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/sn_feature_sets.h>
  14 #include <asm/sn/geo.h>
  15 #include <asm/sn/io.h>
  16 #include <asm/sn/pcibr_provider.h>
  17 #include <asm/sn/pcibus_provider_defs.h>
  18 #include <asm/sn/pcidev.h>
  19 #include <asm/sn/simulator.h>
  20 #include <asm/sn/sn_sal.h>
  21 #include <asm/sn/tioca_provider.h>
  22 #include <asm/sn/tioce_provider.h>
  23 #include "xtalk/hubdev.h"
  24 #include "xtalk/xwidgetdev.h"
  25
  26 static struct list_head sn_sysdata_list;
  27
  28 /* sysdata list struct */
  29 struct sysdata_el {
  30         struct list_head entry;
  31         void *sysdata;
  32 };
  33
  34 struct slab_info {
  35         struct hubdev_info hubdev;
  36 };
  37
  38 struct brick {
  39         moduleid_t id;          /* Module ID of this module        */
  40         struct slab_info slab_info[MAX_SLABS + 1];
  41 };
  42
  43 int sn_ioif_inited = 0;         /* SN I/O infrastructure initialized? */
  44
  45 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
  46
  47 static int max_segment_number = 0; /* Default highest segment number */
  48 static int max_pcibus_number = 255; /* Default highest pci bus number */
  49
  50 /*
  51  * Hooks and struct for unsupported pci providers
  52  */
  53
  54 static dma_addr_t
  55 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
  56 {
  57         return 0;
  58 }
  59
  60 static void
  61 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
  62 {
  63         return;
  64 }
  65
  66 static void *
  67 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
  68 {
  69         return NULL;
  70 }
  71
  72 static struct sn_pcibus_provider sn_pci_default_provider = {
  73         .dma_map = sn_default_pci_map,
  74         .dma_map_consistent = sn_default_pci_map,
  75         .dma_unmap = sn_default_pci_unmap,
  76         .bus_fixup = sn_default_pci_bus_fixup,
  77 };
  78
  79 /*
  80  * Retrieve the DMA Flush List given nasid, widget, and device.
  81  * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
  82  */
  83 static inline u64
  84 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
  85                              u64 address)
  86 {
  87
  88         struct ia64_sal_retval ret_stuff;
  89         ret_stuff.status = 0;
  90         ret_stuff.v0 = 0;
  91
  92         SAL_CALL_NOLOCK(ret_stuff,
  93                         (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
  94                         (u64) nasid, (u64) widget_num,
  95                         (u64) device_num, (u64) address, 0, 0, 0);
  96         return ret_stuff.status;
  97
  98 }
  99
 100 /*
 101  * Retrieve the hub device info structure for the given nasid.
 102  */
 103 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
 104 {
 105
 106         struct ia64_sal_retval ret_stuff;
 107         ret_stuff.status = 0;
 108         ret_stuff.v0 = 0;
 109
 110         SAL_CALL_NOLOCK(ret_stuff,
 111                         (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
 112                         (u64) handle, (u64) address, 0, 0, 0, 0, 0);
 113         return ret_stuff.v0;
 114 }
 115
 116 /*
 117  * Retrieve the pci bus information given the bus number.
 118  */
 119 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 120 {
 121
 122         struct ia64_sal_retval ret_stuff;
 123         ret_stuff.status = 0;
 124         ret_stuff.v0 = 0;
 125
 126         SAL_CALL_NOLOCK(ret_stuff,
 127                         (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
 128                         (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
 129         return ret_stuff.v0;
 130 }
 131
 132 /*
 133  * Retrieve the pci device information given the bus and device|function number.
