xref: /illumos-gate/usr/src/uts/sun4/io/px/px_util.c (revision e214b19e)
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 2010 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 /*
27  * PCI nexus utility routines:
28  *	property and config routines for attach()
29  *	reg/intr/range/assigned-address property routines for bus_map()
30  *	init_child()
31  *	fault handling
32  */
33 
34 #include <sys/types.h>
35 #include <sys/kmem.h>
36 #include <sys/async.h>
37 #include <sys/sysmacros.h>
38 #include <sys/sunddi.h>
39 #include <sys/sunndi.h>
40 #include <sys/ddi_impldefs.h>
41 #include "px_obj.h"
42 #include <sys/pcie_pwr.h>
43 
44 /*
45  * px_get_props
46  *
47  * This function is called from the attach routine to get the key
48  * properties of the pci nodes.
49  *
50  * used by: px_attach()
51  *
52  * return value: DDI_FAILURE on failure
53  */
54 int
px_get_props(px_t * px_p,dev_info_t * dip)55 px_get_props(px_t *px_p, dev_info_t *dip)
56 {
57 	int i, no_of_intrs;
58 
59 	/*
60 	 * Get the bus-ranges property.
61 	 */
62 	i = sizeof (px_p->px_bus_range);
63 	if (ddi_getlongprop_buf(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
64 	    "bus-range", (caddr_t)&px_p->px_bus_range, &i) != DDI_SUCCESS) {
65 		cmn_err(CE_WARN, "%s%d: no bus-range property\n",
66 		    ddi_driver_name(dip), ddi_get_instance(dip));
67 		return (DDI_FAILURE);
68 	}
69 	DBG(DBG_ATTACH, dip, "get_px_properties: bus-range (%x,%x)\n",
70 	    px_p->px_bus_range.lo, px_p->px_bus_range.hi);
71 
72 	/*
73 	 * Get the interrupts property.
74 	 */
75 	if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
76 	    "interrupts", (caddr_t)&px_p->px_inos,
77 	    &px_p->px_inos_len) != DDI_SUCCESS) {
78 
79 		cmn_err(CE_WARN, "%s%d: no interrupts property\n",
80 		    ddi_driver_name(dip), ddi_get_instance(dip));
81 		return (DDI_FAILURE);
82 	}
83 
84 	/*
85 	 * figure out number of interrupts in the "interrupts" property
86 	 * and convert them all into ino.
87 	 */
88 	i = ddi_getprop(DDI_DEV_T_ANY, dip, 0, "#interrupt-cells", 1);
89 	i = CELLS_1275_TO_BYTES(i);
90 	no_of_intrs = px_p->px_inos_len / i;
91 	for (i = 0; i < no_of_intrs; i++)
92 		px_p->px_inos[i] = px_p->px_inos[i] & 0x3F;
93 
94 	/*
95 	 * Get the ranges property.
96 	 */
97 	if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "ranges",
98 	    (caddr_t)&px_p->px_ranges_p, &px_p->px_ranges_length) !=
99 	    DDI_SUCCESS) {
100 
101 		cmn_err(CE_WARN, "%s%d: no ranges property\n",
102 		    ddi_driver_name(dip), ddi_get_instance(dip));
103 		kmem_free(px_p->px_inos, px_p->px_inos_len);
104 		return (DDI_FAILURE);
105 	}
106 
107 	return (DDI_SUCCESS);
108 }
109 
110 /*
111  * px_free_props:
112  *
113  * This routine frees the memory used to cache the "interrupts"
114  * and "ranges" properties of the pci bus device node.
115  *
116  * used by: px_detach()
117  *
118  * return value: none
119  */
120 void
px_free_props(px_t * px_p)121 px_free_props(px_t *px_p)
122 {
123 	kmem_free(px_p->px_inos, px_p->px_inos_len);
124 	kmem_free(px_p->px_ranges_p, px_p->px_ranges_length);
125 }
126 
127 /*
128  * px_reloc_reg
129  *
130  * If the "reg" entry (*px_rp) is relocatable, lookup "assigned-addresses"
131  * property to fetch corresponding relocated address.
