1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Host to PCI-Express local bus driver 29 */ 30 31 #include <sys/conf.h> 32 #include <sys/modctl.h> 33 #include <sys/file.h> 34 #include <sys/pci_impl.h> 35 #include <sys/pcie_impl.h> 36 #include <sys/sysmacros.h> 37 #include <sys/ddi_intr.h> 38 #include <sys/sunndi.h> 39 #include <sys/sunddi.h> 40 #include <sys/ddifm.h> 41 #include <sys/ndifm.h> 42 #include <sys/fm/util.h> 43 #include <sys/hotplug/pci/pcie_hp.h> 44 #include <io/pci/pci_tools_ext.h> 45 #include <io/pci/pci_common.h> 46 #include <io/pciex/pcie_nvidia.h> 47 48 /* 49 * Helper Macros 50 */ 51 #define NPE_IS_HANDLE_FOR_STDCFG_ACC(hp) \ 52 ((hp) != NULL && \ 53 ((ddi_acc_hdl_t *)(hp))->ah_platform_private != NULL && \ 54 (((ddi_acc_impl_t *)((ddi_acc_hdl_t *)(hp))-> \ 55 ah_platform_private)-> \ 56 ahi_acc_attr &(DDI_ACCATTR_CPU_VADDR|DDI_ACCATTR_CONFIG_SPACE)) \ 57 == DDI_ACCATTR_CONFIG_SPACE) 58 59 /* 60 * Bus Operation functions 61 */ 62 static int npe_bus_map(dev_info_t *, dev_info_t *, ddi_map_req_t *, 63 off_t, off_t, caddr_t *); 64 static int npe_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, 65 void *, void *); 66 static int npe_intr_ops(dev_info_t *, dev_info_t *, ddi_intr_op_t, 67 ddi_intr_handle_impl_t *, void *); 68 static int npe_fm_init(dev_info_t *, dev_info_t *, int, 69 ddi_iblock_cookie_t *); 70 71 static int npe_fm_callback(dev_info_t *, ddi_fm_error_t *, const void *); 72 73 /* 74 * Disable URs and Received MA for all PCIe devices. Until x86 SW is changed so 75 * that random drivers do not do PIO accesses on devices that it does not own, 76 * these error bits must be disabled. SERR must also be disabled if URs have 77 * been masked. 78 */ 79 uint32_t npe_aer_uce_mask = PCIE_AER_UCE_UR; 80 uint32_t npe_aer_ce_mask = 0; 81 uint32_t npe_aer_suce_mask = PCIE_AER_SUCE_RCVD_MA; 82 83 struct bus_ops npe_bus_ops = { 84 BUSO_REV, 85 npe_bus_map, 86 NULL, 87 NULL, 88 NULL, 89 i_ddi_map_fault, 90 ddi_dma_map, 91 ddi_dma_allochdl, 92 ddi_dma_freehdl, 93 ddi_dma_bindhdl, 94 ddi_dma_unbindhdl, 95 ddi_dma_flush, 96 ddi_dma_win, 97 ddi_dma_mctl, 98 npe_ctlops, 99 ddi_bus_prop_op, 100 0, /* (*bus_get_eventcookie)(); */ 101 0, /* (*bus_add_eventcall)(); */ 102 0, /* (*bus_remove_eventcall)(); */ 103 0, /* (*bus_post_event)(); */ 104 0, /* (*bus_intr_ctl)(); */ 105 0, /* (*bus_config)(); */ 106 0, /* (*bus_unconfig)(); */ 107 npe_fm_init, /* (*bus_fm_init)(); */ 108 NULL, /* (*bus_fm_fini)(); */ 109 NULL, /* (*bus_fm_access_enter)(); */ 110 NULL, /* (*bus_fm_access_exit)(); */ 111 NULL, /* (*bus_power)(); */ 112 npe_intr_ops, /* (*bus_intr_op)(); */ 113 pcie_hp_common_ops /* (*bus_hp_op)(); */ 114 }; 115 116 static int npe_open(dev_t *, int, int, cred_t *); 117 static int npe_close(dev_t, int, int, cred_t *); 118 static int npe_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 119 120 struct cb_ops npe_cb_ops = { 121 npe_open, /* open */ 122 npe_close, /* close */ 123 nodev, /* strategy */ 124 nodev, /* print */ 125 nodev, /* dump */ 126 nodev, /* read */ 127 nodev, /* write */ 128 npe_ioctl, /* ioctl */ 129 nodev, /* devmap */ 130 nodev, /* mmap */ 131 nodev, /* segmap */ 132 nochpoll, /* poll */ 133 pcie_prop_op, /* cb_prop_op */ 134 NULL, /* streamtab */ 135 D_NEW | D_MP | D_HOTPLUG, /* Driver compatibility flag */ 136 CB_REV, /* rev */ 137 nodev, /* int (*cb_aread)() */ 138 nodev /* int (*cb_awrite)() */ 139 }; 140 141 142 /* 143 * Device Node Operation functions 144 */ 145 static int npe_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 146 static int npe_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); 147 static int npe_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 148 149 struct dev_ops npe_ops = { 150 DEVO_REV, /* devo_rev */ 151 0, /* refcnt */ 152 npe_info, /* info */ 153 nulldev, /* identify */ 154 nulldev, /* probe */ 155 npe_attach, /* attach */ 156 npe_detach, /* detach */ 157 nulldev, /* reset */ 158 &npe_cb_ops, /* driver operations */ 159 &npe_bus_ops, /* bus operations */ 160 NULL, /* power */ 161 ddi_quiesce_not_needed, /* quiesce */ 162 }; 163 164 /* 165 * Internal routines in support of particular npe_ctlops. 