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
6 * SGI UV APIC functions (note: not an Intel compatible APIC)
8 * Copyright (C) 2007-2010 Silicon Graphics, Inc. All rights reserved.
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/slab.h>
21 #include <linux/cpu.h>
22 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/kdebug.h>
27 #include <asm/uv/uv_mmrs.h>
28 #include <asm/uv/uv_hub.h>
29 #include <asm/current.h>
30 #include <asm/pgtable.h>
31 #include <asm/uv/bios.h>
32 #include <asm/uv/uv.h>
36 #include <asm/x86_init.h>
38 DEFINE_PER_CPU(int, x2apic_extra_bits
);
40 #define PR_DEVEL(fmt, args...) pr_devel("%s: " fmt, __func__, args)
42 static enum uv_system_type uv_system_type
;
43 static u64 gru_start_paddr
, gru_end_paddr
;
44 static union uvh_apicid uvh_apicid
;
45 int uv_min_hub_revision_id
;
46 EXPORT_SYMBOL_GPL(uv_min_hub_revision_id
);
47 unsigned int uv_apicid_hibits
;
48 EXPORT_SYMBOL_GPL(uv_apicid_hibits
);
49 static DEFINE_SPINLOCK(uv_nmi_lock
);
51 static unsigned long __init
uv_early_read_mmr(unsigned long addr
)
53 unsigned long val
, *mmr
;
55 mmr
= early_ioremap(UV_LOCAL_MMR_BASE
| addr
, sizeof(*mmr
));
57 early_iounmap(mmr
, sizeof(*mmr
));
61 static inline bool is_GRU_range(u64 start
, u64 end
)
63 return start
>= gru_start_paddr
&& end
<= gru_end_paddr
;
66 static bool uv_is_untracked_pat_range(u64 start
, u64 end
)
68 return is_ISA_range(start
, end
) || is_GRU_range(start
, end
);
71 static int __init
early_get_pnodeid(void)
73 union uvh_node_id_u node_id
;
74 union uvh_rh_gam_config_mmr_u m_n_config
;
77 /* Currently, all blades have same revision number */
78 node_id
.v
= uv_early_read_mmr(UVH_NODE_ID
);
79 m_n_config
.v
= uv_early_read_mmr(UVH_RH_GAM_CONFIG_MMR
);
80 uv_min_hub_revision_id
= node_id
.s
.revision
;
82 pnode
= (node_id
.s
.node_id
>> 1) & ((1 << m_n_config
.s
.n_skt
) - 1);
86 static void __init
early_get_apic_pnode_shift(void)
88 uvh_apicid
.v
= uv_early_read_mmr(UVH_APICID
);
91 * Old bios, use default value
93 uvh_apicid
.s
.pnode_shift
= UV_APIC_PNODE_SHIFT
;
97 * Add an extra bit as dictated by bios to the destination apicid of
98 * interrupts potentially passing through the UV HUB. This prevents
99 * a deadlock between interrupts and IO port operations.
