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8354 sync regcomp(3C) with upstream (fix make catalog)
[unleashed/tickless.git] / usr / src / uts / sun4u / io / sbbc.c
blob615ea8549eb0e69195bd79ddbe75f8d9f0c89a4f
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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26
27 /*
28 * Starcat PCI SBBC Nexus Driver.
29 *
30 * This source code's compiled binary runs on both a Starcat System
31 * Controller (SSC) and a Starcat Domain. One of the SBBC hardware
32 * registers is read during attach(9e) in order to determine which
33 * environment the driver is executing on.
34 *
35 * On both the SSC and the Domain, this driver provides nexus driver
36 * services to its Device Tree children. Note that the children in
37 * each environment are not necessarily the same.
38 *
39 * This driver allows one concurrent open(2) of its associated device
40 * (/dev/sbbc0). The client uses the file descriptor to issue
41 * ioctl(2)'s in order to read and write from the 2MB (PCI) space
42 * reserved for "SBBC Internal Registers". Among other things,
43 * these registers consist of command/control/status registers for
44 * devices such as Console Bus, I2C, EPLD, IOSRAM, and JTAG. The 2MB
45 * space is very sparse; EINVAL is returned if a reserved or unaligned
46 * address is specified in the ioctl(2).
47 *
48 * Note that the 2MB region reserved for SBBC Internal Registers is
49 * a subset of the 128MB of PCI address space addressable by the SBBC
50 * ASIC. Address space outside of the 2MB (such as the 64MB reserved
51 * for the Console Bus) is not accessible via this driver.
52 *
53 * Also, note that the SBBC Internal Registers are only read and
54 * written by the SSC; no process on the Domain accesses these
55 * registers. As a result, the registers are unmapped (when running
56 * on the Domain) near the end of attach(9e) processing. This conserves
57 * kernel virtual address space resources (as one instance of the driver
58 * is created for each Domain-side IO assembly). (To be complete, only
59 * one instance of the driver is created on the SSC).
60 */
61
62 #include <sys/types.h>
63
64 #include <sys/conf.h> /* req. by dev_ops flags MTSAFE etc. */
65 #include <sys/ddi.h>
66 #include <sys/sunddi.h>
67 #include <sys/ddi_impldefs.h>
68 #include <sys/ddi_subrdefs.h>
69 #include <sys/pci.h>
70 #include <sys/pci/pci_nexus.h>
71 #include <sys/autoconf.h>
72 #include <sys/cmn_err.h>
73 #include <sys/param.h>
74 #include <sys/errno.h>
75 #include <sys/kmem.h>
76 #include <sys/debug.h>
77 #include <sys/sysmacros.h>
78 #include <sys/machsystm.h>
79 #include <sys/modctl.h>
80 #include <sys/stat.h>
81
82
83 #include <sys/sbbcreg.h> /* hw description */
84 #include <sys/sbbcvar.h> /* driver description */
85 #include <sys/sbbcio.h> /* ioctl description */
86
87 #define getprop(dip, name, addr, intp) \
88 ddi_getlongprop(DDI_DEV_T_ANY, (dip), DDI_PROP_DONTPASS, \
89 (name), (caddr_t)(addr), (intp))
90
91 /* driver entry point fn definitions */
92 static int sbbc_open(dev_t *, int, int, cred_t *);
93 static int sbbc_close(dev_t, int, int, cred_t *);
94 static int sbbc_ioctl(dev_t, int, intptr_t, int, cred_t *, int *);
95
96 /* configuration entry point fn definitions */
97 static int sbbc_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
98 static int sbbc_attach(dev_info_t *, ddi_attach_cmd_t);
99 static int sbbc_detach(dev_info_t *, ddi_detach_cmd_t);
100
101 /* local utility routines */
102 /*
103 * NOTE - sbbc_offset_valid contains detailed address information taken from
104 * the Serengeti Architecture Programmer's Reference Manual. If any
105 * changes are made to the SBBC registers, this routine may need to be
106 * updated.
107 */
108 static int sbbc_offset_valid(uint32_t offset);
109
110 /*
111 * function prototypes for bus ops routines:
112 */
113 static int sbbc_busmap(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
114 off_t offset, off_t len, caddr_t *addrp);
115 static int sbbc_ctlops(dev_info_t *dip, dev_info_t *rdip,
116 ddi_ctl_enum_t op, void *arg, void *result);
117
118 static int sbbc_intr_ops(dev_info_t *dip, dev_info_t *rdip,
119 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result);
120 static int sbbc_add_intr_impl(dev_info_t *dip, dev_info_t *rdip,
121 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result);
122 static int sbbc_remove_intr_impl(dev_info_t *dip, dev_info_t *rdip,
123 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result);
124 static int sbbc_update_intr_state(dev_info_t *dip, dev_info_t *rdip,
125 ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result);
126
127 static int sbbc_apply_range(struct sbbcsoft *sbbc_p, dev_info_t *rdip,
128 sbbc_child_regspec_t *child_rp, pci_regspec_t *rp);
129
130 static int sbbc_init(struct sbbcsoft *);
131
132 static uint_t sbbc_intr_wrapper(caddr_t arg);
133
134 static int sbbc_get_ranges(struct sbbcsoft *);
135 static int sbbc_config4pci(struct sbbcsoft *);
136 static int sbbc_initchild(dev_info_t *, dev_info_t *, dev_info_t *);
137 static int sbbc_uninitchild(dev_info_t *, dev_info_t *);
138 static void sbbc_remove_reg_maps(struct sbbcsoft *);
139
140 /* debugging functions */
141 #ifdef DEBUG
142 uint32_t sbbc_dbg_flags = 0x0;
143 static void sbbc_dbg(uint32_t flag, dev_info_t *dip, char *fmt,
144 uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5);
145 static void sbbc_dump_devid(dev_info_t *, struct sbbcsoft *, int instance);
146 #endif
147
148 /*
149 * For tracing, allocate space for the trace buffer
150 */
151 #if defined(SBBC_TRACE)
152 struct sbbctrace sbbctrace_buffer[NSBBCTRACE+1];
153 struct sbbctrace *sbbctrace_ptr;
154 int sbbctrace_count;
155 #endif
156
157 /*
158 * Local declarations and variables
159 */
160
161 static void *sbbcsoft_statep;
162
163 /* Determines whether driver is executing on System Controller or Domain */
164 int sbbc_scmode = FALSE;
165
166 /*
167 * ops stuff.
