP_CONTROL) &&
767 	    ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS)
768 		return (EFAULT);
769 
770 	if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev,
771 	    (void **)&self) != DDI_SUCCESS) {
772 		if (cmd != DEVCTL_AP_CONTROL)
773 			ndi_dc_freehdl(dcp);
774 		return (ENXIO);
775 	}
776 
777 	switch (cmd) {
778 	case DEVCTL_AP_INSERT:
779 	case DEVCTL_AP_REMOVE:
780 	case DEVCTL_AP_CONNECT:
781 	case DEVCTL_AP_DISCONNECT:
782 	case DEVCTL_AP_CONFIGURE:
783 	case DEVCTL_AP_UNCONFIGURE:
784 	case DEVCTL_AP_GETSTATE:
785 	case DEVCTL_AP_CONTROL:
786 		state_locking = PCIHP_DR_SLOT_ENTER;
787 		state_unlocking = PCIHP_DR_SLOT_EXIT;
788 		break;
789 	default:
790 		state_locking = PCIHP_DR_NOOP;
791 		state_unlocking = PCIHP_DR_NOOP;
792 		break;
793 	}
794 
795 	pcihp_p = pcihp_get_soft_state(self, state_locking, &rval);
796 	ASSERT(pcihp_p != NULL);
797 
798 	if (rval == PCIHP_FAILURE) {
799 		(void) ddi_pathname(pcihp_p->dip, pathname);
800 		PCIHP_DEBUG((CE_WARN, "Hot Plug bus %s instance is unconfigured"
801 		    " while slot activity is requested\n", pathname));
802 		if (cmd != DEVCTL_AP_CONTROL)
803 			ndi_dc_freehdl(dcp);
804 		return (EBUSY);
805 	}
806 
807 	/*
808 	 * For attachment points the lower 8 bits of the minor number is the
809 	 * PCI device number.
810 	 */
811 	pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev));
812 
813 	/*
814 	 * We can use the generic implementation for these ioctls
815 	 */
816 	switch (cmd) {
817 	case DEVCTL_DEVICE_GETSTATE:
818 	case DEVCTL_DEVICE_ONLINE:
819 	case DEVCTL_DEVICE_OFFLINE:
820 	case DEVCTL_BUS_GETSTATE:
821 		rv = ndi_devctl_ioctl(self, cmd, arg, mode, 0);
822 		ndi_dc_freehdl(dcp);
823 		return (rv);
824 	default:
825 		break;
826 	}
827 
828 	switch (cmd) {
829 
830 	case DEVCTL_DEVICE_RESET:
831 		rv = ENOTSUP;
832 		break;
833 
834 	case DEVCTL_BUS_QUIESCE:
835 		if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS)
836 			if (bus_state == BUS_QUIESCED)
837 				break;
838 		(void) ndi_set_bus_state(self, BUS_QUIESCED);
839 		break;
840 
841 	case DEVCTL_BUS_UNQUIESCE:
842 		if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS)
843 			if (bus_state == BUS_ACTIVE)
844 				break;
845 		(void) ndi_set_bus_state(self, BUS_ACTIVE);
846 		break;
847 
848 	case DEVCTL_BUS_RESET:
849 		rv = ENOTSUP;
850 		break;
851 
852 	case DEVCTL_BUS_RESETALL:
853 		rv = ENOTSUP;
854 		break;
855 
856 	case DEVCTL_AP_CONNECT:
857 	case DEVCTL_AP_DISCONNECT:
858 		/*
859 		 * CONNECT(DISCONNECT) the hot plug slot to(from) the bus.
860 		 *
861 		 * For cPCI slots this operation is a nop so the HPC
862 		 * driver may return success if it is a valid operation.
863 		 */
864 	case DEVCTL_AP_INSERT:
865 	case DEVCTL_AP_REMOVE:
866 		/*
867 		 * Prepare the slot for INSERT/REMOVE operation.
868 		 */
869 
870 		/*
871 		 * check for valid request:
872 		 *	1. It is a hotplug slot.
873 		 *	2. The slot has no occupant that is in
874 		 *	   the 'configured' state.
875 		 */
876 		if (pci_dev >= PCI_MAX_DEVS) {
877 			rv = ENXIO;
878 			break;
879 		}
880 		slotinfop = &pcihp_p->slotinfo[pci_dev];
881 
882 		mutex_enter(&slotinfop->slot_mutex);
883 
884 		if ((slotinfop->slot_hdl == NULL) ||
885 		    (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) {
886 			rv = ENXIO;
887 			mutex_exit(&slotinfop->slot_mutex);
888 			break;
889 		}
890 
891 		/* the slot occupant must be in the UNCONFIGURED state */
892 		if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) {
893 			rv = EINVAL;
894 			mutex_exit(&slotinfop->slot_mutex);
895 			break;
896 		}
897 		/*
898 		 * Call the HPC driver to perform the operation on the slot.
899 		 */
900 
901 		switch (cmd) {
902 		case DEVCTL_AP_INSERT:
903 			rv = hpc_nexus_insert(slotinfop->slot_hdl, NULL, 0);
904 			break;
905 		case DEVCTL_AP_REMOVE:
906 			rv = hpc_nexus_remove(slotinfop->slot_hdl, NULL, 0);
907 			break;
908 		case DEVCTL_AP_CONNECT:
909 			rv = hpc_nexus_connect(slotinfop->slot_hdl, NULL, 0);
910 			if (rv == HPC_SUCCESS) {
911 				slotinfop->rstate = AP_RSTATE_CONNECTED;
912 
913 				if (drv_getparm(TIME, (void *)&time) !=
914 				    DDI_SUCCESS)
915 					slotinfop->last_change = (time_t)-1;
916 				else
917 					slotinfop->last_change = (time32_t)time;
918 
919 				slotinfop = &pcihp_p->slotinfo[pci_dev];
920 				pcihp_gen_sysevent(slotinfop->name,
921 				    PCIHP_DR_AP_STATE_CHANGE,
922 				    SE_NO_HINT, pcihp_p->dip,
923 				    KM_SLEEP);
924 			}
925 			break;
926 		case DEVCTL_AP_DISCONNECT:
927 			rv = hpc_nexus_disconnect(slotinfop->slot_hdl, NULL, 0);
928 			if (rv == HPC_SUCCESS) {
929 				slotinfop->rstate = AP_RSTATE_DISCONNECTED;
930 
931 				if (drv_getparm(TIME, (void *)&time) !=
932 				    DDI_SUCCESS)
933 					slotinfop->last_change = (time_t)-1;
934 				else
935 					slotinfop->last_change = (time32_t)time;
936 
937 				slotinfop = &pcihp_p->slotinfo[pci_dev];
938 				pcihp_gen_sysevent(slotinfop->name,
939 				    PCIHP_DR_AP_STATE_CHANGE,
940 				    SE_NO_HINT, pcihp_p->dip,
941 				    KM_SLEEP);
942 			}
943 			break;
944 		}
945 		mutex_exit(&slotinfop->slot_mutex);
946 
947 		switch (rv) {
948 		case HPC_ERR_INVALID:
949 			rv = ENXIO;
950 			break;
951 		case HPC_ERR_NOTSUPPORTED:
952 			rv = ENOTSUP;
953 			break;
954 		case HPC_ERR_FAILED:
955 			rv = EIO;
956 			break;
957 		}
958 
959 		break;
960 
961 	case DEVCTL_AP_CONFIGURE:
962 		/*
963 		 * **************************************
964 		 * CONFIGURE the occupant in the slot.
965 		 * **************************************
966 		 */
967 		slotinfop = &pcihp_p->slotinfo[pci_dev];
968 
969 		mutex_enter(&slotinfop->slot_mutex);
970 
971 		rv = pcihp_configure_ap(pcihp_p, pci_dev);
972 		if (rv == HPC_SUCCESS) {
973 			pcihp_gen_sysevent(slotinfop->name,
974 			    PCIHP_DR_AP_STATE_CHANGE,
975 			    SE_NO_HINT, pcihp_p->dip, KM_SLEEP);
976 			pcihp_create_occupant_props(self, dev, pci_dev);
977 		}
978 		mutex_exit(&slotinfop->slot_mutex);
979 
980 		break;
981 
982 	case DEVCTL_AP_UNCONFIGURE:
983 		/*
984 		 * **************************************
985 		 * UNCONFIGURE the occupant in the slot.
986 		 * **************************************
987 		 */
988 		slotinfop = &pcihp_p->slotinfo[pci_dev];
989 
990 		mutex_enter(&slotinfop->slot_mutex);
991 
992 		rv = pcihp_unconfigure_ap(pcihp_p, pci_dev);
993 
994 		if (rv == HPC_SUCCESS) {
995 			pcihp_gen_sysevent(slotinfop->name,
996 			    PCIHP_DR_AP_STATE_CHANGE,
997 			    SE_NO_HINT, pcihp_p->dip, KM_SLEEP);
998 			pcihp_delete_occupant_props(pcihp_p->dip, dev);
999 		}
1000 		mutex_exit(&slotinfop->slot_mutex);
1001 
1002 		break;
1003 
1004 	case DEVCTL_AP_GETSTATE:
1005 	{
1006 		int mutex_held;
1007 
1008 		/*
1009 		 * return the state of Attachment Point.
1010 		 *
1011 		 * If the occupant is in UNCONFIGURED state then
1012 		 * we should get the receptacle state from the
1013 		 * HPC driver because the receptacle state
1014 		 * maintained in the nexus may not be accurate.
1015 		 */
1016 
1017 		/*
1018 		 * check for valid request:
1019 		 *	1. It is a hotplug slot.
1020 		 */
1021 		slotinfop = &pcihp_p->slotinfo[pci_dev];
1022 
1023 		/* try to acquire the slot mutex */
1024 		mutex_held = mutex_tryenter(&slotinfop->slot_mutex);
1025 
1026 		if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) {
1027 			rv = ENXIO;
1028 			if (mutex_held) {
1029 				mutex_exit(&slotinfop->slot_mutex);
1030 			}
1031 			break;
1032 		}
1033 
1034 		if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) {
1035 			if (hpc_nexus_control(slotinfop->slot_hdl,
1036 			    HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) {
1037 				rv = EIO;
1038 				if (mutex_held)
1039 					mutex_exit(&slotinfop->slot_mutex);
1040 				break;
1041 			}
1042 			slotinfop->rstate = (ap_rstate_t)rstate;
1043 		}
1044 
1045 		ap_state.ap_rstate = slotinfop->rstate;
1046 		ap_state.ap_ostate = slotinfop->ostate;
1047 		ap_state.ap_condition = slotinfop->condition;
1048 		ap_state.ap_last_change = slotinfop->last_change;
1049 		ap_state.ap_error_code = 0; /* XXX */
1050 		if (mutex_held)
1051 			ap_state.ap_in_transition = 0; /* AP is not busy */
1052 		else
1053 			ap_state.ap_in_transition = 1; /* AP is busy */
1054 
1055 		if (mutex_held)
1056 			mutex_exit(&slotinfop->slot_mutex);
1057 
1058 		/* copy the return-AP-state information to the user space */
1059 		if (ndi_dc_return_ap_state(&ap_state, dcp) != NDI_SUCCESS)
1060 			rv = EFAULT;
1061 
1062 		break;
1063 
1064 	}
1065 	case DEVCTL_AP_CONTROL:
1066 		/*
1067 		 * HPC control functions:
1068 		 *	HPC_CTRL_ENABLE_SLOT/HPC_CTRL_DISABLE_SLOT
1069 		 *		Changes the state of the slot and preserves
1070 		 *		the state across the reboot.
1071 		 *	HPC_CTRL_ENABLE_AUTOCFG/HPC_CTRL_DISABLE_AUTOCFG
1072 		 *		Enables or disables the auto configuration
1073 		 *		of hot plugged occupant if the hardware
1074 		 *		supports notification of the hot plug
1075 		 *		events.
1076 		 *	HPC_CTRL_GET_LED_STATE/HPC_CTRL_SET_LED_STATE
1077 		 *		Controls the state of an LED.
1078 		 *	HPC_CTRL_GET_SLOT_INFO
1079 		 *		Get slot information data structure
1080 		 *		(hpc_slot_info_t).
1081 		 *	HPC_CTRL_GET_BOARD_TYPE
1082 		 *		Get board type information (hpc_board_type_t).
1083 		 *	HPC_CTRL_GET_CARD_INFO
1084 		 *		Get card information (hpc_card_info_t).
1085 		 *
1086 		 * These control functions are used by the cfgadm plug-in
1087 		 * to implement "-x" and "-v" options.
1088 		 */
1089 
1090 		/* copy user ioctl data first */
1091 		switch (ddi_model_convert_from(mode & FMODELS)) {
1092 		case DDI_MODEL_ILP32: {
1093 			struct hpc_control32_data hpc_ctrldata32;
1094 
1095 			if (copyin((void *)arg, (void *)&hpc_ctrldata32,
1096 				sizeof (struct hpc_control32_data)) != 0) {
1097 				rv = EFAULT;
1098 				break;
1099 			}
1100 			hpc_ctrldata.cmd = hpc_ctrldata32.cmd;
1101 			hpc_ctrldata.data =
1102 			    (void *)(intptr_t)hpc_ctrldata32.data;
1103 			break;
1104 		}
1105 		case DDI_MODEL_NONE:
1106 			if (copyin((void *)arg, (void *)&hpc_ctrldata,
1107 			    sizeof (struct hpc_control_data)) != 0) {
1108 				rv = EFAULT;
1109 			}
1110 			break;
1111 		default:
1112 			rv = EFAULT;
1113 			break;
1114 		}
1115 		if (rv == EFAULT)
1116 			break;
1117 		/*
1118 		 * check for valid request:
1119 		 *	1. It is a hotplug slot.
1120 		 */
1121 		slotinfop = &pcihp_p->slotinfo[pci_dev];
1122 
1123 		mutex_enter(&slotinfop->slot_mutex);
1124 
1125 		if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) {
1126 			rv = ENXIO;
1127 			mutex_exit(&slotinfop->slot_mutex);
1128 			break;
1129 		}
1130 
1131 		switch (hpc_ctrldata.cmd) {
1132 
1133 		case HPC_CTRL_GET_LED_STATE:
1134 			/* copy the led info from the user space */
1135 			if (copyin(hpc_ctrldata.data, (void *)&led_info,
1136 			    sizeof (hpc_led_info_t)) != 0) {
1137 				rv = EFAULT;
1138 				break;
1139 			}
1140 
1141 			/* get the state of LED information */
1142 			if (hpc_nexus_control(slotinfop->slot_hdl,
1143 			    HPC_CTRL_GET_LED_STATE, (caddr_t)&led_info) != 0) {
1144 
1145 				if (rv != ENOTSUP)
1146 					rv = EIO;
1147 
1148 				break;
1149 			}
1150 
1151 			/* copy the led info to the user space */
1152 			if (copyout((void *)&led_info, hpc_ctrldata.data,
1153 			    sizeof (hpc_led_info_t)) != 0) {
1154 				rv = EFAULT;
1155 				break;
1156 			}
1157 
1158 			break;
1159 
1160 		case HPC_CTRL_SET_LED_STATE:
1161 			/* copy the led info from the user space */
1162 			if (copyin(hpc_ctrldata.data, (void *)&led_info,
1163 			    sizeof (hpc_led_info_t)) != 0) {
1164 				rv = EFAULT;
1165 				break;
1166 			}
1167 
1168 			/* set the state of an LED */
1169 			rv = hpc_nexus_control(slotinfop->slot_hdl,
1170 			    HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info);
1171 
1172 			/*
1173 			 * If the Hotswap Controller does not support
1174 			 * LED management (as you would find typically
1175 			 * in the cPCI industry), then we handle the
1176 			 * blue LED on/off/blink operations, just in
1177 			 * case it helps slot identification.
1178 			 */
1179 			if ((rv == HPC_ERR_NOTSUPPORTED) &&
1180 			    (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) {
1181 				if (led_info.led != HPC_ATTN_LED)
1182 					break;
1183 
1184 				switch (led_info.state) {
1185 				case HPC_LED_OFF:
1186 					pcihp_hs_csr_op(pcihp_p,
1187 					    pci_dev,
1188 					    HPC_EVENT_SLOT_BLUE_LED_OFF);
1189 					rv = 0;
1190 					break;
1191 				case HPC_LED_ON:
1192 					/*
1193 					 * Please note that leaving
1194 					 * LED ON could be dangerous
1195 					 * as it means it is Ok to
1196 					 * remove the board, which
1197 					 * is not what we want to
1198 					 * convey. So it is upto the
1199 					 * user to take care of this
1200 					 * situation and usage.
