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8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / uts / i86pc / io / pci / pci.c
blob122906945d87369a54b9897244cd69d02c1092d2
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 * Copyright 2012 Garrett D'Amore <garrett@damore.org>. All rights reserved.
27 */
28
29 /*
30 * Host to PCI local bus driver
31 */
32
33 #include <sys/conf.h>
34 #include <sys/modctl.h>
35 #include <sys/pci.h>
36 #include <sys/pci_impl.h>
37 #include <sys/sysmacros.h>
38 #include <sys/sunndi.h>
39 #include <sys/ddifm.h>
40 #include <sys/ndifm.h>
41 #include <sys/fm/protocol.h>
42 #include <sys/hotplug/pci/pcihp.h>
43 #include <io/pci/pci_common.h>
44 #include <io/pci/pci_tools_ext.h>
45
46 /* Save minimal state. */
47 void *pci_statep;
48
49 /*
50 * Bus Operation functions
51 */
52 static int pci_bus_map(dev_info_t *, dev_info_t *, ddi_map_req_t *,
53 off_t, off_t, caddr_t *);
54 static int pci_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t,
55 void *, void *);
56 static int pci_intr_ops(dev_info_t *, dev_info_t *, ddi_intr_op_t,
57 ddi_intr_handle_impl_t *, void *);
58 static int pci_fm_init(dev_info_t *, dev_info_t *, int,
59 ddi_iblock_cookie_t *);
60 static int pci_fm_callback(dev_info_t *, ddi_fm_error_t *, const void *);
61
62 struct bus_ops pci_bus_ops = {
63 BUSO_REV,
64 pci_bus_map,
65 NULL,
66 NULL,
67 NULL,
68 i_ddi_map_fault,
69 NULL,
70 ddi_dma_allochdl,
71 ddi_dma_freehdl,
72 ddi_dma_bindhdl,
73 ddi_dma_unbindhdl,
74 ddi_dma_flush,
75 ddi_dma_win,
76 ddi_dma_mctl,
77 pci_ctlops,
78 ddi_bus_prop_op,
79 0, /* (*bus_get_eventcookie)(); */
80 0, /* (*bus_add_eventcall)(); */
81 0, /* (*bus_remove_eventcall)(); */
82 0, /* (*bus_post_event)(); */
83 0, /* (*bus_intr_ctl)(); */
84 0, /* (*bus_config)(); */
85 0, /* (*bus_unconfig)(); */
86 pci_fm_init, /* (*bus_fm_init)(); */
87 NULL, /* (*bus_fm_fini)(); */
88 NULL, /* (*bus_fm_access_enter)(); */
89 NULL, /* (*bus_fm_access_exit)(); */
90 NULL, /* (*bus_power)(); */
91 pci_intr_ops /* (*bus_intr_op)(); */
92 };
93
94 /*
95 * One goal here is to leverage off of the pcihp.c source without making
96 * changes to it. Call into it's cb_ops directly if needed, piggybacking
97 * anything else needed by the pci_tools.c module. Only pci_tools and pcihp
98 * will be opening PCI nexus driver file descriptors.
99 */
100 static int pci_open(dev_t *, int, int, cred_t *);
101 static int pci_close(dev_t, int, int, cred_t *);
102 static int pci_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
103 static int pci_prop_op(dev_t, dev_info_t *, ddi_prop_op_t, int, char *,
104 caddr_t, int *);
105 static int pci_info(dev_info_t *, ddi_info_cmd_t, void *, void **);
106 static void pci_peekpoke_cb(dev_info_t *, ddi_fm_error_t *);
107
108 struct cb_ops pci_cb_ops = {
109 pci_open, /* open */
110 pci_close, /* close */
111 nodev, /* strategy */
112 nodev, /* print */
113 nodev, /* dump */
114 nodev, /* read */
115 nodev, /* write */
116 pci_ioctl, /* ioctl */
117 nodev, /* devmap */
118 nodev, /* mmap */
119 nodev, /* segmap */
120 nochpoll, /* poll */
121 pci_prop_op, /* cb_prop_op */
122 NULL, /* streamtab */
123 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */
124 CB_REV, /* rev */
125 nodev, /* int (*cb_aread)() */
126 nodev /* int (*cb_awrite)() */
127 };
128
129 /*
130 * Device Node Operation functions
131 */
132 static int pci_attach(dev_info_t *devi, ddi_attach_cmd_t cmd);
133 static int pci_detach(dev_info_t *devi, ddi_detach_cmd_t cmd);
134
135 struct dev_ops pci_ops = {
136 DEVO_REV, /* devo_rev */
137 0, /* refcnt */
138 pci_info, /* info */
139 nulldev, /* identify */
140 nulldev, /* probe */
141 pci_attach, /* attach */
142 pci_detach, /* detach */
143 nulldev, /* reset */
144 &pci_cb_ops, /* driver operations */
145 &pci_bus_ops, /* bus operations */
146 NULL, /* power */
147 ddi_quiesce_not_needed /* quiesce */
148 };
149
150 /*
151 * This variable controls the default setting of the command register
152 * for pci devices. See pci_initchild() for details.
