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 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Host to hypervisor virtual devices nexus driver 31 * 32 * TODO: 33 * - Add watchpoints on vbd/vif and enumerate/offline on watch callback 34 * - Add DR IOCTLs 35 * - Filter/restrict property lookups into xenstore 36 */ 37 38 #include <sys/conf.h> 39 #include <sys/kmem.h> 40 #include <sys/debug.h> 41 #include <sys/modctl.h> 42 #include <sys/autoconf.h> 43 #include <sys/ddi_impldefs.h> 44 #include <sys/ddi_subrdefs.h> 45 #include <sys/ddi.h> 46 #include <sys/sunddi.h> 47 #include <sys/sunndi.h> 48 #include <sys/avintr.h> 49 #include <sys/psm.h> 50 #include <sys/spl.h> 51 #include <sys/promif.h> 52 #include <sys/list.h> 53 #include <sys/bootconf.h> 54 #include <sys/bootsvcs.h> 55 #include <util/sscanf.h> 56 #include <sys/mach_intr.h> 57 #include <sys/bootinfo.h> 58 #ifdef XPV_HVM_DRIVER 59 #include <sys/xpv_support.h> 60 #include <sys/hypervisor.h> 61 #include <sys/archsystm.h> 62 #include <sys/cpu.h> 63 #include <public/xen.h> 64 #include <public/event_channel.h> 65 #include <public/io/xenbus.h> 66 #else 67 #include <sys/hypervisor.h> 68 #include <sys/evtchn_impl.h> 69 #include <sys/xen_mmu.h> 70 #endif 71 #include <xen/sys/xenbus_impl.h> 72 #include <xen/sys/xendev.h> 73 74 /* 75 * DDI dev_ops entrypoints 76 */ 77 static int xpvd_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 78 static int xpvd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 79 static int xpvd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); 80 81 82 /* 83 * NDI bus_ops entrypoints 84 */ 85 static int xpvd_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, 86 void *); 87 static int xpvd_intr_ops(dev_info_t *, dev_info_t *, ddi_intr_op_t, 88 ddi_intr_handle_impl_t *, void *); 89 static int xpvd_prop_op(dev_t, dev_info_t *, dev_info_t *, ddi_prop_op_t, 90 int, char *, caddr_t, int *); 91 static int xpvd_bus_config(dev_info_t *, uint_t, ddi_bus_config_op_t, 92 void *, dev_info_t **); 93 static int xpvd_bus_unconfig(dev_info_t *, uint_t, ddi_bus_config_op_t, 94 void *); 95 static int xpvd_get_eventcookie(dev_info_t *, dev_info_t *, 96 char *, ddi_eventcookie_t *); 97 static int xpvd_add_eventcall(dev_info_t *, dev_info_t *, 98 ddi_eventcookie_t, void (*)(dev_info_t *, 99 ddi_eventcookie_t, void *, void *), 100 void *, ddi_callback_id_t *); 101 static int xpvd_remove_eventcall(dev_info_t *, ddi_callback_id_t); 102 static int xpvd_post_event(dev_info_t *, dev_info_t *, 103 ddi_eventcookie_t, void *); 104 105 /* 106 * misc functions 107 */ 108 static int xpvd_enable_intr(dev_info_t *, ddi_intr_handle_impl_t *, int); 109 static void xpvd_disable_intr(dev_info_t *, ddi_intr_handle_impl_t *, int); 110 static int xpvd_removechild(dev_info_t *); 111 static int xpvd_initchild(dev_info_t *); 112 static int xpvd_name_child(dev_info_t *, char *, int); 113 static boolean_t i_xpvd_parse_devname(char *, xendev_devclass_t *, 114 domid_t *, int *); 115 116 117 /* Extern declarations */ 118 extern int (*psm_intr_ops)(dev_info_t *, ddi_intr_handle_impl_t *, 119 psm_intr_op_t, int *); 120 121 struct bus_ops xpvd_bus_ops = { 122 BUSO_REV, 123 i_ddi_bus_map, 124 NULL, 125 NULL, 126 NULL, 127 i_ddi_map_fault, 128 ddi_dma_map, 129 