git.oblomov.eu Git - linux-2.6/blob - 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.  This list is needed
  80  * to implement the WAR - Flush DMA data on PIO Reads.
  81  */
  82 static inline uint64_t
  83 sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
  84 {
  85
  86         struct ia64_sal_retval ret_stuff;
  87         ret_stuff.status = 0;
  88         ret_stuff.v0 = 0;
  89
  90         SAL_CALL_NOLOCK(ret_stuff,
  91                         (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
  92                         (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
  93                         0);
  94         return ret_stuff.v0;
  95
  96 }
  97
  98 /*
  99  * Retrieve the hub device info structure for the given nasid.
 100  */
 101 static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
 102 {
 103
 104         struct ia64_sal_retval ret_stuff;
 105         ret_stuff.status = 0;
 106         ret_stuff.v0 = 0;
 107
 108         SAL_CALL_NOLOCK(ret_stuff,
 109                         (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
 110                         (u64) handle, (u64) address, 0, 0, 0, 0, 0);
 111         return ret_stuff.v0;
 112 }
 113
 114 /*
 115  * Retrieve the pci bus information given the bus number.
 116  */
 117 static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 118 {
 119
 120         struct ia64_sal_retval ret_stuff;
 121         ret_stuff.status = 0;
 122         ret_stuff.v0 = 0;
 123
 124         SAL_CALL_NOLOCK(ret_stuff,
 125                         (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
 126                         (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
 127         return ret_stuff.v0;
 128 }
 129
 130 /*
 131  * Retrieve the pci device information given the bus and device|function number.
 132  */
 133 static inline uint64_t
 134 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
 135                         u64 sn_irq_info)
 136 {
 137         struct ia64_sal_retval ret_stuff;
 138         ret_stuff.status = 0;
 139         ret_stuff.v0 = 0;
 140
 141         SAL_CALL_NOLOCK(ret_stuff,
 142                         (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
 143                         (u64) segment, (u64) bus_number, (u64) devfn,
 144                         (u64) pci_dev,
 145                         sn_irq_info, 0, 0);
 146         return ret_stuff.v0;
 147 }
 148
 149 /*
 150  * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
 151  *                        device.
 152  */
 153 inline struct pcidev_info *
 154 sn_pcidev_info_get(struct pci_dev *dev)
 155 {
 156         struct pcidev_info *pcidev;
 157
 158         list_for_each_entry(pcidev,
 159                             &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
 160                 if (pcidev->pdi_linux_pcidev == dev) {
 161                         return pcidev;
 162                 }
 163         }
 164         return NULL;
 165 }
 166
 167 /*
 168  * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
 169  *      each node in the system.
 170  */
 171 static void sn_fixup_ionodes(void)
 172 {
 173
 174         struct sn_flush_device_list *sn_flush_device_list;
 175         struct hubdev_info *hubdev;
 176         uint64_t status;
 177         uint64_t nasid;
 178         int i, widget;
 179
 180         /*
 181          * Get SGI Specific HUB chipset information.
 182          * Inform Prom that this kernel can support domain bus numbering.
 183          */
 184         for (i = 0; i < num_cnodes; i++) {
 185                 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
 186                 nasid = cnodeid_to_nasid(i);
 187                 hubdev->max_segment_number = 0xffffffff;
 188                 hubdev->max_pcibus_number = 0xff;
 189                 status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
 190                 if (status)
 191                         continue;
 192
 193                 /* Save the largest Domain and pcibus numbers found. */
 194                 if (hubdev->max_segment_number) {
 195                         /*
 196                          * Dealing with a Prom that supports segments.
 197                          */
 198                         max_segment_number = hubdev->max_segment_number;
 199                         max_pcibus_number = hubdev->max_pcibus_number;
 200                 }
 201
 202                 /* Attach the error interrupt handlers */
 203                 if (nasid & 1)
 204                         ice_error_init(hubdev);
 205                 else
 206                         hub_error_init(hubdev);
 207
 208                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
 209                         hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
 210
 211                 if (!hubdev->hdi_flush_nasid_list.widget_p)
 212                         continue;
 213
 214                 hubdev->hdi_flush_nasid_list.widget_p =
 215                     kmalloc((HUB_WIDGET_ID_MAX + 1) *
 216                             sizeof(struct sn_flush_device_list *), GFP_KERNEL);
 217
 218                 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
 219                        (HUB_WIDGET_ID_MAX + 1) *
 220                        sizeof(struct sn_flush_device_list *));
 221
 222                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
 223                         sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
 224                                                        sizeof(struct
 225                                                               sn_flush_device_list),
 226                                                        GFP_KERNEL);
 227                         memset(sn_flush_device_list, 0x0,
 228                                DEV_PER_WIDGET *
 229                                sizeof(struct sn_flush_device_list));
 230
 231                         status =
 232                             sal_get_widget_dmaflush_list(nasid, widget,
 233                                                          (uint64_t)
 234                                                          __pa
 235                                                          (sn_flush_device_list));
 236                         if (status) {
 237                                 kfree(sn_flush_device_list);
 238                                 continue;
 239                         }
 240
 241                         spin_lock_init(&sn_flush_device_list->sfdl_flush_lock);
 242                         hubdev->hdi_flush_nasid_list.widget_p[widget] =
 243                             sn_flush_device_list;
 244                 }
 245
 246         }
 247
 248 }
 249
 250 /*
 251  * sn_pci_window_fixup() - Create a pci_window for each device resource.
