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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * ********************************************************************** 30 * Extension module for PCI nexus drivers to support PCI Hot Plug feature. 31 * 32 * DESCRIPTION: 33 * This module basically implements "devctl" and Attachment Point device 34 * nodes for hot plug operations. The cb_ops functions needed for access 35 * to these device nodes are also implemented. For hotplug operations 36 * on Attachment Points it interacts with the hotplug services (HPS) 37 * framework. A pci nexus driver would simply call pcihp_init() in its 38 * attach() function and pcihp_uninit() call in its detach() function. 39 * ********************************************************************** 40 */ 41 42 #include <sys/conf.h> 43 #include <sys/kmem.h> 44 #include <sys/debug.h> 45 #include <sys/modctl.h> 46 #include <sys/autoconf.h> 47 #include <sys/ddi.h> 48 #include <sys/sunddi.h> 49 #include <sys/sunndi.h> 50 #include <sys/ddi_impldefs.h> 51 #include <sys/ndi_impldefs.h> 52 #include <sys/ddipropdefs.h> 53 #include <sys/open.h> 54 #include <sys/file.h> 55 #include <sys/stat.h> 56 #include <sys/pci.h> 57 #include <sys/pci_impl.h> 58 #include <sys/devctl.h> 59 #include <sys/hotplug/hpcsvc.h> 60 #include <sys/hotplug/pci/pcicfg.h> 61 #include <sys/hotplug/pci/pcihp.h> 62 #include <sys/sysevent.h> 63 #include <sys/sysevent/eventdefs.h> 64 #include <sys/sysevent/dr.h> 65 #include <sys/fs/dv_node.h> 66 67 /* 68 * NOTE: 69 * This module depends on PCI Configurator module (misc/pcicfg), 70 * Hot Plug Services framework module (misc/hpcsvc) and Bus Resource 71 * Allocator module (misc/busra). 72 */ 73 74 /* 75 * ************************************************************************ 76 * *** Implementation specific data structures/definitions. *** 77 * ************************************************************************ 78 */ 79 80 /* soft state */ 81 typedef enum { PCIHP_SOFT_STATE_CLOSED, PCIHP_SOFT_STATE_OPEN, 82 PCIHP_SOFT_STATE_OPEN_EXCL } pcihp_soft_state_t; 83 84 #define PCI_MAX_DEVS 32 /* max. number of devices on a pci bus */ 85 86 /* the following correspond to sysevent defined subclasses */ 87 #define PCIHP_DR_AP_STATE_CHANGE 0 88 #define PCIHP_DR_REQ 1 89 90 /* pcihp_get_soft_state() command argument */ 91 #define PCIHP_DR_NOOP 0 92 #define PCIHP_DR_BUS_CONFIGURE 1 93 #define PCIHP_DR_BUS_UNCONFIGURE 2 94 #define PCIHP_DR_SLOT_ENTER 4 95 #define PCIHP_DR_SLOT_EXIT 8 96 97 /* hot plug bus state */ 98 enum { PCIHP_BUS_INITIALIZING, PCIHP_BUS_UNCONFIGURED, 99 PCIHP_BUS_CONFIGURED }; 100 101 /* 102 * Soft state structure associated with each hot plug pci bus instance. 103 */ 104 typedef struct pcihp { 105 struct pcihp *nextp; 106 107 /* devinfo pointer to the pci bus node */ 108 dev_info_t *dip; 109 110 /* soft state flags: PCIHP_SOFT_STATE_* */ 111 pcihp_soft_state_t soft_state; 112 113 /* global mutex to serialize exclusive access to the bus */ 114 kmutex_t mutex; 115 116 /* slot information structure */ 117 struct pcihp_slotinfo { 118 hpc_slot_t slot_hdl; /* HPS slot handle */ 119 ap_rstate_t rstate; /* state of Receptacle */ 120 ap_ostate_t ostate; /* state of the Occupant */ 121 ap_condition_t condition; /* condition of the occupant */ 122 time32_t last_change; /* XXX needed? */ 123 uint32_t event_mask; /* last event mask registered */ 124 char *name; /* slot logical name */ 125 uint_t slot_flags; 126 uint16_t slot_type; /* slot type: pci or cpci */ 127 uint16_t slot_capabilities; /* 64bit, etc. */ 128 int hs_csr_location; /* Location of HS_CSR */ 129 kmutex_t slot_mutex; /* mutex to serialize hotplug */ 130 /* operations on the slot */ 131 } slotinfo[PCI_MAX_DEVS]; 132 133 /* misc. bus attributes */ 134 uint_t bus_flags; 135 uint_t bus_state; 136 uint_t slots_active; 137 } pcihp_t; 138 139 /* 140 * Bit definitions for slot_flags field: 141 * 142 * PCIHP_SLOT_AUTO_CFG_EN This flags is set if nexus can do auto 143 * configuration of hot plugged card on this slot 144 * if the hardware reports the hot plug events. 145 * 146 * PCIHP_SLOT_DISABLED Slot is disabled for hotplug operations. 147 * 148 * PCIHP_SLOT_NOT_HEALTHY HEALTHY# signal is not OK on this slot. 149 */ 150 #define PCIHP_SLOT_AUTO_CFG_EN 0x1 151 #define PCIHP_SLOT_DISABLED 0x2 152 #define PCIHP_SLOT_NOT_HEALTHY 0x4 153 #define PCIHP_SLOT_DEV_NON_HOTPLUG 0x8 154 #define PCIHP_SLOT_ENUM_INS_PENDING 0x10 155 #define PCIHP_SLOT_ENUM_EXT_PENDING 0x20 156 157 /* 158 * Bit definitions for bus_flags field: 159 * 160 * PCIHP_BUS_66MHZ Bus is running at 66Mhz. 161 */ 162 #define PCIHP_BUS_66MHZ 0x1 163 #define PCIHP_BUS_ENUM_RADIAL 0x2 164 165 #define PCIHP_DEVICES_STR "/devices" 166 167 /* 168 * control structure for tree walk during configure/unconfigure operation. 169 */ 170 struct pcihp_config_ctrl { 171 int pci_dev; /* PCI device number for the slot */ 172 uint_t flags; /* control flags (see below) */ 173 int op; /* operation: PCIHP_ONLINE or PCIHP_OFFLINE */ 174 int rv; /* return error code */ 175 dev_info_t *dip; /* dip at which the (first) error occurred */ 176 hpc_occupant_info_t *occupant; 177 }; 178 179 /* 180 * control flags for configure/unconfigure operations on the tree. 181 * 182 * PCIHP_CFG_CONTINUE continue the operation ignoring errors 183 */ 184 #define PCIHP_CFG_CONTINUE 0x1 185 186 #define PCIHP_ONLINE 1 187 #define PCIHP_OFFLINE 0 188 189 190 /* Leaf ops (hotplug controls for target devices) */ 191 static int pcihp_open(dev_t *, int, int, cred_t *); 192 static int pcihp_close(dev_t, int, int, cred_t *); 193 static int pcihp_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 194 195 #ifdef DEBUG 196 static int pcihp_debug = 0; 197 #define PCIHP_DEBUG(args) if (pcihp_debug >= 1) cmn_err args 198 #define PCIHP_DEBUG2(args) if (pcihp_debug >= 2) cmn_err args 199 #else 200 #define PCIHP_DEBUG(args) 201 #define PCIHP_DEBUG2(args) 202 #endif 203 204 /* 205 * We process ENUM# event one device at a time ie. as soon as we detect 206 * that a device has the right ENUM# conditions, we return. If the following 207 * variable is set to non-zero, we scan all the devices on the bus 208 * for ENUM# conditions. 209 */ 210 static int pcihp_enum_scan_all = 0; 211 /* 212 * If HSC driver cannot determine the board type (for example: it may not 213 * be possible to differentiate between a Basic Hotswap, Non Hotswap or 214 * Non-friendly Full hotswap board), the default board type is assigned 215 * to be as defined by the following variable. 216 */ 217 static int pcihp_cpci_board_type = HPC_BOARD_CPCI_NON_HS; 218 static int pcihp_cpci_led_blink = 30; 219 /* 220 * It was noted that the blue LED when written on/off would cause INS/EXT 221 * bit to be set causing an extra interrupt. Although the cPCI specifications 222 * does not imply this, this behavior is seen with some FHS silicons. 223 * Also, handling the INS/EXT bit would control the LED being On/Off. 224 * Until the behavior is confirmed, this flag could be used to enable or 225 * disable handling the LED. 226 * 0 means the silicons handles the LED behavior via the INS/EXT bit. 227 * 1 means the software must explicitly do the LED behavior. 228 */ 229 static int pcihp_cpci_blue_led = 1; 230 231 /* static functions */ 232 static pcihp_t *pcihp_create_soft_state(dev_info_t *dip); 233 static void pcihp_destroy_soft_state(dev_info_t *dip); 234 static pcihp_t *pcihp_get_soft_state(dev_info_t *dip, int cmd, int *rv); 235 static int pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev); 236 static int pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev); 237 static int pcihp_new_slot_state(dev_info_t *, hpc_slot_t, 238 hpc_slot_info_t *, int); 239 static int pcihp_configure(dev_info_t *, void *); 240 static bool_t pcihp_check_status(dev_info_t *); 241 static int pcihp_event_handler(caddr_t, uint_t); 242 static dev_info_t *pcihp_devi_find(dev_info_t *dip, uint_t dev, uint_t func); 243 static int pcihp_match_dev(dev_info_t *dip, void *hdl); 244 static int pcihp_get_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 245 uint8_t *); 246 static void pcihp_set_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 247 uint8_t *); 248 static int pcihp_get_hs_csr_location(ddi_acc_handle_t); 249 static int pcihp_handle_enum(pcihp_t *, int, int, int); 250 static void pcihp_hs_csr_op(pcihp_t *, int, int); 251 static int pcihp_enum_slot(pcihp_t *, struct pcihp_slotinfo *, int, int, int); 252 static int pcihp_handle_enum_extraction(pcihp_t *, int, int, int); 253 static int pcihp_handle_enum_insertion(pcihp_t *, int, int, int); 254 static int pcihp_add_dummy_reg_property(dev_info_t *, uint_t, uint_t, uint_t); 255 static int pcihp_config_setup(dev_info_t **, ddi_acc_handle_t *, 256 dev_info_t **, int, pcihp_t *); 257 static void pcihp_config_teardown(ddi_acc_handle_t *, 258 dev_info_t **, int, pcihp_t *); 259 static int pcihp_get_board_type(struct pcihp_slotinfo *); 260 /* sysevent function */ 261 static void pcihp_gen_sysevent(char *, int, int, dev_info_t *, int); 262 263 extern int pcicfg_configure(dev_info_t *, uint_t); 264 extern int pcicfg_unconfigure(dev_info_t *, uint_t); 265 266 static int pcihp_list_occupants(dev_info_t *, void *); 267 static int pcihp_indirect_map(dev_info_t *dip); 268 269 #if 0 270 static void pcihp_probe_slot_state(dev_info_t *, int, hpc_slot_state_t *); 271 #endif 272 273 int pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 274 int flags, char *name, caddr_t valuep, int *lengthp); 275 276 struct cb_ops pcihp_cb_ops = { 277 pcihp_open, /* open */ 278 pcihp_close, /* close */ 279 nodev, /* strategy */ 280 nodev, /* print */ 281 nodev, /* dump */ 282 nodev, /* read */ 283 nodev, /* write */ 284 pcihp_ioctl, /* ioctl */ 285 nodev, /* devmap */ 286 nodev, /* mmap */ 287 nodev, /* segmap */ 288 nochpoll, /* poll */ 289 pcihp_prop_op, /* cb_prop_op */ 290 NULL, /* streamtab */ 291 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 292 CB_REV, /* rev */ 293 nodev, /* int (*cb_aread)() */ 294 nodev /* int (*cb_awrite)() */ 295 }; 296 297 /* 298 * local data 299 */ 300 301 int pcihp_autocfg_enabled = 1; /* auto config is enabled by default */ 302 303 static kmutex_t pcihp_mutex; /* mutex to protect the following data */ 304 static pcihp_t *pcihp_head = NULL; 305 306 static kmutex_t pcihp_open_mutex; /* mutex to protect open/close/uninit */ 307 static int pci_devlink_flags = 0; 308 309 /* 310 * Module linkage information for the kernel. 311 */ 312 extern struct mod_ops mod_miscops; 313 static struct modlmisc modlmisc = { 314 &mod_miscops, 315 "PCI nexus hotplug support v%I%", 316 }; 317 318 static struct modlinkage modlinkage = { 319 MODREV_1, 320 &modlmisc, 321 NULL 322 }; 323 324 int 325 _init(void) 326 { 327 int error; 328 329 mutex_init(&pcihp_mutex, NULL, MUTEX_DRIVER, NULL); 330 mutex_init(&pcihp_open_mutex, NULL, MUTEX_DRIVER, NULL); 331 if ((error = mod_install(&modlinkage)) != 0) { 332 mutex_destroy(&pcihp_open_mutex); 333 mutex_destroy(&pcihp_mutex); 334 } 335 336 return (error); 337 } 338 339 int 340 _fini(void) 341 { 342 return (EBUSY); 343 } 344 345 int 346 _info(struct modinfo *modinfop) 347 { 348 return (mod_info(&modlinkage, modinfop)); 349 } 350 351 static pcihp_t * 352 pcihp_create_soft_state( 353 dev_info_t *dip) 354 { 355 pcihp_t *pcihp_p; 356 357 pcihp_p = kmem_zalloc(sizeof (struct pcihp), KM_SLEEP); 358 359 pcihp_p->dip = dip; 360 mutex_init(&pcihp_p->mutex, NULL, MUTEX_DRIVER, NULL); 361 362 mutex_enter(&pcihp_mutex); 363 pcihp_p->nextp = pcihp_head; 364 pcihp_head = pcihp_p; 365 pcihp_p->bus_state = PCIHP_BUS_INITIALIZING; 366 pcihp_p->slots_active = 0; 367 mutex_exit(&pcihp_mutex); 368 369 return (pcihp_p); 370 } 371 372 static void 373 pcihp_destroy_soft_state( 374 dev_info_t *dip) 375 { 376 pcihp_t *p; 377 pcihp_t **pp; 378 379 mutex_enter(&pcihp_mutex); 380 pp = &pcihp_head; 381 while ((p = *pp) != NULL) { 382 if (p->dip == dip) { 383 *pp = p->nextp; 384 kmem_free(p, sizeof (struct pcihp)); 385 break; 386 } 387 pp = &(p->nextp); 388 } 389 mutex_exit(&pcihp_mutex); 390 } 391 392 /* 393 * This function should be imported by client nexus drivers as their 394 * devo_getinfo() entry point. 395 */ 396 397 /* ARGSUSED */ 398 int 399 pcihp_info( 400 dev_info_t *dip, 401 ddi_info_cmd_t cmd, 402 void *arg, 403 void **result) 404 { 405 pcihp_t *pcihp_p; 406 major_t major; 407 minor_t minor; 408 int instance; 409 410 major = getmajor((dev_t)arg); 411 minor = getminor((dev_t)arg); 412 instance = PCIHP_AP_MINOR_NUM_TO_INSTANCE(minor); 413 414 switch (cmd) { 415 default: 416 return (DDI_FAILURE); 417 418 case DDI_INFO_DEVT2INSTANCE: 419 *result = (void *)(intptr_t)instance; 420 return (DDI_SUCCESS); 421 422 case DDI_INFO_DEVT2DEVINFO: 423 mutex_enter(&pcihp_mutex); 424 pcihp_p = pcihp_head; 425 while (pcihp_p != NULL) { 426 if (ddi_name_to_major(ddi_get_name(pcihp_p->dip)) == 427 major && ddi_get_instance(pcihp_p->dip) == 428 instance) { 429 *result = (void *)pcihp_p->dip; 430 mutex_exit(&pcihp_mutex); 431 return (DDI_SUCCESS); 432 } 433 pcihp_p = pcihp_p->nextp; 434 } 435 mutex_exit(&pcihp_mutex); 436 return (DDI_FAILURE); 437 } 438 } 439 440 /* 441 * This function retrieves the hot plug soft state and performs the 442 * following primitive commands while the soft state is locked: 443 * mark the bus unconfigured, increment slot activity, decrement 444 * slot activity and noop. 445 */ 446 447 /* ARGSUSED */ 448 static pcihp_t * 449 pcihp_get_soft_state( 450 dev_info_t *dip, int cmd, int *rv) 451 { 452 pcihp_t *pcihp_p; 453 454 *rv = PCIHP_SUCCESS; 455 mutex_enter(&pcihp_mutex); 456 pcihp_p = pcihp_head; 457 while (pcihp_p != NULL) { 458 if (pcihp_p->dip == dip) { 459 switch (cmd) { 460 case PCIHP_DR_BUS_UNCONFIGURE: 461 if (pcihp_p->slots_active == 0) 462 pcihp_p->bus_state = 463 PCIHP_BUS_UNCONFIGURED; 464 else 465 *rv = PCIHP_FAILURE; 466 break; 467 case PCIHP_DR_SLOT_ENTER: 468 if (pcihp_p->bus_state == 469 PCIHP_BUS_UNCONFIGURED) 470 *rv = PCIHP_FAILURE; 471 else 472 pcihp_p->slots_active++; 473 break; 474 case PCIHP_DR_SLOT_EXIT: 475 ASSERT(pcihp_p->slots_active > 0); 476 if (pcihp_p->slots_active == 0) 477 cmn_err(CE_PANIC, 478 "pcihp (%s%d): mismatched slot" 479 " activity", 480 ddi_driver_name(dip), 481 ddi_get_instance(dip)); 482 else 483 pcihp_p->slots_active--; 484 break; 485 case PCIHP_DR_NOOP: 486 break; 487 default: 488 *rv = PCIHP_FAILURE; 489 break; 490 } 491 mutex_exit(&pcihp_mutex); 492 return (pcihp_p); 493 } 494 pcihp_p = pcihp_p->nextp; 495 } 496 mutex_exit(&pcihp_mutex); 497 498 return (NULL); 499 } 500 501 /* ARGSUSED3 */ 502 static int 503 pcihp_open(dev_t *devp, int flags, int otyp, cred_t *credp) 504 { 505 dev_info_t *self; 506 pcihp_t *pcihp_p; 507 minor_t minor; 508 int pci_dev; 509 int rv; 510 511 /* 512 * Make sure the open is for the right file type. 513 */ 514 if (otyp != OTYP_CHR) 515 return (EINVAL); 516 517 mutex_enter(&pcihp_open_mutex); 518 /* 519 * Get the soft state structure. 