ddi_dma_allochdl, 130 ddi_dma_freehdl, 131 ddi_dma_bindhdl, 132 ddi_dma_unbindhdl, 133 ddi_dma_flush, 134 ddi_dma_win, 135 ddi_dma_mctl, 136 xpvd_ctlops, 137 xpvd_prop_op, 138 xpvd_get_eventcookie, 139 xpvd_add_eventcall, 140 xpvd_remove_eventcall, 141 xpvd_post_event, 142 0, /* (*bus_intr_ctl)(); */ 143 xpvd_bus_config, 144 xpvd_bus_unconfig, 145 NULL, /* (*bus_fm_init)(); */ 146 NULL, /* (*bus_fm_fini)(); */ 147 NULL, /* (*bus_fm_access_enter)(); */ 148 NULL, /* (*bus_fm_access_exit)(); */ 149 NULL, /* (*bus_power)(); */ 150 xpvd_intr_ops /* (*bus_intr_op)(); */ 151 }; 152 153 struct dev_ops xpvd_ops = { 154 DEVO_REV, /* devo_rev */ 155 0, /* refcnt */ 156 xpvd_info, /* info */ 157 nulldev, /* identify */ 158 nulldev, /* probe */ 159 xpvd_attach, /* attach */ 160 xpvd_detach, /* detach */ 161 nulldev, /* reset */ 162 (struct cb_ops *)0, /* driver operations */ 163 &xpvd_bus_ops /* bus operations */ 164 }; 165 166 167 dev_info_t *xpvd_dip; 168 169 #define CF_DBG 0x1 170 #define ALL_DBG 0xff 171 172 static ndi_event_definition_t xpvd_ndi_event_defs[] = { 173 { 0, XS_OE_STATE, EPL_KERNEL, NDI_EVENT_POST_TO_TGT }, 174 { 1, XS_HP_STATE, EPL_KERNEL, NDI_EVENT_POST_TO_TGT }, 175 }; 176 177 #define XENDEV_N_NDI_EVENTS \ 178 (sizeof (xpvd_ndi_event_defs) / sizeof (xpvd_ndi_event_defs[0])) 179 180 static ndi_event_set_t xpvd_ndi_events = { 181 NDI_EVENTS_REV1, XENDEV_N_NDI_EVENTS, xpvd_ndi_event_defs 182 }; 183 184 static ndi_event_hdl_t xpvd_ndi_event_handle; 185 186 /* 187 * Hypervisor interrupt capabilities 188 */ 189 #define XENDEV_INTR_CAPABILITIES \ 190 (DDI_INTR_FLAG_EDGE | DDI_INTR_FLAG_MASKABLE | DDI_INTR_FLAG_PENDING) 191 192 /* 193 * Module linkage information for the kernel. 194 */ 195 196 static struct modldrv modldrv = { 197 &mod_driverops, /* Type of module */ 198 "virtual device nexus driver %I%", 199 &xpvd_ops, /* driver ops */ 200 }; 201 202 static struct modlinkage modlinkage = { 203 MODREV_1, 204 (void *)&modldrv, 205 NULL 206 }; 207 208 int 209 _init(void) 210 { 211 return (mod_install(&modlinkage)); 212 } 213 214 int 215 _fini(void) 216 { 217 return (mod_remove(&modlinkage)); 218 } 219 220 int 221 _info(struct modinfo *modinfop) 222 { 223 return (mod_info(&modlinkage, modinfop)); 224 } 225 226 /* ARGSUSED */ 227 static int 228 xpvd_info(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 229 { 230 switch (cmd) { 231 default: 232 return (DDI_FAILURE); 233 234 case DDI_INFO_DEVT2INSTANCE: 235 *result = (void *)0; 236 return (DDI_SUCCESS); 237 238 case DDI_INFO_DEVT2DEVINFO: 239 *result = (void *)xpvd_dip; 240 return (DDI_SUCCESS); 241 } 242 } 243 244 /*ARGSUSED*/ 245 static int 246 xpvd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 247 { 248 extern void xvdi_watch_devices(int); 249 250 #ifdef XPV_HVM_DRIVER 251 if (xen_info == NULL) { 252 if (ddi_hold_installed_driver(ddi_name_to_major("xpv")) == 253 NULL) { 254 cmn_err(CE_WARN, "Couldn't initialize xpv framework"); 255 return (DDI_FAILURE); 256 } 257 } 258 #endif /* XPV_HVM_DRIVER */ 259 260 if (ndi_event_alloc_hdl(devi, 0, &xpvd_ndi_event_handle, 261 NDI_SLEEP) != NDI_SUCCESS) { 262 xpvd_dip = NULL; 263 return (DDI_FAILURE); 264 } 265 if (ndi_event_bind_set(xpvd_ndi_event_handle, &xpvd_ndi_events, 266 NDI_SLEEP) != NDI_SUCCESS) { 