132  *
133  * used by: px_map()
134  *
135  * return value:
136  *
137  *	DDI_SUCCESS		- on success
138  *	DDI_ME_INVAL		- regspec is invalid
139  */
140 int
px_reloc_reg(dev_info_t * dip,dev_info_t * rdip,px_t * px_p,pci_regspec_t * rp)141 px_reloc_reg(dev_info_t *dip, dev_info_t *rdip, px_t *px_p,
142 	pci_regspec_t *rp)
143 {
144 	int assign_len, assign_entries, i;
145 	pci_regspec_t *assign_p;
146 	uint32_t phys_hi = rp->pci_phys_hi;
147 	uint32_t space_type = phys_hi & PCI_REG_ADDR_M;	/* 28-bit */
148 
149 	DBG(DBG_MAP | DBG_CONT, dip, "\tpx_reloc_reg fr: %x.%x.%x %x.%x\n",
150 	    rp->pci_phys_hi, rp->pci_phys_mid, rp->pci_phys_low,
151 	    rp->pci_size_hi, rp->pci_size_low);
152 
153 	if (space_type == PCI_ADDR_CONFIG || phys_hi & PCI_RELOCAT_B)
154 		return (DDI_SUCCESS);
155 
156 	/*
157 	 * Hot plug will be taken care of later
158 	 * if (px_p->hotplug_capable == B_FALSE)
159 	 */
160 	{
161 		uint32_t bus = PCI_REG_BUS_G(phys_hi);
162 		if (bus < px_p->px_bus_range.lo ||
163 		    bus > px_p->px_bus_range.hi) {
164 			DBG(DBG_MAP | DBG_CONT, dip, "bad bus# (%x)\n", bus);
165 			return (DDI_ME_INVAL);
166 		}
167 	}
168 
169 	i = ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS,
170 	    "assigned-addresses", (caddr_t)&assign_p, &assign_len);
171 
172 	if (i) {
173 		DBG(DBG_MAP | DBG_CONT, dip, "%s%d: assigned-addresses %d\n",
174 		    ddi_driver_name(rdip), ddi_get_instance(rdip), i);
175 		return (DDI_ME_INVAL);
176 	}
177 
178 	assign_entries = assign_len / sizeof (pci_regspec_t);
179 	for (i = 0; i < assign_entries; i++, assign_p++) {
180 		uint32_t assign_type = assign_p->pci_phys_hi & PCI_REG_ADDR_M;
181 		uint32_t assign_addr = PCI_REG_BDFR_G(assign_p->pci_phys_hi);
182 
183 		if (PCI_REG_BDFR_G(phys_hi) != assign_addr)
184 			continue;
185 		if (space_type == assign_type) { /* exact match */
186 			rp->pci_phys_low += assign_p->pci_phys_low;
187 			if (space_type == PCI_ADDR_MEM64)
188 				rp->pci_phys_mid += assign_p->pci_phys_mid;
189 			break;
190 		}
191 		if (space_type == PCI_ADDR_MEM64 &&
192 		    assign_type == PCI_ADDR_MEM32) {
193 			rp->pci_phys_low += assign_p->pci_phys_low;
194 			rp->pci_phys_hi ^= PCI_ADDR_MEM64 ^ PCI_ADDR_MEM32;
195 			break;
196 		}
197 	}
198 	kmem_free(assign_p - i, assign_len);
199 	DBG(DBG_MAP | DBG_CONT, dip, "\tpx_reloc_reg to: %x.%x.%x %x.%x <%d>\n",