153 */
154 static ushort_t pci_command_default = PCI_COMM_ME |
155 PCI_COMM_MAE |
156 PCI_COMM_IO;
157
158 /*
159 * Internal routines in support of particular pci_ctlops.
160 */
161 static int pci_removechild(dev_info_t *child);
162 static int pci_initchild(dev_info_t *child);
163
164 /*
165 * Module linkage information for the kernel.
166 */
167
168 static struct modldrv modldrv = {
169 &mod_driverops, /* Type of module */
170 "x86 Host to PCI nexus driver", /* Name of module */
171 &pci_ops, /* driver ops */
172 };
173
174 static struct modlinkage modlinkage = {
175 MODREV_1,
176 (void *)&modldrv,
177 NULL
178 };
179
180 int
181 _init(void)
182 {
183 int e;
184
185 /*
186 * Initialize per-pci bus soft state pointer.
187 */
188 e = ddi_soft_state_init(&pci_statep, sizeof (pci_state_t), 1);
189 if (e != 0)
190 return (e);
191
192 if ((e = mod_install(&modlinkage)) != 0)
193 ddi_soft_state_fini(&pci_statep);
194
195 return (e);
196 }
197
198 int
199 _fini(void)
200 {
201 int rc;
202
203 rc = mod_remove(&modlinkage);
204 if (rc != 0)
205 return (rc);
206
207 ddi_soft_state_fini(&pci_statep);
208
209 return (rc);
210 }
211
212 int
213 _info(struct modinfo *modinfop)
214 {
215 return (mod_info(&modlinkage, modinfop));
216 }
217
218 /*ARGSUSED*/
219 static int
220 pci_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
221 {
222 /*
223 * Use the minor number as constructed by pcihp, as the index value to
224 * ddi_soft_state_zalloc.
225 */
226 int instance = ddi_get_instance(devi);
227 pci_state_t *pcip = NULL;
228 switch (cmd) {
229 case DDI_ATTACH:
230 break;
231
232 case DDI_RESUME:
233 return (DDI_SUCCESS);
234
235 default:
236 return (DDI_FAILURE);
237 }
238
239 if (ddi_prop_update_string(DDI_DEV_T_NONE, devi, "device_type", "pci")
240 != DDI_PROP_SUCCESS) {
241 cmn_err(CE_WARN, "pci: 'device_type' prop create failed");
242 }
243
244 if (ddi_soft_state_zalloc(pci_statep, instance) == DDI_SUCCESS) {
245 pcip = ddi_get_soft_state(pci_statep, instance);
246 }
247
248 if (pcip == NULL) {
249 goto bad_soft_state;
250 }
251
252 pcip->pci_dip = devi;
253 pcip->pci_soft_state = PCI_SOFT_STATE_CLOSED;
254
255 /*
256 * Initialize hotplug support on this bus. At minimum
257 * (for non hotplug bus) this would create ":devctl" minor
258 * node to support DEVCTL_DEVICE_* and DEVCTL_BUS_* ioctls
259 * to this bus.