1201 					 *
1202 					 * Normally, a Blink command
1203 					 * is more appropriate for
1204 					 * identifying a board.
1205 					 */
1206 					pcihp_hs_csr_op(pcihp_p,
1207 					    pci_dev,
1208 					    HPC_EVENT_SLOT_BLUE_LED_ON);
1209 					rv = 0;
1210 					break;
1211 				case HPC_LED_BLINK:
1212 				{
1213 					int bl;
1214 
1215 					for (bl = 0; bl < 2; bl++) {
1216 						pcihp_hs_csr_op(pcihp_p,
1217 						    pci_dev,
1218 						    HPC_EVENT_SLOT_BLUE_LED_ON);
1219 						delay(pcihp_cpci_led_blink);
1220 					pcihp_hs_csr_op(pcihp_p,
1221 					    pci_dev,
1222 					    HPC_EVENT_SLOT_BLUE_LED_OFF);
1223 						delay(pcihp_cpci_led_blink);
1224 					}
1225 					rv = 0;
1226 					break;
1227 				}
1228 				default:
1229 					break;
1230 				}
1231 			}
1232 
1233 			if (rv == HPC_ERR_FAILED)
1234 				rv = EIO;
1235 			break;
1236 
1237 		case HPC_CTRL_ENABLE_SLOT:
1238 
1239 			/*
1240 			 * If slot already enabled, do not send a duplicate
1241 			 * control message to the HPC driver.
1242 			 */
1243 			if ((slotinfop->slot_flags & PCIHP_SLOT_DISABLED) == 0)
1244 				break;
1245 
1246 			/* tell the HPC driver also */
1247 			if (hpc_nexus_control(slotinfop->slot_hdl,
1248 			    HPC_CTRL_ENABLE_SLOT, NULL) != HPC_SUCCESS) {
1249 				rv = EIO;
1250 				break;
1251 			}
1252 
1253 			/*
1254 			 * Enable the slot for hotplug operations.
1255 			 */
1256 			slotinfop->slot_flags &= ~PCIHP_SLOT_DISABLED;
1257 
1258 			slotinfop->condition = AP_COND_UNKNOWN;
1259 
1260 			/* XXX need to preserve this state across reboot? */
1261 
1262 			break;
1263 
1264 		case HPC_CTRL_DISABLE_SLOT:
1265 
1266 			/* Do not disable if occupant configured */
1267 			if (slotinfop->ostate == AP_OSTATE_CONFIGURED) {
1268 				rv = EAGAIN;
1269 				break;
1270 			}
1271 
1272 			/* tell the HPC driver also */
1273 			if (hpc_nexus_control(slotinfop->slot_hdl,
1274 			    HPC_CTRL_DISABLE_SLOT, NULL) != HPC_SUCCESS) {
1275 				rv = EIO;
1276 				break;
1277 			}
1278 
1279 			/*
1280 			 * Disable the slot for hotplug operations.
1281 			 */
1282 			slotinfop->slot_flags |= PCIHP_SLOT_DISABLED;
1283 
1284 			slotinfop->condition = AP_COND_UNUSABLE;
1285 
1286 			/* XXX need to preserve this state across reboot? */
1287 
1288 			break;
1289 
1290 		case HPC_CTRL_ENABLE_AUTOCFG:
1291 			/*
1292 			 * Enable auto configuration on this slot.
1293 			 */
1294 			slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN;
1295 
1296 			/* tell the HPC driver also */
1297 			(void) hpc_nexus_control(slotinfop->slot_hdl,
1298 			    HPC_CTRL_ENABLE_AUTOCFG, NULL);
1299 
1300 			if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)
1301 				pcihp_hs_csr_op(pcihp_p, pci_dev,
1302 				    HPC_EVENT_ENABLE_ENUM);
1303 			break;
1304 
1305 		case HPC_CTRL_DISABLE_AUTOCFG:
1306 			/*
1307 			 * Disable auto configuration on this slot.
1308 			 */
1309 			slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN;
1310 
1311 			/* tell the HPC driver also */
1312 			(void) hpc_nexus_control(slotinfop->slot_hdl,
1313 			    HPC_CTRL_DISABLE_AUTOCFG, NULL);
1314 
1315 			if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)
1316 				pcihp_hs_csr_op(pcihp_p, pci_dev,
1317 				    HPC_EVENT_DISABLE_ENUM);
1318 			break;
1319 
1320 		case HPC_CTRL_GET_BOARD_TYPE:
1321 		{
1322 			hpc_board_type_t board_type;
1323 
1324 			/*
1325 			 * Get board type data structure, hpc_board_type_t.
1326 			 */
1327 			board_type = pcihp_get_board_type(slotinfop);
1328 			if (board_type == -1) {
1329 				rv = ENXIO;
1330 				break;
1331 			}
1332 
1333 			/* copy the board type info to the user space */
1334 			if (copyout((void *)&board_type, hpc_ctrldata.data,
1335 			    sizeof (hpc_board_type_t)) != 0) {
1336 				rv = ENXIO;
1337 				break;
1338 			}
1339 
1340 			break;
1341 		}
1342 
1343 		case HPC_CTRL_GET_SLOT_INFO:
1344 		{
1345 			hpc_slot_info_t slot_info;
1346 
1347 			/*
1348 			 * Get slot information structure, hpc_slot_info_t.
1349 			 */
1350 			slot_info.version = HPC_SLOT_INFO_VERSION;
1351 			slot_info.slot_type = slotinfop->slot_type;
1352 			slot_info.pci_slot_capabilities =
1353 			    slotinfop->slot_capabilities;
1354 			slot_info.pci_dev_num = (uint16_t)pci_dev;
1355 			(void) strcpy(slot_info.pci_slot_name, slotinfop->name);
1356 
1357 			/* copy the slot info structure to the user space */
1358 			if (copyout((void *)&slot_info, hpc_ctrldata.data,
1359 			    sizeof (hpc_slot_info_t)) != 0) {
1360 				rv = EFAULT;
1361 				break;
1362 			}
1363 
1364 			break;
1365 		}
1366 
1367 		case HPC_CTRL_GET_CARD_INFO:
1368 		{
1369 			hpc_card_info_t card_info;
1370 			ddi_acc_handle_t handle;
1371 			dev_info_t *cdip;
1372 
1373 			/*
1374 			 * Get card information structure, hpc_card_info_t.
1375 			 */
1376 
1377 			/* verify that the card is configured */
1378 			if ((slotinfop->ostate != AP_OSTATE_CONFIGURED) ||
1379 			    ((cdip = pcihp_devi_find(self,
1380 			    pci_dev, 0)) == NULL)) {
1381 				/*
1382 				 * either the card is not present or
1383 				 * it is not configured.
1384 				 */
1385 				rv = ENXIO;
1386 				break;
1387 			}
1388 
1389 			/*
1390 			 * If declared failed, don't allow Config operations.
1391 			 * Otherwise, if good or failing, it is assumed Ok
1392 			 * to get config data.
1393 			 */
1394 			if (slotinfop->condition == AP_COND_FAILED) {
1395 				rv = EIO;
1396 				break;
1397 			}
1398 
1399 			/* get the information from the PCI config header */
1400 			/* for the function 0.				  */
1401 			if (pci_config_setup(cdip, &handle) != DDI_SUCCESS) {
1402 				rv = EIO;
1403 				break;
1404 			}
1405 			card_info.prog_class = pci_config_get8(handle,
1406 			    PCI_CONF_PROGCLASS);
1407 			card_info.base_class = pci_config_get8(handle,
1408 			    PCI_CONF_BASCLASS);
1409 			card_info.sub_class = pci_config_get8(handle,
1410 			    PCI_CONF_SUBCLASS);
1411 			card_info.header_type = pci_config_get8(handle,
1412 			    PCI_CONF_HEADER);
1413 			pci_config_teardown(&handle);
1414 
1415 			/* copy the card info structure to the user space */
1416 			if (copyout((void *)&card_info, hpc_ctrldata.data,
1417 			    sizeof (hpc_card_info_t)) != 0) {
1418 				rv = EFAULT;
1419 				break;
1420 			}
1421 
1422 			break;
1423 		}
1424 
1425 		default:
1426 			rv = EINVAL;
1427 			break;
1428 		}
1429 
1430 		mutex_exit(&slotinfop->slot_mutex);
1431 
1432 		break;
1433 
1434 	default:
1435 		rv = ENOTTY;
1436 	}
1437 
1438 	if (cmd != DEVCTL_AP_CONTROL)
1439 		ndi_dc_freehdl(dcp);
1440 
1441 	(void) pcihp_get_soft_state(self, state_unlocking, &rval);
1442 
1443 	return (rv);
1444 }
1445 
1446 /*
1447  * **************************************
1448  * CONFIGURE the occupant in the slot.
1449  * **************************************
1450  */
1451 static int
pcihp_configure_ap(pcihp_t * pcihp_p,int pci_dev)1452 pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev)
1453 {
1454 	dev_info_t *self = pcihp_p->dip;
1455 	int rv = HPC_SUCCESS;
1456 	struct pcihp_slotinfo *slotinfop;
1457 	hpc_slot_state_t rstate;
1458 	struct pcihp_config_ctrl ctrl;
1459 	time_t time;
1460 
1461 	/*
1462 	 * check for valid request:
1463 	 *	1. It is a hotplug slot.
1464 	 *	2. The receptacle is in the CONNECTED state.
1465 	 */
1466 	slotinfop = &pcihp_p->slotinfo[pci_dev];
1467 
1468 
1469 
1470 	if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) ||
1471 	    (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) {
1472 
1473 		return (ENXIO);
1474 	}
1475 
1476 	/*
1477 	 * If the occupant is already in (partially?) configured
1478 	 * state then call the ndi_devi_online() on the device
1479 	 * subtree(s) for this attachment point.
1480 	 */
1481 
1482 	if (slotinfop->ostate == AP_OSTATE_CONFIGURED) {
1483 		ctrl.flags = PCIHP_CFG_CONTINUE;
1484 		ctrl.rv = NDI_SUCCESS;
1485 		ctrl.dip = NULL;
1486 		ctrl.pci_dev = pci_dev;
1487 		ctrl.op = PCIHP_ONLINE;
1488 
1489 		ndi_devi_enter(self);
1490 		ddi_walk_devs(ddi_get_child(self), pcihp_configure,
1491 		    (void *)&ctrl);
1492 		ndi_devi_exit(self);
1493 
1494 		if (ctrl.rv != NDI_SUCCESS) {
1495 			/*
1496 			 * one or more of the devices are not
1497 			 * onlined. How is this to be reported?
1498 			 */
1499 			cmn_err(CE_WARN,
1500 			    "pcihp (%s%d): failed to attach one or"
1501 			    " more drivers for the card in the slot %s",
1502 			    ddi_driver_name(self), ddi_get_instance(self),
1503 			    slotinfop->name);
1504 			/* rv = EFAULT; */
1505 		}
1506 		/* tell HPC driver that the occupant is configured */
1507 		(void) hpc_nexus_control(slotinfop->slot_hdl,
1508 		    HPC_CTRL_DEV_CONFIGURED, NULL);
1509 
1510 		if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS)
1511 			slotinfop->last_change = (time_t)-1;
1512 		else
1513 			slotinfop->last_change = (time32_t)time;
1514 
1515 
1516 		return (rv);
1517 	}
1518 
1519 	/*
1520 	 * Occupant is in the UNCONFIGURED state.
1521 	 */
1522 
1523 	/* Check if the receptacle is in the CONNECTED state. */
1524 	if (hpc_nexus_control(slotinfop->slot_hdl,
1525 	    HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) {
1526 
1527 		return (ENXIO);
1528 	}
1529 
1530 	if (rstate == HPC_SLOT_EMPTY) {
1531 		/* error. slot is empty */
1532 
1533 		return (ENXIO);
1534 	}
1535 
1536 	if (rstate != HPC_SLOT_CONNECTED) {
1537 		/* error. either the slot is empty or connect failed */
1538 
1539 		return (ENXIO);
1540 	}
1541 
1542 	slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */
1543 
1544 	/* Turn INS and LED off, and start configuration. */
1545 	if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
1546 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE);
1547 		if (pcihp_cpci_blue_led)
1548 			pcihp_hs_csr_op(pcihp_p, pci_dev,
1549 			    HPC_EVENT_SLOT_BLUE_LED_OFF);
1550 		slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING;
1551 	}
1552 
1553 	(void) hpc_nexus_control(slotinfop->slot_hdl,
1554 	    HPC_CTRL_DEV_CONFIG_START, NULL);
1555 
1556 	/*
1557 	 * Call the configurator to configure the card.
1558 	 */
1559 	if (pcicfg_configure(self, pci_dev, PCICFG_ALL_FUNC, 0)
1560 	    != PCICFG_SUCCESS) {
1561 		if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
1562 			if (pcihp_cpci_blue_led)
1563 				pcihp_hs_csr_op(pcihp_p, pci_dev,
1564 				    HPC_EVENT_SLOT_BLUE_LED_ON);
1565 			pcihp_hs_csr_op(pcihp_p, pci_dev,
1566 			    HPC_EVENT_SLOT_UNCONFIGURE);
1567 		}
1568 		/* tell HPC driver occupant configure Error */
1569 		(void) hpc_nexus_control(slotinfop->slot_hdl,
1570 		    HPC_CTRL_DEV_CONFIG_FAILURE, NULL);
1571 
1572 		return (EIO);
1573 	}
1574 
1575 	/* record the occupant state as CONFIGURED */
1576 	slotinfop->ostate = AP_OSTATE_CONFIGURED;
1577 	slotinfop->condition = AP_COND_OK;
1578 
1579 	/* now, online all the devices in the AP */
1580 	ctrl.flags = PCIHP_CFG_CONTINUE;
1581 	ctrl.rv = NDI_SUCCESS;
1582 	ctrl.dip = NULL;
1583 	ctrl.pci_dev = pci_dev;
1584 	ctrl.op = PCIHP_ONLINE;
1585 
1586 	ndi_devi_enter(self);
1587 	ddi_walk_devs(ddi_get_child(self), pcihp_configure, (void *)&ctrl);
1588 	ndi_devi_exit(self);
1589 
1590 	if (ctrl.rv != NDI_SUCCESS) {
1591 		/*
1592 		 * one or more of the devices are not
1593 		 * ONLINE'd. How is this to be
1594 		 * reported?
1595 		 */
1596 		cmn_err(CE_WARN,
1597 		    "pcihp (%s%d): failed to attach one or"
1598 		    " more drivers for the card in the slot %s",
1599 		    ddi_driver_name(pcihp_p->dip),
1600 		    ddi_get_instance(pcihp_p->dip),
1601 		    slotinfop->name);
1602 		/* rv = EFAULT; */
1603 	}
1604 	/* store HS_CSR location.  No events, jut a read operation. */
1605 	if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)
1606 		pcihp_hs_csr_op(pcihp_p, pci_dev, -1);
1607 
1608 	/* tell HPC driver that the occupant is configured */
1609 	(void) hpc_nexus_control(slotinfop->slot_hdl,
1610 	    HPC_CTRL_DEV_CONFIGURED, NULL);
1611 
1612 
1613 	return (rv);
1614 }
1615 
1616 /*
1617  * **************************************
1618  * UNCONFIGURE the occupant in the slot.
1619  * **************************************
1620  */
1621 static int
pcihp_unconfigure_ap(pcihp_t * pcihp_p,int pci_dev)1622 pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev)
1623 {
1624 	dev_info_t *self = pcihp_p->dip;
1625 	int rv = HPC_SUCCESS;
1626 	struct pcihp_slotinfo *slotinfop;
1627 	struct pcihp_config_ctrl ctrl;
1628 	time_t time;
1629 
1630 	/*
1631 	 * check for valid request:
1632 	 *	1. It is a hotplug slot.
1633 	 *	2. The occupant is in the CONFIGURED state.
1634 	 */
1635 	slotinfop = &pcihp_p->slotinfo[pci_dev];
1636 
1637 
1638 
1639 	if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) ||
1640 	    (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) {
1641 
1642 		return (ENXIO);
1643 	}
1644 	/*
1645 	 * The following may not need to be there, as we should
1646 	 * support unconfiguring of boards and free resources
1647 	 * even when the board is not hotswappable. But this is
1648 	 * the only way, we may be able to tell the system
1649 	 * administrator that it is not a hotswap board since
1650 	 * disconnect operation is never called.
1651 	 * This way we help the system administrator from not
1652 	 * accidentally removing a non hotswap board and
1653 	 * possibly destroying it. May be this behavior can
1654 	 * be a default, and can be enabled or disabled via
1655 	 * a global flag.