267 (void) ndi_event_free_hdl(xpvd_ndi_event_handle); 268 xpvd_dip = NULL; 269 return (DDI_FAILURE); 270 } 271 272 #ifdef XPV_HVM_DRIVER 273 (void) ddi_prop_update_int(DDI_DEV_T_NONE, devi, DDI_NO_AUTODETACH, 1); 274 #endif /* XPV_HVM_DRIVER */ 275 276 /* watch both frontend and backend for new devices */ 277 if (DOMAIN_IS_INITDOMAIN(xen_info)) 278 (void) xs_register_xenbus_callback(xvdi_watch_devices); 279 else 280 xvdi_watch_devices(XENSTORE_UP); 281 282 xpvd_dip = devi; 283 ddi_report_dev(devi); 284 285 return (DDI_SUCCESS); 286 } 287 288 /*ARGSUSED*/ 289 static int 290 xpvd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 291 { 292 return (DDI_FAILURE); 293 } 294 295 /* 296 * xpvd_prop_op() 297 * 298 * Query xenstore for the value of properties if DDI_PROP_NOTPROM 299 * is not set. Xenstore property values are represented as ascii strings. 300 */ 301 static int 302 xpvd_prop_op(dev_t dev, dev_info_t *dip, dev_info_t *ch_dip, 303 ddi_prop_op_t prop_op, int mod_flags, char *name, caddr_t valuep, 304 int *lengthp) 305 { 306 caddr_t buff; 307 struct xendev_ppd *pdp; 308 void *prop_str; 309 size_t prop_len; 310 unsigned int len; 311 int rv; 312 313 pdp = (struct xendev_ppd *)ddi_get_parent_data(ch_dip); 314 315 if ((pdp == NULL) || !(mod_flags & (DDI_PROP_CANSLEEP)) || 316 (mod_flags & DDI_PROP_NOTPROM) || (pdp->xd_xsdev.nodename == NULL)) 317 goto toss_off; 318 /* 319 * First try reading the property off the the frontend. if that 320 * fails, try and read it from the backend node. If that 321 * also fails, pass the request on the DDI framework 322 */ 323 prop_str = NULL; 324 if ((xenbus_read(XBT_NULL, pdp->xd_xsdev.nodename, name, &prop_str, 325 &len) == 0) && (prop_str != NULL) && (strlen(prop_str) != 0)) 326 goto got_xs_prop; 327 328 prop_str = NULL; 329 if ((pdp->xd_xsdev.otherend != NULL) && 330 (xenbus_read(XBT_NULL, pdp->xd_xsdev.otherend, name, &prop_str, 331 &len) == 0) && (prop_str != NULL) && (strlen(prop_str) != 0)) 332 goto got_xs_prop; 333 334 toss_off: 335 return (ddi_bus_prop_op(dev, dip, ch_dip, prop_op, 336 mod_flags | DDI_PROP_NOTPROM, name, valuep, lengthp)); 337 338 got_xs_prop: 339 prop_len = strlen(prop_str) + 1; 340 rv = DDI_PROP_SUCCESS; 341 342 switch (prop_op) { 343 case PROP_LEN: 344 *lengthp = prop_len; 345 break; 346 347 case PROP_LEN_AND_VAL_ALLOC: 348 buff = kmem_alloc((size_t)prop_len, KM_SLEEP); 349 *(caddr_t *)valuep = (caddr_t)buff; 350 break; 351 case PROP_LEN_AND_VAL_BUF: 352 buff = (caddr_t)valuep; 353 if (*lengthp < prop_len) 354 rv = DDI_PROP_BUF_TOO_SMALL; 355 break; 356 default: 357 rv = DDI_PROP_INVAL_ARG; 358 break; 359 } 360 361 if ((rv == DDI_PROP_SUCCESS) && (prop_len > 0)) { 362 bcopy(prop_str, buff, prop_len); 363 *lengthp = prop_len; 364 } 365 kmem_free(prop_str, len); 366 return (rv); 367 } 368 369 370 /* 371 * return address of the device's interrupt spec structure. 372 */ 373 /*ARGSUSED*/ 374 struct intrspec * 375 xpvd_get_ispec(dev_info_t *rdip, uint_t inumber) 376 { 377 struct xendev_ppd *pdp; 378 379 ASSERT(inumber == 0); 380 381 if ((pdp = ddi_get_parent_data(rdip)) == NULL) 382 return (NULL); 383 384 return (&pdp->xd_ispec); 385 } 386 387 /* 388 * return (and determine) the interrupt priority of the device. 