Merge branch 'rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
[linux-2.6] / arch / x86 / kernel / apic / x2apic_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 #include <linux/cpumask.h>
11 #include <linux/hardirq.h>
12 #include <linux/proc_fs.h>
13 #include <linux/threads.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/string.h>
17 #include <linux/ctype.h>
18 #include <linux/sched.h>
19 #include <linux/timer.h>
20 #include <linux/cpu.h>
21 #include <linux/init.h>
22
23 #include <asm/uv/uv_mmrs.h>
24 #include <asm/uv/uv_hub.h>
25 #include <asm/current.h>
26 #include <asm/pgtable.h>
27 #include <asm/uv/bios.h>
28 #include <asm/uv/uv.h>
29 #include <asm/apic.h>
30 #include <asm/ipi.h>
31 #include <asm/smp.h>
32
33 DEFINE_PER_CPU(int, x2apic_extra_bits);
34
35 static enum uv_system_type uv_system_type;
36
37 static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
38 {
39         if (!strcmp(oem_id, "SGI")) {
40                 if (!strcmp(oem_table_id, "UVL"))
41                         uv_system_type = UV_LEGACY_APIC;
42                 else if (!strcmp(oem_table_id, "UVX"))
43                         uv_system_type = UV_X2APIC;
44                 else if (!strcmp(oem_table_id, "UVH")) {
45                         uv_system_type = UV_NON_UNIQUE_APIC;
46                         return 1;
47                 }
48         }
49         return 0;
50 }
51
52 enum uv_system_type get_uv_system_type(void)
53 {
54         return uv_system_type;
55 }
56
57 int is_uv_system(void)
58 {
59         return uv_system_type != UV_NONE;
60 }
61 EXPORT_SYMBOL_GPL(is_uv_system);
62
63 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
64 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
65
66 struct uv_blade_info *uv_blade_info;
67 EXPORT_SYMBOL_GPL(uv_blade_info);
68
69 short *uv_node_to_blade;
70 EXPORT_SYMBOL_GPL(uv_node_to_blade);
71
72 short *uv_cpu_to_blade;
73 EXPORT_SYMBOL_GPL(uv_cpu_to_blade);
74
75 short uv_possible_blades;
76 EXPORT_SYMBOL_GPL(uv_possible_blades);
77
78 unsigned long sn_rtc_cycles_per_second;
79 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
80
81 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
82
83 static const struct cpumask *uv_target_cpus(void)
84 {
85         return cpumask_of(0);
86 }
87
88 static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
89 {
90         cpumask_clear(retmask);
91         cpumask_set_cpu(cpu, retmask);
92 }
93
94 static int uv_wakeup_secondary(int phys_apicid, unsigned long start_rip)
95 {
96 #ifdef CONFIG_SMP
97         unsigned long val;
98         int pnode;
99
100         pnode = uv_apicid_to_pnode(phys_apicid);
101         val = (1UL << UVH_IPI_INT_SEND_SHFT) |
102             (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
103             ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
104             APIC_DM_INIT;
105         uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
106         mdelay(10);
107
108         val = (1UL << UVH_IPI_INT_SEND_SHFT) |
109             (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
110             ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
111             APIC_DM_STARTUP;
112         uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
113
114         atomic_set(&init_deasserted, 1);
115 #endif
116         return 0;
117 }
118
119 static void uv_send_IPI_one(int cpu, int vector)
120 {
121         unsigned long apicid;
122         int pnode;
123
124         apicid = per_cpu(x86_cpu_to_apicid, cpu);
125         pnode = uv_apicid_to_pnode(apicid);
126         uv_hub_send_ipi(pnode, apicid, vector);
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 this_cpu = smp_processor_id();
140         unsigned int cpu;
141
142         for_each_cpu(cpu, mask) {
143                 if (cpu != this_cpu)
144                         uv_send_IPI_one(cpu, vector);
145         }
146 }
147
148 static void uv_send_IPI_allbutself(int vector)
149 {
150         unsigned int this_cpu = smp_processor_id();
151         unsigned int cpu;
152
153         for_each_online_cpu(cpu) {
154                 if (cpu != this_cpu)
155                         uv_send_IPI_one(cpu, vector);
156         }
157 }
158
159 static void uv_send_IPI_all(int vector)
160 {
161         uv_send_IPI_mask(cpu_online_mask, vector);
162 }
163
164 static int uv_apic_id_registered(void)
165 {
166         return 1;
167 }
168
169 static void uv_init_apic_ldr(void)
170 {
171 }
172
173 static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
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         int cpu = cpumask_first(cpumask);
180
181         if ((unsigned)cpu < nr_cpu_ids)
182                 return per_cpu(x86_cpu_to_apicid, cpu);
183         else
184                 return BAD_APICID;
185 }
186
187 static unsigned int
188 uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
189                           const struct cpumask *andmask)
190 {
191         int cpu;
192
193         /*
194          * We're using fixed IRQ delivery, can only return one phys APIC ID.
