arch/ia64/sn/kernel/io_init.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) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
   7  */
   8
   9 #include <linux/bootmem.h>
  10 #include <linux/nodemask.h>
  11 #include <asm/sn/types.h>
  12 #include <asm/sn/addrs.h>
  13 #include <asm/sn/geo.h>
  14 #include <asm/sn/io.h>
  15 #include <asm/sn/pcibr_provider.h>
  16 #include <asm/sn/pcibus_provider_defs.h>
  17 #include <asm/sn/pcidev.h>
  18 #include <asm/sn/simulator.h>
  19 #include <asm/sn/sn_sal.h>
  20 #include <asm/sn/tioca_provider.h>
  21 #include <asm/sn/tioce_provider.h>
  22 #include "xtalk/hubdev.h"
  23 #include "xtalk/xwidgetdev.h"
  24
  25 static struct list_head sn_sysdata_list;
  26
  27 /* sysdata list struct */
  28 struct sysdata_el {
  29         struct list_head entry;
  30         void *sysdata;
  31 };
  32
  33 struct slab_info {
  34         struct hubdev_info hubdev;
  35 };
  36
  37 struct brick {
  38         moduleid_t id;          /* Module ID of this module        */
  39         struct slab_info slab_info[MAX_SLABS + 1];
  40 };
  41
  42 int sn_ioif_inited = 0;         /* SN I/O infrastructure initialized? */
  43
  44 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
  45
  46 static int max_segment_number = 0; /* Default highest segment number */
  47 static int max_pcibus_number = 255; /* Default highest pci bus number */
  48
  49 /*
  50  * Hooks and struct for unsupported pci providers
  51  */
  52
  53 static dma_addr_t
  54 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
  55 {
  56         return 0;
  57 }
  58
  59 static void
  60 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
  61 {
  62         return;
  63 }
  64
  65 static void *
  66 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
  67 {
  68         return NULL;
  69 }
  70
  71 static struct sn_pcibus_provider sn_pci_default_provider = {
  72         .dma_map = sn_default_pci_map,
  73         .dma_map_consistent = sn_default_pci_map,
  74         .dma_unmap = sn_default_pci_unmap,
  75         .bus_fixup = sn_default_pci_bus_fixup,
  76 };
  77
  78 /*
  79  * Retrieve the DMA Flush List given nasid, widget, and device.
  80  * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
  81  */
  82 static inline u64
  83 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
  84                              u64 address)
  85 {
  86
  87         struct ia64_sal_retval ret_stuff;
  88         ret_stuff.status = 0;
  89         ret_stuff.v0 = 0;
  90
  91         SAL_CALL_NOLOCK(ret_stuff,
  92                         (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
  93                         (u64) nasid, (u64) widget_num,
  94                         (u64) device_num, (u64) address, 0, 0, 0);
  95         return ret_stuff.status;
  96
  97 }
  98
  99 /*
 100  * Retrieve the hub device info structure for the given nasid.
 101  */
 102 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
 103 {
 104
 105         struct ia64_sal_retval ret_stuff;
 106         ret_stuff.status = 0;
 107         ret_stuff.v0 = 0;
 108
 109         SAL_CALL_NOLOCK(ret_stuff,
 110                         (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
 111                         (u64) handle, (u64) address, 0, 0, 0, 0, 0);
 112         return ret_stuff.v0;
 113 }
 114
 115 /*
 116  * Retrieve the pci bus information given the bus number.
 117  */
 118 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 119 {
 120
 121         struct ia64_sal_retval ret_stuff;
 122         ret_stuff.status = 0;
 123         ret_stuff.v0 = 0;
 124
 125         SAL_CALL_NOLOCK(ret_stuff,
 126                         (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
 127                         (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
 128         return ret_stuff.v0;
 129 }
 130
 131 /*
 132  * Retrieve the pci device information given the bus and device|function number.
 133  */
 134 static inline u64
 135 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
 136                     u64 sn_irq_info)
 137 {
 138         struct ia64_sal_retval ret_stuff;
 139         ret_stuff.status = 0;
 140         ret_stuff.v0 = 0;
 141
 142         SAL_CALL_NOLOCK(ret_stuff,
 143                         (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
 144                         (u64) segment, (u64) bus_number, (u64) devfn,
 145                         (u64) pci_dev,
 146                         sn_irq_info, 0, 0);
 147         return ret_stuff.v0;
 148 }
 149
 150 /*
 151  * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
 152  *                        device.