260 */
261 if (pcihp_init(devi) != DDI_SUCCESS) {
262 cmn_err(CE_WARN, "pci: Failed to setup hotplug framework");
263 goto bad_pcihp_init;
264 }
265
266 /* Second arg: initialize for pci, not pci_express */
267 if (pcitool_init(devi, B_FALSE) != DDI_SUCCESS) {
268 goto bad_pcitool_init;
269 }
270
271 pcip->pci_fmcap = DDI_FM_ERRCB_CAPABLE |
272 DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE;
273 ddi_fm_init(devi, &pcip->pci_fmcap, &pcip->pci_fm_ibc);
274 mutex_init(&pcip->pci_mutex, NULL, MUTEX_DRIVER, NULL);
275 mutex_init(&pcip->pci_err_mutex, NULL, MUTEX_DRIVER,
276 (void *)pcip->pci_fm_ibc);
277 mutex_init(&pcip->pci_peek_poke_mutex, NULL, MUTEX_DRIVER,
278 (void *)pcip->pci_fm_ibc);
279 if (pcip->pci_fmcap & DDI_FM_ERRCB_CAPABLE) {
280 pci_ereport_setup(devi);
281 ddi_fm_handler_register(devi, pci_fm_callback, NULL);
282 }
283
284 ddi_report_dev(devi);
285
286 return (DDI_SUCCESS);
287
288 bad_pcitool_init:
289 (void) pcihp_uninit(devi);
290 bad_pcihp_init:
291 ddi_soft_state_free(pci_statep, instance);
292 bad_soft_state:
293 return (DDI_FAILURE);
294 }
295
296 /*ARGSUSED*/
297 static int
298 pci_detach(dev_info_t *devi, ddi_detach_cmd_t cmd)
299 {
300 int instance = ddi_get_instance(devi);
301 pci_state_t *pcip;
302
303 pcip = ddi_get_soft_state(pci_statep, ddi_get_instance(devi));
304
305
306 switch (cmd) {
307 case DDI_DETACH:
308 if (pcip->pci_fmcap & DDI_FM_ERRCB_CAPABLE) {
309 ddi_fm_handler_unregister(devi);
310 pci_ereport_teardown(devi);
311 }
312 mutex_destroy(&pcip->pci_peek_poke_mutex);
313 mutex_destroy(&pcip->pci_err_mutex);
314 mutex_destroy(&pcip->pci_mutex);
315 ddi_fm_fini(devi); /* Uninitialize pcitool support. */
316 pcitool_uninit(devi);
317
318 /* Uninitialize hotplug support on this bus. */
319 (void) pcihp_uninit(devi);
320
321 ddi_soft_state_free(pci_statep, instance);
322
323 return (DDI_SUCCESS);
324 case DDI_SUSPEND:
325 return (DDI_SUCCESS);
326 default:
327 return (DDI_FAILURE);
328 }
329 }
330
331 static int
332 pci_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
333 off_t offset, off_t len, caddr_t *vaddrp)
334 {
335 struct regspec reg;
336 ddi_map_req_t mr;
337 ddi_acc_hdl_t *hp;
338 ddi_acc_impl_t *hdlp;
339 pci_regspec_t pci_reg;
340 pci_regspec_t *pci_rp;
341 int rnumber;
342 int length;
343 pci_acc_cfblk_t *cfp;
344 int space;
345 pci_state_t *pcip;
346
347 mr = *mp; /* Get private copy of request */
348 mp = &mr;
349
350 if (mp->map_handlep != NULL) {
351 pcip = ddi_get_soft_state(pci_statep, ddi_get_instance(dip));
352 hdlp = (ddi_acc_impl_t *)(mp->map_handlep)->ah_platform_private;
353 hdlp->ahi_err_mutexp = &pcip->pci_err_mutex;
354 hdlp->ahi_peekpoke_mutexp = &pcip->pci_peek_poke_mutex;
355 hdlp->ahi_scan_dip = dip;
356 hdlp->ahi_scan = pci_peekpoke_cb;
357 }
358
359 /*
360 * check for register number
361 */
362 switch (mp->map_type) {
363 case DDI_MT_REGSPEC:
364 pci_reg = *(pci_regspec_t *)(mp->map_obj.rp);
365 pci_rp = &pci_reg;
366 if (pci_common_get_reg_prop(rdip, pci_rp) != DDI_SUCCESS)
367 return (DDI_FAILURE);
368 break;
369 case DDI_MT_RNUMBER:
370 rnumber = mp->map_obj.rnumber;
371 /*
372 * get ALL "reg" properties for dip, select the one of
373 * of interest. In x86, "assigned-addresses" property
374 * is identical to the "reg" property, so there is no
375 * need to cross check the two to determine the physical
376 * address of the registers.
