1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * ********************************************************************** 28 * Extension module for PCI nexus drivers to support PCI Hot Plug feature. 29 * 30 * DESCRIPTION: 31 * This module basically implements "devctl" and Attachment Point device 32 * nodes for hot plug operations. The cb_ops functions needed for access 33 * to these device nodes are also implemented. For hotplug operations 34 * on Attachment Points it interacts with the hotplug services (HPS) 35 * framework. A pci nexus driver would simply call pcihp_init() in its 36 * attach() function and pcihp_uninit() call in its detach() function. 37 * ********************************************************************** 38 */ 39 40 #include <sys/conf.h> 41 #include <sys/kmem.h> 42 #include <sys/debug.h> 43 #include <sys/modctl.h> 44 #include <sys/autoconf.h> 45 #include <sys/ddi.h> 46 #include <sys/sunddi.h> 47 #include <sys/sunndi.h> 48 #include <sys/ddi_impldefs.h> 49 #include <sys/ndi_impldefs.h> 50 #include <sys/ddipropdefs.h> 51 #include <sys/open.h> 52 #include <sys/file.h> 53 #include <sys/stat.h> 54 #include <sys/pci.h> 55 #include <sys/pci_impl.h> 56 #include <sys/devctl.h> 57 #include <sys/hotplug/hpcsvc.h> 58 #include <sys/hotplug/pci/pcicfg.h> 59 #include <sys/hotplug/pci/pcihp.h> 60 #include <sys/sysevent.h> 61 #include <sys/sysevent/eventdefs.h> 62 #include <sys/sysevent/dr.h> 63 #include <sys/fs/dv_node.h> 64 65 /* 66 * NOTE: 67 * This module depends on PCI Configurator module (misc/pcicfg), 68 * Hot Plug Services framework module (misc/hpcsvc) and Bus Resource 69 * Allocator module (misc/busra). 70 */ 71 72 /* 73 * ************************************************************************ 74 * *** Implementation specific data structures/definitions. *** 75 * ************************************************************************ 76 */ 77 78 /* soft state */ 79 typedef enum { PCIHP_SOFT_STATE_CLOSED, PCIHP_SOFT_STATE_OPEN, 80 PCIHP_SOFT_STATE_OPEN_EXCL } pcihp_soft_state_t; 81 82 #define PCI_MAX_DEVS 32 /* max. number of devices on a pci bus */ 83 84 /* the following correspond to sysevent defined subclasses */ 85 #define PCIHP_DR_AP_STATE_CHANGE 0 86 #define PCIHP_DR_REQ 1 87 88 /* pcihp_get_soft_state() command argument */ 89 #define PCIHP_DR_NOOP 0 90 #define PCIHP_DR_BUS_CONFIGURE 1 91 #define PCIHP_DR_BUS_UNCONFIGURE 2 92 #define PCIHP_DR_SLOT_ENTER 4 93 #define PCIHP_DR_SLOT_EXIT 8 94 95 /* hot plug bus state */ 96 enum { PCIHP_BUS_INITIALIZING, PCIHP_BUS_UNCONFIGURED, 97 PCIHP_BUS_CONFIGURED }; 98 99 /* 100 * Soft state structure associated with each hot plug pci bus instance. 101 */ 102 typedef struct pcihp { 103 struct pcihp *nextp; 104 105 /* devinfo pointer to the pci bus node */ 106 dev_info_t *dip; 107 108 /* soft state flags: PCIHP_SOFT_STATE_* */ 109 pcihp_soft_state_t soft_state; 110 111 /* global mutex to serialize exclusive access to the bus */ 112 kmutex_t mutex; 113 114 /* slot information structure */ 115 struct pcihp_slotinfo { 116 hpc_slot_t slot_hdl; /* HPS slot handle */ 117 ap_rstate_t rstate; /* state of Receptacle */ 118 ap_ostate_t ostate; /* state of the Occupant */ 119 ap_condition_t condition; /* condition of the occupant */ 120 time32_t last_change; /* XXX needed? */ 121 uint32_t event_mask; /* last event mask registered */ 122 char *name; /* slot logical name */ 123 uint_t slot_flags; 124 uint16_t slot_type; /* slot type: pci or cpci */ 125 uint16_t slot_capabilities; /* 64bit, etc. */ 126 int hs_csr_location; /* Location of HS_CSR */ 127 kmutex_t slot_mutex; /* mutex to serialize hotplug */ 128 /* operations on the slot */ 129 } slotinfo[PCI_MAX_DEVS]; 130 131 /* misc. bus attributes */ 132 uint_t bus_flags; 133 uint_t bus_state; 134 uint_t slots_active; 135 } pcihp_t; 136 137 /* 138 * Bit definitions for slot_flags field: 139 * 140 * PCIHP_SLOT_AUTO_CFG_EN This flags is set if nexus can do auto 141 * configuration of hot plugged card on this slot 142 * if the hardware reports the hot plug events. 143 * 144 * PCIHP_SLOT_DISABLED Slot is disabled for hotplug operations. 145 * 146 * PCIHP_SLOT_NOT_HEALTHY HEALTHY# signal is not OK on this slot. 147 */ 148 #define PCIHP_SLOT_AUTO_CFG_EN 0x1 149 #define PCIHP_SLOT_DISABLED 0x2 150 #define PCIHP_SLOT_NOT_HEALTHY 0x4 151 #define PCIHP_SLOT_DEV_NON_HOTPLUG 0x8 152 #define PCIHP_SLOT_ENUM_INS_PENDING 0x10 153 #define PCIHP_SLOT_ENUM_EXT_PENDING 0x20 154 155 /* 156 * Bit definitions for bus_flags field: 157 * 158 * PCIHP_BUS_66MHZ Bus is running at 66Mhz. 159 */ 160 #define PCIHP_BUS_66MHZ 0x1 161 #define PCIHP_BUS_ENUM_RADIAL 0x2 162 163 #define PCIHP_DEVICES_STR "/devices" 164 165 /* 166 * control structure for tree walk during configure/unconfigure operation. 167 */ 168 struct pcihp_config_ctrl { 169 int pci_dev; /* PCI device number for the slot */ 170 uint_t flags; /* control flags (see below) */ 171 int op; /* operation: PCIHP_ONLINE or PCIHP_OFFLINE */ 172 int rv; /* return error code */ 173 dev_info_t *dip; /* dip at which the (first) error occurred */ 174 hpc_occupant_info_t *occupant; 175 }; 176 177 /* 178 * control flags for configure/unconfigure operations on the tree. 179 * 180 * PCIHP_CFG_CONTINUE continue the operation ignoring errors 181 */ 182 #define PCIHP_CFG_CONTINUE 0x1 183 184 #define PCIHP_ONLINE 1 185 #define PCIHP_OFFLINE 0 186 187 188 /* Leaf ops (hotplug controls for target devices) */ 189 static int pcihp_open(dev_t *, int, int, cred_t *); 190 static int pcihp_close(dev_t, int, int, cred_t *); 191 static int pcihp_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 192 193 #ifdef DEBUG 194 static int pcihp_debug = 0; 195 #define PCIHP_DEBUG(args) if (pcihp_debug >= 1) cmn_err args 196 #define PCIHP_DEBUG2(args) if (pcihp_debug >= 2) cmn_err args 197 #else 198 #define PCIHP_DEBUG(args) 199 #define PCIHP_DEBUG2(args) 200 #endif 201 202 /* 203 * We process ENUM# event one device at a time ie. as soon as we detect 204 * that a device has the right ENUM# conditions, we return. If the following 205 * variable is set to non-zero, we scan all the devices on the bus 206 * for ENUM# conditions. 207 */ 208 static int pcihp_enum_scan_all = 0; 209 /* 210 * If HSC driver cannot determine the board type (for example: it may not 211 * be possible to differentiate between a Basic Hotswap, Non Hotswap or 212 * Non-friendly Full hotswap board), the default board type is assigned 213 * to be as defined by the following variable. 214 */ 215 static int pcihp_cpci_board_type = HPC_BOARD_CPCI_NON_HS; 216 static int pcihp_cpci_led_blink = 30; 217 /* 218 * It was noted that the blue LED when written on/off would cause INS/EXT 219 * bit to be set causing an extra interrupt. Although the cPCI specifications 220 * does not imply this, this behavior is seen with some FHS silicons. 221 * Also, handling the INS/EXT bit would control the LED being On/Off. 222 * Until the behavior is confirmed, this flag could be used to enable or 223 * disable handling the LED. 224 * 0 means the silicons handles the LED behavior via the INS/EXT bit. 225 * 1 means the software must explicitly do the LED behavior. 226 */ 227 static int pcihp_cpci_blue_led = 1; 228 229 /* static functions */ 230 static pcihp_t *pcihp_create_soft_state(dev_info_t *dip); 231 static void pcihp_destroy_soft_state(dev_info_t *dip); 232 static pcihp_t *pcihp_get_soft_state(dev_info_t *dip, int cmd, int *rv); 233 static int pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev); 234 static int pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev); 235 static int pcihp_new_slot_state(dev_info_t *, hpc_slot_t, 236 hpc_slot_info_t *, int); 237 static int pcihp_configure(dev_info_t *, void *); 238 static bool_t pcihp_check_status(dev_info_t *); 239 static int pcihp_event_handler(caddr_t, uint_t); 240 static dev_info_t *pcihp_devi_find(dev_info_t *dip, uint_t dev, uint_t func); 241 static int pcihp_match_dev(dev_info_t *dip, void *hdl); 242 static int pcihp_get_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 243 uint8_t *); 244 static void pcihp_set_hs_csr(struct pcihp_slotinfo *, ddi_acc_handle_t, 245 uint8_t *); 246 static int pcihp_get_hs_csr_location(ddi_acc_handle_t); 247 static int pcihp_handle_enum(pcihp_t *, int, int, int); 248 static void pcihp_hs_csr_op(pcihp_t *, int, int); 249 static int pcihp_enum_slot(pcihp_t *, struct pcihp_slotinfo *, int, int, int); 250 static int pcihp_handle_enum_extraction(pcihp_t *, int, int, int); 251 static int pcihp_handle_enum_insertion(pcihp_t *, int, int, int); 252 static int pcihp_add_dummy_reg_property(dev_info_t *, uint_t, uint_t, uint_t); 253 static int pcihp_config_setup(dev_info_t **, ddi_acc_handle_t *, 254 dev_info_t **, int, pcihp_t *); 255 static void pcihp_config_teardown(ddi_acc_handle_t *, 256 dev_info_t **, int, pcihp_t *); 257 static int pcihp_get_board_type(struct pcihp_slotinfo *); 258 /* sysevent function */ 259 static void pcihp_gen_sysevent(char *, int, int, dev_info_t *, int); 260 261 extern int pcicfg_configure(dev_info_t *, uint_t); 262 extern int pcicfg_unconfigure(dev_info_t *, uint_t); 263 264 static int pcihp_list_occupants(dev_info_t *, void *); 265 static int pcihp_indirect_map(dev_info_t *dip); 266 267 #if 0 268 static void pcihp_probe_slot_state(dev_info_t *, int, hpc_slot_state_t *); 269 #endif 270 271 int pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 272 int flags, char *name, caddr_t valuep, int *lengthp); 273 274 struct cb_ops pcihp_cb_ops = { 275 pcihp_open, /* open */ 276 pcihp_close, /* close */ 277 nodev, /* strategy */ 278 nodev, /* print */ 279 nodev, /* dump */ 280 nodev, /* read */ 281 nodev, /* write */ 282 pcihp_ioctl, /* ioctl */ 283 nodev, /* devmap */ 284 nodev, /* mmap */ 285 nodev, /* segmap */ 286 nochpoll, /* poll */ 287 pcihp_prop_op, /* cb_prop_op */ 288 NULL, /* streamtab */ 289 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 290 CB_REV, /* rev */ 291 nodev, /* int (*cb_aread)() */ 292 nodev /* int (*cb_awrite)() */ 293 }; 294 295 /* 296 * local data 297 */ 298 299 int pcihp_autocfg_enabled = 1; /* auto config is enabled by default */ 300 301 static kmutex_t pcihp_mutex; /* mutex to protect the following data */ 302 static pcihp_t *pcihp_head = NULL; 303 304 static kmutex_t pcihp_open_mutex; /* mutex to protect open/close/uninit */ 305 static int pci_devlink_flags = 0; 306 307 /* 308 * Module linkage information for the kernel. 309 */ 310 extern struct mod_ops mod_miscops; 311 static struct modlmisc modlmisc = { 312 &mod_miscops, 313 "PCI nexus hotplug support", 314 }; 315 316 static struct modlinkage modlinkage = { 317 MODREV_1, 318 &modlmisc, 319 NULL 320 }; 321 322 int 323 _init(void) 324 { 325 int error; 326 327 mutex_init(&pcihp_mutex, NULL, MUTEX_DRIVER, NULL); 328 mutex_init(&pcihp_open_mutex, NULL, MUTEX_DRIVER, NULL); 329 if ((error = mod_install(&modlinkage)) != 0) { 330 mutex_destroy(&pcihp_open_mutex); 331 mutex_destroy(&pcihp_mutex); 332 } 333 334 return (error); 335 } 336 337 int 338 _fini(void) 339 { 340 return (EBUSY); 341 } 342 343 int 344 _info(struct modinfo *modinfop) 345 { 346 return (mod_info(&modlinkage, modinfop)); 347 } 348 349 static pcihp_t * 350 pcihp_create_soft_state( 351 dev_info_t *dip) 352 { 353 pcihp_t *pcihp_p; 354 355 pcihp_p = kmem_zalloc(sizeof (struct pcihp), KM_SLEEP); 356 357 pcihp_p->dip = dip; 358 mutex_init(&pcihp_p->mutex, NULL, MUTEX_DRIVER, NULL); 359 360 mutex_enter(&pcihp_mutex); 361 pcihp_p->nextp = pcihp_head; 362 pcihp_head = pcihp_p; 363 pcihp_p->bus_state = PCIHP_BUS_INITIALIZING; 364 pcihp_p->slots_active = 0; 365 mutex_exit(&pcihp_mutex); 366 367 return (pcihp_p); 368 } 369 370 static void 371 pcihp_destroy_soft_state( 372 dev_info_t *dip) 373 { 374 pcihp_t *p; 375 pcihp_t **pp; 376 377 mutex_enter(&pcihp_mutex); 378 pp = &pcihp_head; 379 while ((p = *pp) != NULL) { 380 if (p->dip == dip) { 381 *pp = p->nextp; 382 kmem_free(p, sizeof (struct pcihp)); 383 break; 384 } 385 pp = &(p->nextp); 386 } 387 mutex_exit(&pcihp_mutex); 388 } 389 390 /* 391 * This function should be imported by client nexus drivers as their 392 * devo_getinfo() entry point. 393 */ 394 395 /* ARGSUSED */ 396 int 397 pcihp_info( 398 dev_info_t *dip, 399 ddi_info_cmd_t cmd, 400 void *arg, 401 void **result) 402 { 403 pcihp_t *pcihp_p; 404 major_t major; 405 minor_t minor; 406 int instance; 407 408 major = getmajor((dev_t)arg); 409 minor = getminor((dev_t)arg); 410 instance = PCIHP_AP_MINOR_NUM_TO_INSTANCE(minor); 411 412 switch (cmd) { 413 default: 414 return (DDI_FAILURE); 415 416 case DDI_INFO_DEVT2INSTANCE: 417 *result = (void *)(intptr_t)instance; 418 return (DDI_SUCCESS); 419 420 case DDI_INFO_DEVT2DEVINFO: 421 mutex_enter(&pcihp_mutex); 422 pcihp_p = pcihp_head; 423 while (pcihp_p != NULL) { 424 if (ddi_driver_major(pcihp_p->dip) == 425 major && ddi_get_instance(pcihp_p->dip) == 426 instance) { 427 *result = (void *)pcihp_p->dip; 428 mutex_exit(&pcihp_mutex); 429 return (DDI_SUCCESS); 430 } 431 pcihp_p = pcihp_p->nextp; 432 } 433 mutex_exit(&pcihp_mutex); 434 return (DDI_FAILURE); 435 } 436 } 437 438 /* 439 * This function retrieves the hot plug soft state and performs the 440 * following primitive commands while the soft state is locked: 441 * mark the bus unconfigured, increment slot activity, decrement 442 * slot activity and noop. 443 */ 444 445 /* ARGSUSED */ 446 static pcihp_t * 447 pcihp_get_soft_state( 448 dev_info_t *dip, int cmd, int *rv) 449 { 450 pcihp_t *pcihp_p; 451 452 *rv = PCIHP_SUCCESS; 453 mutex_enter(&pcihp_mutex); 454 pcihp_p = pcihp_head; 455 while (pcihp_p != NULL) { 456 if (pcihp_p->dip == dip) { 457 switch (cmd) { 458 case PCIHP_DR_BUS_UNCONFIGURE: 459 if (pcihp_p->slots_active == 0) 460 pcihp_p->bus_state = 461 PCIHP_BUS_UNCONFIGURED; 462 else 463 *rv = PCIHP_FAILURE; 464 break; 465 case PCIHP_DR_SLOT_ENTER: 466 if (pcihp_p->bus_state == 467 PCIHP_BUS_UNCONFIGURED) 468 *rv = PCIHP_FAILURE; 469 else 470 pcihp_p->slots_active++; 471 break; 472 case PCIHP_DR_SLOT_EXIT: 473 ASSERT(pcihp_p->slots_active > 0); 474 if (pcihp_p->slots_active == 0) 475 cmn_err(CE_PANIC, 476 "pcihp (%s%d): mismatched slot" 477 " activity", 478 ddi_driver_name(dip), 479 ddi_get_instance(dip)); 480 else 481 pcihp_p->slots_active--; 482 break; 483 case PCIHP_DR_NOOP: 484 break; 485 default: 486 *rv = PCIHP_FAILURE; 487 break; 488 } 489 mutex_exit(&pcihp_mutex); 490 return (pcihp_p); 491 } 492 pcihp_p = pcihp_p->nextp; 493 } 494 mutex_exit(&pcihp_mutex); 495 496 return (NULL); 497 } 498 499 /* ARGSUSED3 */ 500 static int 501 pcihp_open(dev_t *devp, int flags, int otyp, cred_t *credp) 502 { 503 dev_info_t *self; 504 pcihp_t *pcihp_p; 505 minor_t minor; 506 int pci_dev; 507 int rv; 508 509 /* 510 * Make sure the open is for the right file type. 511 */ 512 if (otyp != OTYP_CHR) 513 return (EINVAL); 514 515 mutex_enter(&pcihp_open_mutex); 516 /* 517 * Get the soft state structure. 