 153  */
 154 inline struct pcidev_info *
 155 sn_pcidev_info_get(struct pci_dev *dev)
 156 {
 157         struct pcidev_info *pcidev;
 158
 159         list_for_each_entry(pcidev,
 160                             &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
 161                 if (pcidev->pdi_linux_pcidev == dev) {
 162                         return pcidev;
 163                 }
 164         }
 165         return NULL;
 166 }
 167
 168 /*
 169  * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
 170  *      each node in the system.
 171  */
 172 static void sn_fixup_ionodes(void)
 173 {
 174         struct sn_flush_device_kernel *sn_flush_device_kernel;
 175         struct sn_flush_device_kernel *dev_entry;
 176         struct hubdev_info *hubdev;
 177         u64 status;
 178         u64 nasid;
 179         int i, widget, device;
 180
 181         /*
 182          * Get SGI Specific HUB chipset information.
 183          * Inform Prom that this kernel can support domain bus numbering.
 184          */
 185         for (i = 0; i < num_cnodes; i++) {
 186                 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
 187                 nasid = cnodeid_to_nasid(i);
 188                 hubdev->max_segment_number = 0xffffffff;
 189                 hubdev->max_pcibus_number = 0xff;
 190                 status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
 191                 if (status)
 192                         continue;
 193
 194                 /* Save the largest Domain and pcibus numbers found. */
 195                 if (hubdev->max_segment_number) {
 196                         /*
 197                          * Dealing with a Prom that supports segments.
 198                          */
 199                         max_segment_number = hubdev->max_segment_number;
 200                         max_pcibus_number = hubdev->max_pcibus_number;
 201                 }
 202
 203                 /* Attach the error interrupt handlers */
 204                 if (nasid & 1)
 205                         ice_error_init(hubdev);
 206                 else
 207                         hub_error_init(hubdev);
 208
 209                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
 210                         hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
 211
 212                 if (!hubdev->hdi_flush_nasid_list.widget_p)
 213                         continue;
 214
 215                 hubdev->hdi_flush_nasid_list.widget_p =
 216                     kmalloc((HUB_WIDGET_ID_MAX + 1) *
 217                             sizeof(struct sn_flush_device_kernel *),
 218                             GFP_KERNEL);
 219                 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
 220                        (HUB_WIDGET_ID_MAX + 1) *
 221                        sizeof(struct sn_flush_device_kernel *));
 222
 223                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
 224                         sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
 225                                                          sizeof(struct
 226                                                         sn_flush_device_kernel),
 227                                                         GFP_KERNEL);
 228                         if (!sn_flush_device_kernel)
 229                                 BUG();
 230                         memset(sn_flush_device_kernel, 0x0,
 231                                DEV_PER_WIDGET *
 232                                sizeof(struct sn_flush_device_kernel));
 233
 234                         dev_entry = sn_flush_device_kernel;
 235                         for (device = 0; device < DEV_PER_WIDGET;
 236                              device++,dev_entry++) {
 237                                 dev_entry->common = kmalloc(sizeof(struct
 238                                                         sn_flush_device_common),
 239                                                             GFP_KERNEL);
 240                                 if (!dev_entry->common)
 241                                         BUG();
 242                                 memset(dev_entry->common, 0x0, sizeof(struct
 243                                                        sn_flush_device_common));
 244
 245                                 status = sal_get_device_dmaflush_list(nasid,
 246                                                                         widget,
 247                                                                         device,
 248                                                       (u64)(dev_entry->common));
 249                                 if (status)
 250                                         BUG();
 251
 252                                 spin_lock_init(&dev_entry->sfdl_flush_lock);
 253                         }
 254
 255                         if (sn_flush_device_kernel)
 256                                 hubdev->hdi_flush_nasid_list.widget_p[widget] =
 257                                                        sn_flush_device_kernel;
 258                 }
 259         }
 260 }
 261
 262 /*
 263  * sn_pci_window_fixup() - Create a pci_window for each device resource.
 264  *                         Until ACPI support is added, we need this code
 265  *                         to setup pci_windows for use by
 266  *                         pcibios_bus_to_resource(),
 267  *                         pcibios_resource_to_bus(), etc.
