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 * ISA bus nexus driver 28 */ 29 30 #include <sys/types.h> 31 #include <sys/cmn_err.h> 32 #include <sys/conf.h> 33 #include <sys/modctl.h> 34 #include <sys/autoconf.h> 35 #include <sys/errno.h> 36 #include <sys/debug.h> 37 #include <sys/kmem.h> 38 #include <sys/psm.h> 39 #include <sys/ddidmareq.h> 40 #include <sys/ddi_impldefs.h> 41 #include <sys/dma_engine.h> 42 #include <sys/ddi.h> 43 #include <sys/sunddi.h> 44 #include <sys/sunndi.h> 45 #include <sys/acpi/acpi_enum.h> 46 #if defined(__xpv) 47 #include <sys/hypervisor.h> 48 #include <sys/evtchn_impl.h> 49 #endif 50 51 52 extern int isa_resource_setup(void); 53 static char USED_RESOURCES[] = "used-resources"; 54 static void isa_alloc_nodes(dev_info_t *); 55 static void enumerate_BIOS_serial(dev_info_t *); 56 57 #define BIOS_DATA_AREA 0x400 58 /* 59 * #define ISA_DEBUG 1 60 */ 61 62 /* 63 * Local data 64 */ 65 static ddi_dma_lim_t ISA_dma_limits = { 66 0, /* address low */ 67 0x00ffffff, /* address high */ 68 0, /* counter max */ 69 1, /* burstsize */ 70 DMA_UNIT_8, /* minimum xfer */ 71 0, /* dma speed */ 72 (uint_t)DMALIM_VER0, /* version */ 73 0x0000ffff, /* address register */ 74 0x0000ffff, /* counter register */ 75 1, /* sector size */ 76 0x00000001, /* scatter/gather list length */ 77 (uint_t)0xffffffff /* request size */ 78 }; 79 80 static ddi_dma_attr_t ISA_dma_attr = { 81 DMA_ATTR_V0, 82 (unsigned long long)0, 83 (unsigned long long)0x00ffffff, 84 0x0000ffff, 85 1, 86 1, 87 1, 88 (unsigned long long)0xffffffff, 89 (unsigned long long)0x0000ffff, 90 1, 91 1, 92 0 93 }; 94 95 96 /* 97 * Config information 98 */ 99 100 static int 101 isa_dma_allochdl(dev_info_t *, dev_info_t *, ddi_dma_attr_t *, 102 int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *); 103 104 static int 105 isa_dma_mctl(dev_info_t *, dev_info_t *, ddi_dma_handle_t, enum ddi_dma_ctlops, 106 off_t *, size_t *, caddr_t *, uint_t); 107 108 static int 109 isa_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, void *); 110 111 struct bus_ops isa_bus_ops = { 112 BUSO_REV, 113 i_ddi_bus_map, 114 NULL, 115 NULL, 116 NULL, 117 i_ddi_map_fault, 118 ddi_dma_map, 119 isa_dma_allochdl, 120 ddi_dma_freehdl, 121 ddi_dma_bindhdl, 122 ddi_dma_unbindhdl, 123 ddi_dma_flush, 124 ddi_dma_win, 125 isa_dma_mctl, 126 isa_ctlops, 127 ddi_bus_prop_op, 128 NULL, /* (*bus_get_eventcookie)(); */ 129 NULL, /* (*bus_add_eventcall)(); */ 130 NULL, /* (*bus_remove_eventcall)(); */ 131 NULL, /* (*bus_post_event)(); */ 132 NULL, /* (*bus_intr_ctl)(); */ 133 NULL, /* (*bus_config)(); */ 134 NULL, /* (*bus_unconfig)(); */ 135 NULL, /* (*bus_fm_init)(); */ 136 NULL, /* (*bus_fm_fini)(); */ 137 NULL, /* (*bus_fm_access_enter)(); */ 138 NULL, /* (*bus_fm_access_exit)(); */ 139 NULL, /* (*bus_power)(); */ 140 i_ddi_intr_ops /* (*bus_intr_op)(); */ 141 }; 142 143 144 static int isa_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 145 146 /* 147 * Internal isa ctlops support routines 148 */ 149 static int isa_initchild(dev_info_t *child); 150 151 struct dev_ops isa_ops = { 152 DEVO_REV, /* devo_rev, */ 153 0, /* refcnt */ 154 ddi_no_info, /* info */ 155 nulldev, /* identify */ 156 nulldev, /* probe */ 157 isa_attach, /* attach */ 158 nodev, /* detach */ 159 nodev, /* reset */ 160 (struct cb_ops *)0, /* driver operations */ 161 &isa_bus_ops /* bus operations */ 162 163 }; 164 165 /* 166 * Module linkage information for the kernel. 