arch/ia64/sn/kernel/io_common.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2006 Silicon Graphics, Inc. All rights reserved.
   7  */
   8
   9 #include <linux/bootmem.h>
  10 #include <asm/sn/types.h>
  11 #include <asm/sn/addrs.h>
  12 #include <asm/sn/sn_feature_sets.h>
  13 #include <asm/sn/geo.h>
  14 #include <asm/sn/io.h>
  15 #include <asm/sn/l1.h>
  16 #include <asm/sn/module.h>
  17 #include <asm/sn/pcibr_provider.h>
  18 #include <asm/sn/pcibus_provider_defs.h>
  19 #include <asm/sn/pcidev.h>
  20 #include <asm/sn/simulator.h>
  21 #include <asm/sn/sn_sal.h>
  22 #include <asm/sn/tioca_provider.h>
  23 #include <asm/sn/tioce_provider.h>
  24 #include "xtalk/hubdev.h"
  25 #include "xtalk/xwidgetdev.h"
  26 #include <linux/acpi.h>
  27 #include <asm/sn/sn2/sn_hwperf.h>
  28 #include <asm/sn/acpi.h>
  29
  30 extern void sn_init_cpei_timer(void);
  31 extern void register_sn_procfs(void);
  32 extern void sn_acpi_bus_fixup(struct pci_bus *);
  33 extern void sn_bus_fixup(struct pci_bus *);
  34 extern void sn_acpi_slot_fixup(struct pci_dev *, struct pcidev_info *);
  35 extern void sn_more_slot_fixup(struct pci_dev *, struct pcidev_info *);
  36 extern void sn_legacy_pci_window_fixup(struct pci_controller *, u64, u64);
  37 extern void sn_io_acpi_init(void);
  38 extern void sn_io_init(void);
  39
  40
  41 static struct list_head sn_sysdata_list;
  42
  43 /* sysdata list struct */
  44 struct sysdata_el {
  45         struct list_head entry;
  46         void *sysdata;
  47 };
  48
  49 int sn_ioif_inited;             /* SN I/O infrastructure initialized? */
  50
  51 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
  52
  53 /*
  54  * Hooks and struct for unsupported pci providers
  55  */
  56
  57 static dma_addr_t
  58 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)
  59 {
  60         return 0;
  61 }
  62
  63 static void
  64 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
  65 {
  66         return;
  67 }
  68
  69 static void *
  70 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
  71 {
  72         return NULL;
  73 }
  74
  75 static struct sn_pcibus_provider sn_pci_default_provider = {
  76         .dma_map = sn_default_pci_map,
  77         .dma_map_consistent = sn_default_pci_map,
  78         .dma_unmap = sn_default_pci_unmap,
  79         .bus_fixup = sn_default_pci_bus_fixup,
  80 };
  81
  82 /*
  83  * Retrieve the DMA Flush List given nasid, widget, and device.
  84  * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
  85  */
  86 static inline u64
  87 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
  88                              u64 address)
  89 {
  90         struct ia64_sal_retval ret_stuff;
  91         ret_stuff.status = 0;
  92         ret_stuff.v0 = 0;
  93
  94         SAL_CALL_NOLOCK(ret_stuff,
  95                         (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
  96                         (u64) nasid, (u64) widget_num,
  97                         (u64) device_num, (u64) address, 0, 0, 0);
  98         return ret_stuff.status;
  99 }
 100
 101 /*
 102  * Retrieve the pci device information given the bus and device|function number.
 103  */
 104 static inline u64
 105 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
 106                     u64 sn_irq_info)
 107 {
 108         struct ia64_sal_retval ret_stuff;
 109         ret_stuff.status = 0;
 110         ret_stuff.v0 = 0;
 111
 112         SAL_CALL_NOLOCK(ret_stuff,
 113                         (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
 114                         (u64) segment, (u64) bus_number, (u64) devfn,
 115                         (u64) pci_dev,
 116                         sn_irq_info, 0, 0);
 117         return ret_stuff.v0;
 118 }
 119
 120 /*
 121  * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
 122  *                        device.