168 */
169 static struct bus_ops sbbc_bus_ops = {
170 BUSO_REV,
171 sbbc_busmap,
172 0,
173 0,
174 0,
175 NULL, /* (*bus_map_fault)() */
176 ddi_no_dma_map,
177 ddi_no_dma_allochdl,
178 ddi_no_dma_freehdl, /* (*bus_dma_freehdl)() */
179 ddi_no_dma_bindhdl, /* (*bus_dma_bindhdl)() */
180 ddi_no_dma_unbindhdl, /* (*bus_dma_unbindhdl)() */
181 ddi_no_dma_flush, /* (*bus_dma_flush)() */
182 ddi_no_dma_win, /* (*bus_dma_win)() */
183 ddi_no_dma_mctl, /* (*bus_dma_ctl)() */
184 sbbc_ctlops,
185 ddi_bus_prop_op,
186 0, /* (*bus_get_eventcookie)(); */
187 0, /* (*bus_add_eventcall)(); */
188 0, /* (*bus_remove_eventcall)(); */
189 0, /* (*bus_post_event)(); */
190 0, /* (*bus_intr_ctl)(); */
191 0, /* (*bus_config)(); */
192 0, /* (*bus_unconfig)(); */
193 0, /* (*bus_fm_init)(); */
194 0, /* (*bus_fm_fini)(); */
195 0, /* (*bus_fm_access_enter)(); */
196 0, /* (*bus_fm_access_exit)(); */
197 0, /* (*bus_power)(); */
198 sbbc_intr_ops /* (*bus_intr_op)(); */
199 };
200
201 /*
202 * cb_ops
203 */
204 static struct cb_ops sbbc_cb_ops = {
205 sbbc_open, /* cb_open */
206 sbbc_close, /* cb_close */
207 nodev, /* cb_strategy */
208 nodev, /* cb_print */
209 nodev, /* cb_dump */
210 nodev, /* cb_read */
211 nodev, /* cb_write */
212 sbbc_ioctl, /* cb_ioctl */
213 nodev, /* cb_devmap */
214 nodev, /* cb_mmap */
215 nodev, /* cb_segmap */
216 nochpoll, /* cb_chpoll */
217 ddi_prop_op, /* cb_prop_op */
218 NULL, /* cb_stream */
219 (int)(D_NEW | D_MP) /* cb_flag */
220 };
221
222 /*
223 * Declare ops vectors for auto configuration.
224 */
225 struct dev_ops sbbc_ops = {
226 DEVO_REV, /* devo_rev */
227 0, /* devo_refcnt */
228 sbbc_getinfo, /* devo_getinfo */
229 nulldev, /* devo_identify */
230 nulldev, /* devo_probe */
231 sbbc_attach, /* devo_attach */
232 sbbc_detach, /* devo_detach */
233 nodev, /* devo_reset */
234 &sbbc_cb_ops, /* devo_cb_ops */
235 &sbbc_bus_ops, /* devo_bus_ops */
236 nulldev, /* devo_power */
237 ddi_quiesce_not_supported, /* devo_quiesce */
238 };
239
240 /*
241 * Loadable module support.
242 */
243 extern struct mod_ops mod_driverops;
244
245 static struct modldrv sbbcmodldrv = {
246 &mod_driverops, /* type of module - driver */
247 "PCI Sbbc Nexus Driver",
248 &sbbc_ops,
249 };
250
251 static struct modlinkage sbbcmodlinkage = {
252 MODREV_1,
253 &sbbcmodldrv,
254 NULL
255 };
256
257 int
258 _init(void)
259 {
260 int error;
261
262 if ((error = ddi_soft_state_init(&sbbcsoft_statep,
263 sizeof (struct sbbcsoft), 1)) != 0)
264 return (error);
265 if ((error = mod_install(&sbbcmodlinkage)) != 0)
266 ddi_soft_state_fini(&sbbcsoft_statep);
267
268 return (error);
269 }
270
271 int
272 _fini(void)
273 {
274 int error;
275
276 if ((error = mod_remove(&sbbcmodlinkage)) == 0)
277 ddi_soft_state_fini(&sbbcsoft_statep);
278
279 return (error);
280 }
281
282 int
283 _info(struct modinfo *modinfop)
284 {
285 return (mod_info(&sbbcmodlinkage, modinfop));
286 }
287
288 static int
289 sbbc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
290 {
291 int instance;
292 char name[32];
293 struct sbbcsoft *sbbcsoftp;
294 struct ddi_device_acc_attr attr;
295 uint32_t sbbc_id_reg;
296
297 attr.devacc_attr_version = DDI_DEVICE_ATTR_V0;
298 attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC;
299 attr.devacc_attr_endian_flags = DDI_NEVERSWAP_ACC;
300
301 /* initialize tracing */
302 SBBCTRACEINIT();
303
304 SBBC_DBG0(SBBC_DBG_ATTACH, dip, "Attaching\n");
305
306 instance = ddi_get_instance(dip);
307 switch (cmd) {
308 case DDI_ATTACH:
309 break;
310 case DDI_RESUME:
311 if (!(sbbcsoftp =
312 ddi_get_soft_state(sbbcsoft_statep, instance))) {
313 cmn_err(CE_WARN, "sbbc_attach:resume: unable "
314 "to acquire sbbcsoftp for instance %d",
315 instance);
316 return (DDI_FAILURE);
317 }
318 mutex_enter(&sbbcsoftp->umutex);
319 if (!sbbcsoftp->suspended) {
320 mutex_exit(&sbbcsoftp->umutex);
321 return (DDI_FAILURE);
322 }
323 sbbcsoftp->suspended = 0;
324 mutex_exit(&sbbcsoftp->umutex);
325 return (DDI_SUCCESS);
326
327 default:
328 return (DDI_FAILURE);
329 }
330
331 if (ddi_soft_state_zalloc(sbbcsoft_statep, instance) != 0) {
332 cmn_err(CE_WARN, "sbbc_attach: Unable to allocate statep "
333 "for instance %d", instance);
334 return (DDI_FAILURE);
335 }
336
337 sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance);
338
339 if (sbbcsoftp == NULL) {
340 cmn_err(CE_WARN, "sbbc_attach: Unable to acquire "
341 "sbbcsoftp for instance %d", instance);
342 ddi_soft_state_free(sbbcsoft_statep, instance);
343 return (DDI_FAILURE);
344 }
345
346 sbbcsoftp->instance = instance;
347 sbbcsoftp->dip = dip;
348 sbbcsoftp->oflag = FALSE;
349
350 /*
351 * Read our ranges property from OBP to map children space.
352 * And setup the internal structure for a later use when
353 * a child gets initialized.
354 */
355 if (sbbc_get_ranges(sbbcsoftp)) {
356 cmn_err(CE_WARN, "sbbc_attach: Unable to read sbbc "
357 "ranges from OBP %d", instance);
358 ddi_soft_state_free(sbbcsoft_statep, instance);
359 return (DDI_FAILURE);
360 }
361
362 if (sbbc_config4pci(sbbcsoftp)) {
363 cmn_err(CE_WARN, "sbbc_attach: Unable to configure "
364 "sbbc on PCI %d", instance);
365 kmem_free(sbbcsoftp->rangep, sbbcsoftp->range_len);
366 ddi_soft_state_free(sbbcsoft_statep, instance);
367 return (DDI_FAILURE);
368 }
369
370 mutex_init(&sbbcsoftp->umutex, NULL, MUTEX_DRIVER, (void *)NULL);
371 mutex_init(&sbbcsoftp->sbbc_intr_mutex, NULL,
372 MUTEX_DRIVER, (void *)NULL);
373
374 /* Map SBBC's Internal Registers */
375 if (ddi_regs_map_setup(dip, 1, (caddr_t *)&sbbcsoftp->pci_sbbc_map,
376 offsetof(struct pci_sbbc, sbbc_internal_regs),
377 sizeof (struct sbbc_regs_map), &attr,
378 &sbbcsoftp->pci_sbbc_map_handle) != DDI_SUCCESS) {
379 cmn_err(CE_WARN, "(%d):sbbc_attach failed to map sbbc_reg",
380 instance);
381 goto failed;
382 }
383
384 SBBC_DBG1(SBBC_DBG_ATTACH, dip, "Mapped sbbc at %lx\n",
385 sbbcsoftp->pci_sbbc_map);
386 #ifdef DEBUG
387 sbbc_dump_devid(dip, sbbcsoftp, instance);
388 #endif
389 /*
390 * Read a hardware register to determine if we are executing on
391 * a Starcat System Controller or a Starcat Domain.