101 static void __init
uv_set_apicid_hibit(void)
103 union uvh_lb_target_physical_apic_id_mask_u apicid_mask
;
105 apicid_mask
.v
= uv_early_read_mmr(UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK
);
106 uv_apicid_hibits
= apicid_mask
.s
.bit_enables
& UV_APICID_HIBIT_MASK
;
109 static int __init
uv_acpi_madt_oem_check(char *oem_id
, char *oem_table_id
)
113 if (!strcmp(oem_id
, "SGI")) {
114 pnodeid
= early_get_pnodeid();
115 early_get_apic_pnode_shift();
116 x86_platform
.is_untracked_pat_range
= uv_is_untracked_pat_range
;
117 x86_platform
.nmi_init
= uv_nmi_init
;
118 if (!strcmp(oem_table_id
, "UVL"))
119 uv_system_type
= UV_LEGACY_APIC
;
120 else if (!strcmp(oem_table_id
, "UVX"))
121 uv_system_type
= UV_X2APIC
;
122 else if (!strcmp(oem_table_id
, "UVH")) {
123 __this_cpu_write(x2apic_extra_bits
,
124 pnodeid
<< uvh_apicid
.s
.pnode_shift
);
125 uv_system_type
= UV_NON_UNIQUE_APIC
;
126 uv_set_apicid_hibit();
133 enum uv_system_type
get_uv_system_type(void)
135 return uv_system_type
;
138 int is_uv_system(void)
140 return uv_system_type
!= UV_NONE
;
142 EXPORT_SYMBOL_GPL(is_uv_system
);
144 DEFINE_PER_CPU(struct uv_hub_info_s
, __uv_hub_info
);
145 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info
);
147 struct uv_blade_info
*uv_blade_info
;
148 EXPORT_SYMBOL_GPL(uv_blade_info
);
150 short *uv_node_to_blade
;
151 EXPORT_SYMBOL_GPL(uv_node_to_blade
);
153 short *uv_cpu_to_blade
;
154 EXPORT_SYMBOL_GPL(uv_cpu_to_blade
);
156 short uv_possible_blades
;
157 EXPORT_SYMBOL_GPL(uv_possible_blades
);
159 unsigned long sn_rtc_cycles_per_second
;
160 EXPORT_SYMBOL(sn_rtc_cycles_per_second
);
162 static const struct cpumask
*uv_target_cpus(void)
164 return cpu_online_mask
;
167 static void uv_vector_allocation_domain(int cpu
, struct cpumask
*retmask
)
169 cpumask_clear(retmask
);
170 cpumask_set_cpu(cpu
, retmask
);
173 static int __cpuinit
uv_wakeup_secondary(int phys_apicid
, unsigned long start_rip
)
179 pnode
= uv_apicid_to_pnode(phys_apicid
);
180 phys_apicid
|= uv_apicid_hibits
;
181 val
= (1UL << UVH_IPI_INT_SEND_SHFT
) |
182 (phys_apicid
<< UVH_IPI_INT_APIC_ID_SHFT
) |
183 ((start_rip
<< UVH_IPI_INT_VECTOR_SHFT
) >> 12) |
185 uv_write_global_mmr64(pnode
, UVH_IPI_INT
, val
);
188 val
= (1UL << UVH_IPI_INT_SEND_SHFT
) |
189 (phys_apicid
<< UVH_IPI_INT_APIC_ID_SHFT
) |
190 ((start_rip
<< UVH_IPI_INT_VECTOR_SHFT
) >> 12) |
192 uv_write_global_mmr64(pnode
, UVH_IPI_INT
, val
);
194 atomic_set(&init_deasserted
, 1);
199 static void uv_send_IPI_one(int cpu
, int vector
)
201 unsigned long apicid
;
204 apicid
= per_cpu(x86_cpu_to_apicid
, cpu
);
205 pnode
= uv_apicid_to_pnode(apicid
);
206 uv_hub_send_ipi(pnode
, apicid
, vector
);
209 static void uv_send_IPI_mask(const struct cpumask
*mask
, int vector
)
213 for_each_cpu(cpu
, mask
)
214 uv_send_IPI_one(cpu
, vector
);
217 static void uv_send_IPI_mask_allbutself(const struct cpumask
*mask
, int vector
)
219 unsigned int this_cpu
= smp_processor_id();
222 for_each_cpu(cpu
, mask
) {
224 uv_send_IPI_one(cpu
, vector
);
228 static void uv_send_IPI_allbutself(int vector
)
230 unsigned int this_cpu
= smp_processor_id();
233 for_each_online_cpu(cpu
) {
235 uv_send_IPI_one(cpu
, vector
);
239 static void uv_send_IPI_all(int vector
)
241 uv_send_IPI_mask(cpu_online_mask
, vector
);
244 static int uv_apic_id_registered(void)
249 static void uv_init_apic_ldr(void)
253 static unsigned int uv_cpu_mask_to_apicid(const struct cpumask
*cpumask
)
256 * We're using fixed IRQ delivery, can only return one phys APIC ID.
257 * May as well be the first.
259 int cpu
= cpumask_first(cpumask
);
261 if ((unsigned)cpu
< nr_cpu_ids
)
262 return per_cpu(x86_cpu_to_apicid
, cpu
) | uv_apicid_hibits
;
268 uv_cpu_mask_to_apicid_and(const struct cpumask
*cpumask
,
269 const struct cpumask
*andmask
)
274 * We're using fixed IRQ delivery, can only return one phys APIC ID.