1656 	 */
1657 	if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
1658 		if (slotinfop->slot_flags & PCIHP_SLOT_DEV_NON_HOTPLUG) {
1659 			/* Operation unsupported if no HS board/slot */
1660 			return (ENOTSUP);
1661 		}
1662 	}
1663 
1664 	/*
1665 	 * If the occupant is in the CONFIGURED state then
1666 	 * call the configurator to unconfigure the slot.
1667 	 */
1668 	if (slotinfop->ostate == AP_OSTATE_CONFIGURED) {
1669 
1670 		/*
1671 		 * since potential state change is imminent mask
1672 		 * enum events to prevent the slot from being re-configured
1673 		 */
1674 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM);
1675 
1676 		/*
1677 		 * Detach all the drivers for the devices in the
1678 		 * slot. Call pcihp_configure() to do this.
1679 		 */
1680 		ctrl.flags = 0;
1681 		ctrl.rv = NDI_SUCCESS;
1682 		ctrl.dip = NULL;
1683 		ctrl.pci_dev = pci_dev;
1684 		ctrl.op = PCIHP_OFFLINE;
1685 
1686 		(void) devfs_clean(self, NULL, DV_CLEAN_FORCE);
1687 		ndi_devi_enter(self);
1688 		ddi_walk_devs(ddi_get_child(self), pcihp_configure,
1689 		    (void *)&ctrl);
1690 		ndi_devi_exit(self);
1691 
1692 		if (ctrl.rv != NDI_SUCCESS) {
1693 			/*
1694 			 * Failed to detach one or more drivers
1695 			 * Restore the state of drivers which
1696 			 * are offlined during this operation.
1697 			 */
1698 			ctrl.flags = 0;
1699 			ctrl.rv = NDI_SUCCESS;
1700 			ctrl.dip = NULL;
1701 			ctrl.pci_dev = pci_dev;
1702 			ctrl.op = PCIHP_ONLINE;
1703 
1704 			ndi_devi_enter(self);
1705 			ddi_walk_devs(ddi_get_child(self),
1706 			    pcihp_configure, (void *)&ctrl);
1707 			ndi_devi_exit(self);
1708 
1709 			/* tell HPC driver that the occupant is Busy */
1710 			(void) hpc_nexus_control(slotinfop->slot_hdl,
1711 			    HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL);
1712 
1713 			rv = EBUSY;
1714 		} else {
1715 			(void) hpc_nexus_control(slotinfop->slot_hdl,
1716 			    HPC_CTRL_DEV_UNCONFIG_START, NULL);
1717 
1718 			if (pcicfg_unconfigure(self, pci_dev,
1719 			    PCICFG_ALL_FUNC, 0) == PCICFG_SUCCESS) {
1720 				/*
1721 				 * Now that resources are freed,
1722 				 * clear EXT and Turn LED ON.
1723 				 */
1724 				if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
1725 					pcihp_hs_csr_op(pcihp_p, pci_dev,
1726 					    HPC_EVENT_SLOT_UNCONFIGURE);
1727 					if (pcihp_cpci_blue_led)
1728 						pcihp_hs_csr_op(pcihp_p,
1729 						    pci_dev,
1730 						    HPC_EVENT_SLOT_BLUE_LED_ON);
1731 					slotinfop->hs_csr_location = 0;
1732 					slotinfop->slot_flags &=
1733 					    ~(PCIHP_SLOT_DEV_NON_HOTPLUG|
1734 					    PCIHP_SLOT_ENUM_EXT_PENDING);
1735 				}
1736 				slotinfop->ostate = AP_OSTATE_UNCONFIGURED;
1737 				slotinfop->condition = AP_COND_UNKNOWN;
1738 				/*
1739 				 * send the notification of state change
1740 				 * to the HPC driver.
1741 				 */
1742 				(void) hpc_nexus_control(slotinfop->slot_hdl,
1743 				    HPC_CTRL_DEV_UNCONFIGURED,
1744 				    NULL);
1745 			} else {
1746 				/* tell HPC driver occupant unconfigure Error */
1747 				(void) hpc_nexus_control(slotinfop->slot_hdl,
1748 				    HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL);
1749 
1750 				rv = EIO;
1751 			}
1752 		}
1753 	}
1754 
1755 	if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS)
1756 		slotinfop->last_change = (time_t)-1;
1757 	else
1758 		slotinfop->last_change = (time32_t)time;
1759 
1760 
1761 
1762 	/* unmask enum events again */
1763 	if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) {
1764 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM);
1765 	}
1766 
1767 	return (rv);
1768 }
1769 
1770 /*
1771  * Accessor function to return pointer to the pci hotplug
1772  * cb_ops structure.
1773  */
1774 struct cb_ops *
pcihp_get_cb_ops()1775 pcihp_get_cb_ops()
1776 {
1777 	return (&pcihp_cb_ops);
1778 }
1779 
1780 /*
1781  * Setup function to initialize hot plug feature. Returns DDI_SUCCESS
1782  * for successful initialization, otherwise it returns DDI_FAILURE.
1783  *
1784  * It is assumed that this this function is called from the attach()
1785  * entry point of the PCI nexus driver.
1786  */
1787 
1788 int
pcihp_init(dev_info_t * dip)1789 pcihp_init(dev_info_t *dip)
1790 {
1791 	pcihp_t *pcihp_p;
1792 	int i;
1793 	caddr_t enum_data;
1794 	int enum_size;
1795 	int rv;
1796 
1797 	mutex_enter(&pcihp_open_mutex);
1798 
1799 	/*
1800 	 * Make sure that it is not already initialized.
1801 	 */
1802 	if (pcihp_get_soft_state(dip, PCIHP_DR_NOOP, &rv) != NULL) {
1803 		cmn_err(CE_WARN, "%s%d: pcihp instance already initialized!",
1804 		    ddi_driver_name(dip), ddi_get_instance(dip));
1805 		goto cleanup;
1806 	}
1807 
1808 	/*
1809 	 * Initialize soft state structure for the bus instance.
1810 	 */
1811 	if ((pcihp_p = pcihp_create_soft_state(dip)) == NULL) {
1812 		cmn_err(CE_WARN, "%s%d: can't allocate pcihp structure",
1813 		    ddi_driver_name(dip), ddi_get_instance(dip));
1814 		goto cleanup;
1815 	}
1816 
1817 	pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED;
1818 	/* XXX if bus is running at 66Mhz then set PCI_BUS_66MHZ bit */
1819 	pcihp_p->bus_flags = 0;	/* XXX FIX IT */
1820 
1821 	/*
1822 	 * If a platform wishes to implement Radial ENUM# routing
1823 	 * a property "enum-impl" must be presented to us with a
1824 	 * string value "radial".
1825 	 * This helps us not go for polling operation (default)
1826 	 * during a ENUM# event.
1827 	 */
1828 	if (ddi_getlongprop(DDI_DEV_T_ANY, dip, 0, "enum-impl",
1829 	    (caddr_t)&enum_data, &enum_size) == DDI_PROP_SUCCESS) {
1830 		if (strcmp(enum_data, "radial") == 0) {
1831 			pcihp_p->bus_flags |= PCIHP_BUS_ENUM_RADIAL;
1832 		}
1833 		kmem_free(enum_data, enum_size);
1834 	}
1835 
1836 	for (i = 0; i < PCI_MAX_DEVS; i++) {
1837 		/* initialize slot mutex */
1838 		mutex_init(&pcihp_p->slotinfo[i].slot_mutex, NULL,
1839 		    MUTEX_DRIVER, NULL);
1840 	}
1841 
1842 	/*
1843 	 *  register the bus instance with the HPS framework.
1844 	 */
1845 	if (hpc_nexus_register_bus(dip, pcihp_new_slot_state, 0) != 0) {
1846 		cmn_err(CE_WARN, "%s%d: failed to register the bus with HPS",
1847 		    ddi_driver_name(dip), ddi_get_instance(dip));
1848 		goto cleanup1;
1849 	}
1850 
1851 	/*
1852 	 * Create the "devctl" minor for hot plug support. The minor
1853 	 * number for "devctl" node is in the same format as the AP
1854 	 * minor nodes.
1855 	 */
1856 	if (ddi_create_minor_node(dip, "devctl", S_IFCHR,
1857 	    PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), PCIHP_DEVCTL_MINOR),
1858 	    DDI_NT_NEXUS, 0) != DDI_SUCCESS)
1859 		goto cleanup2;
1860 
1861 	/*
1862 	 * Setup resource maps for this bus node. (Note: This can
1863 	 * be done from the attach(9E) of the nexus itself.)
1864 	 */
1865 	(void) pci_resource_setup(dip);
1866 
1867 	pcihp_p->bus_state = PCIHP_BUS_CONFIGURED;
1868 
1869 	mutex_exit(&pcihp_open_mutex);
1870 
1871 	return (DDI_SUCCESS);
1872 
1873 cleanup2:
1874 	(void) hpc_nexus_unregister_bus(dip);
1875 cleanup1:
1876 	for (i = 0; i < PCI_MAX_DEVS; i++)
1877 		mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex);
1878 	pcihp_destroy_soft_state(dip);
1879 cleanup:
1880 	mutex_exit(&pcihp_open_mutex);
1881 	return (DDI_FAILURE);
1882 }
1883 
1884 /*
1885  * pcihp_uninit()
1886  *
1887  * The bus instance is going away, cleanup any data associated with
1888  * the management of hot plug slots. It is assumed that this function
1889  * is called from detach() routine of the PCI nexus driver. Also,
1890  * it is assumed that no devices on the bus are in the configured state.
1891  */
1892 int
pcihp_uninit(dev_info_t * dip)1893 pcihp_uninit(dev_info_t *dip)
1894 {
1895 	pcihp_t *pcihp_p;
1896 	int i, j;
1897 	int rv;
1898 
1899 	mutex_enter(&pcihp_open_mutex);
1900 	/* get a pointer to the soft state structure */
1901 	pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_BUS_UNCONFIGURE, &rv);
1902 	ASSERT(pcihp_p != NULL);
1903 
1904 	/* slot mutexes should prevent any configure/unconfigure access */
1905 	for (i = 0; i < PCI_MAX_DEVS; i++) {
1906 		if (!mutex_tryenter(&pcihp_p->slotinfo[i].slot_mutex)) {
1907 			for (j = 0; j < i; j++) {
1908 				mutex_exit(&pcihp_p->slotinfo[j].slot_mutex);
1909 			}
1910 			mutex_exit(&pcihp_open_mutex);
1911 			return (DDI_FAILURE);
1912 		}
1913 	}
1914 
1915 	if ((pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) ||
1916 	    (rv == PCIHP_FAILURE)) {
1917 		cmn_err(CE_WARN, "%s%d: pcihp instance is busy",
1918 		    ddi_driver_name(dip), ddi_get_instance(dip));
1919 		for (i = 0; i < PCI_MAX_DEVS; i++) {
1920 			mutex_exit(&pcihp_p->slotinfo[i].slot_mutex);
1921 		}
1922 		mutex_exit(&pcihp_open_mutex);
1923 		return (DDI_FAILURE);
1924 	}
1925 
1926 	/*
1927 	 * Unregister the bus with the HPS.
1928 	 *
1929 	 * (Note: It is assumed that the HPS framework uninstalls
1930 	 *  event handlers for all the hot plug slots on this bus.)
1931 	 */
1932 	(void) hpc_nexus_unregister_bus(dip);
1933 
1934 	/* Free up any kmem_alloc'd memory for slot info table. */
1935 	for (i = 0; i < PCI_MAX_DEVS; i++) {
1936 		/* free up slot name strings */
1937 		if (pcihp_p->slotinfo[i].name != NULL)
1938 			kmem_free(pcihp_p->slotinfo[i].name,
1939 			    strlen(pcihp_p->slotinfo[i].name) + 1);
1940 	}
1941 
1942 	/* destroy slot mutexes */
1943 	for (i = 0; i < PCI_MAX_DEVS; i++)
1944 		mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex);
1945 
1946 	ddi_remove_minor_node(dip, NULL);
1947 
1948 	/* free up the soft state structure */
1949 	pcihp_destroy_soft_state(dip);
1950 
1951 	/*
1952 	 * Destroy resource maps for this bus node. (Note: This can
1953 	 * be done from the detach(9E) of the nexus itself.)
1954 	 */
1955 	(void) pci_resource_destroy(dip);
1956 
1957 	mutex_exit(&pcihp_open_mutex);
1958 
1959 	return (DDI_SUCCESS);
1960 }
1961 
1962 /*
1963  * pcihp_new_slot_state()
1964  *
1965  * This function is called by the HPS when it finds a hot plug
1966  * slot is added or being removed from the hot plug framework.
1967  * It returns 0 for success and HPC_ERR_FAILED for errors.
1968  */
1969 static int
pcihp_new_slot_state(dev_info_t * dip,hpc_slot_t hdl,hpc_slot_info_t * slot_info,int slot_state)1970 pcihp_new_slot_state(dev_info_t *dip, hpc_slot_t hdl,
1971     hpc_slot_info_t *slot_info, int slot_state)
1972 {
1973 	pcihp_t *pcihp_p;
1974 	struct pcihp_slotinfo *slotinfop;
1975 	int pci_dev;
1976 	minor_t ap_minor;
1977 	major_t ap_major;
1978 	int rv = 0;
1979 	time_t time;
1980 	int auto_enable = 1;
1981 	int rval;
1982 
1983 	/* get a pointer to the soft state structure */
1984 	pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_SLOT_ENTER, &rval);
1985 	ASSERT(pcihp_p != NULL);
1986 
1987 	if (rval == PCIHP_FAILURE) {
1988 		PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured"
1989 		    " while slot activity is requested\n"));
1990 		return (HPC_ERR_FAILED);
1991 	}
1992 
1993 	pci_dev = slot_info->pci_dev_num;
1994 	slotinfop = &pcihp_p->slotinfo[pci_dev];
1995 
1996 	mutex_enter(&slotinfop->slot_mutex);
1997 
1998 	switch (slot_state) {
1999 
2000 	case HPC_SLOT_ONLINE:
2001 
2002 		/*
2003 		 * Make sure the slot is not already ONLINE (paranoia?).
2004 		 * (Note: Should this be simply an ASSERTION?)
2005 		 */
2006 		if (slotinfop->slot_hdl != NULL) {
2007 			PCIHP_DEBUG((CE_WARN,
2008 			    "pcihp (%s%d): pci slot (dev %x) already ONLINE!!",
2009 			    ddi_driver_name(dip), ddi_get_instance(dip),
2010 			    pci_dev));
2011 			rv = HPC_ERR_FAILED;
2012 			break;
2013 		}
2014 
2015 		/*
2016 		 * Add the hot plug slot to the bus.
2017 		 */
2018 
2019 		/* create the AP minor node */
2020 		ap_minor = PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), pci_dev);
2021 		if (ddi_create_minor_node(dip, slot_info->pci_slot_name,
2022 		    S_IFCHR, ap_minor,
2023 		    DDI_NT_PCI_ATTACHMENT_POINT, 0) == DDI_FAILURE) {
2024 			cmn_err(CE_WARN,
2025 			    "pcihp (%s%d): ddi_create_minor_node failed"
2026 			    " for pci dev %x", ddi_driver_name(dip),
2027 			    ddi_get_instance(dip), pci_dev);
2028 			rv = HPC_ERR_FAILED;
2029 			break;
2030 		}
2031 
2032 		/* save the slot handle */
2033 		slotinfop->slot_hdl = hdl;
2034 
2035 		/* setup event handler for all hardware events on the slot */
2036 		ap_major = ddi_driver_major(dip);
2037 		if (hpc_install_event_handler(hdl, -1, pcihp_event_handler,
2038 		    (caddr_t)makedevice(ap_major, ap_minor)) != 0) {
2039 			cmn_err(CE_WARN,
2040 			    "pcihp (%s%d): install event handler failed"
2041 			    " for pci dev %x", ddi_driver_name(dip),
2042 			    ddi_get_instance(dip), pci_dev);
2043 			rv = HPC_ERR_FAILED;
2044 			break;
2045 		}
2046 		slotinfop->event_mask = (uint32_t)0xFFFFFFFF;
2047 
2048 		pcihp_create_occupant_props(dip, makedevice(ap_major,
2049 		    ap_minor), pci_dev);
2050 
2051 		/* set default auto configuration enabled flag for this slot */
2052 		slotinfop->slot_flags = pcihp_autocfg_enabled;
2053 
2054 		/* copy the slot information */
2055 		slotinfop->name =
2056 		    kmem_alloc(strlen(slot_info->pci_slot_name) + 1, KM_SLEEP);
2057 		(void) strcpy(slotinfop->name, slot_info->pci_slot_name);
2058 		slotinfop->slot_type = slot_info->slot_type;
2059 		slotinfop->hs_csr_location = 0;
2060 		slotinfop->slot_capabilities = slot_info->pci_slot_capabilities;
2061 		if (slot_info->slot_flags & HPC_SLOT_NO_AUTO_ENABLE)
2062 			auto_enable = 0;
2063 
2064 		if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) {
2065 			pci_devlink_flags |= (1 << pci_dev);
2066 			(void) ddi_prop_update_int(DDI_DEV_T_NONE,
2067 			    dip, "ap-names", pci_devlink_flags);
2068 		}
2069 
2070 		PCIHP_DEBUG((CE_NOTE,
2071 		    "pcihp (%s%d): pci slot (dev %x) ONLINE\n",
2072 		    ddi_driver_name(dip), ddi_get_instance(dip), pci_dev));
2073 
2074 		/*
2075 		 * The slot may have an occupant that was configured
2076 		 * at boot time. If we find a devinfo node in the tree
2077 		 * for this slot (i.e pci device number) then we
2078 		 * record the occupant state as CONFIGURED.