518 */ 519 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)*devp, 520 (void **)&self) != DDI_SUCCESS) { 521 mutex_exit(&pcihp_open_mutex); 522 return (ENXIO); 523 } 524 525 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 526 ASSERT(pcihp_p != NULL); 527 528 mutex_enter(&pcihp_p->mutex); 529 530 /* 531 * If the pci_dev is valid then the minor device is an 532 * AP. Otherwise it is ":devctl" minor device. 533 */ 534 minor = getminor(*devp); 535 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(minor); 536 if (pci_dev < PCI_MAX_DEVS) { 537 struct pcihp_slotinfo *slotinfop; 538 539 slotinfop = &pcihp_p->slotinfo[pci_dev]; 540 if (slotinfop->slot_hdl == NULL) { 541 mutex_exit(&pcihp_p->mutex); 542 mutex_exit(&pcihp_open_mutex); 543 return (ENXIO); 544 } 545 } 546 547 /* 548 * Handle the open by tracking the device state. 549 * 550 * Note: Needs review w.r.t exclusive access to AP or the bus. 551 * Currently in the pci plug-in we don't use EXCL open at all 552 * so the code below implements EXCL access on the bus. 553 */ 554 555 /* enforce exclusive access to the bus */ 556 if ((pcihp_p->soft_state == PCIHP_SOFT_STATE_OPEN_EXCL) || 557 ((flags & FEXCL) && 558 (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED))) { 559 mutex_exit(&pcihp_p->mutex); 560 mutex_exit(&pcihp_open_mutex); 561 return (EBUSY); 562 } 563 564 if (flags & FEXCL) 565 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN_EXCL; 566 else 567 pcihp_p->soft_state = PCIHP_SOFT_STATE_OPEN; 568 569 mutex_exit(&pcihp_p->mutex); 570 mutex_exit(&pcihp_open_mutex); 571 572 return (0); 573 } 574 575 /* ARGSUSED */ 576 static int 577 pcihp_close(dev_t dev, int flags, int otyp, cred_t *credp) 578 { 579 dev_info_t *self; 580 pcihp_t *pcihp_p; 581 int rv; 582 583 if (otyp != OTYP_CHR) 584 return (EINVAL); 585 586 mutex_enter(&pcihp_open_mutex); 587 588 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 589 (void **)&self) != DDI_SUCCESS) { 590 mutex_exit(&pcihp_open_mutex); 591 return (ENXIO); 592 } 593 594 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_NOOP, &rv); 595 ASSERT(pcihp_p != NULL); 596 597 mutex_enter(&pcihp_p->mutex); 598 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 599 mutex_exit(&pcihp_p->mutex); 600 601 mutex_exit(&pcihp_open_mutex); 602 603 return (0); 604 } 605 606 static int 607 pcihp_list_occupants(dev_info_t *dip, void *hdl) 608 { 609 int pci_dev; 610 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 611 pci_regspec_t *pci_rp; 612 int length; 613 major_t major; 614 615 /* 616 * Get the PCI device number information from the devinfo 617 * node. Since the node may not have the address field 618 * setup (this is done in the DDI_INITCHILD of the parent) 619 * we look up the 'reg' property to decode that information. 620 */ 621 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 622 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, 623 (uint_t *)&length) != DDI_PROP_SUCCESS) { 624 ctrl->rv = DDI_FAILURE; 625 ctrl->dip = dip; 626 return (DDI_WALK_TERMINATE); 627 } 628 629 /* get the pci device id information */ 630 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 631 632 /* 633 * free the memory allocated by ddi_prop_lookup_int_array 634 */ 635 ddi_prop_free(pci_rp); 636 637 /* 638 * Match the node for the device number of the slot. 639 */ 640 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 641 642 major = ddi_driver_major(dip); 643 644 /* 645 * If the node is not yet attached, then don't list it 646 * as an occupant. This is valid, since nothing can be 647 * consuming it until it is attached, and cfgadm will 648 * ask for the property explicitly which will cause it 649 * to be re-freshed right before checking with rcm. 650 */ 651 if ((major == -1) || !i_ddi_devi_attached(dip)) 652 return (DDI_WALK_PRUNECHILD); 653 654 /* 655 * If we have used all our occupants then print mesage 656 * and terminate walk. 657 */ 658 if (ctrl->occupant->i >= HPC_MAX_OCCUPANTS) { 659 cmn_err(CE_WARN, 660 "pcihp (%s%d): unable to list all occupants", 661 ddi_driver_name(ddi_get_parent(dip)), 662 ddi_get_instance(ddi_get_parent(dip))); 663 return (DDI_WALK_TERMINATE); 664 } 665 666 /* 667 * No need to hold the dip as ddi_walk_devs 668 * has already arranged that for us. 669 */ 670 ctrl->occupant->id[ctrl->occupant->i] = 671 kmem_alloc(sizeof (char[MAXPATHLEN]), KM_SLEEP); 672 (void) ddi_pathname(dip, 673 (char *)ctrl->occupant->id[ctrl->occupant->i]); 674 ctrl->occupant->i++; 675 } 676 677 /* 678 * continue the walk to the next sibling to look for a match 679 * or to find other nodes if this card is a multi-function card. 680 */ 681 return (DDI_WALK_PRUNECHILD); 682 } 683 684 static void 685 pcihp_create_occupant_props_nolock(dev_info_t *self, dev_t dev, int pci_dev) 686 { 687 struct pcihp_config_ctrl ctrl; 688 hpc_occupant_info_t *occupant; 689 int i; 690 691 occupant = kmem_alloc(sizeof (hpc_occupant_info_t), KM_SLEEP); 692 occupant->i = 0; 693 694 ctrl.flags = 0; 695 ctrl.dip = NULL; 696 ctrl.rv = NDI_SUCCESS; 697 ctrl.pci_dev = pci_dev; 698 ctrl.op = 55; /* should define DRYRUN */ 699 ctrl.occupant = occupant; 700 701 ddi_walk_devs(ddi_get_child(self), pcihp_list_occupants, 702 (void *)&ctrl); 703 704 if (occupant->i == 0) { 705 /* no occupants right now, need to create stub property */ 706 char *c[] = { "" }; 707 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 708 c, 1); 709 } else { 710 (void) ddi_prop_update_string_array(dev, self, "pci-occupant", 711 occupant->id, occupant->i); 712 } 713 for (i = 0; i < occupant->i; i++) { 714 kmem_free(occupant->id[i], sizeof (char[MAXPATHLEN])); 715 } 716 717 kmem_free(occupant, sizeof (hpc_occupant_info_t)); 718 } 719 720 static void 721 pcihp_create_occupant_props(dev_info_t *self, dev_t dev, int pci_dev) 722 { 723 int circular; 724 725 ndi_devi_enter(self, &circular); 726 pcihp_create_occupant_props_nolock(self, dev, pci_dev); 727 ndi_devi_exit(self, circular); 728 } 729 730 static void 731 pcihp_delete_occupant_props(dev_info_t *dip, dev_t dev) 732 { 733 if (ddi_prop_remove(dev, dip, "pci-occupant") 734 != DDI_PROP_SUCCESS) 735 return; /* add error handling */ 736 737 } 738 739 /* 740 * pcihp_ioctl: devctl hotplug controls 741 */ 742 /* ARGSUSED */ 743 static int 744 pcihp_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, 745 int *rvalp) 746 { 747 pcihp_t *pcihp_p; 748 dev_info_t *self; 749 struct devctl_iocdata *dcp; 750 uint_t bus_state; 751 int rv = 0; 752 int pci_dev; 753 struct pcihp_slotinfo *slotinfop; 754 hpc_slot_state_t rstate; 755 devctl_ap_state_t ap_state; 756 struct hpc_control_data hpc_ctrldata; 757 struct hpc_led_info led_info; 758 time_t time; 759 int state_locking; 760 int state_unlocking; 761 int rval; 762 char *pathname = NULL; 763 764 /* 765 * read devctl ioctl data before soft state retrieval 766 */ 767 if ((cmd != DEVCTL_AP_CONTROL) && 768 ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS) 769 return (EFAULT); 770 771 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)dev, 772 (void **)&self) != DDI_SUCCESS) { 773 if (cmd != DEVCTL_AP_CONTROL) 774 ndi_dc_freehdl(dcp); 775 return (ENXIO); 776 } 777 778 switch (cmd) { 779 case DEVCTL_AP_INSERT: 780 case DEVCTL_AP_REMOVE: 781 case DEVCTL_AP_CONNECT: 782 case DEVCTL_AP_DISCONNECT: 783 case DEVCTL_AP_CONFIGURE: 784 case DEVCTL_AP_UNCONFIGURE: 785 case DEVCTL_AP_GETSTATE: 786 case DEVCTL_AP_CONTROL: 787 state_locking = PCIHP_DR_SLOT_ENTER; 788 state_unlocking = PCIHP_DR_SLOT_EXIT; 789 break; 790 default: 791 state_locking = PCIHP_DR_NOOP; 792 state_unlocking = PCIHP_DR_NOOP; 793 break; 794 } 795 796 pcihp_p = pcihp_get_soft_state(self, state_locking, &rval); 797 ASSERT(pcihp_p != NULL); 798 799 if (rval == PCIHP_FAILURE) { 800 (void) ddi_pathname(pcihp_p->dip, pathname); 801 PCIHP_DEBUG((CE_WARN, "Hot Plug bus %s instance is unconfigured" 802 " while slot activity is requested\n", pathname)); 803 if (cmd != DEVCTL_AP_CONTROL) 804 ndi_dc_freehdl(dcp); 805 return (EBUSY); 806 } 807 808 /* 809 * For attachment points the lower 8 bits of the minor number is the 810 * PCI device number. 811 */ 812 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 813 814 /* 815 * We can use the generic implementation for these ioctls 816 */ 817 switch (cmd) { 818 case DEVCTL_DEVICE_GETSTATE: 819 case DEVCTL_DEVICE_ONLINE: 820 case DEVCTL_DEVICE_OFFLINE: 821 case DEVCTL_BUS_GETSTATE: 822 rv = ndi_devctl_ioctl(self, cmd, arg, mode, 0); 823 ndi_dc_freehdl(dcp); 824 return (rv); 825 default: 826 break; 827 } 828 829 switch (cmd) { 830 831 case DEVCTL_DEVICE_RESET: 832 rv = ENOTSUP; 833 break; 834 835 case DEVCTL_BUS_QUIESCE: 836 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 837 if (bus_state == BUS_QUIESCED) 838 break; 839 (void) ndi_set_bus_state(self, BUS_QUIESCED); 840 break; 841 842 case DEVCTL_BUS_UNQUIESCE: 843 if (ndi_get_bus_state(self, &bus_state) == NDI_SUCCESS) 844 if (bus_state == BUS_ACTIVE) 845 break; 846 (void) ndi_set_bus_state(self, BUS_ACTIVE); 847 break; 848 849 case DEVCTL_BUS_RESET: 850 rv = ENOTSUP; 851 break; 852 853 case DEVCTL_BUS_RESETALL: 854 rv = ENOTSUP; 855 break; 856 857 case DEVCTL_AP_CONNECT: 858 case DEVCTL_AP_DISCONNECT: 859 /* 860 * CONNECT(DISCONNECT) the hot plug slot to(from) the bus. 861 * 862 * For cPCI slots this operation is a nop so the HPC 863 * driver may return success if it is a valid operation. 864 */ 865 case DEVCTL_AP_INSERT: 866 case DEVCTL_AP_REMOVE: 867 /* 868 * Prepare the slot for INSERT/REMOVE operation. 869 */ 870 871 /* 872 * check for valid request: 873 * 1. It is a hotplug slot. 874 * 2. The slot has no occupant that is in 875 * the 'configured' state. 876 */ 877 if (pci_dev >= PCI_MAX_DEVS) { 878 rv = ENXIO; 879 break; 880 } 881 slotinfop = &pcihp_p->slotinfo[pci_dev]; 882 883 mutex_enter(&slotinfop->slot_mutex); 884 885 if ((slotinfop->slot_hdl == NULL) || 886 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 887 rv = ENXIO; 888 mutex_exit(&slotinfop->slot_mutex); 889 break; 890 } 891 892 /* the slot occupant must be in the UNCONFIGURED state */ 893 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 894 rv = EINVAL; 895 mutex_exit(&slotinfop->slot_mutex); 896 break; 897 } 898 /* 899 * Call the HPC driver to perform the operation on the slot. 900 */ 901 902 switch (cmd) { 903 case DEVCTL_AP_INSERT: 904 rv = hpc_nexus_insert(slotinfop->slot_hdl, NULL, 0); 905 break; 906 case DEVCTL_AP_REMOVE: 907 rv = hpc_nexus_remove(slotinfop->slot_hdl, NULL, 0); 908 break; 909 case DEVCTL_AP_CONNECT: 910 rv = hpc_nexus_connect(slotinfop->slot_hdl, NULL, 0); 911 if (rv == HPC_SUCCESS) { 912 slotinfop->rstate = AP_RSTATE_CONNECTED; 913 914 if (drv_getparm(TIME, (void *)&time) != 915 DDI_SUCCESS) 916 slotinfop->last_change = (time_t)-1; 917 else 918 slotinfop->last_change = (time32_t)time; 919 920 slotinfop = &pcihp_p->slotinfo[pci_dev]; 921 pcihp_gen_sysevent(slotinfop->name, 922 PCIHP_DR_AP_STATE_CHANGE, 923 SE_NO_HINT, pcihp_p->dip, 924 KM_SLEEP); 925 } 926 break; 927 case DEVCTL_AP_DISCONNECT: 928 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, NULL, 0); 929 if (rv == HPC_SUCCESS) { 930 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 931 932 if (drv_getparm(TIME, (void *)&time) != 933 DDI_SUCCESS) 934 slotinfop->last_change = (time_t)-1; 935 else 936 slotinfop->last_change = (time32_t)time; 937 938 slotinfop = &pcihp_p->slotinfo[pci_dev]; 939 pcihp_gen_sysevent(slotinfop->name, 940 PCIHP_DR_AP_STATE_CHANGE, 941 SE_NO_HINT, pcihp_p->dip, 942 KM_SLEEP); 943 } 944 break; 945 } 946 mutex_exit(&slotinfop->slot_mutex); 947 948 switch (rv) { 949 case HPC_ERR_INVALID: 950 rv = ENXIO; 951 break; 952 case HPC_ERR_NOTSUPPORTED: 953 rv = ENOTSUP; 954 break; 955 case HPC_ERR_FAILED: 956 rv = EIO; 957 break; 958 } 959 960 break; 961 962 case DEVCTL_AP_CONFIGURE: 963 /* 964 * ************************************** 965 * CONFIGURE the occupant in the slot. 966 * ************************************** 967 */ 968 slotinfop = &pcihp_p->slotinfo[pci_dev]; 969 970 mutex_enter(&slotinfop->slot_mutex); 971 972 rv = pcihp_configure_ap(pcihp_p, pci_dev); 973 if (rv == HPC_SUCCESS) { 974 pcihp_gen_sysevent(slotinfop->name, 975 PCIHP_DR_AP_STATE_CHANGE, 976 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 977 pcihp_create_occupant_props(self, dev, pci_dev); 978 } 979 mutex_exit(&slotinfop->slot_mutex); 980 981 break; 982 983 case DEVCTL_AP_UNCONFIGURE: 984 /* 985 * ************************************** 986 * UNCONFIGURE the occupant in the slot. 987 * ************************************** 988 */ 989 slotinfop = &pcihp_p->slotinfo[pci_dev]; 990 991 mutex_enter(&slotinfop->slot_mutex); 992 993 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 994 995 if (rv == HPC_SUCCESS) { 996 pcihp_gen_sysevent(slotinfop->name, 997 PCIHP_DR_AP_STATE_CHANGE, 998 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 999 pcihp_delete_occupant_props(pcihp_p->dip, dev); 1000 } 1001 mutex_exit(&slotinfop->slot_mutex); 1002 1003 break; 1004 1005 case DEVCTL_AP_GETSTATE: 1006 { 1007 int mutex_held; 1008 1009 /* 1010 * return the state of Attachment Point. 1011 * 1012 * If the occupant is in UNCONFIGURED state then 1013 * we should get the receptacle state from the 1014 * HPC driver because the receptacle state 1015 * maintained in the nexus may not be accurate. 1016 */ 1017 1018 /* 1019 * check for valid request: 1020 * 1. It is a hotplug slot. 1021 */ 1022 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1023 1024 /* try to acquire the slot mutex */ 1025 mutex_held = mutex_tryenter(&slotinfop->slot_mutex); 1026 1027 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1028 rv = ENXIO; 1029 if (mutex_held) { 1030 mutex_exit(&slotinfop->slot_mutex); 1031 } 1032 break; 1033 } 1034 1035 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 1036 if (hpc_nexus_control(slotinfop->slot_hdl, 1037 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1038 rv = EIO; 1039 if (mutex_held) 1040 mutex_exit(&slotinfop->slot_mutex); 1041 break; 1042 } 1043 slotinfop->rstate = (ap_rstate_t)rstate; 1044 } 1045 1046 ap_state.ap_rstate = slotinfop->rstate; 1047 ap_state.ap_ostate = slotinfop->ostate; 1048 ap_state.ap_condition = slotinfop->condition; 1049 ap_state.ap_last_change = slotinfop->last_change; 1050 ap_state.ap_error_code = 0; /* XXX */ 1051 if (mutex_held) 1052 ap_state.ap_in_transition = 0; /* AP is not busy */ 1053 else 1054 ap_state.ap_in_transition = 1; /* AP is busy */ 1055 1056 if (mutex_held) 1057 mutex_exit(&slotinfop->slot_mutex); 1058 1059 /* copy the return-AP-state information to the user space */ 1060 if (ndi_dc_return_ap_state(&ap_state, dcp) != NDI_SUCCESS) 1061 rv = EFAULT; 1062 1063 break; 1064 1065 } 1066 case DEVCTL_AP_CONTROL: 1067 /* 1068 * HPC control functions: 1069 * HPC_CTRL_ENABLE_SLOT/HPC_CTRL_DISABLE_SLOT 1070 * Changes the state of the slot and preserves 1071 * the state across the reboot. 