git.oblomov.eu Git - linux-2.6/blob - arch/x86/kernel/genx2apic_uv_x.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  * SGI UV APIC functions (note: not an Intel compatible APIC)
   7  *
   8  * Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/threads.h>
  13 #include <linux/cpu.h>
  14 #include <linux/cpumask.h>
  15 #include <linux/string.h>
  16 #include <linux/ctype.h>
  17 #include <linux/init.h>
  18 #include <linux/sched.h>
  19 #include <linux/module.h>
  20 #include <linux/hardirq.h>
  21 #include <linux/timer.h>
  22 #include <linux/proc_fs.h>
  23 #include <asm/current.h>
  24 #include <asm/smp.h>
  25 #include <asm/ipi.h>
  26 #include <asm/genapic.h>
  27 #include <asm/pgtable.h>
  28 #include <asm/uv/uv_mmrs.h>
  29 #include <asm/uv/uv_hub.h>
  30 #include <asm/uv/bios.h>
  31
  32 DEFINE_PER_CPU(int, x2apic_extra_bits);
  33
  34 static enum uv_system_type uv_system_type;
  35
  36 static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  37 {
  38         if (!strcmp(oem_id, "SGI")) {
  39                 if (!strcmp(oem_table_id, "UVL"))
  40                         uv_system_type = UV_LEGACY_APIC;
  41                 else if (!strcmp(oem_table_id, "UVX"))
  42                         uv_system_type = UV_X2APIC;
  43                 else if (!strcmp(oem_table_id, "UVH")) {
  44                         uv_system_type = UV_NON_UNIQUE_APIC;
  45                         return 1;
  46                 }
  47         }
  48         return 0;
  49 }
  50
  51 enum uv_system_type get_uv_system_type(void)
  52 {
  53         return uv_system_type;
  54 }
  55
  56 int is_uv_system(void)
  57 {
  58         return uv_system_type != UV_NONE;
  59 }
  60 EXPORT_SYMBOL_GPL(is_uv_system);
  61
  62 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
  63 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
  64
  65 struct uv_blade_info *uv_blade_info;
  66 EXPORT_SYMBOL_GPL(uv_blade_info);
  67
  68 short *uv_node_to_blade;
  69 EXPORT_SYMBOL_GPL(uv_node_to_blade);
  70
  71 short *uv_cpu_to_blade;
  72 EXPORT_SYMBOL_GPL(uv_cpu_to_blade);
  73
  74 short uv_possible_blades;
  75 EXPORT_SYMBOL_GPL(uv_possible_blades);
  76
  77 unsigned long sn_rtc_cycles_per_second;
  78 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
  79
  80 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
  81
  82 static const struct cpumask *uv_target_cpus(void)
  83 {
  84         return cpumask_of(0);
  85 }
  86
  87 static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
  88 {
  89         cpumask_clear(retmask);
  90         cpumask_set_cpu(cpu, retmask);
  91 }
  92
  93 int uv_wakeup_secondary(int phys_apicid, unsigned int start_rip)
  94 {
  95         unsigned long val;
  96         int pnode;
  97
  98         pnode = uv_apicid_to_pnode(phys_apicid);
  99         val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 100             (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
 101             (((long)start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
 102             APIC_DM_INIT;
 103         uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
 104         mdelay(10);
 105
 106         val = (1UL << UVH_IPI_INT_SEND_SHFT) |
 107             (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
 108             (((long)start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
 109             APIC_DM_STARTUP;
 110         uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
 111         return 0;
 112 }
 113
 114 static void uv_send_IPI_one(int cpu, int vector)
 115 {
 116         unsigned long val, apicid, lapicid;
 117         int pnode;
 118
 119         apicid = per_cpu(x86_cpu_to_apicid, cpu);
 120         lapicid = apicid & 0x3f;                /* ZZZ macro needed */
 121         pnode = uv_apicid_to_pnode(apicid);
 122         val =
 123             (1UL << UVH_IPI_INT_SEND_SHFT) | (lapicid <<
 124                                               UVH_IPI_INT_APIC_ID_SHFT) |
 125             (vector << UVH_IPI_INT_VECTOR_SHFT);
 126         uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
 127 }
 128
 129 static void uv_send_IPI_mask(const struct cpumask *mask, int vector)