 268  */
 269 static void
 270 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
 271                     s64 * pci_addrs)
 272 {
 273         struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
 274         unsigned int i;
 275         unsigned int idx;
 276         unsigned int new_count;
 277         struct pci_window *new_window;
 278
 279         if (count == 0)
 280                 return;
 281         idx = controller->windows;
 282         new_count = controller->windows + count;
 283         new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
 284         if (new_window == NULL)
 285                 BUG();
 286         if (controller->window) {
 287                 memcpy(new_window, controller->window,
 288                        sizeof(struct pci_window) * controller->windows);
 289                 kfree(controller->window);
 290         }
 291
 292         /* Setup a pci_window for each device resource. */
 293         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
 294                 if (pci_addrs[i] == -1)
 295                         continue;
 296
 297                 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
 298                 new_window[idx].resource = dev->resource[i];
 299                 idx++;
 300         }
 301
 302         controller->windows = new_count;
 303         controller->window = new_window;
 304 }
 305
 306 void sn_pci_unfixup_slot(struct pci_dev *dev)
 307 {
 308         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
 309
 310         sn_irq_unfixup(dev);
 311         pci_dev_put(host_pci_dev);
 312         pci_dev_put(dev);
 313 }
 314
 315 /*
 316  * sn_pci_fixup_slot() - This routine sets up a slot's resources
 317  * consistent with the Linux PCI abstraction layer.  Resources acquired
 318  * from our PCI provider include PIO maps to BAR space and interrupt
 319  * objects.
 320  */
 321 void sn_pci_fixup_slot(struct pci_dev *dev)
 322 {
 323         unsigned int count = 0;
 324         int idx;
 325         int segment = pci_domain_nr(dev->bus);
 326         int status = 0;
 327         struct pcibus_bussoft *bs;
 328         struct pci_bus *host_pci_bus;
 329         struct pci_dev *host_pci_dev;
 330         struct pcidev_info *pcidev_info;
 331         s64 pci_addrs[PCI_ROM_RESOURCE + 1];
 332         struct sn_irq_info *sn_irq_info;
 333         unsigned long size;
 334         unsigned int bus_no, devfn;
 335
 336         pci_dev_get(dev); /* for the sysdata pointer */
 337         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
 338         if (pcidev_info <= 0)
 339                 BUG();          /* Cannot afford to run out of memory */
 340
 341         sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
 342         if (sn_irq_info <= 0)
 343                 BUG();          /* Cannot afford to run out of memory */
 344         memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
 345
 346         /* Call to retrieve pci device information needed by kernel. */
 347         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
 348                                      dev->devfn,
 349                                      (u64) __pa(pcidev_info),
 350                                      (u64) __pa(sn_irq_info));
 351         if (status)
 352                 BUG(); /* Cannot get platform pci device information */
 353
 354         /* Add pcidev_info to list in sn_pci_controller struct */
 355         list_add_tail(&pcidev_info->pdi_list,
 356                       &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
 357
 358         /* Copy over PIO Mapped Addresses */
 359         for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
 360                 unsigned long start, end, addr;
 361
 362                 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
 363                         pci_addrs[idx] = -1;
 364                         continue;
 365                 }
 366
 367                 start = dev->resource[idx].start;
 368                 end = dev->resource[idx].end;
 369                 size = end - start;
 370                 if (size == 0) {
 371                         pci_addrs[idx] = -1;
 372                         continue;
 373                 }
 374                 pci_addrs[idx] = start;
 375                 count++;
 376                 addr = pcidev_info->pdi_pio_mapped_addr[idx];
 377                 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
 378                 dev->resource[idx].start = addr;
 379                 dev->resource[idx].end = addr + size;
 380                 if (dev->resource[idx].flags & IORESOURCE_IO)
 381                         dev->resource[idx].parent = &ioport_resource;
 382                 else
 383                         dev->resource[idx].parent = &iomem_resource;
 384         }
 385         /* Create a pci_window in the pci_controller struct for
 386          * each device resource.