392 */
393 sbbc_id_reg = ddi_get32(sbbcsoftp->pci_sbbc_map_handle,
394 &sbbcsoftp->pci_sbbc_map->device_conf);
395
396 if (sbbc_id_reg & SBBC_SC_MODE) {
397 sbbc_scmode = TRUE;
398 SBBC_DBG1(SBBC_DBG_ATTACH, dip, "SBBC(%d) nexus running "
399 "in System Controller Mode.\n", instance);
400
401 /* initialize SBBC ASIC */
402 if (!sbbc_init(sbbcsoftp)) {
403 goto failed;
404 }
405 } else {
406 sbbc_scmode = FALSE;
407 SBBC_DBG1(SBBC_DBG_ATTACH, dip, "SBBC(%d) nexus "
408 "running in Domain Mode.\n", instance);
409
410 /* initialize SBBC ASIC before we unmap registers */
411 if (!sbbc_init(sbbcsoftp)) {
412 goto failed;
413 }
414
415 /*
416 * Access to SBBC registers is no longer needed. Unmap
417 * the registers to conserve kernel virtual address space.
418 */
419 SBBC_DBG1(SBBC_DBG_ATTACH, dip, "SBBC(%d): unmap "
420 "SBBC registers\n", instance);
421 sbbc_remove_reg_maps(sbbcsoftp);
422 sbbcsoftp->pci_sbbc_map = NULL;
423 }
424
425 (void) sprintf(name, "sbbc%d", instance);
426
427 if (ddi_create_minor_node(dip, name, S_IFCHR, instance, NULL,
428 NULL) == DDI_FAILURE) {
429 ddi_remove_minor_node(dip, NULL);
430 goto failed;
431 }
432
433 ddi_report_dev(dip);
434
435 SBBC_DBG0(SBBC_DBG_ATTACH, dip, "Attached successfully\n");
436
437 return (DDI_SUCCESS);
438
439 failed:
440 mutex_destroy(&sbbcsoftp->sbbc_intr_mutex);
441 mutex_destroy(&sbbcsoftp->umutex);
442
443 sbbc_remove_reg_maps(sbbcsoftp);
444 kmem_free(sbbcsoftp->rangep, sbbcsoftp->range_len);
445 ddi_soft_state_free(sbbcsoft_statep, instance);
446
447 SBBC_DBG0(SBBC_DBG_ATTACH, dip, "Attach failed\n");
448
449 return (DDI_FAILURE);
450 }
451
452 static int
453 sbbc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
454 {
455 int instance;
456 struct sbbcsoft *sbbcsoftp;
457
458 SBBCTRACE(sbbc_detach, 'DETA', dip);
459
460 instance = ddi_get_instance(dip);
461
462 switch (cmd) {
463 case DDI_DETACH:
464 break;
465
466 case DDI_SUSPEND:
467 if (!(sbbcsoftp =
468 ddi_get_soft_state(sbbcsoft_statep, instance))) {
469 cmn_err(CE_WARN,
470 "sbbc_detach: unable to get softstate %p",
471 (void *)sbbcsoftp);
472 return (DDI_FAILURE);
473 }
474 mutex_enter(&sbbcsoftp->umutex);
475 if (sbbcsoftp->suspended) {
476 mutex_exit(&sbbcsoftp->umutex);
477 return (DDI_FAILURE);
478 }
479 sbbcsoftp->suspended = 1;
480 mutex_exit(&sbbcsoftp->umutex);
481 return (DDI_SUCCESS);
482
483 default:
484 return (DDI_FAILURE);
485 }
486
487 if (!(sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance))) {
488 cmn_err(CE_WARN, "sbbc_detach: unable to get softstate %p",
489 (void *)sbbcsoftp);
490 return (DDI_FAILURE);
491 }
492
493 ddi_remove_minor_node(dip, NULL);
494
495 mutex_destroy(&sbbcsoftp->sbbc_intr_mutex);
496 mutex_destroy(&sbbcsoftp->umutex);
497
498 sbbc_remove_reg_maps(sbbcsoftp);
499 kmem_free(sbbcsoftp->rangep, sbbcsoftp->range_len);
500
501 ddi_soft_state_free(sbbcsoft_statep, instance);
502
503 return (DDI_SUCCESS);
504
505 }
506
507
508 /*
509 * Translate child's address into parents.
510 */
511 static int
512 sbbc_busmap(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
513 off_t off, off_t len, caddr_t *addrp)
514 {
515 struct sbbcsoft *sbbcsoftp;
516 sbbc_child_regspec_t *child_rp, *child_regs;
517 pci_regspec_t pci_reg;
518 ddi_map_req_t p_map_request;
519 int rnumber, i, n;
520 int rval = DDI_SUCCESS;
521 int instance;
522
523 SBBC_DBG4(SBBC_DBG_BUSMAP, dip,
524 "mapping child %s, type %llx, off %llx, len %llx\n",
525 ddi_driver_name(rdip), mp->map_type, off, len);
526
527 SBBCTRACE(sbbc_busmap, 'BMAP', mp);
528
529 /*
530 * Handle the mapping according to its type.
531 */
532 instance = ddi_get_instance(dip);
533 if (!(sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance)))
534 return (DDI_FAILURE);
535
536 switch (mp->map_type) {
537 case DDI_MT_REGSPEC:
538
539 /*
540 * We assume the register specification is in sbbc format.
541 * We must convert it into a PCI format regspec and pass
542 * the request to our parent.
543 */
544 child_rp = (sbbc_child_regspec_t *)mp->map_obj.rp;
545 break;
546
547 case DDI_MT_RNUMBER:
548
549 /*
550 * map_type 0
551 * Get the "reg" property from the device node and convert
552 * it to our parent's format.
553 */
554 rnumber = mp->map_obj.rnumber;
555
556 /* get the requester's reg property */
557 if (ddi_getlongprop(DDI_DEV_T_ANY, rdip, DDI_PROP_DONTPASS,
558 "reg", (caddr_t)&child_regs, &i) != DDI_SUCCESS) {
559 cmn_err(CE_WARN,
560 "SBBC: couldn't get %s ranges property %d",
561 ddi_get_name(sbbcsoftp->dip), instance);
562 return (DDI_ME_RNUMBER_RANGE);
563 }
564 n = i / sizeof (sbbc_child_regspec_t);
565
566 if (rnumber < 0 || rnumber >= n) {
567 kmem_free(child_regs, i);
568 return (DDI_ME_RNUMBER_RANGE);
569 }
570 child_rp = &child_regs[rnumber];
571 break;
572
573 default:
574 return (DDI_ME_INVAL);
575
576 }
577
578 /* Adjust our reg property with offset and length */
579 child_rp->addr_low += off;
580
581 if (len)
582 child_rp->size = len;
583
584 /*
585 * Combine this reg prop. into our parents PCI address using the ranges
586 * property.