167 */ 168 169 static struct modldrv modldrv = { 170 &mod_driverops, /* Type of module. This is ISA bus driver */ 171 "isa nexus driver for 'ISA'", 172 &isa_ops, /* driver ops */ 173 }; 174 175 static struct modlinkage modlinkage = { 176 MODREV_1, 177 &modldrv, 178 NULL 179 }; 180 181 int 182 _init(void) 183 { 184 return (mod_install(&modlinkage)); 185 } 186 187 int 188 _fini(void) 189 { 190 return (mod_remove(&modlinkage)); 191 } 192 193 int 194 _info(struct modinfo *modinfop) 195 { 196 return (mod_info(&modlinkage, modinfop)); 197 } 198 199 static int 200 isa_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 201 { 202 int rval; 203 204 #if defined(__xpv) 205 /* 206 * don't allow isa to attach in domU. this can happen if someone sets 207 * the console wrong, etc. ISA devices assume the H/W is there and 208 * will cause the domU to panic. 209 */ 210 if (!DOMAIN_IS_INITDOMAIN(xen_info)) { 211 return (DDI_FAILURE); 212 } 213 #endif 214 215 if (cmd != DDI_ATTACH) 216 return (DDI_FAILURE); 217 218 if ((rval = i_dmae_init(devi)) == DDI_SUCCESS) { 219 ddi_report_dev(devi); 220 /* 221 * Enumerate children -- invoking ACPICA 222 * This is normally in bus_config(), but we need this 223 * to happen earlier to boot. 224 */ 225 isa_alloc_nodes(devi); 226 } 227 return (rval); 228 } 229 230 static int 231 isa_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_attr_t *dma_attr, 232 int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep) 233 { 234 ddi_dma_attr_merge(dma_attr, &ISA_dma_attr); 235 return (ddi_dma_allochdl(dip, rdip, dma_attr, waitfp, arg, handlep)); 236 } 237 238 static int 239 isa_dma_mctl(dev_info_t *dip, dev_info_t *rdip, 240 ddi_dma_handle_t handle, enum ddi_dma_ctlops request, 241 off_t *offp, size_t *lenp, caddr_t *objp, uint_t flags) 242 { 243 int rval; 244 ddi_dma_lim_t defalt; 245 int arg = (int)(uintptr_t)objp; 246 247 switch (request) { 248 249 case DDI_DMA_E_PROG: 250 return (i_dmae_prog(rdip, (struct ddi_dmae_req *)offp, 251 (ddi_dma_cookie_t *)lenp, arg)); 252 253 case DDI_DMA_E_ACQUIRE: 254 return (i_dmae_acquire(rdip, arg, (int(*)(caddr_t))offp, 255 (caddr_t)lenp)); 256 257 case DDI_DMA_E_FREE: 258 return (i_dmae_free(rdip, arg)); 259 260 case DDI_DMA_E_STOP: 261 i_dmae_stop(rdip, arg); 262 return (DDI_SUCCESS); 263 264 case DDI_DMA_E_ENABLE: 265 i_dmae_enable(rdip, arg); 266 return (DDI_SUCCESS); 267 268 case DDI_DMA_E_DISABLE: 269 i_dmae_disable(rdip, arg); 270 return (DDI_SUCCESS); 271 272 case DDI_DMA_E_GETCNT: 273 i_dmae_get_chan_stat(rdip, arg, NULL, (int *)lenp); 274 return (DDI_SUCCESS); 275 276 case DDI_DMA_E_SWSETUP: 277 return (i_dmae_swsetup(rdip, (struct ddi_dmae_req *)offp, 278 (ddi_dma_cookie_t *)lenp, arg)); 279 280 case DDI_DMA_E_SWSTART: 281 i_dmae_swstart(rdip, arg); 282 return (DDI_SUCCESS); 283 284 case DDI_DMA_E_GETLIM: 285 bcopy(&ISA_dma_limits, objp, sizeof (ddi_dma_lim_t)); 286 return (DDI_SUCCESS); 287 288 case DDI_DMA_E_GETATTR: 289 bcopy(&ISA_dma_attr, objp, sizeof (ddi_dma_attr_t)); 290 return (DDI_SUCCESS); 291 292 case DDI_DMA_E_1STPTY: 293 { 294 struct ddi_dmae_req req1stpty = 295 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 296 if (arg == 0) { 