1072 * HPC_CTRL_ENABLE_AUTOCFG/HPC_CTRL_DISABLE_AUTOCFG 1073 * Enables or disables the auto configuration 1074 * of hot plugged occupant if the hardware 1075 * supports notification of the hot plug 1076 * events. 1077 * HPC_CTRL_GET_LED_STATE/HPC_CTRL_SET_LED_STATE 1078 * Controls the state of an LED. 1079 * HPC_CTRL_GET_SLOT_INFO 1080 * Get slot information data structure 1081 * (hpc_slot_info_t). 1082 * HPC_CTRL_GET_BOARD_TYPE 1083 * Get board type information (hpc_board_type_t). 1084 * HPC_CTRL_GET_CARD_INFO 1085 * Get card information (hpc_card_info_t). 1086 * 1087 * These control functions are used by the cfgadm plug-in 1088 * to implement "-x" and "-v" options. 1089 */ 1090 1091 /* copy user ioctl data first */ 1092 switch (ddi_model_convert_from(mode & FMODELS)) { 1093 case DDI_MODEL_ILP32: { 1094 struct hpc_control32_data hpc_ctrldata32; 1095 1096 if (copyin((void *)arg, (void *)&hpc_ctrldata32, 1097 sizeof (struct hpc_control32_data)) != 0) { 1098 rv = EFAULT; 1099 break; 1100 } 1101 hpc_ctrldata.cmd = hpc_ctrldata32.cmd; 1102 hpc_ctrldata.data = 1103 (void *)(intptr_t)hpc_ctrldata32.data; 1104 break; 1105 } 1106 case DDI_MODEL_NONE: 1107 if (copyin((void *)arg, (void *)&hpc_ctrldata, 1108 sizeof (struct hpc_control_data)) != 0) { 1109 rv = EFAULT; 1110 } 1111 break; 1112 default: 1113 rv = EFAULT; 1114 break; 1115 } 1116 if (rv == EFAULT) 1117 break; 1118 /* 1119 * check for valid request: 1120 * 1. It is a hotplug slot. 1121 */ 1122 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1123 1124 mutex_enter(&slotinfop->slot_mutex); 1125 1126 if (pci_dev >= PCI_MAX_DEVS || slotinfop->slot_hdl == NULL) { 1127 rv = ENXIO; 1128 mutex_exit(&slotinfop->slot_mutex); 1129 break; 1130 } 1131 1132 switch (hpc_ctrldata.cmd) { 1133 1134 case HPC_CTRL_GET_LED_STATE: 1135 /* copy the led info from the user space */ 1136 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1137 sizeof (hpc_led_info_t)) != 0) { 1138 rv = EFAULT; 1139 break; 1140 } 1141 1142 /* get the state of LED information */ 1143 if (hpc_nexus_control(slotinfop->slot_hdl, 1144 HPC_CTRL_GET_LED_STATE, (caddr_t)&led_info) != 0) { 1145 1146 if (rv != ENOTSUP) 1147 rv = EIO; 1148 1149 break; 1150 } 1151 1152 /* copy the led info to the user space */ 1153 if (copyout((void *)&led_info, hpc_ctrldata.data, 1154 sizeof (hpc_led_info_t)) != 0) { 1155 rv = EFAULT; 1156 break; 1157 } 1158 1159 break; 1160 1161 case HPC_CTRL_SET_LED_STATE: 1162 /* copy the led info from the user space */ 1163 if (copyin(hpc_ctrldata.data, (void *)&led_info, 1164 sizeof (hpc_led_info_t)) != 0) { 1165 rv = EFAULT; 1166 break; 1167 } 1168 1169 /* set the state of an LED */ 1170 rv = hpc_nexus_control(slotinfop->slot_hdl, 1171 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 1172 1173 /* 1174 * If the Hotswap Controller does not support 1175 * LED management (as you would find typically 1176 * in the cPCI industry), then we handle the 1177 * blue LED on/off/blink operations, just in 1178 * case it helps slot identification. 1179 */ 1180 if ((rv == HPC_ERR_NOTSUPPORTED) && 1181 (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) { 1182 if (led_info.led != HPC_ATTN_LED) 1183 break; 1184 1185 switch (led_info.state) { 1186 case HPC_LED_OFF: 1187 pcihp_hs_csr_op(pcihp_p, 1188 pci_dev, 1189 HPC_EVENT_SLOT_BLUE_LED_OFF); 1190 rv = 0; 1191 break; 1192 case HPC_LED_ON: 1193 /* 1194 * Please note that leaving 1195 * LED ON could be dangerous 1196 * as it means it is Ok to 1197 * remove the board, which 1198 * is not what we want to 1199 * convey. So it is upto the 1200 * user to take care of this 1201 * situation and usage. 1202 * 1203 * Normally, a Blink command 1204 * is more appropriate for 1205 * identifying a board. 1206 */ 1207 pcihp_hs_csr_op(pcihp_p, 1208 pci_dev, 1209 HPC_EVENT_SLOT_BLUE_LED_ON); 1210 rv = 0; 1211 break; 1212 case HPC_LED_BLINK: 1213 { 1214 int bl; 1215 1216 for (bl = 0; bl < 2; bl++) { 1217 pcihp_hs_csr_op(pcihp_p, 1218 pci_dev, 1219 HPC_EVENT_SLOT_BLUE_LED_ON); 1220 delay(pcihp_cpci_led_blink); 1221 pcihp_hs_csr_op(pcihp_p, 1222 pci_dev, 1223 HPC_EVENT_SLOT_BLUE_LED_OFF); 1224 delay(pcihp_cpci_led_blink); 1225 } 1226 rv = 0; 1227 break; 1228 } 1229 default: 1230 break; 1231 } 1232 } 1233 1234 if (rv == HPC_ERR_FAILED) 1235 rv = EIO; 1236 break; 1237 1238 case HPC_CTRL_ENABLE_SLOT: 1239 1240 /* 1241 * If slot already enabled, do not send a duplicate 1242 * control message to the HPC driver. 1243 */ 1244 if ((slotinfop->slot_flags & PCIHP_SLOT_DISABLED) == 0) 1245 break; 1246 1247 /* tell the HPC driver also */ 1248 if (hpc_nexus_control(slotinfop->slot_hdl, 1249 HPC_CTRL_ENABLE_SLOT, NULL) != HPC_SUCCESS) { 1250 rv = EIO; 1251 break; 1252 } 1253 1254 /* 1255 * Enable the slot for hotplug operations. 1256 */ 1257 slotinfop->slot_flags &= ~PCIHP_SLOT_DISABLED; 1258 1259 slotinfop->condition = AP_COND_UNKNOWN; 1260 1261 /* XXX need to preserve this state across reboot? */ 1262 1263 break; 1264 1265 case HPC_CTRL_DISABLE_SLOT: 1266 1267 /* Do not disable if occupant configured */ 1268 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1269 rv = EAGAIN; 1270 break; 1271 } 1272 1273 /* tell the HPC driver also */ 1274 if (hpc_nexus_control(slotinfop->slot_hdl, 1275 HPC_CTRL_DISABLE_SLOT, NULL) != HPC_SUCCESS) { 1276 rv = EIO; 1277 break; 1278 } 1279 1280 /* 1281 * Disable the slot for hotplug operations. 1282 */ 1283 slotinfop->slot_flags |= PCIHP_SLOT_DISABLED; 1284 1285 slotinfop->condition = AP_COND_UNUSABLE; 1286 1287 /* XXX need to preserve this state across reboot? */ 1288 1289 break; 1290 1291 case HPC_CTRL_ENABLE_AUTOCFG: 1292 /* 1293 * Enable auto configuration on this slot. 1294 */ 1295 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 1296 1297 /* tell the HPC driver also */ 1298 (void) hpc_nexus_control(slotinfop->slot_hdl, 1299 HPC_CTRL_ENABLE_AUTOCFG, NULL); 1300 1301 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1302 pcihp_hs_csr_op(pcihp_p, pci_dev, 1303 HPC_EVENT_ENABLE_ENUM); 1304 break; 1305 1306 case HPC_CTRL_DISABLE_AUTOCFG: 1307 /* 1308 * Disable auto configuration on this slot. 1309 */ 1310 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 1311 1312 /* tell the HPC driver also */ 1313 (void) hpc_nexus_control(slotinfop->slot_hdl, 1314 HPC_CTRL_DISABLE_AUTOCFG, NULL); 1315 1316 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1317 pcihp_hs_csr_op(pcihp_p, pci_dev, 1318 HPC_EVENT_DISABLE_ENUM); 1319 break; 1320 1321 case HPC_CTRL_GET_BOARD_TYPE: 1322 { 1323 hpc_board_type_t board_type; 1324 1325 /* 1326 * Get board type data structure, hpc_board_type_t. 1327 */ 1328 board_type = pcihp_get_board_type(slotinfop); 1329 if (board_type == -1) { 1330 rv = ENXIO; 1331 break; 1332 } 1333 1334 /* copy the board type info to the user space */ 1335 if (copyout((void *)&board_type, hpc_ctrldata.data, 1336 sizeof (hpc_board_type_t)) != 0) { 1337 rv = ENXIO; 1338 break; 1339 } 1340 1341 break; 1342 } 1343 1344 case HPC_CTRL_GET_SLOT_INFO: 1345 { 1346 hpc_slot_info_t slot_info; 1347 1348 /* 1349 * Get slot information structure, hpc_slot_info_t. 1350 */ 1351 slot_info.version = HPC_SLOT_INFO_VERSION; 1352 slot_info.slot_type = slotinfop->slot_type; 1353 slot_info.pci_slot_capabilities = 1354 slotinfop->slot_capabilities; 1355 slot_info.pci_dev_num = (uint16_t)pci_dev; 1356 (void) strcpy(slot_info.pci_slot_name, slotinfop->name); 1357 1358 /* copy the slot info structure to the user space */ 1359 if (copyout((void *)&slot_info, hpc_ctrldata.data, 1360 sizeof (hpc_slot_info_t)) != 0) { 1361 rv = EFAULT; 1362 break; 1363 } 1364 1365 break; 1366 } 1367 1368 case HPC_CTRL_GET_CARD_INFO: 1369 { 1370 hpc_card_info_t card_info; 1371 ddi_acc_handle_t handle; 1372 dev_info_t *cdip; 1373 1374 /* 1375 * Get card information structure, hpc_card_info_t. 1376 */ 1377 1378 /* verify that the card is configured */ 1379 if ((slotinfop->ostate != AP_OSTATE_CONFIGURED) || 1380 ((cdip = pcihp_devi_find(self, 1381 pci_dev, 0)) == NULL)) { 1382 /* 1383 * either the card is not present or 1384 * it is not configured. 1385 */ 1386 rv = ENXIO; 1387 break; 1388 } 1389 1390 /* 1391 * If declared failed, don't allow Config operations. 1392 * Otherwise, if good or failing, it is assumed Ok 1393 * to get config data. 1394 */ 1395 if (slotinfop->condition == AP_COND_FAILED) { 1396 rv = EIO; 1397 break; 1398 } 1399 1400 /* get the information from the PCI config header */ 1401 /* for the function 0. */ 1402 if (pci_config_setup(cdip, &handle) != DDI_SUCCESS) { 1403 rv = EIO; 1404 break; 1405 } 1406 card_info.prog_class = pci_config_get8(handle, 1407 PCI_CONF_PROGCLASS); 1408 card_info.base_class = pci_config_get8(handle, 1409 PCI_CONF_BASCLASS); 1410 card_info.sub_class = pci_config_get8(handle, 1411 PCI_CONF_SUBCLASS); 1412 card_info.header_type = pci_config_get8(handle, 1413 PCI_CONF_HEADER); 1414 pci_config_teardown(&handle); 1415 1416 /* copy the card info structure to the user space */ 1417 if (copyout((void *)&card_info, hpc_ctrldata.data, 1418 sizeof (hpc_card_info_t)) != 0) { 1419 rv = EFAULT; 1420 break; 1421 } 1422 1423 break; 1424 } 1425 1426 default: 1427 rv = EINVAL; 1428 break; 1429 } 1430 1431 mutex_exit(&slotinfop->slot_mutex); 1432 1433 break; 1434 1435 default: 1436 rv = ENOTTY; 1437 } 1438 1439 if (cmd != DEVCTL_AP_CONTROL) 1440 ndi_dc_freehdl(dcp); 1441 1442 (void) pcihp_get_soft_state(self, state_unlocking, &rval); 1443 1444 return (rv); 1445 } 1446 1447 /* 1448 * ************************************** 1449 * CONFIGURE the occupant in the slot. 1450 * ************************************** 1451 */ 1452 static int 1453 pcihp_configure_ap(pcihp_t *pcihp_p, int pci_dev) 1454 { 1455 dev_info_t *self = pcihp_p->dip; 1456 int rv = HPC_SUCCESS; 1457 struct pcihp_slotinfo *slotinfop; 1458 hpc_slot_state_t rstate; 1459 struct pcihp_config_ctrl ctrl; 1460 int circular_count; 1461 time_t time; 1462 1463 /* 1464 * check for valid request: 1465 * 1. It is a hotplug slot. 1466 * 2. The receptacle is in the CONNECTED state. 1467 */ 1468 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1469 1470 1471 1472 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1473 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1474 1475 return (ENXIO); 1476 } 1477 1478 /* 1479 * If the occupant is already in (partially?) configured 1480 * state then call the ndi_devi_online() on the device 1481 * subtree(s) for this attachment point. 1482 */ 1483 1484 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1485 ctrl.flags = PCIHP_CFG_CONTINUE; 1486 ctrl.rv = NDI_SUCCESS; 1487 ctrl.dip = NULL; 1488 ctrl.pci_dev = pci_dev; 1489 ctrl.op = PCIHP_ONLINE; 1490 1491 ndi_devi_enter(self, &circular_count); 1492 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1493 (void *)&ctrl); 1494 ndi_devi_exit(self, circular_count); 1495 1496 if (ctrl.rv != NDI_SUCCESS) { 1497 /* 1498 * one or more of the devices are not 1499 * onlined. How is this to be reported? 1500 */ 1501 cmn_err(CE_WARN, 1502 "pcihp (%s%d): failed to attach one or" 1503 " more drivers for the card in the slot %s", 1504 ddi_driver_name(self), ddi_get_instance(self), 1505 slotinfop->name); 1506 /* rv = EFAULT; */ 1507 } 1508 /* tell HPC driver that the occupant is configured */ 1509 (void) hpc_nexus_control(slotinfop->slot_hdl, 1510 HPC_CTRL_DEV_CONFIGURED, NULL); 1511 1512 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1513 slotinfop->last_change = (time_t)-1; 1514 else 1515 slotinfop->last_change = (time32_t)time; 1516 1517 1518 return (rv); 1519 } 1520 1521 /* 1522 * Occupant is in the UNCONFIGURED state. 1523 */ 1524 1525 /* Check if the receptacle is in the CONNECTED state. */ 1526 if (hpc_nexus_control(slotinfop->slot_hdl, 1527 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) { 1528 1529 return (ENXIO); 1530 } 1531 1532 if (rstate == HPC_SLOT_EMPTY) { 1533 /* error. slot is empty */ 1534 1535 return (ENXIO); 1536 } 1537 1538 if (rstate != HPC_SLOT_CONNECTED) { 1539 /* error. either the slot is empty or connect failed */ 1540 1541 return (ENXIO); 1542 } 1543 1544 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 1545 1546 /* Turn INS and LED off, and start configuration. */ 1547 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1548 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 1549 if (pcihp_cpci_blue_led) 1550 pcihp_hs_csr_op(pcihp_p, pci_dev, 1551 HPC_EVENT_SLOT_BLUE_LED_OFF); 1552 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 1553 } 1554 1555 (void) hpc_nexus_control(slotinfop->slot_hdl, 1556 HPC_CTRL_DEV_CONFIG_START, NULL); 1557 1558 /* 1559 * Call the configurator to configure the card. 1560 */ 1561 if (pcicfg_configure(self, pci_dev) != PCICFG_SUCCESS) { 1562 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1563 if (pcihp_cpci_blue_led) 1564 pcihp_hs_csr_op(pcihp_p, pci_dev, 1565 HPC_EVENT_SLOT_BLUE_LED_ON); 1566 pcihp_hs_csr_op(pcihp_p, pci_dev, 1567 HPC_EVENT_SLOT_UNCONFIGURE); 1568 } 1569 /* tell HPC driver occupant configure Error */ 1570 (void) hpc_nexus_control(slotinfop->slot_hdl, 1571 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 1572 1573 return (EIO); 1574 } 1575 1576 /* record the occupant state as CONFIGURED */ 1577 slotinfop->ostate = AP_OSTATE_CONFIGURED; 1578 slotinfop->condition = AP_COND_OK; 1579 1580 /* now, online all the devices in the AP */ 1581 ctrl.flags = PCIHP_CFG_CONTINUE; 1582 ctrl.rv = NDI_SUCCESS; 1583 ctrl.dip = NULL; 1584 ctrl.pci_dev = pci_dev; 1585 ctrl.op = PCIHP_ONLINE; 1586 1587 ndi_devi_enter(self, &circular_count); 1588 ddi_walk_devs(ddi_get_child(self), pcihp_configure, (void *)&ctrl); 1589 ndi_devi_exit(self, circular_count); 1590 1591 if (ctrl.rv != NDI_SUCCESS) { 1592 /* 1593 * one or more of the devices are not 1594 * ONLINE'd. How is this to be 1595 * reported? 1596 */ 1597 cmn_err(CE_WARN, 1598 "pcihp (%s%d): failed to attach one or" 1599 " more drivers for the card in the slot %s", 1600 ddi_driver_name(pcihp_p->dip), 1601 ddi_get_instance(pcihp_p->dip), 1602 slotinfop->name); 1603 /* rv = EFAULT; */ 1604 } 1605 /* store HS_CSR location. No events, jut a read operation. */ 1606 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) 1607 pcihp_hs_csr_op(pcihp_p, pci_dev, -1); 1608 1609 /* tell HPC driver that the occupant is configured */ 1610 (void) hpc_nexus_control(slotinfop->slot_hdl, 1611 HPC_CTRL_DEV_CONFIGURED, NULL); 1612 1613 1614 return (rv); 1615 } 1616 1617 /* 1618 * ************************************** 1619 * UNCONFIGURE the occupant in the slot. 1620 * ************************************** 1621 */ 1622 static int 1623 pcihp_unconfigure_ap(pcihp_t *pcihp_p, int pci_dev) 1624 { 1625 dev_info_t *self = pcihp_p->dip; 1626 int rv = HPC_SUCCESS; 1627 struct pcihp_slotinfo *slotinfop; 1628 struct pcihp_config_ctrl ctrl; 1629 int circular_count; 1630 time_t time; 1631 1632 /* 1633 * check for valid request: 1634 * 1. It is a hotplug slot. 1635 * 2. The occupant is in the CONFIGURED state. 