2079 		 */
2080 		if (pcihp_devi_find(dip, pci_dev, 0) != NULL) {
2081 			/* we have a configured occupant */
2082 			slotinfop->ostate = AP_OSTATE_CONFIGURED;
2083 			slotinfop->rstate = AP_RSTATE_CONNECTED;
2084 			slotinfop->condition = AP_COND_OK;
2085 
2086 			if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2087 				/* this will set slot flags too. */
2088 				(void) pcihp_get_board_type(slotinfop);
2089 				pcihp_hs_csr_op(pcihp_p, pci_dev,
2090 				    HPC_EVENT_SLOT_CONFIGURE);
2091 				if (pcihp_cpci_blue_led)
2092 					pcihp_hs_csr_op(pcihp_p, pci_dev,
2093 					    HPC_EVENT_SLOT_BLUE_LED_OFF);
2094 				/* ENUM# enabled by default for cPCI devices */
2095 				slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN;
2096 				slotinfop->slot_flags &=
2097 				    ~PCIHP_SLOT_ENUM_INS_PENDING;
2098 			}
2099 
2100 			/* tell HPC driver that the occupant is configured */
2101 			(void) hpc_nexus_control(slotinfop->slot_hdl,
2102 			    HPC_CTRL_DEV_CONFIGURED, NULL);
2103 
2104 			/*
2105 			 * Tell sysevent listeners that slot has
2106 			 * changed state.  At minimum, this is useful
2107 			 * when a PCI-E Chassis (containing Occupants) is
2108 			 * hotplugged.  In this case, the following will
2109 			 * announce that the Occupant in the Receptacle
2110 			 * in the Chassis had a state-change.
2111 			 */
2112 			pcihp_gen_sysevent(slotinfop->name,
2113 			    PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT,
2114 			    pcihp_p->dip, KM_SLEEP);
2115 		} else {
2116 			struct pcihp_config_ctrl ctrl;
2117 
2118 			slotinfop->ostate = AP_OSTATE_UNCONFIGURED;
2119 			slotinfop->rstate = AP_RSTATE_EMPTY;
2120 			slotinfop->condition = AP_COND_UNKNOWN;
2121 
2122 			if (!auto_enable) {	/* no further action */
2123 				break;
2124 			}
2125 
2126 			/*
2127 			 * We enable power to the slot and try to
2128 			 * configure if there is any card present.
2129 			 *
2130 			 * Note: This case is possible if the BIOS or
2131 			 * firmware doesn't enable the slots during
2132 			 * soft reboot.
2133 			 */
2134 			if (hpc_nexus_connect(slotinfop->slot_hdl,
2135 			    NULL, 0) != HPC_SUCCESS)
2136 				break;
2137 
2138 			if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2139 				pcihp_hs_csr_op(pcihp_p, pci_dev,
2140 				    HPC_EVENT_SLOT_CONFIGURE);
2141 				if (pcihp_cpci_blue_led)
2142 					pcihp_hs_csr_op(pcihp_p, pci_dev,
2143 					    HPC_EVENT_SLOT_BLUE_LED_OFF);
2144 				slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN;
2145 				slotinfop->slot_flags &=
2146 				    ~PCIHP_SLOT_ENUM_INS_PENDING;
2147 			}
2148 
2149 			(void) hpc_nexus_control(slotinfop->slot_hdl,
2150 			    HPC_CTRL_DEV_CONFIG_START, NULL);
2151 
2152 			/*
2153 			 * Call the configurator to configure the card.
2154 			 */
2155 			if (pcicfg_configure(dip, pci_dev, PCICFG_ALL_FUNC, 0)
2156 			    != PCICFG_SUCCESS) {
2157 				if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2158 					if (pcihp_cpci_blue_led)
2159 						pcihp_hs_csr_op(pcihp_p,
2160 						    pci_dev,
2161 						    HPC_EVENT_SLOT_BLUE_LED_ON);
2162 					pcihp_hs_csr_op(pcihp_p, pci_dev,
2163 					    HPC_EVENT_SLOT_UNCONFIGURE);
2164 				}
2165 
2166 				/* tell HPC driver occupant configure Error */
2167 				(void) hpc_nexus_control(slotinfop->slot_hdl,
2168 				    HPC_CTRL_DEV_CONFIG_FAILURE, NULL);
2169 
2170 				/*
2171 				 * call HPC driver to turn off the power for
2172 				 * the slot.
2173 				 */
2174 				(void) hpc_nexus_disconnect(slotinfop->slot_hdl,
2175 				    NULL, 0);
2176 			} else {
2177 				/* record the occupant state as CONFIGURED */
2178 				slotinfop->ostate = AP_OSTATE_CONFIGURED;
2179 				slotinfop->rstate = AP_RSTATE_CONNECTED;
2180 				slotinfop->condition = AP_COND_OK;
2181 
2182 				/* now, online all the devices in the AP */
2183 				ctrl.flags = PCIHP_CFG_CONTINUE;
2184 				ctrl.rv = NDI_SUCCESS;
2185 				ctrl.dip = NULL;
2186 				ctrl.pci_dev = pci_dev;
2187 				ctrl.op = PCIHP_ONLINE;
2188 				/*
2189 				 * the following sets slot_flags and
2190 				 * hs_csr_location too.
2191 				 */
2192 				(void) pcihp_get_board_type(slotinfop);
2193 
2194 				ndi_devi_enter(dip);
2195 				ddi_walk_devs(ddi_get_child(dip),
2196 				    pcihp_configure, (void *)&ctrl);
2197 				ndi_devi_exit(dip);
2198 
2199 				if (ctrl.rv != NDI_SUCCESS) {
2200 					/*
2201 					 * one or more of the devices are not
2202 					 * ONLINE'd. How is this to be
2203 					 * reported?
2204 					 */
2205 					cmn_err(CE_WARN,
2206 					    "pcihp (%s%d): failed to attach"
2207 					    " one or more drivers for the"
2208 					    " card in the slot %s",
2209 					    ddi_driver_name(dip),
2210 					    ddi_get_instance(dip),
2211 					    slotinfop->name);
2212 				}
2213 
2214 				/* tell HPC driver the Occupant is Configured */
2215 				(void) hpc_nexus_control(slotinfop->slot_hdl,
2216 				    HPC_CTRL_DEV_CONFIGURED, NULL);
2217 
2218 				/*
2219 				 * Tell sysevent listeners that slot has
2220 				 * changed state.  At minimum, this is useful
2221 				 * when a PCI-E Chassis (containing Occupants)
2222 				 * is hotplugged.  In this case, the following
2223 				 * will announce that the Occupant in the
2224 				 * Receptacle in the Chassis had a state-change.
2225 				 */
2226 				pcihp_gen_sysevent(slotinfop->name,
2227 				    PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT,
2228 				    pcihp_p->dip, KM_SLEEP);
2229 			}
2230 		}
2231 
2232 		break;
2233 
2234 	case HPC_SLOT_OFFLINE:
2235 		/*
2236 		 * A hot plug slot is being removed from the bus.
2237 		 * Make sure there is no occupant configured on the
2238 		 * slot before removing the AP minor node.
2239 		 */
2240 		if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) {
2241 			cmn_err(CE_WARN, "pcihp (%s%d): Card is still in "
2242 			    "configured state for pci dev %x",
2243 			    ddi_driver_name(dip), ddi_get_instance(dip),
2244 			    pci_dev);
2245 			rv = HPC_ERR_FAILED;
2246 			break;
2247 		}
2248 
2249 		/*
2250 		 * If the AP device is in open state then return
2251 		 * error.
2252 		 */
2253 		if (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) {
2254 			rv = HPC_ERR_FAILED;
2255 			break;
2256 		}
2257 		if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) {
2258 			pci_devlink_flags &= ~(1 << pci_dev);
2259 			(void) ddi_prop_update_int(DDI_DEV_T_NONE, dip,
2260 			    "ap-names", pci_devlink_flags);
2261 		}
2262 
2263 		/* remove the minor node */
2264 		ddi_remove_minor_node(dip, slotinfop->name);
2265 
2266 		/* free up the memory for the name string */
2267 		kmem_free(slotinfop->name, strlen(slotinfop->name) + 1);
2268 
2269 		/* update the slot info data */
2270 		slotinfop->name = NULL;
2271 		slotinfop->slot_hdl = NULL;
2272 
2273 		PCIHP_DEBUG((CE_NOTE,
2274 		    "pcihp (%s%d): pci slot (dev %x) OFFLINE\n",
2275 		    ddi_driver_name(dip), ddi_get_instance(dip),
2276 		    slot_info->pci_dev_num));
2277 
2278 		break;
2279 	default:
2280 		cmn_err(CE_WARN,
2281 		    "pcihp_new_slot_state: unknown slot_state %d", slot_state);
2282 		rv = HPC_ERR_FAILED;
2283 	}
2284 
2285 	if (rv == 0) {
2286 		if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS)
2287 			slotinfop->last_change = (time_t)-1;
2288 		else
2289 			slotinfop->last_change = (time32_t)time;
2290 	}
2291 
2292 	mutex_exit(&slotinfop->slot_mutex);
2293 
2294 	(void) pcihp_get_soft_state(dip, PCIHP_DR_SLOT_EXIT, &rval);
2295 
2296 	return (rv);
2297 }
2298 
2299 /*
2300  * Event handler. It is assumed that this function is called from
2301  * a kernel context only.
2302  *
2303  * Parameters:
2304  *	slot_arg	AP minor number.
2305  *	event_mask	Event that occurred.
2306  */
2307 
2308 static int
pcihp_event_handler(caddr_t slot_arg,uint_t event_mask)2309 pcihp_event_handler(caddr_t slot_arg, uint_t event_mask)
2310 {
2311 	dev_t ap_dev = (dev_t)slot_arg;
2312 	dev_info_t *self;
2313 	pcihp_t *pcihp_p;
2314 	int pci_dev;
2315 	int rv = HPC_EVENT_CLAIMED;
2316 	struct pcihp_slotinfo *slotinfop;
2317 	struct pcihp_config_ctrl ctrl;
2318 	int rval;
2319 	int hint;
2320 	hpc_slot_state_t rstate;
2321 	struct hpc_led_info led_info;
2322 
2323 	/*
2324 	 * Get the soft state structure.
2325 	 */
2326 	if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)ap_dev,
2327 	    (void **)&self) != DDI_SUCCESS)
2328 		return (ENXIO);
2329 
2330 	pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_SLOT_ENTER, &rval);
2331 	ASSERT(pcihp_p != NULL);
2332 
2333 	if (rval == PCIHP_FAILURE) {
2334 		PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured"
2335 		    " while slot activity is requested\n"));
2336 		return (-1);
2337 	}
2338 
2339 	/* get the PCI device number for the slot */
2340 	pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(ap_dev));
2341 
2342 	slotinfop = &pcihp_p->slotinfo[pci_dev];
2343 
2344 	/*
2345 	 * All the events that may be handled in interrupt context should be
2346 	 * free of any mutex usage.
2347 	 */
2348 	switch (event_mask) {
2349 
2350 	case HPC_EVENT_CLEAR_ENUM:
2351 		/*
2352 		 * Check and clear ENUM# interrupt status. This may be
2353 		 * called by the Hotswap controller driver when it is
2354 		 * operating in a full hotswap system where the
2355 		 * platform may not have control on globally disabling ENUM#.
2356 		 * In such cases, the intent is to clear interrupt and
2357 		 * process the interrupt in non-interrupt context.
2358 		 * This is the first part of the ENUM# event processing.
2359 		 */
2360 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated"
2361 		    " on the bus (for slot %s ?)",
2362 		    ddi_driver_name(pcihp_p->dip),
2363 		    ddi_get_instance(pcihp_p->dip), slotinfop->name));
2364 
2365 		/* this is the only event coming through in interrupt context */
2366 		rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_CLEAR_ENUM,
2367 		    KM_NOSLEEP);
2368 
2369 		(void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval);
2370 
2371 		return (rv);
2372 	default:
2373 		break;
2374 	}
2375 
2376 	mutex_enter(&slotinfop->slot_mutex);
2377 
2378 	if (hpc_nexus_control(slotinfop->slot_hdl,
2379 	    HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0)
2380 		rv = HPC_ERR_FAILED;
2381 
2382 	slotinfop->rstate = (ap_rstate_t)rstate;
2383 
2384 	switch (event_mask) {
2385 
2386 	case HPC_EVENT_SLOT_INSERTION:
2387 		/*
2388 		 * A card is inserted in the slot. Just report this
2389 		 * event and return.
2390 		 */
2391 		cmn_err(CE_NOTE, "pcihp (%s%d): card is inserted"
2392 		    " in the slot %s (pci dev %x)",
2393 		    ddi_driver_name(pcihp_p->dip),
2394 		    ddi_get_instance(pcihp_p->dip),
2395 		    slotinfop->name, pci_dev);
2396 
2397 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2398 
2399 		break;
2400 
2401 	case HPC_EVENT_SLOT_CONFIGURE:
2402 		/*
2403 		 * Configure the occupant that is just inserted in the slot.
2404 		 * The receptacle may or may not be in the connected state. If
2405 		 * the receptacle is not connected and the auto configuration
2406 		 * is enabled on this slot then connect the slot. If auto
2407 		 * configuration is enabled then configure the card.
2408 		 */
2409 		if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) {
2410 			/*
2411 			 * auto configuration is disabled. Tell someone
2412 			 * like RCM about this hotplug event?
2413 			 */
2414 			cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_CONFIGURE event"
2415 			    " occurred for pci dev %x (slot %s),"
2416 			    " Slot disabled for auto-configuration.",
2417 			    ddi_driver_name(pcihp_p->dip),
2418 			    ddi_get_instance(pcihp_p->dip), pci_dev,
2419 			    slotinfop->name);
2420 
2421 			/* +++ HOOK for RCM to report this hotplug event? +++ */
2422 
2423 			break;
2424 		}
2425 
2426 		if (slotinfop->ostate == AP_OSTATE_CONFIGURED) {
2427 			cmn_err(CE_WARN, "pcihp (%s%d): SLOT_CONFIGURE event"
2428 			    " re-occurred for pci dev %x (slot %s),",
2429 			    ddi_driver_name(pcihp_p->dip),
2430 			    ddi_get_instance(pcihp_p->dip), pci_dev,
2431 			    slotinfop->name);
2432 			mutex_exit(&slotinfop->slot_mutex);
2433 
2434 			(void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT,
2435 			    &rval);
2436 
2437 			return (EAGAIN);
2438 		}
2439 
2440 		/*
2441 		 * Auto configuration is enabled. First, make sure the
2442 		 * receptacle is in the CONNECTED state.
2443 		 */
2444 		if ((rv = hpc_nexus_connect(slotinfop->slot_hdl,
2445 		    NULL, 0)) == HPC_SUCCESS) {
2446 			/* record rstate */
2447 			slotinfop->rstate = AP_RSTATE_CONNECTED;
2448 		}
2449 
2450 		/* Clear INS and Turn LED Off and start configuring. */
2451 		if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2452 			pcihp_hs_csr_op(pcihp_p, pci_dev,
2453 			    HPC_EVENT_SLOT_CONFIGURE);
2454 			if (pcihp_cpci_blue_led)
2455 				pcihp_hs_csr_op(pcihp_p, pci_dev,
2456 				    HPC_EVENT_SLOT_BLUE_LED_OFF);
2457 		}
2458 
2459 		(void) hpc_nexus_control(slotinfop->slot_hdl,
2460 		    HPC_CTRL_DEV_CONFIG_START, NULL);
2461 
2462 		/*
2463 		 * Call the configurator to configure the card.