 387          */
 388         if (count > 0)
 389                 sn_pci_window_fixup(dev, count, pci_addrs);
 390
 391         /*
 392          * Using the PROMs values for the PCI host bus, get the Linux
 393          * PCI host_pci_dev struct and set up host bus linkages
 394          */
 395
 396         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
 397         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
 398         host_pci_bus = pci_find_bus(segment, bus_no);
 399         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
 400
 401         pcidev_info->host_pci_dev = host_pci_dev;
 402         pcidev_info->pdi_linux_pcidev = dev;
 403         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
 404         bs = SN_PCIBUS_BUSSOFT(dev->bus);
 405         pcidev_info->pdi_pcibus_info = bs;
 406
 407         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
 408                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
 409         } else {
 410                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
 411         }
 412
 413         /* Only set up IRQ stuff if this device has a host bus context */
 414         if (bs && sn_irq_info->irq_irq) {
 415                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
 416                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
 417                 sn_irq_fixup(dev, sn_irq_info);
 418         } else {
 419                 pcidev_info->pdi_sn_irq_info = NULL;
 420                 kfree(sn_irq_info);
 421         }
 422 }
 423
 424 /*
 425  * sn_pci_controller_fixup() - This routine sets up a bus's resources
 426  * consistent with the Linux PCI abstraction layer.
 427  */
 428 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 429 {
 430         int status = 0;
 431         int nasid, cnode;
 432         struct pci_controller *controller;
 433         struct sn_pci_controller *sn_controller;
 434         struct pcibus_bussoft *prom_bussoft_ptr;
 435         struct hubdev_info *hubdev_info;
 436         void *provider_soft = NULL;
 437         struct sn_pcibus_provider *provider;
 438
 439         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
 440                                      (u64) ia64_tpa(&prom_bussoft_ptr));
 441         if (status > 0)
 442                 return;         /*bus # does not exist */
 443         prom_bussoft_ptr = __va(prom_bussoft_ptr);
 444
 445         /* Allocate a sn_pci_controller, which has a pci_controller struct
 446          * as the first member.
 447          */
 448         sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
 449         if (!sn_controller)
 450                 BUG();
 451         INIT_LIST_HEAD(&sn_controller->pcidev_info);
 452         controller = &sn_controller->pci_controller;
 453         controller->segment = segment;
 454
 455         if (bus == NULL) {
 456                 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
 457                 if (bus == NULL)
 458                         goto error_return; /* error, or bus already scanned */
 459                 bus->sysdata = NULL;
 460         }
 461
 462         if (bus->sysdata)
 463                 goto error_return; /* sysdata already alloc'd */
 464
 465         /*
 466          * Per-provider fixup.  Copies the contents from prom to local
 467          * area and links SN_PCIBUS_BUSSOFT().
 468          */
 469
 470         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
 471                 goto error_return; /* unsupported asic type */
 472
 473         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
 474                 goto error_return; /* no further fixup necessary */
 475
 476         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
 477         if (provider == NULL)
 478                 goto error_return; /* no provider registerd for this asic */
 479
 480         bus->sysdata = controller;
 481         if (provider->bus_fixup)
 482                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
 483
 484         if (provider_soft == NULL) {
 485                 /* fixup failed or not applicable */
 486                 bus->sysdata = NULL;
 487                 goto error_return;
 488         }
 489
 490         /*
 491          * Setup pci_windows for legacy IO and MEM space.
 492          * (Temporary until ACPI support is in place.)
 493          */
 494         controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
 495         if (controller->window == NULL)
 496                 BUG();
 497         controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
 498         controller->window[0].resource.name = "legacy_io";
 499         controller->window[0].resource.flags = IORESOURCE_IO;
 500         controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
 501         controller->window[0].resource.end =
 502             controller->window[0].resource.start + 0xffff;
 503         controller->window[0].resource.parent = &ioport_resource;
 504         controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
 505         controller->window[1].resource.name = "legacy_mem";
 506         controller->window[1].resource.flags = IORESOURCE_MEM;
 507         controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
 508         controller->window[1].resource.end =
 509             controller->window[1].resource.start + (1024 * 1024) - 1;
 510         controller->window[1].resource.parent = &iomem_resource;
 511         controller->windows = 2;
 512
 513         /*
 514          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
 515          * after this point.
 516          */
 517
 518         PCI_CONTROLLER(bus)->platform_data = provider_soft;
 519         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
 520         cnode = nasid_to_cnodeid(nasid);
 521         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 522         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
 523             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 524
 525         /*
 526          * If the node information we obtained during the fixup phase is invalid
 527          * then set controller->node to -1 (undetermined)
 528          */
 529         if (controller->node >= num_online_nodes()) {
 530                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 531
 532                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 533                                     "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 534                         b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 535                         b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
 536                 printk(KERN_WARNING "on node %d but only %d nodes online."