297 req1stpty.der_command = DMAE_CMD_TRAN; 298 req1stpty.der_trans = DMAE_TRANS_DMND; 299 } else { 300 req1stpty.der_trans = DMAE_TRANS_CSCD; 301 } 302 return (i_dmae_prog(rdip, &req1stpty, NULL, arg)); 303 } 304 305 case DDI_DMA_IOPB_ALLOC: /* get contiguous DMA-able memory */ 306 case DDI_DMA_SMEM_ALLOC: 307 if (!offp) { 308 defalt = ISA_dma_limits; 309 offp = (off_t *)&defalt; 310 } 311 /*FALLTHROUGH*/ 312 default: 313 rval = ddi_dma_mctl(dip, rdip, handle, request, offp, 314 lenp, objp, flags); 315 } 316 return (rval); 317 } 318 319 /* 320 * Check if driver should be treated as an old pre 2.6 driver 321 */ 322 static int 323 old_driver(dev_info_t *dip) 324 { 325 extern int ignore_hardware_nodes; /* force flag from ddi_impl.c */ 326 327 if (ndi_dev_is_persistent_node(dip)) { 328 if (ignore_hardware_nodes) 329 return (1); 330 if (ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 331 "ignore-hardware-nodes", -1) != -1) 332 return (1); 333 } 334 return (0); 335 } 336 337 typedef struct { 338 uint32_t phys_hi; 339 uint32_t phys_lo; 340 uint32_t size; 341 } isa_regs_t; 342 343 /* 344 * Return non-zero if device in tree is a PnP isa device 345 */ 346 static int 347 is_pnpisa(dev_info_t *dip) 348 { 349 isa_regs_t *isa_regs; 350 int proplen, pnpisa; 351 352 if (ndi_dev_is_persistent_node(dip) == 0) 353 return (0); 354 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "reg", 355 (caddr_t)&isa_regs, &proplen) != DDI_PROP_SUCCESS) { 356 return (0); 357 } 358 pnpisa = isa_regs[0].phys_hi & 0x80000000; 359 /* 360 * free the memory allocated by ddi_getlongprop(). 361 */ 362 kmem_free(isa_regs, proplen); 363 if (pnpisa) 364 return (1); 365 else 366 return (0); 367 } 368 369 /*ARGSUSED*/ 370 static int 371 isa_ctlops(dev_info_t *dip, dev_info_t *rdip, 372 ddi_ctl_enum_t ctlop, void *arg, void *result) 373 { 374 switch (ctlop) { 375 case DDI_CTLOPS_REPORTDEV: 376 if (rdip == (dev_info_t *)0) 377 return (DDI_FAILURE); 378 cmn_err(CE_CONT, "?ISA-device: %s%d\n", 379 ddi_driver_name(rdip), ddi_get_instance(rdip)); 380 return (DDI_SUCCESS); 381 382 case DDI_CTLOPS_INITCHILD: 383 /* 384 * older drivers aren't expecting the "standard" device 385 * node format used by the hardware nodes. these drivers 386 * only expect their own properties set in their driver.conf 387 * files. so they tell us not to call them with hardware 388 * nodes by setting the property "ignore-hardware-nodes". 389 */ 390 if (old_driver((dev_info_t *)arg)) { 391 return (DDI_NOT_WELL_FORMED); 392 } 393 394 return (isa_initchild((dev_info_t *)arg)); 395 396 case DDI_CTLOPS_UNINITCHILD: 397 impl_ddi_sunbus_removechild((dev_info_t *)arg); 398 return (DDI_SUCCESS); 399 400 case DDI_CTLOPS_SIDDEV: 401 /* 402 * All ISA devices need to do confirming probes 403 * unless they are PnP ISA. 404 */ 405 if (is_pnpisa(dip)) 406 return (DDI_SUCCESS); 407 else 408 return (DDI_FAILURE); 409 410 default: 411 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 412 } 413 } 414 415 static void 416 isa_vendor(uint32_t id, char *vendor) 417 { 418 vendor[0] = '@' + ((id >> 26) & 0x1f); 419 vendor[1] = '@' + ((id >> 21) & 0x1f); 420 vendor[2] = '@' + ((id >> 16) & 0x1f); 421 vendor[3] = 0; 422 } 423 424 /* 425 * Name a child 426 */ 427 static int 428 isa_name_child(dev_info_t *child, char *name, int namelen) 429 { 430 char vendor[8]; 431 int device; 432 uint32_t serial; 433 int func; 434 int bustype; 435 uint32_t base; 436 int proplen; 437 int pnpisa = 0; 438 isa_regs_t *isa_regs; 439 440 void make_ddi_ppd(dev_info_t *, struct ddi_parent_private_data **); 441 442 /* 443 * older drivers aren't expecting the "standard" device 444 * node format used by the hardware nodes. these drivers 445 * only expect their own properties set in their driver.conf 446 * files. so they tell us not to call them with hardware 447 * nodes by setting the property "ignore-hardware-nodes". 448 */ 449 if (old_driver(child)) 450 return (DDI_FAILURE); 451 452 /* 453 * Fill in parent-private data 454 */ 455 if (ddi_get_parent_data(child) == NULL) { 456 struct ddi_parent_private_data *pdptr; 457 make_ddi_ppd(child, &pdptr); 458 ddi_set_parent_data(child, pdptr); 459 } 460 461 if (ndi_dev_is_persistent_node(child) == 0) { 462 /* 463 * For .conf nodes, generate name from parent private data 464 */ 465 name[0] = '\0'; 466 if (sparc_pd_getnreg(child) > 0) { 467 (void) snprintf(name, namelen, "%x,%x", 468 (uint_t)sparc_pd_getreg(child, 0)->regspec_bustype, 469 (uint_t)sparc_pd_getreg(child, 0)->regspec_addr); 470 } 471 return (DDI_SUCCESS); 472 } 473 474 /* 475 * For hw nodes, look up "reg" property 476 */ 477 if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg", 478 (caddr_t)&isa_regs, &proplen) != DDI_PROP_SUCCESS) { 479 return (DDI_FAILURE); 480 } 481 482 /* 483 * extract the device identifications 484 */ 485 pnpisa = isa_regs[0].phys_hi & 0x80000000; 486 if (pnpisa) { 487 isa_vendor(isa_regs[0].phys_hi, vendor); 488 device = isa_regs[0].phys_hi & 0xffff; 489 serial = isa_regs[0].phys_lo; 490 func = (isa_regs[0].size >> 24) & 0xff; 491 if (func != 0) 492 (void) snprintf(name, namelen, "pnp%s,%04x,%x,%x", 493 vendor, device, serial, func); 494 else 495 (void) snprintf(name, namelen, "pnp%s,%04x,%x", 496 vendor, device, serial); 497 } else { 498 bustype = isa_regs[0].phys_hi; 499 base = isa_regs[0].phys_lo; 500 (void) sprintf(name, "%x,%x", bustype, base); 501 } 502 503 /* 504 * free the memory allocated by ddi_getlongprop(). 505 */ 506 kmem_free(isa_regs, proplen); 507 508 return (DDI_SUCCESS); 509 } 510 511 static int 512 isa_initchild(dev_info_t *child) 513 { 514 char name[80]; 515 516 if (isa_name_child(child, name, 80) != DDI_SUCCESS) 517 return (DDI_FAILURE); 518 ddi_set_name_addr(child, name); 519 520 if (ndi_dev_is_persistent_node(child) != 0) 521 return (DDI_SUCCESS); 522 523 /* 524 * This is a .conf node, try merge properties onto a 525 * hw node with the same name. 526 */ 527 if (ndi_merge_node(child, isa_name_child) == DDI_SUCCESS) { 528 /* 529 * Return failure to remove node 530 */ 531 impl_ddi_sunbus_removechild(child); 532 return (DDI_FAILURE); 533 } 534 /* 535 * Cannot merge node, permit pseudo children 536 */ 537 return (DDI_SUCCESS); 538 } 539 540 /* 541 * called when ACPI enumeration is not used 542 */ 543 static void 544 add_known_used_resources(void) 545 { 546 /* needs to be in increasing order */ 547 int intr[] = {0x1, 0x3, 0x4, 0x6, 0x7, 0xc}; 548 int dma[] = {0x2}; 549 int io[] = {0x60, 0x1, 0x64, 0x1, 0x2f8, 0x8, 0x378, 0x8, 0x3f0, 0x10, 550 0x778, 0x4}; 551 dev_info_t *usedrdip; 552 553 usedrdip = ddi_find_devinfo(USED_RESOURCES, -1, 0); 554 555 if (usedrdip == NULL) { 556 (void) ndi_devi_alloc_sleep(ddi_root_node(), USED_RESOURCES, 557 (pnode_t)DEVI_SID_NODEID, &usedrdip); 558 } 559 560 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip, 561 "interrupts", (int *)intr, (int)(sizeof (intr) / sizeof (int))); 562 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip, 563 "io-space", (int *)io, (int)(sizeof (io) / sizeof (int))); 564 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip, 565 "dma-channels", (int *)dma, (int)(sizeof (dma) / sizeof (int))); 566 (void) ndi_devi_bind_driver(usedrdip, 0); 567 568 } 569 570 static void 571 isa_alloc_nodes(dev_info_t *isa_dip) 572 { 573 static int alloced = 0; 574 int circ, i; 575 dev_info_t *xdip; 576 577 /* hard coded isa stuff */ 578 struct regspec asy_regs[] = { 579 {1, 0x3f8, 0x8}, 580 {1, 0x2f8, 0x8} 581 }; 582 int asy_intrs[] = {0x4, 0x3}; 583 584 struct regspec i8042_regs[] = { 585 {1, 0x60, 0x1}, 586 {1, 0x64, 0x1} 587 }; 588 int i8042_intrs[] = {0x1, 0xc}; 589 char *acpi_prop; 590 int acpi_enum = 1; /* ACPI is default to be on */ 591 592 if (alloced) 593 return; 594 595 ndi_devi_enter(isa_dip, &circ); 596 if (alloced) { /* just in case we are multi-threaded */ 597 ndi_devi_exit(isa_dip, circ); 598 return; 599 } 600 alloced = 1; 601 602 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(), 603 DDI_PROP_DONTPASS, "acpi-enum", &acpi_prop) == DDI_PROP_SUCCESS) { 604 acpi_enum = strcmp("off", acpi_prop); 605 ddi_prop_free(acpi_prop); 606 } 607 608 if (acpi_enum) { 609 if (acpi_isa_device_enum(isa_dip)) { 610 ndi_devi_exit(isa_dip, circ); 611 if (isa_resource_setup() != NDI_SUCCESS) { 612 cmn_err(CE_WARN, "isa nexus: isa " 613 "resource setup failed"); 614 } 615 616 /* serial ports? */ 617 enumerate_BIOS_serial(isa_dip); 618 return; 619 } 620 cmn_err(CE_NOTE, "!Solaris did not detect ACPI BIOS"); 621 } 622 cmn_err(CE_NOTE, "!ACPI is off"); 623 624 /* serial ports */ 625 for (i = 0; i < 2; i++) { 626 #if defined(__xpv) 627 /* 628 * the hypervisor may be reserving the serial ports for console 629 * and/or debug use. Probe the irqs to see if they are 630 * available. 631 */ 632 if (ec_probe_pirq(asy_intrs[i]) == 0) 633 continue; /* in use */ 634 #endif 635 ndi_devi_alloc_sleep(isa_dip, "asy", 636 (pnode_t)DEVI_SID_NODEID, &xdip); 637 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip, 638 "reg", (int *)&asy_regs[i], 3); 639 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip, 640 "interrupts", asy_intrs[i]); 641 (void) ndi_devi_bind_driver(xdip, 0); 642 } 643 644 /* i8042 node */ 645 ndi_devi_alloc_sleep(isa_dip, "i8042", 646 (pnode_t)DEVI_SID_NODEID, &xdip); 647 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip, 648 "reg", (int *)i8042_regs, 6); 649 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip, 650 "interrupts", (int *)i8042_intrs, 2); 651 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip, 652 "unit-address", "1,60"); 653 (void) ndi_devi_bind_driver(xdip, 0); 654 655 add_known_used_resources(); 656 657 ndi_devi_exit(isa_dip, circ); 658 659 } 660 661 /* 662 * On some machines, serial port 2 isn't listed in the ACPI table. 