377 * This routine still performs some validity checks to
378 * make sure that everything is okay.
379 */
380 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, rdip,
381 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp,
382 (uint_t *)&length) != DDI_PROP_SUCCESS)
383 return (DDI_FAILURE);
384
385 /*
386 * validate the register number.
387 */
388 length /= (sizeof (pci_regspec_t) / sizeof (int));
389 if (rnumber >= length) {
390 ddi_prop_free(pci_rp);
391 return (DDI_FAILURE);
392 }
393
394 /*
395 * copy the required entry.
396 */
397 pci_reg = pci_rp[rnumber];
398
399 /*
400 * free the memory allocated by ddi_prop_lookup_int_array
401 */
402 ddi_prop_free(pci_rp);
403
404 pci_rp = &pci_reg;
405 if (pci_common_get_reg_prop(rdip, pci_rp) != DDI_SUCCESS)
406 return (DDI_FAILURE);
407 mp->map_type = DDI_MT_REGSPEC;
408 break;
409 default:
410 return (DDI_ME_INVAL);
411 }
412
413 space = pci_rp->pci_phys_hi & PCI_REG_ADDR_M;
414
415 /*
416 * check for unmap and unlock of address space
417 */
418 if ((mp->map_op == DDI_MO_UNMAP) || (mp->map_op == DDI_MO_UNLOCK)) {
419 /*
420 * Adjust offset and length
421 * A non-zero length means override the one in the regspec.
422 */
423 pci_rp->pci_phys_low += (uint_t)offset;
424 if (len != 0)
425 pci_rp->pci_size_low = len;
426
427 switch (space) {
428 case PCI_ADDR_CONFIG:
429 /* No work required on unmap of Config space */
430 return (DDI_SUCCESS);
431
432 case PCI_ADDR_IO:
433 reg.regspec_bustype = 1;
434 break;
435
436 case PCI_ADDR_MEM64:
437 /*
438 * MEM64 requires special treatment on map, to check
439 * that the device is below 4G. On unmap, however,
440 * we can assume that everything is OK... the map
441 * must have succeeded.
442 */
443 /* FALLTHROUGH */
444 case PCI_ADDR_MEM32:
445 reg.regspec_bustype = 0;
446 break;
447
448 default:
449 return (DDI_FAILURE);
450 }
451 reg.regspec_addr = pci_rp->pci_phys_low;
452 reg.regspec_size = pci_rp->pci_size_low;
453
454 mp->map_obj.rp = &reg;
455 return (ddi_map(dip, mp, (off_t)0, (off_t)0, vaddrp));
456
457 }
458
459 /* check for user mapping request - not legal for Config */
460 if (mp->map_op == DDI_MO_MAP_HANDLE && space == PCI_ADDR_CONFIG) {
461 return (DDI_FAILURE);
462 }
463
464 /*
465 * check for config space
466 * On x86, CONFIG is not mapped via MMU and there is
467 * no endian-ness issues. Set the attr field in the handle to
468 * indicate that the common routines to call the nexus driver.
469 */
470 if (space == PCI_ADDR_CONFIG) {
471 /* Can't map config space without a handle */
472 hp = (ddi_acc_hdl_t *)mp->map_handlep;
473 if (hp == NULL)
474 return (DDI_FAILURE);
475
476 /* record the device address for future reference */
477 cfp = (pci_acc_cfblk_t *)&hp->ah_bus_private;
478 cfp->c_busnum = PCI_REG_BUS_G(pci_rp->pci_phys_hi);
479 cfp->c_devnum = PCI_REG_DEV_G(pci_rp->pci_phys_hi);
480 cfp->c_funcnum = PCI_REG_FUNC_G(pci_rp->pci_phys_hi);
481
482 *vaddrp = (caddr_t)offset;
483 return (pci_fm_acc_setup(hp, offset, len));
484 }
485
486 /*
487 * range check
488 */
489 if ((offset >= pci_rp->pci_size_low) ||
490 (len > pci_rp->pci_size_low) ||
491 (offset + len > pci_rp->pci_size_low)) {
492 return (DDI_FAILURE);
493 }
494
495 /*
496 * Adjust offset and length
497 * A non-zero length means override the one in the regspec.
