arch/ia64/sn/kernel/setup.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) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
   7  */
   8
   9 #include <linux/config.h>
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/delay.h>
  13 #include <linux/kernel.h>
  14 #include <linux/kdev_t.h>
  15 #include <linux/string.h>
  16 #include <linux/tty.h>
  17 #include <linux/console.h>
  18 #include <linux/timex.h>
  19 #include <linux/sched.h>
  20 #include <linux/ioport.h>
  21 #include <linux/mm.h>
  22 #include <linux/serial.h>
  23 #include <linux/irq.h>
  24 #include <linux/bootmem.h>
  25 #include <linux/mmzone.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/acpi.h>
  28 #include <linux/compiler.h>
  29 #include <linux/sched.h>
  30 #include <linux/root_dev.h>
  31 #include <linux/nodemask.h>
  32 #include <linux/pm.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/sal.h>
  36 #include <asm/machvec.h>
  37 #include <asm/system.h>
  38 #include <asm/processor.h>
  39 #include <asm/vga.h>
  40 #include <asm/sn/arch.h>
  41 #include <asm/sn/addrs.h>
  42 #include <asm/sn/pda.h>
  43 #include <asm/sn/nodepda.h>
  44 #include <asm/sn/sn_cpuid.h>
  45 #include <asm/sn/simulator.h>
  46 #include <asm/sn/leds.h>
  47 #include <asm/sn/bte.h>
  48 #include <asm/sn/shub_mmr.h>
  49 #include <asm/sn/clksupport.h>
  50 #include <asm/sn/sn_sal.h>
  51 #include <asm/sn/geo.h>
  52 #include <asm/sn/sn_feature_sets.h>
  53 #include "xtalk/xwidgetdev.h"
  54 #include "xtalk/hubdev.h"
  55 #include <asm/sn/klconfig.h>
  56
  57
  58 DEFINE_PER_CPU(struct pda_s, pda_percpu);
  59
  60 #define MAX_PHYS_MEMORY         (1UL << IA64_MAX_PHYS_BITS)     /* Max physical address supported */
  61
  62 lboard_t *root_lboard[MAX_COMPACT_NODES];
  63
  64 extern void bte_init_node(nodepda_t *, cnodeid_t);
  65
  66 extern void sn_timer_init(void);
  67 extern unsigned long last_time_offset;
  68 extern void (*ia64_mark_idle) (int);
  69 extern void snidle(int);
  70 extern unsigned char acpi_kbd_controller_present;
  71
  72 unsigned long sn_rtc_cycles_per_second;
  73 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
  74
  75 DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
  76 EXPORT_PER_CPU_SYMBOL(__sn_hub_info);
  77
  78 DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
  79 EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid);
  80
  81 DEFINE_PER_CPU(struct nodepda_s *, __sn_nodepda);
  82 EXPORT_PER_CPU_SYMBOL(__sn_nodepda);
  83
  84 char sn_system_serial_number_string[128];
  85 EXPORT_SYMBOL(sn_system_serial_number_string);
  86 u64 sn_partition_serial_number;
  87 EXPORT_SYMBOL(sn_partition_serial_number);
  88 u8 sn_partition_id;
  89 EXPORT_SYMBOL(sn_partition_id);
  90 u8 sn_system_size;
  91 EXPORT_SYMBOL(sn_system_size);
  92 u8 sn_sharing_domain_size;
  93 EXPORT_SYMBOL(sn_sharing_domain_size);
  94 u8 sn_coherency_id;
  95 EXPORT_SYMBOL(sn_coherency_id);
  96 u8 sn_region_size;
  97 EXPORT_SYMBOL(sn_region_size);
  98 int sn_prom_type;       /* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
  99
 100 short physical_node_map[MAX_PHYSNODE_ID];
 101 static unsigned long sn_prom_features[MAX_PROM_FEATURE_SETS];
 102
 103 EXPORT_SYMBOL(physical_node_map);
 104
 105 int numionodes;
 106
 107 static void sn_init_pdas(char **);
 108 static void scan_for_ionodes(void);
 109
 110 static nodepda_t *nodepdaindr[MAX_COMPACT_NODES];
 111
 112 /*
 113  * The format of "screen_info" is strange, and due to early i386-setup
 114  * code. This is just enough to make the console code think we're on a
 115  * VGA color display.