166 */ 167 static int npe_removechild(dev_info_t *child); 168 static int npe_initchild(dev_info_t *child); 169 170 /* 171 * External support routine 172 */ 173 extern void npe_query_acpi_mcfg(dev_info_t *dip); 174 extern void npe_ck804_fix_aer_ptr(ddi_acc_handle_t cfg_hdl); 175 extern int npe_disable_empty_bridges_workaround(dev_info_t *child); 176 extern void npe_nvidia_error_workaround(ddi_acc_handle_t cfg_hdl); 177 extern void npe_intel_error_workaround(ddi_acc_handle_t cfg_hdl); 178 extern boolean_t npe_is_mmcfg_supported(dev_info_t *dip); 179 extern void npe_enable_htmsi_children(dev_info_t *dip); 180 extern int npe_save_htconfig_children(dev_info_t *dip); 181 extern int npe_restore_htconfig_children(dev_info_t *dip); 182 183 /* 184 * Module linkage information for the kernel. 185 */ 186 static struct modldrv modldrv = { 187 &mod_driverops, /* Type of module */ 188 "Host to PCIe nexus driver", /* Name of module */ 189 &npe_ops, /* driver ops */ 190 }; 191 192 static struct modlinkage modlinkage = { 193 MODREV_1, 194 (void *)&modldrv, 195 NULL 196 }; 197 198 /* Save minimal state. */ 199 void *npe_statep; 200 201 int 202 _init(void) 203 { 204 int e; 205 206 /* 207 * Initialize per-pci bus soft state pointer. 208 */ 209 e = ddi_soft_state_init(&npe_statep, sizeof (pci_state_t), 1); 210 if (e != 0) 211 return (e); 212 213 if ((e = mod_install(&modlinkage)) != 0) 214 ddi_soft_state_fini(&npe_statep); 215 216 return (e); 217 } 218 219 220 int 221 _fini(void) 222 { 223 int rc; 224 225 rc = mod_remove(&modlinkage); 226 if (rc != 0) 227 return (rc); 228 229 ddi_soft_state_fini(&npe_statep); 230 return (rc); 231 } 232 233 234 int 235 _info(struct modinfo *modinfop) 236 { 237 return (mod_info(&modlinkage, modinfop)); 238 } 239 240 /*ARGSUSED*/ 241 static int 242 npe_info(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) 243 { 244 minor_t minor = getminor((dev_t)arg); 245 int instance = PCI_MINOR_NUM_TO_INSTANCE(minor); 246 pci_state_t *pcip = ddi_get_soft_state(npe_statep, instance); 247 int ret = DDI_SUCCESS; 248 249 switch (cmd) { 250 case DDI_INFO_DEVT2INSTANCE: 251 *result = (void *)(intptr_t)instance; 252 break; 253 case DDI_INFO_DEVT2DEVINFO: 254 if (pcip == NULL) { 255 ret = DDI_FAILURE; 256 break; 257 } 258 259 *result = (void *)pcip->pci_dip; 260 break; 261 default: 262 ret = DDI_FAILURE; 263 break; 264 } 265 266 return (ret); 267 } 268 269 /*ARGSUSED*/ 270 static int 271 npe_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 272 { 273 int instance = ddi_get_instance(devi); 274 pci_state_t *pcip = NULL; 275 276 if (cmd == DDI_RESUME) { 277 /* 278 * the system might still be able to resume even if this fails 279 */ 280 (void) npe_restore_htconfig_children(devi); 281 return (DDI_SUCCESS); 282 } 283 284 /* 285 * We must do this here in order to ensure that all top level devices 286 * get their HyperTransport MSI mapping regs programmed first. 287 * "Memory controller" and "hostbridge" class devices are leaf devices 288 * that may affect MSI translation functionality for devices 289 * connected to the same link/bus. 290 * 291 * This will also program HT MSI mapping registers on root buses 292 * devices (basically sitting on an HT bus) that are not dependent 293 * on the aforementioned HT devices for MSI translation. 