498 */
499 pci_rp->pci_phys_low += (uint_t)offset;
500 if (len != 0)
501 pci_rp->pci_size_low = len;
502
503 /*
504 * convert the pci regsec into the generic regspec used by the
505 * parent root nexus driver.
506 */
507 switch (space) {
508 case PCI_ADDR_IO:
509 reg.regspec_bustype = 1;
510 break;
511 case PCI_ADDR_MEM64:
512 /*
513 * We can't handle 64-bit devices that are mapped above
514 * 4G or that are larger than 4G.
515 */
516 if (pci_rp->pci_phys_mid != 0 ||
517 pci_rp->pci_size_hi != 0)
518 return (DDI_FAILURE);
519 /*
520 * Other than that, we can treat them as 32-bit mappings
521 */
522 /* FALLTHROUGH */
523 case PCI_ADDR_MEM32:
524 reg.regspec_bustype = 0;
525 break;
526 default:
527 return (DDI_FAILURE);
528 }
529 reg.regspec_addr = pci_rp->pci_phys_low;
530 reg.regspec_size = pci_rp->pci_size_low;
531
532 mp->map_obj.rp = &reg;
533 return (ddi_map(dip, mp, (off_t)0, (off_t)0, vaddrp));
534 }
535
536
537 /*ARGSUSED*/
538 static int
539 pci_ctlops(dev_info_t *dip, dev_info_t *rdip,
540 ddi_ctl_enum_t ctlop, void *arg, void *result)
541 {
542 pci_regspec_t *drv_regp;
543 uint_t reglen;
544 int rn;
545 int totreg;
546 pci_state_t *pcip;
547 struct attachspec *asp;
548 struct detachspec *dsp;
549
550 switch (ctlop) {
551 case DDI_CTLOPS_REPORTDEV:
552 if (rdip == (dev_info_t *)0)
553 return (DDI_FAILURE);
554 cmn_err(CE_CONT, "?PCI-device: %s@%s, %s%d\n",
555 ddi_node_name(rdip), ddi_get_name_addr(rdip),
556 ddi_driver_name(rdip),
557 ddi_get_instance(rdip));
558 return (DDI_SUCCESS);
559
560 case DDI_CTLOPS_INITCHILD:
561 return (pci_initchild((dev_info_t *)arg));
562
563 case DDI_CTLOPS_UNINITCHILD:
564 return (pci_removechild((dev_info_t *)arg));
565
566 case DDI_CTLOPS_SIDDEV:
567 return (DDI_SUCCESS);
568
569 case DDI_CTLOPS_REGSIZE:
570 case DDI_CTLOPS_NREGS:
571 if (rdip == (dev_info_t *)0)
572 return (DDI_FAILURE);
573
574 *(int *)result = 0;
575 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, rdip,
576 DDI_PROP_DONTPASS, "reg", (int **)&drv_regp,
577 &reglen) != DDI_PROP_SUCCESS) {
578 return (DDI_FAILURE);
579 }
580
581 totreg = (reglen * sizeof (int)) / sizeof (pci_regspec_t);
582 if (ctlop == DDI_CTLOPS_NREGS)
583 *(int *)result = totreg;
584 else if (ctlop == DDI_CTLOPS_REGSIZE) {
585 rn = *(int *)arg;
586 if (rn >= totreg) {
587 ddi_prop_free(drv_regp);
588 return (DDI_FAILURE);
589 }
590 *(off_t *)result = drv_regp[rn].pci_size_low;
591 }
592 ddi_prop_free(drv_regp);
593
594 return (DDI_SUCCESS);
595
596 case DDI_CTLOPS_POWER: {
597 power_req_t *reqp = (power_req_t *)arg;
598 /*
599 * We currently understand reporting of PCI_PM_IDLESPEED
600 * capability. Everything else is passed up.