200 	    rp->pci_phys_hi, rp->pci_phys_mid, rp->pci_phys_low,
201 	    rp->pci_size_hi, rp->pci_size_low, i);
202 	return (i < assign_entries ? DDI_SUCCESS : DDI_ME_INVAL);
203 }
204 
205 /*
206  * use "ranges" to translate relocated pci regspec into parent space
207  */
208 int
px_xlate_reg(px_t * px_p,pci_regspec_t * px_rp,struct regspec * new_rp)209 px_xlate_reg(px_t *px_p, pci_regspec_t *px_rp, struct regspec *new_rp)
210 {
211 	int n;
212 	pci_ranges_t *rng_p = px_p->px_ranges_p;
213 	int rng_n = px_p->px_ranges_length / sizeof (pci_ranges_t);
214 	uint32_t space_type = PCI_REG_ADDR_G(px_rp->pci_phys_hi);
215 	uint64_t reg_begin, reg_end, reg_sz;
216 	uint64_t rng_begin, rng_end, rng_sz;
217 	uint64_t addr;
218 
219 	reg_begin = (uint64_t)px_rp->pci_phys_mid << 32 | px_rp->pci_phys_low;
220 	reg_sz = (uint64_t)px_rp->pci_size_hi << 32 | px_rp->pci_size_low;
221 	if (space_type == PCI_REG_ADDR_G(PCI_ADDR_CONFIG)) {
222 		if (reg_begin > PCI_CONF_HDR_SIZE)
223 			return (DDI_ME_INVAL);
224 		reg_sz = reg_sz ? MIN(reg_sz, PCI_CONF_HDR_SIZE) :
225 		    PCI_CONF_HDR_SIZE;
226 		reg_begin += px_rp->pci_phys_hi << 4;
227 	}
228 	reg_end = reg_begin + reg_sz - 1;
229 
230 	for (n = 0; n < rng_n; n++, rng_p++) {
231 		if (space_type != PCI_REG_ADDR_G(rng_p->child_high))
232 			continue;	/* not the same space type */
233 
234 		rng_begin = (uint64_t)rng_p->child_mid << 32 | rng_p->child_low;
235 		rng_sz = (uint64_t)rng_p->size_high << 32 | rng_p->size_low;
236 		if (space_type == PCI_REG_ADDR_G(PCI_ADDR_CONFIG))
237 			rng_begin += rng_p->child_high;
238 
239 		rng_end = rng_begin + rng_sz - 1;
240 		if (reg_begin >= rng_begin && reg_end <= rng_end)
241 			break;
242 	}
243 	if (n >= rng_n)
244 		return (DDI_ME_REGSPEC_RANGE);
245 
246 	addr = reg_begin - rng_begin + ((uint64_t)rng_p->parent_high << 32 |
247 	    rng_p->parent_low);
248 	new_rp->regspec_addr = (uint32_t)addr;
249 	new_rp->regspec_bustype = (uint32_t)(addr >> 32);
250 	new_rp->regspec_size = (uint32_t)reg_sz;
251 	DBG(DBG_MAP | DBG_CONT, px_p->px_dip,
252 	    "\tpx_xlate_reg: entry %d new_rp %x.%x %x\n",
253 	    n, new_rp->regspec_bustype, new_rp->regspec_addr, reg_sz);
254 
255 	return (DDI_SUCCESS);
256 }
257 
258 /*
259  * px_report_dev
260  *
261  * This function is called from our control ops routine on a
262  * DDI_CTLOPS_REPORTDEV request.