2464 		 */
2465 		if (pcicfg_configure(pcihp_p->dip, pci_dev, PCICFG_ALL_FUNC, 0)
2466 		    != PCICFG_SUCCESS) {
2467 			if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2468 				if (pcihp_cpci_blue_led)
2469 					pcihp_hs_csr_op(pcihp_p, pci_dev,
2470 					    HPC_EVENT_SLOT_BLUE_LED_ON);
2471 				pcihp_hs_csr_op(pcihp_p, pci_dev,
2472 				    HPC_EVENT_SLOT_UNCONFIGURE);
2473 			}
2474 			/* failed to configure the card */
2475 			cmn_err(CE_WARN, "pcihp (%s%d): failed to configure"
2476 			    " the card in the slot %s",
2477 			    ddi_driver_name(pcihp_p->dip),
2478 			    ddi_get_instance(pcihp_p->dip),
2479 			    slotinfop->name);
2480 			/* failed to configure; disconnect the slot */
2481 			if (hpc_nexus_disconnect(slotinfop->slot_hdl,
2482 			    NULL, 0) == HPC_SUCCESS) {
2483 				slotinfop->rstate = AP_RSTATE_DISCONNECTED;
2484 			}
2485 
2486 			/* tell HPC driver occupant configure Error */
2487 			(void) hpc_nexus_control(slotinfop->slot_hdl,
2488 			    HPC_CTRL_DEV_CONFIG_FAILURE, NULL);
2489 		} else {
2490 			/* record the occupant state as CONFIGURED */
2491 			slotinfop->ostate = AP_OSTATE_CONFIGURED;
2492 			slotinfop->condition = AP_COND_OK;
2493 
2494 			/* now, online all the devices in the AP */
2495 			ctrl.flags = PCIHP_CFG_CONTINUE;
2496 			ctrl.rv = NDI_SUCCESS;
2497 			ctrl.dip = NULL;
2498 			ctrl.pci_dev = pci_dev;
2499 			ctrl.op = PCIHP_ONLINE;
2500 			(void) pcihp_get_board_type(slotinfop);
2501 
2502 			ndi_devi_enter(pcihp_p->dip);
2503 			ddi_walk_devs(ddi_get_child(pcihp_p->dip),
2504 			    pcihp_configure, (void *)&ctrl);
2505 			ndi_devi_exit(pcihp_p->dip);
2506 
2507 			if (ctrl.rv != NDI_SUCCESS) {
2508 				/*
2509 				 * one or more of the devices are not
2510 				 * ONLINE'd. How is this to be
2511 				 * reported?
2512 				 */
2513 				cmn_err(CE_WARN,
2514 				    "pcihp (%s%d): failed to attach one or"
2515 				    " more drivers for the card in"
2516 				    " the slot %s",
2517 				    ddi_driver_name(pcihp_p->dip),
2518 				    ddi_get_instance(pcihp_p->dip),
2519 				    slotinfop->name);
2520 			}
2521 
2522 			/* tell HPC driver that the occupant is configured */
2523 			(void) hpc_nexus_control(slotinfop->slot_hdl,
2524 			    HPC_CTRL_DEV_CONFIGURED, NULL);
2525 
2526 			cmn_err(CE_NOTE, "pcihp (%s%d): card is CONFIGURED"
2527 			    " in the slot %s (pci dev %x)",
2528 			    ddi_driver_name(pcihp_p->dip),
2529 			    ddi_get_instance(pcihp_p->dip),
2530 			    slotinfop->name, pci_dev);
2531 		}
2532 
2533 		break;
2534 
2535 	case HPC_EVENT_SLOT_UNCONFIGURE:
2536 		/*
2537 		 * Unconfigure the occupant in this slot.
2538 		 */
2539 		if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) {
2540 			/*
2541 			 * auto configuration is disabled. Tell someone
2542 			 * like RCM about this hotplug event?
2543 			 */
2544 			cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_UNCONFIGURE event"
2545 			    " for pci dev %x (slot %s) ignored,"
2546 			    " Slot disabled for auto-configuration.",
2547 			    ddi_driver_name(pcihp_p->dip),
2548 			    ddi_get_instance(pcihp_p->dip), pci_dev,
2549 			    slotinfop->name);
2550 
2551 			/* +++ HOOK for RCM to report this hotplug event? +++ */
2552 
2553 			break;
2554 		}
2555 
2556 		if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) {
2557 			cmn_err(CE_WARN, "pcihp (%s%d): SLOT_UNCONFIGURE "
2558 			    "event re-occurred for pci dev %x (slot %s),",
2559 			    ddi_driver_name(pcihp_p->dip),
2560 			    ddi_get_instance(pcihp_p->dip), pci_dev,
2561 			    slotinfop->name);
2562 			mutex_exit(&slotinfop->slot_mutex);
2563 
2564 			(void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT,
2565 			    &rval);
2566 
2567 			return (EAGAIN);
2568 		}
2569 		/*
2570 		 * If the occupant is in the CONFIGURED state then
2571 		 * call the configurator to unconfigure the slot.
2572 		 */
2573 		if (slotinfop->ostate == AP_OSTATE_CONFIGURED) {
2574 			/*
2575 			 * Detach all the drivers for the devices in the
2576 			 * slot. Call pcihp_configure() to offline the
2577 			 * devices.
2578 			 */
2579 			ctrl.flags = 0;
2580 			ctrl.rv = NDI_SUCCESS;
2581 			ctrl.dip = NULL;
2582 			ctrl.pci_dev = pci_dev;
2583 			ctrl.op = PCIHP_OFFLINE;
2584 
2585 			(void) devfs_clean(pcihp_p->dip, NULL, DV_CLEAN_FORCE);
2586 			ndi_devi_enter(pcihp_p->dip);
2587 			ddi_walk_devs(ddi_get_child(pcihp_p->dip),
2588 			    pcihp_configure, (void *)&ctrl);
2589 			ndi_devi_exit(pcihp_p->dip);
2590 
2591 			if (ctrl.rv != NDI_SUCCESS) {
2592 				/*
2593 				 * Failed to detach one or more drivers.
2594 				 * Restore the status for the drivers
2595 				 * which are offlined during this step.
2596 				 */
2597 				ctrl.flags = PCIHP_CFG_CONTINUE;
2598 				ctrl.rv = NDI_SUCCESS;
2599 				ctrl.dip = NULL;
2600 				ctrl.pci_dev = pci_dev;
2601 				ctrl.op = PCIHP_ONLINE;
2602 
2603 				ndi_devi_enter(pcihp_p->dip);
2604 				ddi_walk_devs(ddi_get_child(pcihp_p->dip),
2605 				    pcihp_configure, (void *)&ctrl);
2606 				ndi_devi_exit(pcihp_p->dip);
2607 				rv = HPC_ERR_FAILED;
2608 			} else {
2609 				(void) hpc_nexus_control(slotinfop->slot_hdl,
2610 				    HPC_CTRL_DEV_UNCONFIG_START, NULL);
2611 
2612 				if (pcicfg_unconfigure(pcihp_p->dip, pci_dev,
2613 				    PCICFG_ALL_FUNC, 0) == PCICFG_SUCCESS) {
2614 
2615 				/* Resources freed. Turn LED on. Clear EXT. */
2616 				if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2617 					if (pcihp_cpci_blue_led)
2618 						pcihp_hs_csr_op(pcihp_p,
2619 						    pci_dev,
2620 						    HPC_EVENT_SLOT_BLUE_LED_ON);
2621 					pcihp_hs_csr_op(pcihp_p, pci_dev,
2622 					    HPC_EVENT_SLOT_UNCONFIGURE);
2623 					slotinfop->hs_csr_location = 0;
2624 					slotinfop->slot_flags &=
2625 					    ~PCIHP_SLOT_DEV_NON_HOTPLUG;
2626 				}
2627 					slotinfop->ostate =
2628 					    AP_OSTATE_UNCONFIGURED;
2629 					slotinfop->condition = AP_COND_UNKNOWN;
2630 					/*
2631 					 * send the notification of state change
2632 					 * to the HPC driver.
2633 					 */
2634 					(void) hpc_nexus_control(
2635 					    slotinfop->slot_hdl,
2636 					    HPC_CTRL_DEV_UNCONFIGURED, NULL);
2637 					/* disconnect the slot */
2638 					if (hpc_nexus_disconnect(
2639 					    slotinfop->slot_hdl,
2640 					    NULL, 0) == HPC_SUCCESS) {
2641 						slotinfop->rstate =
2642 						    AP_RSTATE_DISCONNECTED;
2643 					}
2644 
2645 					cmn_err(CE_NOTE,
2646 					    "pcihp (%s%d): card is UNCONFIGURED"
2647 					    " in the slot %s (pci dev %x)",
2648 					    ddi_driver_name(pcihp_p->dip),
2649 					    ddi_get_instance(pcihp_p->dip),
2650 					    slotinfop->name, pci_dev);
2651 				} else {
2652 					/* tell HPC driver occupant is Busy */
2653 					(void) hpc_nexus_control(
2654 					    slotinfop->slot_hdl,
2655 					    HPC_CTRL_DEV_UNCONFIG_FAILURE,
2656 					    NULL);
2657 
2658 					rv = HPC_ERR_FAILED;
2659 				}
2660 			}
2661 		}
2662 
2663 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2664 
2665 		break;
2666 
2667 	case HPC_EVENT_SLOT_REMOVAL:
2668 		/*
2669 		 * Card is removed from the slot. The card must have been
2670 		 * unconfigured before this event.
2671 		 */
2672 		if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) {
2673 			slotinfop->condition = AP_COND_FAILED;
2674 			cmn_err(CE_WARN, "pcihp (%s%d): card is removed"
2675 			    " from the slot %s",
2676 			    ddi_driver_name(pcihp_p->dip),
2677 			    ddi_get_instance(pcihp_p->dip),
2678 			    slotinfop->name);
2679 		} else {
2680 			slotinfop->condition = AP_COND_UNKNOWN;
2681 			cmn_err(CE_NOTE, "pcihp (%s%d): card is removed"
2682 			    " from the slot %s",
2683 			    ddi_driver_name(pcihp_p->dip),
2684 			    ddi_get_instance(pcihp_p->dip),
2685 			    slotinfop->name);
2686 		}
2687 
2688 		slotinfop->rstate = AP_RSTATE_EMPTY;
2689 
2690 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2691 
2692 		break;
2693 
2694 	case HPC_EVENT_SLOT_POWER_ON:
2695 		/*
2696 		 * Slot is connected to the bus. i.e the card is powered
2697 		 * on. Are there any error conditions to be checked?
2698 		 */
2699 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered"
2700 		    " on in the slot %s",
2701 		    ddi_driver_name(pcihp_p->dip),
2702 		    ddi_get_instance(pcihp_p->dip),
2703 		    slotinfop->name));
2704 
2705 		slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */
2706 
2707 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2708 
2709 		break;
2710 
2711 	case HPC_EVENT_SLOT_POWER_OFF:
2712 		/*
2713 		 * Slot is disconnected from the bus. i.e the card is powered
2714 		 * off. Are there any error conditions to be checked?
2715 		 */
2716 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered"
2717 		    " off in the slot %s",
2718 		    ddi_driver_name(pcihp_p->dip),
2719 		    ddi_get_instance(pcihp_p->dip),
2720 		    slotinfop->name));
2721 
2722 		slotinfop->rstate = AP_RSTATE_DISCONNECTED; /* record rstate */
2723 
2724 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2725 
2726 		break;
2727 
2728 	case HPC_EVENT_SLOT_LATCH_SHUT:
2729 		/*
2730 		 * Latch on the slot is closed.
2731 		 */
2732 		cmn_err(CE_NOTE, "pcihp (%s%d): latch is shut for the slot %s",
2733 		    ddi_driver_name(pcihp_p->dip),
2734 		    ddi_get_instance(pcihp_p->dip),
2735 		    slotinfop->name);
2736 
2737 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2738 
2739 		break;
2740 
2741 	case HPC_EVENT_SLOT_LATCH_OPEN:
2742 		/*
2743 		 * Latch on the slot is open.
2744 		 */
2745 		cmn_err(CE_NOTE, "pcihp (%s%d): latch is open for the slot %s",
2746 		    ddi_driver_name(pcihp_p->dip),
2747 		    ddi_get_instance(pcihp_p->dip),
2748 		    slotinfop->name);
2749 
2750 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2751 
2752 		break;
2753 
2754 	case HPC_EVENT_PROCESS_ENUM:
2755 		/*
2756 		 * HSC knows the device number of the slot where the
2757 		 * ENUM# was triggered.
2758 		 * Now finish the necessary actions to be taken on that
2759 		 * slot. Please note that the interrupt is already cleared.
2760 		 * This is the second(last) part of the ENUM# event processing.
2761 		 */
2762 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): processing ENUM#"
2763 		    " for slot %s",
2764 		    ddi_driver_name(pcihp_p->dip),
2765 		    ddi_get_instance(pcihp_p->dip),
2766 		    slotinfop->name));
2767 
2768 		mutex_exit(&slotinfop->slot_mutex);
2769 		rv = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev,
2770 		    PCIHP_HANDLE_ENUM, KM_SLEEP);
2771 		mutex_enter(&slotinfop->slot_mutex);
2772 
2773 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2774 
2775 		break;
2776 
2777 	case HPC_EVENT_BUS_ENUM:
2778 		/*
2779 		 * Same as HPC_EVENT_SLOT_ENUM as defined the PSARC doc.
2780 		 * This term is used for better clarity of its usage.
2781 		 *
2782 		 * ENUM signal occurred on the bus. It may be from this
2783 		 * slot or any other hotplug slot on the bus.
2784 		 *
2785 		 * It is NOT recommended that the hotswap controller uses
2786 		 * event without queuing as NDI and other DDI calls may not
2787 		 * necessarily be invokable in interrupt context.
2788 		 * Hence the hotswap controller driver should use the
2789 		 * CLEAR_ENUM event which returns the slot device number
2790 		 * and then call HPC_EVENT_PROCESS_ENUM event with queuing.
2791 		 *
2792 		 * This can be used when the hotswap controller is
2793 		 * implementing a polled event mechanism to do the
2794 		 * necessary actions in a single call.
2795 		 */
2796 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated"
2797 		    " on the bus (for slot %s ?)",
2798 		    ddi_driver_name(pcihp_p->dip),
2799 		    ddi_get_instance(pcihp_p->dip),
2800 		    slotinfop->name));
2801 
2802 		mutex_exit(&slotinfop->slot_mutex);
2803 		rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_HANDLE_ENUM,
2804 		    KM_SLEEP);
2805 		mutex_enter(&slotinfop->slot_mutex);
2806 
2807 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2808 
2809 		break;
2810 
2811 	case HPC_EVENT_SLOT_BLUE_LED_ON:
2812 
2813 		/*
2814 		 * Request to turn Hot Swap Blue LED on.
2815 		 */
2816 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn On Blue "
2817 		    "LED on the bus (for slot %s ?)",
2818 		    ddi_driver_name(pcihp_p->dip),
2819 		    ddi_get_instance(pcihp_p->dip),
2820 		    slotinfop->name));
2821 
2822 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_ON);
2823 		break;
2824 
2825 	case HPC_EVENT_DISABLE_ENUM:
2826 		/*
2827 		 * Disable ENUM# which disables auto configuration on this slot
2828 		 */
2829 		if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2830 			pcihp_hs_csr_op(pcihp_p, pci_dev,
2831 			    HPC_EVENT_DISABLE_ENUM);
2832 			slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN;
2833 		}
2834 		break;
2835 
2836 	case HPC_EVENT_ENABLE_ENUM:
2837 		/*
2838 		 * Enable ENUM# which enables auto configuration on this slot.
2839 		 */
2840 		if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
2841 			pcihp_hs_csr_op(pcihp_p, pci_dev,
2842 			    HPC_EVENT_ENABLE_ENUM);
2843 			slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN;
2844 		}
2845 		break;
2846 
2847 	case HPC_EVENT_SLOT_BLUE_LED_OFF:
2848 
2849 		/*
2850 		 * Request to turn Hot Swap Blue LED off.