587 */
588 rval = sbbc_apply_range(sbbcsoftp, rdip, child_rp, &pci_reg);
589
590 if (mp->map_type == DDI_MT_RNUMBER)
591 kmem_free(child_regs, i);
592
593 if (rval != DDI_SUCCESS)
594 return (rval);
595
596 p_map_request = *mp;
597 p_map_request.map_type = DDI_MT_REGSPEC;
598 p_map_request.map_obj.rp = (struct regspec *)&pci_reg;
599
600 /* Send it to PCI nexus to map into the PCI space */
601 rval = ddi_map(dip, &p_map_request, 0, 0, addrp);
602
603 return (rval);
604
605 }
606
607
608 /* new intr_ops structure */
609 static int
610 sbbc_intr_ops(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op,
611 ddi_intr_handle_impl_t *hdlp, void *result)
612 {
613 int ret = DDI_SUCCESS;
614
615 switch (intr_op) {
616 case DDI_INTROP_GETCAP:
617 *(int *)result = DDI_INTR_FLAG_LEVEL;
618 break;
619 case DDI_INTROP_ALLOC:
620 *(int *)result = hdlp->ih_scratch1;
621 break;
622 case DDI_INTROP_FREE:
623 break;
624 case DDI_INTROP_GETPRI:
625 if (hdlp->ih_pri == 0) {
626 hdlp->ih_pri = 0x1;
627
628 cmn_err(CE_WARN, "%s%d assigning default interrupt "
629 "level %d for device %s%d", ddi_driver_name(dip),
630 ddi_get_instance(dip), hdlp->ih_pri,
631 ddi_driver_name(rdip), ddi_get_instance(rdip));
632 }
633
634 *(int *)result = hdlp->ih_pri;
635
636 break;
637 case DDI_INTROP_ADDISR:
638 ret = sbbc_add_intr_impl(dip, rdip, intr_op, hdlp, result);
639 break;
640 case DDI_INTROP_REMISR:
641 ret = sbbc_remove_intr_impl(dip, rdip, intr_op, hdlp, result);
642 break;
643 case DDI_INTROP_ENABLE:
644 ret = sbbc_update_intr_state(dip, rdip, intr_op, hdlp, &result);
645 break;
646 case DDI_INTROP_DISABLE:
647 ret = sbbc_update_intr_state(dip, rdip, intr_op, hdlp, &result);
648 break;
649 case DDI_INTROP_NINTRS:
650 case DDI_INTROP_NAVAIL:
651 *(int *)result = i_ddi_get_intx_nintrs(rdip);
652 break;
653 case DDI_INTROP_SUPPORTED_TYPES:
654 /* PCI nexus driver supports only fixed interrupts */
655 *(int *)result = i_ddi_get_intx_nintrs(rdip) ?
656 DDI_INTR_TYPE_FIXED : 0;
657 break;
658 default:
659 ret = DDI_ENOTSUP;
660 break;
661 }
662
663 return (ret);
664 }
665
666
667 static int
668 sbbc_add_intr_impl(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op,
669 ddi_intr_handle_impl_t *hdlp, void *result)
670 {
671 sbbcsoft_t *sbbcsoftp;
672 sbbc_child_intr_t *childintr;
673 int instance, i, rval = DDI_SUCCESS;
674
675 SBBC_DBG2(SBBC_DBG_INTR, dip,
676 "add: rdip 0x%llx hdlp 0x%llx\n", rdip, hdlp);
677
678 /* insert the sbbc isr wrapper instead */
679 instance = ddi_get_instance(dip);
680 if (!(sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance)))
681 return (DDI_FAILURE);
682
683 childintr = kmem_zalloc(sizeof (struct sbbc_child_intr), KM_SLEEP);
684
685 childintr->name = ddi_get_name(rdip);
686 childintr->inum = hdlp->ih_inum;
687 childintr->intr_handler = hdlp->ih_cb_func;
688 childintr->arg1 = hdlp->ih_cb_arg1;
689 childintr->arg2 = hdlp->ih_cb_arg2;
690 childintr->status = SBBC_INTR_STATE_DISABLE;
691
692 for (i = 0; i < MAX_SBBC_DEVICES; i++) {
693 if (sbbcsoftp->child_intr[i] == 0) {
694 sbbcsoftp->child_intr[i] = childintr;
695 break;
696 }
697 }
698
699 DDI_INTR_ASSIGN_HDLR_N_ARGS(hdlp,
700 (ddi_intr_handler_t *)sbbc_intr_wrapper,
701 (caddr_t)sbbcsoftp, NULL);
702
703 if ((rval = i_ddi_intr_ops(dip, rdip, intr_op,
704 hdlp, result)) != DDI_SUCCESS) {
705 cmn_err(CE_WARN, "sbbc%d: failed to add intr for %s",
706 instance, ddi_get_name(rdip));
707 kmem_free(childintr, sizeof (struct sbbc_child_intr));
708 sbbcsoftp->child_intr[i] = NULL;
709 }
710
711 /*
712 * Restore original interrupt handler
713 * and arguments in interrupt handle.