 116  */
 117 struct screen_info sn_screen_info = {
 118         .orig_x = 0,
 119         .orig_y = 0,
 120         .orig_video_mode = 3,
 121         .orig_video_cols = 80,
 122         .orig_video_ega_bx = 3,
 123         .orig_video_lines = 25,
 124         .orig_video_isVGA = 1,
 125         .orig_video_points = 16
 126 };
 127
 128 /*
 129  * This is here so we can use the CMOS detection in ide-probe.c to
 130  * determine what drives are present.  In theory, we don't need this
 131  * as the auto-detection could be done via ide-probe.c:do_probe() but
 132  * in practice that would be much slower, which is painful when
 133  * running in the simulator.  Note that passing zeroes in DRIVE_INFO
 134  * is sufficient (the IDE driver will autodetect the drive geometry).
 135  */
 136 #ifdef CONFIG_IA64_GENERIC
 137 extern char drive_info[4 * 16];
 138 #else
 139 char drive_info[4 * 16];
 140 #endif
 141
 142 /*
 143  * Get nasid of current cpu early in boot before nodepda is initialized
 144  */
 145 static int
 146 boot_get_nasid(void)
 147 {
 148         int nasid;
 149
 150         if (ia64_sn_get_sapic_info(get_sapicid(), &nasid, NULL, NULL))
 151                 BUG();
 152         return nasid;
 153 }
 154
 155 /*
 156  * This routine can only be used during init, since
 157  * smp_boot_data is an init data structure.
 158  * We have to use smp_boot_data.cpu_phys_id to find
 159  * the physical id of the processor because the normal
 160  * cpu_physical_id() relies on data structures that
 161  * may not be initialized yet.
 162  */
 163
 164 static int __init pxm_to_nasid(int pxm)
 165 {
 166         int i;
 167         int nid;
 168
 169         nid = pxm_to_nid_map[pxm];
 170         for (i = 0; i < num_node_memblks; i++) {
 171                 if (node_memblk[i].nid == nid) {
 172                         return NASID_GET(node_memblk[i].start_paddr);
 173                 }
 174         }
 175         return -1;
 176 }
 177
 178 /**
 179  * early_sn_setup - early setup routine for SN platforms
 180  *
 181  * Sets up an initial console to aid debugging.  Intended primarily
 182  * for bringup.  See start_kernel() in init/main.c.
 183  */
 184
 185 void __init early_sn_setup(void)
 186 {
 187         efi_system_table_t *efi_systab;
 188         efi_config_table_t *config_tables;
 189         struct ia64_sal_systab *sal_systab;
 190         struct ia64_sal_desc_entry_point *ep;
 191         char *p;
 192         int i, j;
 193
 194         /*
 195          * Parse enough of the SAL tables to locate the SAL entry point. Since, console
 196          * IO on SN2 is done via SAL calls, early_printk won't work without this.
 197          *
 198          * This code duplicates some of the ACPI table parsing that is in efi.c & sal.c.
 199          * Any changes to those file may have to be made hereas well.