520 */ 521 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)*devp, 522 (void **)&self) != DDI_SUCCESS) { 523 mutex_exit(&pcihp_open_mutex); 524 return (ENXIO); 525 } 526 527 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 528 ASSERT(pcihp_p != NULL); 529 530 mutex_enter(&pcihp_p->mutex); 531 532 /* 533 * If the pci_dev is valid then the minor device is an 534 * AP. Otherwise it is ":devctl" minor device. 535 */ 536 minor = getminor(*devp); 537 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(minor); 538 if (pci_dev < PCI_MAX_DEVS) { 539 struct pcihp_slotinfo *slotinfop; 540 541 slotinfop = &pcihp_p->slotinfo[pci_dev]; 542 if (slotinfop->slot_hdl == NULL) { 543 mutex_exit(&pcihp_p->mutex); 544 mutex_exit(&pcihp_open_mutex); 545 return (ENXIO); 546 } 547 } 548 549 /* 550 * Handle the open by tracking the device state. 551 * 552 * Note: Needs review w.r.t exclusive access to AP or the bus. 553 * Currently in the pci plug-in we don't use EXCL open at all 554 * so the code below implements EXCL access on the bus. 555 */ 556 557 /* enforce exclusive access to the bus */ 558 if ((pcihp_p->soft_state == PCIHP_SOFT_STATE_OPEN_EXCL) || 559 ((flags & FEXCL) && 560 (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED))) { 561 mutex_exit(&pcihp_p->mutex); 562 mutex_exit(&pcihp_open_mutex); 563 return (EBUSY); 564 } 565 566 if (flags & FEXCL) 567 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN_EXCL; 568 else 569 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN; 570 571 mutex_exit(&pcihp_p->mutex); 572 mutex_exit(&pcihp_open_mutex); 573 574 return (0); 575 } 576 577 /* ARGSUSED */ 578 static int 579 pcihp_close(dev_t dev, int flags, int otyp, cred_t *credp) 580 { 581 dev_info_t *self; 582 pcihp_t *pcihp_p; 583 int rv; 584 585 if (otyp != OTYP_CHR) 586 return (EINVAL); 587 588 mutex_enter(&pcihp_open_mutex); 589 590 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 591 (void **)&self) != DDI_SUCCESS) { 592 mutex_exit(&pcihp_open_mutex); 593 return (ENXIO); 594 } 595 596 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 597 ASSERT(pcihp_p != NULL); 598 599 mutex_enter(&pcihp_p->mutex); 600 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 601 mutex_exit(&pcihp_p->mutex); 602 603 mutex_exit(&pcihp_open_mutex); 604 605 return (0); 606 } 607 608 static int 609 pcihp_list_occupants(dev_info_t *dip, void *hdl) 610 { 611 int pci_dev; 612 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 613 pci_regspec_t *pci_rp; 614 int length; 615 major_t major; 616 617 /* 618 * Get the PCI device number information from the devinfo 619 * node. Since the node may not have the address field 620 * setup (this is done in the DDI_INITCHILD of the parent) 621 * we look up the 'reg' property to decode that information. 622 */ 623 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 624 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, 625 (uint_t *)&length) != DDI_PROP_SUCCESS) { 626 ctrl->rv = DDI_FAILURE; 627 ctrl->dip = dip; 628 return (DDI_WALK_TERMINATE); 629 } 630 631 /* get the pci device id information */ 632 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 633 634 /* 635 * free the memory allocated by ddi_prop_lookup_int_array 636 */ 637 ddi_prop_free(pci_rp); 638 639 /* 640 * Match the node for the device number of the slot. 641 */ 642 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 643 644 major = ddi_driver_major(dip); 645 646 /* 647 * If the node is not yet attached, then don't list it 648 * as an occupant. This is valid, since nothing can be 649 * consuming it until it is attached, and cfgadm will 650 * ask for the property explicitly which will cause it 651 * to be re-freshed right before checking with rcm. 652 */ 653 if ((major == -1) || !i_ddi_devi_attached(dip)) 654 return (DDI_WALK_PRUNECHILD); 655 656 /* 657 * If we have used all our occupants then print mesage 658 * and terminate walk. 659 */ 660 if (ctrl->occupant->i >= HPC_MAX_OCCUPANTS) { 661 cmn_err(CE_WARN, 662 "pcihp (%s%d): unable to list all occupants", 663 ddi_driver_name(ddi_get_parent(dip)), 664 ddi_get_instance(ddi_get_parent(dip))); 665 return (DDI_WALK_TERMINATE); 666 } 667 668 /* 669 * No need to hold the dip as ddi_walk_devs 670 * has already arranged that for us. 671 */ 672 ctrl->occupant->id[ctrl->occupant->i] = 673 kmem_alloc(sizeof (char[MAXPATHLEN]), KM_SLEEP); 674 (void) ddi_pathname(dip, 675 (char *)ctrl->occupant->id[ctrl->occupant->i]); 676 ctrl->occupant->i++; 677 } 678 679 /* 680 * continue the walk to the next sibling to look for a match 681 * or to find other nodes if this card is a multi-function card. 682 */ 683 return (DDI_WALK_PRUNECHILD); 684 } 685 686 static void 687 pcihp_create_occupant_props_nolock(dev_info_t *self, dev_t dev, int pci_dev) 688 { 689 struct pcihp_config_ctrl ctrl; 690 hpc_occupant_info_t *occupant; 691 int i; 692 693 occupant = kmem_alloc(sizeof (hpc_occupant_info_t), KM_SLEEP); 694 occupant->i = 0; 695 696 ctrl.flags = 0; 697 ctrl.dip = NULL; 698 ctrl.rv = NDI_SUCCESS; 699 ctrl.pci_dev = pci_dev; 700 ctrl.op = 55; /* should define DRYRUN */ 701 ctrl.occupant = occupant; 702 703 ddi_walk_devs(ddi_get_child(self), pcihp_list_occupants, 704 (void *)&ctrl); 705 706 if (occupant->i == 0) { 707 /* no occupants right now, need to create stub property */ 708 char *c[] = { "" }; 709 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 710 c, 1); 711 } else { 712 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 713 occupant->id, occupant->i); 714 } 715 for (i = 0; i < occupant->i; i++) { 716 kmem_free(occupant->id[i], sizeof (char[MAXPATHLEN])); 717 } 718 719 kmem_free(occupant, sizeof (hpc_occupant_info_t)); 720 } 721 722 static void 723 pcihp_create_occupant_props(dev_info_t *self, dev_t dev, int pci_dev) 724 { 725 int circular; 726 727 ndi_devi_enter(self, &circular); 728 pcihp_create_occupant_props_nolock(self, dev, pci_dev); 729 ndi_devi_exit(self, circular); 730 } 731 732 static void 733 pcihp_delete_occupant_props(dev_info_t *dip, dev_t dev) 734 { 735 if (ddi_prop_remove(dev, dip, "pci-occupant") 736 != DDI_PROP_SUCCESS) 737 return; /* add error handling */ 738 739 } 740 741 /* 742 * pcihp_ioctl: devctl hotplug controls 743 */ 744 /* ARGSUSED */ 745 static int 746 pcihp_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, 747 int *rvalp) 748 { 749 pcihp_t *pcihp_p; 750 dev_info_t *self; 751 struct devctl_iocdata *dcp; 752 uint_t bus_state; 753 int rv = 0; 754 int pci_dev; 755 struct pcihp_slotinfo *slotinfop; 756 hpc_slot_state_t rstate; 757 devctl_ap_state_t ap_state; 758 struct hpc_control_data hpc_ctrldata; 759 struct hpc_led_info led_info; 760 time_t time; 761 int state_locking; 762 int state_unlocking; 763 int rval; 764 char *pathname = NULL; 765 766 /* 767 * read devctl ioctl data before soft state retrieval 768 */ 769 if ((cmd != DEVCTL_AP_CONTROL) && 770 ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) 771 return (EFAULT); 772 773 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 774 (void **)&self) != DDI_SUCCESS) { 775 if (cmd != DEVCTL_AP_CONTROL) 776 ndi_dc_freehdl(dcp); 777 return (ENXIO); 778 } 779 780 switch (cmd) { 781 case DEVCTL_AP_INSERT: 782 case DEVCTL_AP_REMOVE: 783 case DEVCTL_AP_CONNECT: 784 case DEVCTL_AP_DISCONNECT: 785 case DEVCTL_AP_CONFIGURE: 786 case DEVCTL_AP_UNCONFIGURE: 787 case DEVCTL_AP_GETSTATE: 788 case DEVCTL_AP_CONTROL: 789 state_locking = PCIHP_DR_SLOT_ENTER; 790 state_unlocking = PCIHP_DR_SLOT_EXIT; 791 break; 792 default: 793 state_locking = PCIHP_DR_NOOP; 794 state_unlocking = PCIHP_DR_NOOP; 795 break; 796 } 797 798 pcihp_p = pcihp_get_soft_state(self, state_locking, &rval); 799 ASSERT(pcihp_p != NULL); 800 801 if (rval == PCIHP_FAILURE) { 802 (void) ddi_pathname(pcihp_p->dip, pathname); 803 PCIHP_DEBUG((CE_WARN, "Hot Plug bus %s instance is unconfigured" 804 " while slot activity is requested\n", pathname)); 805 if (cmd != DEVCTL_AP_CONTROL) 806 ndi_dc_freehdl(dcp); 807 return (EBUSY); 808 } 809 810 /* 811 * For attachment points the lower 8 bits of the minor number is the 812 * PCI device number. 813 */ 814 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 815 816 /* 817 * We can use the generic implementation for these ioctls 818 */ 819 switch (cmd) { 820 case DEVCTL_DEVICE_GETSTATE: 821 case DEVCTL_DEVICE_ONLINE: 822 case DEVCTL_DEVICE_OFFLINE: 823 case DEVCTL_BUS_GETSTATE: 824 rv = ndi_devctl_ioctl(self, cmd, arg, mode, 0); 825 ndi_dc_freehdl(dcp); 826 return (rv); 827 default: 828 break; 829 } 830 831 switch (cmd) { 832 833 case DEVCTL_DEVICE_RESET: 834 rv = ENOTSUP; 835 break; 836 837 case DEVCTL_BUS_QUIESCE: 838 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 839 if (bus_state == BUS_QUIESCED) 840 break; 841 (void) ndi_set_bus_state(self, BUS_QUIESCED); 842 break; 843 844 case DEVCTL_BUS_UNQUIESCE: 845 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 846 if (bus_state == BUS_ACTIVE) 847 break; 848 (void) ndi_set_bus_state(self, BUS_ACTIVE); 849 break; 850 851 case DEVCTL_BUS_RESET: 852 rv = ENOTSUP; 853 break; 854 855 case DEVCTL_BUS_RESETALL: 856 rv = ENOTSUP; 857 break; 858 859 case DEVCTL_AP_CONNECT: 860 case DEVCTL_AP_DISCONNECT: 861 /* 862 * CONNECT(DISCONNECT) the hot plug slot to(from) the bus. 863 * 864 * For cPCI slots this operation is a nop so the HPC 865 * driver may return success if it is a valid operation. 866 */ 867 case DEVCTL_AP_INSERT: 868 case DEVCTL_AP_REMOVE: 869 /* 870 * Prepare the slot for INSERT/REMOVE operation. 871 */ 872 873 /* 874 * check for valid request: 875 * 1. It is a hotplug slot. 876 * 2. The slot has no occupant that is in 877 * the 'configured' state. 878 */ 879 if (pci_dev >= PCI_MAX_DEVS) { 880 rv = ENXIO; 881 break; 882 } 883 slotinfop = &pcihp_p->slotinfo[pci_dev]; 884 885 mutex_enter(&slotinfop->slot_mutex); 886 887 if ((slotinfop->slot_hdl == NULL) || 888 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 889 rv = ENXIO; 890 mutex_exit(&slotinfop->slot_mutex); 891 break; 892 } 893 894 /* the slot occupant must be in the UNCONFIGURED state */ 895 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 896 rv = EINVAL; 897 mutex_exit(&slotinfop->slot_mutex); 898 break; 899 } 900 /* 901 * Call the HPC driver to perform the operation on the slot. 902 */ 903 904 switch (cmd) { 905 case DEVCTL_AP_INSERT: 906 rv = hpc_nexus_insert(slotinfop->slot_hdl, NULL, 0); 907 break; 908 case DEVCTL_AP_REMOVE: 909 rv = hpc_nexus_remove(slotinfop->slot_hdl, NULL, 0); 910 break; 911 case DEVCTL_AP_CONNECT: 912 rv = hpc_nexus_connect(slotinfop->slot_hdl, NULL, 0); 913 if (rv == HPC_SUCCESS) { 914 slotinfop->rstate = AP_RSTATE_CONNECTED; 915 916 if (drv_getparm(TIME, (void *)&time) != 917 DDI_SUCCESS) 918 slotinfop->last_change = (time_t)-1; 919 else 920 slotinfop->last_change = (time32_t)time; 921 922 slotinfop = &pcihp_p->slotinfo[pci_dev]; 923 pcihp_gen_sysevent(slotinfop->name, 924 PCIHP_DR_AP_STATE_CHANGE, 925 SE_NO_HINT, pcihp_p->dip, 926 KM_SLEEP); 927 } 928 break; 929 case DEVCTL_AP_DISCONNECT: 930 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, NULL, 0); 931 if (rv == HPC_SUCCESS) { 932 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 933 934 if (drv_getparm(TIME, (void *)&time) != 935 DDI_SUCCESS) 936 slotinfop->last_change = (time_t)-1; 937 else 938 slotinfop->last_change = (time32_t)time; 939 940 slotinfop = &pcihp_p->slotinfo[pci_dev]; 941 pcihp_gen_sysevent(slotinfop->name, 942 PCIHP_DR_AP_STATE_CHANGE, 943 SE_NO_HINT, pcihp_p->dip, 944 KM_SLEEP); 945 } 946 break; 947 } 948 mutex_exit(&slotinfop->slot_mutex); 949 950 switch (rv) { 951 case HPC_ERR_INVALID: 952 rv = ENXIO; 953 break; 954 case HPC_ERR_NOTSUPPORTED: 955 rv = ENOTSUP; 956 break; 957 case HPC_ERR_FAILED: 958 rv = EIO; 959 break; 960 } 961 962 break; 963 964 case DEVCTL_AP_CONFIGURE: 965 /* 966 * ************************************** 967 * CONFIGURE the occupant in the slot. 968 * ************************************** 969 */ 970 slotinfop = &pcihp_p->slotinfo[pci_dev]; 971 972 mutex_enter(&slotinfop->slot_mutex); 973 974 rv = pcihp_configure_ap(pcihp_p, pci_dev); 975 if (rv == HPC_SUCCESS) { 976 pcihp_gen_sysevent(slotinfop->name, 977 PCIHP_DR_AP_STATE_CHANGE, 978 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 979 pcihp_create_occupant_props(self, dev, pci_dev); 980 } 981 mutex_exit(&slotinfop->slot_mutex); 982 983 break; 984 985 case DEVCTL_AP_UNCONFIGURE: 986 /* 987 * ************************************** 988 * UNCONFIGURE the occupant in the slot. 989 * ************************************** 990 */ 991 slotinfop = &pcihp_p->slotinfo[pci_dev]; 992 993 mutex_enter(&slotinfop->slot_mutex); 994 995 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 996 997 if (rv == HPC_SUCCESS) { 998 pcihp_gen_sysevent(slotinfop->name, 999 PCIHP_DR_AP_STATE_CHANGE, 1000 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 1001 pcihp_delete_occupant_props(pcihp_p->dip, dev); 1002 } 1003 mutex_exit(&slotinfop->slot_mutex); 1004 1005 break; 1006 1007 case DEVCTL_AP_GETSTATE: 1008 { 1009 int mutex_held; 1010 1011 /* 1012 * return the state of Attachment Point. 1013 * 1014 * If the occupant is in UNCONFIGURED state then 1015 * we should get the receptacle state from the 1016 * HPC driver because the receptacle state 1017 * maintained in the nexus may not be accurate. 1018 */ 1019 1020 /* 1021 * check for valid request: 1022 * 1. It is a hotplug slot. 1023 */ 1024 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1025 1026 /* try to acquire the slot mutex */ 1027 mutex_held = mutex_tryenter(&slotinfop->slot_mutex); 1028 1029 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1030 rv = ENXIO; 1031 if (mutex_held) { 1032 mutex_exit(&slotinfop->slot_mutex); 1033 } 1034 break; 1035 } 1036 1037 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 1038 if (hpc_nexus_control(slotinfop->slot_hdl, 1039 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1040 rv = EIO; 1041 if (mutex_held) 1042 mutex_exit(&slotinfop->slot_mutex); 1043 break; 1044 } 1045 slotinfop->rstate = (ap_rstate_t)rstate; 1046 } 1047 1048 ap_state.ap_rstate = slotinfop->rstate; 1049 ap_state.ap_ostate = slotinfop->ostate; 1050 ap_state.ap_condition = slotinfop->condition; 1051 ap_state.ap_last_change = slotinfop->last_change; 1052 ap_state.ap_error_code = 0; /* XXX */ 1053 if (mutex_held) 1054 ap_state.ap_in_transition = 0; /* AP is not busy */ 1055 else 1056 ap_state.ap_in_transition = 1; /* AP is busy */ 1057 1058 if (mutex_held) 1059 mutex_exit(&slotinfop->slot_mutex); 1060 1061 /* copy the return-AP-state information to the user space */ 1062 if (ndi_dc_return_ap_state(&ap_state, dcp) != NDI_SUCCESS) 1063 rv = EFAULT; 1064 1065 break; 1066 1067 } 1068 case DEVCTL_AP_CONTROL: 1069 /* 1070 * HPC control functions: 1071 * HPC_CTRL_ENABLE_SLOT/HPC_CTRL_DISABLE_SLOT 1072 * Changes the state of the slot and preserves 1073 * the state across the reboot. 