275 * May as well be the first.
277 for_each_cpu_and(cpu
, cpumask
, andmask
) {
278 if (cpumask_test_cpu(cpu
, cpu_online_mask
))
281 return per_cpu(x86_cpu_to_apicid
, cpu
) | uv_apicid_hibits
;
284 static unsigned int x2apic_get_apic_id(unsigned long x
)
288 WARN_ON(preemptible() && num_online_cpus() > 1);
289 id
= x
| __this_cpu_read(x2apic_extra_bits
);
294 static unsigned long set_apic_id(unsigned int id
)
298 /* maskout x2apic_extra_bits ? */
303 static unsigned int uv_read_apic_id(void)
306 return x2apic_get_apic_id(apic_read(APIC_ID
));
309 static int uv_phys_pkg_id(int initial_apicid
, int index_msb
)
311 return uv_read_apic_id() >> index_msb
;
314 static void uv_send_IPI_self(int vector
)
316 apic_write(APIC_SELF_IPI
, vector
);
319 struct apic __refdata apic_x2apic_uv_x
= {
321 .name
= "UV large system",
323 .acpi_madt_oem_check
= uv_acpi_madt_oem_check
,
324 .apic_id_registered
= uv_apic_id_registered
,
326 .irq_delivery_mode
= dest_Fixed
,
327 .irq_dest_mode
= 0, /* physical */
329 .target_cpus
= uv_target_cpus
,
331 .dest_logical
= APIC_DEST_LOGICAL
,
332 .check_apicid_used
= NULL
,
333 .check_apicid_present
= NULL
,
335 .vector_allocation_domain
= uv_vector_allocation_domain
,
336 .init_apic_ldr
= uv_init_apic_ldr
,
338 .ioapic_phys_id_map
= NULL
,
339 .setup_apic_routing
= NULL
,
340 .multi_timer_check
= NULL
,
341 .cpu_present_to_apicid
= default_cpu_present_to_apicid
,
342 .apicid_to_cpu_present
= NULL
,
343 .setup_portio_remap
= NULL
,
344 .check_phys_apicid_present
= default_check_phys_apicid_present
,
345 .enable_apic_mode
= NULL
,
346 .phys_pkg_id
= uv_phys_pkg_id
,
347 .mps_oem_check
= NULL
,
349 .get_apic_id
= x2apic_get_apic_id
,
350 .set_apic_id
= set_apic_id
,
351 .apic_id_mask
= 0xFFFFFFFFu
,
353 .cpu_mask_to_apicid
= uv_cpu_mask_to_apicid
,
354 .cpu_mask_to_apicid_and
= uv_cpu_mask_to_apicid_and
,
356 .send_IPI_mask
= uv_send_IPI_mask
,
357 .send_IPI_mask_allbutself
= uv_send_IPI_mask_allbutself
,
358 .send_IPI_allbutself
= uv_send_IPI_allbutself
,
359 .send_IPI_all
= uv_send_IPI_all
,
360 .send_IPI_self
= uv_send_IPI_self
,
362 .wakeup_secondary_cpu
= uv_wakeup_secondary
,
363 .trampoline_phys_low
= DEFAULT_TRAMPOLINE_PHYS_LOW
,
364 .trampoline_phys_high
= DEFAULT_TRAMPOLINE_PHYS_HIGH
,
365 .wait_for_init_deassert
= NULL
,
366 .smp_callin_clear_local_apic
= NULL
,
367 .inquire_remote_apic
= NULL
,
369 .read
= native_apic_msr_read
,
370 .write
= native_apic_msr_write
,
371 .icr_read
= native_x2apic_icr_read
,
372 .icr_write
= native_x2apic_icr_write
,
373 .wait_icr_idle
= native_x2apic_wait_icr_idle
,
374 .safe_wait_icr_idle
= native_safe_x2apic_wait_icr_idle
,
377 static __cpuinit
void set_x2apic_extra_bits(int pnode
)
379 __this_cpu_write(x2apic_extra_bits
, pnode
<< uvh_apicid
.s
.pnode_shift
);
383 * Called on boot cpu.