1636 */ 1637 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1638 1639 1640 1641 if ((pci_dev >= PCI_MAX_DEVS) || (slotinfop->slot_hdl == NULL) || 1642 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 1643 1644 return (ENXIO); 1645 } 1646 /* 1647 * The following may not need to be there, as we should 1648 * support unconfiguring of boards and free resources 1649 * even when the board is not hotswappable. But this is 1650 * the only way, we may be able to tell the system 1651 * administrator that it is not a hotswap board since 1652 * disconnect operation is never called. 1653 * This way we help the system administrator from not 1654 * accidentally removing a non hotswap board and 1655 * possibly destroying it. May be this behavior can 1656 * be a default, and can be enabled or disabled via 1657 * a global flag. 1658 */ 1659 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1660 if (slotinfop->slot_flags & PCIHP_SLOT_DEV_NON_HOTPLUG) { 1661 /* Operation unsupported if no HS board/slot */ 1662 return (ENOTSUP); 1663 } 1664 } 1665 1666 /* 1667 * If the occupant is in the CONFIGURED state then 1668 * call the configurator to unconfigure the slot. 1669 */ 1670 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 1671 1672 /* 1673 * since potential state change is imminent mask 1674 * enum events to prevent the slot from being re-configured 1675 */ 1676 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 1677 1678 /* 1679 * Detach all the drivers for the devices in the 1680 * slot. Call pcihp_configure() to do this. 1681 */ 1682 ctrl.flags = 0; 1683 ctrl.rv = NDI_SUCCESS; 1684 ctrl.dip = NULL; 1685 ctrl.pci_dev = pci_dev; 1686 ctrl.op = PCIHP_OFFLINE; 1687 1688 (void) devfs_clean(self, NULL, DV_CLEAN_FORCE); 1689 ndi_devi_enter(self, &circular_count); 1690 ddi_walk_devs(ddi_get_child(self), pcihp_configure, 1691 (void *)&ctrl); 1692 ndi_devi_exit(self, circular_count); 1693 1694 if (ctrl.rv != NDI_SUCCESS) { 1695 /* 1696 * Failed to detach one or more drivers 1697 * Restore the state of drivers which 1698 * are offlined during this operation. 1699 */ 1700 ctrl.flags = 0; 1701 ctrl.rv = NDI_SUCCESS; 1702 ctrl.dip = NULL; 1703 ctrl.pci_dev = pci_dev; 1704 ctrl.op = PCIHP_ONLINE; 1705 1706 ndi_devi_enter(self, &circular_count); 1707 ddi_walk_devs(ddi_get_child(self), 1708 pcihp_configure, (void *)&ctrl); 1709 ndi_devi_exit(self, circular_count); 1710 1711 /* tell HPC driver that the occupant is Busy */ 1712 (void) hpc_nexus_control(slotinfop->slot_hdl, 1713 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1714 1715 rv = EBUSY; 1716 } else { 1717 (void) hpc_nexus_control(slotinfop->slot_hdl, 1718 HPC_CTRL_DEV_UNCONFIG_START, NULL); 1719 1720 if (pcicfg_unconfigure(self, 1721 pci_dev) == PCICFG_SUCCESS) { 1722 /* 1723 * Now that resources are freed, 1724 * clear EXT and Turn LED ON. 1725 */ 1726 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 1727 pcihp_hs_csr_op(pcihp_p, pci_dev, 1728 HPC_EVENT_SLOT_UNCONFIGURE); 1729 if (pcihp_cpci_blue_led) 1730 pcihp_hs_csr_op(pcihp_p, 1731 pci_dev, 1732 HPC_EVENT_SLOT_BLUE_LED_ON); 1733 slotinfop->hs_csr_location = 0; 1734 slotinfop->slot_flags &= 1735 ~(PCIHP_SLOT_DEV_NON_HOTPLUG| 1736 PCIHP_SLOT_ENUM_EXT_PENDING); 1737 } 1738 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 1739 slotinfop->condition = AP_COND_UNKNOWN; 1740 /* 1741 * send the notification of state change 1742 * to the HPC driver. 1743 */ 1744 (void) hpc_nexus_control(slotinfop->slot_hdl, 1745 HPC_CTRL_DEV_UNCONFIGURED, 1746 NULL); 1747 } else { 1748 /* tell HPC driver occupant unconfigure Error */ 1749 (void) hpc_nexus_control(slotinfop->slot_hdl, 1750 HPC_CTRL_DEV_UNCONFIG_FAILURE, NULL); 1751 1752 rv = EIO; 1753 } 1754 } 1755 } 1756 1757 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 1758 slotinfop->last_change = (time_t)-1; 1759 else 1760 slotinfop->last_change = (time32_t)time; 1761 1762 1763 1764 /* unmask enum events again */ 1765 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 1766 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 1767 } 1768 1769 return (rv); 1770 } 1771 1772 /* 1773 * Accessor function to return pointer to the pci hotplug 1774 * cb_ops structure. 1775 */ 1776 struct cb_ops * 1777 pcihp_get_cb_ops() 1778 { 1779 return (&pcihp_cb_ops); 1780 } 1781 1782 /* 1783 * Setup function to initialize hot plug feature. Returns DDI_SUCCESS 1784 * for successful initialization, otherwise it returns DDI_FAILURE. 1785 * 1786 * It is assumed that this this function is called from the attach() 1787 * entry point of the PCI nexus driver. 1788 */ 1789 1790 int 1791 pcihp_init(dev_info_t *dip) 1792 { 1793 pcihp_t *pcihp_p; 1794 int i; 1795 caddr_t enum_data; 1796 int enum_size; 1797 int rv; 1798 1799 mutex_enter(&pcihp_open_mutex); 1800 1801 /* 1802 * Make sure that it is not already initialized. 1803 */ 1804 if (pcihp_get_soft_state(dip, PCIHP_DR_NOOP, &rv) != NULL) { 1805 cmn_err(CE_WARN, "%s%d: pcihp instance already initialized!", 1806 ddi_driver_name(dip), ddi_get_instance(dip)); 1807 goto cleanup; 1808 } 1809 1810 /* 1811 * Initialize soft state structure for the bus instance. 1812 */ 1813 if ((pcihp_p = pcihp_create_soft_state(dip)) == NULL) { 1814 cmn_err(CE_WARN, "%s%d: can't allocate pcihp structure", 1815 ddi_driver_name(dip), ddi_get_instance(dip)); 1816 goto cleanup; 1817 } 1818 1819 pcihp_p->soft_state = PCIHP_SOFT_STATE_CLOSED; 1820 /* XXX if bus is running at 66Mhz then set PCI_BUS_66MHZ bit */ 1821 pcihp_p->bus_flags = 0; /* XXX FIX IT */ 1822 1823 /* 1824 * If a platform wishes to implement Radial ENUM# routing 1825 * a property "enum-impl" must be presented to us with a 1826 * string value "radial". 1827 * This helps us not go for polling operation (default) 1828 * during a ENUM# event. 1829 */ 1830 if (ddi_getlongprop(DDI_DEV_T_ANY, dip, 0, "enum-impl", 1831 (caddr_t)&enum_data, &enum_size) == DDI_PROP_SUCCESS) { 1832 if (strcmp(enum_data, "radial") == 0) { 1833 pcihp_p->bus_flags |= PCIHP_BUS_ENUM_RADIAL; 1834 } 1835 kmem_free(enum_data, enum_size); 1836 } 1837 1838 for (i = 0; i < PCI_MAX_DEVS; i++) { 1839 /* initialize slot mutex */ 1840 mutex_init(&pcihp_p->slotinfo[i].slot_mutex, NULL, 1841 MUTEX_DRIVER, NULL); 1842 } 1843 1844 /* 1845 * register the bus instance with the HPS framework. 1846 */ 1847 if (hpc_nexus_register_bus(dip, pcihp_new_slot_state, 0) != 0) { 1848 cmn_err(CE_WARN, "%s%d: failed to register the bus with HPS", 1849 ddi_driver_name(dip), ddi_get_instance(dip)); 1850 goto cleanup1; 1851 } 1852 1853 /* 1854 * Create the "devctl" minor for hot plug support. The minor 1855 * number for "devctl" node is in the same format as the AP 1856 * minor nodes. 1857 */ 1858 if (ddi_create_minor_node(dip, "devctl", S_IFCHR, 1859 PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), PCIHP_DEVCTL_MINOR), 1860 DDI_NT_NEXUS, 0) != DDI_SUCCESS) 1861 goto cleanup2; 1862 1863 /* 1864 * Setup resource maps for this bus node. (Note: This can 1865 * be done from the attach(9E) of the nexus itself.) 1866 */ 1867 (void) pci_resource_setup(dip); 1868 1869 pcihp_p->bus_state = PCIHP_BUS_CONFIGURED; 1870 1871 mutex_exit(&pcihp_open_mutex); 1872 1873 return (DDI_SUCCESS); 1874 1875 cleanup2: 1876 (void) hpc_nexus_unregister_bus(dip); 1877 cleanup1: 1878 for (i = 0; i < PCI_MAX_DEVS; i++) 1879 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1880 pcihp_destroy_soft_state(dip); 1881 cleanup: 1882 mutex_exit(&pcihp_open_mutex); 1883 return (DDI_FAILURE); 1884 } 1885 1886 /* 1887 * pcihp_uninit() 1888 * 1889 * The bus instance is going away, cleanup any data associated with 1890 * the management of hot plug slots. It is assumed that this function 1891 * is called from detach() routine of the PCI nexus driver. Also, 1892 * it is assumed that no devices on the bus are in the configured state. 1893 */ 1894 int 1895 pcihp_uninit(dev_info_t *dip) 1896 { 1897 pcihp_t *pcihp_p; 1898 int i, j; 1899 int rv; 1900 1901 mutex_enter(&pcihp_open_mutex); 1902 /* get a pointer to the soft state structure */ 1903 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_BUS_UNCONFIGURE, &rv); 1904 ASSERT(pcihp_p != NULL); 1905 1906 /* slot mutexes should prevent any configure/unconfigure access */ 1907 for (i = 0; i < PCI_MAX_DEVS; i++) { 1908 if (!mutex_tryenter(&pcihp_p->slotinfo[i].slot_mutex)) { 1909 for (j = 0; j < i; j++) { 1910 mutex_exit(&pcihp_p->slotinfo[j].slot_mutex); 1911 } 1912 mutex_exit(&pcihp_open_mutex); 1913 return (DDI_FAILURE); 1914 } 1915 } 1916 1917 if ((pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) || 1918 (rv == PCIHP_FAILURE)) { 1919 cmn_err(CE_WARN, "%s%d: pcihp instance is busy", 1920 ddi_driver_name(dip), ddi_get_instance(dip)); 1921 for (i = 0; i < PCI_MAX_DEVS; i++) { 1922 mutex_exit(&pcihp_p->slotinfo[i].slot_mutex); 1923 } 1924 mutex_exit(&pcihp_open_mutex); 1925 return (DDI_FAILURE); 1926 } 1927 1928 /* 1929 * Unregister the bus with the HPS. 1930 * 1931 * (Note: It is assumed that the HPS framework uninstalls 1932 * event handlers for all the hot plug slots on this bus.) 1933 */ 1934 (void) hpc_nexus_unregister_bus(dip); 1935 1936 /* Free up any kmem_alloc'd memory for slot info table. */ 1937 for (i = 0; i < PCI_MAX_DEVS; i++) { 1938 /* free up slot name strings */ 1939 if (pcihp_p->slotinfo[i].name != NULL) 1940 kmem_free(pcihp_p->slotinfo[i].name, 1941 strlen(pcihp_p->slotinfo[i].name) + 1); 1942 } 1943 1944 /* destroy slot mutexes */ 1945 for (i = 0; i < PCI_MAX_DEVS; i++) 1946 mutex_destroy(&pcihp_p->slotinfo[i].slot_mutex); 1947 1948 ddi_remove_minor_node(dip, NULL); 1949 1950 /* free up the soft state structure */ 1951 pcihp_destroy_soft_state(dip); 1952 1953 /* 1954 * Destroy resource maps for this bus node. (Note: This can 1955 * be done from the detach(9E) of the nexus itself.) 1956 */ 1957 (void) pci_resource_destroy(dip); 1958 1959 mutex_exit(&pcihp_open_mutex); 1960 1961 return (DDI_SUCCESS); 1962 } 1963 1964 /* 1965 * pcihp_new_slot_state() 1966 * 1967 * This function is called by the HPS when it finds a hot plug 1968 * slot is added or being removed from the hot plug framework. 1969 * It returns 0 for success and HPC_ERR_FAILED for errors. 1970 */ 1971 static int 1972 pcihp_new_slot_state(dev_info_t *dip, hpc_slot_t hdl, 1973 hpc_slot_info_t *slot_info, int slot_state) 1974 { 1975 pcihp_t *pcihp_p; 1976 struct pcihp_slotinfo *slotinfop; 1977 int pci_dev; 1978 minor_t ap_minor; 1979 major_t ap_major; 1980 int rv = 0; 1981 time_t time; 1982 int auto_enable = 1; 1983 int rval; 1984 1985 /* get a pointer to the soft state structure */ 1986 pcihp_p = pcihp_get_soft_state(dip, PCIHP_DR_SLOT_ENTER, &rval); 1987 ASSERT(pcihp_p != NULL); 1988 1989 if (rval == PCIHP_FAILURE) { 1990 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 1991 " while slot activity is requested\n")); 1992 return (HPC_ERR_FAILED); 1993 } 1994 1995 pci_dev = slot_info->pci_dev_num; 1996 slotinfop = &pcihp_p->slotinfo[pci_dev]; 1997 1998 mutex_enter(&slotinfop->slot_mutex); 1999 2000 switch (slot_state) { 2001 2002 case HPC_SLOT_ONLINE: 2003 2004 /* 2005 * Make sure the slot is not already ONLINE (paranoia?). 2006 * (Note: Should this be simply an ASSERTION?) 2007 */ 2008 if (slotinfop->slot_hdl != NULL) { 2009 PCIHP_DEBUG((CE_WARN, 2010 "pcihp (%s%d): pci slot (dev %x) already ONLINE!!", 2011 ddi_driver_name(dip), ddi_get_instance(dip), 2012 pci_dev)); 2013 rv = HPC_ERR_FAILED; 2014 break; 2015 } 2016 2017 /* 2018 * Add the hot plug slot to the bus. 2019 */ 2020 2021 /* create the AP minor node */ 2022 ap_minor = PCIHP_AP_MINOR_NUM(ddi_get_instance(dip), pci_dev); 2023 if (ddi_create_minor_node(dip, slot_info->pci_slot_name, 2024 S_IFCHR, ap_minor, 2025 DDI_NT_PCI_ATTACHMENT_POINT, 0) == DDI_FAILURE) { 2026 cmn_err(CE_WARN, 2027 "pcihp (%s%d): ddi_create_minor_node failed" 2028 " for pci dev %x", ddi_driver_name(dip), 2029 ddi_get_instance(dip), pci_dev); 2030 rv = HPC_ERR_FAILED; 2031 break; 2032 } 2033 2034 /* save the slot handle */ 2035 slotinfop->slot_hdl = hdl; 2036 2037 /* setup event handler for all hardware events on the slot */ 2038 ap_major = ddi_driver_major(dip); 2039 if (hpc_install_event_handler(hdl, -1, pcihp_event_handler, 2040 (caddr_t)makedevice(ap_major, ap_minor)) != 0) { 2041 cmn_err(CE_WARN, 2042 "pcihp (%s%d): install event handler failed" 2043 " for pci dev %x", ddi_driver_name(dip), 2044 ddi_get_instance(dip), pci_dev); 2045 rv = HPC_ERR_FAILED; 2046 break; 2047 } 2048 slotinfop->event_mask = (uint32_t)0xFFFFFFFF; 2049 2050 pcihp_create_occupant_props(dip, makedevice(ap_major, 2051 ap_minor), pci_dev); 2052 2053 /* set default auto configuration enabled flag for this slot */ 2054 slotinfop->slot_flags = pcihp_autocfg_enabled; 2055 2056 /* copy the slot information */ 2057 slotinfop->name = 2058 kmem_alloc(strlen(slot_info->pci_slot_name) + 1, KM_SLEEP); 2059 (void) strcpy(slotinfop->name, slot_info->pci_slot_name); 2060 slotinfop->slot_type = slot_info->slot_type; 2061 slotinfop->hs_csr_location = 0; 2062 slotinfop->slot_capabilities = slot_info->pci_slot_capabilities; 2063 if (slot_info->slot_flags & HPC_SLOT_NO_AUTO_ENABLE) 2064 auto_enable = 0; 2065 2066 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2067 pci_devlink_flags |= (1 << pci_dev); 2068 (void) ddi_prop_update_int(DDI_DEV_T_NONE, 2069 dip, "ap-names", pci_devlink_flags); 2070 } 2071 2072 PCIHP_DEBUG((CE_NOTE, 2073 "pcihp (%s%d): pci slot (dev %x) ONLINE\n", 2074 ddi_driver_name(dip), ddi_get_instance(dip), pci_dev)); 2075 2076 /* 2077 * The slot may have an occupant that was configured 2078 * at boot time. If we find a devinfo node in the tree 2079 * for this slot (i.e pci device number) then we 2080 * record the occupant state as CONFIGURED. 2081 */ 2082 if (pcihp_devi_find(dip, pci_dev, 0) != NULL) { 2083 /* we have a configured occupant */ 2084 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2085 slotinfop->rstate = AP_RSTATE_CONNECTED; 2086 slotinfop->condition = AP_COND_OK; 2087 2088 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2089 /* this will set slot flags too. */ 2090 (void) pcihp_get_board_type(slotinfop); 2091 pcihp_hs_csr_op(pcihp_p, pci_dev, 2092 HPC_EVENT_SLOT_CONFIGURE); 2093 if (pcihp_cpci_blue_led) 2094 pcihp_hs_csr_op(pcihp_p, pci_dev, 2095 HPC_EVENT_SLOT_BLUE_LED_OFF); 2096 /* ENUM# enabled by default for cPCI devices */ 2097 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2098 slotinfop->slot_flags &= 2099 ~PCIHP_SLOT_ENUM_INS_PENDING; 2100 } 2101 2102 /* tell HPC driver that the occupant is configured */ 2103 (void) hpc_nexus_control(slotinfop->slot_hdl, 2104 HPC_CTRL_DEV_CONFIGURED, NULL); 2105 2106 /* 2107 * Tell sysevent listeners that slot has 2108 * changed state. At minimum, this is useful 2109 * when a PCI-E Chassis (containing Occupants) is 2110 * hotplugged. In this case, the following will 2111 * announce that the Occupant in the Receptacle 2112 * in the Chassis had a state-change. 