195          * May as well be the first.
196          */
197         for_each_cpu_and(cpu, cpumask, andmask) {
198                 if (cpumask_test_cpu(cpu, cpu_online_mask))
199                         break;
200         }
201         if (cpu < nr_cpu_ids)
202                 return per_cpu(x86_cpu_to_apicid, cpu);
203
204         return BAD_APICID;
205 }
206
207 static unsigned int x2apic_get_apic_id(unsigned long x)
208 {
209         unsigned int id;
210
211         WARN_ON(preemptible() && num_online_cpus() > 1);
212         id = x | __get_cpu_var(x2apic_extra_bits);
213
214         return id;
215 }
216
217 static unsigned long set_apic_id(unsigned int id)
218 {
219         unsigned long x;
220
221         /* maskout x2apic_extra_bits ? */
222         x = id;
223         return x;
224 }
225
226 static unsigned int uv_read_apic_id(void)
227 {
228
229         return x2apic_get_apic_id(apic_read(APIC_ID));
230 }
231
232 static int uv_phys_pkg_id(int initial_apicid, int index_msb)
233 {
234         return uv_read_apic_id() >> index_msb;
235 }
236
237 static void uv_send_IPI_self(int vector)
238 {
239         apic_write(APIC_SELF_IPI, vector);
240 }
241
242 struct apic apic_x2apic_uv_x = {
243
244         .name                           = "UV large system",
245         .probe                          = NULL,
246         .acpi_madt_oem_check            = uv_acpi_madt_oem_check,
247         .apic_id_registered             = uv_apic_id_registered,
248
249         .irq_delivery_mode              = dest_Fixed,
250         .irq_dest_mode                  = 1, /* logical */
251
252         .target_cpus                    = uv_target_cpus,
253         .disable_esr                    = 0,
254         .dest_logical                   = APIC_DEST_LOGICAL,
255         .check_apicid_used              = NULL,
256         .check_apicid_present           = NULL,
257
258         .vector_allocation_domain       = uv_vector_allocation_domain,
259         .init_apic_ldr                  = uv_init_apic_ldr,
260
261         .ioapic_phys_id_map             = NULL,
262         .setup_apic_routing             = NULL,
263         .multi_timer_check              = NULL,
264         .apicid_to_node                 = NULL,
265         .cpu_to_logical_apicid          = NULL,
266         .cpu_present_to_apicid          = default_cpu_present_to_apicid,
267         .apicid_to_cpu_present          = NULL,
268         .setup_portio_remap             = NULL,
269         .check_phys_apicid_present      = default_check_phys_apicid_present,
270         .enable_apic_mode               = NULL,
271         .phys_pkg_id                    = uv_phys_pkg_id,
272         .mps_oem_check                  = NULL,
273
274         .get_apic_id                    = x2apic_get_apic_id,
275         .set_apic_id                    = set_apic_id,
276         .apic_id_mask                   = 0xFFFFFFFFu,
277
278         .cpu_mask_to_apicid             = uv_cpu_mask_to_apicid,
279         .cpu_mask_to_apicid_and         = uv_cpu_mask_to_apicid_and,
280
281         .send_IPI_mask                  = uv_send_IPI_mask,
282         .send_IPI_mask_allbutself       = uv_send_IPI_mask_allbutself,
283         .send_IPI_allbutself            = uv_send_IPI_allbutself,
284         .send_IPI_all                   = uv_send_IPI_all,
285         .send_IPI_self                  = uv_send_IPI_self,
286
287         .wakeup_secondary_cpu           = uv_wakeup_secondary,
288         .trampoline_phys_low            = DEFAULT_TRAMPOLINE_PHYS_LOW,
289         .trampoline_phys_high           = DEFAULT_TRAMPOLINE_PHYS_HIGH,
290         .wait_for_init_deassert         = NULL,
291         .smp_callin_clear_local_apic    = NULL,
292         .inquire_remote_apic            = NULL,
293
294         .read                           = native_apic_msr_read,
295         .write                          = native_apic_msr_write,
296         .icr_read                       = native_x2apic_icr_read,