2851 		 */
2852 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn Off Blue "
2853 		    "LED on the bus (for slot %s ?)",
2854 		    ddi_driver_name(pcihp_p->dip),
2855 		    ddi_get_instance(pcihp_p->dip),
2856 		    slotinfop->name));
2857 
2858 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_OFF);
2859 
2860 		break;
2861 
2862 	case HPC_EVENT_SLOT_NOT_HEALTHY:
2863 		/*
2864 		 * HEALTHY# signal on this slot is not OK.
2865 		 */
2866 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is not OK"
2867 		    " for this slot %s",
2868 		    ddi_driver_name(pcihp_p->dip),
2869 		    ddi_get_instance(pcihp_p->dip),
2870 		    slotinfop->name));
2871 
2872 		/* record the state in slot_flags field */
2873 		slotinfop->slot_flags |= PCIHP_SLOT_NOT_HEALTHY;
2874 		slotinfop->condition = AP_COND_FAILED;
2875 
2876 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2877 
2878 		break;
2879 
2880 	case HPC_EVENT_SLOT_HEALTHY_OK:
2881 		/*
2882 		 * HEALTHY# signal on this slot is OK now.
2883 		 */
2884 		PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is OK now"
2885 		    " for this slot %s",
2886 		    ddi_driver_name(pcihp_p->dip),
2887 		    ddi_get_instance(pcihp_p->dip),
2888 		    slotinfop->name));
2889 
2890 		/* update the state in slot_flags field */
2891 		slotinfop->slot_flags &= ~PCIHP_SLOT_NOT_HEALTHY;
2892 		slotinfop->condition = AP_COND_OK;
2893 
2894 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2895 
2896 		break;
2897 
2898 	case HPC_EVENT_SLOT_ATTN:
2899 		/*
2900 		 * Attention button is pressed.
2901 		 */
2902 		if (((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) ||
2903 		    (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) {
2904 			/*
2905 			 * either auto-conifiguration or the slot is disabled,
2906 			 * ignore this event.
2907 			 */
2908 			break;
2909 		}
2910 
2911 		if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED)
2912 			hint = SE_INCOMING_RES;
2913 		else
2914 			hint = SE_OUTGOING_RES;
2915 
2916 		if (ddi_getprop(DDI_DEV_T_ANY, pcihp_p->dip, DDI_PROP_DONTPASS,
2917 		    "inkernel-autoconfig", 0) == 0) {
2918 			pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_REQ, hint,
2919 			    pcihp_p->dip, KM_SLEEP);
2920 			break;
2921 		}
2922 
2923 		if ((slotinfop->ostate == AP_OSTATE_UNCONFIGURED) &&
2924 		    (slotinfop->rstate != AP_RSTATE_EMPTY) &&
2925 		    (slotinfop->condition != AP_COND_FAILED)) {
2926 			if (slotinfop->rstate == AP_RSTATE_DISCONNECTED) {
2927 				rv = hpc_nexus_connect(slotinfop->slot_hdl,
2928 				    NULL, 0);
2929 				if (rv == HPC_SUCCESS)
2930 					slotinfop->rstate = AP_RSTATE_CONNECTED;
2931 				else
2932 					break;
2933 			}
2934 
2935 			rv = pcihp_configure_ap(pcihp_p, pci_dev);
2936 
2937 		} else if ((slotinfop->ostate == AP_OSTATE_CONFIGURED) &&
2938 		    (slotinfop->rstate == AP_RSTATE_CONNECTED) &&
2939 		    (slotinfop->condition != AP_COND_FAILED)) {
2940 			rv = pcihp_unconfigure_ap(pcihp_p, pci_dev);
2941 
2942 			if (rv != HPC_SUCCESS)
2943 				break;
2944 
2945 			rv = hpc_nexus_disconnect(slotinfop->slot_hdl,
2946 			    NULL, 0);
2947 			if (rv == HPC_SUCCESS)
2948 				slotinfop->rstate = AP_RSTATE_DISCONNECTED;
2949 		}
2950 
2951 		break;
2952 
2953 	case HPC_EVENT_SLOT_POWER_FAULT:
2954 		/*
2955 		 * Power fault is detected.
2956 		 */
2957 		cmn_err(CE_NOTE, "pcihp (%s%d): power-fault"
2958 		    " for this slot %s",
2959 		    ddi_driver_name(pcihp_p->dip),
2960 		    ddi_get_instance(pcihp_p->dip),
2961 		    slotinfop->name);
2962 
2963 		/* turn on ATTN led */
2964 		led_info.led = HPC_ATTN_LED;
2965 		led_info.state = HPC_LED_ON;
2966 		rv = hpc_nexus_control(slotinfop->slot_hdl,
2967 		    HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info);
2968 
2969 		if (slotinfop->rstate == AP_RSTATE_CONNECTED)
2970 			(void) hpc_nexus_disconnect(slotinfop->slot_hdl,
2971 			    NULL, 0);
2972 
2973 		slotinfop->condition = AP_COND_FAILED;
2974 
2975 		pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE,
2976 		    SE_NO_HINT, pcihp_p->dip, KM_SLEEP);
2977 
2978 		break;
2979 
2980 	default:
2981 		cmn_err(CE_NOTE, "pcihp (%s%d): unknown event %x"
2982 		    " for this slot %s",
2983 		    ddi_driver_name(pcihp_p->dip),
2984 		    ddi_get_instance(pcihp_p->dip), event_mask,
2985 		    slotinfop->name);
2986 
2987 		/* +++ HOOK for RCM to report this hotplug event? +++ */
2988 
2989 		break;
2990 	}
2991 
2992 	mutex_exit(&slotinfop->slot_mutex);
2993 
2994 	(void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval);
2995 
2996 	return (rv);
2997 }
2998 
2999 /*
3000  * This function is called to online or offline the devices for an
3001  * attachment point. If the PCI device number of the node matches
3002  * with the device number of the specified hot plug slot then
3003  * the operation is performed.
3004  */
3005 static int
pcihp_configure(dev_info_t * dip,void * hdl)3006 pcihp_configure(dev_info_t *dip, void *hdl)
3007 {
3008 	int pci_dev;
3009 	struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl;
3010 	int rv;
3011 	pci_regspec_t *pci_rp;
3012 	int length;
3013 
3014 	/*
3015 	 * Get the PCI device number information from the devinfo
3016 	 * node. Since the node may not have the address field
3017 	 * setup (this is done in the DDI_INITCHILD of the parent)
3018 	 * we look up the 'reg' property to decode that information.
3019 	 */
3020 	if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
3021 	    "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) {
3022 		ctrl->rv = DDI_FAILURE;
3023 		ctrl->dip = dip;
3024 		return (DDI_WALK_TERMINATE);
3025 	}
3026 
3027 	/* get the pci device id information */
3028 	pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi);
3029 
3030 	/*
3031 	 * free the memory allocated by ddi_prop_lookup_int_array
3032 	 */
3033 	ddi_prop_free(pci_rp);
3034 
3035 	/*
3036 	 * Match the node for the device number of the slot.
3037 	 */
3038 	if (pci_dev == ctrl->pci_dev) {	/* node is a match */
3039 		if (ctrl->op == PCIHP_ONLINE) {
3040 			/* it is CONFIGURE operation */
3041 
3042 			/* skip this device if it is disabled or faulty */
3043 			if (pcihp_check_status(dip) == B_FALSE) {
3044 				return (DDI_WALK_PRUNECHILD);
3045 			}
3046 
3047 			rv = ndi_devi_online(dip, NDI_ONLINE_ATTACH|NDI_CONFIG);
3048 		} else {
3049 			/*
3050 			 * it is UNCONFIGURE operation.
3051 			 */
3052 			rv = ndi_devi_offline(dip, NDI_UNCONFIG);
3053 		}
3054 		if (rv != NDI_SUCCESS) {
3055 			/* failed to attach/detach the driver(s) */
3056 			ctrl->rv = rv;
3057 			ctrl->dip = dip;
3058 			/* terminate the search if specified */
3059 			if (!(ctrl->flags & PCIHP_CFG_CONTINUE))
3060 				return (DDI_WALK_TERMINATE);
3061 		}
3062 	}
3063 
3064 	/*
3065 	 * continue the walk to the next sibling to look for a match
3066 	 * or to find other nodes if this card is a multi-function card.
3067 	 */
3068 	return (DDI_WALK_PRUNECHILD);
3069 }
3070 
3071 /*
3072  * Check the device for a 'status' property.  A conforming device
3073  * should have a status of "okay", "disabled", "fail", or "fail-xxx".
3074  *
3075  * Return FALSE for a conforming device that is disabled or faulted.
3076  * Return TRUE in every other case.
3077  */
3078 static bool_t
pcihp_check_status(dev_info_t * dip)3079 pcihp_check_status(dev_info_t *dip)
3080 {
3081 	char *status_prop;
3082 	bool_t rv = B_TRUE;
3083 
3084 	/* try to get the 'status' property */
3085 	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
3086 	    "status", &status_prop) == DDI_PROP_SUCCESS) {
3087 
3088 		/*
3089 		 * test if the status is "disabled", "fail", or
3090 		 * "fail-xxx".
3091 		 */
3092 		if (strcmp(status_prop, "disabled") == 0) {
3093 			rv = B_FALSE;
3094 			PCIHP_DEBUG((CE_NOTE,
3095 			    "pcihp (%s%d): device is in disabled state",
3096 			    ddi_driver_name(dip), ddi_get_instance(dip)));
3097 		} else if (strncmp(status_prop, "fail", 4) == 0) {
3098 			rv = B_FALSE;
3099 			cmn_err(CE_WARN,
3100 			    "pcihp (%s%d): device is in fault state (%s)",
3101 			    ddi_driver_name(dip), ddi_get_instance(dip),
3102 			    status_prop);
3103 		}
3104 
3105 		ddi_prop_free(status_prop);
3106 	}
3107 
3108 	return (rv);
3109 }
3110 
3111 /* control structure used to find a device in the devinfo tree */
3112 struct pcihp_find_ctrl {
3113 	uint_t		device;
3114 	uint_t		function;
3115 	dev_info_t	*dip;
3116 };
3117 
3118 static dev_info_t *
pcihp_devi_find(dev_info_t * dip,uint_t device,uint_t function)3119 pcihp_devi_find(dev_info_t *dip, uint_t device, uint_t function)
3120 {
3121 	struct pcihp_find_ctrl ctrl;
3122 
3123 	ctrl.device = device;
3124 	ctrl.function = function;
3125 	ctrl.dip = NULL;
3126 
3127 	ndi_devi_enter(dip);
3128 	ddi_walk_devs(ddi_get_child(dip), pcihp_match_dev, (void *)&ctrl);
3129 	ndi_devi_exit(dip);
3130 
3131 	return (ctrl.dip);
3132 }
3133 
3134 static int
pcihp_match_dev(dev_info_t * dip,void * hdl)3135 pcihp_match_dev(dev_info_t *dip, void *hdl)
3136 {
3137 	struct pcihp_find_ctrl *ctrl = (struct pcihp_find_ctrl *)hdl;
3138 	pci_regspec_t *pci_rp;
3139 	int length;
3140 	int pci_dev;
3141 	int pci_func;
3142 
3143 	if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
3144 	    "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) {
3145 		ctrl->dip = NULL;
3146 		return (DDI_WALK_TERMINATE);
3147 	}
3148 
3149 	/* get the PCI device address info */
3150 	pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi);
3151 	pci_func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi);
3152 
3153 	/*
3154 	 * free the memory allocated by ddi_prop_lookup_int_array
3155 	 */
3156 	ddi_prop_free(pci_rp);
3157 
3158 
3159 	if ((pci_dev == ctrl->device) && (pci_func == ctrl->function)) {
3160 		/* found the match for the specified device address */
3161 		ctrl->dip = dip;
3162 		return (DDI_WALK_TERMINATE);
3163 	}
3164 
3165 	/*
3166 	 * continue the walk to the next sibling to look for a match.
3167 	 */
3168 	return (DDI_WALK_PRUNECHILD);
3169 }
3170 
3171 #if 0
3172 /*
3173  * Probe the configuration space of the slot to determine the receptacle
3174  * state. There may not be any devinfo tree created for this slot.
3175  */
3176 static void
3177 pcihp_probe_slot_state(dev_info_t *dip, int dev, hpc_slot_state_t *rstatep)
3178 {
3179 	/* XXX FIX IT */
3180 }
3181 #endif
3182 
3183 /*
3184  * This routine is called when a ENUM# assertion is detected for a bus.
3185  * Since ENUM# may be bussed, the slot that asserted ENUM# may not be known.
3186  * The HPC Driver passes the handle of a slot that is its best guess.
3187  * If the best guess slot is the one that asserted ENUM#, the proper handling
3188  * will be done.  If its not, all possible slots will be locked at until
3189  * one that is asserting ENUM is found.
3190  * Also, indicate to the HSC to turn on ENUM# after it is serviced,
3191  * incase if it was disabled by the HSC due to the nature of asynchronous
3192  * delivery of interrupt by the framework.
3193  *
3194  * opcode has the following meanings.
3195  * PCIHP_CLEAR_ENUM = just clear interrupt and return the PCI device no. if
3196  *			success, else return -1.
3197  * PCIHP_HANDLE_ENUM = clear interrupt and handle interrupt also.
3198  *
3199  */
3200 static int
pcihp_handle_enum(pcihp_t * pcihp_p,int favorite_pci_dev,int opcode,int kmflag)3201 pcihp_handle_enum(pcihp_t *pcihp_p, int favorite_pci_dev, int opcode,
3202     int kmflag)
3203 {
3204 	struct pcihp_slotinfo *slotinfop;
3205 	int pci_dev, rc, event_serviced = 0;
3206 
3207 	/*
3208 	 * Handle ENUM# condition for the "favorite" slot first.
3209 	 */
3210 	slotinfop = &pcihp_p->slotinfo[favorite_pci_dev];
3211 	if (slotinfop) {
3212 		/*
3213 		 * First try the "favorite" pci device.  This is the device
3214 		 * associated with the handle passed by the HPC Driver.
3215 		 */
3216 		rc = pcihp_enum_slot(pcihp_p, slotinfop, favorite_pci_dev,
3217 		    opcode, kmflag);
3218 		if (rc != HPC_EVENT_UNCLAIMED) {	/* indicates success */
3219 			event_serviced = 1;
3220 			/* This MUST be a non-DEBUG feature. */
3221 			if (! pcihp_enum_scan_all) {
3222 				return (rc);
3223 			}
3224 		}
3225 	}
3226 
3227 	/*
3228 	 * If ENUM# is implemented as a radial signal, then there is no
3229 	 * need to further poll the slots.
3230 	 */
3231 	if (pcihp_p->bus_flags & PCIHP_BUS_ENUM_RADIAL)
3232 		goto enum_service_check;
3233 
3234 	/*
3235 	 * If the "favorite" pci device didn't assert ENUM#, then
3236 	 * try the rest.  Once we find and handle a device that asserted
3237 	 * ENUM#, then we will terminate the walk by returning unless
3238 	 * scan-all flag is set.
3239 	 */
3240 	for (pci_dev = 0; pci_dev < PCI_MAX_DEVS; pci_dev++) {
3241 		if (pci_dev != favorite_pci_dev) {
3242 			slotinfop = &pcihp_p->slotinfo[pci_dev];
3243 			if (slotinfop == NULL) {
3244 				continue;
3245 			}
3246 			/* Only CPCI devices support ENUM# generation. */
3247 			if (!(slotinfop->slot_type & HPC_SLOT_TYPE_CPCI))
3248 				continue;
3249 			rc = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev,
3250 			    opcode, kmflag);
3251 			if (rc != HPC_EVENT_UNCLAIMED) {
3252 				event_serviced = 1;
3253 				/* This MUST be a non-DEBUG feature. */
3254 				if (! pcihp_enum_scan_all)
3255 					break;
3256 			}
3257 		}
3258 	}
3259 
3260 enum_service_check:
3261 	if (event_serviced) {
3262 		return (rc);
3263 	}
3264 
3265 	/* No ENUM# event found, Return */
3266 	return (HPC_EVENT_UNCLAIMED);
3267 }
3268 
3269 /*
3270  * This routine attempts to handle a possible ENUM# assertion case for a
3271  * specified slot.  This only works for adapters that implement Hot Swap
3272  * Friendly Silicon.  If the slot's HS_CSR is read and it specifies ENUM#
3273  * has been asserted, either the insertion or removal handlers will be
3274  * called.