 123  */
 124 inline struct pcidev_info *
 125 sn_pcidev_info_get(struct pci_dev *dev)
 126 {
 127         struct pcidev_info *pcidev;
 128
 129         list_for_each_entry(pcidev,
 130                             &(SN_PLATFORM_DATA(dev)->pcidev_info), pdi_list) {
 131                 if (pcidev->pdi_linux_pcidev == dev)
 132                         return pcidev;
 133         }
 134         return NULL;
 135 }
 136
 137 /* Older PROM flush WAR
 138  *
 139  * 01/16/06 -- This war will be in place until a new official PROM is released.
 140  * Additionally note that the struct sn_flush_device_war also has to be
 141  * removed from arch/ia64/sn/include/xtalk/hubdev.h
 142  */
 143 static u8 war_implemented = 0;
 144
 145 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
 146                                struct sn_flush_device_common *common)
 147 {
 148         struct sn_flush_device_war *war_list;
 149         struct sn_flush_device_war *dev_entry;
 150         struct ia64_sal_retval isrv = {0,0,0,0};
 151
 152         if (!war_implemented) {
 153                 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
 154                        "PROM flush WAR\n");
 155                 war_implemented = 1;
 156         }
 157
 158         war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
 159         if (!war_list)
 160                 BUG();
 161
 162         SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
 163                         nasid, widget, __pa(war_list), 0, 0, 0 ,0);
 164         if (isrv.status)
 165                 panic("sn_device_fixup_war failed: %s\n",
 166                       ia64_sal_strerror(isrv.status));
 167
 168         dev_entry = war_list + device;
 169         memcpy(common,dev_entry, sizeof(*common));
 170         kfree(war_list);
 171
 172         return isrv.status;
 173 }
 174
 175 /*
 176  * sn_common_hubdev_init() - This routine is called to initialize the HUB data
 177  *                           structure for each node in the system.
 178  */
 179 void __init
 180 sn_common_hubdev_init(struct hubdev_info *hubdev)
 181 {
 182
 183         struct sn_flush_device_kernel *sn_flush_device_kernel;
 184         struct sn_flush_device_kernel *dev_entry;
 185         s64 status;
 186         int widget, device, size;
 187
 188         /* Attach the error interrupt handlers */
 189         if (hubdev->hdi_nasid & 1)      /* If TIO */
 190                 ice_error_init(hubdev);
 191         else
 192                 hub_error_init(hubdev);
 193
 194         for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
 195                 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
 196
 197         if (!hubdev->hdi_flush_nasid_list.widget_p)
 198                 return;
 199
 200         size = (HUB_WIDGET_ID_MAX + 1) *
 201                 sizeof(struct sn_flush_device_kernel *);
 202         hubdev->hdi_flush_nasid_list.widget_p =
 203                 kzalloc(size, GFP_KERNEL);
 204         if (!hubdev->hdi_flush_nasid_list.widget_p)
 205                 BUG();
 206
 207         for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
 208                 size = DEV_PER_WIDGET *
 209                         sizeof(struct sn_flush_device_kernel);
 210                 sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
 211                 if (!sn_flush_device_kernel)
 212                         BUG();
 213
 214                 dev_entry = sn_flush_device_kernel;
 215                 for (device = 0; device < DEV_PER_WIDGET;
 216                      device++, dev_entry++) {
 217                         size = sizeof(struct sn_flush_device_common);
 218                         dev_entry->common = kzalloc(size, GFP_KERNEL);
 219                         if (!dev_entry->common)
 220                                 BUG();
 221                         if (sn_prom_feature_available(PRF_DEVICE_FLUSH_LIST))
 222                                 status = sal_get_device_dmaflush_list(
 223                                              hubdev->hdi_nasid, widget, device,
 224                                              (u64)(dev_entry->common));
 225                         else
 226                                 status = sn_device_fixup_war(hubdev->hdi_nasid,
 227                                                              widget, device,
 228                                                              dev_entry->common);
 229                         if (status != SALRET_OK)
 230                                 panic("SAL call failed: %s\n",
 231                                       ia64_sal_strerror(status));
 232
 233                         spin_lock_init(&dev_entry->sfdl_flush_lock);
 234                 }
 235
 236                 if (sn_flush_device_kernel)
 237                         hubdev->hdi_flush_nasid_list.widget_p[widget] =
 238                                                          sn_flush_device_kernel;
 239         }
 240 }
 241
 242 void sn_pci_unfixup_slot(struct pci_dev *dev)
 243 {
 244         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
 245
 246         sn_irq_unfixup(dev);
 247         pci_dev_put(host_pci_dev);
 248         pci_dev_put(dev);
 249 }
 250
 251 /*
 252  * sn_pci_fixup_slot() - This routine sets up a slot's resources consistent
 253  *                       with the Linux PCI abstraction layer. Resources
 254  *                       acquired from our PCI provider include PIO maps
 255  *                       to BAR space and interrupt objects.