 130 {
 131         unsigned int cpu;
 132
 133         for_each_cpu(cpu, mask)
 134                 uv_send_IPI_one(cpu, vector);
 135 }
 136
 137 static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
 138 {
 139         unsigned int cpu;
 140         unsigned int this_cpu = smp_processor_id();
 141
 142         for_each_cpu(cpu, mask)
 143                 if (cpu != this_cpu)
 144                         uv_send_IPI_one(cpu, vector);
 145 }
 146
 147 static void uv_send_IPI_allbutself(int vector)
 148 {
 149         unsigned int cpu;
 150         unsigned int this_cpu = smp_processor_id();
 151
 152         for_each_online_cpu(cpu)
 153                 if (cpu != this_cpu)
 154                         uv_send_IPI_one(cpu, vector);
 155 }
 156
 157 static void uv_send_IPI_all(int vector)
 158 {
 159         uv_send_IPI_mask(cpu_online_mask, vector);
 160 }
 161
 162 static int uv_apic_id_registered(void)
 163 {
 164         return 1;
 165 }
 166
 167 static void uv_init_apic_ldr(void)
 168 {
 169 }
 170
 171 static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
 172 {
 173         int cpu;
 174
 175         /*
 176          * We're using fixed IRQ delivery, can only return one phys APIC ID.
 177          * May as well be the first.
 178          */
 179         cpu = cpumask_first(cpumask);
 180         if ((unsigned)cpu < nr_cpu_ids)
 181                 return per_cpu(x86_cpu_to_apicid, cpu);
 182         else
 183                 return BAD_APICID;
 184 }
 185
 186 static unsigned int uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
 187                                               const struct cpumask *andmask)
 188 {
 189         int cpu;
 190
 191         /*
 192          * We're using fixed IRQ delivery, can only return one phys APIC ID.
 193          * May as well be the first.
 194          */
 195         for_each_cpu_and(cpu, cpumask, andmask)
 196                 if (cpumask_test_cpu(cpu, cpu_online_mask))
 197                         break;
 198         if (cpu < nr_cpu_ids)
 199                 return per_cpu(x86_cpu_to_apicid, cpu);
 200         return BAD_APICID;
 201 }
 202
 203 static unsigned int get_apic_id(unsigned long x)
 204 {
 205         unsigned int id;
 206
 207         WARN_ON(preemptible() && num_online_cpus() > 1);
 208         id = x | __get_cpu_var(x2apic_extra_bits);
 209
 210         return id;
 211 }
 212
 213 static unsigned long set_apic_id(unsigned int id)
 214 {
 215         unsigned long x;
 216
 217         /* maskout x2apic_extra_bits ? */
 218         x = id;
 219         return x;
 220 }
 221
 222 static unsigned int uv_read_apic_id(void)
 223 {
 224
 225         return get_apic_id(apic_read(APIC_ID));
 226 }
 227
 228 static unsigned int phys_pkg_id(int index_msb)
 229 {
 230         return uv_read_apic_id() >> index_msb;
 231 }
 232
 233 static void uv_send_IPI_self(int vector)
 234 {
 235         apic_write(APIC_SELF_IPI, vector);
 236 }
 237
 238 struct genapic apic_x2apic_uv_x = {
 239         .name = "UV large system",
 240         .acpi_madt_oem_check = uv_acpi_madt_oem_check,
 241         .int_delivery_mode = dest_Fixed,
 242         .int_dest_mode = (APIC_DEST_PHYSICAL != 0),
 243         .target_cpus = uv_target_cpus,
 244         .vector_allocation_domain = uv_vector_allocation_domain,
 245         .apic_id_registered = uv_apic_id_registered,
 246         .init_apic_ldr = uv_init_apic_ldr,
 247         .send_IPI_all = uv_send_IPI_all,
 248         .send_IPI_allbutself = uv_send_IPI_allbutself,
 249         .send_IPI_mask = uv_send_IPI_mask,
 250         .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself,
 251         .send_IPI_self = uv_send_IPI_self,
 252         .cpu_mask_to_apicid = uv_cpu_mask_to_apicid,
 253         .cpu_mask_to_apicid_and = uv_cpu_mask_to_apicid_and,
 254         .phys_pkg_id = phys_pkg_id,
 255         .get_apic_id = get_apic_id,
 256         .set_apic_id = set_apic_id,
 257         .apic_id_mask = (0xFFFFFFFFu),
 258 };
 259
 260 static __cpuinit void set_x2apic_extra_bits(int pnode)
 261 {
 262         __get_cpu_var(x2apic_extra_bits) = (pnode << 6);
 263 }
 264
 265 /*
 266  * Called on boot cpu.