385 static __init
int boot_pnode_to_blade(int pnode
)
389 for (blade
= 0; blade
< uv_num_possible_blades(); blade
++)
390 if (pnode
== uv_blade_info
[blade
].pnode
)
396 unsigned long redirect
;
400 #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
402 static __initdata
struct redir_addr redir_addrs
[] = {
403 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR
, UVH_RH_GAM_ALIAS210_OVERLAY_CONFIG_0_MMR
},
404 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR
, UVH_RH_GAM_ALIAS210_OVERLAY_CONFIG_1_MMR
},
405 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR
, UVH_RH_GAM_ALIAS210_OVERLAY_CONFIG_2_MMR
},
408 static __init
void get_lowmem_redirect(unsigned long *base
, unsigned long *size
)
410 union uvh_rh_gam_alias210_overlay_config_2_mmr_u alias
;
411 union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect
;
414 for (i
= 0; i
< ARRAY_SIZE(redir_addrs
); i
++) {
415 alias
.v
= uv_read_local_mmr(redir_addrs
[i
].alias
);
416 if (alias
.s
.enable
&& alias
.s
.base
== 0) {
417 *size
= (1UL << alias
.s
.m_alias
);
418 redirect
.v
= uv_read_local_mmr(redir_addrs
[i
].redirect
);
419 *base
= (unsigned long)redirect
.s
.dest_base
<< DEST_SHIFT
;
426 enum map_type
{map_wb
, map_uc
};
428 static __init
void map_high(char *id
, unsigned long base
, int pshift
,
429 int bshift
, int max_pnode
, enum map_type map_type
)
431 unsigned long bytes
, paddr
;
433 paddr
= base
<< pshift
;
434 bytes
= (1UL << bshift
) * (max_pnode
+ 1);
435 printk(KERN_INFO
"UV: Map %s_HI 0x%lx - 0x%lx\n", id
, paddr
,
437 if (map_type
== map_uc
)
438 init_extra_mapping_uc(paddr
, bytes
);
440 init_extra_mapping_wb(paddr
, bytes
);
443 static __init
void map_gru_high(int max_pnode
)
445 union uvh_rh_gam_gru_overlay_config_mmr_u gru
;
446 int shift
= UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT
;
448 gru
.v
= uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR
);
450 map_high("GRU", gru
.s
.base
, shift
, shift
, max_pnode
, map_wb
);
451 gru_start_paddr
= ((u64
)gru
.s
.base
<< shift
);
452 gru_end_paddr
= gru_start_paddr
+ (1UL << shift
) * (max_pnode
+ 1);
457 static __init
void map_mmr_high(int max_pnode
)
459 union uvh_rh_gam_mmr_overlay_config_mmr_u mmr
;
460 int shift
= UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT
;
462 mmr
.v
= uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR
);
464 map_high("MMR", mmr
.s
.base
, shift
, shift
, max_pnode
, map_uc
);
467 static __init
void map_mmioh_high(int max_pnode
)
469 union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh
;
470 int shift
= UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT
;
472 mmioh
.v
= uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR
);
474 map_high("MMIOH", mmioh
.s
.base
, shift
, mmioh
.s
.m_io
,
478 static __init
void map_low_mmrs(void)
480 init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE
, UV_GLOBAL_MMR32_SIZE
);
481 init_extra_mapping_uc(UV_LOCAL_MMR_BASE
, UV_LOCAL_MMR_SIZE
);
484 static __init
void uv_rtc_init(void)
489 status
= uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK
,
491 if (status
!= BIOS_STATUS_SUCCESS
|| ticks_per_sec
< 100000) {