263  *
264  * The display format is
265  *
266  *	<name><inst> at <pname><pinst> device <dev> function <func>
267  *
268  * where
269  *
270  *	<name>		this device's name property
271  *	<inst>		this device's instance number
272  *	<name>		parent device's name property
273  *	<inst>		parent device's instance number
274  *	<dev>		this device's device number
275  *	<func>		this device's function number
276  */
277 int
px_report_dev(dev_info_t * dip)278 px_report_dev(dev_info_t *dip)
279 {
280 	if (dip == (dev_info_t *)0)
281 		return (DDI_FAILURE);
282 	cmn_err(CE_CONT, "?PCI Express-device: %s@%s, %s%d\n",
283 	    ddi_node_name(dip), ddi_get_name_addr(dip),
284 	    ddi_driver_name(dip),
285 	    ddi_get_instance(dip));
286 	return (DDI_SUCCESS);
287 }
288 
289 
290 /*
291  * reg property for pcimem nodes that covers the entire address
292  * space for the node:  config, io, or memory.
293  */
294 pci_regspec_t pci_pcimem_reg[3] =
295 {
296 	{PCI_ADDR_CONFIG,			0, 0, 0, 0x800000	},
297 	{(uint_t)(PCI_ADDR_IO|PCI_RELOCAT_B),	0, 0, 0, PX_IO_SIZE	},
298 	{(uint_t)(PCI_ADDR_MEM32|PCI_RELOCAT_B), 0, 0, 0, PX_MEM_SIZE	}
299 };
300 
301 /*
302  * px_name_child
303  *
304  * This function is called from init_child to name a node. It is
305  * also passed as a callback for node merging functions.
306  *
307  * return value: DDI_SUCCESS, DDI_FAILURE
308  */
309 static int
px_name_child(dev_info_t * child,char * name,int namelen)310 px_name_child(dev_info_t *child, char *name, int namelen)
311 {
312 	pci_regspec_t *pci_rp;
313 	int reglen;
314 	uint_t func;
315 	char **unit_addr;
316 	uint_t n;
317 
318 	/*
319 	 * Set the address portion of the node name based on
320 	 * unit-address property, if it exists.
321 	 * The interpretation of the unit-address is DD[,F]
322 	 * where DD is the device id and F is the function.
323 	 */
324 	if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, child,
325 	    DDI_PROP_DONTPASS, "unit-address", &unit_addr, &n) ==
326 	    DDI_PROP_SUCCESS) {
327 		if (n != 1 || *unit_addr == NULL || **unit_addr == 0) {
328 			cmn_err(CE_WARN, "unit-address property in %s.conf"
329 			    " not well-formed", ddi_driver_name(child));
330 			ddi_prop_free(unit_addr);
331 			return (DDI_FAILURE);
332 		}
333 		(void) snprintf(name, namelen, "%s", *unit_addr);
334 		ddi_prop_free(unit_addr);
335 		return (DDI_SUCCESS);
336 	}
337 
338 	/*
339 	 * The unit-address property is does not exist. Set the address
340 	 * portion of the node name based on the function and device number.
341 	 */
342 	if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
343 	    "reg", (int **)&pci_rp, (uint_t *)&reglen) == DDI_SUCCESS) {
344 		if (((reglen * sizeof (int)) % sizeof (pci_regspec_t)) != 0) {
345 			cmn_err(CE_WARN, "reg property not well-formed");
346 			return (DDI_FAILURE);
347 		}
348 
349 		func = PCI_REG_FUNC_G(pci_rp[0].pci_phys_hi);
350 		if (func != 0)
351 			(void) snprintf(name, namelen, "%x,%x",
352 			    PCI_REG_DEV_G(pci_rp[0].pci_phys_hi), func);
353 		else
354 			(void) snprintf(name, namelen, "%x",
355 			    PCI_REG_DEV_G(pci_rp[0].pci_phys_hi));
356 		ddi_prop_free(pci_rp);
357 		return (DDI_SUCCESS);
358 	}
359 
360 	cmn_err(CE_WARN, "cannot name pci child '%s'", ddi_node_name(child));
361 	return (DDI_FAILURE);
362 }
363 
364 int
px_uninit_child(px_t * px_p,dev_info_t * child)365 px_uninit_child(px_t *px_p, dev_info_t *child)
366 {
367 	DBG(DBG_INIT_CLD, px_p->px_dip,
368 	    "DDI_CTLOPS_UNINITCHILD: arg=%s%d\n",
369 	    ddi_driver_name(child), ddi_get_instance(child));
370 
371 	ddi_set_name_addr(child, NULL);
372 	ddi_remove_minor_node(child, NULL);
373 
374 	/*
375 	 * XXX Clear parent private data used as a flag to disable
376 	 * iommu BDF protection
377 	 */
378 	if ((intptr_t)ddi_get_parent_data(child) == 1)
379 		ddi_set_parent_data(child, NULL);
380 
381 	impl_rem_dev_props(child);
382 
383 	DBG(DBG_PWR, ddi_get_parent(child), "\n\n");
384 
385 	pcie_uninitchild(child);
386 
387 	return (DDI_SUCCESS);
388 }
389 
390 /*
391  * px_init_child
392  *
393  * This function is called from our control ops routine on a
394  * DDI_CTLOPS_INITCHILD request.  It builds and sets the device's
395  * parent private data area.
