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
  27 extern void sn_init_cpei_timer(void);
  28 extern void register_sn_procfs(void);
  29
  30 static struct list_head sn_sysdata_list;
  31
  32 /* sysdata list struct */
  33 struct sysdata_el {
  34         struct list_head entry;
  35         void *sysdata;
  36 };
  37
  38 struct slab_info {
  39         struct hubdev_info hubdev;
  40 };
  41
  42 struct brick {
  43         moduleid_t id;          /* Module ID of this module        */
  44         struct slab_info slab_info[MAX_SLABS + 1];
  45 };
  46
  47 int sn_ioif_inited;             /* SN I/O infrastructure initialized? */
  48
  49 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
  50
  51 static int max_segment_number;           /* Default highest segment number */
  52 static int max_pcibus_number = 255;     /* Default highest pci bus number */
  53
  54 /*
  55  * Hooks and struct for unsupported pci providers
  56  */
  57
  58 static dma_addr_t
  59 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
  60 {
  61         return 0;
  62 }
  63
  64 static void
  65 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
  66 {
  67         return;
  68 }
  69
  70 static void *
  71 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
  72 {
  73         return NULL;
  74 }
  75
  76 static struct sn_pcibus_provider sn_pci_default_provider = {
  77         .dma_map = sn_default_pci_map,
  78         .dma_map_consistent = sn_default_pci_map,
  79         .dma_unmap = sn_default_pci_unmap,
  80         .bus_fixup = sn_default_pci_bus_fixup,
  81 };
  82
  83 /*
  84  * Retrieve the DMA Flush List given nasid, widget, and device.
  85  * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
  86  */
  87 static inline u64
  88 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
  89                              u64 address)
  90 {
  91         struct ia64_sal_retval ret_stuff;
  92         ret_stuff.status = 0;
  93         ret_stuff.v0 = 0;
  94
  95         SAL_CALL_NOLOCK(ret_stuff,
  96                         (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
  97                         (u64) nasid, (u64) widget_num,
  98                         (u64) device_num, (u64) address, 0, 0, 0);
  99         return ret_stuff.status;
 100 }
 101
 102 /*
 103  * Retrieve the hub device info structure for the given nasid.
 104  */
 105 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
 106 {
 107         struct ia64_sal_retval ret_stuff;
 108         ret_stuff.status = 0;
 109         ret_stuff.v0 = 0;
 110
 111         SAL_CALL_NOLOCK(ret_stuff,
 112                         (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
 113                         (u64) handle, (u64) address, 0, 0, 0, 0, 0);
 114         return ret_stuff.v0;
 115 }
 116
 117 /*
 118  * Retrieve the pci bus information given the bus number.
 119  */
 120 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
 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 __init 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, size;
 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                 size = (HUB_WIDGET_ID_MAX + 1) *
 255                         sizeof(struct sn_flush_device_kernel *);
 256                 hubdev->hdi_flush_nasid_list.widget_p =
 257                         kzalloc(size, GFP_KERNEL);
 258                 if (!hubdev->hdi_flush_nasid_list.widget_p)
 259                         BUG();
 260
 261                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
 262                         size = DEV_PER_WIDGET *
 263                                 sizeof(struct sn_flush_device_kernel);
 264                         sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
 265                         if (!sn_flush_device_kernel)
 266                                 BUG();
 267
 268                         dev_entry = sn_flush_device_kernel;
 269                         for (device = 0; device < DEV_PER_WIDGET;
 270                              device++,dev_entry++) {
 271                                 size = sizeof(struct sn_flush_device_common);
 272                                 dev_entry->common = kzalloc(size, GFP_KERNEL);
 273                                 if (!dev_entry->common)
 274                                         BUG();
 275
 276                                 if (sn_prom_feature_available(
 277                                                        PRF_DEVICE_FLUSH_LIST))
 278                                         status = sal_get_device_dmaflush_list(
 279                                                      nasid, widget, device,
 280                                                      (u64)(dev_entry->common));
 281                                 else
 282                                         status = sn_device_fixup_war(nasid,
 283                                                      widget, device,
 284                                                      dev_entry->common);
 285                                 if (status != SALRET_OK)
 286                                         panic("SAL call failed: %s\n",
 287                                               ia64_sal_strerror(status));
 288
 289                                 spin_lock_init(&dev_entry->sfdl_flush_lock);
 290                         }
 291
 292                         if (sn_flush_device_kernel)
 293                                 hubdev->hdi_flush_nasid_list.widget_p[widget] =
 294                                                        sn_flush_device_kernel;
 295                 }
 296         }
 297 }
 298
 299 /*
 300  * sn_pci_window_fixup() - Create a pci_window for each device resource.