493 "unable to determine platform RTC clock frequency, "
495 /* BIOS gives wrong value for clock freq. so guess */
496 sn_rtc_cycles_per_second
= 1000000000000UL / 30000UL;
498 sn_rtc_cycles_per_second
= ticks_per_sec
;
502 * percpu heartbeat timer
504 static void uv_heartbeat(unsigned long ignored
)
506 struct timer_list
*timer
= &uv_hub_info
->scir
.timer
;
507 unsigned char bits
= uv_hub_info
->scir
.state
;
509 /* flip heartbeat bit */
510 bits
^= SCIR_CPU_HEARTBEAT
;
512 /* is this cpu idle? */
513 if (idle_cpu(raw_smp_processor_id()))
514 bits
&= ~SCIR_CPU_ACTIVITY
;
516 bits
|= SCIR_CPU_ACTIVITY
;
518 /* update system controller interface reg */
519 uv_set_scir_bits(bits
);
521 /* enable next timer period */
522 mod_timer_pinned(timer
, jiffies
+ SCIR_CPU_HB_INTERVAL
);
525 static void __cpuinit
uv_heartbeat_enable(int cpu
)
527 while (!uv_cpu_hub_info(cpu
)->scir
.enabled
) {
528 struct timer_list
*timer
= &uv_cpu_hub_info(cpu
)->scir
.timer
;
530 uv_set_cpu_scir_bits(cpu
, SCIR_CPU_HEARTBEAT
|SCIR_CPU_ACTIVITY
);
531 setup_timer(timer
, uv_heartbeat
, cpu
);
532 timer
->expires
= jiffies
+ SCIR_CPU_HB_INTERVAL
;
533 add_timer_on(timer
, cpu
);
534 uv_cpu_hub_info(cpu
)->scir
.enabled
= 1;
536 /* also ensure that boot cpu is enabled */
541 #ifdef CONFIG_HOTPLUG_CPU
542 static void __cpuinit
uv_heartbeat_disable(int cpu
)
544 if (uv_cpu_hub_info(cpu
)->scir
.enabled
) {
545 uv_cpu_hub_info(cpu
)->scir
.enabled
= 0;
546 del_timer(&uv_cpu_hub_info(cpu
)->scir
.timer
);
548 uv_set_cpu_scir_bits(cpu
, 0xff);
552 * cpu hotplug notifier
554 static __cpuinit
int uv_scir_cpu_notify(struct notifier_block
*self
,
555 unsigned long action
, void *hcpu
)
557 long cpu
= (long)hcpu
;
561 uv_heartbeat_enable(cpu
);
563 case CPU_DOWN_PREPARE
:
564 uv_heartbeat_disable(cpu
);
572 static __init
void uv_scir_register_cpu_notifier(void)
574 hotcpu_notifier(uv_scir_cpu_notify
, 0);
577 #else /* !CONFIG_HOTPLUG_CPU */
579 static __init
void uv_scir_register_cpu_notifier(void)
583 static __init
int uv_init_heartbeat(void)
588 for_each_online_cpu(cpu
)
589 uv_heartbeat_enable(cpu
);
593 late_initcall(uv_init_heartbeat
);
595 #endif /* !CONFIG_HOTPLUG_CPU */
597 /* Direct Legacy VGA I/O traffic to designated IOH */
598 int uv_set_vga_state(struct pci_dev
*pdev
, bool decode
,
599 unsigned int command_bits
, bool change_bridge
)
603 PR_DEVEL("devfn %x decode %d cmd %x chg_brdg %d\n",
604 pdev
->devfn
, decode
, command_bits
, change_bridge
);
609 if ((command_bits
& PCI_COMMAND_IO
) == 0)
612 domain
= pci_domain_nr(pdev
->bus
);
613 bus
= pdev
->bus
->number
;
615 rc
= uv_bios_set_legacy_vga_target(decode
, domain
, bus
);
616 PR_DEVEL("vga decode %d %x:%x, rc: %d\n", decode
, domain
, bus
, rc
);
622 * Called on each cpu to initialize the per_cpu UV data area.
623 * FIXME: hotplug not supported yet
625 void __cpuinit
uv_cpu_init(void)
627 /* CPU 0 initilization will be done via uv_system_init. */
631 uv_blade_info
[uv_numa_blade_id()].nr_online_cpus
++;
633 if (get_uv_system_type() == UV_NON_UNIQUE_APIC
)
634 set_x2apic_extra_bits(uv_hub_info
->pnode
);
638 * When NMI is received, print a stack trace.