2113 */ 2114 pcihp_gen_sysevent(slotinfop->name, 2115 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2116 pcihp_p->dip, KM_SLEEP); 2117 } else { 2118 struct pcihp_config_ctrl ctrl; 2119 int circular_count; 2120 2121 slotinfop->ostate = AP_OSTATE_UNCONFIGURED; 2122 slotinfop->rstate = AP_RSTATE_EMPTY; 2123 slotinfop->condition = AP_COND_UNKNOWN; 2124 2125 if (!auto_enable) { /* no further action */ 2126 break; 2127 } 2128 2129 /* 2130 * We enable power to the slot and try to 2131 * configure if there is any card present. 2132 * 2133 * Note: This case is possible if the BIOS or 2134 * firmware doesn't enable the slots during 2135 * soft reboot. 2136 */ 2137 if (hpc_nexus_connect(slotinfop->slot_hdl, 2138 NULL, 0) != HPC_SUCCESS) 2139 break; 2140 2141 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2142 pcihp_hs_csr_op(pcihp_p, pci_dev, 2143 HPC_EVENT_SLOT_CONFIGURE); 2144 if (pcihp_cpci_blue_led) 2145 pcihp_hs_csr_op(pcihp_p, pci_dev, 2146 HPC_EVENT_SLOT_BLUE_LED_OFF); 2147 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2148 slotinfop->slot_flags &= 2149 ~PCIHP_SLOT_ENUM_INS_PENDING; 2150 } 2151 2152 (void) hpc_nexus_control(slotinfop->slot_hdl, 2153 HPC_CTRL_DEV_CONFIG_START, NULL); 2154 2155 /* 2156 * Call the configurator to configure the card. 2157 */ 2158 if (pcicfg_configure(dip, pci_dev) != PCICFG_SUCCESS) { 2159 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2160 if (pcihp_cpci_blue_led) 2161 pcihp_hs_csr_op(pcihp_p, 2162 pci_dev, 2163 HPC_EVENT_SLOT_BLUE_LED_ON); 2164 pcihp_hs_csr_op(pcihp_p, pci_dev, 2165 HPC_EVENT_SLOT_UNCONFIGURE); 2166 } 2167 2168 /* tell HPC driver occupant configure Error */ 2169 (void) hpc_nexus_control(slotinfop->slot_hdl, 2170 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2171 2172 /* 2173 * call HPC driver to turn off the power for 2174 * the slot. 2175 */ 2176 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2177 NULL, 0); 2178 } else { 2179 /* record the occupant state as CONFIGURED */ 2180 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2181 slotinfop->rstate = AP_RSTATE_CONNECTED; 2182 slotinfop->condition = AP_COND_OK; 2183 2184 /* now, online all the devices in the AP */ 2185 ctrl.flags = PCIHP_CFG_CONTINUE; 2186 ctrl.rv = NDI_SUCCESS; 2187 ctrl.dip = NULL; 2188 ctrl.pci_dev = pci_dev; 2189 ctrl.op = PCIHP_ONLINE; 2190 /* 2191 * the following sets slot_flags and 2192 * hs_csr_location too. 2193 */ 2194 (void) pcihp_get_board_type(slotinfop); 2195 2196 ndi_devi_enter(dip, &circular_count); 2197 ddi_walk_devs(ddi_get_child(dip), 2198 pcihp_configure, (void *)&ctrl); 2199 ndi_devi_exit(dip, circular_count); 2200 2201 if (ctrl.rv != NDI_SUCCESS) { 2202 /* 2203 * one or more of the devices are not 2204 * ONLINE'd. How is this to be 2205 * reported? 2206 */ 2207 cmn_err(CE_WARN, 2208 "pcihp (%s%d): failed to attach" 2209 " one or more drivers for the" 2210 " card in the slot %s", 2211 ddi_driver_name(dip), 2212 ddi_get_instance(dip), 2213 slotinfop->name); 2214 } 2215 2216 /* tell HPC driver the Occupant is Configured */ 2217 (void) hpc_nexus_control(slotinfop->slot_hdl, 2218 HPC_CTRL_DEV_CONFIGURED, NULL); 2219 2220 /* 2221 * Tell sysevent listeners that slot has 2222 * changed state. At minimum, this is useful 2223 * when a PCI-E Chassis (containing Occupants) 2224 * is hotplugged. In this case, the following 2225 * will announce that the Occupant in the 2226 * Receptacle in the Chassis had a state-change. 2227 */ 2228 pcihp_gen_sysevent(slotinfop->name, 2229 PCIHP_DR_AP_STATE_CHANGE, SE_NO_HINT, 2230 pcihp_p->dip, KM_SLEEP); 2231 } 2232 } 2233 2234 break; 2235 2236 case HPC_SLOT_OFFLINE: 2237 /* 2238 * A hot plug slot is being removed from the bus. 2239 * Make sure there is no occupant configured on the 2240 * slot before removing the AP minor node. 2241 */ 2242 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2243 cmn_err(CE_WARN, "pcihp (%s%d): Card is still in " 2244 "configured state for pci dev %x", 2245 ddi_driver_name(dip), ddi_get_instance(dip), 2246 pci_dev); 2247 rv = HPC_ERR_FAILED; 2248 break; 2249 } 2250 2251 /* 2252 * If the AP device is in open state then return 2253 * error. 2254 */ 2255 if (pcihp_p->soft_state != PCIHP_SOFT_STATE_CLOSED) { 2256 rv = HPC_ERR_FAILED; 2257 break; 2258 } 2259 if (slot_info->slot_flags & HPC_SLOT_CREATE_DEVLINK) { 2260 pci_devlink_flags &= ~(1 << pci_dev); 2261 (void) ddi_prop_update_int(DDI_DEV_T_NONE, dip, 2262 "ap-names", pci_devlink_flags); 2263 } 2264 2265 /* remove the minor node */ 2266 ddi_remove_minor_node(dip, slotinfop->name); 2267 2268 /* free up the memory for the name string */ 2269 kmem_free(slotinfop->name, strlen(slotinfop->name) + 1); 2270 2271 /* update the slot info data */ 2272 slotinfop->name = NULL; 2273 slotinfop->slot_hdl = NULL; 2274 2275 PCIHP_DEBUG((CE_NOTE, 2276 "pcihp (%s%d): pci slot (dev %x) OFFLINE\n", 2277 ddi_driver_name(dip), ddi_get_instance(dip), 2278 slot_info->pci_dev_num)); 2279 2280 break; 2281 default: 2282 cmn_err(CE_WARN, 2283 "pcihp_new_slot_state: unknown slot_state %d", slot_state); 2284 rv = HPC_ERR_FAILED; 2285 } 2286 2287 if (rv == 0) { 2288 if (drv_getparm(TIME, (void *)&time) != DDI_SUCCESS) 2289 slotinfop->last_change = (time_t)-1; 2290 else 2291 slotinfop->last_change = (time32_t)time; 2292 } 2293 2294 mutex_exit(&slotinfop->slot_mutex); 2295 2296 (void) pcihp_get_soft_state(dip, PCIHP_DR_SLOT_EXIT, &rval); 2297 2298 return (rv); 2299 } 2300 2301 /* 2302 * Event handler. It is assumed that this function is called from 2303 * a kernel context only. 2304 * 2305 * Parameters: 2306 * slot_arg AP minor number. 2307 * event_mask Event that occurred. 2308 */ 2309 2310 static int 2311 pcihp_event_handler(caddr_t slot_arg, uint_t event_mask) 2312 { 2313 dev_t ap_dev = (dev_t)slot_arg; 2314 dev_info_t *self; 2315 pcihp_t *pcihp_p; 2316 int pci_dev; 2317 int rv = HPC_EVENT_CLAIMED; 2318 struct pcihp_slotinfo *slotinfop; 2319 struct pcihp_config_ctrl ctrl; 2320 int circular_count; 2321 int rval; 2322 int hint; 2323 hpc_slot_state_t rstate; 2324 struct hpc_led_info led_info; 2325 2326 /* 2327 * Get the soft state structure. 2328 */ 2329 if (pcihp_info(NULL, DDI_INFO_DEVT2DEVINFO, (void *)ap_dev, 2330 (void **)&self) != DDI_SUCCESS) 2331 return (ENXIO); 2332 2333 pcihp_p = pcihp_get_soft_state(self, PCIHP_DR_SLOT_ENTER, &rval); 2334 ASSERT(pcihp_p != NULL); 2335 2336 if (rval == PCIHP_FAILURE) { 2337 PCIHP_DEBUG((CE_WARN, "pcihp instance is unconfigured" 2338 " while slot activity is requested\n")); 2339 return (-1); 2340 } 2341 2342 /* get the PCI device number for the slot */ 2343 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(ap_dev)); 2344 2345 slotinfop = &pcihp_p->slotinfo[pci_dev]; 2346 2347 /* 2348 * All the events that may be handled in interrupt context should be 2349 * free of any mutex usage. 2350 */ 2351 switch (event_mask) { 2352 2353 case HPC_EVENT_CLEAR_ENUM: 2354 /* 2355 * Check and clear ENUM# interrupt status. This may be 2356 * called by the Hotswap controller driver when it is 2357 * operating in a full hotswap system where the 2358 * platform may not have control on globally disabling ENUM#. 2359 * In such cases, the intent is to clear interrupt and 2360 * process the interrupt in non-interrupt context. 2361 * This is the first part of the ENUM# event processing. 2362 */ 2363 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2364 " on the bus (for slot %s ?)", 2365 ddi_driver_name(pcihp_p->dip), 2366 ddi_get_instance(pcihp_p->dip), slotinfop->name)); 2367 2368 /* this is the only event coming through in interrupt context */ 2369 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_CLEAR_ENUM, 2370 KM_NOSLEEP); 2371 2372 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2373 2374 return (rv); 2375 default: 2376 break; 2377 } 2378 2379 mutex_enter(&slotinfop->slot_mutex); 2380 2381 if (hpc_nexus_control(slotinfop->slot_hdl, 2382 HPC_CTRL_GET_SLOT_STATE, (caddr_t)&rstate) != 0) 2383 rv = HPC_ERR_FAILED; 2384 2385 slotinfop->rstate = (ap_rstate_t)rstate; 2386 2387 switch (event_mask) { 2388 2389 case HPC_EVENT_SLOT_INSERTION: 2390 /* 2391 * A card is inserted in the slot. Just report this 2392 * event and return. 2393 */ 2394 cmn_err(CE_NOTE, "pcihp (%s%d): card is inserted" 2395 " in the slot %s (pci dev %x)", 2396 ddi_driver_name(pcihp_p->dip), 2397 ddi_get_instance(pcihp_p->dip), 2398 slotinfop->name, pci_dev); 2399 2400 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2401 2402 break; 2403 2404 case HPC_EVENT_SLOT_CONFIGURE: 2405 /* 2406 * Configure the occupant that is just inserted in the slot. 2407 * The receptacle may or may not be in the connected state. If 2408 * the receptacle is not connected and the auto configuration 2409 * is enabled on this slot then connect the slot. If auto 2410 * configuration is enabled then configure the card. 2411 */ 2412 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2413 /* 2414 * auto configuration is disabled. Tell someone 2415 * like RCM about this hotplug event? 2416 */ 2417 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_CONFIGURE event" 2418 " occurred for pci dev %x (slot %s)," 2419 " Slot disabled for auto-configuration.", 2420 ddi_driver_name(pcihp_p->dip), 2421 ddi_get_instance(pcihp_p->dip), pci_dev, 2422 slotinfop->name); 2423 2424 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2425 2426 break; 2427 } 2428 2429 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2430 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_CONFIGURE event" 2431 " re-occurred for pci dev %x (slot %s),", 2432 ddi_driver_name(pcihp_p->dip), 2433 ddi_get_instance(pcihp_p->dip), pci_dev, 2434 slotinfop->name); 2435 mutex_exit(&slotinfop->slot_mutex); 2436 2437 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2438 &rval); 2439 2440 return (EAGAIN); 2441 } 2442 2443 /* 2444 * Auto configuration is enabled. First, make sure the 2445 * receptacle is in the CONNECTED state. 2446 */ 2447 if ((rv = hpc_nexus_connect(slotinfop->slot_hdl, 2448 NULL, 0)) == HPC_SUCCESS) { 2449 /* record rstate */ 2450 slotinfop->rstate = AP_RSTATE_CONNECTED; 2451 } 2452 2453 /* Clear INS and Turn LED Off and start configuring. */ 2454 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2455 pcihp_hs_csr_op(pcihp_p, pci_dev, 2456 HPC_EVENT_SLOT_CONFIGURE); 2457 if (pcihp_cpci_blue_led) 2458 pcihp_hs_csr_op(pcihp_p, pci_dev, 2459 HPC_EVENT_SLOT_BLUE_LED_OFF); 2460 } 2461 2462 (void) hpc_nexus_control(slotinfop->slot_hdl, 2463 HPC_CTRL_DEV_CONFIG_START, NULL); 2464 2465 /* 2466 * Call the configurator to configure the card. 2467 */ 2468 if (pcicfg_configure(pcihp_p->dip, pci_dev) != PCICFG_SUCCESS) { 2469 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2470 if (pcihp_cpci_blue_led) 2471 pcihp_hs_csr_op(pcihp_p, pci_dev, 2472 HPC_EVENT_SLOT_BLUE_LED_ON); 2473 pcihp_hs_csr_op(pcihp_p, pci_dev, 2474 HPC_EVENT_SLOT_UNCONFIGURE); 2475 } 2476 /* failed to configure the card */ 2477 cmn_err(CE_WARN, "pcihp (%s%d): failed to configure" 2478 " the card in the slot %s", 2479 ddi_driver_name(pcihp_p->dip), 2480 ddi_get_instance(pcihp_p->dip), 2481 slotinfop->name); 2482 /* failed to configure; disconnect the slot */ 2483 if (hpc_nexus_disconnect(slotinfop->slot_hdl, 2484 NULL, 0) == HPC_SUCCESS) { 2485 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2486 } 2487 2488 /* tell HPC driver occupant configure Error */ 2489 (void) hpc_nexus_control(slotinfop->slot_hdl, 2490 HPC_CTRL_DEV_CONFIG_FAILURE, NULL); 2491 } else { 2492 /* record the occupant state as CONFIGURED */ 2493 slotinfop->ostate = AP_OSTATE_CONFIGURED; 2494 slotinfop->condition = AP_COND_OK; 2495 2496 /* now, online all the devices in the AP */ 2497 ctrl.flags = PCIHP_CFG_CONTINUE; 2498 ctrl.rv = NDI_SUCCESS; 2499 ctrl.dip = NULL; 2500 ctrl.pci_dev = pci_dev; 2501 ctrl.op = PCIHP_ONLINE; 2502 (void) pcihp_get_board_type(slotinfop); 2503 2504 ndi_devi_enter(pcihp_p->dip, &circular_count); 2505 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2506 pcihp_configure, (void *)&ctrl); 2507 ndi_devi_exit(pcihp_p->dip, circular_count); 2508 2509 if (ctrl.rv != NDI_SUCCESS) { 2510 /* 2511 * one or more of the devices are not 2512 * ONLINE'd. How is this to be 2513 * reported? 2514 */ 2515 cmn_err(CE_WARN, 2516 "pcihp (%s%d): failed to attach one or" 2517 " more drivers for the card in" 2518 " the slot %s", 2519 ddi_driver_name(pcihp_p->dip), 2520 ddi_get_instance(pcihp_p->dip), 2521 slotinfop->name); 2522 } 2523 2524 /* tell HPC driver that the occupant is configured */ 2525 (void) hpc_nexus_control(slotinfop->slot_hdl, 2526 HPC_CTRL_DEV_CONFIGURED, NULL); 2527 2528 cmn_err(CE_NOTE, "pcihp (%s%d): card is CONFIGURED" 2529 " in the slot %s (pci dev %x)", 2530 ddi_driver_name(pcihp_p->dip), 2531 ddi_get_instance(pcihp_p->dip), 2532 slotinfop->name, pci_dev); 2533 } 2534 2535 break; 2536 2537 case HPC_EVENT_SLOT_UNCONFIGURE: 2538 /* 2539 * Unconfigure the occupant in this slot. 2540 */ 2541 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) { 2542 /* 2543 * auto configuration is disabled. Tell someone 2544 * like RCM about this hotplug event? 2545 */ 2546 cmn_err(CE_NOTE, "pcihp (%s%d): SLOT_UNCONFIGURE event" 2547 " for pci dev %x (slot %s) ignored," 2548 " Slot disabled for auto-configuration.", 2549 ddi_driver_name(pcihp_p->dip), 2550 ddi_get_instance(pcihp_p->dip), pci_dev, 2551 slotinfop->name); 2552 2553 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2554 2555 break; 2556 } 2557 2558 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) { 2559 cmn_err(CE_WARN, "pcihp (%s%d): SLOT_UNCONFIGURE " 2560 "event re-occurred for pci dev %x (slot %s),", 2561 ddi_driver_name(pcihp_p->dip), 2562 ddi_get_instance(pcihp_p->dip), pci_dev, 2563 slotinfop->name); 2564 mutex_exit(&slotinfop->slot_mutex); 2565 2566 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, 2567 &rval); 2568 2569 return (EAGAIN); 2570 } 2571 /* 2572 * If the occupant is in the CONFIGURED state then 2573 * call the configurator to unconfigure the slot. 2574 */ 2575 if (slotinfop->ostate == AP_OSTATE_CONFIGURED) { 2576 /* 2577 * Detach all the drivers for the devices in the 2578 * slot. Call pcihp_configure() to offline the 2579 * devices. 