 134  */
 135 static inline u64
 136 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
 137                     u64 sn_irq_info)
 138 {
 139         struct ia64_sal_retval ret_stuff;
 140         ret_stuff.status = 0;
 141         ret_stuff.v0 = 0;
 142
 143         SAL_CALL_NOLOCK(ret_stuff,
 144                         (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
 145                         (u64) segment, (u64) bus_number, (u64) devfn,
 146                         (u64) pci_dev,
 147                         sn_irq_info, 0, 0);
 148         return ret_stuff.v0;
 149 }
 150
 151 /*
 152  * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
 153  *                        device.
 154  */
 155 inline struct pcidev_info *
 156 sn_pcidev_info_get(struct pci_dev *dev)
 157 {
 158         struct pcidev_info *pcidev;
 159
 160         list_for_each_entry(pcidev,
 161                             &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
 162                 if (pcidev->pdi_linux_pcidev == dev) {
 163                         return pcidev;
 164                 }
 165         }
 166         return NULL;
 167 }
 168
 169 /* Older PROM flush WAR
 170  *
 171  * 01/16/06 -- This war will be in place until a new official PROM is released.
 172  * Additionally note that the struct sn_flush_device_war also has to be
 173  * removed from arch/ia64/sn/include/xtalk/hubdev.h
 174  */
 175 static u8 war_implemented = 0;
 176
 177 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
 178                                struct sn_flush_device_common *common)
 179 {
 180         struct sn_flush_device_war *war_list;
 181         struct sn_flush_device_war *dev_entry;
 182         struct ia64_sal_retval isrv = {0,0,0,0};
 183
 184         if (!war_implemented) {
 185                 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
 186                        "PROM flush WAR\n");
 187                 war_implemented = 1;
 188         }
 189
 190         war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
 191         if (!war_list)
 192                 BUG();
 193
 194         SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
 195                         nasid, widget, __pa(war_list), 0, 0, 0 ,0);
 196         if (isrv.status)
 197                 panic("sn_device_fixup_war failed: %s\n",
 198                       ia64_sal_strerror(isrv.status));
 199
 200         dev_entry = war_list + device;
 201         memcpy(common,dev_entry, sizeof(*common));
 202         kfree(war_list);
 203
 204         return isrv.status;
 205 }
 206
 207 /*
 208  * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
 209  *      each node in the system.
 210  */
 211 static void sn_fixup_ionodes(void)
 212 {
 213         struct sn_flush_device_kernel *sn_flush_device_kernel;
 214         struct sn_flush_device_kernel *dev_entry;
 215         struct hubdev_info *hubdev;
 216         u64 status;
 217         u64 nasid;
 218         int i, widget, device;
 219
 220         /*
 221          * Get SGI Specific HUB chipset information.
 222          * Inform Prom that this kernel can support domain bus numbering.
 223          */
 224         for (i = 0; i < num_cnodes; i++) {
 225                 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
 226                 nasid = cnodeid_to_nasid(i);
 227                 hubdev->max_segment_number = 0xffffffff;
 228                 hubdev->max_pcibus_number = 0xff;
 229                 status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
 230                 if (status)
 231                         continue;
 232
 233                 /* Save the largest Domain and pcibus numbers found. */
 234                 if (hubdev->max_segment_number) {
 235                         /*
 236                          * Dealing with a Prom that supports segments.