640 int uv_handle_nmi(struct notifier_block
*self
, unsigned long reason
, void *data
)
642 if (reason
!= DIE_NMIUNKNOWN
)
646 /* do nothing if entering the crash kernel */
649 * Use a lock so only one cpu prints at a time
650 * to prevent intermixed output.
652 spin_lock(&uv_nmi_lock
);
653 pr_info("NMI stack dump cpu %u:\n", smp_processor_id());
655 spin_unlock(&uv_nmi_lock
);
660 static struct notifier_block uv_dump_stack_nmi_nb
= {
661 .notifier_call
= uv_handle_nmi
664 void uv_register_nmi_notifier(void)
666 if (register_die_notifier(&uv_dump_stack_nmi_nb
))
667 printk(KERN_WARNING
"UV NMI handler failed to register\n");
670 void uv_nmi_init(void)
675 * Unmask NMI on all cpus
677 value
= apic_read(APIC_LVT1
) | APIC_DM_NMI
;
678 value
&= ~APIC_LVT_MASKED
;
679 apic_write(APIC_LVT1
, value
);
682 void __init
uv_system_init(void)
684 union uvh_rh_gam_config_mmr_u m_n_config
;
685 union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh
;
686 union uvh_node_id_u node_id
;
687 unsigned long gnode_upper
, lowmem_redir_base
, lowmem_redir_size
;
688 int bytes
, nid
, cpu
, lcpu
, pnode
, blade
, i
, j
, m_val
, n_val
, n_io
;
689 int gnode_extra
, max_pnode
= 0;
690 unsigned long mmr_base
, present
, paddr
;
691 unsigned short pnode_mask
, pnode_io_mask
;
695 m_n_config
.v
= uv_read_local_mmr(UVH_RH_GAM_CONFIG_MMR
);
696 m_val
= m_n_config
.s
.m_skt
;
697 n_val
= m_n_config
.s
.n_skt
;
698 mmioh
.v
= uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR
);
701 uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR
) &
703 pnode_mask
= (1 << n_val
) - 1;
704 pnode_io_mask
= (1 << n_io
) - 1;
706 node_id
.v
= uv_read_local_mmr(UVH_NODE_ID
);
707 gnode_extra
= (node_id
.s
.node_id
& ~((1 << n_val
) - 1)) >> 1;
708 gnode_upper
= ((unsigned long)gnode_extra
<< m_val
);
709 printk(KERN_INFO
"UV: N %d, M %d, N_IO: %d, gnode_upper 0x%lx, gnode_extra 0x%x, pnode_mask 0x%x, pnode_io_mask 0x%x\n",
710 n_val
, m_val
, n_io
, gnode_upper
, gnode_extra
, pnode_mask
, pnode_io_mask
);
712 printk(KERN_DEBUG
"UV: global MMR base 0x%lx\n", mmr_base
);
714 for(i
= 0; i
< UVH_NODE_PRESENT_TABLE_DEPTH
; i
++)
715 uv_possible_blades
+=
716 hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE
+ i
* 8));
717 printk(KERN_DEBUG
"UV: Found %d blades\n", uv_num_possible_blades());
719 bytes
= sizeof(struct uv_blade_info
) * uv_num_possible_blades();
720 uv_blade_info
= kmalloc(bytes
, GFP_KERNEL
);
721 BUG_ON(!uv_blade_info
);
722 for (blade
= 0; blade
< uv_num_possible_blades(); blade
++)
723 uv_blade_info
[blade
].memory_nid
= -1;
725 get_lowmem_redirect(&lowmem_redir_base
, &lowmem_redir_size
);
727 bytes
= sizeof(uv_node_to_blade
[0]) * num_possible_nodes();
728 uv_node_to_blade
= kmalloc(bytes
, GFP_KERNEL
);
729 BUG_ON(!uv_node_to_blade
);
730 memset(uv_node_to_blade