714 */
715 DDI_INTR_ASSIGN_HDLR_N_ARGS(hdlp, childintr->intr_handler,
716 childintr->arg1, childintr->arg2);
717
718 return (rval);
719 }
720
721 static int
722 sbbc_remove_intr_impl(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op,
723 ddi_intr_handle_impl_t *hdlp, void *result)
724 {
725 sbbcsoft_t *sbbcsoftp;
726 sbbc_child_intr_t *childintr;
727 int instance, i, rval = DDI_SUCCESS;
728
729 SBBC_DBG2(SBBC_DBG_INTR, dip,
730 "remove: rdip 0x%llx hdlp 0x%llx\n", rdip, hdlp);
731
732 instance = ddi_get_instance(dip);
733 if (!(sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance)))
734 return (DDI_FAILURE);
735
736 /* remove the sbbc isr wrapper instead */
737 for (i = 0; i < MAX_SBBC_DEVICES; i++) {
738 if (sbbcsoftp->child_intr[i]) {
739 childintr = sbbcsoftp->child_intr[i];
740 if (childintr->status == SBBC_INTR_STATE_DISABLE &&
741 childintr->name == ddi_get_name(rdip)) {
742 /* put back child's inum */
743 hdlp->ih_inum = childintr->inum;
744 break;
745 }
746 }
747 }
748
749 if (i >= MAX_SBBC_DEVICES) {
750 cmn_err(CE_WARN, "sbbc%d:obound failed to remove intr for %s",
751 instance, ddi_get_name(rdip));
752 return (DDI_FAILURE);
753 }
754
755 if ((rval = i_ddi_intr_ops(dip, rdip, intr_op,
756 hdlp, result)) != DDI_SUCCESS) {
757 cmn_err(CE_WARN, "sbbc%d: failed to remove intr for %s",
758 instance, ddi_get_name(rdip));
759 return (rval);
760 }
761
762 kmem_free(childintr, sizeof (struct sbbc_child_intr));
763 sbbcsoftp->child_intr[i] = NULL;
764
765 return (rval);
766 }
767
768
769 static int
770 sbbc_update_intr_state(dev_info_t *dip, dev_info_t *rdip, ddi_intr_op_t intr_op,
771 ddi_intr_handle_impl_t *hdlp, void *result)
772 {
773 sbbcsoft_t *sbbcsoftp;
774 sbbc_child_intr_t *childintr;
775 int instance, i;
776 int ret = DDI_SUCCESS;
777
778 SBBC_DBG2(SBBC_DBG_INTR, dip, "sbbc_update_intr_state: "
779 "rdip 0x%llx hdlp 0x%llx state 0x%x\n", rdip, hdlp);
780
781 instance = ddi_get_instance(dip);
782 if (!(sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, instance)))
783 return (DDI_FAILURE);
784
785 for (i = 0; i < MAX_SBBC_DEVICES; i++) {
786 if (sbbcsoftp->child_intr[i]) {
787 childintr = sbbcsoftp->child_intr[i];
788 if (childintr->name == ddi_get_name(rdip))
789 break;
790 }
791 }
792
793 if (i >= MAX_SBBC_DEVICES) {
794 cmn_err(CE_WARN, "sbbc%d: failed to update intr state for %s",
795 instance, ddi_get_name(rdip));
796 return (DDI_FAILURE);
797 }
798
799 if ((ret = i_ddi_intr_ops(dip, rdip, intr_op,
800 hdlp, result)) != DDI_SUCCESS) {
801 cmn_err(CE_WARN, "sbbc%d: failed to update intr state for %s",
802 instance, ddi_get_name(rdip));
803 return (ret);
804 }
805
806 /* Update the interrupt state */
807 childintr->status = (intr_op == DDI_INTROP_ENABLE) ?
808 SBBC_INTR_STATE_ENABLE : SBBC_INTR_STATE_DISABLE;
809
810 return (ret);
811 }
812
813
814 /*
815 * This entry point is called before a child's probe or attach is called.
816 * The arg pointer points to child's dev_info_t structure.
817 */
818 static int
819 sbbc_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t op,
820 void *arg, void *result)
821 {
822 sbbc_child_regspec_t *child_rp;
823 int i, n;
824
825 SBBC_DBG3(SBBC_DBG_CTLOPS, dip,
826 "Initializing %s, arg %x, op %x\n",
827 ddi_driver_name(rdip), arg, op);
828
829 SBBCTRACE(sbbc_ctlops, 'CTLO', arg);
830
831 switch (op) {
832 case DDI_CTLOPS_INITCHILD: {
833 return (sbbc_initchild(dip, rdip, (dev_info_t *)arg));
834 }
835
836 case DDI_CTLOPS_UNINITCHILD: {
837 return (sbbc_uninitchild(rdip, (dev_info_t *)arg));
838 }
839
840 case DDI_CTLOPS_REPORTDEV:
841
842 cmn_err(CE_CONT, "?%s%d at %s%d: offset %s\n",
843 ddi_driver_name(rdip), ddi_get_instance(rdip),
844 ddi_driver_name(dip), ddi_get_instance(dip),
845 ddi_get_name_addr(rdip));
846 return (DDI_SUCCESS);
847
848 case DDI_CTLOPS_REGSIZE:
849
850 if (getprop(rdip, "reg", &child_rp, &i) != DDI_SUCCESS) {
851 return (DDI_FAILURE);
852 }
853 n = i / sizeof (sbbc_child_regspec_t);
854 if (*(int *)arg < 0 || *(int *)arg >= n) {
855 kmem_free(child_rp, i);
856 return (DDI_FAILURE);
857 }
858 *((off_t *)result) = child_rp[*(int *)arg].size;
859 kmem_free(child_rp, i);
860 return (DDI_SUCCESS);
861
862 case DDI_CTLOPS_NREGS:
863
864 if (getprop(rdip, "reg", &child_rp, &i) != DDI_SUCCESS) {
865 return (DDI_FAILURE);
866 }
867 *((uint_t *)result) = i / sizeof (sbbc_child_regspec_t);
868 kmem_free(child_rp, i);
869 return (DDI_SUCCESS);
870 }
871
872 /*
873 * Now pass the request up to our parent.
874 */
875 SBBC_DBG0(SBBC_DBG_CTLOPS, dip, "Calling ddi_ctlops\n");
876
877 return (ddi_ctlops(dip, rdip, op, arg, result));
878 }
879
880
881 /*
882 * The following routine uses ranges property, that was read earlier, and
883 * takes child's reg property, and computes the complete address and size
884 * for the PCI parent to map.
885 */
886 static int
887 sbbc_apply_range(struct sbbcsoft *sbbc_p, dev_info_t *rdip,
888 sbbc_child_regspec_t *child_rp, pci_regspec_t *rp)
889 {
890 int b;
891 int rval = DDI_SUCCESS;
892 struct sbbc_pci_rangespec *rangep = sbbc_p->rangep;
893 int nrange = sbbc_p->range_cnt;
894
895 SBBC_DBG4(SBBC_DBG_MAPRANGES, rdip,
896 "Applying ranges for %s, rangep %llx, child_rp %llx, range %x\n",
897 ddi_driver_name(rdip), sbbc_p->rangep, child_rp, nrange);
898
899 SBBCTRACE(sbbc_apply_range, 'APPL', sbbc_p);
900
901 for (b = 0; b < nrange; ++b, ++rangep) {
902
903 /* Make sure the correct range is being mapped */
904 if (child_rp->addr_hi == rangep->sbbc_phys_hi)
905 /* See if we fit in this range */
906 if ((child_rp->addr_low >=
907 rangep->sbbc_phys_low) &&
908 ((child_rp->addr_low + child_rp->size - 1)
909 <= (rangep->sbbc_phys_low +
910 rangep->rng_size - 1))) {
911 uint_t addr_offset = child_rp->addr_low -
912 rangep->sbbc_phys_low;
913 /*
914 * Use the range entry to translate
915 * the SBBC physical address into the
916 * parents PCI space.
917 */
918 rp->pci_phys_hi =
919 rangep->pci_phys_hi;
920 rp->pci_phys_mid = rangep->pci_phys_mid;
921 rp->pci_phys_low =
922 rangep->pci_phys_low + addr_offset;
923 rp->pci_size_hi = 0;
924 rp->pci_size_low =
925 min(child_rp->size, (rangep->rng_size -
926 addr_offset));
927
928 break;
929 }
930 }
931
932 if (b == nrange) {
933 cmn_err(CE_WARN, "out_of_range %s", ddi_get_name(rdip));
934 return (DDI_ME_REGSPEC_RANGE);
935 }
936
937 return (rval);
938 }
939
940
941 /*
942 * The following routine reads sbbc's ranges property from OBP and sets up
943 * its soft structure with it.