294 */ 295 npe_enable_htmsi_children(devi); 296 297 if (ddi_prop_update_string(DDI_DEV_T_NONE, devi, "device_type", 298 "pciex") != DDI_PROP_SUCCESS) { 299 cmn_err(CE_WARN, "npe: 'device_type' prop create failed"); 300 } 301 302 if (ddi_soft_state_zalloc(npe_statep, instance) == DDI_SUCCESS) 303 pcip = ddi_get_soft_state(npe_statep, instance); 304 305 if (pcip == NULL) 306 return (DDI_FAILURE); 307 308 pcip->pci_dip = devi; 309 pcip->pci_soft_state = PCI_SOFT_STATE_CLOSED; 310 311 pcie_rc_init_bus(devi); 312 313 if (pcie_init(devi, NULL) != DDI_SUCCESS) 314 goto fail1; 315 316 /* Second arg: initialize for pci_express root nexus */ 317 if (pcitool_init(devi, B_TRUE) != DDI_SUCCESS) 318 goto fail2; 319 320 pcip->pci_fmcap = DDI_FM_EREPORT_CAPABLE | DDI_FM_ERRCB_CAPABLE | 321 DDI_FM_ACCCHK_CAPABLE | DDI_FM_DMACHK_CAPABLE; 322 ddi_fm_init(devi, &pcip->pci_fmcap, &pcip->pci_fm_ibc); 323 324 if (pcip->pci_fmcap & DDI_FM_ERRCB_CAPABLE) { 325 ddi_fm_handler_register(devi, npe_fm_callback, NULL); 326 } 327 328 PCIE_DIP2PFD(devi) = kmem_zalloc(sizeof (pf_data_t), KM_SLEEP); 329 pcie_rc_init_pfd(devi, PCIE_DIP2PFD(devi)); 330 331 npe_query_acpi_mcfg(devi); 332 ddi_report_dev(devi); 333 334 return (DDI_SUCCESS); 335 336 fail2: 337 (void) pcie_uninit(devi); 338 fail1: 339 pcie_rc_fini_bus(devi); 340 ddi_soft_state_free(npe_statep, instance); 341 342 return (DDI_FAILURE); 343 } 344 345 /*ARGSUSED*/ 346 static int 347 npe_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 348 { 349 int instance = ddi_get_instance(devi); 350 pci_state_t *pcip; 351 352 pcip = ddi_get_soft_state(npe_statep, ddi_get_instance(devi)); 353 354 switch (cmd) { 355 case DDI_DETACH: 356 357 /* Uninitialize pcitool support. */ 358 pcitool_uninit(devi); 359 360 if (pcie_uninit(devi) != DDI_SUCCESS) 361 return (DDI_FAILURE); 362 363 if (pcip->pci_fmcap & DDI_FM_ERRCB_CAPABLE) 364 ddi_fm_handler_unregister(devi); 365 366 pcie_rc_fini_bus(devi); 367 pcie_rc_fini_pfd(PCIE_DIP2PFD(devi)); 368 kmem_free(PCIE_DIP2PFD(devi), sizeof (pf_data_t)); 369 370 ddi_fm_fini(devi); 371 ddi_soft_state_free(npe_statep, instance); 372 return (DDI_SUCCESS); 373 374 case DDI_SUSPEND: 375 /* 376 * the system might still be able to suspend/resume even if 377 * this fails 378 */ 379 (void) npe_save_htconfig_children(devi); 380 return (DDI_SUCCESS); 381 default: 382 return (DDI_FAILURE); 383 } 384 } 385 386 /* 387 * Configure the access handle for standard configuration space 388 * access (see pci_fm_acc_setup for code that initializes the 389 * access-function pointers). 390 */ 391 static int 392 npe_setup_std_pcicfg_acc(dev_info_t *rdip, ddi_map_req_t *mp, 393 ddi_acc_hdl_t *hp, off_t offset, off_t len) 394 { 395 int ret; 396 397 if ((ret = pci_fm_acc_setup(hp, offset, len)) == 398 DDI_SUCCESS) { 399 if (DDI_FM_ACC_ERR_CAP(ddi_fm_capable(rdip)) && 400 mp->map_handlep->ah_acc.devacc_attr_access 401 != DDI_DEFAULT_ACC) { 402 ndi_fmc_insert(rdip, ACC_HANDLE, 403 (void *)mp->map_handlep, NULL); 404 } 405 } 406 return (ret); 407 } 408 409 static int 410 npe_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp, 411 off_t offset, off_t len, caddr_t *vaddrp) 412 { 413 int rnumber; 414 int length; 415 int space; 416 ddi_acc_impl_t *ap; 417 ddi_acc_hdl_t *hp; 418 ddi_map_req_t mr; 419 pci_regspec_t pci_reg; 420 pci_regspec_t *pci_rp; 421 struct regspec reg; 422 pci_acc_cfblk_t *cfp; 423 int retval; 424 int64_t *ecfginfo; 425 uint_t nelem; 426 427 mr = *mp; /* Get private copy of request */ 428 mp = &mr; 429 430 /* 431 * check for register number 432 */ 433 switch (mp->map_type) { 434 case DDI_MT_REGSPEC: 435 pci_reg = *(pci_regspec_t *)(mp->map_obj.rp); 436 pci_rp = &pci_reg; 437 if (pci_common_get_reg_prop(rdip, pci_rp) != DDI_SUCCESS) 438 return (DDI_FAILURE); 439 break; 440 case DDI_MT_RNUMBER: 441 rnumber = mp->map_obj.rnumber; 442 /* 443 * get ALL "reg" properties for dip, select the one of 444 * of interest. In x86, "assigned-addresses" property 445 * is identical to the "reg" property, so there is no 446 * need to cross check the two to determine the physical 447 * address of the registers. 