, 255, bytes
);
732 bytes
= sizeof(uv_cpu_to_blade
[0]) * num_possible_cpus();
733 uv_cpu_to_blade
= kmalloc(bytes
, GFP_KERNEL
);
734 BUG_ON(!uv_cpu_to_blade
);
735 memset(uv_cpu_to_blade
, 255, bytes
);
738 for (i
= 0; i
< UVH_NODE_PRESENT_TABLE_DEPTH
; i
++) {
739 present
= uv_read_local_mmr(UVH_NODE_PRESENT_TABLE
+ i
* 8);
740 for (j
= 0; j
< 64; j
++) {
741 if (!test_bit(j
, &present
))
743 pnode
= (i
* 64 + j
) & pnode_mask
;
744 uv_blade_info
[blade
].pnode
= pnode
;
745 uv_blade_info
[blade
].nr_possible_cpus
= 0;
746 uv_blade_info
[blade
].nr_online_cpus
= 0;
747 max_pnode
= max(pnode
, max_pnode
);
753 uv_bios_get_sn_info(0, &uv_type
, &sn_partition_id
, &sn_coherency_id
,
754 &sn_region_size
, &system_serial_number
);
757 for_each_present_cpu(cpu
) {
758 int apicid
= per_cpu(x86_cpu_to_apicid
, cpu
);
760 nid
= cpu_to_node(cpu
);
762 * apic_pnode_shift must be set before calling uv_apicid_to_pnode();
764 uv_cpu_hub_info(cpu
)->pnode_mask
= pnode_mask
;
765 uv_cpu_hub_info(cpu
)->apic_pnode_shift
= uvh_apicid
.s
.pnode_shift
;
766 pnode
= uv_apicid_to_pnode(apicid
);
767 blade
= boot_pnode_to_blade(pnode
);
768 lcpu
= uv_blade_info
[blade
].nr_possible_cpus
;
769 uv_blade_info
[blade
].nr_possible_cpus
++;
771 /* Any node on the blade, else will contain -1. */
772 uv_blade_info
[blade
].memory_nid
= nid
;
774 uv_cpu_hub_info(cpu
)->lowmem_remap_base
= lowmem_redir_base
;
775 uv_cpu_hub_info(cpu
)->lowmem_remap_top
= lowmem_redir_size
;
776 uv_cpu_hub_info(cpu
)->m_val
= m_val
;
777 uv_cpu_hub_info(cpu
)->n_val
= n_val
;
778 uv_cpu_hub_info(cpu
)->numa_blade_id
= blade
;
779 uv_cpu_hub_info(cpu
)->blade_processor_id
= lcpu
;
780 uv_cpu_hub_info(cpu
)->pnode
= pnode
;
781 uv_cpu_hub_info(cpu
)->gpa_mask
= (1UL << (m_val
+ n_val
)) - 1;
782 uv_cpu_hub_info(cpu
)->gnode_upper
= gnode_upper
;
783 uv_cpu_hub_info(cpu
)->gnode_extra
= gnode_extra
;
784 uv_cpu_hub_info(cpu
)->global_mmr_base
= mmr_base
;
785 uv_cpu_hub_info(cpu
)->coherency_domain_number
= sn_coherency_id
;
786 uv_cpu_hub_info(cpu
)->scir
.offset
= uv_scir_offset(apicid
);
787 uv_node_to_blade
[nid
] = blade
;
788 uv_cpu_to_blade
[cpu
] = blade
;
791 /* Add blade/pnode info for nodes without cpus */
792 for_each_online_node(nid
) {
793 if (uv_node_to_blade
[nid
] >= 0)
795 paddr
= node_start_pfn(nid
) << PAGE_SHIFT
;
796 paddr
= uv_soc_phys_ram_to_gpa(paddr
);
797 pnode
= (paddr
>> m_val
) & pnode_mask
;
798 blade
= boot_pnode_to_blade(pnode
);
799 uv_node_to_blade
[nid
] = blade
;
802 map_gru_high(max_pnode
);
803 map_mmr_high(max_pnode
);
804 map_mmioh_high(max_pnode
& pnode_io_mask
);
807 uv_scir_register_cpu_notifier();
808 uv_register_nmi_notifier();
809 proc_mkdir("sgi_uv", NULL
);
811 /* register Legacy VGA I/O redirection handler */
812 pci_register_set_vga_state(uv_set_vga_state
);