663 * This function goes through the BIOS data area and makes sure all 664 * the serial ports there are in the dev_info tree. If any are missing, 665 * this function will add them. 666 */ 667 668 static int num_BIOS_serial = 2; /* number of BIOS serial ports to look at */ 669 670 static void 671 enumerate_BIOS_serial(dev_info_t *isa_dip) 672 { 673 ushort_t *bios_data; 674 int i; 675 dev_info_t *xdip; 676 int found; 677 int ret; 678 struct regspec *tmpregs; 679 int tmpregs_len; 680 static struct regspec tmp_asy_regs[] = { 681 {1, 0x3f8, 0x8}, 682 }; 683 static int default_asy_intrs[] = { 4, 3, 4, 3 }; 684 static size_t size = 4; 685 686 /* 687 * The first four 2-byte quantities of the BIOS data area contain 688 * the base I/O addresses of the first four serial ports. 689 */ 690 bios_data = (ushort_t *)psm_map_new((paddr_t)BIOS_DATA_AREA, size, 691 PSM_PROT_READ); 692 for (i = 0; i < num_BIOS_serial; i++) { 693 if (bios_data[i] == 0) { 694 /* no COM[i]: port */ 695 continue; 696 } 697 698 /* Look for it in the dev_info tree */ 699 found = 0; 700 for (xdip = ddi_get_child(isa_dip); xdip != NULL; 701 xdip = ddi_get_next_sibling(xdip)) { 702 if (strncmp(ddi_node_name(xdip), "asy", 3) != 0) { 703 /* skip non asy */ 704 continue; 705 } 706 707 /* Match by addr */ 708 ret = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, xdip, 709 DDI_PROP_DONTPASS, "reg", (int **)&tmpregs, 710 (uint_t *)&tmpregs_len); 711 if (ret != DDI_PROP_SUCCESS) { 712 /* error */ 713 continue; 714 } 715 716 if (tmpregs->regspec_addr == bios_data[i]) 717 found = 1; 718 /* 719 * Free the memory allocated by 720 * ddi_prop_lookup_int_array(). 721 */ 722 ddi_prop_free(tmpregs); 723 724 } 725 726 /* If not found, then add it */ 727 if (!found) { 728 ndi_devi_alloc_sleep(isa_dip, "asy", 729 (pnode_t)DEVI_SID_NODEID, &xdip); 730 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip, 731 "compatible", "PNP0500"); 732 /* This should be gotten from master file: */ 733 (void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip, 734 "model", "Standard PC COM port"); 735 tmp_asy_regs[0].regspec_addr = bios_data[i]; 736 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip, 737 "reg", (int *)&tmp_asy_regs[0], 3); 738 (void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip, 739 "interrupts", default_asy_intrs[i]); 740 (void) ndi_devi_bind_driver(xdip, 0); 741 } 742 } 743 #if defined(__xpv) 744 /* 745 * Check each serial port to see if it is in use by the hypervisor. 746 * If it is in use, then remove the node from the device tree. 747 */ 748 i = 0; 749 for (xdip = ddi_get_child(isa_dip); xdip != NULL; ) { 750 int asy_intr; 751 dev_info_t *curdip; 752 753 curdip = xdip; 754 xdip = ddi_get_next_sibling(xdip); 755 if (strncmp(ddi_node_name(curdip), "asy", 3) != 0) { 756 /* skip non asy */ 757 continue; 758 } 759 /* 760 * Check if the hypervisor is using the serial port by probing 761 * the irq and if it is using it remove the node 762 * from the device tree 763 */ 764 asy_intr = ddi_prop_get_int(DDI_DEV_T_ANY, curdip, 765 DDI_PROP_DONTPASS, "interrupts", -1); 766 if (asy_intr == -1) { 767 /* error */ 768 continue; 769 } 770 771 if (ec_probe_pirq(asy_intr)) { 772 continue; 773 } 774 ret = ndi_devi_free(curdip); 775 if (ret != DDI_SUCCESS) 776 cmn_err(CE_WARN, 777 "could not remove asy%d node", i); 778 else 779 cmn_err(CE_NOTE, "!asy%d unavailable, reserved" 780 " to hypervisor", i); 781 i++; 782 } 783 #endif /* __xpv */ 784 785 psm_unmap((caddr_t)bios_data, size); 786 } 787