1074 * HPC_CTRL_ENABLE_AUTOCFG/HPC_CTRL_DISABLE_AUTOCFG 1075 * Enables or disables the auto configuration 1076 * of hot plugged occupant if the hardware 1077 * supports notification of the hot plug 1078 * events. 1079 * HPC_CTRL_GET_LED_STATE/HPC_CTRL_SET_LED_STATE 1080 * Controls the state of an LED. 1081 * HPC_CTRL_GET_SLOT_INFO 1082 * Get slot information data structure 1083 * (hpc_slot_info_t). 1084 * HPC_CTRL_GET_BOARD_TYPE 1085 * Get board type information (hpc_board_type_t). 1086 * HPC_CTRL_GET_CARD_INFO 1087 * Get card information (hpc_card_info_t). 1088 * 1089 * These control functions are used by the cfgadm plug-in 1090 * to implement "-x" and "-v" options. 1091 */ 1092 1093 /* copy user ioctl data first */ 1094 #ifdef _MULTI_DATAMODEL 1095 if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) { 1096 struct hpc_control32_data hpc_ctrldata32; 1097 1098 if (copyin((void *)arg, (void *)&hpc_ctrldata32, 1099 sizeof (struct hpc_control32_data)) != 0) { 1100 rv = EFAULT; 1101 break; 1102 } 1103 hpc_ctrldata.cmd = hpc_ctrldata32.cmd; 1104 hpc_ctrldata.data = 1105 (void *)(intptr_t)hpc_ctrldata32.data; 1106 } 1107 #else 1108 if (copyin((void *)arg, (void *)&hpc_ctrldata, 1109 sizeof (struct hpc_control_data)) != 0) { 1110 rv = EFAULT; 1111 break; 1112 } 1113 #endif 1114 1115 /* 1116 * check for valid request: 1117 * 1. It is a hotplug slot. 1118 */ 1119 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1120 1121 mutex_enter(&slotinfop->slot_mutex); 1122 1123 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1124 rv = ENXIO; 1125 mutex_exit(&slotinfop->slot_mutex); 1126 break; 1127 } 1128 1129 switch (hpc_ctrldata.cmd) { 1130 1131 case HPC_CTRL_GET_LED_STATE: 1132 /* copy the led info from the user space */ 1133 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1134 sizeof (hpc_led_info_t)) != 0) { 1135 rv = EFAULT; 1136 break; 1137 } 1138 1139 /* get the state of LED information */ 1140 if (hpc_nexus_control(slotinfop->slot_hdl, 1141 HPC_CTRL_GET_LED_STATE, (caddr_t)&led_info) != 0) { 1142 1143 if (rv != ENOTSUP) 1144 rv = EIO; 1145 1146 break; 1147 } 1148 1149 /* copy the led info to the user space */ 1150 if (copyout((void *)&led_info, hpc_ctrldata.data, 1151 sizeof (hpc_led_info_t)) != 0) { 1152 rv = EFAULT; 1153 break; 1154 } 1155 1156 break; 1157 1158 case HPC_CTRL_SET_LED_STATE: 1159 /* copy the led info from the user space */ 1160 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1161 sizeof (hpc_led_info_t)) != 0) { 1162 rv = EFAULT; 1163 break; 1164 } 1165 1166 /* set the state of an LED */ 1167 rv = hpc_nexus_control(slotinfop->slot_hdl, 1168 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 1169 1170 /* 1171 * If the Hotswap Controller does not support 1172 * LED management (as you would find typically 1173 * in the cPCI industry), then we handle the 1174 * blue LED on/off/blink operations, just in 1175 * case it helps slot identification. 1176 */ 1177 if ((rv == HPC_ERR_NOTSUPPORTED) && 1178 (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) { 1179 if (led_info.led != HPC_ATTN_LED) 1180 break; 1181 1182 switch (led_info.state) { 1183 case HPC_LED_OFF: 1184 pcihp_hs_csr_op(pcihp_p, 1185 pci_dev, 1186 HPC_EVENT_SLOT_BLUE_LED_OFF); 1187 rv = 0; 1188 break; 1189 case HPC_LED_ON: 1190 /* 1191 * Please note that leaving 1192 * LED ON could be dangerous 1193 * as it means it is Ok to 1194 * remove the board, which 1195 * is not what we want to 1196 * convey. So it is upto the 1197 * user to take care of this 1198 * situation and usage. 1199 * 1200 * Normally, a Blink command 1201 * is more appropriate for 1202 * identifying a board. 1203 */ 1204 pcihp_hs_csr_op(pcihp_p, 1205 pci_dev, 1206 HPC_EVENT_SLOT_BLUE_LED_ON); 1207 rv = 0; 1208 break; 1209 case HPC_LED_BLINK: 1210 { 1211 int bl; 1212 1213 for (bl = 0; bl < 2; bl++) { 1214 pcihp_hs_csr_op(pcihp_p, 1215 pci_dev, 1216 HPC_EVENT_SLOT_BLUE_LED_ON); 1217 delay(pcihp_cpci_led_blink); 1218 pcihp_hs_csr_op(pcihp_p, 1219 pci_dev, 1220 HPC_EVENT_SLOT_BLUE_LED_OFF); 1221 delay(pcihp_cpci_led_blink); 1222 } 1223 rv = 0; 1224 break; 1225 } 1226 default: 1227 break; 1228 } 1229 } 1230 1231 if (rv == HPC_ERR_FAILED) 1232 rv = EIO; 1233 break; 1234 1235 case HPC_CTRL_ENABLE_SLOT: 1236 1237 /* 1238 * If slot already enabled, do not send a duplicate 1239 * control message to the HPC driver. 1240 */ 1241 if ((slotinfop->slot_flags & PCIHP_SLOT_DISABLED) == 0) 1242 break; 1243 1244 /* tell the HPC driver also */ 1245 if (hpc_nexus_control(slotinfop->slot_hdl, 1246 HPC_CTRL_ENABLE_SLOT, NULL) != HPC_SUCCESS) { 1247 rv = EIO; 1248 break; 1249 } 1250 1251 /* 1252 * Enable the slot for hotplug operations. 1253 */ 1254 slotinfop->slot_flags &= ~PCIHP_SLOT_DISABLED; 1255 1256 slotinfop->condition = AP_COND_UNKNOWN; 1257 1258 /* XXX need to preserve this state across reboot? */ 1259 1260 break; 1261 1262 case HPC_CTRL_DISABLE_SLOT: 1263 1264 /* Do not disable if occupant configured */ 1265 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1266 rv = EAGAIN; 1267 break; 1268 } 1269 1270 /* tell the HPC driver also */ 1271 if (hpc_nexus_control(slotinfop->slot_hdl, 1272 HPC_CTRL_DISABLE_SLOT, NULL) != HPC_SUCCESS) { 1273 rv = EIO; 1274 break; 1275 } 1276 1277 /* 1278 * Disable the slot for hotplug operations. 1279 */ 1280 slotinfop->slot_flags |= PCIHP_SLOT_DISABLED; 1281 1282 slotinfop->condition = AP_COND_UNUSABLE; 1283 1284 /* XXX need to preserve this state across reboot? */ 1285 1286 break; 1287 1288 case HPC_CTRL_ENABLE_AUTOCFG: 1289 /* 1290 * Enable auto configuration on this slot. 1291 */ 1292 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 1293 1294 /* tell the HPC driver also */ 1295 (void) hpc_nexus_control(slotinfop->slot_hdl, 1296 HPC_CTRL_ENABLE_AUTOCFG, NULL); 1297 1298 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1299 pcihp_hs_csr_op(pcihp_p, pci_dev, 1300 HPC_EVENT_ENABLE_ENUM); 1301 break; 1302 1303 case HPC_CTRL_DISABLE_AUTOCFG: 1304 /* 1305 * Disable auto configuration on this slot. 1306 */ 1307 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 1308 1309 /* tell the HPC driver also */ 1310 (void) hpc_nexus_control(slotinfop->slot_hdl, 1311 HPC_CTRL_DISABLE_AUTOCFG, NULL); 1312 1313 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1314 pcihp_hs_csr_op(pcihp_p, pci_dev, 1315 HPC_EVENT_DISABLE_ENUM); 1316 break; 1317 1318 case HPC_CTRL_GET_BOARD_TYPE: 1319 { 1320 hpc_board_type_t board_type; 1321 1322 /* 1323 * Get board type data structure, hpc_board_type_t. 1324 */ 1325 board_type = pcihp_get_board_type(slotinfop); 1326 if (board_type == -1) { 1327 rv = ENXIO; 1328 break; 1329 } 1330 1331 /* copy the board type info to the user space */ 1332 if (copyout((void *)&board_type, hpc_ctrldata.data, 1333 sizeof (hpc_board_type_t)) != 0) { 1334 rv = ENXIO; 1335 break; 1336 } 1337 1338 break; 1339 } 1340 1341 case HPC_CTRL_GET_SLOT_INFO: 1342 { 1343 hpc_slot_info_t slot_info; 1344 1345 /* 1346 * Get slot information structure, hpc_slot_info_t. 1347 */ 1348 slot_info.version = HPC_SLOT_INFO_VERSION; 1349 slot_info.slot_type = slotinfop->slot_type; 1350 slot_info.pci_slot_capabilities = 1351 slotinfop->slot_capabilities; 1352 slot_info.pci_dev_num = (uint16_t)pci_dev; 1353 (void) strcpy(slot_info.pci_slot_name, slotinfop->name); 1354 1355 /* copy the slot info structure to the user space */ 1356 if (copyout((void *)&slot_info, hpc_ctrldata.data, 1357 sizeof (hpc_slot_info_t)) != 0) { 1358 rv = EFAULT; 1359 break; 1360 } 1361 1362 break; 1363 } 1364 1365 case HPC_CTRL_GET_CARD_INFO: 1366 { 1367 hpc_card_info_t card_info; 1368 ddi_acc_handle_t handle; 1369 dev_info_t *cdip; 1370 1371 /* 1372 * Get card information structure, hpc_card_info_t. 1373 */ 1374 1375 /* verify that the card is configured */ 1376 if ((slotinfop->ostate != AP_OSTATE_CONFIGURED) || 1377 ((cdip = pcihp_devi_find(self, 1378 pci_dev, 0)) == NULL)) { 1379 /* 1380 * either the card is not present or 1381 * it is not configured. 1382 */ 1383 rv = ENXIO; 1384 break; 1385 } 1386 1387 /* 1388 * If declared failed, don't allow Config operations. 1389 * Otherwise, if good or failing, it is assumed Ok 1390 * to get config data. 1391 */ 1392 if (slotinfop->condition == AP_COND_FAILED) { 1393 rv = EIO; 1394 break; 1395 } 1396 1397 /* get the information from the PCI config header */ 1398 /* for the function 0. */ 1399 if (pci_config_setup(cdip, &handle) != DDI_SUCCESS) { 1400 rv = EIO; 1401 break; 1402 } 1403 card_info.prog_class = pci_config_get8(handle, 1404 PCI_CONF_PROGCLASS); 1405 card_info.base_class = pci_config_get8(handle, 1406 PCI_CONF_BASCLASS); 1407 card_info.sub_class = pci_config_get8(handle, 1408 PCI_CONF_SUBCLASS); 1409 card_info.header_type = pci_config_get8(handle, 1410 PCI_CONF_HEADER); 1411 pci_config_teardown(&handle); 1412 1413 /* copy the card info structure to the user space */ 1414 if (copyout((void *)&card_info, hpc_ctrldata.data, 1415 sizeof (hpc_card_info_t)) != 0) { 1416 rv = EFAULT; 1417 break; 1418 } 1419 1420 break; 1421 } 1422 1423 default: 1424 rv = EINVAL; 1425 break; 1426 } 1427 1428 mutex_exit(&slotinfop->slot_mutex); 1429 1430 break; 1431 1432 default: 1433 rv = ENOTTY; 1434 } 1435 1436 if (cmd != DEVCTL_AP_CONTROL) 1437 ndi_dc_freehdl(dcp); 1438 1439 (void) pcihp_get_soft_state(self, state_unlocking, &rval); 1440 1441 return (rv); 1442 } 1443 1444 /* 1445 * ************************************** 1446 * CONFIGURE the occupant in the slot. 1447 * ************************************** 1448 */ 1449 static int 1450 pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev) 1451 { 1452 dev_info_t *self = pcihp_p->dip; 1453 int rv = HPC_SUCCESS; 1454 struct pcihp_slotinfo *slotinfop; 1455 hpc_slot_state_t rstate; 1456 struct pcihp_config_ctrl ctrl; 1457 int circular_count; 1458 time_t time; 1459 1460 /* 1461 * check for valid request: 1462 * 1. It is a hotplug slot. 1463 * 2. The receptacle is in the CONNECTED state. 1464 */ 1465 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1466 1467 1468 1469 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1470 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1471 1472 return (ENXIO); 1473 } 1474 1475 /* 1476 * If the occupant is already in (partially?) configured 1477 * state then call the ndi_devi_online() on the device 1478 * subtree(s) for this attachment point. 1479 */ 1480 1481 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1482 ctrl.flags = PCIHP_CFG_CONTINUE; 1483 ctrl.rv = NDI_SUCCESS; 1484 ctrl.dip = NULL; 1485 ctrl.pci_dev = pci_dev; 1486 ctrl.op = PCIHP_ONLINE; 1487 1488 ndi_devi_enter(self, &circular_count); 1489 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1490 (void *)&ctrl); 1491 ndi_devi_exit(self, circular_count); 1492 1493 if (ctrl.rv != NDI_SUCCESS) { 1494 /* 1495 * one or more of the devices are not 1496 * onlined. How is this to be reported? 1497 */ 1498 cmn_err(CE_WARN, 1499 "pcihp (%s%d): failed to attach one or" 1500 " more drivers for the card in the slot %s", 1501 ddi_driver_name(self), ddi_get_instance(self), 1502 slotinfop->name); 1503 /* rv = EFAULT; */ 1504 } 1505 /* tell HPC driver that the occupant is configured */ 1506 (void) hpc_nexus_control(slotinfop->slot_hdl, 1507 HPC_CTRL_DEV_CONFIGURED, NULL); 1508 1509 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1510 slotinfop->last_change = (time_t)-1; 1511 else 1512 slotinfop->last_change = (time32_t)time; 1513 1514 1515 return (rv); 1516 } 1517 1518 /* 1519 * Occupant is in the UNCONFIGURED state. 1520 */ 1521 1522 /* Check if the receptacle is in the CONNECTED state. */ 1523 if (hpc_nexus_control(slotinfop->slot_hdl, 1524 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1525 1526 return (ENXIO); 1527 } 1528 1529 if (rstate == HPC_SLOT_EMPTY) { 1530 /* error. slot is empty */ 1531 1532 return (ENXIO); 1533 } 1534 1535 if (rstate != HPC_SLOT_CONNECTED) { 1536 /* error. either the slot is empty or connect failed */ 1537 1538 return (ENXIO); 1539 } 1540 1541 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 1542 1543 /* Turn INS and LED off, and start configuration. */ 1544 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1545 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 1546 if (pcihp_cpci_blue_led) 1547 pcihp_hs_csr_op(pcihp_p, pci_dev, 1548 HPC_EVENT_SLOT_BLUE_LED_OFF); 1549 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 1550 } 1551 1552 (void) hpc_nexus_control(slotinfop->slot_hdl, 1553 HPC_CTRL_DEV_CONFIG_START, NULL); 1554 1555 /* 1556 * Call the configurator to configure the card. 1557 */ 1558 if (pcicfg_configure(self, pci_dev) != PCICFG_SUCCESS) { 1559 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1560 if (pcihp_cpci_blue_led) 1561 pcihp_hs_csr_op(pcihp_p, pci_dev, 1562 HPC_EVENT_SLOT_BLUE_LED_ON); 1563 pcihp_hs_csr_op(pcihp_p, pci_dev, 1564 HPC_EVENT_SLOT_UNCONFIGURE); 1565 } 1566 /* tell HPC driver occupant configure Error */ 1567 (void) hpc_nexus_control(slotinfop->slot_hdl, 1568 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 1569 1570 return (EIO); 1571 } 1572 1573 /* record the occupant state as CONFIGURED */ 1574 slotinfop->ostate = AP_OSTATE_CONFIGURED; 1575 slotinfop->condition = AP_COND_OK; 1576 1577 /* now, online all the devices in the AP */ 1578 ctrl.flags = PCIHP_CFG_CONTINUE; 1579 ctrl.rv = NDI_SUCCESS; 1580 ctrl.dip = NULL; 1581 ctrl.pci_dev = pci_dev; 1582 ctrl.op = PCIHP_ONLINE; 1583 1584 ndi_devi_enter(self, &circular_count); 1585 ddi_walk_devs(ddi_get_child(self), pcihp_configure, (void *)&ctrl); 1586 ndi_devi_exit(self, circular_count); 1587 1588 if (ctrl.rv != NDI_SUCCESS) { 1589 /* 1590 * one or more of the devices are not 1591 * ONLINE'd. How is this to be 1592 * reported? 1593 */ 1594 cmn_err(CE_WARN, 1595 "pcihp (%s%d): failed to attach one or" 1596 " more drivers for the card in the slot %s", 1597 ddi_driver_name(pcihp_p->dip), 1598 ddi_get_instance(pcihp_p->dip), 1599 slotinfop->name); 1600 /* rv = EFAULT; */ 1601 } 1602 /* store HS_CSR location. No events, jut a read operation. */ 1603 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1604 pcihp_hs_csr_op(pcihp_p, pci_dev, -1); 1605 1606 /* tell HPC driver that the occupant is configured */ 1607 (void) hpc_nexus_control(slotinfop->slot_hdl, 1608 HPC_CTRL_DEV_CONFIGURED, NULL); 1609 1610 1611 return (rv); 1612 } 1613 1614 /* 1615 * ************************************** 1616 * UNCONFIGURE the occupant in the slot. 1617 * ************************************** 1618 */ 1619 static int 1620 pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev) 1621 { 1622 dev_info_t *self = pcihp_p->dip; 1623 int rv = HPC_SUCCESS; 1624 struct pcihp_slotinfo *slotinfop; 1625 struct pcihp_config_ctrl ctrl; 1626 int circular_count; 1627 time_t time; 1628 1629 /* 1630 * check for valid request: 1631 * 1. It is a hotplug slot. 1632 * 2. The occupant is in the CONFIGURED state. 