 537                         "Association set to undetermined.\n",
 538                         controller->node, num_online_nodes());
 539                 controller->node = -1;
 540         }
 541         return;
 542
 543 error_return:
 544
 545         kfree(sn_controller);
 546         return;
 547 }
 548
 549 void sn_bus_store_sysdata(struct pci_dev *dev)
 550 {
 551         struct sysdata_el *element;
 552
 553         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
 554         if (!element) {
 555                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
 556                 return;
 557         }
 558         element->sysdata = SN_PCIDEV_INFO(dev);
 559         list_add(&element->entry, &sn_sysdata_list);
 560 }
 561
 562 void sn_bus_free_sysdata(void)
 563 {
 564         struct sysdata_el *element;
 565         struct list_head *list;
 566
 567 sn_sysdata_free_start:
 568         list_for_each(list, &sn_sysdata_list) {
 569                 element = list_entry(list, struct sysdata_el, entry);
 570                 list_del(&element->entry);
 571                 kfree(element->sysdata);
 572                 kfree(element);
 573                 goto sn_sysdata_free_start;
 574         }
 575         return;
 576 }
 577
 578 /*
 579  * Ugly hack to get PCI setup until we have a proper ACPI namespace.
 580  */
 581
 582 #define PCI_BUSES_TO_SCAN 256
 583
 584 static int __init sn_pci_init(void)
 585 {
 586         int i = 0;
 587         int j = 0;
 588         struct pci_dev *pci_dev = NULL;
 589         extern void sn_init_cpei_timer(void);
 590 #ifdef CONFIG_PROC_FS
 591         extern void register_sn_procfs(void);
 592 #endif
 593
 594         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 595                 return 0;
 596
 597         /*
 598          * prime sn_pci_provider[].  Individial provider init routines will
 599          * override their respective default entries.
 600          */
 601
 602         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
 603                 sn_pci_provider[i] = &sn_pci_default_provider;
 604
 605         pcibr_init_provider();
 606         tioca_init_provider();
 607         tioce_init_provider();
 608
 609         /*
 610          * This is needed to avoid bounce limit checks in the blk layer
 611          */
 612         ia64_max_iommu_merge_mask = ~PAGE_MASK;
 613         sn_fixup_ionodes();
 614         sn_irq_lh_init();
 615         INIT_LIST_HEAD(&sn_sysdata_list);
 616         sn_init_cpei_timer();
 617
 618 #ifdef CONFIG_PROC_FS
 619         register_sn_procfs();
 620 #endif
 621
 622         /* busses are not known yet ... */
 623         for (i = 0; i <= max_segment_number; i++)
 624                 for (j = 0; j <= max_pcibus_number; j++)
 625                         sn_pci_controller_fixup(i, j, NULL);
 626
 627         /*
 628          * Generic Linux PCI Layer has created the pci_bus and pci_dev
 629          * structures - time for us to add our SN PLatform specific
 630          * information.
 631          */
 632
 633         while ((pci_dev =
 634                 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
 635                 sn_pci_fixup_slot(pci_dev);
 636
 637         sn_ioif_inited = 1;     /* sn I/O infrastructure now initialized */
 638
 639         return 0;
 640 }
 641
 642 /*
 643  * hubdev_init_node() - Creates the HUB data structure and link them to it's
 644  *      own NODE specific data area.
 645  */
 646 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 647 {
 648
 649         struct hubdev_info *hubdev_info;
 650
 651         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
 652                 hubdev_info =
 653                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
 654                                                              sizeof(struct
 655                                                                     hubdev_info));
 656         else
 657                 hubdev_info =
 658                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
 659                                                              sizeof(struct
 660                                                                     hubdev_info));
 661         npda->pdinfo = (void *)hubdev_info;
 662
 663 }
 664
 665 geoid_t
 666 cnodeid_get_geoid(cnodeid_t cnode)
 667 {
 668
 669         struct hubdev_info *hubdev;
 670
 671         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 672         return hubdev->hdi_geoid;
 673
 674 }
 675
 676 subsys_initcall(sn_pci_init);
 677 EXPORT_SYMBOL(sn_pci_fixup_slot);
 678 EXPORT_SYMBOL(sn_pci_unfixup_slot);
 679 EXPORT_SYMBOL(sn_pci_controller_fixup);
 680 EXPORT_SYMBOL(sn_bus_store_sysdata);
 681 EXPORT_SYMBOL(sn_bus_free_sysdata);