448 * This routine still performs some validity checks to 449 * make sure that everything is okay. 450 */ 451 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, rdip, 452 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, 453 (uint_t *)&length) != DDI_PROP_SUCCESS) 454 return (DDI_FAILURE); 455 456 /* 457 * validate the register number. 458 */ 459 length /= (sizeof (pci_regspec_t) / sizeof (int)); 460 if (rnumber >= length) { 461 ddi_prop_free(pci_rp); 462 return (DDI_FAILURE); 463 } 464 465 /* 466 * copy the required entry. 467 */ 468 pci_reg = pci_rp[rnumber]; 469 470 /* 471 * free the memory allocated by ddi_prop_lookup_int_array 472 */ 473 ddi_prop_free(pci_rp); 474 475 pci_rp = &pci_reg; 476 if (pci_common_get_reg_prop(rdip, pci_rp) != DDI_SUCCESS) 477 return (DDI_FAILURE); 478 mp->map_type = DDI_MT_REGSPEC; 479 break; 480 default: 481 return (DDI_ME_INVAL); 482 } 483 484 space = pci_rp->pci_phys_hi & PCI_REG_ADDR_M; 485 486 /* 487 * check for unmap and unlock of address space 488 */ 489 if ((mp->map_op == DDI_MO_UNMAP) || (mp->map_op == DDI_MO_UNLOCK)) { 490 switch (space) { 491 case PCI_ADDR_IO: 492 reg.regspec_bustype = 1; 493 break; 494 495 case PCI_ADDR_CONFIG: 496 /* 497 * If this is an unmap/unlock of a standard config 498 * space mapping (memory-mapped config space mappings 499 * would have the DDI_ACCATTR_CPU_VADDR bit set in the 500 * acc_attr), undo that setup here. 501 */ 502 if (NPE_IS_HANDLE_FOR_STDCFG_ACC(mp->map_handlep)) { 503 504 if (DDI_FM_ACC_ERR_CAP(ddi_fm_capable(rdip)) && 505 mp->map_handlep->ah_acc.devacc_attr_access 506 != DDI_DEFAULT_ACC) { 507 ndi_fmc_remove(rdip, ACC_HANDLE, 508 (void *)mp->map_handlep); 509 } 510 return (DDI_SUCCESS); 511 } 512 513 pci_rp->pci_size_low = PCIE_CONF_HDR_SIZE; 514 515 /* FALLTHROUGH */ 516 case PCI_ADDR_MEM64: 517 /* 518 * MEM64 requires special treatment on map, to check 519 * that the device is below 4G. On unmap, however, 520 * we can assume that everything is OK... the map 521 * must have succeeded. 522 */ 523 /* FALLTHROUGH */ 524 case PCI_ADDR_MEM32: 525 reg.regspec_bustype = 0; 526 break; 527 528 default: 529 return (DDI_FAILURE); 530 } 531 532 /* 533 * Adjust offset and length 534 * A non-zero length means override the one in the regspec. 535 */ 536 pci_rp->pci_phys_low += (uint_t)offset; 537 if (len != 0) 538 pci_rp->pci_size_low = len; 539 540 reg.regspec_addr = pci_rp->pci_phys_low; 541 reg.regspec_size = pci_rp->pci_size_low; 542 543 mp->map_obj.rp = ® 544 retval = ddi_map(dip, mp, (off_t)0, (off_t)0, vaddrp); 545 if (DDI_FM_ACC_ERR_CAP(ddi_fm_capable(rdip)) && 546 mp->map_handlep->ah_acc.devacc_attr_access != 547 DDI_DEFAULT_ACC) { 548 ndi_fmc_remove(rdip, ACC_HANDLE, 549 (void *)mp->map_handlep); 550 } 551 return (retval); 552 553 } 554 555 /* check for user mapping request - not legal for Config */ 556 if (mp->map_op == DDI_MO_MAP_HANDLE && space == PCI_ADDR_CONFIG) { 557 cmn_err(CE_NOTE, "npe: Config mapping request from user\n"); 558 return (DDI_FAILURE); 559 } 560 561 562 /* 563 * Note that pci_fm_acc_setup() is called to serve two purposes 564 * i) enable legacy PCI I/O style config space access 565 * ii) register with FMA 566 */ 567 if (space == PCI_ADDR_CONFIG) { 568 569 /* Can't map config space without a handle */ 570 hp = (ddi_acc_hdl_t *)mp->map_handlep; 571 if (hp == NULL) 572 return (DDI_FAILURE); 573 574 /* record the device address for future reference */ 