 267  */
 268 static __init int boot_pnode_to_blade(int pnode)
 269 {
 270         int blade;
 271
 272         for (blade = 0; blade < uv_num_possible_blades(); blade++)
 273                 if (pnode == uv_blade_info[blade].pnode)
 274                         return blade;
 275         BUG();
 276 }
 277
 278 struct redir_addr {
 279         unsigned long redirect;
 280         unsigned long alias;
 281 };
 282
 283 #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
 284
 285 static __initdata struct redir_addr redir_addrs[] = {
 286         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
 287         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
 288         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
 289 };
 290
 291 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
 292 {
 293         union uvh_si_alias0_overlay_config_u alias;
 294         union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
 295         int i;
 296
 297         for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
 298                 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
 299                 if (alias.s.base == 0) {
 300                         *size = (1UL << alias.s.m_alias);
 301                         redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
 302                         *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
 303                         return;
 304                 }
 305         }
 306         BUG();
 307 }
 308
 309 static __init void map_low_mmrs(void)
 310 {
 311         init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE);
 312         init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE);
 313 }
 314
 315 enum map_type {map_wb, map_uc};
 316
 317 static __init void map_high(char *id, unsigned long base, int shift,
 318                             int max_pnode, enum map_type map_type)
 319 {
 320         unsigned long bytes, paddr;
 321
 322         paddr = base << shift;
 323         bytes = (1UL << shift) * (max_pnode + 1);
 324         printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
 325                                                 paddr + bytes);
 326         if (map_type == map_uc)
 327                 init_extra_mapping_uc(paddr, bytes);
 328         else
 329                 init_extra_mapping_wb(paddr, bytes);
 330
 331 }
 332 static __init void map_gru_high(int max_pnode)
 333 {
 334         union uvh_rh_gam_gru_overlay_config_mmr_u gru;
 335         int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT;
 336
 337         gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
 338         if (gru.s.enable)
 339                 map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
 340 }
 341
 342 static __init void map_config_high(int max_pnode)
 343 {
 344         union uvh_rh_gam_cfg_overlay_config_mmr_u cfg;
 345         int shift = UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT;
 346
 347         cfg.v = uv_read_local_mmr(UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR);
 348         if (cfg.s.enable)
 349                 map_high("CONFIG", cfg.s.base, shift, max_pnode, map_uc);
 350 }
 351
 352 static __init void map_mmr_high(int max_pnode)
 353 {
 354         union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
 355         int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;
 356
 357         mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
 358         if (mmr.s.enable)
 359                 map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
 360 }
 361
 362 static __init void map_mmioh_high(int max_pnode)
 363 {
 364         union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
 365         int shift = UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT;
 366
 367         mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
 368         if (mmioh.s.enable)