 200          */
 201         efi_systab = (efi_system_table_t *) __va(ia64_boot_param->efi_systab);
 202         config_tables = __va(efi_systab->tables);
 203         for (i = 0; i < efi_systab->nr_tables; i++) {
 204                 if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) ==
 205                     0) {
 206                         sal_systab = __va(config_tables[i].table);
 207                         p = (char *)(sal_systab + 1);
 208                         for (j = 0; j < sal_systab->entry_count; j++) {
 209                                 if (*p == SAL_DESC_ENTRY_POINT) {
 210                                         ep = (struct ia64_sal_desc_entry_point
 211                                               *)p;
 212                                         ia64_sal_handler_init(__va
 213                                                               (ep->sal_proc),
 214                                                               __va(ep->gp));
 215                                         return;
 216                                 }
 217                                 p += SAL_DESC_SIZE(*p);
 218                         }
 219                 }
 220         }
 221         /* Uh-oh, SAL not available?? */
 222         printk(KERN_ERR "failed to find SAL entry point\n");
 223 }
 224
 225 extern int platform_intr_list[];
 226 extern nasid_t master_nasid;
 227 static int __initdata shub_1_1_found = 0;
 228
 229 /*
 230  * sn_check_for_wars
 231  *
 232  * Set flag for enabling shub specific wars
 233  */
 234
 235 static inline int __init is_shub_1_1(int nasid)
 236 {
 237         unsigned long id;
 238         int rev;
 239
 240         if (is_shub2())
 241                 return 0;
 242         id = REMOTE_HUB_L(nasid, SH1_SHUB_ID);
 243         rev = (id & SH1_SHUB_ID_REVISION_MASK) >> SH1_SHUB_ID_REVISION_SHFT;
 244         return rev <= 2;
 245 }
 246
 247 static void __init sn_check_for_wars(void)
 248 {
 249         int cnode;
 250
 251         if (is_shub2()) {
 252                 /* none yet */
 253         } else {
 254                 for_each_online_node(cnode) {
 255                         if (is_shub_1_1(cnodeid_to_nasid(cnode)))
 256                                 shub_1_1_found = 1;
 257                 }
 258         }
 259 }
 260
 261 /**
 262  * sn_setup - SN platform setup routine
 263  * @cmdline_p: kernel command line
 264  *
 265  * Handles platform setup for SN machines.  This includes determining
 266  * the RTC frequency (via a SAL call), initializing secondary CPUs, and
 267  * setting up per-node data areas.  The console is also initialized here.
 268  */
 269 void __init sn_setup(char **cmdline_p)
 270 {
 271         long status, ticks_per_sec, drift;
 272         int pxm;
 273         u32 version = sn_sal_rev();
 274         extern void sn_cpu_init(void);
 275
 276         ia64_sn_plat_set_error_handling_features();     // obsolete
 277         ia64_sn_set_os_feature(OSF_MCA_SLV_TO_OS_INIT_SLV);
 278         ia64_sn_set_os_feature(OSF_FEAT_LOG_SBES);
 279
 280
 281 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
 282         /*
 283          * If there was a primary vga adapter identified through the
 284          * EFI PCDP table, make it the preferred console.  Otherwise
 285          * zero out conswitchp.
 286          */
 287
 288         if (vga_console_membase) {
 289                 /* usable vga ... make tty0 the preferred default console */
 290                 add_preferred_console("tty", 0, NULL);
 291         } else {
 292                 printk(KERN_DEBUG "SGI: Disabling VGA console\n");
 293 #ifdef CONFIG_DUMMY_CONSOLE
 294                 conswitchp = &dummy_con;
 295 #else
 296                 conswitchp = NULL;
 297 #endif                          /* CONFIG_DUMMY_CONSOLE */
 298         }
 299 #endif                          /* def(CONFIG_VT) && def(CONFIG_VGA_CONSOLE) */
 300
 301         MAX_DMA_ADDRESS = PAGE_OFFSET + MAX_PHYS_MEMORY;
 302
 303         memset(physical_node_map, -1, sizeof(physical_node_map));
 304         for (pxm = 0; pxm < MAX_PXM_DOMAINS; pxm++)
 305                 if (pxm_to_nid_map[pxm] != -1)
 306                         physical_node_map[pxm_to_nasid(pxm)] =
 307                             pxm_to_nid_map[pxm];
 308
 309         /*
 310          * Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
 311          * support here so we don't have to listen to failed keyboard probe
 312          * messages.
 313          */
 314         if (version <= 0x0209 && acpi_kbd_controller_present) {
 315                 printk(KERN_INFO "Disabling legacy keyboard support as prom "
 316                        "is too old and doesn't provide FADT\n");
 317                 acpi_kbd_controller_present = 0;
 318         }
 319
 320         printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
 321
 322         master_nasid = boot_get_nasid();
 323
 324         status =
 325             ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
 326                                &drift);
 327         if (status != 0 || ticks_per_sec < 100000) {
 328                 printk(KERN_WARNING
 329                        "unable to determine platform RTC clock frequency, guessing.\n");
 330                 /* PROM gives wrong value for clock freq. so guess */
 331                 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
 332         } else
 333                 sn_rtc_cycles_per_second = ticks_per_sec;
 334
 335         platform_intr_list[ACPI_INTERRUPT_CPEI] = IA64_CPE_VECTOR;
 336
 337         /*
 338          * we set the default root device to /dev/hda
 339          * to make simulation easy
 340          */
 341         ROOT_DEV = Root_HDA1;
 342
 343         /*
 344          * Create the PDAs and NODEPDAs for all the cpus.