396  *
397  * used by: pci_ctlops()
398  *
399  * return value: none
400  */
401 int
px_init_child(px_t * px_p,dev_info_t * child)402 px_init_child(px_t *px_p, dev_info_t *child)
403 {
404 	dev_info_t	*parent_dip = px_p->px_dip;
405 	pci_regspec_t	*pci_rp;
406 	char		name[10];
407 	int		i, no_config;
408 	intptr_t	ppd = (intptr_t)NULL;
409 
410 	/*
411 	 * The following is a special case for pcimem nodes.
412 	 * For these nodes we create a reg property with a
413 	 * single entry that covers the entire address space
414 	 * for the node (config, io or memory).
415 	 */
416 	if (strcmp(ddi_driver_name(child), "pcimem") == 0) {
417 		(void) ddi_prop_create(DDI_DEV_T_NONE, child,
418 		    DDI_PROP_CANSLEEP, "reg", (caddr_t)pci_pcimem_reg,
419 		    sizeof (pci_pcimem_reg));
420 		ddi_set_name_addr(child, "0");
421 		ddi_set_parent_data(child, NULL);
422 		return (DDI_SUCCESS);
423 	}
424 
425 	/*
426 	 * Check whether the node has config space or is a hard decode
427 	 * node (possibly created by a driver.conf file).
428 	 */
429 	no_config = ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
430 	    "no-config", 0);
431 
432 	/*
433 	 * XXX set ppd to 1 to disable iommu BDF protection
434 	 * It relies on unused parent private data for PCI devices.
435 	 */
436 	if (ddi_prop_exists(DDI_DEV_T_NONE, child, DDI_PROP_DONTPASS,
437 	    "dvma-share"))
438 		ppd = 1;
439 
440 	/*
441 	 * Pseudo nodes indicate a prototype node with per-instance
442 	 * properties to be merged into the real h/w device node.
443 	 * However, do not merge if the no-config property is set
444 	 * (see PSARC 2000/088).
445 	 */
446 	if ((ndi_dev_is_persistent_node(child) == 0) && (no_config == 0)) {
447 		extern int pci_allow_pseudo_children;
448 
449 		if (ddi_getlongprop(DDI_DEV_T_ANY, child,
450 		    DDI_PROP_DONTPASS, "reg", (caddr_t)&pci_rp, &i) ==
451 		    DDI_SUCCESS) {
452 			cmn_err(CE_WARN, "cannot merge prototype from %s.conf",
453 			    ddi_driver_name(child));
454 			kmem_free(pci_rp, i);
455 			return (DDI_NOT_WELL_FORMED);
456 		}
457 		/*
458 		 * Name the child
459 		 */
460 		if (px_name_child(child, name, 10) != DDI_SUCCESS)
461 			return (DDI_FAILURE);
462 
463 		ddi_set_name_addr(child, name);
464 		ddi_set_parent_data(child, (void *)ppd);
465 
466 		/*
467 		 * Try to merge the properties from this prototype
468 		 * node into real h/w nodes.