 252  *                         Until ACPI support is added, we need this code
 253  *                         to setup pci_windows for use by
 254  *                         pcibios_bus_to_resource(),
 255  *                         pcibios_resource_to_bus(), etc.
 256  */
 257 static void
 258 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
 259                     int64_t * pci_addrs)
 260 {
 261         struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
 262         unsigned int i;
 263         unsigned int idx;
 264         unsigned int new_count;
 265         struct pci_window *new_window;
 266
 267         if (count == 0)
 268                 return;
 269         idx = controller->windows;
 270         new_count = controller->windows + count;
 271         new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
 272         if (new_window == NULL)
 273                 BUG();
 274         if (controller->window) {
 275                 memcpy(new_window, controller->window,
 276                        sizeof(struct pci_window) * controller->windows);
 277                 kfree(controller->window);
 278         }
 279
 280         /* Setup a pci_window for each device resource. */
 281         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
 282                 if (pci_addrs[i] == -1)
 283                         continue;
 284
 285                 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
 286                 new_window[idx].resource = dev->resource[i];
 287                 idx++;
 288         }
 289
 290         controller->windows = new_count;
 291         controller->window = new_window;
 292 }
 293
 294 void sn_pci_unfixup_slot(struct pci_dev *dev)
 295 {
 296         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
 297
 298         sn_irq_unfixup(dev);
 299         pci_dev_put(host_pci_dev);
 300         pci_dev_put(dev);
 301 }
 302
 303 /*
 304  * sn_pci_fixup_slot() - This routine sets up a slot's resources
 305  * consistent with the Linux PCI abstraction layer.  Resources acquired
 306  * from our PCI provider include PIO maps to BAR space and interrupt
 307  * objects.
 308  */
 309 void sn_pci_fixup_slot(struct pci_dev *dev)
 310 {
 311         unsigned int count = 0;
 312         int idx;
 313         int segment = pci_domain_nr(dev->bus);
 314         int status = 0;
 315         struct pcibus_bussoft *bs;
 316         struct pci_bus *host_pci_bus;
 317         struct pci_dev *host_pci_dev;
 318         struct pcidev_info *pcidev_info;
 319         int64_t pci_addrs[PCI_ROM_RESOURCE + 1];
 320         struct sn_irq_info *sn_irq_info;
 321         unsigned long size;
 322         unsigned int bus_no, devfn;
 323
 324         pci_dev_get(dev); /* for the sysdata pointer */
 325         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
 326         if (pcidev_info <= 0)
 327                 BUG();          /* Cannot afford to run out of memory */
 328
 329         sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
 330         if (sn_irq_info <= 0)
 331                 BUG();          /* Cannot afford to run out of memory */
 332         memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
 333
 334         /* Call to retrieve pci device information needed by kernel. */
 335         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
 336                                      dev->devfn,
 337                                      (u64) __pa(pcidev_info),
 338                                      (u64) __pa(sn_irq_info));
 339         if (status)
 340                 BUG(); /* Cannot get platform pci device information */
 341
 342         /* Add pcidev_info to list in sn_pci_controller struct */
 343         list_add_tail(&pcidev_info->pdi_list,
 344                       &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
 345
 346         /* Copy over PIO Mapped Addresses */
 347         for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
 348                 unsigned long start, end, addr;
 349
 350                 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
 351                         pci_addrs[idx] = -1;
 352                         continue;
 353                 }
 354
 355                 start = dev->resource[idx].start;
 356                 end = dev->resource[idx].end;
 357                 size = end - start;
 358                 if (size == 0) {
 359                         pci_addrs[idx] = -1;
 360                         continue;
 361                 }
 362                 pci_addrs[idx] = start;
 363                 count++;
 364                 addr = pcidev_info->pdi_pio_mapped_addr[idx];
 365                 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
 366                 dev->resource[idx].start = addr;
 367                 dev->resource[idx].end = addr + size;
 368                 if (dev->resource[idx].flags & IORESOURCE_IO)
 369                         dev->resource[idx].parent = &ioport_resource;
 370                 else
 371                         dev->resource[idx].parent = &iomem_resource;
 372         }
 373         /* Create a pci_window in the pci_controller struct for
 374          * each device resource.