297         .icr_write                      = native_x2apic_icr_write,
298         .wait_icr_idle                  = native_x2apic_wait_icr_idle,
299         .safe_wait_icr_idle             = native_safe_x2apic_wait_icr_idle,
300 };
301
302 static __cpuinit void set_x2apic_extra_bits(int pnode)
303 {
304         __get_cpu_var(x2apic_extra_bits) = (pnode << 6);
305 }
306
307 /*
308  * Called on boot cpu.
309  */
310 static __init int boot_pnode_to_blade(int pnode)
311 {
312         int blade;
313
314         for (blade = 0; blade < uv_num_possible_blades(); blade++)
315                 if (pnode == uv_blade_info[blade].pnode)
316                         return blade;
317         BUG();
318 }
319
320 struct redir_addr {
321         unsigned long redirect;
322         unsigned long alias;
323 };
324
325 #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
326
327 static __initdata struct redir_addr redir_addrs[] = {
328         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
329         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
330         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
331 };
332
333 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
334 {
335         union uvh_si_alias0_overlay_config_u alias;
336         union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
337         int i;
338
339         for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
340                 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
341                 if (alias.s.base == 0) {
342                         *size = (1UL << alias.s.m_alias);
343                         redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
344                         *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
345                         return;
346                 }
347         }
348         BUG();
349 }
350
351 static __init void map_low_mmrs(void)
352 {
353         init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE);
354         init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE);
355 }
356
357 enum map_type {map_wb, map_uc};
358
359 static __init void map_high(char *id, unsigned long base, int shift,
360                             int max_pnode, enum map_type map_type)
361 {
362         unsigned long bytes, paddr;
363
364         paddr = base << shift;
365         bytes = (1UL << shift) * (max_pnode + 1);
366         printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
367                                                 paddr + bytes);
368         if (map_type == map_uc)
369                 init_extra_mapping_uc(paddr, bytes);
370         else
371                 init_extra_mapping_wb(paddr, bytes);
372
373 }
374 static __init void map_gru_high(int max_pnode)
375 {
376         union uvh_rh_gam_gru_overlay_config_mmr_u gru;
377         int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT;
378
379         gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
380         if (gru.s.enable)
381                 map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
382 }
383
384 static __init void map_config_high(int max_pnode)
385 {
386         union uvh_rh_gam_cfg_overlay_config_mmr_u cfg;
387         int shift = UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT;
388
389         cfg.v = uv_read_local_mmr(UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR);
390         if (cfg.s.enable)
391                 map_high("CONFIG", cfg.s.base, shift, max_pnode, map_uc);
392 }
393
394 static __init void map_mmr_high(int max_pnode)
395 {
396         union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
397         int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;
398
399         mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
400         if (mmr.s.enable)
401                 map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
402 }
403
404 static __init void map_mmioh_high(int max_pnode)
405 {
406         union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