469 		 */
470 		if (ndi_merge_node(child, px_name_child) == DDI_SUCCESS) {
471 			/*
472 			 * Merged ok - return failure to remove the node.
473 			 */
474 			ddi_set_name_addr(child, NULL);
475 			return (DDI_FAILURE);
476 		}
477 
478 		/* workaround for ddivs to run under PCI */
479 		if (pci_allow_pseudo_children)
480 			return (DDI_SUCCESS);
481 
482 		cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged",
483 		    ddi_driver_name(child), ddi_get_name_addr(child),
484 		    ddi_driver_name(child));
485 		ddi_set_name_addr(child, NULL);
486 		return (DDI_NOT_WELL_FORMED);
487 	}
488 
489 	if (px_name_child(child, name, 10) != DDI_SUCCESS)
490 		return (DDI_FAILURE);
491 	ddi_set_name_addr(child, name);
492 
493 	if (no_config != 0) {
494 		/*
495 		 * There is no config space so there's nothing more to do.
496 		 */
497 		return (DDI_SUCCESS);
498 	}
499 
500 	if (pcie_pm_hold(parent_dip) != DDI_SUCCESS) {
501 		DBG(DBG_PWR, parent_dip,
502 		    "INITCHILD: px_pm_hold failed\n");
503 		return (DDI_FAILURE);
504 	}
505 	/* Any return of DDI_FAILURE after this must call px_pm_release */
506 
507 	/*
508 	 * If configuration registers were previously saved by
509 	 * child (before it went to D3), then let the child do the
510 	 * restore to set up the config regs as it'll first need to
511 	 * power the device out of D3.
512 	 */
513 	if (ddi_prop_exists(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
514 	    "config-regs-saved-by-child") == 1) {
515 		DBG(DBG_PWR, child,
516 		    "INITCHILD: config regs to be restored by child\n");
517 
518 		return (DDI_SUCCESS);
519 	}
520 
521 	DBG(DBG_PWR, parent_dip,
522 	    "INITCHILD: config regs setup for %s@%s\n",
523 	    ddi_node_name(child), ddi_get_name_addr(child));
524 
525 	ddi_set_parent_data(child, (void *)ppd);
526 	pcie_init_dom(child);
527 	(void) pcie_initchild(child);
528 
529 	/*
530 	 * Handle chip specific init-child tasks.
531 	 */
532 	pcie_pm_release(parent_dip);
533 
534 	return (DDI_SUCCESS);
535 }
536 
537 /*
538  * px_get_reg_set_size
539  *
540  * Given a dev info pointer to a pci child and a register number, this
541  * routine returns the size element of that reg set property.
542  *
543  * used by: pci_ctlops() - DDI_CTLOPS_REGSIZE
544  *
545  * return value: size of reg set on success, 0 on error
546  */
547 off_t
px_get_reg_set_size(dev_info_t * child,int rnumber)548 px_get_reg_set_size(dev_info_t *child, int rnumber)
549 {
550 	pci_regspec_t *pci_rp;
551 	off_t size = 0;
552 	int i;
553 
554 	if (rnumber < 0)
555 		return (0);
556 
557 	/*
558 	 * Get the reg property for the device.
559 	 */
560 	if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg",
561 	    (caddr_t)&pci_rp, &i) != DDI_SUCCESS)
562 		return (0);
563 
564 	if (rnumber >= (i / (int)sizeof (pci_regspec_t)))
565 		goto done;
566 
567 	size = pci_rp[rnumber].pci_size_low |
568 	    ((uint64_t)pci_rp[rnumber].pci_size_hi << 32);
569 done:
570 	kmem_free(pci_rp, i);
571 	return (size);
572 }
573 
574 
575 /*
576  * px_get_nreg_set
577  *
578  * Given a dev info pointer to a pci child, this routine returns the
579  * number of sets in its "reg" property.