2580 */ 2581 ctrl.flags = 0; 2582 ctrl.rv = NDI_SUCCESS; 2583 ctrl.dip = NULL; 2584 ctrl.pci_dev = pci_dev; 2585 ctrl.op = PCIHP_OFFLINE; 2586 2587 (void) devfs_clean(pcihp_p->dip, NULL, DV_CLEAN_FORCE); 2588 ndi_devi_enter(pcihp_p->dip, &circular_count); 2589 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2590 pcihp_configure, (void *)&ctrl); 2591 ndi_devi_exit(pcihp_p->dip, circular_count); 2592 2593 if (ctrl.rv != NDI_SUCCESS) { 2594 /* 2595 * Failed to detach one or more drivers. 2596 * Restore the status for the drivers 2597 * which are offlined during this step. 2598 */ 2599 ctrl.flags = PCIHP_CFG_CONTINUE; 2600 ctrl.rv = NDI_SUCCESS; 2601 ctrl.dip = NULL; 2602 ctrl.pci_dev = pci_dev; 2603 ctrl.op = PCIHP_ONLINE; 2604 2605 ndi_devi_enter(pcihp_p->dip, &circular_count); 2606 ddi_walk_devs(ddi_get_child(pcihp_p->dip), 2607 pcihp_configure, (void *)&ctrl); 2608 ndi_devi_exit(pcihp_p->dip, circular_count); 2609 rv = HPC_ERR_FAILED; 2610 } else { 2611 (void) hpc_nexus_control(slotinfop->slot_hdl, 2612 HPC_CTRL_DEV_UNCONFIG_START, NULL); 2613 2614 if (pcicfg_unconfigure(pcihp_p->dip, 2615 pci_dev) == PCICFG_SUCCESS) { 2616 2617 /* Resources freed. Turn LED on. Clear EXT. */ 2618 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2619 if (pcihp_cpci_blue_led) 2620 pcihp_hs_csr_op(pcihp_p, 2621 pci_dev, 2622 HPC_EVENT_SLOT_BLUE_LED_ON); 2623 pcihp_hs_csr_op(pcihp_p, pci_dev, 2624 HPC_EVENT_SLOT_UNCONFIGURE); 2625 slotinfop->hs_csr_location = 0; 2626 slotinfop->slot_flags &= 2627 ~PCIHP_SLOT_DEV_NON_HOTPLUG; 2628 } 2629 slotinfop->ostate = 2630 AP_OSTATE_UNCONFIGURED; 2631 slotinfop->condition = AP_COND_UNKNOWN; 2632 /* 2633 * send the notification of state change 2634 * to the HPC driver. 2635 */ 2636 (void) hpc_nexus_control( 2637 slotinfop->slot_hdl, 2638 HPC_CTRL_DEV_UNCONFIGURED, NULL); 2639 /* disconnect the slot */ 2640 if (hpc_nexus_disconnect( 2641 slotinfop->slot_hdl, 2642 NULL, 0) == HPC_SUCCESS) { 2643 slotinfop->rstate = 2644 AP_RSTATE_DISCONNECTED; 2645 } 2646 2647 cmn_err(CE_NOTE, 2648 "pcihp (%s%d): card is UNCONFIGURED" 2649 " in the slot %s (pci dev %x)", 2650 ddi_driver_name(pcihp_p->dip), 2651 ddi_get_instance(pcihp_p->dip), 2652 slotinfop->name, pci_dev); 2653 } else { 2654 /* tell HPC driver occupant is Busy */ 2655 (void) hpc_nexus_control( 2656 slotinfop->slot_hdl, 2657 HPC_CTRL_DEV_UNCONFIG_FAILURE, 2658 NULL); 2659 2660 rv = HPC_ERR_FAILED; 2661 } 2662 } 2663 } 2664 2665 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2666 2667 break; 2668 2669 case HPC_EVENT_SLOT_REMOVAL: 2670 /* 2671 * Card is removed from the slot. The card must have been 2672 * unconfigured before this event. 2673 */ 2674 if (slotinfop->ostate != AP_OSTATE_UNCONFIGURED) { 2675 slotinfop->condition = AP_COND_FAILED; 2676 cmn_err(CE_WARN, "pcihp (%s%d): card is removed" 2677 " from the slot %s", 2678 ddi_driver_name(pcihp_p->dip), 2679 ddi_get_instance(pcihp_p->dip), 2680 slotinfop->name); 2681 } else { 2682 slotinfop->condition = AP_COND_UNKNOWN; 2683 cmn_err(CE_NOTE, "pcihp (%s%d): card is removed" 2684 " from the slot %s", 2685 ddi_driver_name(pcihp_p->dip), 2686 ddi_get_instance(pcihp_p->dip), 2687 slotinfop->name); 2688 } 2689 2690 slotinfop->rstate = AP_RSTATE_EMPTY; 2691 2692 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2693 2694 break; 2695 2696 case HPC_EVENT_SLOT_POWER_ON: 2697 /* 2698 * Slot is connected to the bus. i.e the card is powered 2699 * on. Are there any error conditions to be checked? 2700 */ 2701 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2702 " on in the slot %s", 2703 ddi_driver_name(pcihp_p->dip), 2704 ddi_get_instance(pcihp_p->dip), 2705 slotinfop->name)); 2706 2707 slotinfop->rstate = AP_RSTATE_CONNECTED; /* record rstate */ 2708 2709 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2710 2711 break; 2712 2713 case HPC_EVENT_SLOT_POWER_OFF: 2714 /* 2715 * Slot is disconnected from the bus. i.e the card is powered 2716 * off. Are there any error conditions to be checked? 2717 */ 2718 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): card is powered" 2719 " off in the slot %s", 2720 ddi_driver_name(pcihp_p->dip), 2721 ddi_get_instance(pcihp_p->dip), 2722 slotinfop->name)); 2723 2724 slotinfop->rstate = AP_RSTATE_DISCONNECTED; /* record rstate */ 2725 2726 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2727 2728 break; 2729 2730 case HPC_EVENT_SLOT_LATCH_SHUT: 2731 /* 2732 * Latch on the slot is closed. 2733 */ 2734 cmn_err(CE_NOTE, "pcihp (%s%d): latch is shut for the slot %s", 2735 ddi_driver_name(pcihp_p->dip), 2736 ddi_get_instance(pcihp_p->dip), 2737 slotinfop->name); 2738 2739 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2740 2741 break; 2742 2743 case HPC_EVENT_SLOT_LATCH_OPEN: 2744 /* 2745 * Latch on the slot is open. 2746 */ 2747 cmn_err(CE_NOTE, "pcihp (%s%d): latch is open for the slot %s", 2748 ddi_driver_name(pcihp_p->dip), 2749 ddi_get_instance(pcihp_p->dip), 2750 slotinfop->name); 2751 2752 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2753 2754 break; 2755 2756 case HPC_EVENT_PROCESS_ENUM: 2757 /* 2758 * HSC knows the device number of the slot where the 2759 * ENUM# was triggered. 2760 * Now finish the necessary actions to be taken on that 2761 * slot. Please note that the interrupt is already cleared. 2762 * This is the second(last) part of the ENUM# event processing. 2763 */ 2764 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): processing ENUM#" 2765 " for slot %s", 2766 ddi_driver_name(pcihp_p->dip), 2767 ddi_get_instance(pcihp_p->dip), 2768 slotinfop->name)); 2769 2770 mutex_exit(&slotinfop->slot_mutex); 2771 rv = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 2772 PCIHP_HANDLE_ENUM, KM_SLEEP); 2773 mutex_enter(&slotinfop->slot_mutex); 2774 2775 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2776 2777 break; 2778 2779 case HPC_EVENT_BUS_ENUM: 2780 /* 2781 * Same as HPC_EVENT_SLOT_ENUM as defined the PSARC doc. 2782 * This term is used for better clarity of its usage. 2783 * 2784 * ENUM signal occurred on the bus. It may be from this 2785 * slot or any other hotplug slot on the bus. 2786 * 2787 * It is NOT recommended that the hotswap controller uses 2788 * event without queuing as NDI and other DDI calls may not 2789 * necessarily be invokable in interrupt context. 2790 * Hence the hotswap controller driver should use the 2791 * CLEAR_ENUM event which returns the slot device number 2792 * and then call HPC_EVENT_PROCESS_ENUM event with queuing. 2793 * 2794 * This can be used when the hotswap controller is 2795 * implementing a polled event mechanism to do the 2796 * necessary actions in a single call. 2797 */ 2798 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): ENUM# is generated" 2799 " on the bus (for slot %s ?)", 2800 ddi_driver_name(pcihp_p->dip), 2801 ddi_get_instance(pcihp_p->dip), 2802 slotinfop->name)); 2803 2804 mutex_exit(&slotinfop->slot_mutex); 2805 rv = pcihp_handle_enum(pcihp_p, pci_dev, PCIHP_HANDLE_ENUM, 2806 KM_SLEEP); 2807 mutex_enter(&slotinfop->slot_mutex); 2808 2809 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2810 2811 break; 2812 2813 case HPC_EVENT_SLOT_BLUE_LED_ON: 2814 2815 /* 2816 * Request to turn Hot Swap Blue LED on. 2817 */ 2818 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn On Blue " 2819 "LED on the bus (for slot %s ?)", 2820 ddi_driver_name(pcihp_p->dip), 2821 ddi_get_instance(pcihp_p->dip), 2822 slotinfop->name)); 2823 2824 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_ON); 2825 break; 2826 2827 case HPC_EVENT_DISABLE_ENUM: 2828 /* 2829 * Disable ENUM# which disables auto configuration on this slot 2830 */ 2831 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2832 pcihp_hs_csr_op(pcihp_p, pci_dev, 2833 HPC_EVENT_DISABLE_ENUM); 2834 slotinfop->slot_flags &= ~PCIHP_SLOT_AUTO_CFG_EN; 2835 } 2836 break; 2837 2838 case HPC_EVENT_ENABLE_ENUM: 2839 /* 2840 * Enable ENUM# which enables auto configuration on this slot. 2841 */ 2842 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 2843 pcihp_hs_csr_op(pcihp_p, pci_dev, 2844 HPC_EVENT_ENABLE_ENUM); 2845 slotinfop->slot_flags |= PCIHP_SLOT_AUTO_CFG_EN; 2846 } 2847 break; 2848 2849 case HPC_EVENT_SLOT_BLUE_LED_OFF: 2850 2851 /* 2852 * Request to turn Hot Swap Blue LED off. 2853 */ 2854 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): Request To Turn Off Blue " 2855 "LED on the bus (for slot %s ?)", 2856 ddi_driver_name(pcihp_p->dip), 2857 ddi_get_instance(pcihp_p->dip), 2858 slotinfop->name)); 2859 2860 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_BLUE_LED_OFF); 2861 2862 break; 2863 2864 case HPC_EVENT_SLOT_NOT_HEALTHY: 2865 /* 2866 * HEALTHY# signal on this slot is not OK. 2867 */ 2868 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is not OK" 2869 " for this slot %s", 2870 ddi_driver_name(pcihp_p->dip), 2871 ddi_get_instance(pcihp_p->dip), 2872 slotinfop->name)); 2873 2874 /* record the state in slot_flags field */ 2875 slotinfop->slot_flags |= PCIHP_SLOT_NOT_HEALTHY; 2876 slotinfop->condition = AP_COND_FAILED; 2877 2878 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2879 2880 break; 2881 2882 case HPC_EVENT_SLOT_HEALTHY_OK: 2883 /* 2884 * HEALTHY# signal on this slot is OK now. 2885 */ 2886 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): HEALTHY# signal is OK now" 2887 " for this slot %s", 2888 ddi_driver_name(pcihp_p->dip), 2889 ddi_get_instance(pcihp_p->dip), 2890 slotinfop->name)); 2891 2892 /* update the state in slot_flags field */ 2893 slotinfop->slot_flags &= ~PCIHP_SLOT_NOT_HEALTHY; 2894 slotinfop->condition = AP_COND_OK; 2895 2896 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2897 2898 break; 2899 2900 case HPC_EVENT_SLOT_ATTN: 2901 /* 2902 * Attention button is pressed. 2903 */ 2904 if (((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 0) || 2905 (slotinfop->slot_flags & PCIHP_SLOT_DISABLED)) { 2906 /* 2907 * either auto-conifiguration or the slot is disabled, 2908 * ignore this event. 2909 */ 2910 break; 2911 } 2912 2913 if (slotinfop->ostate == AP_OSTATE_UNCONFIGURED) 2914 hint = SE_INCOMING_RES; 2915 else 2916 hint = SE_OUTGOING_RES; 2917 2918 if (ddi_getprop(DDI_DEV_T_ANY, pcihp_p->dip, DDI_PROP_DONTPASS, 2919 "inkernel-autoconfig", 0) == 0) { 2920 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_REQ, hint, 2921 pcihp_p->dip, KM_SLEEP); 2922 break; 2923 } 2924 2925 if ((slotinfop->ostate == AP_OSTATE_UNCONFIGURED) && 2926 (slotinfop->rstate != AP_RSTATE_EMPTY) && 2927 (slotinfop->condition != AP_COND_FAILED)) { 2928 if (slotinfop->rstate == AP_RSTATE_DISCONNECTED) { 2929 rv = hpc_nexus_connect(slotinfop->slot_hdl, 2930 NULL, 0); 2931 if (rv == HPC_SUCCESS) 2932 slotinfop->rstate = AP_RSTATE_CONNECTED; 2933 else 2934 break; 2935 } 2936 2937 rv = pcihp_configure_ap(pcihp_p, pci_dev); 2938 2939 } else if ((slotinfop->ostate == AP_OSTATE_CONFIGURED) && 2940 (slotinfop->rstate == AP_RSTATE_CONNECTED) && 2941 (slotinfop->condition != AP_COND_FAILED)) { 2942 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 2943 2944 if (rv != HPC_SUCCESS) 2945 break; 2946 2947 rv = hpc_nexus_disconnect(slotinfop->slot_hdl, 2948 NULL, 0); 2949 if (rv == HPC_SUCCESS) 2950 slotinfop->rstate = AP_RSTATE_DISCONNECTED; 2951 } 2952 2953 break; 2954 2955 case HPC_EVENT_SLOT_POWER_FAULT: 2956 /* 2957 * Power fault is detected. 2958 */ 2959 cmn_err(CE_NOTE, "pcihp (%s%d): power-fault" 2960 " for this slot %s", 2961 ddi_driver_name(pcihp_p->dip), 2962 ddi_get_instance(pcihp_p->dip), 2963 slotinfop->name); 2964 2965 /* turn on ATTN led */ 2966 led_info.led = HPC_ATTN_LED; 2967 led_info.state = HPC_LED_ON; 2968 rv = hpc_nexus_control(slotinfop->slot_hdl, 2969 HPC_CTRL_SET_LED_STATE, (caddr_t)&led_info); 2970 2971 if (slotinfop->rstate == AP_RSTATE_CONNECTED) 2972 (void) hpc_nexus_disconnect(slotinfop->slot_hdl, 2973 NULL, 0); 2974 2975 slotinfop->condition = AP_COND_FAILED; 2976 2977 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 2978 SE_NO_HINT, pcihp_p->dip, KM_SLEEP); 2979 2980 break; 2981 2982 default: 2983 cmn_err(CE_NOTE, "pcihp (%s%d): unknown event %x" 2984 " for this slot %s", 2985 ddi_driver_name(pcihp_p->dip), 2986 ddi_get_instance(pcihp_p->dip), event_mask, 2987 slotinfop->name); 2988 2989 /* +++ HOOK for RCM to report this hotplug event? +++ */ 2990 2991 break; 2992 } 2993 2994 mutex_exit(&slotinfop->slot_mutex); 2995 2996 (void) pcihp_get_soft_state(self, PCIHP_DR_SLOT_EXIT, &rval); 2997 2998 return (rv); 2999 } 3000 3001 /* 3002 * This function is called to online or offline the devices for an 3003 * attachment point. If the PCI device number of the node matches 3004 * with the device number of the specified hot plug slot then 3005 * the operation is performed. 3006 */ 3007 static int 3008 pcihp_configure(dev_info_t *dip, void *hdl) 3009 { 3010 int pci_dev; 3011 struct pcihp_config_ctrl *ctrl = (struct pcihp_config_ctrl *)hdl; 3012 int rv; 3013 pci_regspec_t *pci_rp; 3014 int length; 3015 3016 /* 3017 * Get the PCI device number information from the devinfo 3018 * node. Since the node may not have the address field 3019 * setup (this is done in the DDI_INITCHILD of the parent) 3020 * we look up the 'reg' property to decode that information. 3021 */ 3022 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3023 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3024 ctrl->rv = DDI_FAILURE; 3025 ctrl->dip = dip; 3026 return (DDI_WALK_TERMINATE); 3027 } 3028 3029 /* get the pci device id information */ 3030 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3031 3032 /* 3033 * free the memory allocated by ddi_prop_lookup_int_array 3034 */ 3035 ddi_prop_free(pci_rp); 3036 3037 /* 3038 * Match the node for the device number of the slot. 3039 */ 3040 if (pci_dev == ctrl->pci_dev) { /* node is a match */ 3041 if (ctrl->op == PCIHP_ONLINE) { 3042 /* it is CONFIGURE operation */ 3043 3044 /* skip this device if it is disabled or faulty */ 3045 if (pcihp_check_status(dip) == B_FALSE) { 3046 return (DDI_WALK_PRUNECHILD); 3047 } 3048 3049 rv = ndi_devi_online(dip, NDI_ONLINE_ATTACH|NDI_CONFIG); 3050 } else { 3051 /* 3052 * it is UNCONFIGURE operation. 3053 */ 3054 rv = ndi_devi_offline(dip, NDI_UNCONFIG); 3055 } 3056 if (rv != NDI_SUCCESS) { 3057 /* failed to attach/detach the driver(s) */ 3058 ctrl->rv = rv; 3059 ctrl->dip = dip; 3060 /* terminate the search if specified */ 3061 if (!(ctrl->flags & PCIHP_CFG_CONTINUE)) 3062 return (DDI_WALK_TERMINATE); 3063 } 3064 } 3065 3066 /* 3067 * continue the walk to the next sibling to look for a match 3068 * or to find other nodes if this card is a multi-function card. 3069 */ 3070 return (DDI_WALK_PRUNECHILD); 3071 } 3072 3073 /* 3074 * Check the device for a 'status' property. A conforming device 3075 * should have a status of "okay", "disabled", "fail", or "fail-xxx". 3076 * 3077 * Return FALSE for a conforming device that is disabled or faulted. 