1633 */ 1634 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1635 1636 1637 1638 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1639 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1640 1641 return (ENXIO); 1642 } 1643 /* 1644 * The following may not need to be there, as we should 1645 * support unconfiguring of boards and free resources 1646 * even when the board is not hotswappable. But this is 1647 * the only way, we may be able to tell the system 1648 * administrator that it is not a hotswap board since 1649 * disconnect operation is never called. 1650 * This way we help the system administrator from not 1651 * accidentally removing a non hotswap board and 1652 * possibly destroying it. May be this behavior can 1653 * be a default, and can be enabled or disabled via 1654 * a global flag. 1655 */ 1656 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1657 if (slotinfop->slot_flags & PCIHP_SLOT_DEV_NON_HOTPLUG) { 1658 /* Operation unsupported if no HS board/slot */ 1659 return (ENOTSUP); 1660 } 1661 } 1662 1663 /* 1664 * If the occupant is in the CONFIGURED state then 1665 * call the configurator to unconfigure the slot. 1666 */ 1667 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1668 1669 /* 1670 * since potential state change is imminent mask 1671 * enum events to prevent the slot from being re-configured 1672 */ 1673 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 1674 1675 /* 1676 * Detach all the drivers for the devices in the 1677 * slot. Call pcihp_configure() to do this. 1678 */ 1679 ctrl.flags = 0; 1680 ctrl.rv = NDI_SUCCESS; 1681 ctrl.dip = NULL; 1682 ctrl.pci_dev = pci_dev; 1683 ctrl.op = PCIHP_OFFLINE; 1684 1685 (void) devfs_clean(self, NULL, DV_CLEAN_FORCE); 1686 ndi_devi_enter(self, &circular_count); 1687 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1688 (void *)&ctrl); 1689 ndi_devi_exit(self, circular_count); 1690 1691 if (ctrl.rv != NDI_SUCCESS) { 1692 /* 1693 * Failed to detach one or more drivers 1694 * Restore the state of drivers which 1695 * are offlined during this operation. 1696 */ 1697 ctrl.flags = 0; 1698 ctrl.rv = NDI_SUCCESS; 1699 ctrl.dip = NULL; 1700 ctrl.pci_dev = pci_dev; 1701 ctrl.op = PCIHP_ONLINE; 1702 1703 ndi_devi_enter(self, &circular_count); 1704 ddi_walk_devs(ddi_get_child(self), 1705 pcihp_configure, (void *)&ctrl); 1706 ndi_devi_exit(self, circular_count); 1707 1708 /* tell HPC driver that the occupant is Busy */ 1709 (void) hpc_nexus_control(slotinfop->slot_hdl, 1710 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1711 1712 rv = EBUSY; 1713 } else { 1714 (void) hpc_nexus_control(slotinfop->slot_hdl, 1715 HPC_CTRL_DEV_UNCONFIG_START, NULL); 1716 1717 if (pcicfg_unconfigure(self, 1718 pci_dev) == PCICFG_SUCCESS) { 1719 /* 1720 * Now that resources are freed, 1721 * clear EXT and Turn LED ON. 1722 */ 1723 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1724 pcihp_hs_csr_op(pcihp_p, pci_dev, 1725 HPC_EVENT_SLOT_UNCONFIGURE); 1726 if (pcihp_cpci_blue_led) 1727 pcihp_hs_csr_op(pcihp_p, 1728 pci_dev, 1729 HPC_EVENT_SLOT_BLUE_LED_ON); 1730 slotinfop->hs_csr_location = 0; 1731 slotinfop->slot_flags &= 1732 ~(PCIHP_SLOT_DEV_NON_HOTPLUG| 1733 PCIHP_SLOT_ENUM_EXT_PENDING); 1734 } 1735 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 1736 slotinfop->condition = AP_COND_UNKNOWN; 1737 /* 1738 * send the notification of state change 1739 * to the HPC driver. 1740 */ 1741 (void) hpc_nexus_control(slotinfop->slot_hdl, 1742 HPC_CTRL_DEV_UNCONFIGURED, 1743 NULL); 1744 } else { 1745 /* tell HPC driver occupant unconfigure Error */ 1746 (void) hpc_nexus_control(slotinfop->slot_hdl, 1747 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1748 1749 rv = EIO; 1750 } 1751 } 1752 } 1753 1754 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1755 slotinfop->last_change = (time_t)-1; 1756 else 1757 slotinfop->last_change = (time32_t)time; 1758 1759 1760 1761 /* unmask enum events again */ 1762 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 1763 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 1764 } 1765 1766 return (rv); 1767 } 1768 1769 /* 1770 * Accessor function to return pointer to the pci hotplug 1771 * cb_ops structure. 1772 */ 1773 struct cb_ops * 1774 pcihp_get_cb_ops() 1775 { 1776 return (&pcihp_cb_ops); 1777 } 1778 1779 /* 1780 * Setup function to initialize hot plug feature. Returns DDI_SUCCESS 1781 * for successful initialization, otherwise it returns DDI_FAILURE. 1782 * 1783 * It is assumed that this this function is called from the attach() 1784 * entry point of the PCI nexus driver. 1785 */ 1786 1787 int 1788 pcihp_init(dev_info_t *dip) 1789 { 1790 pcihp_t *pcihp_p; 1791 int i; 1792 caddr_t enum_data; 1793 int enum_size; 1794 int rv; 1795 1796 mutex_enter(&pcihp_open_mutex); 1797 1798 /* 1799 * Make sure that it is not already initialized. 1800 */ 1801 if (pcihp_get_soft_state(dip, PCIHP_DR_NOOP, &rv) != NULL) { 1802 cmn_err(CE_WARN, "%s%d: pcihp instance already initialized!", 1803 ddi_driver_name(dip), ddi_get_instance(dip)); 1804 goto cleanup; 1805 } 1806 1807 /* 1808 * Initialize soft state structure for the bus instance. 1809 */ 1810 if ((pcihp_p = pcihp_create_soft_state(dip)) == NULL) { 1811 cmn_err(CE_WARN, "%s%d: can't allocate pcihp structure", 1812 ddi_driver_name(dip), ddi_get_instance(dip)); 1813 goto cleanup; 1814 } 1815 1816 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 1817 /* XXX if bus is running at 66Mhz then set PCI_BUS_66MHZ bit */ 1818 pcihp_p->bus_flags = 0; /* XXX FIX IT */ 1819 1820 /* 1821 * If a platform wishes to implement Radial ENUM# routing 1822 * a property "enum-impl" must be presented to us with a 1823 * string value "radial". 1824 * This helps us not go for polling operation (default) 1825 * during a ENUM# event. 1826 */ 1827 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, 0, "enum-impl", 1828 (caddr_t)&enum_data, &enum_size) == DDI_PROP_SUCCESS) { 1829 if (strcmp(enum_data, "radial") == 0) { 1830 pcihp_p->bus_flags |= PCIHP_BUS_ENUM_RADIAL; 1831 } 1832 kmem_free(enum_data, enum_size); 1833 } 1834 1835 for (i = 0; i < PCI_MAX_DEVS; i++) { 1836 /* initialize slot mutex */ 1837 mutex_init(&pcihp_p->slotinfo[i].slot_mutex, NULL, 1838 MUTEX_DRIVER, NULL); 1839 } 1840 1841 /* 1842 * register the bus instance with the HPS framework. 1843 */ 1844 if (hpc_nexus_register_bus(dip, pcihp_new_slot_state, 0) != 0) { 1845 cmn_err(CE_WARN, "%s%d: failed to register the bus with HPS", 1846 ddi_driver_name(dip), ddi_get_instance(dip)); 1847 goto cleanup1; 1848 } 1849 1850 /* 1851 * Create the "devctl" minor for hot plug support. The minor 1852 * number for "devctl" node is in the same format as the AP 1853 * minor nodes. 1854 */ 1855 if (ddi_create_minor_node(dip, "devctl", S_IFCHR, 1856 PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), PCIHP_DEVCTL_MINOR), 1857 DDI_NT_NEXUS, 0) != DDI_SUCCESS) 1858 goto cleanup2; 1859 1860 /* 1861 * Setup resource maps for this bus node. (Note: This can 1862 * be done from the attach(9E) of the nexus itself.) 1863 */ 1864 (void) pci_resource_setup(dip); 1865 1866 pcihp_p->bus_state = PCIHP_BUS_CONFIGURED; 1867 1868 mutex_exit(&pcihp_open_mutex); 1869 1870 return (DDI_SUCCESS); 1871 1872 cleanup2: 1873 (void) hpc_nexus_unregister_bus(dip); 1874 cleanup1: 1875 for (i = 0; i < PCI_MAX_DEVS; i++) 1876 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1877 pcihp_destroy_soft_state(dip); 1878 cleanup: 1879 mutex_exit(&pcihp_open_mutex); 1880 return (DDI_FAILURE); 1881 } 1882 1883 /* 1884 * pcihp_uninit() 1885 * 1886 * The bus instance is going away, cleanup any data associated with 1887 * the management of hot plug slots. It is assumed that this function 1888 * is called from detach() routine of the PCI nexus driver. Also, 1889 * it is assumed that no devices on the bus are in the configured state. 1890 */ 1891 int 1892 pcihp_uninit(dev_info_t *dip) 1893 { 1894 pcihp_t *pcihp_p; 1895 int i, j; 1896 int rv; 1897 1898 mutex_enter(&pcihp_open_mutex); 1899 /* get a pointer to the soft state structure */ 1900 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_BUS_UNCONFIGURE, &rv); 1901 ASSERT(pcihp_p != NULL); 1902 1903 /* slot mutexes should prevent any configure/unconfigure access */ 1904 for (i = 0; i < PCI_MAX_DEVS; i++) { 1905 if (!mutex_tryenter(&pcihp_p->slotinfo[i].slot_mutex)) { 1906 for (j = 0; j < i; j++) { 1907 mutex_exit(&pcihp_p->slotinfo[j].slot_mutex); 1908 } 1909 mutex_exit(&pcihp_open_mutex); 1910 return (DDI_FAILURE); 1911 } 1912 } 1913 1914 if ((pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) || 1915 (rv == PCIHP_FAILURE)) { 1916 cmn_err(CE_WARN, "%s%d: pcihp instance is busy", 1917 ddi_driver_name(dip), ddi_get_instance(dip)); 1918 for (i = 0; i < PCI_MAX_DEVS; i++) { 1919 mutex_exit(&pcihp_p->slotinfo[i].slot_mutex); 1920 } 1921 mutex_exit(&pcihp_open_mutex); 1922 return (DDI_FAILURE); 1923 } 1924 1925 /* 1926 * Unregister the bus with the HPS. 1927 * 1928 * (Note: It is assumed that the HPS framework uninstalls 1929 * event handlers for all the hot plug slots on this bus.) 1930 */ 1931 (void) hpc_nexus_unregister_bus(dip); 1932 1933 /* Free up any kmem_alloc'd memory for slot info table. */ 1934 for (i = 0; i < PCI_MAX_DEVS; i++) { 1935 /* free up slot name strings */ 1936 if (pcihp_p->slotinfo[i].name != NULL) 1937 kmem_free(pcihp_p->slotinfo[i].name, 1938 strlen(pcihp_p->slotinfo[i].name) + 1); 1939 } 1940 1941 /* destroy slot mutexes */ 1942 for (i = 0; i < PCI_MAX_DEVS; i++) 1943 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1944 1945 ddi_remove_minor_node(dip, NULL); 1946 1947 /* free up the soft state structure */ 1948 pcihp_destroy_soft_state(dip); 1949 1950 /* 1951 * Destroy resource maps for this bus node. (Note: This can 1952 * be done from the detach(9E) of the nexus itself.) 1953 */ 1954 (void) pci_resource_destroy(dip); 1955 1956 mutex_exit(&pcihp_open_mutex); 1957 1958 return (DDI_SUCCESS); 1959 } 1960 1961 /* 1962 * pcihp_new_slot_state() 1963 * 1964 * This function is called by the HPS when it finds a hot plug 1965 * slot is added or being removed from the hot plug framework. 1966 * It returns 0 for success and HPC_ERR_FAILED for errors. 1967 */ 1968 static int 1969 pcihp_new_slot_state(dev_info_t *dip, hpc_slot_t hdl, 1970 hpc_slot_info_t *slot_info, int slot_state) 1971 { 1972 pcihp_t *pcihp_p; 1973 struct pcihp_slotinfo *slotinfop; 1974 int pci_dev; 1975 minor_t ap_minor; 1976 major_t ap_major; 1977 int rv = 0; 1978 time_t time; 1979 int auto_enable = 1; 1980 int rval; 1981 1982 /* get a pointer to the soft state structure */ 1983 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_SLOT_ENTER, &rval); 1984 ASSERT(pcihp_p != NULL); 1985 1986 if (rval == PCIHP_FAILURE) { 1987 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 1988 " while slot activity is requested\n")); 1989 return (HPC_ERR_FAILED); 1990 } 1991 1992 pci_dev = slot_info->pci_dev_num; 1993 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1994 1995 mutex_enter(&slotinfop->slot_mutex); 1996 1997 switch (slot_state) { 1998 1999 case HPC_SLOT_ONLINE: 2000 2001 /* 2002 * Make sure the slot is not already ONLINE (paranoia?). 2003 * (Note: Should this be simply an ASSERTION?) 2004 */ 2005 if (slotinfop->slot_hdl != NULL) { 2006 PCIHP_DEBUG((CE_WARN, 2007 "pcihp (%s%d): pci slot (dev %x) already ONLINE!!", 2008 ddi_driver_name(dip), ddi_get_instance(dip), 2009 pci_dev)); 2010 rv = HPC_ERR_FAILED; 2011 break; 2012 } 2013 2014 /* 2015 * Add the hot plug slot to the bus. 2016 */ 2017 2018 /* create the AP minor node */ 2019 ap_minor = PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), pci_dev); 2020 if (ddi_create_minor_node(dip, slot_info->pci_slot_name, 2021 S_IFCHR, ap_minor, 2022 DDI_NT_PCI_ATTACHMENT_POINT, 0) == DDI_FAILURE) { 2023 cmn_err(CE_WARN, 2024 "pcihp (%s%d): ddi_create_minor_node failed" 2025 " for pci dev %x", ddi_driver_name(dip), 2026 ddi_get_instance(dip), pci_dev); 2027 rv = HPC_ERR_FAILED; 2028 break; 2029 } 2030 2031 /* save the slot handle */ 2032 slotinfop->slot_hdl = hdl; 2033 2034 /* setup event handler for all hardware events on the slot */ 2035 ap_major = ddi_name_to_major(ddi_get_name(dip)); 2036 if (hpc_install_event_handler(hdl, -1, pcihp_event_handler, 2037 (caddr_t)makedevice(ap_major, ap_minor)) != 0) { 2038 cmn_err(CE_WARN, 2039 "pcihp (%s%d): install event handler failed" 2040 " for pci dev %x", ddi_driver_name(dip), 2041 ddi_get_instance(dip), pci_dev); 2042 rv = HPC_ERR_FAILED; 2043 break; 2044 } 2045 slotinfop->event_mask = (uint32_t)0xFFFFFFFF; 2046 2047 pcihp_create_occupant_props(dip, makedevice(ap_major, 2048 ap_minor), pci_dev); 2049 2050 /* set default auto configuration enabled flag for this slot */ 2051 slotinfop->slot_flags = pcihp_autocfg_enabled; 2052 2053 /* copy the slot information */ 2054 slotinfop->name = 2055 kmem_alloc(strlen(slot_info->pci_slot_name) + 1, KM_SLEEP); 2056 (void) strcpy(slotinfop->name, slot_info->pci_slot_name); 2057 slotinfop->slot_type = slot_info->slot_type; 2058 slotinfop->hs_csr_location = 0; 2059 slotinfop->slot_capabilities = slot_info->pci_slot_capabilities; 2060 if (slot_info->slot_flags & HPC_SLOT_NO_AUTO_ENABLE) 2061 auto_enable = 0; 2062 2063 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2064 pci_devlink_flags |= (1 << pci_dev); 2065 (void) ddi_prop_update_int(DDI_DEV_T_NONE, 2066 dip, "ap-names", pci_devlink_flags); 2067 } 2068 2069 PCIHP_DEBUG((CE_NOTE, 2070 "pcihp (%s%d): pci slot (dev %x) ONLINE\n", 2071 ddi_driver_name(dip), ddi_get_instance(dip), pci_dev)); 2072 2073 /* 2074 * The slot may have an occupant that was configured 2075 * at boot time. If we find a devinfo node in the tree 2076 * for this slot (i.e pci device number) then we 2077 * record the occupant state as CONFIGURED. 2078 */ 2079 if (pcihp_devi_find(dip, pci_dev, 0) != NULL) { 2080 /* we have a configured occupant */ 2081 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2082 slotinfop->rstate = AP_RSTATE_CONNECTED; 2083 slotinfop->condition = AP_COND_OK; 2084 2085 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2086 /* this will set slot flags too. */ 2087 (void) pcihp_get_board_type(slotinfop); 2088 pcihp_hs_csr_op(pcihp_p, pci_dev, 2089 HPC_EVENT_SLOT_CONFIGURE); 2090 if (pcihp_cpci_blue_led) 2091 pcihp_hs_csr_op(pcihp_p, pci_dev, 2092 HPC_EVENT_SLOT_BLUE_LED_OFF); 2093 /* ENUM# enabled by default for cPCI devices */ 2094 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2095 slotinfop->slot_flags &= 2096 ~PCIHP_SLOT_ENUM_INS_PENDING; 2097 } 2098 2099 /* tell HPC driver that the occupant is configured */ 2100 (void) hpc_nexus_control(slotinfop->slot_hdl, 2101 HPC_CTRL_DEV_CONFIGURED, NULL); 2102 2103 /* 2104 * Tell sysevent listeners that slot has 2105 * changed state. At minimum, this is useful 2106 * when a PCI-E Chassis (containing Occupants) is 2107 * hotplugged. In this case, the following will 2108 * announce that the Occupant in the Receptacle 2109 * in the Chassis had a state-change. 