407         int shift = UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT;
408
409         mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
410         if (mmioh.s.enable)
411                 map_high("MMIOH", mmioh.s.base, shift, max_pnode, map_uc);
412 }
413
414 static __init void uv_rtc_init(void)
415 {
416         long status;
417         u64 ticks_per_sec;
418
419         status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK,
420                                         &ticks_per_sec);
421         if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) {
422                 printk(KERN_WARNING
423                         "unable to determine platform RTC clock frequency, "
424                         "guessing.\n");
425                 /* BIOS gives wrong value for clock freq. so guess */
426                 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
427         } else
428                 sn_rtc_cycles_per_second = ticks_per_sec;
429 }
430
431 /*
432  * percpu heartbeat timer
433  */
434 static void uv_heartbeat(unsigned long ignored)
435 {
436         struct timer_list *timer = &uv_hub_info->scir.timer;
437         unsigned char bits = uv_hub_info->scir.state;
438
439         /* flip heartbeat bit */
440         bits ^= SCIR_CPU_HEARTBEAT;
441
442         /* is this cpu idle? */
443         if (idle_cpu(raw_smp_processor_id()))
444                 bits &= ~SCIR_CPU_ACTIVITY;
445         else
446                 bits |= SCIR_CPU_ACTIVITY;
447
448         /* update system controller interface reg */
449         uv_set_scir_bits(bits);
450
451         /* enable next timer period */
452         mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
453 }
454
455 static void __cpuinit uv_heartbeat_enable(int cpu)
456 {
457         if (!uv_cpu_hub_info(cpu)->scir.enabled) {
458                 struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer;
459
460                 uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
461                 setup_timer(timer, uv_heartbeat, cpu);
462                 timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
463                 add_timer_on(timer, cpu);
464                 uv_cpu_hub_info(cpu)->scir.enabled = 1;
465         }
466
467         /* check boot cpu */
468         if (!uv_cpu_hub_info(0)->scir.enabled)
469                 uv_heartbeat_enable(0);
470 }
471
472 #ifdef CONFIG_HOTPLUG_CPU
473 static void __cpuinit uv_heartbeat_disable(int cpu)
474 {
475         if (uv_cpu_hub_info(cpu)->scir.enabled) {
476                 uv_cpu_hub_info(cpu)->scir.enabled = 0;
477                 del_timer(&uv_cpu_hub_info(cpu)->scir.timer);
478         }
479         uv_set_cpu_scir_bits(cpu, 0xff);
480 }
481
482 /*
483  * cpu hotplug notifier
484  */
485 static __cpuinit int uv_scir_cpu_notify(struct notifier_block *self,
486                                        unsigned long action, void *hcpu)
487 {
488         long cpu = (long)hcpu;
489
490         switch (action) {
491         case CPU_ONLINE:
492                 uv_heartbeat_enable(cpu);
493                 break;
494         case CPU_DOWN_PREPARE:
495                 uv_heartbeat_disable(cpu);
496                 break;
497         default:
498                 break;
499         }
500         return NOTIFY_OK;
501 }
502
503 static __init void uv_scir_register_cpu_notifier(void)
504 {
505         hotcpu_notifier(uv_scir_cpu_notify, 0);
506 }
507
508 #else /* !CONFIG_HOTPLUG_CPU */
509
510 static __init void uv_scir_register_cpu_notifier(void)
511 {
512 }
513
514 static __init int uv_init_heartbeat(void)
515 {
516         int cpu;
517
518         if (is_uv_system())
519                 for_each_online_cpu(cpu)
520                         uv_heartbeat_enable(cpu);
521         return 0;
522 }
523
524 late_initcall(uv_init_heartbeat);
525
526 #endif /* !CONFIG_HOTPLUG_CPU */
527
528 /*
529  * Called on each cpu to initialize the per_cpu UV data area.