389 */ 390 /*ARGSUSED*/ 391 static int 392 xpvd_get_priority(dev_info_t *dip, int inum, int *pri) 393 { 394 struct xendev_ppd *pdp; 395 struct intrspec *ispec; 396 int *intpriorities; 397 uint_t num_intpriorities; 398 399 DDI_INTR_NEXDBG((CE_CONT, "xpvd_get_priority: dip = 0x%p\n", 400 (void *)dip)); 401 402 ASSERT(inum == 0); 403 404 if ((pdp = ddi_get_parent_data(dip)) == NULL) 405 return (DDI_FAILURE); 406 407 ispec = &pdp->xd_ispec; 408 409 /* 410 * Set the default priority based on the device class. The 411 * "interrupt-priorities" property can be used to override 412 * the default. 413 */ 414 if (ispec->intrspec_pri == 0) { 415 ispec->intrspec_pri = xendev_devclass_ipl(pdp->xd_devclass); 416 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 417 DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, 418 "interrupt-priorities", &intpriorities, 419 &num_intpriorities) == DDI_PROP_SUCCESS) { 420 ispec->intrspec_pri = intpriorities[0]; 421 ddi_prop_free(intpriorities); 422 } 423 } 424 *pri = ispec->intrspec_pri; 425 return (DDI_SUCCESS); 426 } 427 428 429 /* 430 * xpvd_intr_ops: bus_intr_op() function for interrupt support 431 */ 432 /* ARGSUSED */ 433 static int 434 xpvd_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op, 435 ddi_intr_handle_impl_t *hdlp, void *result) 436 { 437 int priority = 0; 438 struct intrspec *ispec; 439 struct xendev_ppd *pdp; 440 441 DDI_INTR_NEXDBG((CE_CONT, 442 "xpvd_intr_ops: pdip 0x%p, rdip 0x%p, op %x handle 0x%p\n", 443 (void *)pdip, (void *)rdip, intr_op, (void *)hdlp)); 444 445 /* Process the request */ 446 switch (intr_op) { 447 case DDI_INTROP_SUPPORTED_TYPES: 448 /* Fixed supported by default */ 449 *(int *)result = DDI_INTR_TYPE_FIXED; 450 break; 451 452 case DDI_INTROP_NINTRS: 453 *(int *)result = 1; 454 break; 455 456 case DDI_INTROP_ALLOC: 457 /* 458 * FIXED interrupts: just return available interrupts 459 */ 460 if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) { 461 /* 462 * event channels are edge-triggered, maskable, 463 * and support int pending. 464 */ 465 hdlp->ih_cap |= XENDEV_INTR_CAPABILITIES; 466 *(int *)result = 1; /* DDI_INTR_TYPE_FIXED */ 467 } else { 468 return (DDI_FAILURE); 469 } 470 break; 471 472 case DDI_INTROP_FREE: 473 ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); 474 if (ispec == NULL) 475 return (DDI_FAILURE); 476 ispec->intrspec_pri = 0; /* mark as un-initialized */ 477 break; 478 479 case DDI_INTROP_GETPRI: 480 if (xpvd_get_priority(rdip, hdlp->ih_inum, &priority) != 481 DDI_SUCCESS) 482 return (DDI_FAILURE); 483 DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: priority = 0x%x\n", 484 priority)); 485 *(int *)result = priority; 486 break; 487 488 case DDI_INTROP_SETPRI: 489 /* Validate the interrupt priority passed */ 490 if (*(int *)result > LOCK_LEVEL) 491 return (DDI_FAILURE); 492 493 /* Ensure that PSM is all initialized */ 494 if (psm_intr_ops == NULL) 495 return (DDI_FAILURE); 496 497 /* Change the priority */ 498 if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_PRI, result) == 499 PSM_FAILURE) 500 return (DDI_FAILURE); 501 502 ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); 503 if (ispec == NULL) 504 return (DDI_FAILURE); 505 ispec->intrspec_pri = *(int *)result; 506 break; 507 508 case DDI_INTROP_ADDISR: 