2110 */ 2111 pcihp_gen_sysevent(slotinfop->name, 2112 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2113 pcihp_p->dip, KM_SLEEP); 2114 } else { 2115 struct pcihp_config_ctrl ctrl; 2116 int circular_count; 2117 2118 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 2119 slotinfop->rstate = AP_RSTATE_EMPTY; 2120 slotinfop->condition = AP_COND_UNKNOWN; 2121 2122 if (!auto_enable) { /* no further action */ 2123 break; 2124 } 2125 2126 /* 2127 * We enable power to the slot and try to 2128 * configure if there is any card present. 2129 * 2130 * Note: This case is possible if the BIOS or 2131 * firmware doesn't enable the slots during 2132 * soft reboot. 2133 */ 2134 if (hpc_nexus_connect(slotinfop->slot_hdl, 2135 NULL, 0) != HPC_SUCCESS) 2136 break; 2137 2138 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2139 pcihp_hs_csr_op(pcihp_p, pci_dev, 2140 HPC_EVENT_SLOT_CONFIGURE); 2141 if (pcihp_cpci_blue_led) 2142 pcihp_hs_csr_op(pcihp_p, pci_dev, 2143 HPC_EVENT_SLOT_BLUE_LED_OFF); 2144 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2145 slotinfop->slot_flags &= 2146 ~PCIHP_SLOT_ENUM_INS_PENDING; 2147 } 2148 2149 (void) hpc_nexus_control(slotinfop->slot_hdl, 2150 HPC_CTRL_DEV_CONFIG_START, NULL); 2151 2152 /* 2153 * Call the configurator to configure the card. 2154 */ 2155 if (pcicfg_configure(dip, pci_dev) != PCICFG_SUCCESS) { 2156 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2157 if (pcihp_cpci_blue_led) 2158 pcihp_hs_csr_op(pcihp_p, 2159 pci_dev, 2160 HPC_EVENT_SLOT_BLUE_LED_ON); 2161 pcihp_hs_csr_op(pcihp_p, pci_dev, 2162 HPC_EVENT_SLOT_UNCONFIGURE); 2163 } 2164 2165 /* tell HPC driver occupant configure Error */ 2166 (void) hpc_nexus_control(slotinfop->slot_hdl, 2167 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2168 2169 /* 2170 * call HPC driver to turn off the power for 2171 * the slot. 2172 */ 2173 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2174 NULL, 0); 2175 } else { 2176 /* record the occupant state as CONFIGURED */ 2177 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2178 slotinfop->rstate = AP_RSTATE_CONNECTED; 2179 slotinfop->condition = AP_COND_OK; 2180 2181 /* now, online all the devices in the AP */ 2182 ctrl.flags = PCIHP_CFG_CONTINUE; 2183 ctrl.rv = NDI_SUCCESS; 2184 ctrl.dip = NULL; 2185 ctrl.pci_dev = pci_dev; 2186 ctrl.op = PCIHP_ONLINE; 2187 /* 2188 * the following sets slot_flags and 2189 * hs_csr_location too. 2190 */ 2191 (void) pcihp_get_board_type(slotinfop); 2192 2193 ndi_devi_enter(dip, &circular_count); 2194 ddi_walk_devs(ddi_get_child(dip), 2195 pcihp_configure, (void *)&ctrl); 2196 ndi_devi_exit(dip, circular_count); 2197 2198 if (ctrl.rv != NDI_SUCCESS) { 2199 /* 2200 * one or more of the devices are not 2201 * ONLINE'd. How is this to be 2202 * reported? 2203 */ 2204 cmn_err(CE_WARN, 2205 "pcihp (%s%d): failed to attach" 2206 " one or more drivers for the" 2207 " card in the slot %s", 2208 ddi_driver_name(dip), 2209 ddi_get_instance(dip), 2210 slotinfop->name); 2211 } 2212 2213 /* tell HPC driver the Occupant is Configured */ 2214 (void) hpc_nexus_control(slotinfop->slot_hdl, 2215 HPC_CTRL_DEV_CONFIGURED, NULL); 2216 2217 /* 2218 * Tell sysevent listeners that slot has 2219 * changed state. At minimum, this is useful 2220 * when a PCI-E Chassis (containing Occupants) 2221 * is hotplugged. In this case, the following 2222 * will announce that the Occupant in the 2223 * Receptacle in the Chassis had a state-change. 2224 */ 2225 pcihp_gen_sysevent(slotinfop->name, 2226 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2227 pcihp_p->dip, KM_SLEEP); 2228 } 2229 } 2230 2231 break; 2232 2233 case HPC_SLOT_OFFLINE: 2234 /* 2235 * A hot plug slot is being removed from the bus. 2236 * Make sure there is no occupant configured on the 2237 * slot before removing the AP minor node. 2238 */ 2239 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2240 cmn_err(CE_WARN, "pcihp (%s%d): Card is still in " 2241 "configured state for pci dev %x", 2242 ddi_driver_name(dip), ddi_get_instance(dip), 2243 pci_dev); 2244 rv = HPC_ERR_FAILED; 2245 break; 2246 } 2247 2248 /* 2249 * If the AP device is in open state then return 2250 * error. 2251 */ 2252 if (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) { 2253 rv = HPC_ERR_FAILED; 2254 break; 2255 } 2256 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2257 pci_devlink_flags &= ~(1 << pci_dev); 2258 (void) ddi_prop_update_int(DDI_DEV_T_NONE, dip, 2259 "ap-names", pci_devlink_flags); 2260 } 2261 2262 /* remove the minor node */ 2263 ddi_remove_minor_node(dip, slotinfop->name); 2264 2265 /* free up the memory for the name string */ 2266 kmem_free(slotinfop->name, strlen(slotinfop->name) + 1); 2267 2268 /* update the slot info data */ 2269 slotinfop->name = NULL; 2270 slotinfop->slot_hdl = NULL; 2271 2272 PCIHP_DEBUG((CE_NOTE, 2273 "pcihp (%s%d): pci slot (dev %x) OFFLINE\n", 2274 ddi_driver_name(dip), ddi_get_instance(dip), 2275 slot_info->pci_dev_num)); 2276 2277 break; 2278 default: 2279 cmn_err(CE_WARN, 2280 "pcihp_new_slot_state: unknown slot_state %d", slot_state); 2281 rv = HPC_ERR_FAILED; 2282 } 2283 2284 if (rv == 0) { 2285 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 2286 slotinfop->last_change = (time_t)-1; 2287 else 2288 slotinfop->last_change = (time32_t)time; 2289 } 2290 2291 mutex_exit(&slotinfop->slot_mutex); 2292 2293 (void) pcihp_get_soft_state(dip, PCIHP_DR_SLOT_EXIT, &rval); 2294 2295 return (rv); 2296 } 2297 2298 /* 2299 * Event handler. It is assumed that this function is called from 2300 * a kernel context only. 2301 * 2302 * Parameters: 2303 * slot_arg AP minor number. 2304 * event_mask Event that occurred. 2305 */ 2306 2307 static int 2308 pcihp_event_handler(caddr_t slot_arg, uint_t event_mask) 2309 { 2310 dev_t ap_dev = (dev_t)slot_arg; 2311 dev_info_t *self; 2312 pcihp_t *pcihp_p; 2313 int pci_dev; 2314 int rv = HPC_EVENT_CLAIMED; 2315 struct pcihp_slotinfo *slotinfop; 2316 struct pcihp_config_ctrl ctrl; 2317 int circular_count; 2318 int rval; 2319 int hint; 2320 hpc_slot_state_t rstate; 2321 struct hpc_led_info led_info; 2322 2323 /* 2324 * Get the soft state structure. 2325 */ 2326 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)ap_dev, 2327 (void **)&self) != DDI_SUCCESS) 2328 return (ENXIO); 2329 2330 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_SLOT_ENTER, &rval); 2331 ASSERT(pcihp_p != NULL); 2332 2333 if (rval == PCIHP_FAILURE) { 2334 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 2335 " while slot activity is requested\n")); 2336 return (-1); 2337 } 2338 2339 /* get the PCI device number for the slot */ 2340 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(ap_dev)); 2341 2342 slotinfop = &pcihp_p->slotinfo[pci_dev]; 2343 2344 /* 2345 * All the events that may be handled in interrupt context should be 2346 * free of any mutex usage. 2347 */ 2348 switch (event_mask) { 2349 2350 case HPC_EVENT_CLEAR_ENUM: 2351 /* 2352 * Check and clear ENUM# interrupt status. This may be 2353 * called by the Hotswap controller driver when it is 2354 * operating in a full hotswap system where the 2355 * platform may not have control on globally disabling ENUM#. 2356 * In such cases, the intent is to clear interrupt and 2357 * process the interrupt in non-interrupt context. 2358 * This is the first part of the ENUM# event processing. 2359 */ 2360 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2361 " on the bus (for slot %s ?)", 2362 ddi_driver_name(pcihp_p->dip), 2363 ddi_get_instance(pcihp_p->dip), slotinfop->name)); 2364 2365 /* this is the only event coming through in interrupt context */ 2366 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_CLEAR_ENUM, 2367 KM_NOSLEEP); 2368 2369 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2370 2371 return (rv); 2372 default: 2373 break; 2374 } 2375 2376 mutex_enter(&slotinfop->slot_mutex); 2377 2378 if (hpc_nexus_control(slotinfop->slot_hdl, 2379 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) 2380 rv = HPC_ERR_FAILED; 2381 2382 slotinfop->rstate = (ap_rstate_t)rstate; 2383 2384 switch (event_mask) { 2385 2386 case HPC_EVENT_SLOT_INSERTION: 2387 /* 2388 * A card is inserted in the slot. Just report this 2389 * event and return. 2390 */ 2391 cmn_err(CE_NOTE, "pcihp (%s%d): card is inserted" 2392 " in the slot %s (pci dev %x)", 2393 ddi_driver_name(pcihp_p->dip), 2394 ddi_get_instance(pcihp_p->dip), 2395 slotinfop->name, pci_dev); 2396 2397 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2398 2399 break; 2400 2401 case HPC_EVENT_SLOT_CONFIGURE: 2402 /* 2403 * Configure the occupant that is just inserted in the slot. 2404 * The receptacle may or may not be in the connected state. If 2405 * the receptacle is not connected and the auto configuration 2406 * is enabled on this slot then connect the slot. If auto 2407 * configuration is enabled then configure the card. 2408 */ 2409 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2410 /* 2411 * auto configuration is disabled. Tell someone 2412 * like RCM about this hotplug event? 2413 */ 2414 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_CONFIGURE event" 2415 " occurred for pci dev %x (slot %s)," 2416 " Slot disabled for auto-configuration.", 2417 ddi_driver_name(pcihp_p->dip), 2418 ddi_get_instance(pcihp_p->dip), pci_dev, 2419 slotinfop->name); 2420 2421 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2422 2423 break; 2424 } 2425 2426 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2427 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_CONFIGURE event" 2428 " re-occurred for pci dev %x (slot %s),", 2429 ddi_driver_name(pcihp_p->dip), 2430 ddi_get_instance(pcihp_p->dip), pci_dev, 2431 slotinfop->name); 2432 mutex_exit(&slotinfop->slot_mutex); 2433 2434 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2435 &rval); 2436 2437 return (EAGAIN); 2438 } 2439 2440 /* 2441 * Auto configuration is enabled. First, make sure the 2442 * receptacle is in the CONNECTED state. 2443 */ 2444 if ((rv = hpc_nexus_connect(slotinfop->slot_hdl, 2445 NULL, 0)) == HPC_SUCCESS) { 2446 /* record rstate */ 2447 slotinfop->rstate = AP_RSTATE_CONNECTED; 2448 } 2449 2450 /* Clear INS and Turn LED Off and start configuring. */ 2451 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2452 pcihp_hs_csr_op(pcihp_p, pci_dev, 2453 HPC_EVENT_SLOT_CONFIGURE); 2454 if (pcihp_cpci_blue_led) 2455 pcihp_hs_csr_op(pcihp_p, pci_dev, 2456 HPC_EVENT_SLOT_BLUE_LED_OFF); 2457 } 2458 2459 (void) hpc_nexus_control(slotinfop->slot_hdl, 2460 HPC_CTRL_DEV_CONFIG_START, NULL); 2461 2462 /* 2463 * Call the configurator to configure the card. 2464 */ 2465 if (pcicfg_configure(pcihp_p->dip, pci_dev) != PCICFG_SUCCESS) { 2466 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2467 if (pcihp_cpci_blue_led) 2468 pcihp_hs_csr_op(pcihp_p, pci_dev, 2469 HPC_EVENT_SLOT_BLUE_LED_ON); 2470 pcihp_hs_csr_op(pcihp_p, pci_dev, 2471 HPC_EVENT_SLOT_UNCONFIGURE); 2472 } 2473 /* failed to configure the card */ 2474 cmn_err(CE_WARN, "pcihp (%s%d): failed to configure" 2475 " the card in the slot %s", 2476 ddi_driver_name(pcihp_p->dip), 2477 ddi_get_instance(pcihp_p->dip), 2478 slotinfop->name); 2479 /* failed to configure; disconnect the slot */ 2480 if (hpc_nexus_disconnect(slotinfop->slot_hdl, 2481 NULL, 0) == HPC_SUCCESS) { 2482 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2483 } 2484 2485 /* tell HPC driver occupant configure Error */ 2486 (void) hpc_nexus_control(slotinfop->slot_hdl, 2487 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2488 } else { 2489 /* record the occupant state as CONFIGURED */ 2490 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2491 slotinfop->condition = AP_COND_OK; 2492 2493 /* now, online all the devices in the AP */ 2494 ctrl.flags = PCIHP_CFG_CONTINUE; 2495 ctrl.rv = NDI_SUCCESS; 2496 ctrl.dip = NULL; 2497 ctrl.pci_dev = pci_dev; 2498 ctrl.op = PCIHP_ONLINE; 2499 (void) pcihp_get_board_type(slotinfop); 2500 2501 ndi_devi_enter(pcihp_p->dip, &circular_count); 2502 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2503 pcihp_configure, (void *)&ctrl); 2504 ndi_devi_exit(pcihp_p->dip, circular_count); 2505 2506 if (ctrl.rv != NDI_SUCCESS) { 2507 /* 2508 * one or more of the devices are not 2509 * ONLINE'd. How is this to be 2510 * reported? 2511 */ 2512 cmn_err(CE_WARN, 2513 "pcihp (%s%d): failed to attach one or" 2514 " more drivers for the card in" 2515 " the slot %s", 2516 ddi_driver_name(pcihp_p->dip), 2517 ddi_get_instance(pcihp_p->dip), 2518 slotinfop->name); 2519 } 2520 2521 /* tell HPC driver that the occupant is configured */ 2522 (void) hpc_nexus_control(slotinfop->slot_hdl, 2523 HPC_CTRL_DEV_CONFIGURED, NULL); 2524 2525 cmn_err(CE_NOTE, "pcihp (%s%d): card is CONFIGURED" 2526 " in the slot %s (pci dev %x)", 2527 ddi_driver_name(pcihp_p->dip), 2528 ddi_get_instance(pcihp_p->dip), 2529 slotinfop->name, pci_dev); 2530 } 2531 2532 break; 2533 2534 case HPC_EVENT_SLOT_UNCONFIGURE: 2535 /* 2536 * Unconfigure the occupant in this slot. 2537 */ 2538 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2539 /* 2540 * auto configuration is disabled. Tell someone 2541 * like RCM about this hotplug event? 2542 */ 2543 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_UNCONFIGURE event" 2544 " for pci dev %x (slot %s) ignored," 2545 " Slot disabled for auto-configuration.", 2546 ddi_driver_name(pcihp_p->dip), 2547 ddi_get_instance(pcihp_p->dip), pci_dev, 2548 slotinfop->name); 2549 2550 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2551 2552 break; 2553 } 2554 2555 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 2556 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_UNCONFIGURE " 2557 "event re-occurred for pci dev %x (slot %s),", 2558 ddi_driver_name(pcihp_p->dip), 2559 ddi_get_instance(pcihp_p->dip), pci_dev, 2560 slotinfop->name); 2561 mutex_exit(&slotinfop->slot_mutex); 2562 2563 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2564 &rval); 2565 2566 return (EAGAIN); 2567 } 2568 /* 2569 * If the occupant is in the CONFIGURED state then 2570 * call the configurator to unconfigure the slot. 2571 */ 2572 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2573 /* 2574 * Detach all the drivers for the devices in the 2575 * slot. Call pcihp_configure() to offline the 2576 * devices. 