944 */
945 static int
946 sbbc_get_ranges(struct sbbcsoft *sbbcsoftp)
947 {
948 struct sbbc_pci_rangespec *rangep;
949 int range_len, nrange;
950
951 if (ddi_getlongprop(DDI_DEV_T_ANY, sbbcsoftp->dip, DDI_PROP_DONTPASS,
952 "ranges", (caddr_t)&rangep, &range_len) != DDI_SUCCESS) {
953 cmn_err(CE_WARN, "SBBC: couldn't get %s ranges property %d",
954 ddi_get_name(sbbcsoftp->dip), sbbcsoftp->instance);
955 return (DDI_ME_REGSPEC_RANGE);
956 }
957
958 nrange = range_len / sizeof (struct sbbc_pci_rangespec);
959
960 if (!nrange) {
961 kmem_free(rangep, range_len);
962 return (DDI_FAILURE);
963 }
964
965 /* setup the soft structure with ranges info. */
966 sbbcsoftp->rangep = rangep;
967 sbbcsoftp->range_cnt = nrange;
968 sbbcsoftp->range_len = range_len;
969
970 return (DDI_SUCCESS);
971 }
972
973
974 /*
975 * Configure the SBBC for PCI
976 */
977 static int
978 sbbc_config4pci(struct sbbcsoft *sbbcsoftp)
979 {
980 ddi_acc_handle_t conf_handle;
981 uint16_t comm, vendid, devid, stat;
982 uint8_t revid;
983
984 #ifdef DEBUG
985 if (sbbc_dbg_flags & SBBC_DBG_PCICONF) {
986 cmn_err(CE_CONT,
987 "sbbc_config4pci: sbbcsoftp %p\n", (void *)sbbcsoftp);
988 }
989 #endif
990 if (pci_config_setup(sbbcsoftp->dip, &conf_handle) != DDI_SUCCESS)
991 return (1);
992
993 vendid = pci_config_get16(conf_handle, PCI_CONF_VENID);
994 devid = pci_config_get16(conf_handle, PCI_CONF_DEVID);
995 comm = pci_config_get16(conf_handle, PCI_CONF_COMM);
996 stat = pci_config_get16(conf_handle, PCI_CONF_STAT);
997 revid = pci_config_get8(conf_handle, PCI_CONF_REVID);
998
999 #ifdef DEBUG
1000 if (sbbc_dbg_flags & SBBC_DBG_PCICONF) {
1001 cmn_err(CE_CONT,
1002 "SBBC vendid %x, devid %x, comm %x, stat %x, revid %x\n",
1003 vendid, devid, comm, stat, revid);
1004 }
1005 #endif
1006 comm = (PCI_COMM_ME | PCI_COMM_MAE | PCI_COMM_SERR_ENABLE |
1007 PCI_COMM_PARITY_DETECT);
1008
1009 pci_config_put16(conf_handle, PCI_CONF_COMM, comm);
1010
1011 comm = pci_config_get16(conf_handle, PCI_CONF_COMM);
1012
1013 #ifdef DEBUG
1014 if (sbbc_dbg_flags & SBBC_DBG_PCICONF) {
1015 cmn_err(CE_CONT, "comm %x\n", comm);
1016 }
1017 #endif
1018 pci_config_teardown(&conf_handle);
1019
1020 return (0);
1021 }
1022
1023
1024 /* ARGSUSED0 */
1025 int
1026 sbbc_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
1027 {
1028 dev_t dev = (dev_t)arg;
1029 struct sbbcsoft *sbbcsoftp;
1030 int instance, ret;
1031
1032 instance = getminor(dev);
1033
1034 SBBCTRACE(sbbc_getinfo, 'GINF', instance);
1035
1036 switch (infocmd) {
1037 case DDI_INFO_DEVT2DEVINFO:
1038 sbbcsoftp = (struct sbbcsoft *)
1039 ddi_get_soft_state(sbbcsoft_statep, instance);
1040 if (sbbcsoftp == NULL) {
1041 *result = (void *) NULL;
1042 ret = DDI_FAILURE;
1043 } else {
1044 *result = sbbcsoftp->dip;
1045 ret = DDI_SUCCESS;
1046 }
1047 break;
1048 case DDI_INFO_DEVT2INSTANCE:
1049 *result = (void *)(uintptr_t)instance;
1050 ret = DDI_SUCCESS;
1051 break;
1052 default:
1053 ret = DDI_FAILURE;
1054 break;
1055 }
1056
1057 return (ret);
1058 }
1059
1060 /*ARGSUSED1*/
1061 static int
1062 sbbc_open(dev_t *dev, int flag, int otype, cred_t *credp)
1063 {
1064 struct sbbcsoft *sbbcsoftp;
1065 int instance;
1066
1067 /* check privilege of caller process */
1068 if (drv_priv(credp)) {
1069 return (EPERM);
1070 }
1071
1072 instance = getminor(*dev);
1073 if (instance < 0)
1074 return (ENXIO);
1075 sbbcsoftp = (struct sbbcsoft *)ddi_get_soft_state(sbbcsoft_statep,
1076 instance);
1077 SBBCTRACE(sbbc_open, 'OPEN', sbbcsoftp);
1078
1079 if (sbbcsoftp == NULL)
1080 return (ENXIO);
1081
1082 mutex_enter(&sbbcsoftp->umutex);
1083
1084 /* check for exclusive access */
1085 if ((sbbcsoftp->oflag == TRUE)) {
1086 mutex_exit(&sbbcsoftp->umutex);
1087 return (EBUSY);
1088 }
1089 sbbcsoftp->oflag = TRUE;
1090
1091 mutex_exit(&sbbcsoftp->umutex);
1092
1093 return (0);
1094 }
1095
1096 /*ARGSUSED1*/
1097 static int
1098 sbbc_close(dev_t dev, int flag, int otype, cred_t *credp)
1099 {
1100 struct sbbcsoft *sbbcsoftp;
1101 int instance;
1102
1103 instance = getminor(dev);
1104 if (instance < 0)
1105 return (ENXIO);
1106 sbbcsoftp = (struct sbbcsoft *)ddi_get_soft_state(sbbcsoft_statep,
1107 instance);
1108 /* wait till all output activity has ceased */
1109
1110 mutex_enter(&sbbcsoftp->umutex);
1111
1112 SBBCTRACE(sbbc_close, 'CLOS', sbbcsoftp);
1113
1114 sbbcsoftp->oflag = FALSE;
1115
1116 mutex_exit(&sbbcsoftp->umutex);
1117
1118 return (0);
1119 }
1120
1121 /*ARGSUSED2*/
1122 static int
1123 sbbc_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp,
1124 int *rvalp)
1125 {
1126 struct sbbcsoft *sbbcsoftp;
1127
1128 SBBCTRACE(sbbc_ioctl, 'IOCT', arg);
1129
1130 sbbcsoftp = ddi_get_soft_state(sbbcsoft_statep, getminor(dev));
1131
1132 if (sbbcsoftp == NULL) {
1133 return (ENXIO);
1134 }
1135
1136 switch (cmd) {
1137 case SBBC_SBBCREG_WR:
1138 {
1139 struct ssc_sbbc_regio sbbcregs;
1140 uint64_t offset;
1141
1142 if (sbbc_scmode == FALSE) {
1143 /* then we're executing on Domain; Writes not allowed */
1144 return (EINVAL);
1145 }
1146
1147 if (arg == NULL) {
1148 return (ENXIO);
1149 }
1150
1151 if (ddi_copyin((caddr_t)arg, (caddr_t)&sbbcregs,
1152 sizeof (struct ssc_sbbc_regio), mode)) {
1153 cmn_err(CE_WARN, "sbbc_ioctl: copyin failed arg %p",
1154 (void *)arg);
1155 return (EFAULT);
1156 }
1157
1158 /*
1159 * Bug #4287186: SBBC driver on cp1500 doesn't check length for
1160 * reads or writes
1161 * Note that I've also added a check to make sure the offset is
1162 * valid, since misaligned (i.e. not on 16-byte boundary)
1163 * accesses or accesses to "Reserved" register offsets are
1164 * treated as unmapped by the SBBC.