 345          */
 346         sn_init_pdas(cmdline_p);
 347
 348         ia64_mark_idle = &snidle;
 349
 350         /*
 351          * For the bootcpu, we do this here. All other cpus will make the
 352          * call as part of cpu_init in slave cpu initialization.
 353          */
 354         sn_cpu_init();
 355
 356 #ifdef CONFIG_SMP
 357         init_smp_config();
 358 #endif
 359         screen_info = sn_screen_info;
 360
 361         sn_timer_init();
 362
 363         /*
 364          * set pm_power_off to a SAL call to allow
 365          * sn machines to power off. The SAL call can be replaced
 366          * by an ACPI interface call when ACPI is fully implemented
 367          * for sn.
 368          */
 369         pm_power_off = ia64_sn_power_down;
 370 }
 371
 372 /**
 373  * sn_init_pdas - setup node data areas
 374  *
 375  * One time setup for Node Data Area.  Called by sn_setup().
 376  */
 377 static void __init sn_init_pdas(char **cmdline_p)
 378 {
 379         cnodeid_t cnode;
 380
 381         memset(sn_cnodeid_to_nasid, -1,
 382                         sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
 383         for_each_online_node(cnode)
 384                 sn_cnodeid_to_nasid[cnode] =
 385                                 pxm_to_nasid(nid_to_pxm_map[cnode]);
 386
 387         numionodes = num_online_nodes();
 388         scan_for_ionodes();
 389
 390         /*
 391          * Allocate & initalize the nodepda for each node.
 392          */
 393         for_each_online_node(cnode) {
 394                 nodepdaindr[cnode] =
 395                     alloc_bootmem_node(NODE_DATA(cnode), sizeof(nodepda_t));
 396                 memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
 397                 memset(nodepdaindr[cnode]->phys_cpuid, -1,
 398                     sizeof(nodepdaindr[cnode]->phys_cpuid));
 399                 spin_lock_init(&nodepdaindr[cnode]->ptc_lock);
 400         }
 401
 402         /*
 403          * Allocate & initialize nodepda for TIOs.  For now, put them on node 0.
 404          */
 405         for (cnode = num_online_nodes(); cnode < numionodes; cnode++) {
 406                 nodepdaindr[cnode] =
 407                     alloc_bootmem_node(NODE_DATA(0), sizeof(nodepda_t));
 408                 memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
 409         }
 410
 411         /*
 412          * Now copy the array of nodepda pointers to each nodepda.
 413          */
 414         for (cnode = 0; cnode < numionodes; cnode++)
 415                 memcpy(nodepdaindr[cnode]->pernode_pdaindr, nodepdaindr,
 416                        sizeof(nodepdaindr));
 417
 418         /*
 419          * Set up IO related platform-dependent nodepda fields.
 420          * The following routine actually sets up the hubinfo struct
 421          * in nodepda.
 422          */
 423         for_each_online_node(cnode) {
 424                 bte_init_node(nodepdaindr[cnode], cnode);
 425         }
 426
 427         /*
 428          * Initialize the per node hubdev.  This includes IO Nodes and
 429          * headless/memless nodes.
 430          */
 431         for (cnode = 0; cnode < numionodes; cnode++) {
 432                 hubdev_init_node(nodepdaindr[cnode], cnode);
 433         }
 434 }
 435
 436 /**
 437  * sn_cpu_init - initialize per-cpu data areas
 438  * @cpuid: cpuid of the caller
 439  *
 440  * Called during cpu initialization on each cpu as it starts.
 441  * Currently, initializes the per-cpu data area for SNIA.
 442  * Also sets up a few fields in the nodepda.  Also known as
 443  * platform_cpu_init() by the ia64 machvec code.