 301  *                         Until ACPI support is added, we need this code
 302  *                         to setup pci_windows for use by
 303  *                         pcibios_bus_to_resource(),
 304  *                         pcibios_resource_to_bus(), etc.
 305  */
 306 static void
 307 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
 308                     s64 * pci_addrs)
 309 {
 310         struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
 311         unsigned int i;
 312         unsigned int idx;
 313         unsigned int new_count;
 314         struct pci_window *new_window;
 315
 316         if (count == 0)
 317                 return;
 318         idx = controller->windows;
 319         new_count = controller->windows + count;
 320         new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
 321         if (new_window == NULL)
 322                 BUG();
 323         if (controller->window) {
 324                 memcpy(new_window, controller->window,
 325                        sizeof(struct pci_window) * controller->windows);
 326                 kfree(controller->window);
 327         }
 328
 329         /* Setup a pci_window for each device resource. */
 330         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
 331                 if (pci_addrs[i] == -1)
 332                         continue;
 333
 334                 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
 335                 new_window[idx].resource = dev->resource[i];
 336                 idx++;
 337         }
 338
 339         controller->windows = new_count;
 340         controller->window = new_window;
 341 }
 342
 343 void sn_pci_unfixup_slot(struct pci_dev *dev)
 344 {
 345         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
 346
 347         sn_irq_unfixup(dev);
 348         pci_dev_put(host_pci_dev);
 349         pci_dev_put(dev);
 350 }
 351
 352 /*
 353  * sn_pci_fixup_slot() - This routine sets up a slot's resources
 354  * consistent with the Linux PCI abstraction layer.  Resources acquired
 355  * from our PCI provider include PIO maps to BAR space and interrupt
 356  * objects.
 357  */
 358 void sn_pci_fixup_slot(struct pci_dev *dev)
 359 {
 360         unsigned int count = 0;
 361         int idx;
 362         int segment = pci_domain_nr(dev->bus);
 363         int status = 0;
 364         struct pcibus_bussoft *bs;
 365         struct pci_bus *host_pci_bus;
 366         struct pci_dev *host_pci_dev;
 367         struct pcidev_info *pcidev_info;
 368         s64 pci_addrs[PCI_ROM_RESOURCE + 1];
 369         struct sn_irq_info *sn_irq_info;
 370         unsigned long size;
 371         unsigned int bus_no, devfn;
 372
 373         pci_dev_get(dev); /* for the sysdata pointer */
 374         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
 375         if (!pcidev_info)
 376                 BUG();          /* Cannot afford to run out of memory */
 377
 378         sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
 379         if (!sn_irq_info)
 380                 BUG();          /* Cannot afford to run out of memory */
 381
 382         /* Call to retrieve pci device information needed by kernel. */
 383         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
 384                                      dev->devfn,
 385                                      (u64) __pa(pcidev_info),
 386                                      (u64) __pa(sn_irq_info));
 387         if (status)
 388                 BUG(); /* Cannot get platform pci device information */
 389
 390         /* Add pcidev_info to list in sn_pci_controller struct */
 391         list_add_tail(&pcidev_info->pdi_list,
 392                       &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
 393
 394         /* Copy over PIO Mapped Addresses */
 395         for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
 396                 unsigned long start, end, addr;
 397
 398                 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
 399                         pci_addrs[idx] = -1;
 400                         continue;
 401                 }
 402
 403                 start = dev->resource[idx].start;
 404                 end = dev->resource[idx].end;
 405                 size = end - start;
 406                 if (size == 0) {
 407                         pci_addrs[idx] = -1;
 408                         continue;
 409                 }
 410                 pci_addrs[idx] = start;
 411                 count++;
 412                 addr = pcidev_info->pdi_pio_mapped_addr[idx];
 413                 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
 414                 dev->resource[idx].start = addr;
 415                 dev->resource[idx].end = addr + size;
 416                 if (dev->resource[idx].flags & IORESOURCE_IO)
 417                         dev->resource[idx].parent = &ioport_resource;
 418                 else
 419                         dev->resource[idx].parent = &iomem_resource;
 420         }
 421         /* Create a pci_window in the pci_controller struct for
 422          * each device resource.