509 /* update ispec */ 510 ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); 511 if (ispec == NULL) 512 return (DDI_FAILURE); 513 ispec->intrspec_func = hdlp->ih_cb_func; 514 515 break; 516 517 case DDI_INTROP_REMISR: 518 ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); 519 pdp = (struct xendev_ppd *)ddi_get_parent_data(rdip); 520 521 ASSERT(pdp != NULL); 522 ASSERT(pdp->xd_evtchn != INVALID_EVTCHN); 523 524 if (ispec) { 525 ispec->intrspec_vec = 0; 526 ispec->intrspec_func = (uint_t (*)()) 0; 527 } 528 pdp->xd_evtchn = INVALID_EVTCHN; 529 break; 530 531 case DDI_INTROP_GETCAP: 532 if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) { 533 /* 534 * event channels are edge-triggered, maskable, 535 * and support int pending. 536 */ 537 *(int *)result = XENDEV_INTR_CAPABILITIES; 538 } else { 539 *(int *)result = 0; 540 return (DDI_FAILURE); 541 } 542 DDI_INTR_NEXDBG((CE_CONT, "xpvd: GETCAP returned = %x\n", 543 *(int *)result)); 544 break; 545 case DDI_INTROP_SETCAP: 546 DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: SETCAP cap=0x%x\n", 547 *(int *)result)); 548 if (psm_intr_ops == NULL) 549 return (DDI_FAILURE); 550 551 if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_CAP, result)) { 552 DDI_INTR_NEXDBG((CE_CONT, "GETCAP: psm_intr_ops" 553 " returned failure\n")); 554 return (DDI_FAILURE); 555 } 556 break; 557 558 case DDI_INTROP_ENABLE: 559 if (psm_intr_ops == NULL) 560 return (DDI_FAILURE); 561 562 if (xpvd_enable_intr(rdip, hdlp, (int)hdlp->ih_inum) != 563 DDI_SUCCESS) 564 return (DDI_FAILURE); 565 566 DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: ENABLE vec=0x%x\n", 567 hdlp->ih_vector)); 568 break; 569 570 case DDI_INTROP_DISABLE: 571 if (psm_intr_ops == NULL) 572 return (DDI_FAILURE); 573 xpvd_disable_intr(rdip, hdlp, hdlp->ih_inum); 574 DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: DISABLE vec = %x\n", 575 hdlp->ih_vector)); 576 break; 577 578 case DDI_INTROP_BLOCKENABLE: 579 case DDI_INTROP_BLOCKDISABLE: 580 return (DDI_FAILURE); 581 582 case DDI_INTROP_SETMASK: 583 case DDI_INTROP_CLRMASK: 584 #ifdef XPV_HVM_DRIVER 585 return (DDI_ENOTSUP); 586 #else 587 /* 588 * Handle this here 589 */ 590 if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) 591 return (DDI_FAILURE); 592 if (intr_op == DDI_INTROP_SETMASK) { 593 ec_disable_irq(hdlp->ih_vector); 594 } else { 595 ec_enable_irq(hdlp->ih_vector); 596 } 597 break; 598 #endif 599 case DDI_INTROP_GETPENDING: 600 #ifdef XPV_HVM_DRIVER 601 return (DDI_ENOTSUP); 602 #else 603 if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) 604 return (DDI_FAILURE); 605 *(int *)result = ec_pending_irq(hdlp->ih_vector); 606 DDI_INTR_NEXDBG((CE_CONT, "xpvd: GETPENDING returned = %x\n", 607 *(int *)result)); 608 break; 609 #endif 610 611 case DDI_INTROP_NAVAIL: 612 *(int *)result = 1; 613 DDI_INTR_NEXDBG((CE_CONT, "xpvd: NAVAIL returned = %x\n", 614 *(int *)result)); 615 break; 616 617 default: 618 return (i_ddi_intr_ops(pdip, rdip, intr_op, hdlp, result)); 619 } 620 621 return (DDI_SUCCESS); 622 } 623 624 625 static int 626 xpvd_enable_intr(dev_info_t *rdip, ddi_intr_handle_impl_t *hdlp, int inum) 627 { 628 int vector; 629 ihdl_plat_t *ihdl_plat_datap = (ihdl_plat_t *)hdlp->ih_private; 630 631 