580  *
581  * used by: pci_ctlops() - DDI_CTLOPS_NREGS
582  *
583  * return value: # of reg sets on success, zero on error
584  */
585 uint_t
px_get_nreg_set(dev_info_t * child)586 px_get_nreg_set(dev_info_t *child)
587 {
588 	pci_regspec_t *pci_rp;
589 	int i, n;
590 
591 	/*
592 	 * Get the reg property for the device.
593 	 */
594 	if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg",
595 	    (caddr_t)&pci_rp, &i) != DDI_SUCCESS)
596 		return (0);
597 
598 	n = i / (int)sizeof (pci_regspec_t);
599 	kmem_free(pci_rp, i);
600 	return (n);
601 }
602 
603 
604 /*
605  * px_get_nintr
606  *
607  * Given a dev info pointer to a pci child, this routine returns the
608  * number of items in its "interrupts" property.
609  *
610  * used by: pci_ctlops() - DDI_CTLOPS_NREGS
611  *
612  * return value: # of interrupts on success, zero on error
613  */
614 uint_t
px_get_nintr(dev_info_t * child)615 px_get_nintr(dev_info_t *child)
616 {
617 	int *pci_ip;
618 	int i, n;
619 
620 	if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
621 	    "interrupts", (caddr_t)&pci_ip, &i) != DDI_SUCCESS)
622 		return (0);
623 
624 	n = i / (int)sizeof (uint_t);
625 	kmem_free(pci_ip, i);
626 	return (n);
627 }
628 
629 uint64_t
px_get_cfg_pabase(px_t * px_p)630 px_get_cfg_pabase(px_t *px_p)
631 {
632 	int i;
633 	pci_ranges_t *rangep = px_p->px_ranges_p;
634 	int nrange = px_p->px_ranges_length / sizeof (pci_ranges_t);
635 	uint32_t cfg_space_type = PCI_REG_ADDR_G(PCI_ADDR_CONFIG);
636 
637 	ASSERT(cfg_space_type == 0);
638 
639 	for (i = 0; i < nrange; i++, rangep++) {
640 		if (PCI_REG_ADDR_G(rangep->child_high) == cfg_space_type)
641 			break;
642 	}
643 
644 	if (i >= nrange)
645 		cmn_err(CE_PANIC, "no cfg space in px(%p) ranges prop.\n",
646 		    px_p);
647 
648 	return (((uint64_t)rangep->parent_high << 32) | rangep->parent_low);
649 }
650 
651 /*
652  * decodes standard PCI config space 16bit error status reg
653  */
654 int
px_log_cfg_err(dev_info_t * dip,ushort_t status_reg,char * err_msg)655 px_log_cfg_err(dev_info_t *dip, ushort_t status_reg, char *err_msg)
656 {
657 	int nerr = ddi_get_instance(dip); /* temp for instance */
658 	uint64_t perr_fatal = px_perr_fatal & (1 << nerr);
659 	uint64_t serr_fatal = px_serr_fatal & (1 << nerr);
660 	nerr = 0;
661 
662 	if ((status_reg & PCI_STAT_PERROR) && perr_fatal)
663 		nerr++;
664 	if ((status_reg & PCI_STAT_S_SYSERR) && serr_fatal)
665 		nerr++;
666 	if (status_reg & PCI_STAT_R_MAST_AB)
667 		nerr++;
668 	if ((status_reg & PCI_STAT_S_PERROR) && perr_fatal)
669 		nerr++;
670 
671 	cmn_err(CE_WARN, "%s%d: %sPCI Express config space CSR=0x%b",
672 	    ddi_driver_name(dip), ddi_get_instance(dip), err_msg,
673 	    (uint32_t)status_reg, PX_STATUS_BITS);
674 
675 	return (nerr);
676 }
677