 423          */
 424         if (count > 0)
 425                 sn_pci_window_fixup(dev, count, pci_addrs);
 426
 427         /*
 428          * Using the PROMs values for the PCI host bus, get the Linux
 429          * PCI host_pci_dev struct and set up host bus linkages
 430          */
 431
 432         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
 433         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
 434         host_pci_bus = pci_find_bus(segment, bus_no);
 435         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
 436
 437         pcidev_info->host_pci_dev = host_pci_dev;
 438         pcidev_info->pdi_linux_pcidev = dev;
 439         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
 440         bs = SN_PCIBUS_BUSSOFT(dev->bus);
 441         pcidev_info->pdi_pcibus_info = bs;
 442
 443         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
 444                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
 445         } else {
 446                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
 447         }
 448
 449         /* Only set up IRQ stuff if this device has a host bus context */
 450         if (bs && sn_irq_info->irq_irq) {
 451                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
 452                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
 453                 sn_irq_fixup(dev, sn_irq_info);
 454         } else {
 455                 pcidev_info->pdi_sn_irq_info = NULL;
 456                 kfree(sn_irq_info);
 457         }
 458
 459         /*
 460          * MSI currently not supported on altix.  Remove this when
 461          * the MSI abstraction patches are integrated into the kernel
 462          * (sometime after 2.6.16 releases)
 463          */
 464         dev->no_msi = 1;
 465 }
 466
 467 /*
 468  * sn_pci_controller_fixup() - This routine sets up a bus's resources
 469  * consistent with the Linux PCI abstraction layer.
 470  */
 471 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 472 {
 473         int status;
 474         int nasid, cnode;
 475         struct pci_controller *controller;
 476         struct sn_pci_controller *sn_controller;
 477         struct pcibus_bussoft *prom_bussoft_ptr;
 478         struct hubdev_info *hubdev_info;
 479         void *provider_soft;
 480         struct sn_pcibus_provider *provider;
 481
 482         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
 483                                      (u64) ia64_tpa(&prom_bussoft_ptr));
 484         if (status > 0)
 485                 return;         /*bus # does not exist */
 486         prom_bussoft_ptr = __va(prom_bussoft_ptr);
 487
 488         /* Allocate a sn_pci_controller, which has a pci_controller struct
 489          * as the first member.
 490          */
 491         sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
 492         if (!sn_controller)
 493                 BUG();
 494         INIT_LIST_HEAD(&sn_controller->pcidev_info);
 495         controller = &sn_controller->pci_controller;
 496         controller->segment = segment;
 497
 498         if (bus == NULL) {
 499                 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
 500                 if (bus == NULL)
 501                         goto error_return; /* error, or bus already scanned */
 502                 bus->sysdata = NULL;
 503         }
 504
 505         if (bus->sysdata)
 506                 goto error_return; /* sysdata already alloc'd */
 507
 508         /*
 509          * Per-provider fixup.  Copies the contents from prom to local
 510          * area and links SN_PCIBUS_BUSSOFT().
 511          */
 512
 513         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
 514                 goto error_return; /* unsupported asic type */
 515
 516         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
 517                 goto error_return; /* no further fixup necessary */
 518
 519         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
 520         if (provider == NULL)
 521                 goto error_return; /* no provider registerd for this asic */
 522
 523         bus->sysdata = controller;
 524         if (provider->bus_fixup)
 525                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
 526         else
 527                 provider_soft = NULL;
 528
 529         if (provider_soft == NULL) {
 530                 /* fixup failed or not applicable */
 531                 bus->sysdata = NULL;
 532                 goto error_return;
 533         }
 534
 535         /*
 536          * Setup pci_windows for legacy IO and MEM space.
 537          * (Temporary until ACPI support is in place.)
 538          */
 539         controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
 540         if (controller->window == NULL)
 541                 BUG();
 542         controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
 543         controller->window[0].resource.name = "legacy_io";
 544         controller->window[0].resource.flags = IORESOURCE_IO;
 545         controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
 546         controller->window[0].resource.end =
 547             controller->window[0].resource.start + 0xffff;
 548         controller->window[0].resource.parent = &ioport_resource;
 549         controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
 550         controller->window[1].resource.name = "legacy_mem";
 551         controller->window[1].resource.flags = IORESOURCE_MEM;
 552         controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
 553         controller->window[1].resource.end =
 554             controller->window[1].resource.start + (1024 * 1024) - 1;
 555         controller->window[1].resource.parent = &iomem_resource;
 556         controller->windows = 2;
 557
 558         /*
 559          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
 560          * after this point.