DDI_INTR_NEXDBG((CE_CONT, "xpvd_enable_intr: hdlp %p inum %x\n", 632 (void *)hdlp, inum)); 633 634 ihdl_plat_datap->ip_ispecp = xpvd_get_ispec(rdip, inum); 635 if (ihdl_plat_datap->ip_ispecp == NULL) 636 return (DDI_FAILURE); 637 638 /* translate the interrupt if needed */ 639 (void) (*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_XLATE_VECTOR, &vector); 640 DDI_INTR_NEXDBG((CE_CONT, "xpvd_enable_intr: priority=%x vector=%x\n", 641 hdlp->ih_pri, vector)); 642 643 /* Add the interrupt handler */ 644 if (!add_avintr((void *)hdlp, hdlp->ih_pri, hdlp->ih_cb_func, 645 DEVI(rdip)->devi_name, vector, hdlp->ih_cb_arg1, 646 hdlp->ih_cb_arg2, NULL, rdip)) 647 return (DDI_FAILURE); 648 649 /* Note this really is an irq. */ 650 hdlp->ih_vector = (ushort_t)vector; 651 652 return (DDI_SUCCESS); 653 } 654 655 656 static void 657 xpvd_disable_intr(dev_info_t *rdip, ddi_intr_handle_impl_t *hdlp, int inum) 658 { 659 int vector; 660 ihdl_plat_t *ihdl_plat_datap = (ihdl_plat_t *)hdlp->ih_private; 661 662 DDI_INTR_NEXDBG((CE_CONT, "xpvd_disable_intr: \n")); 663 ihdl_plat_datap->ip_ispecp = xpvd_get_ispec(rdip, inum); 664 if (ihdl_plat_datap->ip_ispecp == NULL) 665 return; 666 667 /* translate the interrupt if needed */ 668 (void) (*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_XLATE_VECTOR, &vector); 669 670 /* Disable the interrupt handler */ 671 rem_avintr((void *)hdlp, hdlp->ih_pri, hdlp->ih_cb_func, vector); 672 ihdl_plat_datap->ip_ispecp = NULL; 673 } 674 675 /*ARGSUSED*/ 676 static int 677 xpvd_ctlops(dev_info_t *dip, dev_info_t *rdip, 678 ddi_ctl_enum_t ctlop, void *arg, void *result) 679 { 680 switch (ctlop) { 681 case DDI_CTLOPS_REPORTDEV: 682 if (rdip == (dev_info_t *)0) 683 return (DDI_FAILURE); 684 cmn_err(CE_CONT, "?%s@%s, %s%d\n", ddi_node_name(rdip), 685 ddi_get_name_addr(rdip), ddi_driver_name(rdip), 686 ddi_get_instance(rdip)); 687 return (DDI_SUCCESS); 688 689 case DDI_CTLOPS_INITCHILD: 690 return (xpvd_initchild((dev_info_t *)arg)); 691 692 case DDI_CTLOPS_UNINITCHILD: 693 return (xpvd_removechild((dev_info_t *)arg)); 694 695 case DDI_CTLOPS_SIDDEV: 696 return (DDI_SUCCESS); 697 698 case DDI_CTLOPS_REGSIZE: 699 case DDI_CTLOPS_NREGS: 700 return (DDI_FAILURE); 701 702 case DDI_CTLOPS_POWER: { 703 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 704 } 705 706 default: 707 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 708 } 709 710 /* NOTREACHED */ 711 712 } 713 714 /* 715 * Assign the address portion of the node name 716 */ 717 static int 718 xpvd_name_child(dev_info_t *child, char *addr, int addrlen) 719 { 720 int *domain, *vdev; 721 uint_t ndomain, nvdev; 722 char *prop_str; 723 724 /* 725 * i_xpvd_parse_devname() knows the formats used by this 726 * routine. If this code changes, so must that. 727 */ 728 729 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 730 "domain", &domain, &ndomain) != DDI_PROP_SUCCESS) 731 return (DDI_FAILURE); 732 ASSERT(ndomain == 1); 733 734 /* 735 * Use "domain" and "vdev" properties (backend drivers). 