601 */
602 if ((reqp->request_type == PMR_REPORT_PMCAP) &&
603 (reqp->req.report_pmcap_req.cap == PCI_PM_IDLESPEED)) {
604
605 return (DDI_SUCCESS);
606 }
607 return (ddi_ctlops(dip, rdip, ctlop, arg, result));
608 }
609
610 case DDI_CTLOPS_PEEK:
611 case DDI_CTLOPS_POKE:
612 pcip = ddi_get_soft_state(pci_statep, ddi_get_instance(dip));
613 return (pci_peekpoke_check(dip, rdip, ctlop, arg, result,
614 pci_common_peekpoke, &pcip->pci_err_mutex,
615 &pcip->pci_peek_poke_mutex, pci_peekpoke_cb));
616
617 /* for now only X86 systems support PME wakeup from suspended state */
618 case DDI_CTLOPS_ATTACH:
619 asp = (struct attachspec *)arg;
620 if (asp->cmd == DDI_RESUME && asp->when == DDI_PRE)
621 if (pci_pre_resume(rdip) != DDI_SUCCESS)
622 return (DDI_FAILURE);
623 return (ddi_ctlops(dip, rdip, ctlop, arg, result));
624
625 case DDI_CTLOPS_DETACH:
626 dsp = (struct detachspec *)arg;
627 if (dsp->cmd == DDI_SUSPEND && dsp->when == DDI_POST)
628 if (pci_post_suspend(rdip) != DDI_SUCCESS)
629 return (DDI_FAILURE);
630 return (ddi_ctlops(dip, rdip, ctlop, arg, result));
631
632 default:
633 return (ddi_ctlops(dip, rdip, ctlop, arg, result));
634 }
635
636 /* NOTREACHED */
637
638 }
639
640 /*
641 * pci_intr_ops
642 */
643 static int
644 pci_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op,
645 ddi_intr_handle_impl_t *hdlp, void *result)
646 {
647 return (pci_common_intr_ops(pdip, rdip, intr_op, hdlp, result));
648 }
649
650
651 static int
652 pci_initchild(dev_info_t *child)
653 {
654 char name[80];
655 ddi_acc_handle_t config_handle;
656 ushort_t command_preserve, command;
657
658 if (pci_common_name_child(child, name, 80) != DDI_SUCCESS) {
659 return (DDI_FAILURE);
660 }
661 ddi_set_name_addr(child, name);
662
663 /*
664 * Pseudo nodes indicate a prototype node with per-instance
665 * properties to be merged into the real h/w device node.
666 * The interpretation of the unit-address is DD[,F]
667 * where DD is the device id and F is the function.
668 */
669 if (ndi_dev_is_persistent_node(child) == 0) {
670 extern int pci_allow_pseudo_children;
671
672 ddi_set_parent_data(child, NULL);
673
674 /*
675 * Try to merge the properties from this prototype
676 * node into real h/w nodes.
677 */
678 if (ndi_merge_node(child, pci_common_name_child) ==
679 DDI_SUCCESS) {
680 /*
681 * Merged ok - return failure to remove the node.
682 */
683 ddi_set_name_addr(child, NULL);
684 return (DDI_FAILURE);
685 }
686
687 /* workaround for ddivs to run under PCI */
688 if (pci_allow_pseudo_children) {
689 /*
690 * If the "interrupts" property doesn't exist,
691 * this must be the ddivs no-intr case, and it returns
692 * DDI_SUCCESS instead of DDI_FAILURE.
693 */
694 if (ddi_prop_get_int(DDI_DEV_T_ANY, child,
695 DDI_PROP_DONTPASS, "interrupts", -1) == -1)
696 return (DDI_SUCCESS);
697 /*
698 * Create the ddi_parent_private_data for a pseudo
699 * child.
700 */
701 pci_common_set_parent_private_data(child);
702 return (DDI_SUCCESS);
703 }
704
705 /*
706 * The child was not merged into a h/w node,
707 * but there's not much we can do with it other
708 * than return failure to cause the node to be removed.
709 */
710 cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged",
711 ddi_get_name(child), ddi_get_name_addr(child),
712 ddi_get_name(child));
713 ddi_set_name_addr(child, NULL);
714 return (DDI_NOT_WELL_FORMED);
715 }
716
717 if (ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
718 "interrupts", -1) != -1)
719 pci_common_set_parent_private_data(child);
720 else
721 ddi_set_parent_data(child, NULL);
722
723 /*
724 * initialize command register
725 */
726 if (pci_config_setup(child, &config_handle) != DDI_SUCCESS)
727 return (DDI_FAILURE);
728
729 /*
730 * Support for the "command-preserve" property.