 256  */
 257 void sn_pci_fixup_slot(struct pci_dev *dev)
 258 {
 259         int segment = pci_domain_nr(dev->bus);
 260         int status = 0;
 261         struct pcibus_bussoft *bs;
 262         struct pci_bus *host_pci_bus;
 263         struct pci_dev *host_pci_dev;
 264         struct pcidev_info *pcidev_info;
 265         struct sn_irq_info *sn_irq_info;
 266         unsigned int bus_no, devfn;
 267
 268         pci_dev_get(dev); /* for the sysdata pointer */
 269         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
 270         if (!pcidev_info)
 271                 BUG();          /* Cannot afford to run out of memory */
 272
 273         sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
 274         if (!sn_irq_info)
 275                 BUG();          /* Cannot afford to run out of memory */
 276
 277         /* Call to retrieve pci device information needed by kernel. */
 278         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
 279                                      dev->devfn,
 280                                      (u64) __pa(pcidev_info),
 281                                      (u64) __pa(sn_irq_info));
 282         if (status)
 283                 BUG(); /* Cannot get platform pci device information */
 284
 285         /* Add pcidev_info to list in pci_controller.platform_data */
 286         list_add_tail(&pcidev_info->pdi_list,
 287                       &(SN_PLATFORM_DATA(dev->bus)->pcidev_info));
 288
 289         if (SN_ACPI_BASE_SUPPORT())
 290                 sn_acpi_slot_fixup(dev, pcidev_info);
 291         else
 292                 sn_more_slot_fixup(dev, pcidev_info);
 293         /*
 294          * Using the PROMs values for the PCI host bus, get the Linux
 295          * PCI host_pci_dev struct and set up host bus linkages
 296          */
 297
 298         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
 299         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
 300         host_pci_bus = pci_find_bus(segment, bus_no);
 301         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
 302
 303         pcidev_info->host_pci_dev = host_pci_dev;
 304         pcidev_info->pdi_linux_pcidev = dev;
 305         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
 306         bs = SN_PCIBUS_BUSSOFT(dev->bus);
 307         pcidev_info->pdi_pcibus_info = bs;
 308
 309         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
 310                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
 311         } else {
 312                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
 313         }
 314
 315         /* Only set up IRQ stuff if this device has a host bus context */
 316         if (bs && sn_irq_info->irq_irq) {
 317                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
 318                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
 319                 sn_irq_fixup(dev, sn_irq_info);
 320         } else {
 321                 pcidev_info->pdi_sn_irq_info = NULL;
 322                 kfree(sn_irq_info);
 323         }
 324 }
 325
 326 /*
 327  * sn_common_bus_fixup - Perform platform specific bus fixup.
 328  *                       Execute the ASIC specific fixup routine
 329  *                       for this bus.
 330  */
 331 void
 332 sn_common_bus_fixup(struct pci_bus *bus,
 333                     struct pcibus_bussoft *prom_bussoft_ptr)
 334 {
 335         int cnode;
 336         struct pci_controller *controller;
 337         struct hubdev_info *hubdev_info;
 338         int nasid;
 339         void *provider_soft;
 340         struct sn_pcibus_provider *provider;
 341         struct sn_platform_data *sn_platform_data;
 342
 343         controller = PCI_CONTROLLER(bus);
 344         /*
 345          * Per-provider fixup.  Copies the bus soft structure from prom
 346          * to local area and links SN_PCIBUS_BUSSOFT().
 347          */
 348
 349         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
 350                 printk(KERN_WARNING "sn_common_bus_fixup: Unsupported asic type, %d",
 351                        prom_bussoft_ptr->bs_asic_type);
 352                 return;
 353         }
 354
 355         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
 356                 return; /* no further fixup necessary */
 357
 358         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
 359         if (provider == NULL)
 360                 panic("sn_common_bus_fixup: No provider registered for this asic type, %d",
 361                       prom_bussoft_ptr->bs_asic_type);
 362
 363         if (provider->bus_fixup)
 364                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr,
 365                                  controller);
 366         else
 367                 provider_soft = NULL;
 368
 369         /*
 370          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
 371          * after this point.