 444  */
 445 void __init sn_cpu_init(void)
 446 {
 447         int cpuid;
 448         int cpuphyid;
 449         int nasid;
 450         int subnode;
 451         int slice;
 452         int cnode;
 453         int i;
 454         static int wars_have_been_checked;
 455
 456         if (smp_processor_id() == 0 && IS_MEDUSA()) {
 457                 if (ia64_sn_is_fake_prom())
 458                         sn_prom_type = 2;
 459                 else
 460                         sn_prom_type = 1;
 461                 printk("Running on medusa with %s PROM\n", (sn_prom_type == 1) ? "real" : "fake");
 462         }
 463
 464         memset(pda, 0, sizeof(pda));
 465         if (ia64_sn_get_sn_info(0, &sn_hub_info->shub2, &sn_hub_info->nasid_bitmask, &sn_hub_info->nasid_shift,
 466                                 &sn_system_size, &sn_sharing_domain_size, &sn_partition_id,
 467                                 &sn_coherency_id, &sn_region_size))
 468                 BUG();
 469         sn_hub_info->as_shift = sn_hub_info->nasid_shift - 2;
 470
 471         /*
 472          * The boot cpu makes this call again after platform initialization is
 473          * complete.
 474          */
 475         if (nodepdaindr[0] == NULL)
 476                 return;
 477
 478         for (i = 0; i < MAX_PROM_FEATURE_SETS; i++)
 479                 if (ia64_sn_get_prom_feature_set(i, &sn_prom_features[i]) != 0)
 480                         break;
 481
 482         cpuid = smp_processor_id();
 483         cpuphyid = get_sapicid();
 484
 485         if (ia64_sn_get_sapic_info(cpuphyid, &nasid, &subnode, &slice))
 486                 BUG();
 487
 488         for (i=0; i < MAX_NUMNODES; i++) {
 489                 if (nodepdaindr[i]) {
 490                         nodepdaindr[i]->phys_cpuid[cpuid].nasid = nasid;
 491                         nodepdaindr[i]->phys_cpuid[cpuid].slice = slice;
 492                         nodepdaindr[i]->phys_cpuid[cpuid].subnode = subnode;
 493                 }
 494         }
 495
 496         cnode = nasid_to_cnodeid(nasid);
 497
 498         sn_nodepda = nodepdaindr[cnode];
 499
 500         pda->led_address =
 501             (typeof(pda->led_address)) (LED0 + (slice << LED_CPU_SHIFT));
 502         pda->led_state = LED_ALWAYS_SET;
 503         pda->hb_count = HZ / 2;
 504         pda->hb_state = 0;
 505         pda->idle_flag = 0;
 506
 507         if (cpuid != 0) {
 508                 /* copy cpu 0's sn_cnodeid_to_nasid table to this cpu's */
 509                 memcpy(sn_cnodeid_to_nasid,
 510                        (&per_cpu(__sn_cnodeid_to_nasid, 0)),
 511                        sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
 512         }
 513
 514         /*
 515          * Check for WARs.
 516          * Only needs to be done once, on BSP.
 517          * Has to be done after loop above, because it uses this cpu's
 518          * sn_cnodeid_to_nasid table which was just initialized if this
 519          * isn't cpu 0.
 520          * Has to be done before assignment below.
 521          */
 522         if (!wars_have_been_checked) {
 523                 sn_check_for_wars();
 524                 wars_have_been_checked = 1;
 525         }
 526         sn_hub_info->shub_1_1_found = shub_1_1_found;
 527
 528         /*
 529          * Set up addresses of PIO/MEM write status registers.
 530          */
 531         {
 532                 u64 pio1[] = {SH1_PIO_WRITE_STATUS_0, 0, SH1_PIO_WRITE_STATUS_1, 0};
 533                 u64 pio2[] = {SH2_PIO_WRITE_STATUS_0, SH2_PIO_WRITE_STATUS_2,
 534                         SH2_PIO_WRITE_STATUS_1, SH2_PIO_WRITE_STATUS_3};
 535                 u64 *pio;
 536                 pio = is_shub1() ? pio1 : pio2;
 537                 pda->pio_write_status_addr = (volatile unsigned long *) LOCAL_MMR_ADDR(pio[slice]);
 538                 pda->pio_write_status_val = is_shub1() ? SH_PIO_WRITE_STATUS_PENDING_WRITE_COUNT_MASK : 0;
 539         }
 540
 541         /*
 542          * WAR addresses for SHUB 1.x.