2577 */ 2578 ctrl.flags = 0; 2579 ctrl.rv = NDI_SUCCESS; 2580 ctrl.dip = NULL; 2581 ctrl.pci_dev = pci_dev; 2582 ctrl.op = PCIHP_OFFLINE; 2583 2584 (void) devfs_clean(pcihp_p->dip, NULL, DV_CLEAN_FORCE); 2585 ndi_devi_enter(pcihp_p->dip, &circular_count); 2586 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2587 pcihp_configure, (void *)&ctrl); 2588 ndi_devi_exit(pcihp_p->dip, circular_count); 2589 2590 if (ctrl.rv != NDI_SUCCESS) { 2591 /* 2592 * Failed to detach one or more drivers. 2593 * Restore the status for the drivers 2594 * which are offlined during this step. 2595 */ 2596 ctrl.flags = PCIHP_CFG_CONTINUE; 2597 ctrl.rv = NDI_SUCCESS; 2598 ctrl.dip = NULL; 2599 ctrl.pci_dev = pci_dev; 2600 ctrl.op = PCIHP_ONLINE; 2601 2602 ndi_devi_enter(pcihp_p->dip, &circular_count); 2603 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2604 pcihp_configure, (void *)&ctrl); 2605 ndi_devi_exit(pcihp_p->dip, circular_count); 2606 rv = HPC_ERR_FAILED; 2607 } else { 2608 (void) hpc_nexus_control(slotinfop->slot_hdl, 2609 HPC_CTRL_DEV_UNCONFIG_START, NULL); 2610 2611 if (pcicfg_unconfigure(pcihp_p->dip, 2612 pci_dev) == PCICFG_SUCCESS) { 2613 2614 /* Resources freed. Turn LED on. Clear EXT. */ 2615 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2616 if (pcihp_cpci_blue_led) 2617 pcihp_hs_csr_op(pcihp_p, 2618 pci_dev, 2619 HPC_EVENT_SLOT_BLUE_LED_ON); 2620 pcihp_hs_csr_op(pcihp_p, pci_dev, 2621 HPC_EVENT_SLOT_UNCONFIGURE); 2622 slotinfop->hs_csr_location = 0; 2623 slotinfop->slot_flags &= 2624 ~PCIHP_SLOT_DEV_NON_HOTPLUG; 2625 } 2626 slotinfop->ostate = 2627 AP_OSTATE_UNCONFIGURED; 2628 slotinfop->condition = AP_COND_UNKNOWN; 2629 /* 2630 * send the notification of state change 2631 * to the HPC driver. 2632 */ 2633 (void) hpc_nexus_control( 2634 slotinfop->slot_hdl, 2635 HPC_CTRL_DEV_UNCONFIGURED, NULL); 2636 /* disconnect the slot */ 2637 if (hpc_nexus_disconnect( 2638 slotinfop->slot_hdl, 2639 NULL, 0) == HPC_SUCCESS) { 2640 slotinfop->rstate = 2641 AP_RSTATE_DISCONNECTED; 2642 } 2643 2644 cmn_err(CE_NOTE, 2645 "pcihp (%s%d): card is UNCONFIGURED" 2646 " in the slot %s (pci dev %x)", 2647 ddi_driver_name(pcihp_p->dip), 2648 ddi_get_instance(pcihp_p->dip), 2649 slotinfop->name, pci_dev); 2650 } else { 2651 /* tell HPC driver occupant is Busy */ 2652 (void) hpc_nexus_control( 2653 slotinfop->slot_hdl, 2654 HPC_CTRL_DEV_UNCONFIG_FAILURE, 2655 NULL); 2656 2657 rv = HPC_ERR_FAILED; 2658 } 2659 } 2660 } 2661 2662 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2663 2664 break; 2665 2666 case HPC_EVENT_SLOT_REMOVAL: 2667 /* 2668 * Card is removed from the slot. The card must have been 2669 * unconfigured before this event. 2670 */ 2671 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2672 slotinfop->condition = AP_COND_FAILED; 2673 cmn_err(CE_WARN, "pcihp (%s%d): card is removed" 2674 " from the slot %s", 2675 ddi_driver_name(pcihp_p->dip), 2676 ddi_get_instance(pcihp_p->dip), 2677 slotinfop->name); 2678 } else { 2679 slotinfop->condition = AP_COND_UNKNOWN; 2680 cmn_err(CE_NOTE, "pcihp (%s%d): card is removed" 2681 " from the slot %s", 2682 ddi_driver_name(pcihp_p->dip), 2683 ddi_get_instance(pcihp_p->dip), 2684 slotinfop->name); 2685 } 2686 2687 slotinfop->rstate = AP_RSTATE_EMPTY; 2688 2689 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2690 2691 break; 2692 2693 case HPC_EVENT_SLOT_POWER_ON: 2694 /* 2695 * Slot is connected to the bus. i.e the card is powered 2696 * on. Are there any error conditions to be checked? 2697 */ 2698 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2699 " on in the slot %s", 2700 ddi_driver_name(pcihp_p->dip), 2701 ddi_get_instance(pcihp_p->dip), 2702 slotinfop->name)); 2703 2704 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 2705 2706 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2707 2708 break; 2709 2710 case HPC_EVENT_SLOT_POWER_OFF: 2711 /* 2712 * Slot is disconnected from the bus. i.e the card is powered 2713 * off. Are there any error conditions to be checked? 2714 */ 2715 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2716 " off in the slot %s", 2717 ddi_driver_name(pcihp_p->dip), 2718 ddi_get_instance(pcihp_p->dip), 2719 slotinfop->name)); 2720 2721 slotinfop->rstate = AP_RSTATE_DISCONNECTED; /* record rstate */ 2722 2723 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2724 2725 break; 2726 2727 case HPC_EVENT_SLOT_LATCH_SHUT: 2728 /* 2729 * Latch on the slot is closed. 2730 */ 2731 cmn_err(CE_NOTE, "pcihp (%s%d): latch is shut for the slot %s", 2732 ddi_driver_name(pcihp_p->dip), 2733 ddi_get_instance(pcihp_p->dip), 2734 slotinfop->name); 2735 2736 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2737 2738 break; 2739 2740 case HPC_EVENT_SLOT_LATCH_OPEN: 2741 /* 2742 * Latch on the slot is open. 2743 */ 2744 cmn_err(CE_NOTE, "pcihp (%s%d): latch is open for the slot %s", 2745 ddi_driver_name(pcihp_p->dip), 2746 ddi_get_instance(pcihp_p->dip), 2747 slotinfop->name); 2748 2749 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2750 2751 break; 2752 2753 case HPC_EVENT_PROCESS_ENUM: 2754 /* 2755 * HSC knows the device number of the slot where the 2756 * ENUM# was triggered. 2757 * Now finish the necessary actions to be taken on that 2758 * slot. Please note that the interrupt is already cleared. 2759 * This is the second(last) part of the ENUM# event processing. 2760 */ 2761 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): processing ENUM#" 2762 " for slot %s", 2763 ddi_driver_name(pcihp_p->dip), 2764 ddi_get_instance(pcihp_p->dip), 2765 slotinfop->name)); 2766 2767 mutex_exit(&slotinfop->slot_mutex); 2768 rv = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 2769 PCIHP_HANDLE_ENUM, KM_SLEEP); 2770 mutex_enter(&slotinfop->slot_mutex); 2771 2772 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2773 2774 break; 2775 2776 case HPC_EVENT_BUS_ENUM: 2777 /* 2778 * Same as HPC_EVENT_SLOT_ENUM as defined the PSARC doc. 2779 * This term is used for better clarity of its usage. 2780 * 2781 * ENUM signal occurred on the bus. It may be from this 2782 * slot or any other hotplug slot on the bus. 2783 * 2784 * It is NOT recommended that the hotswap controller uses 2785 * event without queuing as NDI and other DDI calls may not 2786 * necessarily be invokable in interrupt context. 2787 * Hence the hotswap controller driver should use the 2788 * CLEAR_ENUM event which returns the slot device number 2789 * and then call HPC_EVENT_PROCESS_ENUM event with queuing. 2790 * 2791 * This can be used when the hotswap controller is 2792 * implementing a polled event mechanism to do the 2793 * necessary actions in a single call. 2794 */ 2795 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2796 " on the bus (for slot %s ?)", 2797 ddi_driver_name(pcihp_p->dip), 2798 ddi_get_instance(pcihp_p->dip), 2799 slotinfop->name)); 2800 2801 mutex_exit(&slotinfop->slot_mutex); 2802 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_HANDLE_ENUM, 2803 KM_SLEEP); 2804 mutex_enter(&slotinfop->slot_mutex); 2805 2806 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2807 2808 break; 2809 2810 case HPC_EVENT_SLOT_BLUE_LED_ON: 2811 2812 /* 2813 * Request to turn Hot Swap Blue LED on. 2814 */ 2815 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn On Blue " 2816 "LED on the bus (for slot %s ?)", 2817 ddi_driver_name(pcihp_p->dip), 2818 ddi_get_instance(pcihp_p->dip), 2819 slotinfop->name)); 2820 2821 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_ON); 2822 break; 2823 2824 case HPC_EVENT_DISABLE_ENUM: 2825 /* 2826 * Disable ENUM# which disables auto configuration on this slot 2827 */ 2828 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2829 pcihp_hs_csr_op(pcihp_p, pci_dev, 2830 HPC_EVENT_DISABLE_ENUM); 2831 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 2832 } 2833 break; 2834 2835 case HPC_EVENT_ENABLE_ENUM: 2836 /* 2837 * Enable ENUM# which enables auto configuration on this slot. 2838 */ 2839 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2840 pcihp_hs_csr_op(pcihp_p, pci_dev, 2841 HPC_EVENT_ENABLE_ENUM); 2842 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2843 } 2844 break; 2845 2846 case HPC_EVENT_SLOT_BLUE_LED_OFF: 2847 2848 /* 2849 * Request to turn Hot Swap Blue LED off. 2850 */ 2851 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn Off Blue " 2852 "LED on the bus (for slot %s ?)", 2853 ddi_driver_name(pcihp_p->dip), 2854 ddi_get_instance(pcihp_p->dip), 2855 slotinfop->name)); 2856 2857 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_OFF); 2858 2859 break; 2860 2861 case HPC_EVENT_SLOT_NOT_HEALTHY: 2862 /* 2863 * HEALTHY# signal on this slot is not OK. 2864 */ 2865 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is not OK" 2866 " for this slot %s", 2867 ddi_driver_name(pcihp_p->dip), 2868 ddi_get_instance(pcihp_p->dip), 2869 slotinfop->name)); 2870 2871 /* record the state in slot_flags field */ 2872 slotinfop->slot_flags |= PCIHP_SLOT_NOT_HEALTHY; 2873 slotinfop->condition = AP_COND_FAILED; 2874 2875 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2876 2877 break; 2878 2879 case HPC_EVENT_SLOT_HEALTHY_OK: 2880 /* 2881 * HEALTHY# signal on this slot is OK now. 2882 */ 2883 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is OK now" 2884 " for this slot %s", 2885 ddi_driver_name(pcihp_p->dip), 2886 ddi_get_instance(pcihp_p->dip), 2887 slotinfop->name)); 2888 2889 /* update the state in slot_flags field */ 2890 slotinfop->slot_flags &= ~PCIHP_SLOT_NOT_HEALTHY; 2891 slotinfop->condition = AP_COND_OK; 2892 2893 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2894 2895 break; 2896 2897 case HPC_EVENT_SLOT_ATTN: 2898 /* 2899 * Attention button is pressed. 2900 */ 2901 if (((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) || 2902 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 2903 /* 2904 * either auto-conifiguration or the slot is disabled, 2905 * ignore this event. 2906 */ 2907 break; 2908 } 2909 2910 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) 2911 hint = SE_INCOMING_RES; 2912 else 2913 hint = SE_OUTGOING_RES; 2914 2915 if (ddi_getprop(DDI_DEV_T_ANY, pcihp_p->dip, DDI_PROP_DONTPASS, 2916 "inkernel-autoconfig", 0) == 0) { 2917 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_REQ, hint, 2918 pcihp_p->dip, KM_SLEEP); 2919 break; 2920 } 2921 2922 if ((slotinfop->ostate == AP_OSTATE_UNCONFIGURED) && 2923 (slotinfop->rstate != AP_RSTATE_EMPTY) && 2924 (slotinfop->condition != AP_COND_FAILED)) { 2925 if (slotinfop->rstate == AP_RSTATE_DISCONNECTED) { 2926 rv = hpc_nexus_connect(slotinfop->slot_hdl, 2927 NULL, 0); 2928 if (rv == HPC_SUCCESS) 2929 slotinfop->rstate = AP_RSTATE_CONNECTED; 2930 else 2931 break; 2932 } 2933 2934 rv = pcihp_configure_ap(pcihp_p, pci_dev); 2935 2936 } else if ((slotinfop->ostate == AP_OSTATE_CONFIGURED) && 2937 (slotinfop->rstate == AP_RSTATE_CONNECTED) && 2938 (slotinfop->condition != AP_COND_FAILED)) { 2939 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 2940 2941 if (rv != HPC_SUCCESS) 2942 break; 2943 2944 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, 2945 NULL, 0); 2946 if (rv == HPC_SUCCESS) 2947 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2948 } 2949 2950 break; 2951 2952 case HPC_EVENT_SLOT_POWER_FAULT: 2953 /* 2954 * Power fault is detected. 2955 */ 2956 cmn_err(CE_NOTE, "pcihp (%s%d): power-fault" 2957 " for this slot %s", 2958 ddi_driver_name(pcihp_p->dip), 2959 ddi_get_instance(pcihp_p->dip), 2960 slotinfop->name); 2961 2962 /* turn on ATTN led */ 2963 led_info.led = HPC_ATTN_LED; 2964 led_info.state = HPC_LED_ON; 2965 rv = hpc_nexus_control(slotinfop->slot_hdl, 2966 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 2967 2968 if (slotinfop->rstate == AP_RSTATE_CONNECTED) 2969 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2970 NULL, 0); 2971 2972 slotinfop->condition = AP_COND_FAILED; 2973 2974 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 2975 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 2976 2977 break; 2978 2979 default: 2980 cmn_err(CE_NOTE, "pcihp (%s%d): unknown event %x" 2981 " for this slot %s", 2982 ddi_driver_name(pcihp_p->dip), 2983 ddi_get_instance(pcihp_p->dip), event_mask, 2984 slotinfop->name); 2985 2986 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2987 2988 break; 2989 } 2990 2991 mutex_exit(&slotinfop->slot_mutex); 2992 2993 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2994 2995 return (rv); 2996 } 2997 2998 /* 2999 * This function is called to online or offline the devices for an 3000 * attachment point. If the PCI device number of the node matches 3001 * with the device number of the specified hot plug slot then 3002 * the operation is performed. 3003 */ 3004 static int 3005 pcihp_configure(dev_info_t *dip, void *hdl) 3006 { 3007 int pci_dev; 3008 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 3009 int rv; 3010 pci_regspec_t *pci_rp; 3011 int length; 3012 3013 /* 3014 * Get the PCI device number information from the devinfo 3015 * node. Since the node may not have the address field 3016 * setup (this is done in the DDI_INITCHILD of the parent) 3017 * we look up the 'reg' property to decode that information. 3018 */ 3019 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3020 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3021 ctrl->rv = DDI_FAILURE; 3022 ctrl->dip = dip; 3023 return (DDI_WALK_TERMINATE); 3024 } 3025 3026 /* get the pci device id information */ 3027 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3028 3029 /* 3030 * free the memory allocated by ddi_prop_lookup_int_array 3031 */ 3032 ddi_prop_free(pci_rp); 3033 3034 /* 3035 * Match the node for the device number of the slot. 3036 */ 3037 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 3038 if (ctrl->op == PCIHP_ONLINE) { 3039 /* it is CONFIGURE operation */ 3040 3041 /* skip this device if it is disabled or faulty */ 3042 if (pcihp_check_status(dip) == B_FALSE) { 3043 return (DDI_WALK_PRUNECHILD); 3044 } 3045 3046 rv = ndi_devi_online(dip, NDI_ONLINE_ATTACH|NDI_CONFIG); 3047 } else { 3048 /* 3049 * it is UNCONFIGURE operation. 3050 */ 3051 rv = ndi_devi_offline(dip, NDI_UNCONFIG); 3052 } 3053 if (rv != NDI_SUCCESS) { 3054 /* failed to attach/detach the driver(s) */ 3055 ctrl->rv = rv; 3056 ctrl->dip = dip; 3057 /* terminate the search if specified */ 3058 if (!(ctrl->flags & PCIHP_CFG_CONTINUE)) 3059 return (DDI_WALK_TERMINATE); 3060 } 3061 } 3062 3063 /* 3064 * continue the walk to the next sibling to look for a match 3065 * or to find other nodes if this card is a multi-function card. 3066 */ 3067 return (DDI_WALK_PRUNECHILD); 3068 } 3069 3070 /* 3071 * Check the device for a 'status' property. A conforming device 3072 * should have a status of "okay", "disabled", "fail", or "fail-xxx". 3073 * 3074 * Return FALSE for a conforming device that is disabled or faulted. 