1165 */
1166 if ((sbbcregs.len != 4) ||
1167 !sbbc_offset_valid(sbbcregs.offset)) {
1168 return (EINVAL);
1169 }
1170
1171 offset = (uint64_t)sbbcsoftp->pci_sbbc_map;
1172 offset += sbbcregs.offset;
1173 ddi_put32(sbbcsoftp->pci_sbbc_map_handle, (uint32_t *)offset,
1174 sbbcregs.value);
1175 }
1176 break;
1177 case SBBC_SBBCREG_RD:
1178 {
1179 struct ssc_sbbc_regio sbbcregs;
1180 uint64_t offset;
1181
1182 if (sbbc_scmode == FALSE) {
1183 /* then we're executing on Domain; Reads not allowed */
1184 return (EINVAL);
1185 }
1186
1187 if (arg == NULL) {
1188 return (ENXIO);
1189 }
1190
1191 if (ddi_copyin((caddr_t)arg, (caddr_t)&sbbcregs,
1192 sizeof (struct ssc_sbbc_regio), mode)) {
1193 cmn_err(CE_WARN, "sbbc_ioctl: copyin failed arg %p",
1194 (void *)arg);
1195 return (EFAULT);
1196 }
1197
1198 /*
1199 * Bug #4287186: SBBC driver on cp1500 doesn't check length for
1200 * reads or writes
1201 * Note that I've also added a check to make sure the offset is
1202 * valid, since misaligned (i.e. not on 16-byte boundary)
1203 * accesses or accesses to "Reserved" register offsets are
1204 * treated as unmapped by the SBBC.
1205 */
1206 if ((sbbcregs.len != 4) ||
1207 !sbbc_offset_valid(sbbcregs.offset)) {
1208 return (EINVAL);
1209 }
1210
1211 offset = (uint64_t)sbbcsoftp->pci_sbbc_map;
1212 offset += sbbcregs.offset;
1213
1214 sbbcregs.value = ddi_get32(sbbcsoftp->pci_sbbc_map_handle,
1215 (uint32_t *)offset);
1216
1217 if (ddi_copyout((caddr_t)&sbbcregs.value,
1218 &((struct ssc_sbbc_regio *)arg)->value,
1219 sbbcregs.len, mode)) {
1220 cmn_err(CE_WARN, "sbbc_ioctl:copyout failed arg %p",
1221 (void *)arg);
1222 return (EFAULT);
1223 }
1224 }
1225 break;
1226 default:
1227 cmn_err(CE_WARN, "sbbc_ioctl:Illegal command 0x%08x", cmd);
1228 return (ENOTTY);
1229 }
1230
1231 return (DDI_SUCCESS);
1232 }
1233
1234 static void
1235 sbbc_remove_reg_maps(struct sbbcsoft *sbbcsoftp)
1236 {
1237 SBBCTRACE(sbbc_remove_reg_maps, 'RMAP', sbbcsoftp);
1238 if (sbbcsoftp->pci_sbbc_map_handle)
1239 ddi_regs_map_free(&sbbcsoftp->pci_sbbc_map_handle);
1240 }
1241
1242
1243 static int
1244 sbbc_init(struct sbbcsoft *sbbcsoftp)
1245 {
1246 /* Mask all the interrupts until we are ready. */
1247 ddi_put32(sbbcsoftp->pci_sbbc_map_handle,
1248 &sbbcsoftp->pci_sbbc_map->sys_intr_enable,
1249 0x00000000);
1250
1251 return (1);
1252 }
1253
1254 /*
1255 * The following routine is a generic routine to initialize any child of
1256 * sbbc nexus driver information into parent private data structure.
1257 */
1258 /* ARGSUSED0 */
1259 static int
1260 sbbc_initchild(dev_info_t *dip, dev_info_t *rdip, dev_info_t *child)
1261 {
1262 sbbc_child_regspec_t *child_rp;
1263 int reglen, slot;
1264 char name[10];
1265
1266 SBBC_DBG1(SBBC_DBG_INITCHILD, dip, "Initializing %s\n",
1267 ddi_driver_name(rdip));
1268
1269 /*
1270 * Initialize a child
1271 * Set the address portion of the node name based on the
1272 * address/offset.
1273 */
1274 if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS,
1275 "reg", (caddr_t)&child_rp, &reglen) != DDI_SUCCESS) {
1276 if (strcmp(ddi_node_name(child), "hotplug-controller") == 0) {
1277 slot = 1;
1278 (void) sprintf(name, "%x", slot);
1279 ddi_set_name_addr(child, name);
1280 return (DDI_SUCCESS);
1281 }
1282 return (DDI_FAILURE);
1283 }
1284
1285 SBBC_DBG3(SBBC_DBG_INITCHILD, dip, "hi 0x%x, low 0x%x, size 0x%x\n",
1286 child_rp->addr_hi, child_rp->addr_low, child_rp->size);
1287
1288 (void) sprintf(name, "%x,%x", child_rp->addr_hi, child_rp->addr_low);
1289
1290 /*
1291 * set child's addresses from the reg property into parent private
1292 * data structure.
1293 */
1294 ddi_set_name_addr(child, name);
1295 kmem_free(child_rp, reglen);
1296
1297 ddi_set_parent_data(child, NULL);
1298
1299 return (DDI_SUCCESS);
1300 }
1301
1302
1303 /* ARGSUSED0 */
1304 static int
1305 sbbc_uninitchild(dev_info_t *rdip, dev_info_t *child)
1306 {
1307
1308 SBBC_DBG1(SBBC_DBG_UNINITCHILD, rdip, "Uninitializing %s\n",
1309 ddi_driver_name(rdip));
1310
1311 ddi_set_name_addr(child, NULL);
1312 ddi_remove_minor_node(child, NULL);
1313 impl_rem_dev_props(child);
1314
1315 return (DDI_SUCCESS);
1316
1317 }
1318
1319
1320 /*
1321 * The following routine is an interrupt service routine that is used
1322 * as a wrapper to all the children requiring interrupt services.