 237                          */
 238                         max_segment_number = hubdev->max_segment_number;
 239                         max_pcibus_number = hubdev->max_pcibus_number;
 240                 }
 241
 242                 /* Attach the error interrupt handlers */
 243                 if (nasid & 1)
 244                         ice_error_init(hubdev);
 245                 else
 246                         hub_error_init(hubdev);
 247
 248                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
 249                         hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
 250
 251                 if (!hubdev->hdi_flush_nasid_list.widget_p)
 252                         continue;
 253
 254                 hubdev->hdi_flush_nasid_list.widget_p =
 255                     kmalloc((HUB_WIDGET_ID_MAX + 1) *
 256                             sizeof(struct sn_flush_device_kernel *),
 257                             GFP_KERNEL);
 258                 memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
 259                        (HUB_WIDGET_ID_MAX + 1) *
 260                        sizeof(struct sn_flush_device_kernel *));
 261
 262                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
 263                         sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
 264                                                          sizeof(struct
 265                                                         sn_flush_device_kernel),
 266                                                         GFP_KERNEL);
 267                         if (!sn_flush_device_kernel)
 268                                 BUG();
 269                         memset(sn_flush_device_kernel, 0x0,
 270                                DEV_PER_WIDGET *
 271                                sizeof(struct sn_flush_device_kernel));
 272
 273                         dev_entry = sn_flush_device_kernel;
 274                         for (device = 0; device < DEV_PER_WIDGET;
 275                              device++,dev_entry++) {
 276                                 dev_entry->common = kmalloc(sizeof(struct
 277                                                         sn_flush_device_common),
 278                                                             GFP_KERNEL);
 279                                 if (!dev_entry->common)
 280                                         BUG();
 281                                 memset(dev_entry->common, 0x0, sizeof(struct
 282                                                        sn_flush_device_common));
 283
 284                                 if (sn_prom_feature_available(
 285                                                        PRF_DEVICE_FLUSH_LIST))
 286                                         status = sal_get_device_dmaflush_list(
 287                                                                           nasid,
 288                                                                          widget,
 289                                                                          device,
 290                                                       (u64)(dev_entry->common));
 291                                 else
 292                                         status = sn_device_fixup_war(nasid,
 293                                                                      widget,
 294                                                                      device,
 295                                                              dev_entry->common);
 296                                 if (status != SALRET_OK)
 297                                         panic("SAL call failed: %s\n",
 298                                               ia64_sal_strerror(status));
 299
 300                                 spin_lock_init(&dev_entry->sfdl_flush_lock);
 301                         }
 302
 303                         if (sn_flush_device_kernel)
 304                                 hubdev->hdi_flush_nasid_list.widget_p[widget] =
 305                                                        sn_flush_device_kernel;
 306                 }
 307         }
 308 }
 309
 310 /*
 311  * sn_pci_window_fixup() - Create a pci_window for each device resource.
 312  *                         Until ACPI support is added, we need this code
 313  *                         to setup pci_windows for use by
 314  *                         pcibios_bus_to_resource(),
 315  *                         pcibios_resource_to_bus(), etc.
 316  */
 317 static void
 318 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
 319                     s64 * pci_addrs)
 320 {
 321         struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
 322         unsigned int i;
 323         unsigned int idx;
 324         unsigned int new_count;
 325         struct pci_window *new_window;
 326
 327         if (count == 0)
 328                 return;
 329         idx = controller->windows;
 330         new_count = controller->windows + count;
 331         new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
 332         if (new_window == NULL)
 333                 BUG();
 334         if (controller->window) {
 335                 memcpy(new_window, controller->window,
 336                        sizeof(struct pci_window) * controller->windows);
 337                 kfree(controller->window);
 338         }
 339
 340         /* Setup a pci_window for each device resource. */
 341         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
 342                 if (pci_addrs[i] == -1)
 343                         continue;
 344
 345                 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
 346                 new_window[idx].resource = dev->resource[i];
 347                 idx++;
 348         }
 349
 350         controller->windows = new_count;
 351         controller->window = new_window;
 352 }
 353
 354 void sn_pci_unfixup_slot(struct pci_dev *dev)
 355 {
 356         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
 357
 358         sn_irq_unfixup(dev);
 359         pci_dev_put(host_pci_dev);
 360         pci_dev_put(dev);
 361 }
 362
 363 /*
 364  * sn_pci_fixup_slot() - This routine sets up a slot's resources
 365  * consistent with the Linux PCI abstraction layer.  Resources acquired
 366  * from our PCI provider include PIO maps to BAR space and interrupt
 367  * objects.