 369                 map_high("MMIOH", mmioh.s.base, shift, max_pnode, map_uc);
 370 }
 371
 372 static __init void uv_rtc_init(void)
 373 {
 374         long status;
 375         u64 ticks_per_sec;
 376
 377         status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK,
 378                                         &ticks_per_sec);
 379         if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) {
 380                 printk(KERN_WARNING
 381                         "unable to determine platform RTC clock frequency, "
 382                         "guessing.\n");
 383                 /* BIOS gives wrong value for clock freq. so guess */
 384                 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
 385         } else
 386                 sn_rtc_cycles_per_second = ticks_per_sec;
 387 }
 388
 389 /*
 390  * percpu heartbeat timer
 391  */
 392 static void uv_heartbeat(unsigned long ignored)
 393 {
 394         struct timer_list *timer = &uv_hub_info->scir.timer;
 395         unsigned char bits = uv_hub_info->scir.state;
 396
 397         /* flip heartbeat bit */
 398         bits ^= SCIR_CPU_HEARTBEAT;
 399
 400         /* is this cpu idle? */
 401         if (idle_cpu(raw_smp_processor_id()))
 402                 bits &= ~SCIR_CPU_ACTIVITY;
 403         else
 404                 bits |= SCIR_CPU_ACTIVITY;
 405
 406         /* update system controller interface reg */
 407         uv_set_scir_bits(bits);
 408
 409         /* enable next timer period */
 410         mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
 411 }
 412
 413 static void __cpuinit uv_heartbeat_enable(int cpu)
 414 {
 415         if (!uv_cpu_hub_info(cpu)->scir.enabled) {
 416                 struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer;
 417
 418                 uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
 419                 setup_timer(timer, uv_heartbeat, cpu);
 420                 timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
 421                 add_timer_on(timer, cpu);
 422                 uv_cpu_hub_info(cpu)->scir.enabled = 1;
 423         }
 424
 425         /* check boot cpu */
 426         if (!uv_cpu_hub_info(0)->scir.enabled)
 427                 uv_heartbeat_enable(0);
 428 }
 429
 430 #ifdef CONFIG_HOTPLUG_CPU
 431 static void __cpuinit uv_heartbeat_disable(int cpu)
 432 {
 433         if (uv_cpu_hub_info(cpu)->scir.enabled) {
 434                 uv_cpu_hub_info(cpu)->scir.enabled = 0;
 435                 del_timer(&uv_cpu_hub_info(cpu)->scir.timer);
 436         }
 437         uv_set_cpu_scir_bits(cpu, 0xff);
 438 }
 439
 440 /*
 441  * cpu hotplug notifier
 442  */
 443 static __cpuinit int uv_scir_cpu_notify(struct notifier_block *self,
 444                                        unsigned long action, void *hcpu)
 445 {
 446         long cpu = (long)hcpu;
 447
 448         switch (action) {
 449         case CPU_ONLINE:
 450                 uv_heartbeat_enable(cpu);
 451                 break;
 452         case CPU_DOWN_PREPARE:
 453                 uv_heartbeat_disable(cpu);
 454                 break;
 455         default:
 456                 break;
 457         }
 458         return NOTIFY_OK;
 459 }
 460
 461 static __init void uv_scir_register_cpu_notifier(void)
 462 {
 463         hotcpu_notifier(uv_scir_cpu_notify, 0);
 464 }
 465
 466 #else /* !CONFIG_HOTPLUG_CPU */
 467
 468 static __init void uv_scir_register_cpu_notifier(void)
 469 {
 470 }
 471
 472 static __init int uv_init_heartbeat(void)
 473 {
 474         int cpu;
 475
 476         if (is_uv_system())
 477                 for_each_online_cpu(cpu)
 478                         uv_heartbeat_enable(cpu);
 479         return 0;
 480 }
 481
 482 late_initcall(uv_init_heartbeat);
 483
 484 #endif /* !CONFIG_HOTPLUG_CPU */
 485
 486 /*
 487  * Called on each cpu to initialize the per_cpu UV data area.