1323 */
1324 static uint_t
1325 sbbc_intr_wrapper(caddr_t arg)
1326 {
1327
1328 struct sbbcsoft *sbbcsoftp = (struct sbbcsoft *)arg;
1329 int i, rval;
1330
1331 SBBC_DBG1(SBBC_DBG_INTR, sbbcsoftp->dip, "Isr arg 0x%llx\n", arg);
1332
1333 mutex_enter(&sbbcsoftp->sbbc_intr_mutex);
1334
1335 for (i = 0; i < MAX_SBBC_DEVICES; i++) {
1336 /*
1337 * Check the interrupt status reg. to determine the cause.
1338 */
1339 /*
1340 * Check the error status reg. to determine the cause.
1341 */
1342 if (sbbcsoftp->child_intr[i] &&
1343 sbbcsoftp->child_intr[i]->status ==
1344 SBBC_INTR_STATE_ENABLE) {
1345 /*
1346 * Dispatch the children interrupt service routines and
1347 * look for someone to claim.
1348 */
1349 rval = sbbcsoftp->child_intr[i]->intr_handler(
1350 sbbcsoftp->child_intr[i]->arg1,
1351 sbbcsoftp->child_intr[i]->arg2);
1352
1353 if (rval == DDI_INTR_CLAIMED) {
1354 mutex_exit(&sbbcsoftp->sbbc_intr_mutex);
1355 return (rval);
1356 }
1357 }
1358 }
1359
1360 mutex_exit(&sbbcsoftp->sbbc_intr_mutex);
1361
1362 /* for now do not claim since we know its not enabled */
1363 return (DDI_INTR_UNCLAIMED);
1364 }
1365
1366
1367 /*
1368 * This function checks an SBBC register offset to make sure that it is properly
1369 * aligned (i.e. on a 16-byte boundary) and that it corresponds to an accessible
1370 * register. Since the SBBC treates accesses to unaligned or reserved addresses
1371 * as unmapped, failing to check for these would leave a loophole that could be
1372 * used to crash the system.
1373 */
1374 static int
1375 sbbc_offset_valid(uint32_t offset) {
1376 /*
1377 * Check for proper alignment first.
1378 */
1379 if ((offset % 16) != 0) {
1380 return (0);
1381 }
1382
1383 /*
1384 * Now start checking for the various reserved ranges.
1385 * While sticking a bunch of constants in the code (rather than
1386 * #define'd values) is usually best avoided, it would probably
1387 * do more harm than good here. These values were taken from the
1388 * Serengeti Architecture Programmer's Reference Manual dated
1389 * August 10, 1999, pages 2-99 through 2-103. While there are
1390 * various "clever" ways this check could be performed that would
1391 * be slightly more efficient, arranging the code in this fashion
1392 * should maximize maintainability.
1393 */
1394 if (((offset >= 0x001a0) && (offset <= 0x001ff)) ||
1395 ((offset >= 0x002a0) && (offset <= 0x002ff)) ||
1396 ((offset >= 0x00350) && (offset <= 0x003ff)) ||
1397 ((offset >= 0x00500) && (offset <= 0x00fff)) ||
1398 ((offset >= 0x01160) && (offset <= 0x011ff)) ||
1399 ((offset >= 0x01210) && (offset <= 0x017ff)) ||
1400 ((offset >= 0x01810) && (offset <= 0x01fff)) ||
1401 ((offset >= 0x02030) && (offset <= 0x022ff)) ||
1402 ((offset >= 0x02340) && (offset <= 0x03fff)) ||
1403 ((offset >= 0x04030) && (offset <= 0x05fff)) ||
1404 ((offset >= 0x060a0) && (offset <= 0x060ff)) ||
1405 (offset == 0x06120) ||
1406 ((offset >= 0x06190) && (offset <= 0x061ff)) ||
1407 ((offset >= 0x06230) && (offset <= 0x062f0)) ||
1408 (offset > 0x06320)) {
1409 return (0);
1410 }
1411
1412 return (1);
1413 }
1414
1415 #ifdef DEBUG
1416 void
1417 sbbc_dbg(uint32_t flag, dev_info_t *dip, char *fmt,
1418 uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5)
1419 {
1420 char *s = NULL;
1421
1422 if (sbbc_dbg_flags && ((sbbc_dbg_flags & flag) == flag)) {
1423 switch (flag) {
1424 case SBBC_DBG_ATTACH:
1425 s = "attach";
1426 break;
1427 case SBBC_DBG_DETACH:
1428 s = "detach";
1429 break;
1430 case SBBC_DBG_CTLOPS:
1431 s = "ctlops";
1432 break;
1433 case SBBC_DBG_INITCHILD:
1434 s = "initchild";
1435 break;
1436 case SBBC_DBG_UNINITCHILD:
1437 s = "uninitchild";
1438 break;
1439 case SBBC_DBG_BUSMAP:
1440 s = "busmap";
1441 break;
1442 case SBBC_DBG_INTR:
1443 s = "intr";
1444 break;
1445 case SBBC_DBG_INTROPS:
1446 s = "intr_ops";
1447 break;
1448 case SBBC_DBG_PCICONF:
1449 s = "pciconfig";
1450 break;
1451 case SBBC_DBG_MAPRANGES:
1452 s = "mapranges";
1453 break;
1454 case SBBC_DBG_PROPERTIES:
1455 s = "properties";
1456 break;
1457 case SBBC_DBG_OPEN:
1458 s = "open";
1459 break;
1460 case SBBC_DBG_CLOSE:
1461 s = "close";
1462 break;
1463 case SBBC_DBG_IOCTL:
1464 s = "ioctl";
1465 break;
1466 default:
1467 s = "Unknown debug flag";
1468 break;
1469 }
1470
1471 cmn_err(CE_CONT, "%s_%s(%d): ", ddi_driver_name(dip), s,
1472 ddi_get_instance(dip));
1473 cmn_err(CE_CONT, fmt, a1, a2, a3, a4, a5);
1474 }
1475 }
1476
1477 /*
1478 * Dump the SBBC chip's Device ID Register
1479 */
1480 static void sbbc_dump_devid(dev_info_t *dip, struct sbbcsoft *sbbcsoftp,
1481 int instance)
1482 {
1483 uint32_t sbbc_id_reg;
1484 uint16_t sbbc_id_reg_partid;
1485 uint16_t sbbc_id_reg_manfid;
1486
1487 sbbc_id_reg = ddi_get32(sbbcsoftp->pci_sbbc_map_handle,
1488 (uint32_t *)&sbbcsoftp->pci_sbbc_map->devid);
1489
1490 sbbc_id_reg_partid = ((sbbc_id_reg << 4) >> 16);
1491 sbbc_id_reg_manfid = ((sbbc_id_reg << 20) >> 21);
1492
1493 SBBC_DBG4(SBBC_DBG_ATTACH, dip,
1494 "FOUND SBBC(%d) Version %x, Partid %x, Manfid %x\n",
1495 instance, (sbbc_id_reg >> 28), sbbc_id_reg_partid,
1496 sbbc_id_reg_manfid);
1497 }
1498
1499 #endif /* DEBUG */
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