 561          */
 562
 563         PCI_CONTROLLER(bus)->platform_data = provider_soft;
 564         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
 565         cnode = nasid_to_cnodeid(nasid);
 566         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 567         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
 568             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 569
 570         /*
 571          * If the node information we obtained during the fixup phase is invalid
 572          * then set controller->node to -1 (undetermined)
 573          */
 574         if (controller->node >= num_online_nodes()) {
 575                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
 576
 577                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
 578                                     "L_IO=%lx L_MEM=%lx BASE=%lx\n",
 579                         b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
 580                         b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
 581                 printk(KERN_WARNING "on node %d but only %d nodes online."
 582                         "Association set to undetermined.\n",
 583                         controller->node, num_online_nodes());
 584                 controller->node = -1;
 585         }
 586         return;
 587
 588 error_return:
 589
 590         kfree(sn_controller);
 591         return;
 592 }
 593
 594 void sn_bus_store_sysdata(struct pci_dev *dev)
 595 {
 596         struct sysdata_el *element;
 597
 598         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
 599         if (!element) {
 600                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
 601                 return;
 602         }
 603         element->sysdata = SN_PCIDEV_INFO(dev);
 604         list_add(&element->entry, &sn_sysdata_list);
 605 }
 606
 607 void sn_bus_free_sysdata(void)
 608 {
 609         struct sysdata_el *element;
 610         struct list_head *list, *safe;
 611
 612         list_for_each_safe(list, safe, &sn_sysdata_list) {
 613                 element = list_entry(list, struct sysdata_el, entry);
 614                 list_del(&element->entry);
 615                 list_del(&(((struct pcidev_info *)
 616                              (element->sysdata))->pdi_list));
 617                 kfree(element->sysdata);
 618                 kfree(element);
 619         }
 620         return;
 621 }
 622
 623 /*
 624  * Ugly hack to get PCI setup until we have a proper ACPI namespace.
 625  */
 626
 627 #define PCI_BUSES_TO_SCAN 256
 628
 629 static int __init sn_pci_init(void)
 630 {
 631         int i, j;
 632         struct pci_dev *pci_dev = NULL;
 633
 634         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
 635                 return 0;
 636
 637         /*
 638          * prime sn_pci_provider[].  Individial provider init routines will
 639          * override their respective default entries.
 640          */
 641
 642         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
 643                 sn_pci_provider[i] = &sn_pci_default_provider;
 644
 645         pcibr_init_provider();
 646         tioca_init_provider();
 647         tioce_init_provider();
 648
 649         /*
 650          * This is needed to avoid bounce limit checks in the blk layer
 651          */
 652         ia64_max_iommu_merge_mask = ~PAGE_MASK;
 653         sn_fixup_ionodes();
 654         sn_irq_lh_init();
 655         INIT_LIST_HEAD(&sn_sysdata_list);
 656         sn_init_cpei_timer();
 657
 658 #ifdef CONFIG_PROC_FS
 659         register_sn_procfs();
 660 #endif
 661
 662         /* busses are not known yet ... */
 663         for (i = 0; i <= max_segment_number; i++)
 664                 for (j = 0; j <= max_pcibus_number; j++)
 665                         sn_pci_controller_fixup(i, j, NULL);
 666
 667         /*
 668          * Generic Linux PCI Layer has created the pci_bus and pci_dev
 669          * structures - time for us to add our SN PLatform specific
 670          * information.
 671          */
 672
 673         while ((pci_dev =
 674                 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
 675                 sn_pci_fixup_slot(pci_dev);
 676
 677         sn_ioif_inited = 1;     /* sn I/O infrastructure now initialized */
 678
 679         return 0;
 680 }
 681
 682 /*
 683  * hubdev_init_node() - Creates the HUB data structure and link them to it's
 684  *      own NODE specific data area.
 685  */
 686 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
 687 {
 688         struct hubdev_info *hubdev_info;
 689         int size;
 690         pg_data_t *pg;
 691
 692         size = sizeof(struct hubdev_info);
 693
 694         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
 695                 pg = NODE_DATA(0);
 696         else
 697                 pg = NODE_DATA(node);
 698
 699         hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
 700
 701         npda->pdinfo = (void *)hubdev_info;
 702 }
 703
 704 geoid_t
 705 cnodeid_get_geoid(cnodeid_t cnode)
 706 {
 707         struct hubdev_info *hubdev;
 708
 709         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
 710         return hubdev->hdi_geoid;
 711 }
 712
 713 subsys_initcall(sn_pci_init);
 714 EXPORT_SYMBOL(sn_pci_fixup_slot);
 715 EXPORT_SYMBOL(sn_pci_unfixup_slot);
 716 EXPORT_SYMBOL(sn_pci_controller_fixup);
 717 EXPORT_SYMBOL(sn_bus_store_sysdata);
 718 EXPORT_SYMBOL(sn_bus_free_sysdata);