575 cfp = (pci_acc_cfblk_t *)&hp->ah_bus_private; 576 cfp->c_busnum = PCI_REG_BUS_G(pci_rp->pci_phys_hi); 577 cfp->c_devnum = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 578 cfp->c_funcnum = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 579 580 *vaddrp = (caddr_t)offset; 581 582 /* Check if MMCFG is supported */ 583 if (!npe_is_mmcfg_supported(rdip)) { 584 return (npe_setup_std_pcicfg_acc(rdip, mp, hp, 585 offset, len)); 586 } 587 588 589 if (ddi_prop_lookup_int64_array(DDI_DEV_T_ANY, rdip, 0, 590 "ecfg", &ecfginfo, &nelem) == DDI_PROP_SUCCESS) { 591 592 if (nelem != 4 || 593 cfp->c_busnum < ecfginfo[2] || 594 cfp->c_busnum > ecfginfo[3]) { 595 /* 596 * Invalid property or Doesn't contain the 597 * requested bus; fall back to standard 598 * (I/O-based) config access. 599 */ 600 ddi_prop_free(ecfginfo); 601 return (npe_setup_std_pcicfg_acc(rdip, mp, hp, 602 offset, len)); 603 } else { 604 pci_rp->pci_phys_low = ecfginfo[0]; 605 606 ddi_prop_free(ecfginfo); 607 608 pci_rp->pci_phys_low += ((cfp->c_busnum << 20) | 609 (cfp->c_devnum) << 15 | 610 (cfp->c_funcnum << 12)); 611 612 pci_rp->pci_size_low = PCIE_CONF_HDR_SIZE; 613 } 614 } else { 615 /* 616 * Couldn't find the MMCFG property -- fall back to 617 * standard config access 618 */ 619 return (npe_setup_std_pcicfg_acc(rdip, mp, hp, 620 offset, len)); 621 } 622 } 623 624 length = pci_rp->pci_size_low; 625 626 /* 627 * range check 628 */ 629 if ((offset >= length) || (len > length) || (offset + len > length)) 630 return (DDI_FAILURE); 631 632 /* 633 * Adjust offset and length 634 * A non-zero length means override the one in the regspec. 635 */ 636 pci_rp->pci_phys_low += (uint_t)offset; 637 if (len != 0) 638 pci_rp->pci_size_low = len; 639 640 /* 641 * convert the pci regsec into the generic regspec used by the 642 * parent root nexus driver. 643 */ 644 switch (space) { 645 case PCI_ADDR_IO: 646 reg.regspec_bustype = 1; 647 break; 648 case PCI_ADDR_CONFIG: 649 case PCI_ADDR_MEM64: 650 /* 651 * We can't handle 64-bit devices that are mapped above 652 * 4G or that are larger than 4G. 653 */ 654 if (pci_rp->pci_phys_mid != 0 || pci_rp->pci_size_hi != 0) 655 return (DDI_FAILURE); 656 /* 657 * Other than that, we can treat them as 32-bit mappings 658 */ 659 /* FALLTHROUGH */ 660 case PCI_ADDR_MEM32: 661 reg.regspec_bustype = 0; 662 break; 663 default: 664 return (DDI_FAILURE); 665 } 666 667 reg.regspec_addr = pci_rp->pci_phys_low; 668 reg.regspec_size = pci_rp->pci_size_low; 669 670 mp->map_obj.rp = ® 671 retval = ddi_map(dip, mp, (off_t)0, (off_t)0, vaddrp); 672 if (retval == DDI_SUCCESS) { 673 /* 674 * For config space gets force use of cautious access routines. 675 * These will handle default and protected mode accesses too. 676 */ 677 if (space == PCI_ADDR_CONFIG) { 678 ap = (ddi_acc_impl_t *)mp->map_handlep; 679 ap->ahi_acc_attr &= ~DDI_ACCATTR_DIRECT; 680 ap->ahi_acc_attr |= DDI_ACCATTR_CONFIG_SPACE; 681 ap->ahi_get8 = i_ddi_caut_get8; 682 ap->ahi_get16 = i_ddi_caut_get16; 683 ap->ahi_get32 = i_ddi_caut_get32; 684 ap->ahi_get64 = i_ddi_caut_get64; 685 ap->ahi_rep_get8 = i_ddi_caut_rep_get8; 686 ap->ahi_rep_get16 = i_ddi_caut_rep_get16; 687 ap->ahi_rep_get32 = i_ddi_caut_rep_get32; 688 ap->ahi_rep_get64 = i_ddi_caut_rep_get64; 689 } 690 if (DDI_FM_ACC_ERR_CAP(ddi_fm_capable(rdip)) && 691 mp->map_handlep->ah_acc.devacc_attr_access != 692 DDI_DEFAULT_ACC) { 693 ndi_fmc_insert(rdip, ACC_HANDLE, 694 (void *)mp->map_handlep, NULL); 695 } 696 } 697 return (retval); 698 } 699 700 701 702 /*ARGSUSED*/ 703 static int 704 npe_ctlops(dev_info_t *dip, dev_info_t *rdip, 705 ddi_ctl_enum_t ctlop, void *arg, void *result) 706 { 707 int rn; 708 int totreg; 709 uint_t reglen; 710 pci_regspec_t *drv_regp; 711 struct