3275  */
3276 static int
pcihp_enum_slot(pcihp_t * pcihp_p,struct pcihp_slotinfo * slotinfop,int pci_dev,int opcode,int kmflag)3277 pcihp_enum_slot(pcihp_t *pcihp_p, struct pcihp_slotinfo *slotinfop, int pci_dev,
3278     int opcode, int kmflag)
3279 {
3280 	ddi_acc_handle_t handle;
3281 	dev_info_t *dip, *new_child = NULL;
3282 	int result, rv = -1;
3283 	uint8_t hs_csr;
3284 
3285 	if (pcihp_config_setup(&dip, &handle, &new_child, pci_dev,
3286 	    pcihp_p) != DDI_SUCCESS) {
3287 		return (HPC_EVENT_UNCLAIMED);
3288 	}
3289 
3290 	/*
3291 	 * Read the device's HS_CSR.
3292 	 */
3293 	result = pcihp_get_hs_csr(slotinfop, handle, (uint8_t *)&hs_csr);
3294 	PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): hs_csr = %x, flags = %x",
3295 	    ddi_driver_name(pcihp_p->dip), ddi_get_instance(pcihp_p->dip),
3296 	    hs_csr, slotinfop->slot_flags));
3297 	/*
3298 	 * we teardown our device map here, because in case of an
3299 	 * extraction event, our nodes would be freed and a teardown
3300 	 * will cause problems.
3301 	 */
3302 	pcihp_config_teardown(&handle, &new_child, pci_dev, pcihp_p);
3303 
3304 	if (result == PCIHP_SUCCESS) {
3305 
3306 		/* If ENUM# is masked, then it is not us. Some other device */
3307 		if ((hs_csr & HS_CSR_EIM) && (opcode == PCIHP_CLEAR_ENUM))
3308 			return (HPC_EVENT_UNCLAIMED);
3309 		/*
3310 		 * This device supports Full Hot Swap and implements
3311 		 * the Hot Swap Control and Status Register.
3312 		 */
3313 		if ((hs_csr & HS_CSR_INS) ||
3314 		    (slotinfop->slot_flags & PCIHP_SLOT_ENUM_INS_PENDING)) {
3315 			/* handle insertion ENUM */
3316 			PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): "
3317 			    "Handle Insertion ENUM (INS) "
3318 			    "on the bus (for slot %s ?)",
3319 			    ddi_driver_name(pcihp_p->dip),
3320 			    ddi_get_instance(pcihp_p->dip),
3321 			    slotinfop->name));
3322 
3323 			/*
3324 			 * generate sysevent
3325 			 */
3326 
3327 			if (opcode == PCIHP_CLEAR_ENUM)
3328 				pcihp_gen_sysevent(slotinfop->name,
3329 				    PCIHP_DR_REQ,
3330 				    SE_INCOMING_RES, pcihp_p->dip,
3331 				    kmflag);
3332 
3333 			rv = pcihp_handle_enum_insertion(pcihp_p, pci_dev,
3334 			    opcode, kmflag);
3335 
3336 		} else if ((hs_csr & HS_CSR_EXT) ||
3337 		    (slotinfop->slot_flags & PCIHP_SLOT_ENUM_EXT_PENDING)) {
3338 			/* handle extraction ENUM */
3339 			PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): "
3340 			    "Handle Extraction ENUM (EXT) "
3341 			    "on the bus (for slot %s ?)",
3342 			    ddi_driver_name(pcihp_p->dip),
3343 			    ddi_get_instance(pcihp_p->dip),
3344 			    slotinfop->name));
3345 
3346 			/*
3347 			 * generate sysevent
3348 			 */
3349 
3350 			if (opcode == PCIHP_CLEAR_ENUM)
3351 				pcihp_gen_sysevent(slotinfop->name,
3352 				    PCIHP_DR_REQ,
3353 				    SE_OUTGOING_RES,
3354 				    pcihp_p->dip,
3355 				    kmflag);
3356 
3357 			rv = pcihp_handle_enum_extraction(pcihp_p, pci_dev,
3358 			    opcode, kmflag);
3359 		}
3360 		if (opcode == PCIHP_CLEAR_ENUM) {
3361 			if (rv == PCIHP_SUCCESS)
3362 				rv = pci_dev;
3363 			else
3364 				rv = HPC_EVENT_UNCLAIMED;
3365 		}
3366 	}
3367 
3368 	return (rv);
3369 }
3370 
3371 /*
3372  * This routine is called when a ENUM# caused by lifting the lever
3373  * is detected.  If the occupant is configured, it will be unconfigured.
3374  * If the occupant is already unconfigured or is successfully unconfigured,
3375  * the blue LED on the adapter is illuminated which means its OK to remove.
3376  * Please note that the lock must be released before invoking the
3377  * generic AP unconfigure function.
3378  */
3379 static int
pcihp_handle_enum_extraction(pcihp_t * pcihp_p,int pci_dev,int opcode,int kmflag)3380 pcihp_handle_enum_extraction(pcihp_t *pcihp_p, int pci_dev, int opcode,
3381     int kmflag)
3382 {
3383 	struct pcihp_slotinfo *slotinfop;
3384 	int rv = PCIHP_FAILURE;
3385 
3386 	slotinfop = &pcihp_p->slotinfo[pci_dev];
3387 
3388 	/*
3389 	 * It was observed that, clearing the EXT bit turned the LED ON.
3390 	 * This is a BIG problem in case if the unconfigure operation
3391 	 * failed because the board was busy.
3392 	 * In order to avoid this confusing situation (LED ON but the board
3393 	 * is not unconfigured), we instead decided not to clear EXT but
3394 	 * disable further ENUM# from this slot. Disabling ENUM# clears
3395 	 * the interrupt.
3396 	 * Finally before returning we clear the interrupt and enable
3397 	 * ENUM# back again from this slot.
3398 	 */
3399 	pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM);
3400 	if (opcode == PCIHP_CLEAR_ENUM) {
3401 		slotinfop->slot_flags |= PCIHP_SLOT_ENUM_EXT_PENDING;
3402 		return (PCIHP_SUCCESS);
3403 	}
3404 
3405 	mutex_enter(&slotinfop->slot_mutex);
3406 	rv = pcihp_unconfigure_ap(pcihp_p, pci_dev);
3407 	mutex_exit(&slotinfop->slot_mutex);
3408 	if (rv != HPC_SUCCESS && rv != EBUSY) {
3409 		cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on Unconfigure",
3410 		    ddi_driver_name(pcihp_p->dip),
3411 		    ddi_get_instance(pcihp_p->dip), pci_dev);
3412 	}
3413 	if (rv == EBUSY)
3414 		cmn_err(CE_NOTE, "%s%d: PCI device %x Busy",
3415 		    ddi_driver_name(pcihp_p->dip),
3416 		    ddi_get_instance(pcihp_p->dip), pci_dev);
3417 	if (rv) {
3418 		if (pcihp_cpci_blue_led)
3419 			pcihp_hs_csr_op(pcihp_p, pci_dev,
3420 			    HPC_EVENT_SLOT_BLUE_LED_OFF);
3421 	}
3422 	/*
3423 	 * we must clear interrupt in case the unconfigure didn't do it
3424 	 * due to a duplicate interrupt. Extraction is success.
3425 	 */
3426 	pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_UNCONFIGURE);
3427 
3428 	if (!rv) {
3429 		/*
3430 		 * Sys Event Notification.
3431 		 */
3432 		pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE,
3433 		    SE_HINT_REMOVE, pcihp_p->dip, kmflag);
3434 	}
3435 
3436 	/*
3437 	 * Enable interrupts back from this board.
3438 	 * This could potentially be problematic in case if the user is
3439 	 * quick enough to extract the board.
3440 	 * But we must do it just in case if the switch is closed again.
3441 	 */
3442 	pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM);
3443 	slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_EXT_PENDING;
3444 	return (rv);
3445 }
3446 
3447 /*
3448  * This routine is called when a ENUM# caused by when an adapter insertion
3449  * is detected.  If the occupant is successfully configured (i.e. PCI resources
3450  * successfully assigned, the blue LED is left off, otherwise if configuration
3451  * is not successful, the blue LED is illuminated.
3452  * Please note that the lock must be released before invoking the
3453  * generic AP configure function.
3454  */
3455 static int
pcihp_handle_enum_insertion(pcihp_t * pcihp_p,int pci_dev,int opcode,int kmflag)3456 pcihp_handle_enum_insertion(pcihp_t *pcihp_p, int pci_dev, int opcode,
3457     int kmflag)
3458 {
3459 	struct pcihp_slotinfo *slotinfop;
3460 	int rv = PCIHP_FAILURE;
3461 	minor_t ap_minor;
3462 	major_t ap_major;
3463 
3464 	slotinfop = &pcihp_p->slotinfo[pci_dev];
3465 	slotinfop->hs_csr_location = 0;
3466 	/* we clear the interrupt here. This is a must here. */
3467 	pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE);
3468 	/*
3469 	 * disable further interrupt from this board till it is
3470 	 * configured.
3471 	 */
3472 	pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM);
3473 	if (opcode == PCIHP_CLEAR_ENUM) {
3474 		slotinfop->slot_flags |= PCIHP_SLOT_ENUM_INS_PENDING;
3475 		return (PCIHP_SUCCESS);
3476 	}
3477 
3478 	if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) ==
3479 	    PCIHP_SLOT_AUTO_CFG_EN) {
3480 		mutex_enter(&slotinfop->slot_mutex);
3481 		rv = pcihp_configure_ap(pcihp_p, pci_dev);
3482 		mutex_exit(&slotinfop->slot_mutex);
3483 		if (rv != HPC_SUCCESS) {	/* configure failed */
3484 			cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on"
3485 			    " Configure", ddi_driver_name(pcihp_p->dip),
3486 			    ddi_get_instance(pcihp_p->dip), pci_dev);
3487 			if (pcihp_cpci_blue_led)
3488 				pcihp_hs_csr_op(pcihp_p, pci_dev,
3489 				    HPC_EVENT_SLOT_BLUE_LED_ON);
3490 		}
3491 
3492 		/* pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_CLEAR_ENUM); */
3493 		pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM);
3494 
3495 		if (!rv) {
3496 			ap_major = ddi_driver_major(pcihp_p->dip);
3497 			ap_minor = PCIHP_AP_MINOR_NUM(
3498 			    ddi_get_instance(pcihp_p->dip), pci_dev);
3499 			pcihp_create_occupant_props(pcihp_p->dip,
3500 			    makedevice(ap_major, ap_minor), pci_dev);
3501 
3502 			/*
3503 			 * Sys Event Notification.
3504 			 */
3505 			pcihp_gen_sysevent(slotinfop->name,
3506 			    PCIHP_DR_AP_STATE_CHANGE,
3507 			    SE_HINT_INSERT, pcihp_p->dip, kmflag);
3508 		}
3509 
3510 	} else
3511 		rv = PCIHP_SUCCESS;
3512 	slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING;
3513 	return (rv);
3514 }
3515 
3516 /*
3517  * Read the Hot Swap Control and Status Register (HS_CSR) and
3518  * place the result in the location pointed to be hs_csr.
3519  */
3520 static int
pcihp_get_hs_csr(struct pcihp_slotinfo * slotinfop,ddi_acc_handle_t config_handle,uint8_t * hs_csr)3521 pcihp_get_hs_csr(struct pcihp_slotinfo *slotinfop,
3522     ddi_acc_handle_t config_handle, uint8_t *hs_csr)
3523 {
3524 	if (slotinfop->hs_csr_location == -1)
3525 		return (PCIHP_FAILURE);
3526 
3527 	if (slotinfop->hs_csr_location == 0) {
3528 		slotinfop->hs_csr_location =
3529 		    pcihp_get_hs_csr_location(config_handle);
3530 
3531 		if (slotinfop->hs_csr_location == -1)
3532 			return (PCIHP_FAILURE);
3533 	}
3534 	*hs_csr = pci_config_get8(config_handle, slotinfop->hs_csr_location);
3535 	return (PCIHP_SUCCESS);
3536 }
3537 
3538 /*
3539  * Write the Hot Swap Control and Status Register (HS_CSR) with
3540  * the value being pointed at by hs_csr.
3541  */
3542 static void
pcihp_set_hs_csr(struct pcihp_slotinfo * slotinfop,ddi_acc_handle_t config_handle,uint8_t * hs_csr)3543 pcihp_set_hs_csr(struct pcihp_slotinfo *slotinfop,
3544     ddi_acc_handle_t config_handle, uint8_t *hs_csr)
3545 {
3546 	if (slotinfop->hs_csr_location == -1)
3547 		return;
3548 	if (slotinfop->hs_csr_location == 0) {
3549 		slotinfop->hs_csr_location =
3550 		    pcihp_get_hs_csr_location(config_handle);
3551 		if (slotinfop->hs_csr_location == -1)
3552 			return;
3553 	}
3554 	pci_config_put8(config_handle, slotinfop->hs_csr_location, *hs_csr);
3555 	PCIHP_DEBUG((CE_NOTE, "hs_csr wrote %x, read %x", *hs_csr,
3556 	    pci_config_get8(config_handle, slotinfop->hs_csr_location)));
3557 }
3558 
3559 static int
pcihp_get_hs_csr_location(ddi_acc_handle_t config_handle)3560 pcihp_get_hs_csr_location(ddi_acc_handle_t config_handle)
3561 {
3562 	uint8_t	cap_id;
3563 	uint_t	cap_id_loc;
3564 	uint16_t	status;
3565 	int location = -1;
3566 #define	PCI_STAT_ECP_SUPP	0x10
3567 
3568 	/*
3569 	 * Need to check the Status register for ECP support first.
3570 	 * Also please note that for type 1 devices, the
3571 	 * offset could change. Should support type 1 next.
3572 	 */
3573 	status = pci_config_get16(config_handle, PCI_CONF_STAT);
3574 	if (!(status & PCI_STAT_ECP_SUPP)) {
3575 		PCIHP_DEBUG((CE_NOTE, "No Ext Capabilities for device\n"));
3576 		return (-1);
3577 	}
3578 	cap_id_loc = pci_config_get8(config_handle, PCI_CONF_EXTCAP);
3579 
3580 	/*
3581 	 * Walk the list of capabilities, but don't walk past the end
3582 	 * of the Configuration Space Header.
3583 	 */
3584 	while ((cap_id_loc) && (cap_id_loc < PCI_CONF_HDR_SIZE)) {
3585 
3586 		cap_id = pci_config_get8(config_handle, cap_id_loc);
3587 
3588 		if (cap_id == CPCI_HOTSWAP_CAPID) {
3589 			location = cap_id_loc + PCI_ECP_HS_CSR;
3590 			break;
3591 		}
3592 		cap_id_loc = pci_config_get8(config_handle,
3593 		    cap_id_loc + 1);
3594 	}
3595 	return (location);
3596 }
3597 
3598 static int
pcihp_add_dummy_reg_property(dev_info_t * dip,uint_t bus,uint_t device,uint_t func)3599 pcihp_add_dummy_reg_property(dev_info_t *dip,
3600     uint_t bus, uint_t device, uint_t func)
3601 {
3602 	pci_regspec_t dummy_reg;
3603 
3604 	bzero(&dummy_reg, sizeof (dummy_reg));
3605 
3606 	dummy_reg.pci_phys_hi = PCIHP_MAKE_REG_HIGH(bus, device, func, 0);
3607 
3608 	return (ndi_prop_update_int_array(DDI_DEV_T_NONE, dip,
3609 	    "reg", (int *)&dummy_reg, sizeof (pci_regspec_t)/sizeof (int)));
3610 }
3611 
3612 static void
pcihp_hs_csr_op(pcihp_t * pcihp_p,int pci_dev,int event)3613 pcihp_hs_csr_op(pcihp_t *pcihp_p, int pci_dev, int event)
3614 {
3615 	struct pcihp_slotinfo *slotinfop;
3616 	ddi_acc_handle_t config_handle;
3617 	dev_info_t *dip, *new_child = NULL;
3618 	uint8_t hs_csr;
3619 	int result;
3620 
3621 	slotinfop = &pcihp_p->slotinfo[pci_dev];
3622 
3623 	if (pcihp_config_setup(&dip, &config_handle, &new_child, pci_dev,
3624 	    pcihp_p) != DDI_SUCCESS) {
3625 		return;
3626 	}
3627 
3628 	result = pcihp_get_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr);
3629 	if ((result != PCIHP_SUCCESS) || (event == -1)) {
3630 		pcihp_config_teardown(&config_handle, &new_child, pci_dev,
3631 		    pcihp_p);
3632 		return;
3633 	}
3634 
3635 	hs_csr &= 0xf;
3636 	switch (event) {
3637 		case HPC_EVENT_SLOT_BLUE_LED_ON:
3638 			hs_csr |= HS_CSR_LOO;
3639 			break;
3640 		case HPC_EVENT_SLOT_BLUE_LED_OFF:
3641 			hs_csr &= ~HS_CSR_LOO;
3642 			break;
3643 		case HPC_EVENT_SLOT_CONFIGURE:
3644 			hs_csr |= HS_CSR_INS;	/* clear INS */
3645 			break;
3646 		case HPC_EVENT_CLEAR_ENUM:
3647 			hs_csr |= (HS_CSR_INS | HS_CSR_EXT);
3648 			break;
3649 		case HPC_EVENT_SLOT_UNCONFIGURE:
3650 			hs_csr |= HS_CSR_EXT;	/* clear EXT */
3651 			break;
3652 		case HPC_EVENT_ENABLE_ENUM:
3653 			hs_csr &= ~HS_CSR_EIM;
3654 			break;
3655 		case HPC_EVENT_DISABLE_ENUM:
3656 			hs_csr |= HS_CSR_EIM;
3657 			break;
3658 		case HPC_EVENT_SLOT_NOT_HEALTHY:
3659 		case HPC_EVENT_SLOT_HEALTHY_OK:
3660 		default:
3661 			break;
3662 	}
3663 	pcihp_set_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr);
3664 	pcihp_config_teardown(&config_handle, &new_child, pci_dev, pcihp_p);
3665 }
3666 
3667 static int
pcihp_config_setup(dev_info_t ** dip,ddi_acc_handle_t * handle,dev_info_t ** new_child,int pci_dev,pcihp_t * pcihp_p)3668 pcihp_config_setup(dev_info_t **dip, ddi_acc_handle_t *handle,
3669     dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p)
3670 {
3671 	dev_info_t *pdip = pcihp_p->dip;
3672 	int bus, len, rc = DDI_SUCCESS;
3673 	struct pcihp_slotinfo *slotinfop;
3674 	hpc_slot_state_t rstate;
3675 	ddi_acc_hdl_t *hp;
3676 	pci_bus_range_t pci_bus_range;
3677 
3678 	slotinfop = &pcihp_p->slotinfo[pci_dev];
3679 
3680 	/*
3681 	 * If declared failed, don't allow Config operations.