3078 * Return TRUE in every other case. 3079 */ 3080 static bool_t 3081 pcihp_check_status(dev_info_t *dip) 3082 { 3083 char *status_prop; 3084 bool_t rv = B_TRUE; 3085 3086 /* try to get the 'status' property */ 3087 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3088 "status", &status_prop) == DDI_PROP_SUCCESS) { 3089 3090 /* 3091 * test if the status is "disabled", "fail", or 3092 * "fail-xxx". 3093 */ 3094 if (strcmp(status_prop, "disabled") == 0) { 3095 rv = B_FALSE; 3096 PCIHP_DEBUG((CE_NOTE, 3097 "pcihp (%s%d): device is in disabled state", 3098 ddi_driver_name(dip), ddi_get_instance(dip))); 3099 } else if (strncmp(status_prop, "fail", 4) == 0) { 3100 rv = B_FALSE; 3101 cmn_err(CE_WARN, 3102 "pcihp (%s%d): device is in fault state (%s)", 3103 ddi_driver_name(dip), ddi_get_instance(dip), 3104 status_prop); 3105 } 3106 3107 ddi_prop_free(status_prop); 3108 } 3109 3110 return (rv); 3111 } 3112 3113 /* control structure used to find a device in the devinfo tree */ 3114 struct pcihp_find_ctrl { 3115 uint_t device; 3116 uint_t function; 3117 dev_info_t *dip; 3118 }; 3119 3120 static dev_info_t * 3121 pcihp_devi_find(dev_info_t *dip, uint_t device, uint_t function) 3122 { 3123 struct pcihp_find_ctrl ctrl; 3124 int circular_count; 3125 3126 ctrl.device = device; 3127 ctrl.function = function; 3128 ctrl.dip = NULL; 3129 3130 ndi_devi_enter(dip, &circular_count); 3131 ddi_walk_devs(ddi_get_child(dip), pcihp_match_dev, (void *)&ctrl); 3132 ndi_devi_exit(dip, circular_count); 3133 3134 return (ctrl.dip); 3135 } 3136 3137 static int 3138 pcihp_match_dev(dev_info_t *dip, void *hdl) 3139 { 3140 struct pcihp_find_ctrl *ctrl = (struct pcihp_find_ctrl *)hdl; 3141 pci_regspec_t *pci_rp; 3142 int length; 3143 int pci_dev; 3144 int pci_func; 3145 3146 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 3147 "reg", (int **)&pci_rp, (uint_t *)&length) != DDI_PROP_SUCCESS) { 3148 ctrl->dip = NULL; 3149 return (DDI_WALK_TERMINATE); 3150 } 3151 3152 /* get the PCI device address info */ 3153 pci_dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 3154 pci_func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 3155 3156 /* 3157 * free the memory allocated by ddi_prop_lookup_int_array 3158 */ 3159 ddi_prop_free(pci_rp); 3160 3161 3162 if ((pci_dev == ctrl->device) && (pci_func == ctrl->function)) { 3163 /* found the match for the specified device address */ 3164 ctrl->dip = dip; 3165 return (DDI_WALK_TERMINATE); 3166 } 3167 3168 /* 3169 * continue the walk to the next sibling to look for a match. 3170 */ 3171 return (DDI_WALK_PRUNECHILD); 3172 } 3173 3174 #if 0 3175 /* 3176 * Probe the configuration space of the slot to determine the receptacle 3177 * state. There may not be any devinfo tree created for this slot. 3178 */ 3179 static void 3180 pcihp_probe_slot_state(dev_info_t *dip, int dev, hpc_slot_state_t *rstatep) 3181 { 3182 /* XXX FIX IT */ 3183 } 3184 #endif 3185 3186 /* 3187 * This routine is called when a ENUM# assertion is detected for a bus. 3188 * Since ENUM# may be bussed, the slot that asserted ENUM# may not be known. 3189 * The HPC Driver passes the handle of a slot that is its best guess. 3190 * If the best guess slot is the one that asserted ENUM#, the proper handling 3191 * will be done. If its not, all possible slots will be locked at until 3192 * one that is asserting ENUM is found. 3193 * Also, indicate to the HSC to turn on ENUM# after it is serviced, 3194 * incase if it was disabled by the HSC due to the nature of asynchronous 3195 * delivery of interrupt by the framework. 3196 * 3197 * opcode has the following meanings. 3198 * PCIHP_CLEAR_ENUM = just clear interrupt and return the PCI device no. if 3199 * success, else return -1. 3200 * PCIHP_HANDLE_ENUM = clear interrupt and handle interrupt also. 3201 * 3202 */ 3203 static int 3204 pcihp_handle_enum(pcihp_t *pcihp_p, int favorite_pci_dev, int opcode, 3205 int kmflag) 3206 { 3207 struct pcihp_slotinfo *slotinfop; 3208 int pci_dev, rc, event_serviced = 0; 3209 3210 /* 3211 * Handle ENUM# condition for the "favorite" slot first. 3212 */ 3213 slotinfop = &pcihp_p->slotinfo[favorite_pci_dev]; 3214 if (slotinfop) { 3215 /* 3216 * First try the "favorite" pci device. This is the device 3217 * associated with the handle passed by the HPC Driver. 3218 */ 3219 rc = pcihp_enum_slot(pcihp_p, slotinfop, favorite_pci_dev, 3220 opcode, kmflag); 3221 if (rc != HPC_EVENT_UNCLAIMED) { /* indicates success */ 3222 event_serviced = 1; 3223 /* This MUST be a non-DEBUG feature. */ 3224 if (! pcihp_enum_scan_all) { 3225 return (rc); 3226 } 3227 } 3228 } 3229 3230 /* 3231 * If ENUM# is implemented as a radial signal, then there is no 3232 * need to further poll the slots. 3233 */ 3234 if (pcihp_p->bus_flags & PCIHP_BUS_ENUM_RADIAL) 3235 goto enum_service_check; 3236 3237 /* 3238 * If the "favorite" pci device didn't assert ENUM#, then 3239 * try the rest. Once we find and handle a device that asserted 3240 * ENUM#, then we will terminate the walk by returning unless 3241 * scan-all flag is set. 3242 */ 3243 for (pci_dev = 0; pci_dev < PCI_MAX_DEVS; pci_dev++) { 3244 if (pci_dev != favorite_pci_dev) { 3245 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3246 if (slotinfop == NULL) { 3247 continue; 3248 } 3249 /* Only CPCI devices support ENUM# generation. */ 3250 if (!(slotinfop->slot_type & HPC_SLOT_TYPE_CPCI)) 3251 continue; 3252 rc = pcihp_enum_slot(pcihp_p, slotinfop, pci_dev, 3253 opcode, kmflag); 3254 if (rc != HPC_EVENT_UNCLAIMED) { 3255 event_serviced = 1; 3256 /* This MUST be a non-DEBUG feature. */ 3257 if (! pcihp_enum_scan_all) 3258 break; 3259 } 3260 } 3261 } 3262 3263 enum_service_check: 3264 if (event_serviced) { 3265 return (rc); 3266 } 3267 3268 /* No ENUM# event found, Return */ 3269 return (HPC_EVENT_UNCLAIMED); 3270 } 3271 3272 /* 3273 * This routine attempts to handle a possible ENUM# assertion case for a 3274 * specified slot. This only works for adapters that implement Hot Swap 3275 * Friendly Silicon. If the slot's HS_CSR is read and it specifies ENUM# 3276 * has been asserted, either the insertion or removal handlers will be 3277 * called. 3278 */ 3279 static int 3280 pcihp_enum_slot(pcihp_t *pcihp_p, struct pcihp_slotinfo *slotinfop, int pci_dev, 3281 int opcode, int kmflag) 3282 { 3283 ddi_acc_handle_t handle; 3284 dev_info_t *dip, *new_child = NULL; 3285 int result, rv = -1; 3286 uint8_t hs_csr; 3287 3288 if (pcihp_config_setup(&dip, &handle, &new_child, pci_dev, 3289 pcihp_p) != DDI_SUCCESS) { 3290 return (HPC_EVENT_UNCLAIMED); 3291 } 3292 3293 /* 3294 * Read the device's HS_CSR. 3295 */ 3296 result = pcihp_get_hs_csr(slotinfop, handle, (uint8_t *)&hs_csr); 3297 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): hs_csr = %x, flags = %x", 3298 ddi_driver_name(pcihp_p->dip), ddi_get_instance(pcihp_p->dip), 3299 hs_csr, slotinfop->slot_flags)); 3300 /* 3301 * we teardown our device map here, because in case of an 3302 * extraction event, our nodes would be freed and a teardown 3303 * will cause problems. 3304 */ 3305 pcihp_config_teardown(&handle, &new_child, pci_dev, pcihp_p); 3306 3307 if (result == PCIHP_SUCCESS) { 3308 3309 /* If ENUM# is masked, then it is not us. Some other device */ 3310 if ((hs_csr & HS_CSR_EIM) && (opcode == PCIHP_CLEAR_ENUM)) 3311 return (HPC_EVENT_UNCLAIMED); 3312 /* 3313 * This device supports Full Hot Swap and implements 3314 * the Hot Swap Control and Status Register. 3315 */ 3316 if ((hs_csr & HS_CSR_INS) || 3317 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_INS_PENDING)) { 3318 /* handle insertion ENUM */ 3319 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3320 "Handle Insertion ENUM (INS) " 3321 "on the bus (for slot %s ?)", 3322 ddi_driver_name(pcihp_p->dip), 3323 ddi_get_instance(pcihp_p->dip), 3324 slotinfop->name)); 3325 3326 /* 3327 * generate sysevent 3328 */ 3329 3330 if (opcode == PCIHP_CLEAR_ENUM) 3331 pcihp_gen_sysevent(slotinfop->name, 3332 PCIHP_DR_REQ, 3333 SE_INCOMING_RES, pcihp_p->dip, 3334 kmflag); 3335 3336 rv = pcihp_handle_enum_insertion(pcihp_p, pci_dev, 3337 opcode, kmflag); 3338 3339 } else if ((hs_csr & HS_CSR_EXT) || 3340 (slotinfop->slot_flags & PCIHP_SLOT_ENUM_EXT_PENDING)) { 3341 /* handle extraction ENUM */ 3342 PCIHP_DEBUG((CE_NOTE, "pcihp (%s%d): " 3343 "Handle Extraction ENUM (EXT) " 3344 "on the bus (for slot %s ?)", 3345 ddi_driver_name(pcihp_p->dip), 3346 ddi_get_instance(pcihp_p->dip), 3347 slotinfop->name)); 3348 3349 /* 3350 * generate sysevent 3351 */ 3352 3353 if (opcode == PCIHP_CLEAR_ENUM) 3354 pcihp_gen_sysevent(slotinfop->name, 3355 PCIHP_DR_REQ, 3356 SE_OUTGOING_RES, 3357 pcihp_p->dip, 3358 kmflag); 3359 3360 rv = pcihp_handle_enum_extraction(pcihp_p, pci_dev, 3361 opcode, kmflag); 3362 } 3363 if (opcode == PCIHP_CLEAR_ENUM) { 3364 if (rv == PCIHP_SUCCESS) 3365 rv = pci_dev; 3366 else 3367 rv = HPC_EVENT_UNCLAIMED; 3368 } 3369 } 3370 3371 return (rv); 3372 } 3373 3374 /* 3375 * This routine is called when a ENUM# caused by lifting the lever 3376 * is detected. If the occupant is configured, it will be unconfigured. 3377 * If the occupant is already unconfigured or is successfully unconfigured, 3378 * the blue LED on the adapter is illuminated which means its OK to remove. 3379 * Please note that the lock must be released before invoking the 3380 * generic AP unconfigure function. 3381 */ 3382 static int 3383 pcihp_handle_enum_extraction(pcihp_t *pcihp_p, int pci_dev, int opcode, 3384 int kmflag) 3385 { 3386 struct pcihp_slotinfo *slotinfop; 3387 int rv = PCIHP_FAILURE; 3388 3389 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3390 3391 /* 3392 * It was observed that, clearing the EXT bit turned the LED ON. 3393 * This is a BIG problem in case if the unconfigure operation 3394 * failed because the board was busy. 3395 * In order to avoid this confusing situation (LED ON but the board 3396 * is not unconfigured), we instead decided not to clear EXT but 3397 * disable further ENUM# from this slot. Disabling ENUM# clears 3398 * the interrupt. 3399 * Finally before returning we clear the interrupt and enable 3400 * ENUM# back again from this slot. 3401 */ 3402 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3403 if (opcode == PCIHP_CLEAR_ENUM) { 3404 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_EXT_PENDING; 3405 return (PCIHP_SUCCESS); 3406 } 3407 3408 mutex_enter(&slotinfop->slot_mutex); 3409 rv = pcihp_unconfigure_ap(pcihp_p, pci_dev); 3410 mutex_exit(&slotinfop->slot_mutex); 3411 if (rv != HPC_SUCCESS && rv != EBUSY) { 3412 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on Unconfigure", 3413 ddi_driver_name(pcihp_p->dip), 3414 ddi_get_instance(pcihp_p->dip), pci_dev); 3415 } 3416 if (rv == EBUSY) 3417 cmn_err(CE_NOTE, "%s%d: PCI device %x Busy", 3418 ddi_driver_name(pcihp_p->dip), 3419 ddi_get_instance(pcihp_p->dip), pci_dev); 3420 if (rv) { 3421 if (pcihp_cpci_blue_led) 3422 pcihp_hs_csr_op(pcihp_p, pci_dev, 3423 HPC_EVENT_SLOT_BLUE_LED_OFF); 3424 } 3425 /* 3426 * we must clear interrupt in case the unconfigure didn't do it 3427 * due to a duplicate interrupt. Extraction is success. 3428 */ 3429 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_UNCONFIGURE); 3430 3431 if (!rv) { 3432 /* 3433 * Sys Event Notification. 3434 */ 3435 pcihp_gen_sysevent(slotinfop->name, PCIHP_DR_AP_STATE_CHANGE, 3436 SE_HINT_REMOVE, pcihp_p->dip, kmflag); 3437 } 3438 3439 /* 3440 * Enable interrupts back from this board. 3441 * This could potentially be problematic in case if the user is 3442 * quick enough to extract the board. 3443 * But we must do it just in case if the switch is closed again. 3444 */ 3445 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3446 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_EXT_PENDING; 3447 return (rv); 3448 } 3449 3450 /* 3451 * This routine is called when a ENUM# caused by when an adapter insertion 3452 * is detected. If the occupant is successfully configured (i.e. PCI resources 3453 * successfully assigned, the blue LED is left off, otherwise if configuration 3454 * is not successful, the blue LED is illuminated. 3455 * Please note that the lock must be released before invoking the 3456 * generic AP configure function. 3457 */ 3458 static int 3459 pcihp_handle_enum_insertion(pcihp_t *pcihp_p, int pci_dev, int opcode, 3460 int kmflag) 3461 { 3462 struct pcihp_slotinfo *slotinfop; 3463 int rv = PCIHP_FAILURE; 3464 minor_t ap_minor; 3465 major_t ap_major; 3466 3467 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3468 slotinfop->hs_csr_location = 0; 3469 /* we clear the interrupt here. This is a must here. */ 3470 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_SLOT_CONFIGURE); 3471 /* 3472 * disable further interrupt from this board till it is 3473 * configured. 3474 */ 3475 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_DISABLE_ENUM); 3476 if (opcode == PCIHP_CLEAR_ENUM) { 3477 slotinfop->slot_flags |= PCIHP_SLOT_ENUM_INS_PENDING; 3478 return (PCIHP_SUCCESS); 3479 } 3480 3481 if ((slotinfop->slot_flags & PCIHP_SLOT_AUTO_CFG_EN) == 3482 PCIHP_SLOT_AUTO_CFG_EN) { 3483 mutex_enter(&slotinfop->slot_mutex); 3484 rv = pcihp_configure_ap(pcihp_p, pci_dev); 3485 mutex_exit(&slotinfop->slot_mutex); 3486 if (rv != HPC_SUCCESS) { /* configure failed */ 3487 cmn_err(CE_NOTE, "%s%d: PCI device %x Failed on" 3488 " Configure", ddi_driver_name(pcihp_p->dip), 3489 ddi_get_instance(pcihp_p->dip), pci_dev); 3490 if (pcihp_cpci_blue_led) 3491 pcihp_hs_csr_op(pcihp_p, pci_dev, 3492 HPC_EVENT_SLOT_BLUE_LED_ON); 3493 } 3494 3495 /* pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_CLEAR_ENUM); */ 3496 pcihp_hs_csr_op(pcihp_p, pci_dev, HPC_EVENT_ENABLE_ENUM); 3497 3498 if (!rv) { 3499 ap_major = ddi_driver_major(pcihp_p->dip); 3500 ap_minor = PCIHP_AP_MINOR_NUM( 3501 ddi_get_instance(pcihp_p->dip), pci_dev); 3502 pcihp_create_occupant_props(pcihp_p->dip, 3503 makedevice(ap_major, ap_minor), pci_dev); 3504 3505 /* 3506 * Sys Event Notification. 