attachspec *asp; 712 struct detachspec *dsp; 713 pci_state_t *pci_p = ddi_get_soft_state(npe_statep, 714 ddi_get_instance(dip)); 715 716 switch (ctlop) { 717 case DDI_CTLOPS_REPORTDEV: 718 if (rdip == (dev_info_t *)0) 719 return (DDI_FAILURE); 720 cmn_err(CE_CONT, "?PCI Express-device: %s@%s, %s%d\n", 721 ddi_node_name(rdip), ddi_get_name_addr(rdip), 722 ddi_driver_name(rdip), ddi_get_instance(rdip)); 723 return (DDI_SUCCESS); 724 725 case DDI_CTLOPS_INITCHILD: 726 return (npe_initchild((dev_info_t *)arg)); 727 728 case DDI_CTLOPS_UNINITCHILD: 729 return (npe_removechild((dev_info_t *)arg)); 730 731 case DDI_CTLOPS_SIDDEV: 732 return (DDI_SUCCESS); 733 734 case DDI_CTLOPS_REGSIZE: 735 case DDI_CTLOPS_NREGS: 736 if (rdip == (dev_info_t *)0) 737 return (DDI_FAILURE); 738 739 *(int *)result = 0; 740 if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, rdip, 741 DDI_PROP_DONTPASS, "reg", (int **)&drv_regp, 742 ®len) != DDI_PROP_SUCCESS) { 743 return (DDI_FAILURE); 744 } 745 746 totreg = (reglen * sizeof (int)) / sizeof (pci_regspec_t); 747 if (ctlop == DDI_CTLOPS_NREGS) 748 *(int *)result = totreg; 749 else if (ctlop == DDI_CTLOPS_REGSIZE) { 750 rn = *(int *)arg; 751 if (rn >= totreg) { 752 ddi_prop_free(drv_regp); 753 return (DDI_FAILURE); 754 } 755 *(off_t *)result = drv_regp[rn].pci_size_low; 756 } 757 ddi_prop_free(drv_regp); 758 759 return (DDI_SUCCESS); 760 761 case DDI_CTLOPS_POWER: 762 { 763 power_req_t *reqp = (power_req_t *)arg; 764 /* 765 * We currently understand reporting of PCI_PM_IDLESPEED 766 * capability. Everything else is passed up. 767 */ 768 if ((reqp->request_type == PMR_REPORT_PMCAP) && 769 (reqp->req.report_pmcap_req.cap == PCI_PM_IDLESPEED)) 770 return (DDI_SUCCESS); 771 772 break; 773 } 774 775 case DDI_CTLOPS_PEEK: 776 case DDI_CTLOPS_POKE: 777 return (pci_common_peekpoke(dip, rdip, ctlop, arg, result)); 778 779 /* X86 systems support PME wakeup from suspended state */ 780 case DDI_CTLOPS_ATTACH: 781 if (!pcie_is_child(dip, rdip)) 782 return (DDI_SUCCESS); 783 784 asp = (struct attachspec *)arg; 785 if ((asp->when == DDI_POST) && (asp->result == DDI_SUCCESS)) { 786 pf_init(rdip, (void *)pci_p->pci_fm_ibc, asp->cmd); 787 (void) pcie_postattach_child(rdip); 788 } 789 790 /* only do this for immediate children */ 791 if (asp->cmd == DDI_RESUME && asp->when == DDI_PRE && 792 ddi_get_parent(rdip) == dip) 793 if (pci_pre_resume(rdip) != DDI_SUCCESS) { 794 /* Not good, better stop now. */ 795 cmn_err(CE_PANIC, 796 "Couldn't pre-resume device %p", 797 (void *) dip); 798 /* NOTREACHED */ 799 } 800 801 return (DDI_SUCCESS); 802 803 case DDI_CTLOPS_DETACH: 804 if (!pcie_is_child(dip, rdip)) 805 return (DDI_SUCCESS); 806 807 dsp = (struct detachspec *)arg; 808 809 if (dsp->when == DDI_PRE) 810 pf_fini(rdip, dsp->cmd); 811 812 /* only do this for immediate children */ 813 if (dsp->cmd == DDI_SUSPEND && dsp->when == DDI_POST && 814 ddi_get_parent(rdip) == dip) 815 if (pci_post_suspend(rdip) != DDI_SUCCESS) 816 return (DDI_FAILURE); 817 818 return (DDI_SUCCESS); 819 820 default: 821 break; 822 } 823 824 return (ddi_ctlops(dip, rdip, ctlop, arg, result)); 825 826 } 827 828 829 /* 830 * npe_intr_ops 831 */ 832 static int 833 npe_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op, 834 ddi_intr_handle_impl_t *hdlp, void *result) 835 { 836 return (pci_common_intr_ops(pdip, rdip, intr_op, hdlp, result)); 837 } 838 839 840 static int 841 npe_initchild(dev_info_t *child) 842 { 843 char name[80]; 844 pcie_bus_t *bus_p; 845 uint32_t regs; 846 ddi_acc_handle_t cfg_hdl; 847 848 /* 849 * Do not bind drivers to empty bridges. 