3682 	 * Otherwise, if good or failing, it is assumed Ok
3683 	 * to get config data.
3684 	 */
3685 	if (slotinfop->condition == AP_COND_FAILED) {
3686 		return (PCIHP_FAILURE);
3687 	}
3688 	/*
3689 	 * check to see if there is a hardware present first.
3690 	 * If no hardware present, no need to probe this slot.
3691 	 * We can do this first probably as a first step towards
3692 	 * safeguarding from accidental removal (we don't support it!).
3693 	 */
3694 	if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_SLOT_STATE,
3695 	    (caddr_t)&rstate) != 0) {
3696 		return (DDI_FAILURE);
3697 	}
3698 
3699 	if (rstate != HPC_SLOT_CONNECTED) {
3700 		/* error. slot must be connected */
3701 		return (DDI_FAILURE);
3702 	}
3703 	*new_child = NULL;
3704 
3705 	/*
3706 	 * If there is no dip then we need to see if an
3707 	 * adapter has just been hot plugged.
3708 	 */
3709 	len = sizeof (pci_bus_range_t);
3710 	if (ddi_getlongprop_buf(DDI_DEV_T_ANY, pdip,
3711 	    0, "bus-range",
3712 	    (caddr_t)&pci_bus_range, &len) != DDI_SUCCESS) {
3713 
3714 		return (PCIHP_FAILURE);
3715 	}
3716 
3717 	/* primary bus number of this bus node */
3718 	bus = pci_bus_range.lo;
3719 
3720 	if (ndi_devi_alloc(pdip, DEVI_PSEUDO_NEXNAME,
3721 	    (pnode_t)DEVI_SID_NODEID, dip) != NDI_SUCCESS) {
3722 
3723 		PCIHP_DEBUG((CE_NOTE, "Failed to alloc probe node\n"));
3724 		return (PCIHP_FAILURE);
3725 	}
3726 
3727 	if (pcihp_add_dummy_reg_property(*dip, bus,
3728 	    pci_dev, 0) != DDI_SUCCESS) {
3729 
3730 		(void) ndi_devi_free(*dip);
3731 		return (PCIHP_FAILURE);
3732 	}
3733 
3734 	/*
3735 	 * Probe for a device. Possibly a non (c)PCI board could be sitting
3736 	 * here which would never respond to PCI config cycles - in which
3737 	 * case we return. Eventually a configure operation would fail.
3738 	 */
3739 	if (pci_config_setup(*dip, handle) != DDI_SUCCESS) {
3740 		cmn_err(CE_WARN, "Cannot set config space map for"
3741 		    " pci device number %d", pci_dev);
3742 		(void) ndi_devi_free(*dip);
3743 		return (PCIHP_FAILURE);
3744 	}
3745 
3746 	/*
3747 	 * See if there is any PCI HW at this location
3748 	 * by reading the Vendor ID.  If it returns with 0xffff
3749 	 * then there is no hardware at this location.
3750 	 */
3751 	if (pcihp_indirect_map(*dip) == DDI_SUCCESS) {
3752 		if (pci_config_get16(*handle, 0) == 0xffff) {
3753 			pci_config_teardown(handle);
3754 			(void) ndi_devi_free(*dip);
3755 			return (PCIHP_FAILURE);
3756 		}
3757 	} else {
3758 		/* Check if mapping is OK */
3759 		hp = impl_acc_hdl_get(*handle);
3760 
3761 		if (ddi_peek16(*dip, (int16_t *)(hp->ah_addr),
3762 		    (int16_t *)0) != DDI_SUCCESS) {
3763 #ifdef DEBUG
3764 			cmn_err(CE_WARN, "Cannot Map PCI config space for "
3765 			    "device number %d", pci_dev);
3766 #endif
3767 			pci_config_teardown(handle);
3768 			(void) ndi_devi_free(*dip);
3769 			return (PCIHP_FAILURE);
3770 		}
3771 	}
3772 
3773 	*new_child = *dip;
3774 	return (rc);
3775 
3776 }
3777 
3778 static void
pcihp_config_teardown(ddi_acc_handle_t * handle,dev_info_t ** new_child,int pci_dev,pcihp_t * pcihp_p)3779 pcihp_config_teardown(ddi_acc_handle_t *handle,
3780     dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p)
3781 {
3782 	struct pcihp_slotinfo *slotinfop = &pcihp_p->slotinfo[pci_dev];
3783 
3784 	pci_config_teardown(handle);
3785 	if (*new_child) {
3786 		(void) ndi_devi_free(*new_child);
3787 		/*
3788 		 * If occupant not configured, reset HS_CSR location
3789 		 * so that we reprobe. This covers cases where
3790 		 * the receptacle had a status change without a
3791 		 * notification to the framework.
3792 		 */
3793 		if (slotinfop->ostate != AP_OSTATE_CONFIGURED)
3794 			slotinfop->hs_csr_location = 0;
3795 	}
3796 }
3797 
3798 static int
pcihp_get_board_type(struct pcihp_slotinfo * slotinfop)3799 pcihp_get_board_type(struct pcihp_slotinfo *slotinfop)
3800 {
3801 	hpc_board_type_t board_type;
3802 
3803 	/*
3804 	 * Get board type data structure, hpc_board_type_t.
3805 	 */
3806 	if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_BOARD_TYPE,
3807 	    (caddr_t)&board_type) != 0) {
3808 
3809 		cmn_err(CE_WARN, "Cannot Get Board Type..");
3810 		return (-1);
3811 	}
3812 
3813 	/*
3814 	 * We expect the Hotswap Controller to tell us if the board is
3815 	 * a hotswap board or not, as it probably cannot differentiate
3816 	 * between a basic hotswap board, a non hotswap board and a
3817 	 * hotswap nonfriendly board.
3818 	 * So here is the logic to differentiate between the various
3819 	 * types of cPCI boards.
3820 	 * In case if the HSC returns board type as unknown, we assign
3821 	 * the default board type as defined by a configurable variable
3822 	 * for a BHS, nonfriendly FHS and non HS board.
3823 	 */
3824 	if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) {
3825 		if (slotinfop->hs_csr_location > 0)
3826 			board_type = HPC_BOARD_CPCI_FULL_HS;
3827 		else {
3828 			if (board_type == HPC_BOARD_CPCI_HS) {
3829 				if (slotinfop->hs_csr_location == -1)
3830 					board_type = HPC_BOARD_CPCI_BASIC_HS;
3831 			}
3832 			if (board_type == HPC_BOARD_UNKNOWN) {
3833 				if (slotinfop->hs_csr_location == -1) {
3834 					board_type = pcihp_cpci_board_type;
3835 				} else if (slotinfop->hs_csr_location != 0) {
3836 					board_type = HPC_BOARD_CPCI_FULL_HS;
3837 				}
3838 			}
3839 		}
3840 		/*
3841 		 * If board type is a non hotswap board, then we must
3842 		 * deny a unconfigure operation. So set this flag.
3843 		 * Strictly speaking, there is no reason not to disallow
3844 		 * a unconfigure operation on nonhotswap boards. But this
3845 		 * is the only way we can prevent a user from accidentally
3846 		 * removing the board and damaging it.
3847 		 */
3848 		if (board_type == HPC_BOARD_CPCI_NON_HS)
3849 			slotinfop->slot_flags |= PCIHP_SLOT_DEV_NON_HOTPLUG;
3850 		else
3851 			slotinfop->slot_flags &= ~PCIHP_SLOT_DEV_NON_HOTPLUG;
3852 	}
3853 	return (board_type);
3854 }
3855 
3856 
3857 /*
3858  * Generate the System Event with a possible hint.
3859  */
3860 static void
pcihp_gen_sysevent(char * slot_name,int event_sub_class,int hint,dev_info_t * self,int kmflag)3861 pcihp_gen_sysevent(char *slot_name, int event_sub_class, int hint,
3862     dev_info_t *self, int kmflag)
3863 {
3864 
3865 	int err;
3866 	char *ev_subclass = NULL;
3867 	sysevent_id_t eid;
3868 	nvlist_t *ev_attr_list = NULL;
3869 	char attach_pnt[MAXPATHLEN];
3870 
3871 	/*
3872 	 * Minor device name (AP) will be bus path
3873 	 * concatenated with slot name
3874 	 */
3875 
3876 	(void) strcpy(attach_pnt, PCIHP_DEVICES_STR);
3877 	(void) ddi_pathname(self, attach_pnt + strlen(PCIHP_DEVICES_STR));
3878 	(void) strcat(attach_pnt, ":");
3879 	(void) strcat(attach_pnt, slot_name);
3880 	err = nvlist_alloc(&ev_attr_list, NV_UNIQUE_NAME_TYPE, kmflag);
3881 	if (err != 0) {
3882 		cmn_err(CE_WARN,
3883 		    "%s%d: Failed to allocate memory "
3884 		    "for event attributes%s", ddi_driver_name(self),
3885 		    ddi_get_instance(self), ESC_DR_AP_STATE_CHANGE);
3886 		return;
3887 	}
3888 
3889 	switch (event_sub_class) {
3890 
3891 	/* event sub class: ESC_DR_AP_STATE_CHANGE */
3892 	case PCIHP_DR_AP_STATE_CHANGE:
3893 
3894 		ev_subclass = ESC_DR_AP_STATE_CHANGE;
3895 
3896 		switch (hint) {
3897 
3898 		case SE_NO_HINT:	/* fall through */
3899 		case SE_HINT_INSERT:	/* fall through */
3900 		case SE_HINT_REMOVE:
3901 
3902 
3903 			err = nvlist_add_string(ev_attr_list, DR_HINT,
3904 			    SE_HINT2STR(hint));
3905 
3906 			if (err != 0) {
3907 				cmn_err(CE_WARN, "%s%d: Failed to add attr [%s]"
3908 				    " for %s event", ddi_driver_name(self),
3909 				    ddi_get_instance(self),
3910 				    DR_HINT, ESC_DR_AP_STATE_CHANGE);
3911 				nvlist_free(ev_attr_list);
3912 				return;
3913 			}
3914 			break;
3915 
3916 		default:
3917 			cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent",
3918 			    ddi_driver_name(self), ddi_get_instance(self));
3919 			nvlist_free(ev_attr_list);
3920 			return;
3921 		}
3922 
3923 		break;
3924 
3925 	/* event sub class: ESC_DR_REQ */
3926 	case PCIHP_DR_REQ:
3927 
3928 		ev_subclass = ESC_DR_REQ;
3929 
3930 		switch (hint) {
3931 
3932 		case SE_INVESTIGATE_RES:	/* fall through */
3933 		case SE_INCOMING_RES:	/* fall through */
3934 		case SE_OUTGOING_RES:	/* fall through */
3935 
3936 			err = nvlist_add_string(ev_attr_list, DR_REQ_TYPE,
3937 			    SE_REQ2STR(hint));
3938 
3939 			if (err != 0) {
3940 				cmn_err(CE_WARN,
3941 				    "%s%d: Failed to add attr [%s] "
3942 				    "for %s event", ddi_driver_name(self),
3943 				    ddi_get_instance(self),
3944 				    DR_REQ_TYPE, ESC_DR_REQ);
3945 				nvlist_free(ev_attr_list);
3946 				return;
3947 			}
3948 			break;
3949 
3950 		default:
3951 			cmn_err(CE_WARN, "%s%d:  Unknown hint on sysevent",
3952 			    ddi_driver_name(self), ddi_get_instance(self));
3953 			nvlist_free(ev_attr_list);
3954 			return;
3955 		}
3956 
3957 		break;
3958 
3959 	default:
3960 		cmn_err(CE_WARN, "%s%d:  Unknown Event subclass",
3961 		    ddi_driver_name(self), ddi_get_instance(self));
3962 		nvlist_free(ev_attr_list);
3963 		return;
3964 	}
3965 
3966 	/*
3967 	 * Add attachment point as attribute (common attribute)
3968 	 */
3969 
3970 	err = nvlist_add_string(ev_attr_list, DR_AP_ID, attach_pnt);
3971 
3972 	if (err != 0) {
3973 		cmn_err(CE_WARN, "%s%d: Failed to add attr [%s] for %s event",
3974 		    ddi_driver_name(self), ddi_get_instance(self),
3975 		    DR_AP_ID, EC_DR);
3976 		nvlist_free(ev_attr_list);
3977 		return;
3978 	}
3979 
3980 
3981 	/*
3982 	 * Log this event with sysevent framework.
3983 	 */
3984 
3985 	err = ddi_log_sysevent(self, DDI_VENDOR_SUNW, EC_DR,
3986 	    ev_subclass, ev_attr_list, &eid,
3987 	    ((kmflag == KM_SLEEP) ? DDI_SLEEP : DDI_NOSLEEP));
3988 	if (err != 0) {
3989 		cmn_err(CE_WARN, "%s%d: Failed to log %s event",
3990 		    ddi_driver_name(self), ddi_get_instance(self), EC_DR);
3991 	}
3992 
3993 	nvlist_free(ev_attr_list);
3994 }
3995 
3996 int
pcihp_prop_op(dev_t dev,dev_info_t * dip,ddi_prop_op_t prop_op,int flags,char * name,caddr_t valuep,int * lengthp)3997 pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op,
3998     int flags, char *name, caddr_t valuep, int *lengthp)
3999 {
4000 	int pci_dev;
4001 
4002 	if (dev == DDI_DEV_T_ANY)
4003 		goto skip;
4004 
4005 	if (strcmp(name, "pci-occupant") == 0) {
4006 		pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev));
4007 		pcihp_create_occupant_props(dip, dev, pci_dev);
4008 	}
4009 	/* other cases... */
4010 skip:
4011 	return (ddi_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp));
4012 }
4013 
4014 /*
4015  * this function is called only for SPARC platforms, where we may have
4016  * a mix n' match of direct vs indirectly mapped configuration space.
4017  * On x86, this function should always return success since the configuration
4018  * space is always indirect mapped.
4019  */
4020 /*ARGSUSED*/
4021 static int
pcihp_indirect_map(dev_info_t * dip)4022 pcihp_indirect_map(dev_info_t *dip)
4023 {
4024 #if defined(__sparc)
4025 	int rc = DDI_FAILURE;
4026 
4027 	if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 0,
4028 	    PCI_DEV_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE)
4029 		rc = DDI_SUCCESS;
4030 	else
4031 		if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip),
4032 		    0, PCI_BUS_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE)
4033 			rc = DDI_SUCCESS;
4034 	return (rc);
4035 #else
4036 	return (DDI_SUCCESS);
4037 #endif
4038 }
4039