 375          */
 376         if (count > 0)
 377                 sn_pci_window_fixup(dev, count, pci_addrs);
 378
 379         /*
 380          * Using the PROMs values for the PCI host bus, get the Linux
 381          * PCI host_pci_dev struct and set up host bus linkages
 382          */
 383
 384         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
 385         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
 386         host_pci_bus = pci_find_bus(segment, bus_no);
 387         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
 388
 389         pcidev_info->host_pci_dev = host_pci_dev;
 390         pcidev_info->pdi_linux_pcidev = dev;
 391         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
 392         bs = SN_PCIBUS_BUSSOFT(dev->bus);
 393         pcidev_info->pdi_pcibus_info = bs;
 394
 395         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
 396                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
 397         } else {
 398                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
 399         }
 400
 401         /* Only set up IRQ stuff if this device has a host bus context */
 402         if (bs && sn_irq_info->irq_irq) {
 403                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
 404                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
 405                 sn_irq_fixup(dev, sn_irq_info);
 406         } else {
 407                 pcidev_info->pdi_sn_irq_info = NULL;
 408                 kfree(sn_irq_info);
 409         }
 410 }
 411
 412 /*
 413  * sn_pci_controller_fixup() - This routine sets up a bus's resources
 414  * consistent with the Linux PCI abstraction layer.
 415  */
 416 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 417 {
 418         int status = 0;
 419         int nasid, cnode;
 420         struct pci_controller *controller;
 421         struct sn_pci_controller *sn_controller;
 422         struct pcibus_bussoft *prom_bussoft_ptr;
 423         struct hubdev_info *hubdev_info;
 424         void *provider_soft = NULL;
 425         struct sn_pcibus_provider *provider;
 426
 427         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
 428                                      (u64) ia64_tpa(&prom_bussoft_ptr));
 429         if (status > 0)
 430                 return;         /*bus # does not exist */
 431         prom_bussoft_ptr = __va(prom_bussoft_ptr);
 432
 433         /* Allocate a sn_pci_controller, which has a pci_controller struct
 434          * as the first member.
 435          */
 436         sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
 437         if (!sn_controller)
 438                 BUG();
 439         INIT_LIST_HEAD(&sn_controller->pcidev_info);
 440         controller = &sn_controller->pci_controller;
 441         controller->segment = segment;
 442
 443         if (bus == NULL) {
 444                 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
 445                 if (bus == NULL)
 446                         goto error_return; /* error, or bus already scanned */
 447                 bus->sysdata = NULL;
 448         }
 449
 450         if (bus->sysdata)
 451                 goto error_return; /* sysdata already alloc'd */
 452
 453         /*
 454          * Per-provider fixup.  Copies the contents from prom to local
 455          * area and links SN_PCIBUS_BUSSOFT().
 456          */
 457
 458         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
 459                 goto error_return; /* unsupported asic type */
 460
 461         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
 462                 goto error_return; /* no further fixup necessary */
 463
 464         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
 465         if (provider == NULL)
 466                 goto error_return; /* no provider registerd for this asic */
 467
 468         bus->sysdata = controller;
 469         if (provider->bus_fixup)
 470                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
 471
 472         if (provider_soft == NULL) {
 473                 /* fixup failed or not applicable */
 474                 bus->sysdata = NULL;
 475                 goto error_return;
 476         }
 477
 478         /*
 479          * Setup pci_windows for legacy IO and MEM space.
 480          * (Temporary until ACPI support is in place.)
 481          */
 482         controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
 483         if (controller->window == NULL)
 484                 BUG();
 485         controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
 486         controller->window[0].resource.name = "legacy_io";
 487         controller->window[0].resource.flags = IORESOURCE_IO;
 488         controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
 489         controller->window[0].resource.end =
 490             controller->window[0].resource.start + 0xffff;
 491         controller->window[0].resource.parent = &ioport_resource;
 492         controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
 493         controller->window[1].resource.name = "legacy_mem";
 494         controller->window[1].resource.flags = IORESOURCE_MEM;
 495         controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
 496         controller->window[1].resource.end =
 497             controller->window[1].resource.start + (1024 * 1024) - 1;
 498         controller->window[1].resource.parent = &iomem_resource;
 499         controller->windows = 2;
 500
 501         /*
 502          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
 503          * after this point.