850 * Fail above, if the bridge is found to be hotplug capable 851 */ 852 if (npe_disable_empty_bridges_workaround(child) == 1) 853 return (DDI_FAILURE); 854 855 if (pci_common_name_child(child, name, 80) != DDI_SUCCESS) 856 return (DDI_FAILURE); 857 858 ddi_set_name_addr(child, name); 859 860 /* 861 * Pseudo nodes indicate a prototype node with per-instance 862 * properties to be merged into the real h/w device node. 863 * The interpretation of the unit-address is DD[,F] 864 * where DD is the device id and F is the function. 865 */ 866 if (ndi_dev_is_persistent_node(child) == 0) { 867 extern int pci_allow_pseudo_children; 868 869 ddi_set_parent_data(child, NULL); 870 871 /* 872 * Try to merge the properties from this prototype 873 * node into real h/w nodes. 874 */ 875 if (ndi_merge_node(child, pci_common_name_child) == 876 DDI_SUCCESS) { 877 /* 878 * Merged ok - return failure to remove the node. 879 */ 880 ddi_set_name_addr(child, NULL); 881 return (DDI_FAILURE); 882 } 883 884 /* workaround for DDIVS to run under PCI Express */ 885 if (pci_allow_pseudo_children) { 886 /* 887 * If the "interrupts" property doesn't exist, 888 * this must be the ddivs no-intr case, and it returns 889 * DDI_SUCCESS instead of DDI_FAILURE. 890 */ 891 if (ddi_prop_get_int(DDI_DEV_T_ANY, child, 892 DDI_PROP_DONTPASS, "interrupts", -1) == -1) 893 return (DDI_SUCCESS); 894 /* 895 * Create the ddi_parent_private_data for a pseudo 896 * child. 897 */ 898 pci_common_set_parent_private_data(child); 899 return (DDI_SUCCESS); 900 } 901 902 /* 903 * The child was not merged into a h/w node, 904 * but there's not much we can do with it other 905 * than return failure to cause the node to be removed. 906 */ 907 cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", 908 ddi_get_name(child), ddi_get_name_addr(child), 909 ddi_get_name(child)); 910 ddi_set_name_addr(child, NULL); 911 return (DDI_NOT_WELL_FORMED); 912 } 913 914 if (ddi_prop_get_int(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, 915 "interrupts", -1) != -1) 916 pci_common_set_parent_private_data(child); 917 else 918 ddi_set_parent_data(child, NULL); 919 920 /* Disable certain errors on PCIe drivers for x86 platforms */ 921 regs = pcie_get_aer_uce_mask() | npe_aer_uce_mask; 922 pcie_set_aer_uce_mask(regs); 923 regs = pcie_get_aer_ce_mask() | npe_aer_ce_mask; 924 pcie_set_aer_ce_mask(regs); 925 regs = pcie_get_aer_suce_mask() | npe_aer_suce_mask; 926 pcie_set_aer_suce_mask(regs); 927 928 /* 929 * If URs are disabled, mask SERRs as well, otherwise the system will 930 * still be notified of URs 931 */ 932 if (npe_aer_uce_mask & PCIE_AER_UCE_UR) 933 pcie_set_serr_mask(1); 934 935 if (pci_config_setup(child, &cfg_hdl) == DDI_SUCCESS) { 936 npe_ck804_fix_aer_ptr(cfg_hdl); 937 npe_nvidia_error_workaround(cfg_hdl); 938 npe_intel_error_workaround(cfg_hdl); 939 pci_config_teardown(&cfg_hdl); 940 } 941 942 bus_p = pcie_init_bus(child); 943 if (bus_p) { 944 uint16_t device_id = (uint16_t)(bus_p->bus_dev_ven_id >> 16); 945 uint16_t vendor_id = (uint16_t)(bus_p->bus_dev_ven_id & 0xFFFF); 946 uint16_t rev_id = bus_p->bus_rev_id; 947 948 /* Disable AER for certain NVIDIA Chipsets */ 949 if ((vendor_id == NVIDIA_VENDOR_ID) && 950 (device_id == NVIDIA_CK804_DEVICE_ID) && 951 (rev_id < NVIDIA_CK804_AER_VALID_REVID)) 952 bus_p->bus_aer_off = 0; 953 954 (void) pcie_initchild(child); 955 } 956 957 return (DDI_SUCCESS); 958 } 959 960 961 static int 962 npe_removechild(dev_info_t *dip) 963 { 964 pcie_uninitchild(dip); 965 966 ddi_set_name_addr(dip, NULL); 967 968 /* 969 * Strip the node to properly convert it back to prototype form 970 */ 971 ddi_remove_minor_node(dip, NULL); 972 973 ddi_prop_remove_all(dip); 974 975 return (DDI_SUCCESS); 976 } 977 978 static int 979 npe_open(dev_t *devp, int flags, int otyp, cred_t *credp) 980 { 981 minor_t minor = getminor(*devp); 982 int instance = PCI_MINOR_NUM_TO_INSTANCE(minor); 983 pci_state_t *pci_p = ddi_get_soft_state(npe_statep, instance); 984 int rv; 985 986 /* 987 * Make sure the open is for the right file type. 988 */ 989 if (otyp != OTYP_CHR) 990 return (EINVAL); 991 992 if (pci_p == NULL) 993 return (ENXIO); 994 995 mutex_enter(&pci_p->pci_mutex); 996 switch (PCI_MINOR_NUM_TO_PCI_DEVNUM(minor)) { 997 case PCI_TOOL_REG_MINOR_NUM: 998 case PCI_TOOL_INTR_MINOR_NUM: 999 break; 1000 default: 1001 /* Handle devctl ioctls */ 1002 rv = pcie_open(pci_p->pci_dip, devp, flags, otyp, credp); 1003 mutex_exit(&pci_p->pci_mutex); 1004 return (rv); 1005 } 1006 1007 /* Handle pcitool ioctls */ 1008 if (flags & FEXCL) { 1009 if (pci_p->pci_soft_state != PCI_SOFT_STATE_CLOSED) { 1010 mutex_exit(&pci_p->pci_mutex); 1011 cmn_err(CE_NOTE, "npe_open: busy"); 1012 return (EBUSY); 1013 } 1014 pci_p->pci_soft_state = PCI_SOFT_STATE_OPEN_EXCL; 1015 } else { 1016 if (pci_p->pci_soft_state == PCI_SOFT_STATE_OPEN_EXCL) { 1017 mutex_exit(&pci_p->pci_mutex); 1018 cmn_err(CE_NOTE, "npe_open: busy"); 1019 return (EBUSY); 1020 } 1021 pci_p->pci_soft_state = PCI_SOFT_STATE_OPEN; 1022 } 1023 mutex_exit(&pci_p->pci_mutex); 1024 1025 return (0); 1026 } 1027 1028 static int 1029 npe_close(dev_t dev, int flags, int otyp, cred_t *credp) 1030 { 1031 minor_t minor = getminor(dev); 1032 int instance = PCI_MINOR_NUM_TO_INSTANCE(minor); 1033 pci_state_t *pci_p = ddi_get_soft_state(npe_statep, instance); 1034 int rv; 1035 1036 if (pci_p == NULL) 1037 return (ENXIO); 1038 1039 mutex_enter(&pci_p->pci_mutex); 1040 1041 switch (PCI_MINOR_NUM_TO_PCI_DEVNUM(minor)) { 1042 case PCI_TOOL_REG_MINOR_NUM: 1043 case PCI_TOOL_INTR_MINOR_NUM: 1044 break; 1045 default: 1046 /* Handle devctl ioctls */ 1047 rv = pcie_close(pci_p->pci_dip, dev, flags, otyp, credp); 1048 mutex_exit(&pci_p->pci_mutex); 1049 return (rv); 1050 } 1051 1052 /* Handle pcitool ioctls */ 1053 pci_p->pci_soft_state = PCI_SOFT_STATE_CLOSED; 1054 mutex_exit(&pci_p->pci_mutex); 1055 return (0); 1056 } 1057 1058 static int 1059 npe_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp, int *rvalp) 1060 { 1061 minor_t minor = getminor(dev); 1062 int instance = PCI_MINOR_NUM_TO_INSTANCE(minor); 1063 pci_state_t *pci_p = ddi_get_soft_state(npe_statep, instance); 1064 int ret = ENOTTY; 1065 1066 if (pci_p == NULL) 1067 return (ENXIO); 1068 1069 switch (PCI_MINOR_NUM_TO_PCI_DEVNUM(minor)) { 1070 case PCI_TOOL_REG_MINOR_NUM: 1071 case PCI_TOOL_INTR_MINOR_NUM: 1072 /* To handle pcitool related ioctls */ 1073 ret = pci_common_ioctl(pci_p->pci_dip, dev, cmd, arg, mode, 1074 credp, rvalp); 1075 break; 1076 default: 1077 /* To handle devctl and hotplug related ioctls */ 1078 ret = pcie_ioctl(pci_p->pci_dip, dev, cmd, arg, mode, credp, 1079 rvalp); 1080 break; 1081 } 1082 1083 return (ret); 1084 } 1085 1086 /*ARGSUSED*/ 1087 static int 1088 npe_fm_init(dev_info_t *dip, dev_info_t *tdip, int cap, 1089 ddi_iblock_cookie_t *ibc) 1090 { 1091 pci_state_t *pcip = ddi_get_soft_state(npe_statep, 1092 ddi_get_instance(dip)); 1093 1094 ASSERT(ibc != NULL); 1095 *ibc = pcip->pci_fm_ibc; 1096 1097 return (pcip->pci_fmcap); 1098 } 1099 1100 /*ARGSUSED*/ 1101 static int 1102 npe_fm_callback(dev_info_t *dip, ddi_fm_error_t *derr, const void *no_used) 1103 { 1104 /* 1105 * On current x86 systems, npe's callback does not get called for failed 1106 * loads. If in the future this feature is used, the fault PA should be 1107 * logged in the derr->fme_bus_specific field. The appropriate PCIe 1108 * error handling code should be called and needs to be coordinated with 1109 * safe access handling. 1110 */ 1111 1112 return (DDI_FM_OK); 1113 } 1114
Indexes created Sun Nov 22 02:52:53 UTC 2009
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