736 */ 737 if (*domain != DOMID_SELF) { 738 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, 739 DDI_PROP_DONTPASS, "vdev", &vdev, &nvdev) 740 != DDI_PROP_SUCCESS) { 741 ddi_prop_free(domain); 742 return (DDI_FAILURE); 743 } 744 ASSERT(nvdev == 1); 745 746 (void) snprintf(addr, addrlen, "%d,%d", domain[0], vdev[0]); 747 ddi_prop_free(vdev); 748 ddi_prop_free(domain); 749 return (DDI_SUCCESS); 750 } 751 ddi_prop_free(domain); 752 753 /* 754 * Use "unit-address" property (frontend/softdev drivers). 755 */ 756 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 757 "unit-address", &prop_str) != DDI_PROP_SUCCESS) 758 return (DDI_FAILURE); 759 (void) strlcpy(addr, prop_str, addrlen); 760 ddi_prop_free(prop_str); 761 return (DDI_SUCCESS); 762 } 763 764 static int 765 xpvd_initchild(dev_info_t *child) 766 { 767 char addr[80]; 768 769 /* 770 * Pseudo nodes indicate a prototype node with per-instance 771 * properties to be merged into the real h/w device node. 772 */ 773 if (ndi_dev_is_persistent_node(child) == 0) { 774 ddi_set_parent_data(child, NULL); 775 776 /* 777 * Try to merge the properties from this prototype 778 * node into real h/w nodes. 779 */ 780 if (ndi_merge_node(child, xpvd_name_child) == DDI_SUCCESS) { 781 /* 782 * Merged ok - return failure to remove the node. 783 */ 784 ddi_set_name_addr(child, NULL); 785 return (DDI_FAILURE); 786 } 787 788 /* 789 * The child was not merged into a h/w node, 790 * but there's not much we can do with it other 791 * than return failure to cause the node to be removed. 792 */ 793 cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", 794 ddi_get_name(child), ddi_get_name_addr(child), 795 ddi_get_name(child)); 796 ddi_set_name_addr(child, NULL); 797 return (DDI_NOT_WELL_FORMED); 798 } 799 800 if (xvdi_init_dev(child) != DDI_SUCCESS) 801 return (DDI_FAILURE); 802 803 if (xpvd_name_child(child, addr, sizeof (addr)) != DDI_SUCCESS) { 804 xvdi_uninit_dev(child); 805 return (DDI_FAILURE); 806 } 807 ddi_set_name_addr(child, addr); 808 809 return (DDI_SUCCESS); 810 } 811 812 static int 813 xpvd_removechild(dev_info_t *dip) 814 { 815 xvdi_uninit_dev(dip); 816 817 ddi_set_name_addr(dip, NULL); 818 819 /* 820 * Strip the node to properly convert it back to prototype 821 * form. 822 */ 823 ddi_remove_minor_node(dip, NULL); 824 825 return (DDI_SUCCESS); 826 } 827 828 static int 829 xpvd_bus_unconfig(dev_info_t *parent, uint_t flag, ddi_bus_config_op_t op, 830 void *device_name) 831 { 832 return (ndi_busop_bus_unconfig(parent, flag, op, device_name)); 833 } 834 835 /* 836 * Given the name of a child of xpvd, determine the device class, 837 * domain and vdevnum to which it refers. 838 */ 839 static boolean_t 840 i_xpvd_parse_devname(char *name, xendev_devclass_t *devclassp, 841 domid_t *domp, int *vdevp) 842 { 843 int len = strlen(name) + 1; 844 char *device_name = i_ddi_strdup(name, KM_SLEEP); 845 char *cname = NULL, *caddr = NULL; 846 boolean_t ret; 847 848 i_ddi_parse_name(device_name, &cname, &caddr, NULL); 849 850 if ((cname == NULL) || (strlen(cname) == 0) || 851 (caddr == NULL) || (strlen(caddr) == 0)) { 852 ret = B_FALSE; 853 goto done; 854 } 855 856 *devclassp = xendev_nodename_to_devclass(cname); 857 if (*devclassp < 0) { 858 ret = B_FALSE; 859 goto done; 860 } 861 862 /* 863 * Parsing the address component requires knowledge of how 864 * xpvd_name_child() works. If that code changes, so must 865 * this. 866 */ 867 868 /* Backend format is "<domain>,<vdev>". */ 869 if (sscanf(caddr, "%d,%d", domp, vdevp) == 2) { 870 ret = B_TRUE; 871 goto done; 872 } 873 874 /* Frontend format is "<vdev>". */ 875 *domp = DOMID_SELF; 876 if (sscanf(caddr, "%x", vdevp) == 1) { 877 ret = B_TRUE; 878 goto done; 879 } 880 881 882 done: 883 kmem_free(device_name, len); 884 return (ret); 885 } 886 887 /* 888 * xpvd_bus_config() 889 * 890 * BUS_CONFIG_ONE: 891 * Enumerate the exact instance of a driver. 