 368  */
 369 void sn_pci_fixup_slot(struct pci_dev *dev)
 370 {
 371         unsigned int count = 0;
 372         int idx;
 373         int segment = pci_domain_nr(dev->bus);
 374         int status = 0;
 375         struct pcibus_bussoft *bs;
 376         struct pci_bus *host_pci_bus;
 377         struct pci_dev *host_pci_dev;
 378         struct pcidev_info *pcidev_info;
 379         s64 pci_addrs[PCI_ROM_RESOURCE + 1];
 380         struct sn_irq_info *sn_irq_info;
 381         unsigned long size;
 382         unsigned int bus_no, devfn;
 383
 384         pci_dev_get(dev); /* for the sysdata pointer */
 385         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
 386         if (pcidev_info <= 0)
 387                 BUG();          /* Cannot afford to run out of memory */
 388
 389         sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
 390         if (sn_irq_info <= 0)
 391                 BUG();          /* Cannot afford to run out of memory */
 392         memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
 393
 394         /* Call to retrieve pci device information needed by kernel. */
 395         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
 396                                      dev->devfn,
 397                                      (u64) __pa(pcidev_info),
 398                                      (u64) __pa(sn_irq_info));
 399         if (status)
 400                 BUG(); /* Cannot get platform pci device information */
 401
 402         /* Add pcidev_info to list in sn_pci_controller struct */
 403         list_add_tail(&pcidev_info->pdi_list,
 404                       &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
 405
 406         /* Copy over PIO Mapped Addresses */
 407         for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
 408                 unsigned long start, end, addr;
 409
 410                 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
 411                         pci_addrs[idx] = -1;
 412                         continue;
 413                 }
 414
 415                 start = dev->resource[idx].start;
 416                 end = dev->resource[idx].end;
 417                 size = end - start;
 418                 if (size == 0) {
 419                         pci_addrs[idx] = -1;
 420                         continue;
 421                 }
 422                 pci_addrs[idx] = start;
 423                 count++;
 424                 addr = pcidev_info->pdi_pio_mapped_addr[idx];
 425                 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
 426                 dev->resource[idx].start = addr;
 427                 dev->resource[idx].end = addr + size;
 428                 if (dev->resource[idx].flags & IORESOURCE_IO)
 429                         dev->resource[idx].parent = &ioport_resource;
 430                 else
 431                         dev->resource[idx].parent = &iomem_resource;
 432         }
 433         /* Create a pci_window in the pci_controller struct for
 434          * each device resource.
 435          */
 436         if (count > 0)
 437                 sn_pci_window_fixup(dev, count, pci_addrs);
 438
 439         /*
 440          * Using the PROMs values for the PCI host bus, get the Linux
 441          * PCI host_pci_dev struct and set up host bus linkages
 442          */
 443
 444         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
 445         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
 446         host_pci_bus = pci_find_bus(segment, bus_no);
 447         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
 448
 449         pcidev_info->host_pci_dev = host_pci_dev;
 450         pcidev_info->pdi_linux_pcidev = dev;
 451         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
 452         bs = SN_PCIBUS_BUSSOFT(dev->bus);
 453         pcidev_info->pdi_pcibus_info = bs;
 454
 455         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
 456                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
 457         } else {
 458                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
 459         }
 460
 461         /* Only set up IRQ stuff if this device has a host bus context */
 462         if (bs && sn_irq_info->irq_irq) {
 463                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
 464                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
 465                 sn_irq_fixup(dev, sn_irq_info);
 466         } else {
 467                 pcidev_info->pdi_sn_irq_info = NULL;
 468                 kfree(sn_irq_info);
 469         }
 470 }
 471
 472 /*
 473  * sn_pci_controller_fixup() - This routine sets up a bus's resources
 474  * consistent with the Linux PCI abstraction layer.