731 */
732 command_preserve = ddi_prop_get_int(DDI_DEV_T_ANY, child,
733 DDI_PROP_DONTPASS, "command-preserve", 0);
734 command = pci_config_get16(config_handle, PCI_CONF_COMM);
735 command &= (command_preserve | PCI_COMM_BACK2BACK_ENAB);
736 command |= (pci_command_default & ~command_preserve);
737 pci_config_put16(config_handle, PCI_CONF_COMM, command);
738
739 pci_config_teardown(&config_handle);
740 return (DDI_SUCCESS);
741 }
742
743 static int
744 pci_removechild(dev_info_t *dip)
745 {
746 struct ddi_parent_private_data *pdptr;
747
748 if ((pdptr = ddi_get_parent_data(dip)) != NULL) {
749 kmem_free(pdptr, (sizeof (*pdptr) + sizeof (struct intrspec)));
750 ddi_set_parent_data(dip, NULL);
751 }
752 ddi_set_name_addr(dip, NULL);
753
754 /*
755 * Strip the node to properly convert it back to prototype form
756 */
757 ddi_remove_minor_node(dip, NULL);
758
759 impl_rem_dev_props(dip);
760
761 return (DDI_SUCCESS);
762 }
763
764
765 /*
766 * When retrofitting this module for pci_tools, functions such as open, close,
767 * and ioctl are now pulled into this module. Before this, the functions in
768 * the pcihp module were referenced directly. Now they are called or
769 * referenced through the pcihp cb_ops structure from functions in this module.
770 */
771
772 static int
773 pci_open(dev_t *devp, int flags, int otyp, cred_t *credp)
774 {
775 return ((pcihp_get_cb_ops())->cb_open(devp, flags, otyp, credp));
776 }
777
778 static int
779 pci_close(dev_t dev, int flags, int otyp, cred_t *credp)
780 {
781 return ((pcihp_get_cb_ops())->cb_close(dev, flags, otyp, credp));
782 }
783
784 static int
785 pci_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp)
786 {
787 minor_t minor = getminor(dev);
788 int instance = PCI_MINOR_NUM_TO_INSTANCE(minor);
789 pci_state_t *pci_p = ddi_get_soft_state(pci_statep, instance);
790 int ret = ENOTTY;
791
792 if (pci_p == NULL)
793 return (ENXIO);
794
795 switch (PCI_MINOR_NUM_TO_PCI_DEVNUM(minor)) {
796 case PCI_TOOL_REG_MINOR_NUM:
797 case PCI_TOOL_INTR_MINOR_NUM:
798 /* To handle pcitool related ioctls */
799 ret = pci_common_ioctl(pci_p->pci_dip, dev, cmd, arg, mode,
800 credp, rvalp);
801 break;
802 default:
803 /* To handle devctl and hotplug related ioctls */
804 ret = (pcihp_get_cb_ops())->cb_ioctl(dev, cmd, arg, mode,
805 credp, rvalp);
806 break;
807 }
808
809 return (ret);
810 }
811
812
813 static int
814 pci_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op,
815 int flags, char *name, caddr_t valuep, int *lengthp)
816 {
817 return ((pcihp_get_cb_ops())->cb_prop_op(dev, dip, prop_op, flags,
818 name, valuep, lengthp));
819 }
820
821 static int
822 pci_info(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result)
823 {
824 return (pcihp_info(dip, cmd, arg, result));
825 }
826
827 void pci_peekpoke_cb(dev_info_t *dip, ddi_fm_error_t *derr) {
828 (void) pci_ereport_post(dip, derr, NULL);
829 }
830
831 /*ARGSUSED*/
832 static int
833 pci_fm_init(dev_info_t *dip, dev_info_t *tdip, int cap,
834 ddi_iblock_cookie_t *ibc)
835 {
836 pci_state_t *pcip = ddi_get_soft_state(pci_statep,
837 ddi_get_instance(dip));
838
839 ASSERT(ibc != NULL);
840 *ibc = pcip->pci_fm_ibc;
841
842 return (pcip->pci_fmcap);
843 }
844
845 /*ARGSUSED*/
846 static int
847 pci_fm_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *no_used)
848 {
849 pci_state_t *pcip = ddi_get_soft_state(pci_statep,
850 ddi_get_instance(dip));
851
852 mutex_enter(&pcip->pci_err_mutex);
853 pci_ereport_post(dip, derr, NULL);
854 mutex_exit(&pcip->pci_err_mutex);
855 return (derr->fme_status);
856 }
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