892 * 893 * BUS_CONFIG_ALL: 894 * Enumerate all the instances of all the possible children (seen before 895 * and never seen before). 896 * 897 * BUS_CONFIG_DRIVER: 898 * Enumerate all the instances of a particular driver. 899 */ 900 static int 901 xpvd_bus_config(dev_info_t *parent, uint_t flag, ddi_bus_config_op_t op, 902 void *arg, dev_info_t **childp) 903 { 904 int circ; 905 char *cname = NULL; 906 907 ndi_devi_enter(parent, &circ); 908 909 switch (op) { 910 case BUS_CONFIG_ONE: { 911 xendev_devclass_t devclass; 912 domid_t dom; 913 int vdev; 914 915 if (!i_xpvd_parse_devname(arg, &devclass, &dom, &vdev)) { 916 ndi_devi_exit(parent, circ); 917 return (NDI_FAILURE); 918 } 919 920 *childp = xvdi_find_dev(parent, devclass, dom, vdev); 921 if (*childp == NULL) 922 *childp = xvdi_create_dev(parent, devclass, dom, vdev); 923 924 ndi_devi_exit(parent, circ); 925 926 if (*childp == NULL) 927 return (NDI_FAILURE); 928 else 929 return (ndi_busop_bus_config(parent, flag, 930 op, arg, childp, 0)); 931 } 932 933 case BUS_CONFIG_DRIVER: { 934 xendev_devclass_t devclass = XEN_INVAL; 935 936 cname = ddi_major_to_name((major_t)(uintptr_t)arg); 937 if (cname != NULL) 938 devclass = xendev_nodename_to_devclass(cname); 939 940 if (devclass == XEN_INVAL) { 941 ndi_devi_exit(parent, circ); 942 return (NDI_FAILURE); 943 } else { 944 xendev_enum_class(parent, devclass); 945 ndi_devi_exit(parent, circ); 946 return (ndi_busop_bus_config(parent, flag, op, 947 arg, childp, 0)); 948 } 949 /* NOTREACHED */ 950 } 951 952 case BUS_CONFIG_ALL: 953 xendev_enum_all(parent, B_FALSE); 954 ndi_devi_exit(parent, circ); 955 956 return (ndi_busop_bus_config(parent, flag, op, 957 arg, childp, 0)); 958 959 default: 960 ndi_devi_exit(parent, circ); 961 return (NDI_FAILURE); 962 } 963 } 964 965 /*ARGSUSED*/ 966 static int 967 xpvd_get_eventcookie(dev_info_t *dip, dev_info_t *rdip, 968 char *eventname, ddi_eventcookie_t *cookie) 969 { 970 return (ndi_event_retrieve_cookie(xpvd_ndi_event_handle, 971 rdip, eventname, cookie, NDI_EVENT_NOPASS)); 972 } 973 974 /*ARGSUSED*/ 975 static int 976 xpvd_add_eventcall(dev_info_t *dip, dev_info_t *rdip, 977 ddi_eventcookie_t cookie, void (*callback)(dev_info_t *dip, 978 ddi_eventcookie_t cookie, void *arg, void *bus_impldata), 979 void *arg, ddi_callback_id_t *cb_id) 980 { 981 return (ndi_event_add_callback(xpvd_ndi_event_handle, 982 rdip, cookie, callback, arg, NDI_SLEEP, cb_id)); 983 } 984 985 /*ARGSUSED*/ 986 static int 987 xpvd_remove_eventcall(dev_info_t *dip, ddi_callback_id_t cb_id) 988 { 989 return (ndi_event_remove_callback(xpvd_ndi_event_handle, 990 cb_id)); 991 } 992 993 /*ARGSUSED*/ 994 static int 995 xpvd_post_event(dev_info_t *dip, dev_info_t *rdip, 996 ddi_eventcookie_t cookie, void *bus_impldata) 997 { 998 return (ndi_event_run_callbacks(xpvd_ndi_event_handle, rdip, 999 cookie, bus_impldata)); 1000 } 1001