 475  */
 476 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 477 {
 478         int status = 0;
 479         int nasid, cnode;
 480         struct pci_controller *controller;
 481         struct sn_pci_controller *sn_controller;
 482         struct pcibus_bussoft *prom_bussoft_ptr;
 483         struct hubdev_info *hubdev_info;
 484         void *provider_soft = NULL;
 485         struct sn_pcibus_provider *provider;
 486
 487         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
 488                                      (u64) ia64_tpa(&prom_bussoft_ptr));
 489         if (status > 0)
 490                 return;         /*bus # does not exist */
 491         prom_bussoft_ptr = __va(prom_bussoft_ptr);
 492
 493         /* Allocate a sn_pci_controller, which has a pci_controller struct
 494          * as the first member.
 495          */
 496         sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
 497         if (!sn_controller)
 498                 BUG();
 499         INIT_LIST_HEAD(&sn_controller->pcidev_info);
 500         controller = &sn_controller->pci_controller;
 501         controller->segment = segment;
 502
 503         if (bus == NULL) {
 504                 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
 505                 if (bus == NULL)
 506                         goto error_return; /* error, or bus already scanned */
 507                 bus->sysdata = NULL;
 508         }
 509
 510         if (bus->sysdata)
 511                 goto error_return; /* sysdata already alloc'd */
 512
 513         /*
 514          * Per-provider fixup.  Copies the contents from prom to local
 515          * area and links SN_PCIBUS_BUSSOFT().
 516          */
 517
 518         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
 519                 goto error_return; /* unsupported asic type */
 520
 521         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
 522                 goto error_return; /* no further fixup necessary */
 523
 524         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
 525         if (provider == NULL)
 526                 goto error_return; /* no provider registerd for this asic */
 527
 528         bus->sysdata = controller;
 529         if (provider->bus_fixup)
 530                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
 531
 532         if (provider_soft == NULL) {
 533                 /* fixup failed or not applicable */
 534                 bus->sysdata = NULL;
 535                 goto error_return;
 536         }
 537
 538         /*
 539          * Setup pci_windows for legacy IO and MEM space.
 540          * (Temporary until ACPI support is in place.)
 541          */
 542         controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
 543         if (controller->window == NULL)
 544                 BUG();
 545         controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
 546         controller->window[0].resource.name = "legacy_io";
 547         controller->window[0].resource.flags = IORESOURCE_IO;
 548         controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
 549         controller->window[0].resource.end =
 550             controller->window[0].resource.start + 0xffff;
 551         controller->window[0].resource.parent = &ioport_resource;
 552         controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
 553         controller->window[1].resource.name = "legacy_mem";
 554         controller->window[1].resource.flags = IORESOURCE_MEM;
 555         controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
 556         controller->window[1].resource.end =
 557             controller->window[1].resource.start + (1024 * 1024) - 1;
 558         controller->window[1].resource.parent = &iomem_resource;
 559         controller->windows = 2;
 560
 561         /*
 562          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
 563          * after this point.
 564          */
 565
 566         PCI_CONTROLLER(bus)->platform_data = provider_soft;
 567         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
 568         cnode = nasid_to_cnodeid(nasid);
 569         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 570         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
 571             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 572
 573         /*
 574          * If the node information we obtained during the fixup phase is invalid
 575          * then set controller->node to -1 (undetermined)
 576          */
 577         if (controller->node >= num_online_nodes()) {
 578                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 579
 580                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 581                                     "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 582                         b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 583                         b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
 584                 printk(KERN_WARNING "on node %d but only %d nodes online."