3507 */ 3508 pcihp_gen_sysevent(slotinfop->name, 3509 PCIHP_DR_AP_STATE_CHANGE, 3510 SE_HINT_INSERT, pcihp_p->dip, kmflag); 3511 } 3512 3513 } else 3514 rv = PCIHP_SUCCESS; 3515 slotinfop->slot_flags &= ~PCIHP_SLOT_ENUM_INS_PENDING; 3516 return (rv); 3517 } 3518 3519 /* 3520 * Read the Hot Swap Control and Status Register (HS_CSR) and 3521 * place the result in the location pointed to be hs_csr. 3522 */ 3523 static int 3524 pcihp_get_hs_csr(struct pcihp_slotinfo *slotinfop, 3525 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3526 { 3527 if (slotinfop->hs_csr_location == -1) 3528 return (PCIHP_FAILURE); 3529 3530 if (slotinfop->hs_csr_location == 0) { 3531 slotinfop->hs_csr_location = 3532 pcihp_get_hs_csr_location(config_handle); 3533 3534 if (slotinfop->hs_csr_location == -1) 3535 return (PCIHP_FAILURE); 3536 } 3537 *hs_csr = pci_config_get8(config_handle, slotinfop->hs_csr_location); 3538 return (PCIHP_SUCCESS); 3539 } 3540 3541 /* 3542 * Write the Hot Swap Control and Status Register (HS_CSR) with 3543 * the value being pointed at by hs_csr. 3544 */ 3545 static void 3546 pcihp_set_hs_csr(struct pcihp_slotinfo *slotinfop, 3547 ddi_acc_handle_t config_handle, uint8_t *hs_csr) 3548 { 3549 if (slotinfop->hs_csr_location == -1) 3550 return; 3551 if (slotinfop->hs_csr_location == 0) { 3552 slotinfop->hs_csr_location = 3553 pcihp_get_hs_csr_location(config_handle); 3554 if (slotinfop->hs_csr_location == -1) 3555 return; 3556 } 3557 pci_config_put8(config_handle, slotinfop->hs_csr_location, *hs_csr); 3558 PCIHP_DEBUG((CE_NOTE, "hs_csr wrote %x, read %x", *hs_csr, 3559 pci_config_get8(config_handle, slotinfop->hs_csr_location))); 3560 } 3561 3562 static int 3563 pcihp_get_hs_csr_location(ddi_acc_handle_t config_handle) 3564 { 3565 uint8_t cap_id; 3566 uint_t cap_id_loc; 3567 uint16_t status; 3568 int location = -1; 3569 #define PCI_STAT_ECP_SUPP 0x10 3570 3571 /* 3572 * Need to check the Status register for ECP support first. 3573 * Also please note that for type 1 devices, the 3574 * offset could change. Should support type 1 next. 3575 */ 3576 status = pci_config_get16(config_handle, PCI_CONF_STAT); 3577 if (!(status & PCI_STAT_ECP_SUPP)) { 3578 PCIHP_DEBUG((CE_NOTE, "No Ext Capabilities for device\n")); 3579 return (-1); 3580 } 3581 cap_id_loc = pci_config_get8(config_handle, PCI_CONF_EXTCAP); 3582 3583 /* 3584 * Walk the list of capabilities, but don't walk past the end 3585 * of the Configuration Space Header. 3586 */ 3587 while ((cap_id_loc) && (cap_id_loc < PCI_CONF_HDR_SIZE)) { 3588 3589 cap_id = pci_config_get8(config_handle, cap_id_loc); 3590 3591 if (cap_id == CPCI_HOTSWAP_CAPID) { 3592 location = cap_id_loc + PCI_ECP_HS_CSR; 3593 break; 3594 } 3595 cap_id_loc = pci_config_get8(config_handle, 3596 cap_id_loc + 1); 3597 } 3598 return (location); 3599 } 3600 3601 static int 3602 pcihp_add_dummy_reg_property(dev_info_t *dip, 3603 uint_t bus, uint_t device, uint_t func) 3604 { 3605 pci_regspec_t dummy_reg; 3606 3607 bzero(&dummy_reg, sizeof (dummy_reg)); 3608 3609 dummy_reg.pci_phys_hi = PCIHP_MAKE_REG_HIGH(bus, device, func, 0); 3610 3611 return (ndi_prop_update_int_array(DDI_DEV_T_NONE, dip, 3612 "reg", (int *)&dummy_reg, sizeof (pci_regspec_t)/sizeof (int))); 3613 } 3614 3615 static void 3616 pcihp_hs_csr_op(pcihp_t *pcihp_p, int pci_dev, int event) 3617 { 3618 struct pcihp_slotinfo *slotinfop; 3619 ddi_acc_handle_t config_handle; 3620 dev_info_t *dip, *new_child = NULL; 3621 uint8_t hs_csr; 3622 int result; 3623 3624 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3625 3626 if (pcihp_config_setup(&dip, &config_handle, &new_child, pci_dev, 3627 pcihp_p) != DDI_SUCCESS) { 3628 return; 3629 } 3630 3631 result = pcihp_get_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3632 if ((result != PCIHP_SUCCESS) || (event == -1)) { 3633 pcihp_config_teardown(&config_handle, &new_child, pci_dev, 3634 pcihp_p); 3635 return; 3636 } 3637 3638 hs_csr &= 0xf; 3639 switch (event) { 3640 case HPC_EVENT_SLOT_BLUE_LED_ON: 3641 hs_csr |= HS_CSR_LOO; 3642 break; 3643 case HPC_EVENT_SLOT_BLUE_LED_OFF: 3644 hs_csr &= ~HS_CSR_LOO; 3645 break; 3646 case HPC_EVENT_SLOT_CONFIGURE: 3647 hs_csr |= HS_CSR_INS; /* clear INS */ 3648 break; 3649 case HPC_EVENT_CLEAR_ENUM: 3650 hs_csr |= (HS_CSR_INS | HS_CSR_EXT); 3651 break; 3652 case HPC_EVENT_SLOT_UNCONFIGURE: 3653 hs_csr |= HS_CSR_EXT; /* clear EXT */ 3654 break; 3655 case HPC_EVENT_ENABLE_ENUM: 3656 hs_csr &= ~HS_CSR_EIM; 3657 break; 3658 case HPC_EVENT_DISABLE_ENUM: 3659 hs_csr |= HS_CSR_EIM; 3660 break; 3661 case HPC_EVENT_SLOT_NOT_HEALTHY: 3662 case HPC_EVENT_SLOT_HEALTHY_OK: 3663 default: 3664 break; 3665 } 3666 pcihp_set_hs_csr(slotinfop, config_handle, (uint8_t *)&hs_csr); 3667 pcihp_config_teardown(&config_handle, &new_child, pci_dev, pcihp_p); 3668 } 3669 3670 static int 3671 pcihp_config_setup(dev_info_t **dip, ddi_acc_handle_t *handle, 3672 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3673 { 3674 dev_info_t *pdip = pcihp_p->dip; 3675 int bus, len, rc = DDI_SUCCESS; 3676 struct pcihp_slotinfo *slotinfop; 3677 hpc_slot_state_t rstate; 3678 ddi_acc_hdl_t *hp; 3679 pci_bus_range_t pci_bus_range; 3680 3681 slotinfop = &pcihp_p->slotinfo[pci_dev]; 3682 3683 /* 3684 * If declared failed, don't allow Config operations. 3685 * Otherwise, if good or failing, it is assumed Ok 3686 * to get config data. 3687 */ 3688 if (slotinfop->condition == AP_COND_FAILED) { 3689 return (PCIHP_FAILURE); 3690 } 3691 /* 3692 * check to see if there is a hardware present first. 3693 * If no hardware present, no need to probe this slot. 3694 * We can do this first probably as a first step towards 3695 * safeguarding from accidental removal (we don't support it!). 3696 */ 3697 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_SLOT_STATE, 3698 (caddr_t)&rstate) != 0) { 3699 return (DDI_FAILURE); 3700 } 3701 3702 if (rstate != HPC_SLOT_CONNECTED) { 3703 /* error. slot must be connected */ 3704 return (DDI_FAILURE); 3705 } 3706 *new_child = NULL; 3707 3708 /* 3709 * If there is no dip then we need to see if an 3710 * adapter has just been hot plugged. 3711 */ 3712 len = sizeof (pci_bus_range_t); 3713 if (ddi_getlongprop_buf(DDI_DEV_T_ANY, pdip, 3714 0, "bus-range", 3715 (caddr_t)&pci_bus_range, &len) != DDI_SUCCESS) { 3716 3717 return (PCIHP_FAILURE); 3718 } 3719 3720 /* primary bus number of this bus node */ 3721 bus = pci_bus_range.lo; 3722 3723 if (ndi_devi_alloc(pdip, DEVI_PSEUDO_NEXNAME, 3724 (pnode_t)DEVI_SID_NODEID, dip) != NDI_SUCCESS) { 3725 3726 PCIHP_DEBUG((CE_NOTE, "Failed to alloc probe node\n")); 3727 return (PCIHP_FAILURE); 3728 } 3729 3730 if (pcihp_add_dummy_reg_property(*dip, bus, 3731 pci_dev, 0) != DDI_SUCCESS) { 3732 3733 (void) ndi_devi_free(*dip); 3734 return (PCIHP_FAILURE); 3735 } 3736 3737 /* 3738 * Probe for a device. Possibly a non (c)PCI board could be sitting 3739 * here which would never respond to PCI config cycles - in which 3740 * case we return. Eventually a configure operation would fail. 3741 */ 3742 if (pci_config_setup(*dip, handle) != DDI_SUCCESS) { 3743 cmn_err(CE_WARN, "Cannot set config space map for" 3744 " pci device number %d", pci_dev); 3745 (void) ndi_devi_free(*dip); 3746 return (PCIHP_FAILURE); 3747 } 3748 3749 /* 3750 * See if there is any PCI HW at this location 3751 * by reading the Vendor ID. If it returns with 0xffff 3752 * then there is no hardware at this location. 3753 */ 3754 if (pcihp_indirect_map(*dip) == DDI_SUCCESS) { 3755 if (pci_config_get16(*handle, 0) == 0xffff) { 3756 pci_config_teardown(handle); 3757 (void) ndi_devi_free(*dip); 3758 return (PCIHP_FAILURE); 3759 } 3760 } else { 3761 /* Check if mapping is OK */ 3762 hp = impl_acc_hdl_get(*handle); 3763 3764 if (ddi_peek16(*dip, (int16_t *)(hp->ah_addr), 3765 (int16_t *)0) != DDI_SUCCESS) { 3766 #ifdef DEBUG 3767 cmn_err(CE_WARN, "Cannot Map PCI config space for " 3768 "device number %d", pci_dev); 3769 #endif 3770 pci_config_teardown(handle); 3771 (void) ndi_devi_free(*dip); 3772 return (PCIHP_FAILURE); 3773 } 3774 } 3775 3776 *new_child = *dip; 3777 return (rc); 3778 3779 } 3780 3781 static void 3782 pcihp_config_teardown(ddi_acc_handle_t *handle, 3783 dev_info_t **new_child, int pci_dev, pcihp_t *pcihp_p) 3784 { 3785 struct pcihp_slotinfo *slotinfop = &pcihp_p->slotinfo[pci_dev]; 3786 3787 pci_config_teardown(handle); 3788 if (*new_child) { 3789 (void) ndi_devi_free(*new_child); 3790 /* 3791 * If occupant not configured, reset HS_CSR location 3792 * so that we reprobe. This covers cases where 3793 * the receptacle had a status change without a 3794 * notification to the framework. 3795 */ 3796 if (slotinfop->ostate != AP_OSTATE_CONFIGURED) 3797 slotinfop->hs_csr_location = 0; 3798 } 3799 } 3800 3801 static int 3802 pcihp_get_board_type(struct pcihp_slotinfo *slotinfop) 3803 { 3804 hpc_board_type_t board_type; 3805 3806 /* 3807 * Get board type data structure, hpc_board_type_t. 3808 */ 3809 if (hpc_nexus_control(slotinfop->slot_hdl, HPC_CTRL_GET_BOARD_TYPE, 3810 (caddr_t)&board_type) != 0) { 3811 3812 cmn_err(CE_WARN, "Cannot Get Board Type.."); 3813 return (-1); 3814 } 3815 3816 /* 3817 * We expect the Hotswap Controller to tell us if the board is 3818 * a hotswap board or not, as it probably cannot differentiate 3819 * between a basic hotswap board, a non hotswap board and a 3820 * hotswap nonfriendly board. 3821 * So here is the logic to differentiate between the various 3822 * types of cPCI boards. 3823 * In case if the HSC returns board type as unknown, we assign 3824 * the default board type as defined by a configurable variable 3825 * for a BHS, nonfriendly FHS and non HS board. 3826 */ 3827 if (slotinfop->slot_type & HPC_SLOT_TYPE_CPCI) { 3828 if (slotinfop->hs_csr_location > 0) 3829 board_type = HPC_BOARD_CPCI_FULL_HS; 3830 else { 3831 if (board_type == HPC_BOARD_CPCI_HS) { 3832 if (slotinfop->hs_csr_location == -1) 3833 board_type = HPC_BOARD_CPCI_BASIC_HS; 3834 } 3835 if (board_type == HPC_BOARD_UNKNOWN) { 3836 if (slotinfop->hs_csr_location == -1) { 3837 board_type = pcihp_cpci_board_type; 3838 } else if (slotinfop->hs_csr_location != 0) { 3839 board_type = HPC_BOARD_CPCI_FULL_HS; 3840 } 3841 } 3842 } 3843 /* 3844 * If board type is a non hotswap board, then we must 3845 * deny a unconfigure operation. So set this flag. 3846 * Strictly speaking, there is no reason not to disallow 3847 * a unconfigure operation on nonhotswap boards. But this 3848 * is the only way we can prevent a user from accidentally 3849 * removing the board and damaging it. 3850 */ 3851 if (board_type == HPC_BOARD_CPCI_NON_HS) 3852 slotinfop->slot_flags |= PCIHP_SLOT_DEV_NON_HOTPLUG; 3853 else 3854 slotinfop->slot_flags &= ~PCIHP_SLOT_DEV_NON_HOTPLUG; 3855 } 3856 return (board_type); 3857 } 3858 3859 3860 /* 3861 * Generate the System Event with a possible hint. 3862 */ 3863 static void 3864 pcihp_gen_sysevent(char *slot_name, int event_sub_class, int hint, 3865 dev_info_t *self, int kmflag) 3866 { 3867 3868 int err; 3869 char *ev_subclass = NULL; 3870 sysevent_id_t eid; 3871 nvlist_t *ev_attr_list = NULL; 3872 char attach_pnt[MAXPATHLEN]; 3873 3874 /* 3875 * Minor device name (AP) will be bus path 3876 * concatenated with slot name 3877 */ 3878 3879 (void) strcpy(attach_pnt, PCIHP_DEVICES_STR); 3880 (void) ddi_pathname(self, attach_pnt + strlen(PCIHP_DEVICES_STR)); 3881 (void) strcat(attach_pnt, ":"); 3882 (void) strcat(attach_pnt, slot_name); 3883 err = nvlist_alloc(&ev_attr_list, NV_UNIQUE_NAME_TYPE, kmflag); 3884 if (err != 0) { 3885 cmn_err(CE_WARN, 3886 "%s%d: Failed to allocate memory " 3887 "for event attributes%s", ddi_driver_name(self), 3888 ddi_get_instance(self), ESC_DR_AP_STATE_CHANGE); 3889 return; 3890 } 3891 3892 switch (event_sub_class) { 3893 3894 /* event sub class: ESC_DR_AP_STATE_CHANGE */ 3895 case PCIHP_DR_AP_STATE_CHANGE: 3896 3897 ev_subclass = ESC_DR_AP_STATE_CHANGE; 3898 3899 switch (hint) { 3900 3901 case SE_NO_HINT: /* fall through */ 3902 case SE_HINT_INSERT: /* fall through */ 3903 case SE_HINT_REMOVE: 3904 3905 3906 err = nvlist_add_string(ev_attr_list, DR_HINT, 3907 SE_HINT2STR(hint)); 3908 3909 if (err != 0) { 3910 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s]" 3911 " for %s event", ddi_driver_name(self), 3912 ddi_get_instance(self), 3913 DR_HINT, ESC_DR_AP_STATE_CHANGE); 3914 nvlist_free(ev_attr_list); 3915 return; 3916 } 3917 break; 3918 3919 default: 3920 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3921 ddi_driver_name(self), ddi_get_instance(self)); 3922 nvlist_free(ev_attr_list); 3923 return; 3924 } 3925 3926 break; 3927 3928 /* event sub class: ESC_DR_REQ */ 3929 case PCIHP_DR_REQ: 3930 3931 ev_subclass = ESC_DR_REQ; 3932 3933 switch (hint) { 3934 3935 case SE_INVESTIGATE_RES: /* fall through */ 3936 case SE_INCOMING_RES: /* fall through */ 3937 case SE_OUTGOING_RES: /* fall through */ 3938 3939 err = nvlist_add_string(ev_attr_list, DR_REQ_TYPE, 3940 SE_REQ2STR(hint)); 3941 3942 if (err != 0) { 3943 cmn_err(CE_WARN, 3944 "%s%d: Failed to add attr [%s] " 3945 "for %s event", ddi_driver_name(self), 3946 ddi_get_instance(self), 3947 DR_REQ_TYPE, ESC_DR_REQ); 3948 nvlist_free(ev_attr_list); 3949 return; 3950 } 3951 break; 3952 3953 default: 3954 cmn_err(CE_WARN, "%s%d: Unknown hint on sysevent", 3955 ddi_driver_name(self), ddi_get_instance(self)); 3956 nvlist_free(ev_attr_list); 3957 return; 3958 } 3959 3960 break; 3961 3962 default: 3963 cmn_err(CE_WARN, "%s%d: Unknown Event subclass", 3964 ddi_driver_name(self), ddi_get_instance(self)); 3965 nvlist_free(ev_attr_list); 3966 return; 3967 } 3968 3969 /* 3970 * Add attachment point as attribute (common attribute) 3971 */ 3972 3973 err = nvlist_add_string(ev_attr_list, DR_AP_ID, attach_pnt); 3974 3975 if (err != 0) { 3976 cmn_err(CE_WARN, "%s%d: Failed to add attr [%s] for %s event", 3977 ddi_driver_name(self), ddi_get_instance(self), 3978 DR_AP_ID, EC_DR); 3979 nvlist_free(ev_attr_list); 3980 return; 3981 } 3982 3983 3984 /* 3985 * Log this event with sysevent framework. 3986 */ 3987 3988 err = ddi_log_sysevent(self, DDI_VENDOR_SUNW, EC_DR, 3989 ev_subclass, ev_attr_list, &eid, 3990 ((kmflag == KM_SLEEP) ? DDI_SLEEP : DDI_NOSLEEP)); 3991 if (err != 0) { 3992 cmn_err(CE_WARN, "%s%d: Failed to log %s event", 3993 ddi_driver_name(self), ddi_get_instance(self), EC_DR); 3994 } 3995 3996 nvlist_free(ev_attr_list); 3997 } 3998 3999 int 4000 pcihp_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 4001 int flags, char *name, caddr_t valuep, int *lengthp) 4002 { 4003 int pci_dev; 4004 4005 if (dev == DDI_DEV_T_ANY) 4006 goto skip; 4007 4008 if (strcmp(name, "pci-occupant") == 0) { 4009 pci_dev = PCIHP_AP_MINOR_NUM_TO_PCI_DEVNUM(getminor(dev)); 4010 pcihp_create_occupant_props(dip, dev, pci_dev); 4011 } 4012 /* other cases... */ 4013 skip: 4014 return (ddi_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp)); 4015 } 4016 4017 /* 4018 * this function is called only for SPARC platforms, where we may have 4019 * a mix n' match of direct vs indirectly mapped configuration space. 4020 * On x86, this function should always return success since the configuration 4021 * space is always indirect mapped. 4022 */ 4023 /*ARGSUSED*/ 4024 static int 4025 pcihp_indirect_map(dev_info_t *dip) 4026 { 4027 #if defined(__sparc) 4028 int rc = DDI_FAILURE; 4029 4030 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 0, 4031 PCI_DEV_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4032 rc = DDI_SUCCESS; 4033 else 4034 if (ddi_prop_get_int(DDI_DEV_T_ANY, ddi_get_parent(dip), 4035 0, PCI_BUS_CONF_MAP_PROP, DDI_FAILURE) != DDI_FAILURE) 4036 rc = DDI_SUCCESS; 4037 return (rc); 4038 #else 4039 return (DDI_SUCCESS); 4040 #endif 4041 } 4042