3075 * Return TRUE in every other case. 3076 */ 3077 static bool_t 3078 pcihp_check_status(dev_info_t *dip) 3079 { 3080 char *status_prop; 3081 bool_t rv = B_TRUE; 3082 3083 /* try to get the 'status' property */ 3084 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3085 "status", &status_prop) == DDI_PROP_SUCCESS) { 3086 3087 /* 3088 * test if the status is "disabled", "fail", or 3089 * "fail-xxx". 3090 */ 3091 if (strcmp(status_prop, "disabled") == 0) { 3092 rv = B_FALSE; 3093 PCIHP_DEBUG((CE_NOTE, 3094 "pcihp (%s%d): device is in disabled state", 3095 ddi_driver_name(dip), ddi_get_instance(dip))); 3096 } else if (strncmp(status_prop, "fail", 4) == 0) { 3097 rv = B_FALSE; 3098 cmn_err(CE_WARN, 3099 "pcihp (%s%d): device is in fault state (%s)", 3100 ddi_driver_name(dip), ddi_get_instance(dip), 3101 status_prop); 3102 } 3103 3104 ddi_prop_free(status_prop); 3105 } 3106 3107 return (rv); 3108 } 3109 3110 /* control structure used to find a device in the devinfo tree */ 3111 struct pcihp_find_ctrl { 3112 uint_t device; 3113 uint_t function; 3114 dev_info_t *dip; 3115 }; 3116 3117 static dev_info_t * 3118 pcihp_devi_find(dev_info_t *dip, uint_t device, uint_t function) 3119 { 3120 struct pcihp_find_ctrl ctrl; 3121 int circular_count; 3122 3123 ctrl.device = device; 3124 ctrl.function = function; 3125 ctrl.dip = NULL; 3126 3127 ndi_devi_enter(dip, &circular_count); 3128 ddi_walk_devs(ddi_get_child(dip), pcihp_match_dev, (void *)&ctrl); 3129 ndi_devi_exit(dip, circular_count); 3130 3131 return (ctrl.dip); 3132 } 3133 3134 static int 3135 pcihp_match_dev(dev_info_t *dip, void *hdl) 3136 { 3137 struct pcihp_find_ctrl *ctrl = (struct pcihp_find_ctrl *)hdl; 3138 pci_regspec_t *pci_rp; 3139 int length; 3140 int pci_dev; 3141 int pci_func; 3142 3143 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3144 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3145 ctrl->dip = NULL; 3146 return (DDI_WALK_TERMINATE); 3147 } 3148 3149 /* get the PCI device address info */ 3150 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3151 pci_func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 3152 3153 /* 3154 * free the memory allocated by ddi_prop_lookup_int_array 3155 */ 3156 ddi_prop_free(pci_rp); 3157 3158 3159 if ((pci_dev == ctrl->device) && (pci_func == ctrl->function)) { 3160 /* found the match for the specified device address */ 3161 ctrl->dip = dip; 3162 return (DDI_WALK_TERMINATE); 3163 } 3164 3165 /* 3166 * continue the walk to the next sibling to look for a match. 3167 */ 3168 return (DDI_WALK_PRUNECHILD); 3169 } 3170 3171 #if 0 3172 /* 3173 * Probe the configuration space of the slot to determine the receptacle 3174 * state. There may not be any devinfo tree created for this slot. 3175 */ 3176 static void 3177 pcihp_probe_slot_state(dev_info_t *dip, int dev, hpc_slot_state_t *rstatep) 3178 { 3179 /* XXX FIX IT */ 3180 } 3181 #endif 3182 3183 /* 3184 * This routine is called when a ENUM# assertion is detected for a bus. 3185 * Since ENUM# may be bussed, the slot that asserted ENUM# may not be known. 3186 * The HPC Driver passes the handle of a slot that is its best guess. 3187 * If the best guess slot is the one that asserted ENUM#, the proper handling 3188 * will be done. If its not, all possible slots will be locked at until 3189 * one that is asserting ENUM is found. 3190 * Also, indicate to the HSC to turn on ENUM# after it is serviced, 3191 * incase if it was disabled by the HSC due to the nature of asynchronous 3192 * delivery of interrupt by the framework. 3193 * 3194 * opcode has the following meanings. 3195 * PCIHP_CLEAR_ENUM = just clear interrupt and return the PCI device no. if 3196 * success, else return -1. 3197 * PCIHP_HANDLE_ENUM = clear interrupt and handle interrupt also. 3198 * 3199 */ 3200 static int 3201 pcihp_handle_enum(pcihp_t *pcihp_p, int favorite_pci_dev, int opcode, 3202 int kmflag) 3203 { 3204 struct pcihp_slotinfo *slotinfop; 3205 int pci_dev, rc, event_serviced = 0; 3206 3207 /* 3208 * Handle ENUM# condition for the "favorite" slot first. 3209 */ 3210 slotinfop = &pcihp_p->slotinfo[favorite_pci_dev]; 3211 if (slotinfop) { 3212 /* 3213 * First try the "favorite" pci device. This is the device 3214 * associated with the handle passed by the HPC Driver. 3215 */ 3216 rc = pcihp_enum_slot(pcihp_p, slotinfop, favorite_pci_dev, 3217 opcode, kmflag); 3218 if (rc != HPC_EVENT_UNCLAIMED) { /* indicates success */ 3219 event_serviced = 1; 3220 /* This MUST be a non-DEBUG feature. */ 3221 if (! pcihp_enum_scan_all) { 3222 return (rc); 3223 } 3224 } 3225 } 3226 3227 /* 3228 * If ENUM# is implemented as a radial signal, then there is no 3229 * need to further poll the slots. 3230 */ 3231 if (pcihp_p->bus_flags & PCIHP_BUS_ENUM_RADIAL) 3232 goto enum_service_check; 3233 3234 /* 3235 * If the "favorite" pci device didn't assert ENUM#, then 3236 * try the rest. Once we find and handle a device that asserted 3237 * ENUM#, then we will terminate the walk by returning unless 3238 * scan-all flag is set. 3239 */ 3240 for (pci_dev = 0; pci_dev < PCI_MAX_DEVS; pci_dev++) { 3241 if (pci_dev != favorite_pci_dev) { 3242 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3243 if (slotinfop == NULL) { 3244 continue; 3245 } 3246 /* Only CPCI devices support ENUM# generation. */ 3247 if (!(slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) 3248 continue; 3249 rc = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 3250 opcode, kmflag); 3251 if (rc != HPC_EVENT_UNCLAIMED) { 3252 event_serviced = 1; 3253 /* This MUST be a non-DEBUG feature. */ 3254 if (! pcihp_enum_scan_all) 3255 break; 3256 } 3257 } 3258 } 3259 3260 enum_service_check: 3261 if (event_serviced) { 3262 return (rc); 3263 } 3264 3265 /* No ENUM# event found, Return */ 3266 return (HPC_EVENT_UNCLAIMED); 3267 } 3268 3269 /* 3270 * This routine attempts to handle a possible ENUM# assertion case for a 3271 * specified slot. This only works for adapters that implement Hot Swap 3272 * Friendly Silicon. If the slot's HS_CSR is read and it specifies ENUM# 3273 * has been asserted, either the insertion or removal handlers will be 3274 * called. 3275 */ 3276 static int 3277 pcihp_enum_slot(pcihp_t *pcihp_p, struct pcihp_slotinfo *slotinfop, int pci_dev, 3278 int opcode, int kmflag) 3279 { 3280 ddi_acc_handle_t handle; 3281 dev_info_t *dip, *new_child = NULL; 3282 int result, rv = -1; 3283 uint8_t hs_csr; 3284 3285 if (pcihp_config_setup(&dip, &handle, &new_child, pci_dev, 3286 pcihp_p) != DDI_SUCCESS) { 3287 return (HPC_EVENT_UNCLAIMED); 3288 } 3289 3290 /* 3291 * Read the device's HS_CSR. 3292 */ 3293 result = pcihp_get_hs_csr(slotinfop, handle, (uint8_t *)&hs_csr); 3294 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): hs_csr = %x, flags = %x", 3295 ddi_driver_name(pcihp_p->dip), ddi_get_instance(pcihp_p->dip), 3296 hs_csr, slotinfop->slot_flags)); 3297 /* 3298 * we teardown our device map here, because in case of an 3299 * extraction event, our nodes would be freed and a teardown 3300 * will cause problems. 3301 */ 3302 pcihp_config_teardown(&handle, &new_child, pci_dev, pcihp_p); 3303 3304 if (result == PCIHP_SUCCESS) { 3305 3306 /* If ENUM# is masked, then it is not us. Some other device */ 3307 if ((hs_csr & HS_CSR_EIM) && (opcode == PCIHP_CLEAR_ENUM)) 3308 return (HPC_EVENT_UNCLAIMED); 3309 /* 3310 * This device supports Full Hot Swap and implements 3311 * the Hot Swap Control and Status Register. 3312 */ 3313 if ((hs_csr & HS_CSR_INS) || 3314 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_INS_PENDING)) { 3315 /* handle insertion ENUM */ 3316 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3317 "Handle Insertion ENUM (INS) " 3318 "on the bus (for slot %s ?)", 3319 ddi_driver_name(pcihp_p->dip), 3320 ddi_get_instance(pcihp_p->dip), 3321 slotinfop->name)); 3322 3323 /* 3324 * generate sysevent 3325 */ 3326 3327 if (opcode == PCIHP_CLEAR_ENUM) 3328 pcihp_gen_sysevent(slotinfop->name, 3329 PCIHP_DR_REQ, 3330 SE_INCOMING_RES, pcihp_p->dip, 3331 kmflag); 3332 3333 rv = pcihp_handle_enum_insertion(pcihp_p, pci_dev, 3334 opcode, kmflag); 3335 3336 } else if ((hs_csr & HS_CSR_EXT) || 3337 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_EXT_PENDING)) { 3338 /* handle extraction ENUM */ 3339 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3340 "Handle Extraction ENUM (EXT) " 3341 "on the bus (for slot %s ?)", 3342 ddi_driver_name(pcihp_p->dip), 3343 ddi_get_instance(pcihp_p->dip), 3344 slotinfop->name)); 3345 3346 /* 3347 * generate sysevent 3348 */ 3349 3350 if (opcode == PCIHP_CLEAR_ENUM) 3351 pcihp_gen_sysevent(slotinfop->name, 3352 PCIHP_DR_REQ, 3353 SE_OUTGOING_RES, 3354 pcihp_p->dip, 3355 kmflag); 3356 3357 rv = pcihp_handle_enum_extraction(pcihp_p, pci_dev, 3358 opcode, kmflag); 3359 } 3360 if (opcode == PCIHP_CLEAR_ENUM) { 3361 if (rv == PCIHP_SUCCESS) 3362 rv = pci_dev; 3363 else 3364 rv = HPC_EVENT_UNCLAIMED; 3365 } 3366 } 3367 3368 return (rv); 3369 } 3370 3371 /* 3372 * This routine is called when a ENUM# caused by lifting the lever 3373 * is detected. If the occupant is configured, it will be unconfigured. 3374 * If the occupant is already unconfigured or is successfully unconfigured, 3375 * the blue LED on the adapter is illuminated which means its OK to remove. 3376 * Please note that the lock must be released before invoking the 3377 * generic AP unconfigure function. 3378 */ 3379 static int 3380 pcihp_handle_enum_extraction(pcihp_t *pcihp_p, int pci_dev, int opcode, 3381 int kmflag) 3382 { 3383 struct pcihp_slotinfo *slotinfop; 3384 int rv = PCIHP_FAILURE; 3385 3386 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3387 3388 /* 3389 * It was observed that, clearing the EXT bit turned the LED ON. 3390 * This is a BIG problem in case if the unconfigure operation 3391 * failed because the board was busy. 3392 * In order to avoid this confusing situation (LED ON but the board 3393 * is not unconfigured), we instead decided not to clear EXT but 3394 * disable further ENUM# from this slot. Disabling ENUM# clears 3395 * the interrupt. 3396 * Finally before returning we clear the interrupt and enable 3397 * ENUM# back again from this slot. 3398 */ 3399 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3400 if (opcode == PCIHP_CLEAR_ENUM) { 3401 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_EXT_PENDING; 3402 return (PCIHP_SUCCESS); 3403 } 3404 3405 mutex_enter(&slotinfop->slot_mutex); 3406 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 3407 mutex_exit(&slotinfop->slot_mutex); 3408 if (rv != HPC_SUCCESS && rv != EBUSY) { 3409 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on Unconfigure", 3410 ddi_driver_name(pcihp_p->dip), 3411 ddi_get_instance(pcihp_p->dip), pci_dev); 3412 } 3413 if (rv == EBUSY) 3414 cmn_err(CE_NOTE, "%s%d: PCI device %x Busy", 3415 ddi_driver_name(pcihp_p->dip), 3416 ddi_get_instance(pcihp_p->dip), pci_dev); 3417 if (rv) { 3418 if (pcihp_cpci_blue_led) 3419 pcihp_hs_csr_op(pcihp_p, pci_dev, 3420 HPC_EVENT_SLOT_BLUE_LED_OFF); 3421 } 3422 /* 3423 * we must clear interrupt in case the unconfigure didn't do it 3424 * due to a duplicate interrupt. Extraction is success. 3425 */ 3426 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_UNCONFIGURE); 3427 3428 if (!rv) { 3429 /* 3430 * Sys Event Notification. 3431 */ 3432 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 3433 SE_HINT_REMOVE, pcihp_p->dip, kmflag); 3434 } 3435 3436 /* 3437 * Enable interrupts back from this board. 3438 * This could potentially be problematic in case if the user is 3439 * quick enough to extract the board. 3440 * But we must do it just in case if the switch is closed again. 3441 */ 3442 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3443 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_EXT_PENDING; 3444 return (rv); 3445 } 3446 3447 /* 3448 * This routine is called when a ENUM# caused by when an adapter insertion 3449 * is detected. If the occupant is successfully configured (i.e. PCI resources 3450 * successfully assigned, the blue LED is left off, otherwise if configuration 3451 * is not successful, the blue LED is illuminated. 3452 * Please note that the lock must be released before invoking the 3453 * generic AP configure function. 3454 */ 3455 static int 3456 pcihp_handle_enum_insertion(pcihp_t *pcihp_p, int pci_dev, int opcode, 3457 int kmflag) 3458 { 3459 struct pcihp_slotinfo *slotinfop; 3460 int rv = PCIHP_FAILURE; 3461 minor_t ap_minor; 3462 major_t ap_major; 3463 3464 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3465 slotinfop->hs_csr_location = 0; 3466 /* we clear the interrupt here. This is a must here. */ 3467 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 3468 /* 3469 * disable further interrupt from this board till it is 3470 * configured. 3471 */ 3472 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3473 if (opcode == PCIHP_CLEAR_ENUM) { 3474 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_INS_PENDING; 3475 return (PCIHP_SUCCESS); 3476 } 3477 3478 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 3479 PCIHP_SLOT_AUTO_CFG_EN) { 3480 mutex_enter(&slotinfop->slot_mutex); 3481 rv = pcihp_configure_ap(pcihp_p, pci_dev); 3482 mutex_exit(&slotinfop->slot_mutex); 3483 if (rv != HPC_SUCCESS) { /* configure failed */ 3484 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on" 3485 " Configure", ddi_driver_name(pcihp_p->dip), 3486 ddi_get_instance(pcihp_p->dip), pci_dev); 3487 if (pcihp_cpci_blue_led) 3488 pcihp_hs_csr_op(pcihp_p, pci_dev, 3489 HPC_EVENT_SLOT_BLUE_LED_ON); 3490 } 3491 3492 /* pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_CLEAR_ENUM); */ 3493 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3494 3495 if (!rv) { 3496 ap_major = ddi_driver_major(pcihp_p->dip); 3497 ap_minor = PCIHP_AP_MINOR_NUM( 3498 ddi_get_instance(pcihp_p->dip), pci_dev); 3499 pcihp_create_occupant_props(pcihp_p->dip, 3500 makedevice(ap_major, ap_minor), pci_dev); 3501 3502 /* 3503 * Sys Event Notification. 