530  * FIXME: hotplug not supported yet
531  */
532 void __cpuinit uv_cpu_init(void)
533 {
534         /* CPU 0 initilization will be done via uv_system_init. */
535         if (!uv_blade_info)
536                 return;
537
538         uv_blade_info[uv_numa_blade_id()].nr_online_cpus++;
539
540         if (get_uv_system_type() == UV_NON_UNIQUE_APIC)
541                 set_x2apic_extra_bits(uv_hub_info->pnode);
542 }
543
544
545 void __init uv_system_init(void)
546 {
547         union uvh_si_addr_map_config_u m_n_config;
548         union uvh_node_id_u node_id;
549         unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
550         int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
551         int max_pnode = 0;
552         unsigned long mmr_base, present;
553
554         map_low_mmrs();
555
556         m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
557         m_val = m_n_config.s.m_skt;
558         n_val = m_n_config.s.n_skt;
559         mmr_base =
560             uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
561             ~UV_MMR_ENABLE;
562         printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
563
564         for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
565                 uv_possible_blades +=
566                   hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE + i * 8));
567         printk(KERN_DEBUG "UV: Found %d blades\n", uv_num_possible_blades());
568
569         bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
570         uv_blade_info = kmalloc(bytes, GFP_KERNEL);
571
572         get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
573
574         bytes = sizeof(uv_node_to_blade[0]) * num_possible_nodes();
575         uv_node_to_blade = kmalloc(bytes, GFP_KERNEL);
576         memset(uv_node_to_blade, 255, bytes);
577
578         bytes = sizeof(uv_cpu_to_blade[0]) * num_possible_cpus();
579         uv_cpu_to_blade = kmalloc(bytes, GFP_KERNEL);
580         memset(uv_cpu_to_blade, 255, bytes);
581
582         blade = 0;
583         for (i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++) {
584                 present = uv_read_local_mmr(UVH_NODE_PRESENT_TABLE + i * 8);
585                 for (j = 0; j < 64; j++) {
586                         if (!test_bit(j, &present))
587                                 continue;
588                         uv_blade_info[blade].pnode = (i * 64 + j);
589                         uv_blade_info[blade].nr_possible_cpus = 0;
590                         uv_blade_info[blade].nr_online_cpus = 0;
591                         blade++;
592                 }
593         }
594
595         node_id.v = uv_read_local_mmr(UVH_NODE_ID);
596         gnode_upper = (((unsigned long)node_id.s.node_id) &
597                        ~((1 << n_val) - 1)) << m_val;
598
599         uv_bios_init();
600         uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
601                             &sn_coherency_id, &sn_region_size);
602         uv_rtc_init();
603
604         for_each_present_cpu(cpu) {
605                 nid = cpu_to_node(cpu);
606                 pnode = uv_apicid_to_pnode(per_cpu(x86_cpu_to_apicid, cpu));
607                 blade = boot_pnode_to_blade(pnode);
608                 lcpu = uv_blade_info[blade].nr_possible_cpus;
609                 uv_blade_info[blade].nr_possible_cpus++;
610
611                 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
612                 uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
613                 uv_cpu_hub_info(cpu)->m_val = m_val;
614                 uv_cpu_hub_info(cpu)->n_val = m_val;
615                 uv_cpu_hub_info(cpu)->numa_blade_id = blade;
616                 uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
617                 uv_cpu_hub_info(cpu)->pnode = pnode;
618                 uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) - 1;
619                 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
620                 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
621                 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
622                 uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
623                 uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;
624                 uv_node_to_blade[nid] = blade;
625                 uv_cpu_to_blade[cpu] = blade;
626                 max_pnode = max(pnode, max_pnode);
627
628                 printk(KERN_DEBUG "UV: cpu %d, apicid 0x%x, pnode %d, nid %d, "
629                         "lcpu %d, blade %d\n",
630                         cpu, per_cpu(x86_cpu_to_apicid, cpu), pnode, nid,
631                         lcpu, blade);
632         }
633
634         map_gru_high(max_pnode);
635         map_mmr_high(max_pnode);
636         map_config_high(max_pnode);
637         map_mmioh_high(max_pnode);
638
639         uv_cpu_init();
640         uv_scir_register_cpu_notifier();
641         proc_mkdir("sgi_uv", NULL);
642 }