 585                         "Association set to undetermined.\n",
 586                         controller->node, num_online_nodes());
 587                 controller->node = -1;
 588         }
 589         return;
 590
 591 error_return:
 592
 593         kfree(sn_controller);
 594         return;
 595 }
 596
 597 void sn_bus_store_sysdata(struct pci_dev *dev)
 598 {
 599         struct sysdata_el *element;
 600
 601         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
 602         if (!element) {
 603                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
 604                 return;
 605         }
 606         element->sysdata = SN_PCIDEV_INFO(dev);
 607         list_add(&element->entry, &sn_sysdata_list);
 608 }
 609
 610 void sn_bus_free_sysdata(void)
 611 {
 612         struct sysdata_el *element;
 613         struct list_head *list;
 614
 615 sn_sysdata_free_start:
 616         list_for_each(list, &sn_sysdata_list) {
 617                 element = list_entry(list, struct sysdata_el, entry);
 618                 list_del(&element->entry);
 619                 kfree(element->sysdata);
 620                 kfree(element);
 621                 goto sn_sysdata_free_start;
 622         }
 623         return;
 624 }
 625
 626 /*
 627  * Ugly hack to get PCI setup until we have a proper ACPI namespace.
 628  */
 629
 630 #define PCI_BUSES_TO_SCAN 256
 631
 632 static int __init sn_pci_init(void)
 633 {
 634         int i = 0;
 635         int j = 0;
 636         struct pci_dev *pci_dev = NULL;
 637         extern void sn_init_cpei_timer(void);
 638 #ifdef CONFIG_PROC_FS
 639         extern void register_sn_procfs(void);
 640 #endif
 641
 642         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 643                 return 0;
 644
 645         /*
 646          * prime sn_pci_provider[].  Individial provider init routines will
 647          * override their respective default entries.
 648          */
 649
 650         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
 651                 sn_pci_provider[i] = &sn_pci_default_provider;
 652
 653         pcibr_init_provider();
 654         tioca_init_provider();
 655         tioce_init_provider();
 656
 657         /*
 658          * This is needed to avoid bounce limit checks in the blk layer
 659          */
 660         ia64_max_iommu_merge_mask = ~PAGE_MASK;
 661         sn_fixup_ionodes();
 662         sn_irq_lh_init();
 663         INIT_LIST_HEAD(&sn_sysdata_list);
 664         sn_init_cpei_timer();
 665
 666 #ifdef CONFIG_PROC_FS
 667         register_sn_procfs();
 668 #endif
 669
 670         /* busses are not known yet ... */
 671         for (i = 0; i <= max_segment_number; i++)
 672                 for (j = 0; j <= max_pcibus_number; j++)
 673                         sn_pci_controller_fixup(i, j, NULL);
 674
 675         /*
 676          * Generic Linux PCI Layer has created the pci_bus and pci_dev
 677          * structures - time for us to add our SN PLatform specific
 678          * information.
 679          */
 680
 681         while ((pci_dev =
 682                 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
 683                 sn_pci_fixup_slot(pci_dev);
 684
 685         sn_ioif_inited = 1;     /* sn I/O infrastructure now initialized */
 686
 687         return 0;
 688 }
 689
 690 /*
 691  * hubdev_init_node() - Creates the HUB data structure and link them to it's
 692  *      own NODE specific data area.
 693  */
 694 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 695 {
 696
 697         struct hubdev_info *hubdev_info;
 698
 699         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
 700                 hubdev_info =
 701                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
 702                                                              sizeof(struct
 703                                                                     hubdev_info));
 704         else
 705                 hubdev_info =
 706                     (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
 707                                                              sizeof(struct
 708                                                                     hubdev_info));
 709         npda->pdinfo = (void *)hubdev_info;
 710
 711 }
 712
 713 geoid_t
 714 cnodeid_get_geoid(cnodeid_t cnode)
 715 {
 716
 717         struct hubdev_info *hubdev;
 718
 719         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 720         return hubdev->hdi_geoid;
 721
 722 }
 723
 724 subsys_initcall(sn_pci_init);
 725 EXPORT_SYMBOL(sn_pci_fixup_slot);
 726 EXPORT_SYMBOL(sn_pci_unfixup_slot);
 727 EXPORT_SYMBOL(sn_pci_controller_fixup);
 728 EXPORT_SYMBOL(sn_bus_store_sysdata);
 729 EXPORT_SYMBOL(sn_bus_free_sysdata);