 372          */
 373         controller->platform_data = kzalloc(sizeof(struct sn_platform_data),
 374                                             GFP_KERNEL);
 375         if (controller->platform_data == NULL)
 376                 BUG();
 377         sn_platform_data =
 378                         (struct sn_platform_data *) controller->platform_data;
 379         sn_platform_data->provider_soft = provider_soft;
 380         INIT_LIST_HEAD(&((struct sn_platform_data *)
 381                          controller->platform_data)->pcidev_info);
 382         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
 383         cnode = nasid_to_cnodeid(nasid);
 384         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 385         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
 386             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 387
 388         /*
 389          * If the node information we obtained during the fixup phase is
 390          * invalid then set controller->node to -1 (undetermined)
 391          */
 392         if (controller->node >= num_online_nodes()) {
 393                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 394
 395                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 396                        "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 397                        b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 398                        b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
 399                 printk(KERN_WARNING "on node %d but only %d nodes online."
 400                        "Association set to undetermined.\n",
 401                        controller->node, num_online_nodes());
 402                 controller->node = -1;
 403         }
 404 }
 405
 406 void sn_bus_store_sysdata(struct pci_dev *dev)
 407 {
 408         struct sysdata_el *element;
 409
 410         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
 411         if (!element) {
 412                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
 413                 return;
 414         }
 415         element->sysdata = SN_PCIDEV_INFO(dev);
 416         list_add(&element->entry, &sn_sysdata_list);
 417 }
 418
 419 void sn_bus_free_sysdata(void)
 420 {
 421         struct sysdata_el *element;
 422         struct list_head *list, *safe;
 423
 424         list_for_each_safe(list, safe, &sn_sysdata_list) {
 425                 element = list_entry(list, struct sysdata_el, entry);
 426                 list_del(&element->entry);
 427                 list_del(&(((struct pcidev_info *)
 428                              (element->sysdata))->pdi_list));
 429                 kfree(element->sysdata);
 430                 kfree(element);
 431         }
 432         return;
 433 }
 434
 435 /*
 436  * hubdev_init_node() - Creates the HUB data structure and link them to it's
 437  *                      own NODE specific data area.
 438  */
 439 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 440 {
 441         struct hubdev_info *hubdev_info;
 442         int size;
 443         pg_data_t *pg;
 444
 445         size = sizeof(struct hubdev_info);
 446
 447         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
 448                 pg = NODE_DATA(0);
 449         else
 450                 pg = NODE_DATA(node);
 451
 452         hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
 453
 454         npda->pdinfo = (void *)hubdev_info;
 455 }
 456
 457 geoid_t
 458 cnodeid_get_geoid(cnodeid_t cnode)
 459 {
 460         struct hubdev_info *hubdev;
 461
 462         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 463         return hubdev->hdi_geoid;
 464 }
 465
 466 void sn_generate_path(struct pci_bus *pci_bus, char *address)
 467 {
 468         nasid_t nasid;
 469         cnodeid_t cnode;
 470         geoid_t geoid;
 471         moduleid_t moduleid;
 472         u16 bricktype;
 473
 474         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);
 475         cnode = nasid_to_cnodeid(nasid);
 476         geoid = cnodeid_get_geoid(cnode);
 477         moduleid = geo_module(geoid);
 478
 479         sprintf(address, "module_%c%c%c%c%.2d",
 480                 '0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),
 481                 '0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),
 482                 '0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),
 483                 MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));
 484
 485         /* Tollhouse requires slot id to be displayed */
 486         bricktype = MODULE_GET_BTYPE(moduleid);
 487         if ((bricktype == L1_BRICKTYPE_191010) ||
 488             (bricktype == L1_BRICKTYPE_1932))
 489                         sprintf(address, "%s^%d", address, geo_slot(geoid));
 490 }
 491
 492 /*
 493  * sn_pci_fixup_bus() - Perform SN specific setup of software structs
 494  *                      (pcibus_bussoft, pcidev_info) and hardware
 495  *                      registers, for the specified bus and devices under it.