 504          */
 505
 506         PCI_CONTROLLER(bus)->platform_data = provider_soft;
 507         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
 508         cnode = nasid_to_cnodeid(nasid);
 509         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 510         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
 511             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 512
 513         /*
 514          * If the node information we obtained during the fixup phase is invalid
 515          * then set controller->node to -1 (undetermined)
 516          */
 517         if (controller->node >= num_online_nodes()) {
 518                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 519
 520                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 521                                     "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 522                         b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 523                         b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
 524                 printk(KERN_WARNING "on node %d but only %d nodes online."
 525                         "Association set to undetermined.\n",
 526                         controller->node, num_online_nodes());
 527                 controller->node = -1;
 528         }
 529         return;
 530
 531 error_return:
 532
 533         kfree(sn_controller);
 534         return;
 535 }
 536
 537 void sn_bus_store_sysdata(struct pci_dev *dev)
 538 {
 539         struct sysdata_el *element;
 540
 541         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
 542         if (!element) {
 543                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
 544                 return;
 545         }
 546         element->sysdata = SN_PCIDEV_INFO(dev);
 547         list_add(&element->entry, &sn_sysdata_list);
 548 }
 549
 550 void sn_bus_free_sysdata(void)
 551 {
 552         struct sysdata_el *element;
 553         struct list_head *list;
 554
 555 sn_sysdata_free_start:
 556         list_for_each(list, &sn_sysdata_list) {
 557                 element = list_entry(list, struct sysdata_el, entry);
 558                 list_del(&element->entry);
 559                 kfree(element->sysdata);
 560                 kfree(element);
 561                 goto sn_sysdata_free_start;
 562         }
 563         return;
 564 }
 565
 566 /*
 567  * Ugly hack to get PCI setup until we have a proper ACPI namespace.
 568  */
 569
 570 #define PCI_BUSES_TO_SCAN 256
 571
 572 static int __init sn_pci_init(void)
 573 {
 574         int i = 0;
 575         int j = 0;
 576         struct pci_dev *pci_dev = NULL;
 577         extern void sn_init_cpei_timer(void);
 578 #ifdef CONFIG_PROC_FS
 579         extern void register_sn_procfs(void);
 580 #endif
 581
 582         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 583                 return 0;
 584
 585         /*
 586          * prime sn_pci_provider[].  Individial provider init routines will
 587          * override their respective default entries.
 588          */
 589
 590         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
 591                 sn_pci_provider[i] = &sn_pci_default_provider;
 592
 593         pcibr_init_provider();
 594         tioca_init_provider();
 595         tioce_init_provider();
 596
 597         /*
 598          * This is needed to avoid bounce limit checks in the blk layer
 599          */
 600         ia64_max_iommu_merge_mask = ~PAGE_MASK;
 601         sn_fixup_ionodes();
 602         sn_irq_lh_init();
 603         INIT_LIST_HEAD(&sn_sysdata_list);
 604         sn_init_cpei_timer();
 605
 606 #ifdef CONFIG_PROC_FS
 607         register_sn_procfs();
 608 #endif
 609
 610         /* busses are not known yet ... */
 611         for (i = 0; i <= max_segment_number; i++)
 612                 for (j = 0; j <= max_pcibus_number; j++)
 613                         sn_pci_controller_fixup(i, j, NULL);
 614
 615         /*
 616          * Generic Linux PCI Layer has created the pci_bus and pci_dev
 617          * structures - time for us to add our SN PLatform specific
 618          * information.
 619          */
 620
 621         while ((pci_dev =
 622                 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
 623                 sn_pci_fixup_slot(pci_dev);
 624
 625         sn_ioif_inited = 1;     /* sn I/O infrastructure now initialized */
 626
 627         return 0;
 628 }
 629
 630 /*
 631  * hubdev_init_node() - Creates the HUB data structure and link them to it's
 632  *      own NODE specific data area.
 633  */
 634 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 635 {
 636
 637         struct hubdev_info *hubdev_info;
 638
 639         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
 640                 hubdev_info =
 641                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
 642                                                              sizeof(struct
 643                                                                     hubdev_info));
 644         else
 645                 hubdev_info =
 646                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
 647                                                              sizeof(struct
 648                                                                     hubdev_info));
 649         npda->pdinfo = (void *)hubdev_info;
 650
 651 }
 652
 653 geoid_t
 654 cnodeid_get_geoid(cnodeid_t cnode)
 655 {
 656
 657         struct hubdev_info *hubdev;
 658
 659         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 660         return hubdev->hdi_geoid;
 661
 662 }
 663
 664 subsys_initcall(sn_pci_init);
 665 EXPORT_SYMBOL(sn_pci_fixup_slot);
 666 EXPORT_SYMBOL(sn_pci_unfixup_slot);
 667 EXPORT_SYMBOL(sn_pci_controller_fixup);
 668 EXPORT_SYMBOL(sn_bus_store_sysdata);
 669 EXPORT_SYMBOL(sn_bus_free_sysdata);