 543          */
 544         if (local_node_data->active_cpu_count++ == 0 && is_shub1()) {
 545                 int buddy_nasid;
 546                 buddy_nasid =
 547                     cnodeid_to_nasid(numa_node_id() ==
 548                                      num_online_nodes() - 1 ? 0 : numa_node_id() + 1);
 549                 pda->pio_shub_war_cam_addr =
 550                     (volatile unsigned long *)GLOBAL_MMR_ADDR(nasid,
 551                                                               SH1_PI_CAM_CONTROL);
 552         }
 553 }
 554
 555 /*
 556  * Scan klconfig for ionodes.  Add the nasids to the
 557  * physical_node_map and the pda and increment numionodes.
 558  */
 559
 560 static void __init scan_for_ionodes(void)
 561 {
 562         int nasid = 0;
 563         lboard_t *brd;
 564
 565         /* fakeprom does not support klgraph */
 566         if (IS_RUNNING_ON_FAKE_PROM())
 567                 return;
 568
 569         /* Setup ionodes with memory */
 570         for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
 571                 char *klgraph_header;
 572                 cnodeid_t cnodeid;
 573
 574                 if (physical_node_map[nasid] == -1)
 575                         continue;
 576
 577                 cnodeid = -1;
 578                 klgraph_header = __va(ia64_sn_get_klconfig_addr(nasid));
 579                 if (!klgraph_header) {
 580                         BUG();  /* All nodes must have klconfig tables! */
 581                 }
 582                 cnodeid = nasid_to_cnodeid(nasid);
 583                 root_lboard[cnodeid] = (lboard_t *)
 584                     NODE_OFFSET_TO_LBOARD((nasid),
 585                                           ((kl_config_hdr_t
 586                                             *) (klgraph_header))->
 587                                           ch_board_info);
 588         }
 589
 590         /* Scan headless/memless IO Nodes. */
 591         for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
 592                 /* if there's no nasid, don't try to read the klconfig on the node */
 593                 if (physical_node_map[nasid] == -1)
 594                         continue;
 595                 brd = find_lboard_any((lboard_t *)
 596                                       root_lboard[nasid_to_cnodeid(nasid)],
 597                                       KLTYPE_SNIA);
 598                 if (brd) {
 599                         brd = KLCF_NEXT_ANY(brd);       /* Skip this node's lboard */
 600                         if (!brd)
 601                                 continue;
 602                 }
 603
 604                 brd = find_lboard_any(brd, KLTYPE_SNIA);
 605
 606                 while (brd) {
 607                         sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
 608                         physical_node_map[brd->brd_nasid] = numionodes;
 609                         root_lboard[numionodes] = brd;
 610                         numionodes++;
 611                         brd = KLCF_NEXT_ANY(brd);
 612                         if (!brd)
 613                                 break;
 614
 615                         brd = find_lboard_any(brd, KLTYPE_SNIA);
 616                 }
 617         }
 618
 619         /* Scan for TIO nodes. */
 620         for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
 621                 /* if there's no nasid, don't try to read the klconfig on the node */
 622                 if (physical_node_map[nasid] == -1)
 623                         continue;
 624                 brd = find_lboard_any((lboard_t *)
 625                                       root_lboard[nasid_to_cnodeid(nasid)],
 626                                       KLTYPE_TIO);
 627                 while (brd) {
 628                         sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
 629                         physical_node_map[brd->brd_nasid] = numionodes;
 630                         root_lboard[numionodes] = brd;
 631                         numionodes++;
 632                         brd = KLCF_NEXT_ANY(brd);
 633                         if (!brd)
 634                                 break;
 635
 636                         brd = find_lboard_any(brd, KLTYPE_TIO);
 637                 }
 638         }
 639 }
 640
 641 int
 642 nasid_slice_to_cpuid(int nasid, int slice)
 643 {
 644         long cpu;
 645
 646         for (cpu=0; cpu < NR_CPUS; cpu++)
 647                 if (cpuid_to_nasid(cpu) == nasid &&
 648                                         cpuid_to_slice(cpu) == slice)
 649                         return cpu;
 650
 651         return -1;
 652 }
 653
 654 int sn_prom_feature_available(int id)
 655 {
 656         if (id >= BITS_PER_LONG * MAX_PROM_FEATURE_SETS)
 657                 return 0;
 658         return test_bit(id, sn_prom_features);
 659 }
 660 EXPORT_SYMBOL(sn_prom_feature_available);
 661