3504 */ 3505 pcihp_gen_sysevent(slotinfop->name, 3506 PCIHP_DR_AP_STATE_CHANGE, 3507 SE_HINT_INSERT, pcihp_p->dip, kmflag); 3508 } 3509 3510 } else 3511 rv = PCIHP_SUCCESS; 3512 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 3513 return (rv); 3514 } 3515 3516 /* 3517 * Read the Hot Swap Control and Status Register (HS_CSR) and 3518 * place the result in the location pointed to be hs_csr. 3519 */ 3520 static int 3521 pcihp_get_hs_csr(struct pcihp_slotinfo *slotinfop, 3522 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3523 { 3524 if (slotinfop->hs_csr_location == -1) 3525 return (PCIHP_FAILURE); 3526 3527 if (slotinfop->hs_csr_location == 0) { 3528 slotinfop->hs_csr_location = 3529 pcihp_get_hs_csr_location(config_handle); 3530 3531 if (slotinfop->hs_csr_location == -1) 3532 return (PCIHP_FAILURE); 3533 } 3534 *hs_csr = pci_config_get8(config_handle, slotinfop->hs_csr_location); 3535 return (PCIHP_SUCCESS); 3536 } 3537 3538 /* 3539 * Write the Hot Swap Control and Status Register (HS_CSR) with 3540 * the value being pointed at by hs_csr. 3541 */ 3542 static void 3543 pcihp_set_hs_csr(struct pcihp_slotinfo *slotinfop, 3544 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3545 { 3546 if (slotinfop->hs_csr_location == -1) 3547 return; 3548 if (slotinfop->hs_csr_location == 0) { 3549 slotinfop->hs_csr_location = 3550 pcihp_get_hs_csr_location(config_handle); 3551 if (slotinfop->hs_csr_location == -1) 3552 return; 3553 } 3554 pci_config_put8(config_handle, slotinfop->hs_csr_location, *hs_csr); 3555 PCIHP_DEBUG((CE_NOTE, "hs_csr wrote %x, read %x", *hs_csr, 3556 pci_config_get8(config_handle, slotinfop->hs_csr_location))); 3557 } 3558 3559 static int 3560 pcihp_get_hs_csr_location(ddi_acc_handle_t config_handle) 3561 { 3562 uint8_t cap_id; 3563 uint_t cap_id_loc; 3564 uint16_t status; 3565 int location = -1; 3566 #define PCI_STAT_ECP_SUPP 0x10 3567 3568 /* 3569 * Need to check the Status register for ECP support first. 3570 * Also please note that for type 1 devices, the 3571 * offset could change. Should support type 1 next. 3572 */ 3573 status = pci_config_get16(config_handle, PCI_CONF_STAT); 3574 if (!(status & PCI_STAT_ECP_SUPP)) { 3575 PCIHP_DEBUG((CE_NOTE, "No Ext Capabilities for device\n")); 3576 return (-1); 3577 } 3578 cap_id_loc = pci_config_get8(config_handle, PCI_CONF_EXTCAP); 3579 3580 /* 3581 * Walk the list of capabilities, but don't walk past the end 3582 * of the Configuration Space Header. 3583 */ 3584 while ((cap_id_loc) && (cap_id_loc < PCI_CONF_HDR_SIZE)) { 3585 3586 cap_id = pci_config_get8(config_handle, cap_id_loc); 3587 3588 if (cap_id == CPCI_HOTSWAP_CAPID) { 3589 location = cap_id_loc + PCI_ECP_HS_CSR; 3590 break; 3591 } 3592 cap_id_loc = pci_config_get8(config_handle, 3593 cap_id_loc + 1); 3594 } 3595 return (location); 3596 } 3597 3598 static int 3599 pcihp_add_dummy_reg_property(dev_info_t *dip, 3600 uint_t bus, uint_t device, uint_t func) 3601 { 3602 pci_regspec_t dummy_reg; 3603 3604 bzero(&dummy_reg, sizeof (dummy_reg)); 3605 3606 dummy_reg.pci_phys_hi = PCIHP_MAKE_REG_HIGH(bus, device, func, 0); 3607 3608 return (ndi_prop_update_int_array(DDI_DEV_T_NONE, dip, 3609 "reg", (int *)&dummy_reg, sizeof (pci_regspec_t)/sizeof (int))); 3610 } 3611 3612 static void 3613 pcihp_hs_csr_op(pcihp_t *pcihp_p, int pci_dev, int event) 3614 { 3615 struct pcihp_slotinfo *slotinfop; 3616 ddi_acc_handle_t config_handle; 3617 dev_info_t *dip, *new_child = NULL; 3618 uint8_t hs_csr; 3619 int result; 3620 3621 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3622 3623 if (pcihp_config_setup(&dip, &config_handle, &new_child, pci_dev, 3624 pcihp_p) != DDI_SUCCESS) { 3625 return; 3626 } 3627 3628 result = pcihp_get_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3629 if ((result != PCIHP_SUCCESS) || (event == -1)) { 3630 pcihp_config_teardown(&config_handle, &new_child, pci_dev, 3631 pcihp_p); 3632 return; 3633 } 3634 3635 hs_csr &= 0xf; 3636 switch (event) { 3637 case HPC_EVENT_SLOT_BLUE_LED_ON: 3638 hs_csr |= HS_CSR_LOO; 3639 break; 3640 case HPC_EVENT_SLOT_BLUE_LED_OFF: 3641 hs_csr &= ~HS_CSR_LOO; 3642 break; 3643 case HPC_EVENT_SLOT_CONFIGURE: 3644 hs_csr |= HS_CSR_INS; /* clear INS */ 3645 break; 3646 case HPC_EVENT_CLEAR_ENUM: 3647 hs_csr |= (HS_CSR_INS | HS_CSR_EXT); 3648 break; 3649 case HPC_EVENT_SLOT_UNCONFIGURE: 3650 hs_csr |= HS_CSR_EXT; /* clear EXT */ 3651 break; 3652 case HPC_EVENT_ENABLE_ENUM: 3653 hs_csr &= ~HS_CSR_EIM; 3654 break; 3655 case HPC_EVENT_DISABLE_ENUM: 3656 hs_csr |= HS_CSR_EIM; 3657 break; 3658 case HPC_EVENT_SLOT_NOT_HEALTHY: 3659 case HPC_EVENT_SLOT_HEALTHY_OK: 3660 default: 3661 break; 3662 } 3663 pcihp_set_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3664 pcihp_config_teardown(&config_handle, &new_child, pci_dev, pcihp_p); 3665 } 3666 3667 static int 3668 pcihp_config_setup(dev_info_t **dip, ddi_acc_handle_t *handle, 3669 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3670 { 3671 dev_info_t *pdip = pcihp_p->dip; 3672 int bus, len, rc = DDI_SUCCESS; 3673 struct pcihp_slotinfo *slotinfop; 3674 hpc_slot_state_t rstate; 3675 ddi_acc_hdl_t *hp; 3676 pci_bus_range_t pci_bus_range; 3677 3678 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3679 3680 /* 3681 * If declared failed, don't allow Config operations. 3682 * Otherwise, if good or failing, it is assumed Ok 3683 * to get config data. 3684 */ 3685 if (slotinfop->condition == AP_COND_FAILED) { 3686 return (PCIHP_FAILURE); 3687 } 3688 /* 3689 * check to see if there is a hardware present first. 3690 * If no hardware present, no need to probe this slot. 3691 * We can do this first probably as a first step towards 3692 * safeguarding from accidental removal (we don't support it!). 3693 */ 3694 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_SLOT_STATE, 3695 (caddr_t)&rstate) != 0) { 3696 return (DDI_FAILURE); 3697 } 3698 3699 if (rstate != HPC_SLOT_CONNECTED) { 3700 /* error. slot must be connected */ 3701 return (DDI_FAILURE); 3702 } 3703 *new_child = NULL; 3704 3705 /* 3706 * If there is no dip then we need to see if an 3707 * adapter has just been hot plugged. 3708 */ 3709 len = sizeof (pci_bus_range_t); 3710 if (ddi_getlongprop_buf(DDI_DEV_T_ANY, pdip, 3711 0, "bus-range", 3712 (caddr_t)&pci_bus_range, &len) != DDI_SUCCESS) { 3713 3714 return (PCIHP_FAILURE); 3715 } 3716 3717 /* primary bus number of this bus node */ 3718 bus = pci_bus_range.lo; 3719 3720 if (ndi_devi_alloc(pdip, DEVI_PSEUDO_NEXNAME, 3721 (pnode_t)DEVI_SID_NODEID, dip) != NDI_SUCCESS) { 3722 3723 PCIHP_DEBUG((CE_NOTE, "Failed to alloc probe node\n")); 3724 return (PCIHP_FAILURE); 3725 } 3726 3727 if (pcihp_add_dummy_reg_property(*dip, bus, 3728 pci_dev, 0) != DDI_SUCCESS) { 3729 3730 (void) ndi_devi_free(*dip); 3731 return (PCIHP_FAILURE); 3732 } 3733 3734 /* 3735 * Probe for a device. Possibly a non (c)PCI board could be sitting 3736 * here which would never respond to PCI config cycles - in which 3737 * case we return. Eventually a configure operation would fail. 3738 */ 3739 if (pci_config_setup(*dip, handle) != DDI_SUCCESS) { 3740 cmn_err(CE_WARN, "Cannot set config space map for" 3741 " pci device number %d", pci_dev); 3742 (void) ndi_devi_free(*dip); 3743 return (PCIHP_FAILURE); 3744 } 3745 3746 /* 3747 * See if there is any PCI HW at this location 3748 * by reading the Vendor ID. If it returns with 0xffff 3749 * then there is no hardware at this location. 3750 */ 3751 if (pcihp_indirect_map(*dip) == DDI_SUCCESS) { 3752 if (pci_config_get16(*handle, 0) == 0xffff) { 3753 pci_config_teardown(handle); 3754 (void) ndi_devi_free(*dip); 3755 return (PCIHP_FAILURE); 3756 } 3757 } else { 3758 /* Check if mapping is OK */ 3759 hp = impl_acc_hdl_get(*handle); 3760 3761 if (ddi_peek16(*dip, (int16_t *)(hp->ah_addr), 3762 (int16_t *)0) != DDI_SUCCESS) { 3763 #ifdef DEBUG 3764 cmn_err(CE_WARN, "Cannot Map PCI config space for " 3765 "device number %d", pci_dev); 3766 #endif 3767 pci_config_teardown(handle); 3768 (void) ndi_devi_free(*dip); 3769 return (PCIHP_FAILURE); 3770 } 3771 } 3772 3773 *new_child = *dip; 3774 return (rc); 3775 3776 } 3777 3778 static void 3779 pcihp_config_teardown(ddi_acc_handle_t *handle, 3780 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3781 { 3782 struct pcihp_slotinfo *slotinfop = &pcihp_p->slotinfo[pci_dev]; 3783 3784 pci_config_teardown(handle); 3785 if (*new_child) { 3786 (void) ndi_devi_free(*new_child); 3787 /* 3788 * If occupant not configured, reset HS_CSR location 3789 * so that we reprobe. This covers cases where 3790 * the receptacle had a status change without a 3791 * notification to the framework. 3792 */ 3793 if (slotinfop->ostate != AP_OSTATE_CONFIGURED) 3794 slotinfop->hs_csr_location = 0; 3795 } 3796 } 3797 3798 static int 3799 pcihp_get_board_type(struct pcihp_slotinfo *slotinfop) 3800 { 3801 hpc_board_type_t board_type; 3802 3803 /* 3804 * Get board type data structure, hpc_board_type_t. 3805 */ 3806 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_BOARD_TYPE, 3807 (caddr_t)&board_type) != 0) { 3808 3809 cmn_err(CE_WARN, "Cannot Get Board Type.."); 3810 return (-1); 3811 } 3812 3813 /* 3814 * We expect the Hotswap Controller to tell us if the board is 3815 * a hotswap board or not, as it probably cannot differentiate 3816 * between a basic hotswap board, a non hotswap board and a 3817 * hotswap nonfriendly board. 3818 * So here is the logic to differentiate between the various 3819 * types of cPCI boards. 3820 * In case if the HSC returns board type as unknown, we assign 3821 * the default board type as defined by a configurable variable 3822 * for a BHS, nonfriendly FHS and non HS board. 3823 */ 3824 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 3825 if (slotinfop->hs_csr_location > 0) 3826 board_type = HPC_BOARD_CPCI_FULL_HS; 3827 else { 3828 if (board_type == HPC_BOARD_CPCI_HS) { 3829 if (slotinfop->hs_csr_location == -1) 3830 board_type = HPC_BOARD_CPCI_BASIC_HS; 3831 } 3832 if (board_type == HPC_BOARD_UNKNOWN) { 3833 if (slotinfop->hs_csr_location == -1) { 3834 board_type = pcihp_cpci_board_type; 3835 } else if (slotinfop->hs_csr_location != 0) { 3836 board_type = HPC_BOARD_CPCI_FULL_HS; 3837 } 3838 } 3839 } 3840 /* 3841 * If board type is a non hotswap board, then we must 3842 * deny a unconfigure operation. So set this flag. 3843 * Strictly speaking, there is no reason not to disallow 3844 * a unconfigure operation on nonhotswap boards. But this 3845 * is the only way we can prevent a user from accidentally 3846 * removing the board and damaging it. 3847 */ 3848 if (board_type == HPC_BOARD_CPCI_NON_HS) 3849 slotinfop->slot_flags |= PCIHP_SLOT_DEV_NON_HOTPLUG; 3850 else 3851 slotinfop->slot_flags &= ~PCIHP_SLOT_DEV_NON_HOTPLUG; 3852 } 3853 return (board_type); 3854 } 3855 3856 3857 /* 3858 * Generate the System Event with a possible hint. 3859 */ 3860 static void 3861 pcihp_gen_sysevent(char *slot_name, int event_sub_class, int hint, 3862 dev_info_t *self, int kmflag) 3863 { 3864 3865 int err; 3866 char *ev_subclass = NULL; 3867 sysevent_id_t eid; 3868 nvlist_t *ev_attr_list = NULL; 3869 char attach_pnt[MAXPATHLEN]; 3870 3871 /* 3872 * Minor device name (AP) will be bus path 3873 * concatenated with slot name 3874 */ 3875 3876 (void) strcpy(attach_pnt, PCIHP_DEVICES_STR); 3877 (void) ddi_pathname(self, attach_pnt + strlen(PCIHP_DEVICES_STR)); 3878 (void) strcat(attach_pnt, ":"); 3879 (void) strcat(attach_pnt, slot_name); 3880 err = nvlist_alloc(&ev_attr_list, NV_UNIQUE_NAME_TYPE, kmflag); 3881 if (err != 0) { 3882 cmn_err(CE_WARN, 3883 "%s%d: Failed to allocate memory " 3884 "for event attributes%s", ddi_driver_name(self), 3885 ddi_get_instance(self), ESC_DR_AP_STATE_CHANGE); 3886 return; 3887 } 3888 3889 switch (event_sub_class) { 3890 3891 /* event sub class: ESC_DR_AP_STATE_CHANGE */ 3892 case PCIHP_DR_AP_STATE_CHANGE: 3893 3894 ev_subclass = ESC_DR_AP_STATE_CHANGE; 3895 3896 switch (hint) { 3897 3898 case SE_NO_HINT: /* fall through */ 3899 case SE_HINT_INSERT: /* fall through */ 3900 case SE_HINT_REMOVE: 3901 3902 3903 err = nvlist_add_string(ev_attr_list, DR_HINT, 3904 SE_HINT2STR(hint)); 3905 3906 if (err != 0) { 3907 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s]" 3908 " for %s event", ddi_driver_name(self), 3909 ddi_get_instance(self), 3910 DR_HINT, ESC_DR_AP_STATE_CHANGE); 3911 nvlist_free(ev_attr_list); 3912 return; 3913 } 3914 break; 3915 3916 default: 3917 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3918 ddi_driver_name(self), ddi_get_instance(self)); 3919 nvlist_free(ev_attr_list); 3920 return; 3921 } 3922 3923 break; 3924 3925 /* event sub class: ESC_DR_REQ */ 3926 case PCIHP_DR_REQ: 3927 3928 ev_subclass = ESC_DR_REQ; 3929 3930 switch (hint) { 3931 3932 case SE_INVESTIGATE_RES: /* fall through */ 3933 case SE_INCOMING_RES: /* fall through */ 3934 case SE_OUTGOING_RES: /* fall through */ 3935 3936 err = nvlist_add_string(ev_attr_list, DR_REQ_TYPE, 3937 SE_REQ2STR(hint)); 3938 3939 if (err != 0) { 3940 cmn_err(CE_WARN, 3941 "%s%d: Failed to add attr [%s] " 3942 "for %s event", ddi_driver_name(self), 3943 ddi_get_instance(self), 3944 DR_REQ_TYPE, ESC_DR_REQ); 3945 nvlist_free(ev_attr_list); 3946 return; 3947 } 3948 break; 3949 3950 default: 3951 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3952 ddi_driver_name(self), ddi_get_instance(self)); 3953 nvlist_free(ev_attr_list); 3954 return; 3955 } 3956 3957 break; 3958 3959 default: 3960 cmn_err(CE_WARN, "%s%d: Unknown Event subclass", 3961 ddi_driver_name(self), ddi_get_instance(self)); 3962 nvlist_free(ev_attr_list); 3963 return; 3964 } 3965 3966 /* 3967 * Add attachment point as attribute (common attribute) 3968 */ 3969 3970 err = nvlist_add_string(ev_attr_list, DR_AP_ID, attach_pnt); 3971 3972 if (err != 0) { 3973 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s] for %s event", 3974 ddi_driver_name(self), ddi_get_instance(self), 3975 DR_AP_ID, EC_DR); 3976 nvlist_free(ev_attr_list); 3977 return; 3978 } 3979 3980 3981 /* 3982 * Log this event with sysevent framework. 3983 */ 3984 3985 err = ddi_log_sysevent(self, DDI_VENDOR_SUNW, EC_DR, 3986 ev_subclass, ev_attr_list, &eid, 3987 ((kmflag == KM_SLEEP) ? DDI_SLEEP : DDI_NOSLEEP)); 3988 if (err != 0) { 3989 cmn_err(CE_WARN, "%s%d: Failed to log %s event", 3990 ddi_driver_name(self), ddi_get_instance(self), EC_DR); 3991 } 3992 3993 nvlist_free(ev_attr_list); 3994 } 3995 3996 int 3997 pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 3998 int flags, char *name, caddr_t valuep, int *lengthp) 3999 { 4000 int pci_dev; 4001 4002 if (dev == DDI_DEV_T_ANY) 4003 goto skip; 4004 4005 if (strcmp(name, "pci-occupant") == 0) { 4006 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 4007 pcihp_create_occupant_props_nolock(dip, dev, pci_dev); 4008 } 4009 /* other cases... */ 4010 skip: 4011 return (ddi_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp)); 4012 } 4013 4014 /* 4015 * this function is called only for SPARC platforms, where we may have 4016 * a mix n' match of direct vs indirectly mapped configuration space. 4017 * On x86, this function should always return success since the configuration 4018 * space is always indirect mapped. 4019 */ 4020 /*ARGSUSED*/ 4021 static int 4022 pcihp_indirect_map(dev_info_t *dip) 4023 { 4024 #if defined(__sparc) 4025 int rc = DDI_FAILURE; 4026 4027 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 0, 4028 PCI_DEV_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4029 rc = DDI_SUCCESS; 4030 else 4031 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 4032 0, PCI_BUS_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4033 rc = DDI_SUCCESS; 4034 return (rc); 4035 #else 4036 return (DDI_SUCCESS); 4037 #endif 4038 } 4039