 496  */
 497 void __devinit
 498 sn_pci_fixup_bus(struct pci_bus *bus)
 499 {
 500
 501         if (SN_ACPI_BASE_SUPPORT())
 502                 sn_acpi_bus_fixup(bus);
 503         else
 504                 sn_bus_fixup(bus);
 505 }
 506
 507 /*
 508  * sn_io_early_init - Perform early IO (and some non-IO) initialization.
 509  *                    In particular, setup the sn_pci_provider[] array.
 510  *                    This needs to be done prior to any bus scanning
 511  *                    (acpi_scan_init()) in the ACPI case, as the SN
 512  *                    bus fixup code will reference the array.
 513  */
 514 static int __init
 515 sn_io_early_init(void)
 516 {
 517         int i;
 518
 519         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 520                 return 0;
 521
 522         /*
 523          * prime sn_pci_provider[].  Individial provider init routines will
 524          * override their respective default entries.
 525          */
 526
 527         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
 528                 sn_pci_provider[i] = &sn_pci_default_provider;
 529
 530         pcibr_init_provider();
 531         tioca_init_provider();
 532         tioce_init_provider();
 533
 534         /*
 535          * This is needed to avoid bounce limit checks in the blk layer
 536          */
 537         ia64_max_iommu_merge_mask = ~PAGE_MASK;
 538
 539         sn_irq_lh_init();
 540         INIT_LIST_HEAD(&sn_sysdata_list);
 541         sn_init_cpei_timer();
 542
 543 #ifdef CONFIG_PROC_FS
 544         register_sn_procfs();
 545 #endif
 546
 547         printk(KERN_INFO "ACPI  DSDT OEM Rev 0x%x\n",
 548                acpi_gbl_DSDT->oem_revision);
 549         if (SN_ACPI_BASE_SUPPORT())
 550                 sn_io_acpi_init();
 551         else
 552                 sn_io_init();
 553         return 0;
 554 }
 555
 556 arch_initcall(sn_io_early_init);
 557
 558 /*
 559  * sn_io_late_init() - Perform any final platform specific IO initialization.
 560  */
 561
 562 int __init
 563 sn_io_late_init(void)
 564 {
 565         struct pci_bus *bus;
 566         struct pcibus_bussoft *bussoft;
 567         cnodeid_t cnode;
 568         nasid_t nasid;
 569         cnodeid_t near_cnode;
 570
 571         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 572                 return 0;
 573
 574         /*
 575          * Setup closest node in pci_controller->node for
 576          * PIC, TIOCP, TIOCE (TIOCA does it during bus fixup using
 577          * info from the PROM).
 578          */
 579         bus = NULL;
 580         while ((bus = pci_find_next_bus(bus)) != NULL) {
 581                 bussoft = SN_PCIBUS_BUSSOFT(bus);
 582                 nasid = NASID_GET(bussoft->bs_base);
 583                 cnode = nasid_to_cnodeid(nasid);
 584                 if ((bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) ||
 585                     (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE)) {
 586                         /* TIO PCI Bridge: find nearest node with CPUs */
 587                         int e = sn_hwperf_get_nearest_node(cnode, NULL,
 588                                                            &near_cnode);
 589                         if (e < 0) {
 590                                 near_cnode = (cnodeid_t)-1; /* use any node */
 591                                 printk(KERN_WARNING "pcibr_bus_fixup: failed "
 592                                        "to find near node with CPUs to TIO "
 593                                        "node %d, err=%d\n", cnode, e);
 594                         }
 595                         PCI_CONTROLLER(bus)->node = near_cnode;
 596                 } else if (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC) {
 597                         PCI_CONTROLLER(bus)->node = cnode;
 598                 }
 599         }
 600
 601         sn_ioif_inited = 1;     /* SN I/O infrastructure now initialized */
 602
 603         return 0;
 604 }
 605
 606 fs_initcall(sn_io_late_init);
 607
 608 EXPORT_SYMBOL(sn_pci_fixup_slot);
 609 EXPORT_SYMBOL(sn_pci_unfixup_slot);
 610 EXPORT_SYMBOL(sn_bus_store_sysdata);
 611 EXPORT_SYMBOL(sn_bus_free_sysdata);
 612 EXPORT_SYMBOL(sn_generate_path);
 613