 488  *      ZZZ hotplug not supported yet
 489  */
 490 void __cpuinit uv_cpu_init(void)
 491 {
 492         /* CPU 0 initilization will be done via uv_system_init. */
 493         if (!uv_blade_info)
 494                 return;
 495
 496         uv_blade_info[uv_numa_blade_id()].nr_online_cpus++;
 497
 498         if (get_uv_system_type() == UV_NON_UNIQUE_APIC)
 499                 set_x2apic_extra_bits(uv_hub_info->pnode);
 500 }
 501
 502
 503 void __init uv_system_init(void)
 504 {
 505         union uvh_si_addr_map_config_u m_n_config;
 506         union uvh_node_id_u node_id;
 507         unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
 508         int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
 509         int max_pnode = 0;
 510         unsigned long mmr_base, present;
 511
 512         map_low_mmrs();
 513
 514         m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
 515         m_val = m_n_config.s.m_skt;
 516         n_val = m_n_config.s.n_skt;
 517         mmr_base =
 518             uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
 519             ~UV_MMR_ENABLE;
 520         printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
 521
 522         for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
 523                 uv_possible_blades +=
 524                   hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE + i * 8));
 525         printk(KERN_DEBUG "UV: Found %d blades\n", uv_num_possible_blades());
 526
 527         bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
 528         uv_blade_info = kmalloc(bytes, GFP_KERNEL);
 529
 530         get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
 531
 532         bytes = sizeof(uv_node_to_blade[0]) * num_possible_nodes();
 533         uv_node_to_blade = kmalloc(bytes, GFP_KERNEL);
 534         memset(uv_node_to_blade, 255, bytes);
 535
 536         bytes = sizeof(uv_cpu_to_blade[0]) * num_possible_cpus();
 537         uv_cpu_to_blade = kmalloc(bytes, GFP_KERNEL);
 538         memset(uv_cpu_to_blade, 255, bytes);
 539
 540         blade = 0;
 541         for (i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++) {
 542                 present = uv_read_local_mmr(UVH_NODE_PRESENT_TABLE + i * 8);
 543                 for (j = 0; j < 64; j++) {
 544                         if (!test_bit(j, &present))
 545                                 continue;
 546                         uv_blade_info[blade].pnode = (i * 64 + j);
 547                         uv_blade_info[blade].nr_possible_cpus = 0;
 548                         uv_blade_info[blade].nr_online_cpus = 0;
 549                         blade++;
 550                 }
 551         }
 552
 553         node_id.v = uv_read_local_mmr(UVH_NODE_ID);
 554         gnode_upper = (((unsigned long)node_id.s.node_id) &
 555                        ~((1 << n_val) - 1)) << m_val;
 556
 557         uv_bios_init();
 558         uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
 559                             &sn_coherency_id, &sn_region_size);
 560         uv_rtc_init();
 561
 562         for_each_present_cpu(cpu) {
 563                 nid = cpu_to_node(cpu);
 564                 pnode = uv_apicid_to_pnode(per_cpu(x86_cpu_to_apicid, cpu));
 565                 blade = boot_pnode_to_blade(pnode);
 566                 lcpu = uv_blade_info[blade].nr_possible_cpus;
 567                 uv_blade_info[blade].nr_possible_cpus++;
 568
 569                 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
 570                 uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
 571                 uv_cpu_hub_info(cpu)->m_val = m_val;
 572                 uv_cpu_hub_info(cpu)->n_val = m_val;
 573                 uv_cpu_hub_info(cpu)->numa_blade_id = blade;
 574                 uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
 575                 uv_cpu_hub_info(cpu)->pnode = pnode;
 576                 uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) - 1;
 577                 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
 578                 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
 579                 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
 580                 uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
 581                 uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;
 582                 uv_node_to_blade[nid] = blade;
 583                 uv_cpu_to_blade[cpu] = blade;
 584                 max_pnode = max(pnode, max_pnode);
 585
 586                 printk(KERN_DEBUG "UV: cpu %d, apicid 0x%x, pnode %d, nid %d, "
 587                         "lcpu %d, blade %d\n",
 588                         cpu, per_cpu(x86_cpu_to_apicid, cpu), pnode, nid,
 589                         lcpu, blade);
 590         }
 591
 592         map_gru_high(max_pnode);
 593         map_mmr_high(max_pnode);
 594         map_config_high(max_pnode);
 595         map_mmioh_high(max_pnode);
 596
 597         uv_cpu_init();
 598         uv_scir_register_cpu_notifier();
 599         proc_mkdir("sgi_uv", NULL);
 600 }